:root {
  color-scheme: dark;
  --ink: #e8f2f0;
  --muted: #7f969a;
  --cyan: #68ddf7;
  --panel: rgba(5, 17, 21, 0.82);
  --line: rgba(104, 221, 247, 0.18);
}

/* Start-page step 2: local welcome gateway. The live Three.js house remains the
   only scene asset behind this lightweight HTML/CSS layer. */
.design-entry {
  position: fixed;
  z-index: 86;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 34px;
  background: rgba(12, 18, 22, 0.72);
}

.design-entry[hidden] {
  display: none !important;
}

.design-entry-card {
  width: min(1240px, calc(100vw - 68px));
  height: min(850px, calc(100vh - 68px));
  min-height: 590px;
  display: grid;
  grid-template-rows: minmax(0, 1fr) 66px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.48);
  border-radius: 18px;
  color: #26323a;
  background: rgba(218, 224, 229, 0.9);
  box-shadow: 0 38px 110px rgba(0, 0, 0, 0.42);
}

.design-entry-hero {
  position: relative;
  min-height: 0;
  overflow: hidden;
  padding: 46px 58px;
  isolation: isolate;
}

.design-entry-hero::before,
.design-entry-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
}

.design-entry-hero::before {
  opacity: 0.72;
  background:
    linear-gradient(115deg, rgba(235, 240, 244, 0.9), rgba(207, 216, 223, 0.45) 48%, rgba(227, 232, 236, 0.76)),
    repeating-linear-gradient(0deg, transparent 0 47px, rgba(62, 95, 114, 0.08) 48px),
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(62, 95, 114, 0.08) 48px);
}

.design-entry-hero::after {
  inset: 42% 6% -26% 6%;
  border-radius: 50%;
  opacity: 0.45;
  background: radial-gradient(ellipse, rgba(70, 153, 207, 0.22), transparent 66%);
}

.design-entry-greeting {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 20px;
  width: max-content;
  color: #fff;
  text-shadow: 0 2px 16px rgba(34, 52, 64, 0.26);
}

.design-entry-avatar {
  width: 72px;
  height: 72px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 30px rgba(36, 64, 83, 0.15);
}

.design-entry-avatar img {
  width: 50px;
  height: 50px;
}

.design-entry-greeting > span:last-child {
  display: grid;
  gap: 5px;
}

.design-entry-greeting small {
  font: 650 10px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.15em;
}

.design-entry-greeting h2 {
  margin: 0;
  color: inherit;
  font: 340 clamp(30px, 3.2vw, 48px)/1.08 -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
  letter-spacing: -0.045em;
}

.design-entry-back {
  position: absolute;
  z-index: 3;
  top: 40px;
  right: 48px;
  min-height: 36px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  color: #fff;
  background: rgba(55, 72, 83, 0.22);
  cursor: pointer;
}

.design-entry-flow {
  position: absolute;
  z-index: 2;
  top: 43%;
  left: 50%;
  width: min(900px, calc(100% - 100px));
  transform: translate(-50%, -24%);
}

.design-entry-company {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 11px;
  background: rgba(250, 252, 253, 0.9);
  box-shadow: 0 14px 40px rgba(41, 59, 71, 0.12);
}

.design-entry-company > span {
  display: grid;
  gap: 2px;
}

.design-entry-company strong {
  color: #3a464e;
  font-size: 15px;
}

.design-entry-company small {
  color: #86929a;
  font-size: 9px;
}

.design-entry-company > i {
  padding: 4px 7px;
  border-radius: 999px;
  color: #2477aa;
  background: #e2f3ff;
  font-size: 8px;
  font-style: normal;
}

.design-entry-company > i.is-review {
  color: #a76b21;
  background: #fff0d7;
}

.design-entry-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.design-entry-actions button {
  min-width: 0;
  min-height: 205px;
  display: grid;
  grid-template-rows: 1fr auto;
  place-items: center;
  gap: 14px;
  padding: 27px 14px 21px;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 13px;
  color: #414d55;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(241, 245, 247, 0.9));
  box-shadow: 0 15px 36px rgba(43, 60, 71, 0.13);
  cursor: pointer;
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.design-entry-actions button:hover,
.design-entry-actions button:focus-visible {
  border-color: rgba(52, 161, 229, 0.56);
  box-shadow: 0 22px 46px rgba(43, 60, 71, 0.2);
  transform: translateY(-4px);
}

.design-entry-actions svg {
  width: 86px;
  height: 86px;
  overflow: visible;
  fill: rgba(107, 195, 243, 0.15);
  stroke: #43a8e7;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.design-entry-actions button > span {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.design-entry-actions strong,
.design-entry-actions small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.design-entry-actions strong {
  font-size: 16px;
}

.design-entry-actions small {
  color: #859199;
  font-size: 10px;
}

.design-entry-cover-link {
  position: absolute;
  z-index: 2;
  bottom: 20px;
  left: 50%;
  min-height: 38px;
  padding: 0 18px;
  transform: translateX(-50%);
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: rgba(53, 64, 72, 0.64);
  font-size: 11px;
  cursor: pointer;
}

.design-entry-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 28px;
  border-top: 1px solid rgba(72, 85, 94, 0.12);
  background: rgba(248, 249, 250, 0.96);
}

.design-entry-footer button {
  grid-column: 2;
  border: 0;
  color: #4c565d;
  background: transparent;
  font-weight: 650;
  cursor: pointer;
}

.design-entry-footer button span {
  width: 18px;
  height: 18px;
  display: inline-grid;
  place-items: center;
  margin-right: 6px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 11px;
}

.design-entry-footer small {
  justify-self: end;
  color: #8b949a;
  font-size: 9px;
}

.design-entry-saved {
  position: absolute;
  z-index: 12;
  inset: 116px 86px 54px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  border: 1px solid rgba(60, 71, 78, 0.12);
  border-radius: 18px;
  background: rgba(252, 253, 254, 0.98);
  box-shadow: 0 34px 90px rgba(31, 45, 54, 0.28);
}

.design-entry-saved[hidden] {
  display: none !important;
}

.design-entry-saved > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 22px;
  border-bottom: 1px solid #e5eaed;
}

.design-entry-saved > header span {
  display: grid;
  gap: 4px;
}

.design-entry-saved > header small {
  color: #3d9edb;
  font: 650 8px/1 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.14em;
}

.design-entry-saved > header strong {
  font-size: 18px;
}

.design-entry-saved > header button {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  color: #65727a;
  background: #eef2f4;
  cursor: pointer;
}

.design-entry-saved > .saved-project-list {
  overflow: auto;
  padding: 18px 22px;
}

.design-entry-saved > footer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 22px;
  border-top: 1px solid #e5eaed;
  background: #f7f9fa;
}

.design-entry-saved > footer button {
  min-height: 38px;
  padding: 0 15px;
  border: 0;
  border-radius: 9px;
  color: #fff;
  background: #2698de;
  cursor: pointer;
}

.design-entry-saved .project-import-status {
  margin: 0;
  color: #7a858c;
  font-size: 9px;
}

@media (max-width: 900px) {
  .design-entry-card {
    min-height: 660px;
  }

  .design-entry-hero {
    padding: 32px;
  }

  .design-entry-greeting h2 {
    font-size: 30px;
  }

  .design-entry-flow {
    top: 152px;
    width: calc(100% - 64px);
    transform: translateX(-50%);
  }

  .design-entry-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .design-entry-actions button {
    min-height: 145px;
    grid-template-columns: 74px minmax(0, 1fr);
    grid-template-rows: 1fr;
    padding: 18px;
    text-align: left;
  }

  .design-entry-actions svg {
    width: 70px;
    height: 70px;
  }

  .design-entry-cover-link {
    display: none;
  }
}

@media (max-width: 620px) {
  .design-entry {
    padding: 0;
  }

  .design-entry-card {
    width: 100%;
    height: 100%;
    min-height: 0;
    border: 0;
    border-radius: 0;
  }

  .design-entry-hero {
    padding: 22px 18px;
    overflow: auto;
  }

  .design-entry-avatar {
    width: 54px;
    height: 54px;
  }

  .design-entry-avatar img {
    width: 38px;
    height: 38px;
  }

  .design-entry-greeting small,
  .design-entry-company small,
  .design-entry-footer small {
    display: none;
  }

  .design-entry-greeting h2 {
    font-size: 24px;
  }

  .design-entry-back {
    top: 23px;
    right: 16px;
  }

  .design-entry-back span {
    display: none;
  }

  .design-entry-flow {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    margin-top: 30px;
    transform: none;
  }

  .design-entry-company {
    justify-content: flex-start;
    padding-inline: 12px;
  }

  .design-entry-company > i {
    display: none;
  }

  .design-entry-actions {
    gap: 10px;
  }

  .design-entry-actions button {
    min-height: 128px;
    grid-template-columns: 1fr;
    grid-template-rows: 58px auto;
    gap: 6px;
    padding: 12px 8px;
    text-align: center;
  }

  .design-entry-actions svg {
    width: 58px;
    height: 58px;
  }

  .design-entry-actions strong {
    font-size: 14px;
  }

  .design-entry-actions small {
    font-size: 8px;
  }

  .design-entry-footer {
    display: flex;
    justify-content: center;
  }

  .design-entry-saved {
    inset: 72px 12px 18px;
  }
}

/* 91COST start-design home ------------------------------------------------- */

#project-home.project-home {
  --home-bg: #f4f7fa;
  --home-surface: #ffffff;
  --home-surface-soft: #eef3f8;
  --home-ink: #10243c;
  --home-muted: #647488;
  --home-line: rgba(16, 36, 60, 0.12);
  --home-brand: #1769e0;
  --home-brand-deep: #0d4faf;
  --home-cool: #2d9dcc;
  --home-warm: #ef8b32;
  --home-shadow: 0 28px 80px rgba(31, 55, 78, 0.15);
  z-index: 80;
  inset: 0;
  display: block;
  padding: 0;
  overflow-x: hidden;
  overflow-y: auto;
  color: var(--home-ink);
  background: var(--home-bg);
  backdrop-filter: none;
  scroll-behavior: smooth;
}

body[data-ui-theme="dark"] #project-home.project-home {
  --home-bg: #08131f;
  --home-surface: #111f2d;
  --home-surface-soft: #0c1926;
  --home-ink: #eef6ff;
  --home-muted: #8ea0b3;
  --home-line: rgba(195, 218, 241, 0.14);
  --home-brand: #5f9cff;
  --home-brand-deep: #3b7ee7;
  --home-cool: #5ac3ef;
  --home-warm: #ffad5c;
  --home-shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
}

#project-home.project-home[hidden] {
  display: none !important;
}

.home-start-shell {
  position: relative;
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
  color: var(--home-ink);
  background:
    radial-gradient(circle at 82% 12%, color-mix(in srgb, var(--home-cool) 12%, transparent), transparent 28%),
    radial-gradient(circle at 8% 42%, color-mix(in srgb, var(--home-brand) 8%, transparent), transparent 27%),
    var(--home-bg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.home-start-shell::before {
  content: "";
  position: absolute;
  inset: 76px 0 auto;
  height: 520px;
  pointer-events: none;
  opacity: 0.38;
  background-image:
    linear-gradient(var(--home-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--home-line) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(90deg, transparent, #000 28%, #000 74%, transparent);
}

.home-start-nav {
  position: sticky;
  z-index: 5;
  top: 0;
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
  padding: 14px max(28px, calc((100vw - 1320px) / 2));
  border-bottom: 1px solid var(--home-line);
  background: color-mix(in srgb, var(--home-bg) 88%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
}

.home-start-brand {
  width: max-content;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--home-ink);
  text-decoration: none;
}

.home-start-brand img {
  border-radius: 13px;
  box-shadow: 0 9px 24px rgba(11, 24, 39, 0.16);
}

.home-start-brand span {
  display: grid;
  gap: 2px;
}

.home-start-brand strong {
  font-size: 18px;
  line-height: 1;
  letter-spacing: -0.03em;
}

.home-start-brand small {
  color: var(--home-muted);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.home-start-nav > nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.home-start-nav > nav a {
  position: relative;
  padding: 9px 0;
  color: var(--home-muted);
  font-size: 12px;
  font-weight: 650;
  text-decoration: none;
}

.home-start-nav > nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--home-brand);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.home-start-nav > nav a:hover {
  color: var(--home-ink);
}

.home-start-nav > nav a:hover::after {
  transform: scaleX(1);
}

.home-start-nav-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
}

.home-start-nav-actions > span {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--home-muted);
  font-size: 11px;
}

.home-start-nav-actions > span i,
.home-start-footer > span i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #36b879;
  box-shadow: 0 0 0 4px color-mix(in srgb, #36b879 14%, transparent);
}

.home-start-nav-actions button {
  min-width: 72px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 7px 11px;
  border: 1px solid var(--home-line);
  border-radius: 12px;
  color: var(--home-ink);
  background: color-mix(in srgb, var(--home-surface) 82%, transparent);
  cursor: pointer;
}

.home-start-nav-actions button i {
  color: var(--home-brand);
  font-size: 11px;
  font-style: normal;
}

.home-start-nav-actions button b {
  font-size: 10px;
  font-weight: 650;
}

.home-start-main {
  position: relative;
  z-index: 1;
  width: min(1320px, calc(100% - 56px));
  margin: 0 auto;
  padding: 68px 0 54px;
}

.home-start-hero {
  min-height: min(650px, calc(100vh - 144px));
  display: grid;
  grid-template-columns: minmax(430px, 0.86fr) minmax(530px, 1.14fr);
  align-items: center;
  gap: clamp(44px, 6vw, 92px);
  padding: 8px 0 58px;
}

.home-start-copy {
  max-width: 560px;
}

.home-start-eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--home-brand);
  font: 720 10px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.15em;
}

.home-start-eyebrow i {
  width: 28px;
  height: 1px;
  background: currentColor;
}

.home-start-copy h1 {
  max-width: 630px;
  margin: 19px 0 24px;
  color: var(--home-ink);
  font: 740 clamp(46px, 5vw, 72px)/1.08 -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", sans-serif;
  letter-spacing: -0.055em;
}

.home-start-copy h1 em {
  color: var(--home-brand);
  font-style: normal;
}

.home-start-copy > p {
  max-width: 510px;
  margin: 0;
  color: var(--home-muted);
  font-size: 16px;
  line-height: 1.85;
}

.home-start-cta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
}

.home-start-cta-row button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 0 22px;
  border-radius: 16px;
  font-weight: 720;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.home-start-cta-row button i {
  font-size: 18px;
  font-style: normal;
  transition: transform 180ms ease;
}

.home-start-primary {
  min-width: 174px;
  border: 1px solid var(--home-brand);
  color: #fff;
  background: linear-gradient(135deg, var(--home-brand), var(--home-brand-deep));
  box-shadow: 0 15px 34px color-mix(in srgb, var(--home-brand) 28%, transparent);
}

.home-start-secondary {
  border: 1px solid var(--home-line);
  color: var(--home-ink);
  background: color-mix(in srgb, var(--home-surface) 82%, transparent);
}

.home-start-cta-row button:hover {
  transform: translateY(-2px);
}

.home-start-primary:hover {
  box-shadow: 0 19px 38px color-mix(in srgb, var(--home-brand) 34%, transparent);
}

.home-start-cta-row button:hover i {
  transform: translateX(3px);
}

.home-start-proof {
  display: flex;
  gap: 24px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.home-start-proof li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.home-start-proof li > i {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--home-line);
  border-radius: 11px;
  color: var(--home-brand);
  background: color-mix(in srgb, var(--home-surface) 76%, transparent);
  font-size: 16px;
  font-style: normal;
}

.home-start-proof li > span {
  display: grid;
  gap: 3px;
}

.home-start-proof strong {
  font-size: 11px;
}

.home-start-proof small {
  color: var(--home-muted);
  font-size: 9px;
}

.home-design-preview {
  position: relative;
  min-width: 0;
  margin: 0;
  padding: 30px 0 36px;
}

.home-design-preview::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  right: -12%;
  bottom: 4%;
  left: 10%;
  border-radius: 50%;
  background: color-mix(in srgb, var(--home-brand) 10%, transparent);
  filter: blur(30px);
}

.home-preview-window {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--home-line) 88%, transparent);
  border-radius: 26px;
  background: var(--home-surface);
  box-shadow: var(--home-shadow);
  transform: perspective(1100px) rotateY(-3deg) rotateX(1deg);
  transform-origin: center;
}

.home-preview-window > header {
  height: 50px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 17px;
  border-bottom: 1px solid var(--home-line);
  color: var(--home-muted);
  background: color-mix(in srgb, var(--home-surface-soft) 74%, var(--home-surface));
}

.home-preview-window > header > span {
  display: flex;
  gap: 5px;
}

.home-preview-window > header > span i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--home-muted) 36%, transparent);
}

.home-preview-window > header strong {
  font-size: 10px;
  letter-spacing: 0.06em;
}

.home-preview-window > header b {
  justify-self: end;
  min-width: 34px;
  padding: 5px 7px;
  border-radius: 8px;
  color: var(--home-brand);
  background: color-mix(in srgb, var(--home-brand) 10%, transparent);
  font-size: 9px;
  text-align: center;
}

.home-preview-window > svg {
  display: block;
  width: 100%;
  height: auto;
  color: color-mix(in srgb, var(--home-brand) 32%, transparent);
  background: color-mix(in srgb, var(--home-surface-soft) 58%, var(--home-surface));
}

.home-preview-grid {
  color: color-mix(in srgb, var(--home-brand) 30%, transparent);
}

.home-plan-floor {
  fill: var(--home-surface);
  stroke: color-mix(in srgb, var(--home-ink) 72%, transparent);
  stroke-width: 8;
  stroke-linejoin: round;
}

.home-plan > path:not(.home-plan-floor):not(.home-plan-door):not(.home-flow) {
  fill: none;
  stroke: color-mix(in srgb, var(--home-ink) 62%, transparent);
  stroke-width: 6;
  stroke-linecap: square;
}

.home-plan-door {
  fill: none;
  stroke: color-mix(in srgb, var(--home-muted) 48%, transparent);
  stroke-width: 2;
}

.home-plan-labels text {
  fill: var(--home-muted);
  font: 600 15px/1 -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
  letter-spacing: 0.04em;
}

.home-ac-units rect {
  fill: color-mix(in srgb, var(--home-cool) 14%, var(--home-surface));
  stroke: var(--home-cool);
  stroke-width: 2;
}

.home-flow {
  fill: none;
  stroke-width: 7;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 10 9;
  animation: home-flow-pulse 3.4s linear infinite;
}

.home-flow-cool {
  stroke: var(--home-cool);
}

.home-flow-warm {
  stroke: var(--home-warm);
  animation-direction: reverse;
}

.home-flow-nodes circle {
  stroke: var(--home-surface);
  stroke-width: 3;
}

.home-flow-nodes circle:nth-child(odd) {
  fill: var(--home-cool);
}

.home-flow-nodes circle:nth-child(even) {
  fill: var(--home-warm);
}

.home-preview-status {
  position: absolute;
  right: 15px;
  bottom: 14px;
  left: 15px;
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 8px 12px;
  border: 1px solid var(--home-line);
  border-radius: 12px;
  color: var(--home-muted);
  background: color-mix(in srgb, var(--home-surface) 88%, transparent);
  box-shadow: 0 8px 24px rgba(15, 37, 59, 0.1);
  backdrop-filter: blur(12px);
  font-size: 9px;
}

.home-preview-status span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.home-preview-status span i {
  width: 13px;
  height: 3px;
  border-radius: 4px;
}

.home-preview-status .is-warm {
  background: var(--home-warm);
}

.home-preview-status .is-cool {
  background: var(--home-cool);
}

.home-preview-status b {
  margin-left: auto;
  padding: 4px 7px;
  border-radius: 7px;
  color: #a56622;
  background: color-mix(in srgb, var(--home-warm) 14%, transparent);
  font-size: 8px;
}

body[data-ui-theme="dark"] .home-preview-status b {
  color: #ffc989;
}

.home-design-preview figcaption {
  position: absolute;
  right: 24px;
  bottom: 4px;
  left: 34px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.home-design-preview figcaption > span {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 11px 8px 8px;
  border: 1px solid var(--home-line);
  border-radius: 12px;
  color: var(--home-ink);
  background: var(--home-surface);
  box-shadow: 0 10px 28px rgba(15, 37, 59, 0.09);
}

.home-design-preview figcaption > span i {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: #fff;
  background: var(--home-warm);
  font-size: 8px;
  font-style: normal;
}

.home-design-preview figcaption > span:nth-child(2) i {
  background: var(--home-cool);
}

.home-design-preview figcaption > span strong {
  font-size: 9px;
}

.home-design-preview figcaption > b {
  margin-left: auto;
  color: var(--home-muted);
  font-size: 9px;
  font-weight: 600;
}

.home-quick-panel {
  scroll-margin-top: 92px;
  padding: 32px;
  border: 1px solid var(--home-line);
  border-radius: 28px;
  background: color-mix(in srgb, var(--home-surface) 90%, transparent);
  box-shadow: 0 20px 58px rgba(24, 44, 64, 0.08);
}

.home-quick-panel > header {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 0.7fr);
  align-items: end;
  gap: 30px;
  padding: 2px 3px 23px;
}

.home-quick-panel > header > div {
  display: grid;
  gap: 8px;
}

.home-quick-panel > header span,
.saved-projects-home > header span {
  color: var(--home-brand);
  font: 700 9px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.14em;
}

.home-quick-panel h2 {
  margin: 0;
  color: var(--home-ink);
  font-size: 26px;
  letter-spacing: -0.035em;
}

.home-quick-panel > header p {
  margin: 0;
  color: var(--home-muted);
  font-size: 12px;
  line-height: 1.7;
}

.home-entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.home-entry-grid > button {
  min-width: 0;
  min-height: 116px;
  display: grid;
  grid-template-columns: 43px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 17px;
  border: 1px solid var(--home-line);
  border-radius: 18px;
  color: var(--home-ink);
  background: var(--home-surface-soft);
  text-align: left;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.home-entry-grid > button:hover {
  border-color: color-mix(in srgb, var(--home-brand) 38%, var(--home-line));
  background: var(--home-surface);
  box-shadow: 0 13px 30px rgba(23, 54, 84, 0.09);
  transform: translateY(-2px);
}

.home-entry-grid > button > i {
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background: var(--home-warm);
  font: 760 11px/1 -apple-system, BlinkMacSystemFont, sans-serif;
  font-style: normal;
}

.home-entry-grid > button:nth-child(2) > i {
  background: var(--home-cool);
}

.home-entry-grid > button:nth-child(3) > i {
  color: var(--home-brand);
  background: color-mix(in srgb, var(--home-brand) 12%, var(--home-surface));
  font-size: 19px;
}

.home-entry-grid > button > span {
  min-width: 0;
  display: grid;
  gap: 6px;
}

.home-entry-grid > button strong {
  font-size: 13px;
}

.home-entry-grid > button small {
  color: var(--home-muted);
  font-size: 9px;
  line-height: 1.55;
}

.home-entry-grid > button > b {
  grid-column: 2;
  color: var(--home-brand);
  font-size: 9px;
  font-weight: 700;
}

.home-quick-panel > .project-import-status {
  margin: 12px 0 0;
  padding: 9px 12px;
  border: 0;
  border-left: 3px solid var(--home-brand);
  border-radius: 8px;
  color: var(--home-muted);
  background: var(--home-surface-soft);
  font-size: 9px;
}

.home-quick-panel .saved-projects-home {
  margin: 28px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--home-line);
  border-radius: 0;
  background: transparent;
}

.home-quick-panel .saved-projects-home > header {
  margin-bottom: 12px;
}

.home-quick-panel .saved-projects-home > header strong {
  color: var(--home-ink);
  font-size: 12px;
}

.home-quick-panel .saved-project-list {
  gap: 8px;
  margin-top: 0;
}

.home-quick-panel .saved-project-list > p {
  padding: 16px;
  border: 1px dashed var(--home-line);
  border-radius: 12px;
  color: var(--home-muted);
  background: var(--home-surface-soft);
  font-size: 10px;
}

.home-quick-panel .saved-project-list article {
  min-height: 64px;
  padding: 10px 12px 10px 16px;
  border: 1px solid var(--home-line);
  border-radius: 14px;
  background: var(--home-surface-soft);
}

.home-quick-panel .saved-project-list article strong {
  color: var(--home-ink);
  font-size: 11px;
}

.home-quick-panel .saved-project-list article small {
  color: var(--home-muted);
  font-size: 8px;
}

.home-quick-panel .saved-project-list article button {
  min-height: 34px;
  border: 1px solid var(--home-line);
  border-radius: 9px;
  color: var(--home-ink);
  background: var(--home-surface);
  font-size: 8px;
}

.home-quick-panel .saved-project-list article button:hover {
  border-color: color-mix(in srgb, var(--home-brand) 40%, var(--home-line));
  color: var(--home-brand);
}

.home-start-footer {
  position: relative;
  z-index: 1;
  width: min(1320px, calc(100% - 56px));
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 0 auto;
  padding: 22px 0 28px;
  border-top: 1px solid var(--home-line);
  color: var(--home-muted);
}

.home-start-footer > span {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--home-ink);
  font-size: 10px;
  font-weight: 700;
}

.home-start-footer p {
  max-width: 820px;
  margin: 0 0 0 auto;
  font-size: 9px;
  line-height: 1.65;
  text-align: right;
}

.home-start-shell button:focus-visible,
.home-start-shell a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--home-brand) 52%, transparent);
  outline-offset: 3px;
}

@keyframes home-flow-pulse {
  to { stroke-dashoffset: -38; }
}

@media (max-width: 1080px) {
  .home-start-main {
    padding-top: 42px;
  }

  .home-start-hero {
    grid-template-columns: minmax(350px, 0.9fr) minmax(450px, 1.1fr);
    gap: 35px;
  }

  .home-start-copy h1 {
    font-size: clamp(44px, 5.5vw, 60px);
  }

  .home-start-proof {
    gap: 14px;
  }

  .home-design-preview figcaption > span strong {
    display: none;
  }
}

@media (max-width: 860px) {
  .home-start-nav {
    grid-template-columns: 1fr auto;
  }

  .home-start-nav > nav {
    display: none;
  }

  .home-start-main {
    width: min(720px, calc(100% - 40px));
    padding-top: 52px;
  }

  .home-start-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 24px;
    padding-bottom: 66px;
  }

  .home-start-copy {
    max-width: 650px;
  }

  .home-start-copy > p {
    max-width: 610px;
  }

  .home-design-preview {
    width: min(690px, 100%);
    justify-self: center;
  }

  .home-preview-window {
    transform: none;
  }

  .home-quick-panel > header {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .home-entry-grid {
    grid-template-columns: 1fr;
  }

  .home-entry-grid > button {
    min-height: 92px;
  }

  .home-start-footer {
    width: min(720px, calc(100% - 40px));
  }
}

@media (max-width: 560px) {
  .home-start-nav {
    min-height: 66px;
    padding: 11px 16px;
  }

  .home-start-brand img {
    width: 38px;
    height: 38px;
  }

  .home-start-brand small,
  .home-start-nav-actions > span,
  .home-start-nav-actions button b {
    display: none;
  }

  .home-start-nav-actions button {
    min-width: 40px;
    width: 40px;
    height: 40px;
    padding: 0;
  }

  .home-start-main {
    width: calc(100% - 28px);
    padding: 36px 0 40px;
  }

  .home-start-copy h1 {
    margin-block: 15px 18px;
    font-size: clamp(39px, 12vw, 52px);
    line-height: 1.1;
  }

  .home-start-copy > p {
    font-size: 14px;
    line-height: 1.75;
  }

  .home-start-cta-row {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 27px;
  }

  .home-start-cta-row button {
    width: 100%;
    min-height: 54px;
  }

  .home-start-proof {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .home-start-proof li {
    align-items: flex-start;
  }

  .home-start-proof small {
    line-height: 1.45;
  }

  .home-design-preview {
    padding-top: 8px;
  }

  .home-preview-window {
    border-radius: 20px;
  }

  .home-preview-window > header {
    height: 43px;
  }

  .home-preview-status span:nth-child(2),
  .home-preview-status b,
  .home-design-preview figcaption > b {
    display: none;
  }

  .home-design-preview figcaption {
    right: 12px;
    left: 12px;
  }

  .home-quick-panel {
    padding: 22px 16px;
    border-radius: 22px;
  }

  .home-quick-panel h2 {
    font-size: 23px;
  }

  .home-entry-grid > button {
    min-height: 104px;
  }

  .home-quick-panel .saved-project-list article {
    grid-template-columns: 1fr;
  }

  .home-quick-panel .saved-project-actions {
    justify-content: flex-start;
  }

  .home-start-footer {
    width: calc(100% - 28px);
    display: grid;
    gap: 9px;
  }

  .home-start-footer p {
    margin: 0;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  #project-home.project-home {
    scroll-behavior: auto;
  }

  .home-flow,
  .home-start-shell *,
  .home-start-shell *::before,
  .home-start-shell *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #071216;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

button,
a {
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.demo-shell {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 560px;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 62% 38%, rgba(43, 112, 124, 0.22), transparent 34%),
    linear-gradient(145deg, #0a1a1e, #030b0e 78%);
}

.demo-shell::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: 0.13;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(104, 221, 247, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(104, 221, 247, 0.15) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 75%, transparent);
}

#three-bedroom-canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

#three-bedroom-canvas:active {
  cursor: grabbing;
}

.demo-topbar {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  min-height: 72px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 13px 22px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(to bottom, rgba(3, 12, 15, 0.93), rgba(3, 12, 15, 0.56));
  backdrop-filter: blur(14px);
}

.demo-brand {
  width: max-content;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}

.demo-brand img {
  filter: drop-shadow(0 0 12px rgba(104, 221, 247, 0.24));
}

.demo-brand span {
  display: grid;
  gap: 2px;
}

.demo-brand strong {
  font-size: 15px;
  letter-spacing: 0.12em;
}

.demo-brand small,
.demo-status,
.demo-full-link {
  color: var(--muted);
  font-size: 9px;
}

.demo-status {
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.08em;
}

.demo-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #67e5a5;
  box-shadow: 0 0 12px rgba(103, 229, 165, 0.82);
}

.demo-status b {
  color: #b4c8c7;
  font: 500 8px/1.2 "SFMono-Regular", Consolas, monospace;
}

.demo-full-link {
  justify-self: end;
  padding: 9px 12px;
  border: 1px solid var(--line);
  color: #b5cdcf;
  text-decoration: none;
  background: rgba(7, 25, 30, 0.62);
}

.demo-intro {
  position: absolute;
  z-index: 6;
  top: 112px;
  left: 28px;
  width: min(300px, calc(100vw - 56px));
  padding: 20px 21px;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(5, 20, 25, 0.9), rgba(4, 14, 18, 0.66));
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(13px);
  pointer-events: none;
}

.demo-intro > span,
.demo-legend > span,
.control-group > span {
  color: var(--cyan);
  font: 600 8px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.14em;
}

.demo-intro h1 {
  margin: 10px 0 11px;
  color: var(--ink);
  font: 500 31px/1.16 "Songti SC", "STSong", serif;
  letter-spacing: 0.02em;
}

.demo-intro p {
  margin: 0;
  color: #8fa5a7;
  font-size: 10px;
  line-height: 1.75;
}

.demo-intro dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 17px 0 0;
  background: var(--line);
}

.demo-intro dl div {
  display: grid;
  gap: 5px;
  padding: 10px 7px;
  background: rgba(4, 15, 19, 0.96);
}

.demo-intro dt {
  color: #617a7f;
  font-size: 7px;
}

.demo-intro dd {
  margin: 0;
  color: #c9dcda;
  font-size: 10px;
  font-weight: 600;
}

.demo-legend {
  position: absolute;
  z-index: 6;
  top: 102px;
  right: 24px;
  display: grid;
  gap: 10px;
  min-width: 138px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(12px);
  pointer-events: none;
}

.demo-legend b {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #9db2b3;
  font-size: 9px;
  font-weight: 500;
}

.demo-legend b i {
  width: 20px;
  height: 3px;
  border-radius: 4px;
}

.demo-legend .is-hot {
  background: #ff604d;
  box-shadow: 0 0 9px rgba(255, 96, 77, 0.7);
}

.demo-legend .is-cold {
  background: #40a8ff;
  box-shadow: 0 0 9px rgba(64, 168, 255, 0.72);
}

.demo-legend .is-room {
  height: 1px;
  background: var(--cyan);
}

.rotation-float {
  position: absolute;
  z-index: 22;
  left: 24px;
  bottom: 111px;
  min-width: 156px;
  min-height: 54px;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 8px 14px 8px 10px;
  border: 1px solid rgba(255, 176, 83, 0.7);
  color: #ffe5bd;
  background: rgba(49, 29, 12, 0.92);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.44), 0 0 24px rgba(255, 153, 61, 0.12);
  backdrop-filter: blur(14px);
  cursor: pointer;
}

.rotation-float:hover,
.rotation-float:focus-visible {
  border-color: #ffc36e;
  background: rgba(88, 48, 15, 0.96);
  transform: translateY(-1px);
}

.rotation-float[aria-pressed="false"] {
  border-color: rgba(104, 221, 247, 0.58);
  color: #dffaff;
  background: rgba(10, 48, 57, 0.94);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.44), 0 0 24px rgba(104, 221, 247, 0.12);
}

.rotation-float > i {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #071318;
  background: #ffbd62;
  font: 800 13px/1 "SFMono-Regular", Consolas, monospace;
  font-style: normal;
}

.rotation-float[aria-pressed="false"] > i {
  padding-left: 2px;
  background: var(--cyan);
}

.rotation-float > span {
  display: grid;
  gap: 3px;
  text-align: left;
}

.rotation-float strong {
  font-size: 11px;
}

.rotation-float small {
  color: #a98b64;
  font-size: 8px;
}

.rotation-float[aria-pressed="false"] small {
  color: #70a8b1;
}

.demo-controls {
  position: absolute;
  z-index: 10;
  left: 50%;
  bottom: 27px;
  width: min(880px, calc(100vw - 40px));
  display: grid;
  grid-template-columns: 1fr 1.25fr auto;
  gap: 1px;
  transform: translateX(-50%);
  border: 1px solid var(--line);
  background: rgba(104, 221, 247, 0.12);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(15px);
}

.control-group {
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 12px;
  background: rgba(4, 15, 19, 0.91);
}

.control-group > span {
  margin-right: 5px;
}

.control-group button {
  min-height: 33px;
  padding: 7px 11px;
  border: 1px solid rgba(104, 221, 247, 0.13);
  color: #80989c;
  background: rgba(7, 25, 30, 0.78);
  font-size: 9px;
  cursor: pointer;
}

.control-group button:hover,
.control-group button.is-active {
  border-color: rgba(104, 221, 247, 0.56);
  color: #e3fbff;
  background: rgba(35, 108, 121, 0.38);
}

.control-group button.is-primary {
  border-color: rgba(255, 176, 83, 0.62);
  color: #ffe0b1;
  background: rgba(131, 76, 27, 0.34);
}

.control-actions {
  justify-content: flex-end;
}

.demo-tip {
  position: absolute;
  z-index: 5;
  right: 25px;
  bottom: 109px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #607b80;
  font-size: 8px;
  pointer-events: none;
}

.demo-tip i {
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #4e7178;
}

.demo-toast {
  position: absolute;
  z-index: 20;
  left: 50%;
  bottom: 109px;
  padding: 9px 14px;
  transform: translateX(-50%);
  border: 1px solid rgba(104, 221, 247, 0.3);
  color: #ccecef;
  background: rgba(5, 21, 26, 0.94);
  font-size: 9px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.36);
}

.demo-fallback {
  position: absolute;
  z-index: 30;
  inset: 50% auto auto 50%;
  width: min(340px, calc(100vw - 40px));
  padding: 24px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 120, 96, 0.4);
  color: var(--ink);
  background: rgba(20, 10, 10, 0.94);
  text-align: center;
}

.demo-fallback p {
  margin: 8px 0 0;
  color: #b99a96;
  font-size: 10px;
}

.project-home {
  position: absolute;
  z-index: 80;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 92px 24px 24px;
  background:
    radial-gradient(circle at 50% 38%, rgba(47, 137, 153, 0.16), transparent 34%),
    rgba(2, 10, 13, 0.78);
  backdrop-filter: blur(12px);
}

.project-home[hidden] {
  display: none !important;
}

.project-home-card {
  width: min(760px, 100%);
  max-height: calc(100vh - 122px);
  overflow: auto;
  border: 1px solid rgba(104, 221, 247, 0.26);
  color: var(--ink);
  background: rgba(4, 16, 20, 0.96);
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.56);
}

.project-home-card > header {
  padding: 28px 30px 22px;
  border-bottom: 1px solid var(--line);
}

.project-home-card > header span,
.saved-projects-home > header span,
.workflow-drawer-head span,
.panel-step,
.project-schema-note span,
.ai-pipeline > span {
  color: var(--cyan);
  font: 600 8px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.14em;
}

.project-home-card h1 {
  margin: 10px 0 8px;
  color: #ebf5f3;
  font: 500 31px/1.18 "Songti SC", "STSong", serif;
}

.project-home-card > header p,
.workflow-panel > p,
.project-schema-note p,
.project-home-card > footer {
  color: #80979b;
  font-size: 9px;
  line-height: 1.7;
}

.project-home-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  padding: 1px;
  background: var(--line);
}

.project-home-actions button {
  min-height: 108px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border: 0;
  color: #a9bdbc;
  background: #07171b;
  text-align: left;
  cursor: pointer;
}

.project-home-actions button:hover,
.project-home-actions button.is-primary {
  color: #edffff;
  background: linear-gradient(135deg, rgba(33, 105, 117, 0.62), rgba(7, 26, 31, 0.96));
}

.project-home-actions button > i {
  color: var(--cyan);
  font: 500 25px/1 "SFMono-Regular", Consolas, monospace;
}

.project-home-actions button span {
  display: grid;
  gap: 5px;
}

.project-home-actions button strong {
  font-size: 14px;
}

.project-home-actions button small {
  color: #71878b;
  font-size: 9px;
}

.saved-projects-home {
  padding: 18px 30px 22px;
}

.saved-projects-home > header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 10px;
}

.saved-projects-home > header strong {
  color: #afc3c2;
  font-size: 11px;
}

.project-home-card > footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 30px;
  border-top: 1px solid var(--line);
}

.project-home-card > footer i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #67e5a5;
  box-shadow: 0 0 11px rgba(103, 229, 165, 0.76);
}

.workflow-bar {
  position: absolute;
  z-index: 18;
  top: 72px;
  left: 0;
  right: 0;
  height: 49px;
  display: flex;
  justify-content: center;
  gap: 1px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 13, 17, 0.82);
  backdrop-filter: blur(13px);
}

.workflow-bar button {
  position: relative;
  min-width: 126px;
  display: grid;
  grid-template-columns: 25px 1fr;
  grid-template-rows: auto auto;
  align-content: center;
  gap: 1px 7px;
  padding: 6px 11px;
  border: 0;
  border-left: 1px solid rgba(104, 221, 247, 0.09);
  color: #769095;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.workflow-bar button::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
}

.workflow-bar button i {
  grid-row: 1 / 3;
  align-self: center;
  color: #4d6970;
  font: 600 10px/1 "SFMono-Regular", Consolas, monospace;
}

.workflow-bar button span {
  color: #9cb2b4;
  font-size: 9px;
  font-weight: 600;
}

.workflow-bar button small {
  color: #577176;
  font-size: 7px;
}

.workflow-bar button.is-complete i {
  color: #67e5a5;
}

.workflow-bar button.is-complete i::before {
  content: "✓";
  margin-right: 3px;
}

.workflow-bar button.is-active {
  color: #ebffff;
  background: rgba(42, 116, 129, 0.2);
}

.workflow-bar button.is-active::after {
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(104, 221, 247, 0.7);
}

.workflow-bar button.is-active i,
.workflow-bar button.is-active span {
  color: #e5fbff;
}

.workflow-drawer {
  position: absolute;
  z-index: 17;
  top: 134px;
  right: 24px;
  bottom: 111px;
  width: 334px;
  overflow: hidden;
  border: 1px solid rgba(104, 221, 247, 0.22);
  color: var(--ink);
  background: rgba(4, 16, 20, 0.91);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(15px);
  transition: width 180ms ease, opacity 180ms ease;
}

.workflow-drawer.is-collapsed {
  width: 46px;
}

.workflow-drawer.is-collapsed .workflow-drawer-head > div,
.workflow-drawer.is-collapsed .workflow-panel {
  display: none;
}

.workflow-drawer-head {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px 10px 15px;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 22, 27, 0.94);
}

.workflow-drawer-head > div {
  display: grid;
  gap: 4px;
}

.workflow-drawer-head strong {
  color: #d2e6e5;
  font-size: 12px;
}

.workflow-drawer-head button {
  width: 29px;
  height: 29px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  color: #779095;
  background: #07171c;
  cursor: pointer;
}

.workflow-panel {
  height: calc(100% - 52px);
  overflow-y: auto;
  padding: 17px 17px 24px;
}

.workflow-panel[hidden] {
  display: none !important;
}

.workflow-panel h2 {
  margin: 7px 0 7px;
  color: #dceceb;
  font: 500 20px/1.22 "Songti SC", "STSong", serif;
}

.workflow-panel > p {
  margin: 0 0 14px;
}

.workflow-field {
  position: relative;
  display: grid;
  gap: 6px;
  margin-bottom: 11px;
}

.workflow-field > span {
  color: #738b90;
  font-size: 8px;
}

.workflow-field input,
.workflow-field select {
  width: 100%;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid rgba(104, 221, 247, 0.16);
  border-radius: 0;
  outline: 0;
  color: #d7e8e6;
  background: rgba(3, 13, 17, 0.88);
  font-size: 10px;
}

.workflow-field input:focus,
.workflow-field select:focus {
  border-color: rgba(104, 221, 247, 0.65);
}

.workflow-field small {
  position: absolute;
  right: 10px;
  bottom: 11px;
  color: #61797e;
  font-size: 8px;
}

.workflow-action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.workflow-action-grid button,
.wide-button,
.export-actions button {
  min-height: 39px;
  border: 1px solid rgba(104, 221, 247, 0.16);
  color: #8ea6a8;
  background: #07171c;
  font-size: 9px;
  cursor: pointer;
}

.workflow-action-grid button:hover,
.workflow-action-grid button.is-active,
.workflow-action-grid button.is-primary,
.wide-button:hover,
.wide-button.is-primary,
.export-actions button:hover,
.export-actions button.is-primary {
  border-color: rgba(104, 221, 247, 0.6);
  color: #e3fbff;
  background: rgba(38, 107, 119, 0.34);
}

.project-schema-note {
  display: grid;
  gap: 5px;
  margin-top: 14px;
  padding: 12px;
  border: 1px solid rgba(104, 221, 247, 0.12);
  background: rgba(104, 221, 247, 0.035);
}

.project-schema-note strong {
  color: #c6dad9;
  font: 500 9px/1.3 "SFMono-Regular", Consolas, monospace;
}

.project-schema-note p {
  margin: 0;
}

.floor-tool-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
}

.plan-editor-wrap {
  position: relative;
  margin: 2px 0 10px;
  border: 1px solid rgba(104, 221, 247, 0.18);
  background: #07161a;
}

#plan-editor {
  display: block;
  width: 100%;
  aspect-ratio: 320 / 224;
  cursor: default;
  touch-action: none;
  user-select: none;
}

#plan-editor.is-drawing {
  cursor: crosshair;
  box-shadow: inset 0 0 0 1px rgba(104, 221, 247, 0.38);
}

.plan-editor-wrap > span {
  position: absolute;
  right: 7px;
  bottom: 5px;
  color: rgba(162, 193, 197, 0.55);
  font: 500 6px/1 "SFMono-Regular", Consolas, monospace;
  pointer-events: none;
}

.plan-room {
  stroke: rgba(208, 246, 250, 0.58);
  stroke-width: 1;
  fill: rgba(65, 105, 113, 0.72);
  pointer-events: none;
}

.plan-room.is-living { fill: rgba(55, 109, 117, 0.8); }
.plan-room.is-dining { fill: rgba(116, 97, 68, 0.78); }
.plan-room.is-bedroom { fill: rgba(77, 97, 117, 0.82); }
.plan-room.is-kitchen { fill: rgba(61, 111, 96, 0.8); }
.plan-room.is-bathroom { fill: rgba(48, 100, 116, 0.82); }

.plan-room-name {
  fill: #e2f1ef;
  font: 600 8px "PingFang SC", sans-serif;
  pointer-events: none;
}

.plan-room-draft {
  fill: rgba(104, 221, 247, 0.18);
  stroke: #68ddf7;
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
  pointer-events: none;
}

.plan-wall {
  stroke: #d9e7e9;
  stroke-linecap: square;
  vector-effect: non-scaling-stroke;
  pointer-events: stroke;
  cursor: pointer;
}

.plan-wall.is-selected {
  stroke: #68ddf7;
  filter: drop-shadow(0 0 3px rgba(104, 221, 247, .65));
}

.plan-pipe {
  fill: none;
  stroke: #ff5c49;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  pointer-events: stroke;
}

.plan-pipe.is-cold {
  stroke: #3b9fff;
}

.plan-pipe.is-air,
.plan-pipe.is-supplyAir {
  stroke: #57e1aa;
}

.plan-pipe.is-returnAir {
  stroke: #ffaa64;
}

.plan-pipe.is-outdoorAir {
  stroke: #7bd7f5;
}

.plan-pipe.is-exhaustAir {
  stroke: #b7a5ff;
}

.plan-device {
  color: #68ddf7;
  cursor: pointer;
}

.plan-device rect {
  fill: #183a42;
  stroke: rgba(104, 221, 247, 0.8);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.plan-device text {
  fill: #dffaff;
  font: 600 5px "SFMono-Regular", Consolas, monospace;
  pointer-events: none;
}

.plan-device.is-selected rect {
  fill: #255e6b;
  stroke: #fff3b2;
  stroke-width: 2;
}

.floor-actions {
  margin-bottom: 10px;
}

.device-palette,
.pipe-palette {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 10px;
}

.device-palette button,
.pipe-palette button {
  min-height: 57px;
  display: grid;
  place-items: center;
  gap: 4px;
  padding: 7px 4px;
  border: 1px solid rgba(104, 221, 247, 0.14);
  color: #80979b;
  background: #07171c;
  font-size: 8px;
  cursor: pointer;
}

.device-palette button i {
  color: #68ddf7;
  font: 600 10px/1 "SFMono-Regular", Consolas, monospace;
}

.device-palette button:hover,
.device-palette button.is-active,
.pipe-palette button:hover,
.pipe-palette button.is-active {
  border-color: rgba(104, 221, 247, 0.62);
  color: #e5fbff;
  background: rgba(35, 104, 116, 0.34);
}

.pipe-palette button i {
  width: 34px;
  height: 4px;
  border-radius: 4px;
  background: #ff5c49;
  box-shadow: 0 0 9px rgba(255, 92, 73, 0.55);
}

.pipe-palette button[data-pipe-tool="cold"] i {
  background: #3b9fff;
  box-shadow: 0 0 9px rgba(59, 159, 255, 0.55);
}

.pipe-palette button[data-pipe-tool="air"] i {
  background: #66d69a;
  box-shadow: 0 0 9px rgba(102, 214, 154, 0.55);
}

.pipe-palette button[data-pipe-tool="supplyAir"] i {
  background: #57e1aa;
  box-shadow: 0 0 9px rgba(87, 225, 170, 0.55);
}

.pipe-palette button[data-pipe-tool="returnAir"] i {
  background: #ffaa64;
  box-shadow: 0 0 9px rgba(255, 170, 100, 0.55);
}

.tool-status {
  min-height: 38px;
  margin-bottom: 10px;
  padding: 10px;
  border-left: 2px solid #d6a45c;
  color: #a68f6c;
  background: rgba(214, 164, 92, 0.055);
  font-size: 8px;
  line-height: 1.6;
}

.record-list,
.saved-project-list {
  display: grid;
  gap: 5px;
  margin-top: 11px;
}

.record-list > p,
.saved-project-list > p {
  margin: 0;
  padding: 11px;
  border: 1px dashed rgba(104, 221, 247, 0.16);
  color: #607a7f;
  font-size: 8px;
  text-align: center;
}

.record-row,
.saved-project-list article {
  min-height: 47px;
  display: grid;
  grid-template-columns: 30px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border: 1px solid rgba(104, 221, 247, 0.11);
  background: rgba(4, 15, 19, 0.72);
}

.record-row > i {
  color: var(--cyan);
  font: 600 8px/1 "SFMono-Regular", Consolas, monospace;
}

.record-row > span,
.saved-project-list article > span {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.record-row strong,
.saved-project-list article strong {
  overflow: hidden;
  color: #bcd0cf;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.record-row small,
.saved-project-list article small {
  color: #5f797e;
  font-size: 7px;
}

.record-row button,
.saved-project-list article button {
  min-height: 29px;
  padding: 5px 8px;
  border: 1px solid rgba(104, 221, 247, 0.13);
  color: #789094;
  background: #07171c;
  font-size: 7px;
  cursor: pointer;
}

.saved-project-list article {
  grid-template-columns: 1fr auto;
}

.saved-project-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 5px;
}

.saved-project-actions button:last-child {
  color: #d7958d;
  border-color: rgba(232, 92, 74, .22);
}

.saved-project-list article.is-recovery-draft {
  border-color: rgba(214, 164, 92, .36);
  box-shadow: inset 3px 0 0 #d6a45c;
}

.wide-button {
  width: 100%;
  margin-top: 10px;
}

.auto-plan-card {
  display: grid;
  gap: 9px;
  margin-top: 14px;
  padding: 12px;
  border: 1px solid rgba(87, 225, 170, 0.2);
  background: linear-gradient(145deg, rgba(24, 74, 71, 0.18), rgba(4, 17, 21, 0.72));
}

.auto-plan-card > header {
  display: grid;
  gap: 4px;
}

.auto-plan-card > header span {
  color: #57e1aa;
  font: 600 7px/1 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.08em;
}

.auto-plan-card > header strong {
  color: #dff8ee;
  font-size: 12px;
  font-weight: 600;
}

.auto-plan-card > p {
  margin: 0;
  color: #789294;
  font-size: 8px;
  line-height: 1.65;
}

.auto-plan-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
}

.auto-plan-fields .workflow-field {
  margin: 0;
}

.auto-plan-result {
  padding: 9px 10px;
  border-left: 2px solid #526b70;
  color: #7f9698;
  background: rgba(0, 0, 0, 0.16);
  font-size: 8px;
  line-height: 1.6;
}

.auto-plan-result.is-success {
  border-left-color: #57e1aa;
  color: #aeead1;
}

.auto-plan-result.is-error {
  border-left-color: #ff7665;
  color: #f0a197;
}

.export-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
}

.export-actions button {
  min-height: 68px;
  display: grid;
  align-content: center;
  gap: 5px;
  padding: 10px;
  text-align: left;
}

.export-actions button strong {
  font-size: 10px;
}

.export-actions button small {
  color: #5f797e;
  font-size: 7px;
}

.export-preview {
  overflow: hidden;
  margin: 10px 0 0;
  border: 1px solid rgba(104, 221, 247, 0.18);
  background: #041014;
}

.export-preview[hidden] {
  display: none;
}

.export-preview img {
  width: 100%;
  max-height: 150px;
  display: block;
  object-fit: cover;
  object-position: center;
  background: #08171c;
}

.export-preview figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 9px;
}

.export-preview figcaption strong {
  color: #a9c1c3;
  font-size: 8px;
}

.export-preview figcaption span {
  color: #68ddf7;
  font: 500 6px/1.4 "SFMono-Regular", Consolas, monospace;
  text-align: right;
}

.ai-pipeline {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid rgba(104, 221, 247, 0.13);
  background: rgba(104, 221, 247, 0.035);
}

.ai-pipeline ol {
  display: grid;
  gap: 1px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  background: rgba(104, 221, 247, 0.1);
}

.ai-pipeline li {
  min-height: 37px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px;
  background: #07171c;
}

.ai-pipeline li i {
  color: var(--cyan);
  font: 600 7px/1 "SFMono-Regular", Consolas, monospace;
}

.ai-pipeline li b {
  color: #92aaac;
  font-size: 8px;
  font-weight: 500;
}

#three-bedroom-canvas.is-editing {
  cursor: crosshair;
}

#three-bedroom-canvas.is-dragging-device {
  cursor: move;
}

.project-tree {
  position: absolute;
  z-index: 8;
  top: 424px;
  left: 28px;
  bottom: 112px;
  width: 280px;
  min-height: 150px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(5, 20, 25, 0.91), rgba(4, 14, 18, 0.72));
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(13px);
}

.project-tree > header,
.device-inspector > header {
  display: grid;
  gap: 5px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
}

.project-tree > header span,
.device-inspector > header span {
  color: var(--cyan);
  font: 600 7px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.13em;
}

.project-tree > header strong,
.device-inspector > header strong {
  color: #dce9e7;
  font-size: 12px;
}

.project-tree-content {
  height: calc(100% - 58px);
  overflow: auto;
  padding: 9px;
}

.project-tree-content > p {
  margin: 8px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.6;
}

.tree-row {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 7px;
  width: 100%;
  min-height: 34px;
  margin: 1px 0;
  padding: 5px 7px;
  border: 1px solid transparent;
  color: #a9bfc0;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.tree-row:hover,
.tree-row.is-selected {
  border-color: rgba(104, 221, 247, 0.2);
  background: rgba(104, 221, 247, 0.08);
  color: #e3f2f0;
}

.tree-row i {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(104, 221, 247, 0.18);
  color: var(--cyan);
  font: 600 6px/1 "SFMono-Regular", Consolas, monospace;
}

.tree-row span {
  display: grid;
  gap: 2px;
  font-size: 9px;
}

.tree-row span strong {
  color: inherit;
  font-size: 9px;
  font-weight: 600;
}

.tree-row small {
  color: #617b7f;
  font-size: 7px;
}

.tree-row b {
  color: #6d878a;
  font: 500 7px/1 "SFMono-Regular", Consolas, monospace;
}

.tree-row[data-depth="1"] { padding-left: 17px; }
.tree-row[data-depth="2"] { padding-left: 29px; }
.tree-row[data-depth="3"] { padding-left: 41px; }
.tree-row[data-depth="4"] { padding-left: 53px; }

.tree-visibility {
  border: 0;
  color: #8aa3a5;
  background: transparent;
  cursor: pointer;
}

.tree-visibility[aria-pressed="false"] {
  color: #42565a;
  text-decoration: line-through;
}

.device-inspector {
  margin: 11px 0;
  border: 1px solid rgba(104, 221, 247, 0.17);
  background: rgba(104, 221, 247, 0.035);
}

.device-inspector > header {
  padding: 10px 11px;
}

.device-inspector .inspector-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
  padding: 9px 9px 0;
}

.device-inspector > .workflow-field,
.device-inspector > .workflow-action-grid {
  margin: 8px 9px;
}

.boiler-effect-controls {
  display: grid;
  gap: 8px;
  margin: 9px;
  padding-top: 9px;
  border-top: 1px solid rgba(104, 221, 247, 0.14);
}

.boiler-effect-controls[hidden] {
  display: none;
}

.boiler-effect-controls .tool-status {
  margin: 0;
  color: #8fddeb;
}

.demo-intro {
  top: 140px;
}

.demo-legend {
  display: none;
}

@media (max-width: 900px) {
  .demo-topbar {
    grid-template-columns: 1fr auto;
  }

  .demo-status {
    display: none;
  }

  .demo-intro {
    display: none;
    top: 130px;
    left: 14px;
    width: 250px;
  }

  .demo-intro h1 {
    font-size: 25px;
  }

  .demo-legend {
    top: 90px;
    right: 14px;
  }

  .demo-controls {
    grid-template-columns: 1fr;
    bottom: 12px;
    width: calc(100vw - 24px);
  }

  .rotation-float {
    left: 12px;
    bottom: 174px;
  }

  .control-group {
    min-height: 48px;
    justify-content: center;
  }

  .demo-tip {
    display: none;
  }

  .demo-toast {
    bottom: 174px;
  }

  .workflow-bar {
    justify-content: flex-start;
    overflow-x: auto;
    padding: 0 8px;
  }

  .workflow-bar button {
    min-width: 112px;
    flex: 0 0 auto;
  }

  .workflow-drawer {
    top: 132px;
    right: 12px;
    bottom: 170px;
    width: 320px;
  }

  .project-tree {
    top: 132px;
    left: 12px;
    bottom: 170px;
    width: 250px;
  }

  .project-home {
    padding: 78px 14px 14px;
  }
}

@media (max-width: 560px) {
  .demo-shell {
    min-height: 500px;
  }

  .demo-topbar {
    min-height: 60px;
    padding: 9px 12px;
  }

  .demo-full-link {
    padding: 8px;
    font-size: 8px;
  }

  .demo-intro {
    top: 76px;
    width: 210px;
    padding: 13px 14px;
  }

  .demo-intro h1 {
    margin: 7px 0;
    font-size: 21px;
  }

  .demo-intro p,
  .demo-intro dl,
  .demo-legend {
    display: none;
  }

  .control-group {
    overflow-x: auto;
    justify-content: flex-start;
    padding: 7px 8px;
  }

  .control-group button {
    flex: 0 0 auto;
    min-height: 31px;
    padding: 6px 9px;
  }

  .rotation-float {
    min-width: 0;
    min-height: 44px;
    bottom: 169px;
    padding: 6px 10px 6px 6px;
  }

  .rotation-float > i {
    width: 31px;
    height: 31px;
  }

  .rotation-float small {
    display: none;
  }

  .project-home-card {
    max-height: calc(100vh - 88px);
  }

  .project-home-card > header {
    padding: 20px 18px 16px;
  }

  .project-home-card h1 {
    font-size: 24px;
  }

  .project-home-actions {
    grid-template-columns: 1fr;
  }

  .project-home-actions button {
    min-height: 78px;
    padding: 14px 18px;
  }

  .saved-projects-home {
    padding: 14px 18px 17px;
  }

  .workflow-bar {
    top: 60px;
  }

  .workflow-drawer {
    top: 119px;
    left: 10px;
    right: 10px;
    bottom: 166px;
    width: auto;
  }

  .workflow-drawer.is-collapsed {
    left: auto;
    width: 46px;
  }


  .project-tree {
    display: none;
  }

  .workflow-panel {
    padding: 14px 13px 20px;
  }

  .floor-tool-row,
  .export-actions {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   BIM workstation shell
   A denser, product-style layout inspired by common desktop BIM workflows.
   The application keeps its own brand, data model and interaction code.
   -------------------------------------------------------------------------- */

:root {
  --ink: #e7edf3;
  --muted: #8995a3;
  --cyan: #2bbcf2;
  --panel: rgba(29, 35, 43, 0.97);
  --line: rgba(155, 172, 190, 0.19);
  --surface-0: #12171d;
  --surface-1: #181e25;
  --surface-2: #202731;
  --surface-3: #28313c;
  --accent-soft: rgba(43, 188, 242, 0.12);
  --accent-line: rgba(43, 188, 242, 0.48);
}

html,
body {
  background: var(--surface-0);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.demo-shell {
  background:
    radial-gradient(circle at 57% 43%, rgba(46, 102, 128, 0.18), transparent 36%),
    linear-gradient(145deg, #18212a, #0d1217 76%);
}

.demo-shell::before {
  opacity: 0.07;
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, transparent 88px, #000 180px, #000 82%, transparent);
}

.demo-topbar {
  z-index: 30;
  min-height: 54px;
  height: 54px;
  grid-template-columns: 270px minmax(180px, 1fr) auto;
  gap: 18px;
  padding: 0 16px;
  border-bottom-color: #343d48;
  background: #171c22;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  backdrop-filter: none;
}

.demo-brand {
  gap: 11px;
}

.demo-brand img {
  width: 30px;
  height: 30px;
  filter: drop-shadow(0 0 9px rgba(43, 188, 242, 0.18));
}

.demo-brand strong {
  color: #f3f7fb;
  font-size: 14px;
  letter-spacing: 0.06em;
}

.demo-brand small {
  color: #7f8b98;
  font-size: 9px;
  letter-spacing: 0.02em;
}

.demo-project-context {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.demo-project-context > span {
  color: #697582;
  font-size: 10px;
}

.demo-status {
  min-width: 0;
  gap: 7px;
  color: #b9c4ce;
  font-size: 10px;
  letter-spacing: 0;
}

.demo-status i,
.demo-full-link i {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #56d996;
  box-shadow: 0 0 9px rgba(86, 217, 150, 0.58);
}

.demo-status strong {
  overflow: hidden;
  color: #d5dde5;
  font-size: 11px;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-status b {
  color: #63707d;
  font-size: 8px;
}

.demo-header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.workspace-view-switch {
  height: 30px;
  display: flex;
  align-items: center;
  padding: 2px;
  border: 1px solid #343e49;
  border-radius: 4px;
  background: #10151a;
}

.workspace-view-switch button {
  min-width: 38px;
  height: 24px;
  padding: 0 9px;
  border: 0;
  border-radius: 3px;
  color: #788592;
  background: transparent;
  font-size: 10px;
  cursor: pointer;
}

.workspace-view-switch button:hover,
.workspace-view-switch button.is-active {
  color: #ecf9ff;
  background: #167da8;
}

.header-save-button {
  height: 30px;
  padding: 0 12px;
  border: 1px solid #3a4652;
  border-radius: 4px;
  color: #c4ced8;
  background: #252d36;
  font-size: 10px;
  cursor: pointer;
}

.header-save-button:hover {
  border-color: var(--accent-line);
  color: #effbff;
  background: #263d49;
}

.header-save-button span {
  margin-right: 5px;
  color: #73808c;
  font: 500 8px/1 "SFMono-Regular", Consolas, monospace;
}

.demo-full-link {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 10px;
  border-color: #343e49;
  border-radius: 4px;
  color: #8996a3;
  background: #12171d;
  font-size: 9px;
}

.workflow-bar {
  z-index: 28;
  top: 54px;
  height: 54px;
  justify-content: flex-start;
  gap: 0;
  padding: 0 16px;
  border-bottom-color: #343d48;
  background: #20262e;
  box-shadow: 0 5px 18px rgba(0, 0, 0, 0.18);
  backdrop-filter: none;
}

.workflow-bar-title {
  width: 176px;
  flex: 0 0 auto;
  display: grid;
  align-content: center;
  gap: 2px;
  padding-left: 4px;
  border-right: 1px solid #35404a;
}

.workflow-bar-title strong {
  color: #d6dfe8;
  font-size: 12px;
  font-weight: 600;
}

.workflow-bar-title small {
  color: #5f6b78;
  font: 500 7px/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.1em;
}

.workflow-bar button {
  min-width: 118px;
  max-width: 168px;
  flex: 1 1 0;
  grid-template-columns: 28px 1fr;
  gap: 2px 7px;
  padding: 6px 13px;
  border-left: 0;
  border-right: 1px solid rgba(155, 172, 190, 0.12);
}

.workflow-bar button::after {
  height: 3px;
}

.workflow-bar button i {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid #3b4651;
  border-radius: 50%;
  color: #6f7c89;
  font-size: 8px;
  font-style: normal;
}

.workflow-bar button span {
  color: #a8b3be;
  font-size: 11px;
  font-weight: 500;
}

.workflow-bar button small {
  color: #66727e;
  font-size: 8px;
}

.workflow-bar button:hover {
  background: rgba(255, 255, 255, 0.035);
}

.workflow-bar button.is-active {
  background: linear-gradient(to bottom, rgba(43, 188, 242, 0.11), rgba(43, 188, 242, 0.04));
}

.workflow-bar button.is-active::after {
  background: #2bbcf2;
  box-shadow: none;
}

.workflow-bar button.is-active i {
  border-color: rgba(43, 188, 242, 0.55);
  color: #e9faff;
  background: #167da8;
}

.workflow-bar button.is-active span {
  color: #eefaff;
}

.workflow-bar button.is-complete i {
  border-color: rgba(86, 217, 150, 0.45);
  color: #73dda6;
}

.workflow-bar button.is-complete i::before {
  margin-right: 2px;
}

.project-home {
  z-index: 24;
  inset: 108px 0 0;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 40%, rgba(43, 188, 242, 0.1), transparent 35%),
    rgba(12, 16, 21, 0.79);
  backdrop-filter: blur(9px);
}

.project-home-card {
  width: min(720px, 100%);
  max-height: calc(100vh - 150px);
  border-color: #3a4550;
  border-radius: 6px;
  background: #1a2027;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.5);
}

.project-home-card > header {
  padding: 25px 28px 20px;
}

.project-home-card h1 {
  margin-top: 8px;
  font: 600 27px/1.25 Inter, "PingFang SC", sans-serif;
}

.project-home-card > header p,
.workflow-panel > p,
.project-schema-note p,
.project-home-card > footer {
  font-size: 10px;
}

.project-home-actions button {
  background: #202730;
}

.project-home-actions button:hover,
.project-home-actions button.is-primary {
  background: linear-gradient(135deg, rgba(22, 125, 168, 0.54), rgba(29, 39, 48, 0.96));
}

.demo-intro {
  top: 120px;
  left: 12px;
  width: 264px;
  padding: 16px;
  border-color: #38434e;
  border-radius: 4px;
  background: rgba(28, 34, 42, 0.96);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
  backdrop-filter: none;
}

.demo-intro > span,
.demo-legend > span,
.control-group > span {
  font-size: 8px;
  letter-spacing: 0.11em;
}

.demo-intro h1 {
  margin: 8px 0 9px;
  color: #edf3f8;
  font: 600 23px/1.23 Inter, "PingFang SC", sans-serif;
}

.demo-intro p {
  color: #8d99a5;
  font-size: 9px;
  line-height: 1.62;
}

.demo-intro dl {
  margin-top: 13px;
  background: #37424d;
}

.demo-intro dl div {
  padding: 9px 7px;
  background: #202730;
}

.demo-intro dt {
  color: #73808c;
  font-size: 8px;
}

.demo-intro dd {
  color: #d1d9e1;
  font-size: 10px;
}

.project-tree {
  top: 350px;
  left: 12px;
  bottom: 72px;
  width: 264px;
  border-color: #38434e;
  border-radius: 4px;
  background: rgba(28, 34, 42, 0.97);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
  backdrop-filter: none;
}

.project-tree > header,
.device-inspector > header {
  padding: 11px 12px;
  background: #222a33;
}

.project-tree-content {
  padding: 7px;
}

.tree-row {
  min-height: 36px;
  border-radius: 3px;
}

.tree-row:hover,
.tree-row.is-selected {
  border-color: rgba(43, 188, 242, 0.3);
  background: rgba(43, 188, 242, 0.1);
}

.workflow-drawer {
  top: 120px;
  right: 12px;
  bottom: 72px;
  width: 350px;
  border-color: #3a4550;
  border-radius: 4px;
  background: rgba(28, 34, 42, 0.98);
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.3);
  backdrop-filter: none;
}

.workflow-drawer-head {
  min-height: 50px;
  padding: 9px 11px 9px 14px;
  border-bottom-color: #39434e;
  background: #222a33;
}

.workflow-drawer-head::before {
  content: "";
  width: 3px;
  align-self: stretch;
  margin-right: 2px;
  border-radius: 2px;
  background: #2bbcf2;
}

.workflow-drawer-head > div {
  flex: 1;
}

.workflow-drawer-head strong {
  font-size: 13px;
}

.workflow-drawer-head button {
  border-color: #3a4651;
  border-radius: 3px;
  background: #171c22;
}

.workflow-panel {
  height: calc(100% - 50px);
  padding: 16px 16px 24px;
}

.workflow-panel h2 {
  color: #edf3f8;
  font: 600 18px/1.28 Inter, "PingFang SC", sans-serif;
}

.workflow-panel > p {
  color: #8c98a4;
  font-size: 10px;
  line-height: 1.65;
}

.workflow-field > span {
  color: #8a96a2;
  font-size: 9px;
}

.workflow-field input,
.workflow-field select {
  min-height: 36px;
  border-color: #3a4651;
  border-radius: 3px;
  color: #dae2e9;
  background: #171c22;
  font-size: 11px;
}

.workflow-field input:focus,
.workflow-field select:focus {
  border-color: #2bbcf2;
  box-shadow: 0 0 0 2px rgba(43, 188, 242, 0.08);
}

.workflow-action-grid button,
.wide-button,
.export-actions button,
.device-palette button,
.pipe-palette button {
  border-color: #3a4651;
  border-radius: 3px;
  color: #9eabb7;
  background: #202730;
}

.workflow-action-grid button:hover,
.workflow-action-grid button.is-active,
.workflow-action-grid button.is-primary,
.wide-button:hover,
.wide-button.is-primary,
.export-actions button:hover,
.export-actions button.is-primary,
.device-palette button:hover,
.device-palette button.is-active,
.pipe-palette button:hover,
.pipe-palette button.is-active {
  border-color: rgba(43, 188, 242, 0.58);
  color: #eefaff;
  background: #1f4557;
}

.project-schema-note,
.auto-plan-card,
.ai-pipeline,
.device-inspector {
  border-color: #3a4651;
  background: #202730;
}

.plan-editor-wrap {
  border-color: #3a4651;
  border-radius: 3px;
  background: #151a20;
}

.rotation-float {
  z-index: 19;
  top: 120px;
  left: 284px;
  bottom: auto;
  min-width: 132px;
  min-height: 42px;
  gap: 8px;
  padding: 6px 10px 6px 6px;
  border-color: #46515c;
  border-radius: 4px;
  color: #c5ced7;
  background: rgba(27, 34, 42, 0.96);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.28);
  backdrop-filter: none;
}

.rotation-float:hover,
.rotation-float:focus-visible,
.rotation-float[aria-pressed="false"] {
  border-color: var(--accent-line);
  color: #eaf9ff;
  background: #203b48;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.28);
}

.rotation-float > i,
.rotation-float[aria-pressed="false"] > i {
  width: 29px;
  height: 29px;
  color: #effaff;
  background: #167da8;
}

.rotation-float strong {
  font-size: 10px;
}

.rotation-float small,
.rotation-float[aria-pressed="false"] small {
  color: #7b8995;
  font-size: 7px;
}

.demo-controls {
  z-index: 20;
  bottom: 10px;
  width: min(760px, calc(100vw - 590px));
  min-width: 610px;
  grid-template-columns: 0.9fr 1.1fr auto;
  border-color: #3b4651;
  border-radius: 4px;
  background: #3b4651;
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.32);
  backdrop-filter: none;
}

.control-group {
  min-height: 50px;
  padding: 8px 10px;
  background: rgba(28, 34, 42, 0.98);
}

.control-group button {
  min-height: 30px;
  padding: 6px 10px;
  border-color: #3a4651;
  border-radius: 3px;
  color: #8996a2;
  background: #202730;
  font-size: 9px;
}

.control-group button:hover,
.control-group button.is-active {
  border-color: rgba(43, 188, 242, 0.52);
  color: #edfaff;
  background: #1f4557;
}

.control-group button.is-primary {
  border-color: rgba(43, 188, 242, 0.58);
  color: #eefaff;
  background: #167da8;
}

.demo-tip {
  right: 374px;
  bottom: 67px;
  color: #65727e;
}

.demo-toast {
  bottom: 70px;
  border-color: rgba(43, 188, 242, 0.38);
  border-radius: 4px;
  color: #d9f4ff;
  background: #1d2b33;
  font-size: 10px;
}

.demo-legend {
  display: none;
}

@media (max-width: 1180px) {
  .demo-topbar {
    grid-template-columns: 245px minmax(150px, 1fr) auto;
  }

  .workflow-bar-title {
    display: none;
  }

  .workflow-bar {
    overflow-x: auto;
    padding: 0 8px;
  }

  .workflow-bar button {
    min-width: 128px;
    flex: 1 0 128px;
  }

  .demo-intro,
  .project-tree {
    display: none;
  }

  .rotation-float {
    left: 12px;
  }

  .demo-controls {
    width: min(700px, calc(100vw - 390px));
    min-width: 560px;
    transform: translateX(calc(-50% - 170px));
  }
}

@media (max-width: 900px) {
  .demo-topbar {
    grid-template-columns: 1fr auto;
  }

  .demo-project-context,
  .demo-full-link {
    display: none;
  }

  .workflow-drawer {
    top: 118px;
    right: 12px;
    bottom: 176px;
  }

  .rotation-float {
    top: 118px;
  }

  .demo-controls {
    bottom: 12px;
    width: calc(100vw - 24px);
    min-width: 0;
    grid-template-columns: 1fr;
    transform: translateX(-50%);
  }

  .control-group {
    min-height: 48px;
  }

  .demo-toast {
    bottom: 176px;
  }
}

@media (max-width: 620px) {
  .demo-topbar {
    height: 54px;
    min-height: 54px;
    padding: 0 10px;
  }

  .demo-brand small,
  .header-save-button span {
    display: none;
  }

  .demo-brand strong {
    font-size: 12px;
  }

  .demo-header-actions {
    gap: 5px;
  }

  .workspace-view-switch button {
    min-width: 32px;
    padding: 0 7px;
  }

  .header-save-button {
    padding: 0 9px;
  }

  .workflow-bar {
    top: 54px;
    height: 54px;
  }

  .workflow-bar button {
    min-width: 116px;
    flex-basis: 116px;
    padding-inline: 9px;
  }

  .project-home {
    inset: 108px 0 0;
    padding: 12px;
  }

  .project-home-card {
    max-height: calc(100vh - 132px);
  }

  .project-home-card h1 {
    font-size: 22px;
  }

  .workflow-drawer {
    top: 118px;
    left: 10px;
    right: 10px;
    bottom: 166px;
    width: auto;
  }

  .workflow-drawer.is-collapsed {
    left: auto;
  }

  .rotation-float {
    top: 118px;
    left: 10px;
  }
}

/* Final workstation geometry: one command bar, one resource rail, one canvas. */

.demo-topbar {
  height: 56px;
  min-height: 56px;
  grid-template-columns: minmax(260px, 320px) minmax(400px, 1fr) auto;
  gap: 6px;
  padding: 0 10px;
}

.demo-brand-context {
  min-width: 0;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 12px;
  border-right: 1px solid #343d48;
}

.demo-brand-context .demo-brand {
  flex: 0 0 auto;
}

.demo-brand-context .demo-status {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 7px;
  padding-left: 12px;
  border-left: 1px solid #343d48;
}

.demo-brand-context .demo-status > span {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.demo-brand-context .demo-status strong {
  overflow: hidden;
  display: block;
  max-width: 120px;
  color: #cdd6de;
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-brand-context .demo-status b {
  color: #5f6b77;
  font-size: 7px;
}

body[data-project-state="empty"] .demo-status i {
  background: #66727e;
  box-shadow: none;
}

body[data-project-state="dirty"] .demo-status i {
  background: #e6a23c;
  box-shadow: 0 0 9px rgba(230, 162, 60, 0.55);
}

body[data-project-state="saved"] .demo-status i {
  background: #56d996;
  box-shadow: 0 0 9px rgba(86, 217, 150, 0.58);
}

.workflow-bar {
  position: relative;
  z-index: auto;
  inset: auto;
  height: 56px;
  min-width: 0;
  justify-content: center;
  overflow-x: auto;
  gap: 0;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.workflow-bar button {
  min-width: 66px;
  max-width: 88px;
  height: 56px;
  flex: 1 1 72px;
  grid-template-columns: 20px 1fr;
  grid-template-rows: 1fr;
  align-items: center;
  align-content: center;
  gap: 5px;
  padding: 0 8px;
  border-right-color: rgba(155, 172, 190, 0.1);
  text-align: center;
}

.workflow-bar button i {
  grid-row: auto;
  width: 19px;
  height: 19px;
  border-radius: 4px;
  font-size: 7px;
}

.workflow-bar button span {
  font-size: 10px;
  white-space: nowrap;
}

.workflow-bar button small {
  display: none;
}

.workflow-bar button::after {
  bottom: 0;
  height: 2px;
}

.demo-header-actions {
  gap: 6px;
}

.workspace-view-switch,
.header-save-button,
.demo-full-link {
  height: 28px;
  min-height: 28px;
}

.workspace-view-switch button {
  min-width: 42px;
  height: 22px;
  padding: 0 7px;
}

.header-save-button {
  padding: 0 10px;
}

.demo-full-link {
  padding-inline: 8px;
}

.workspace-rail {
  position: absolute;
  z-index: 21;
  top: 56px;
  left: 0;
  bottom: 0;
  width: 50px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 3px;
  padding: 7px 5px 8px;
  border-right: 1px solid #343d48;
  background: rgba(23, 28, 34, 0.98);
  box-shadow: 4px 0 14px rgba(0, 0, 0, 0.18);
}

.workspace-rail-mark {
  height: 32px;
  display: grid;
  place-items: center;
  margin-bottom: 3px;
  border: 1px solid #35414c;
  border-radius: 4px;
  color: #2bbcf2;
  background: #11161b;
  font: 700 9px/1 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.04em;
}

.workspace-rail button {
  position: relative;
  min-height: 50px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 4px;
  padding: 4px 1px;
  border: 1px solid transparent;
  border-radius: 4px;
  color: #737f8b;
  background: transparent;
  cursor: pointer;
}

.workspace-rail button i {
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  border: 1px solid #3a4550;
  border-radius: 4px;
  color: #909ca8;
  font-size: 10px;
  font-style: normal;
}

.workspace-rail button span {
  font-size: 8px;
}

.workspace-rail button:hover,
.workspace-rail button.is-active {
  border-color: rgba(43, 188, 242, 0.18);
  color: #e8f8ff;
  background: rgba(43, 188, 242, 0.1);
}

.workspace-rail button.is-active::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: -5px;
  width: 2px;
  background: #2bbcf2;
}

.workspace-rail button.is-active i {
  border-color: rgba(43, 188, 242, 0.5);
  color: #effbff;
  background: #167da8;
}

.workspace-rail button.is-complete i::after {
  content: "";
  position: absolute;
  top: 5px;
  right: 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #56d996;
  box-shadow: 0 0 6px rgba(86, 217, 150, 0.5);
}

.workspace-rail-spacer {
  flex: 1;
}

.project-home {
  inset: 56px 300px 0 50px;
  padding: 20px;
}

.project-home-card {
  max-height: calc(100vh - 96px);
}

.demo-intro {
  display: none;
}

.project-tree {
  top: 56px;
  left: 50px;
  bottom: 0;
  width: 254px;
  border-width: 0 1px 0 0;
  border-radius: 0;
  background: rgba(28, 34, 42, 0.98);
  box-shadow: 6px 0 20px rgba(0, 0, 0, 0.18);
}

.workflow-drawer {
  top: 56px;
  right: 0;
  bottom: 0;
  width: 300px;
  border-width: 0 0 0 1px;
  border-radius: 0;
  box-shadow: -7px 0 22px rgba(0, 0, 0, 0.2);
}

.workflow-drawer.is-collapsed {
  width: 42px;
}

.workflow-drawer-head {
  min-height: 44px;
}

.workflow-drawer-head button {
  font-size: 0;
}

.workflow-drawer-head button::before {
  content: "›";
  font-size: 18px;
  line-height: 1;
}

.workflow-drawer.is-collapsed .workflow-drawer-head button::before {
  content: "‹";
}

.workflow-panel {
  height: calc(100% - 44px);
}

.rotation-float {
  display: none;
}

.demo-controls {
  bottom: 12px;
  width: min(520px, calc(100vw - 650px));
  min-width: 430px;
  grid-template-columns: auto auto auto;
  border-radius: 5px;
}

.control-group {
  min-height: 42px;
  padding: 5px 7px;
}

.control-group button {
  min-height: 28px;
  padding: 5px 8px;
}

.demo-tip {
  right: 310px;
  bottom: 60px;
}

.demo-toast {
  bottom: 62px;
}

@media (max-width: 1279px) {
  .demo-topbar {
    grid-template-columns: 210px minmax(360px, 1fr) auto;
  }

  .demo-brand-context .demo-status {
    display: none;
  }

  .project-tree {
    display: none;
  }

  .project-home {
    left: 50px;
  }

  .demo-controls {
    width: min(520px, calc(100vw - 380px));
    min-width: 0;
    transform: translateX(calc(-50% - 125px));
  }
}

@media (max-width: 980px) {
  .demo-topbar {
    grid-template-columns: 164px minmax(300px, 1fr) auto;
  }

  .demo-brand img {
    width: 26px;
    height: 26px;
  }

  .demo-brand small,
  .demo-full-link {
    display: none;
  }

  .workflow-bar button {
    min-width: 58px;
    padding-inline: 5px;
  }

  .workflow-drawer {
    width: 286px;
  }

  .project-home {
    right: 286px;
  }

  .demo-controls {
    left: 62px;
    right: 298px;
    width: auto;
    max-width: 520px;
    min-width: 0;
    transform: none;
  }
}

@media (max-width: 760px) {
  .demo-topbar {
    grid-template-columns: 116px minmax(250px, 1fr) auto;
    padding-inline: 7px;
  }

  .demo-brand strong {
    font-size: 11px;
  }

  .header-save-button {
    display: none;
  }

  .workflow-bar {
    justify-content: flex-start;
  }

  .workflow-bar button {
    min-width: 54px;
    flex-basis: 54px;
    grid-template-columns: 1fr;
    place-items: center;
  }

  .workflow-bar button i {
    display: none;
  }

  .workflow-bar button span {
    font-size: 9px;
  }

  .workspace-view-switch button {
    min-width: 36px;
    padding-inline: 5px;
  }

  .project-home {
    right: 0;
  }

  .workflow-drawer {
    z-index: 23;
    left: 50px;
    right: 0;
    bottom: 58px;
    width: auto;
  }

  .workflow-drawer.is-collapsed {
    left: auto;
    width: 42px;
  }

  .demo-controls {
    z-index: 24;
    left: 58px;
    right: 8px;
    bottom: 8px;
    width: auto;
    max-width: none;
    grid-template-columns: repeat(3, max-content);
    overflow-x: auto;
    transform: none;
  }

  .control-group {
    white-space: nowrap;
  }

  .demo-toast {
    bottom: 60px;
  }
}

@media (max-width: 540px) {
  .demo-topbar {
    grid-template-columns: 92px minmax(210px, 1fr) 74px;
  }

  .demo-brand img {
    display: none;
  }

  .workspace-view-switch button {
    min-width: 31px;
    font-size: 8px;
  }

  .workflow-bar button {
    min-width: 48px;
    flex-basis: 48px;
  }

  .workspace-rail {
    width: 46px;
    padding-inline: 4px;
  }

  .project-home,
  .workflow-drawer {
    left: 46px;
  }

  .demo-controls {
    left: 52px;
  }
}

/* Project-file roundtrip: one entry from home, editor, or delivery panel. */

.project-home-actions button[data-project-action="import"],
.project-home-actions .project-import-status,
.workflow-action-grid .project-import-button,
.export-actions .project-import-button {
  grid-column: 1 / -1;
}

.project-home-actions button[data-project-action="import"] {
  min-height: 82px;
}

.project-import-status {
  margin: 0;
  padding: 9px 11px;
  border: 1px solid #35414c;
  border-left: 3px solid #66727e;
  border-radius: 3px;
  color: #8996a2;
  background: rgba(24, 30, 37, 0.88);
  font-size: 9px;
  line-height: 1.55;
}

.project-home-actions .project-import-status {
  border-width: 0 0 0 3px;
  border-radius: 0;
  background: #1b222a;
}

.project-import-status[data-state="success"] {
  border-left-color: #56d996;
  color: #a9e6c4;
}

.project-import-status[data-state="error"] {
  border-left-color: #ff7665;
  color: #f0a197;
}

.project-import-input {
  position: fixed;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.demo-toast {
  z-index: 90;
}

/* 91COST light workstation + dedicated fresh-air design surface. */

body[data-ui-theme="light"] {
  color-scheme: light;
  --ink: #1f2933;
  --muted: #697681;
  --cyan: #1687b7;
  --panel: rgba(255, 255, 255, 0.96);
  --line: rgba(37, 55, 72, 0.15);
  background: #dfe3e7;
}

body[data-ui-theme="light"] .demo-shell {
  color: #26313b;
  background: #dfe3e7;
}

body[data-ui-theme="light"] .demo-shell::before {
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.8) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.8) 1px, transparent 1px);
}

body[data-ui-theme="light"] .demo-topbar,
body[data-ui-theme="light"] .workspace-rail,
body[data-ui-theme="light"] .workflow-drawer,
body[data-ui-theme="light"] .project-tree,
body[data-ui-theme="light"] .demo-controls,
body[data-ui-theme="light"] .project-home-card {
  color: #26313b;
  border-color: #d8dde3;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 18px rgba(31, 41, 51, 0.08);
  backdrop-filter: none;
}

body[data-ui-theme="light"] .demo-topbar,
body[data-ui-theme="light"] .workspace-rail {
  box-shadow: 0 1px 0 rgba(31, 41, 51, 0.08);
}

body[data-ui-theme="light"] .demo-brand-context,
body[data-ui-theme="light"] .demo-brand-context .demo-status,
body[data-ui-theme="light"] .workflow-drawer-head,
body[data-ui-theme="light"] .project-tree header,
body[data-ui-theme="light"] .control-group,
body[data-ui-theme="light"] .workflow-bar button,
body[data-ui-theme="light"] .workspace-rail button {
  border-color: #dfe3e7;
}

body[data-ui-theme="light"] .demo-brand,
body[data-ui-theme="light"] .demo-brand-context .demo-status strong,
body[data-ui-theme="light"] .workflow-panel h2,
body[data-ui-theme="light"] .workflow-drawer-head strong,
body[data-ui-theme="light"] .project-tree header strong,
body[data-ui-theme="light"] .tree-row strong,
body[data-ui-theme="light"] .control-group button,
body[data-ui-theme="light"] .workflow-bar button,
body[data-ui-theme="light"] .workspace-rail button {
  color: #26313b;
}

body[data-ui-theme="light"] .demo-status b,
body[data-ui-theme="light"] .workflow-panel p,
body[data-ui-theme="light"] .panel-step,
body[data-ui-theme="light"] .workflow-field span,
body[data-ui-theme="light"] .tree-row small,
body[data-ui-theme="light"] .project-tree header span,
body[data-ui-theme="light"] .workflow-drawer-head span {
  color: #78848f;
}

body[data-ui-theme="light"] .workflow-bar button:hover,
body[data-ui-theme="light"] .workspace-rail button:hover,
body[data-ui-theme="light"] .control-group button:hover,
body[data-ui-theme="light"] .workflow-action-grid button:hover,
body[data-ui-theme="light"] .device-palette button:hover,
body[data-ui-theme="light"] .pipe-palette button:hover {
  color: #126f98;
  background: #eef6fb;
}

body[data-ui-theme="light"] .workflow-bar button.is-active,
body[data-ui-theme="light"] .workspace-rail button.is-active,
body[data-ui-theme="light"] .control-group button.is-active,
body[data-ui-theme="light"] .workspace-view-switch button.is-active {
  color: #126f98;
  background: #e8f4fa;
}

body[data-ui-theme="light"] input,
body[data-ui-theme="light"] select,
body[data-ui-theme="light"] .workflow-action-grid button,
body[data-ui-theme="light"] .wide-button,
body[data-ui-theme="light"] .device-palette button,
body[data-ui-theme="light"] .pipe-palette button,
body[data-ui-theme="light"] .record-row,
body[data-ui-theme="light"] .auto-plan-card,
body[data-ui-theme="light"] .project-schema-note,
body[data-ui-theme="light"] .project-import-status,
body[data-ui-theme="light"] .workspace-view-switch,
body[data-ui-theme="light"] .header-save-button,
body[data-ui-theme="light"] .demo-full-link {
  color: #26313b;
  border-color: #d7dde3;
  background: #f8f9fa;
}

body[data-ui-theme="light"] .header-save-button,
body[data-ui-theme="light"] .wide-button.is-primary,
body[data-ui-theme="light"] .workflow-action-grid .is-primary {
  color: #fff;
  border-color: #167ca8;
  background: #1687b7;
}

body[data-ui-theme="light"] .project-home {
  background: rgba(228, 232, 236, 0.9);
}

body[data-ui-theme="light"] .project-home-actions button,
body[data-ui-theme="light"] .saved-project-card,
body[data-ui-theme="light"] .project-home-actions .project-import-status,
body[data-ui-theme="light"] .auto-plan-result,
body[data-ui-theme="light"] .tool-status {
  color: #26313b;
  border-color: #d8dde3;
  background: #f6f8f9;
}

body[data-ui-theme="light"] .project-home-card h1 {
  color: #24313a;
}

body[data-ui-theme="light"] .project-home-card > header p,
body[data-ui-theme="light"] .project-home-card > footer {
  color: #66747e;
}

.header-workbench-button,
.header-theme-button {
  height: 28px;
  min-height: 28px;
  padding: 0 9px;
  border: 1px solid #35414c;
  border-radius: 3px;
  color: #cdd6de;
  background: #1b222a;
  cursor: pointer;
  font-size: 9px;
  white-space: nowrap;
}

.header-workbench-button {
  border-color: #2c9cb6;
  color: #d8fbff;
  background: #177c98;
}

body[data-ui-theme="light"] .header-theme-button {
  color: #4a5661;
  border-color: #d4dae0;
  background: #f7f8fa;
}

body[data-ui-theme="light"] .header-workbench-button {
  color: #fff;
  border-color: #1687b7;
  background: #1687b7;
}

body[data-workspace-mode="freshAir"] .demo-topbar,
body[data-workspace-mode="freshAir"] .workspace-rail,
body[data-workspace-mode="freshAir"] .workflow-drawer,
body[data-workspace-mode="freshAir"] .project-tree,
body[data-workspace-mode="freshAir"] .demo-intro,
body[data-workspace-mode="freshAir"] .demo-legend,
body[data-workspace-mode="freshAir"] .rotation-float,
body[data-workspace-mode="freshAir"] .demo-controls,
body[data-workspace-mode="freshAir"] .demo-tip {
  display: none !important;
}

.fresh-air-workbench {
  --fa-bg: #e5e8eb;
  --fa-canvas: #d7dadd;
  --fa-surface: #ffffff;
  --fa-subtle: #f5f7f8;
  --fa-border: #d7dde2;
  --fa-border-strong: #bdc6cf;
  --fa-ink: #25303a;
  --fa-muted: #6e7a85;
  --fa-accent: #1786b5;
  --fa-accent-soft: #e7f3f8;
  --fa-supply: #16a874;
  --fa-return: #ef8b33;
  --fa-outdoor: #2ca9cf;
  --fa-exhaust: #8d75d6;
  position: absolute;
  z-index: 40;
  inset: 0;
  overflow: hidden;
  color: var(--fa-ink);
  background: transparent;
  pointer-events: none;
  font-size: 12px;
}

body[data-ui-theme="dark"] .fresh-air-workbench {
  --fa-bg: #12171d;
  --fa-canvas: #1a2128;
  --fa-surface: #20272e;
  --fa-subtle: #181f26;
  --fa-border: #35404a;
  --fa-border-strong: #4a5762;
  --fa-ink: #e2e8ed;
  --fa-muted: #95a0aa;
  --fa-accent: #41b7df;
  --fa-accent-soft: #173642;
}

.fa-commandbar,
.fa-solarbar,
.fa-resource-rail,
.fa-plan-stage,
.fa-side-panel,
.fa-bottom-dock {
  pointer-events: auto;
}

.fa-commandbar {
  position: absolute;
  z-index: 50;
  top: 0;
  left: 0;
  right: 0;
  height: 58px;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) auto;
  align-items: stretch;
  border-bottom: 1px solid var(--fa-border);
  background: var(--fa-surface);
}

.fa-brand-block {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  border-right: 1px solid var(--fa-border);
}

.fa-brand-block img {
  width: 34px;
  height: 34px;
}

.fa-brand-block span {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.fa-brand-block strong,
.fa-brand-block small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fa-brand-block strong {
  font-size: 13px;
  letter-spacing: 0.03em;
}

.fa-brand-block small {
  color: var(--fa-muted);
  font-size: 10px;
}

.fa-command-scroll {
  min-width: 0;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}

.fa-command-scroll::-webkit-scrollbar {
  display: none;
}

.fa-command-group {
  flex: 0 0 auto;
  display: flex;
  align-items: stretch;
  padding: 0 3px;
  border-right: 1px solid var(--fa-border);
}

.fa-command-group button,
.fa-command-actions button {
  min-width: 50px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 3px;
  padding: 4px 6px;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--fa-muted);
  background: transparent;
  cursor: pointer;
}

.fa-command-group button i,
.fa-command-actions button i {
  min-width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--fa-border);
  border-radius: 4px;
  color: var(--fa-ink);
  background: var(--fa-subtle);
  font: 700 9px/1 "SFMono-Regular", Consolas, monospace;
  font-style: normal;
}

.fa-command-group button span,
.fa-command-actions button span {
  font-size: 10px;
  white-space: nowrap;
}

.fa-command-group button:hover,
.fa-command-actions button:hover,
.fa-command-group button.is-active,
.fa-command-actions button.is-active {
  color: var(--fa-accent);
  border-bottom-color: var(--fa-accent);
  background: var(--fa-accent-soft);
}

.fa-command-group button.is-accent i {
  color: #fff;
  border-color: var(--fa-accent);
  background: var(--fa-accent);
}

.fa-command-group button:disabled {
  opacity: 0.36;
  cursor: not-allowed;
}

.fa-command-group .is-supply { color: var(--fa-supply); }
.fa-command-group .is-return { color: var(--fa-return); }
.fa-command-group .is-outdoor { color: var(--fa-outdoor); }
.fa-command-group .is-exhaust { color: var(--fa-exhaust); }

.fa-command-actions {
  display: flex;
  border-left: 1px solid var(--fa-border);
}

.fa-command-actions button {
  min-width: 54px;
}

.fa-solarbar {
  position: absolute;
  z-index: 49;
  top: 58px;
  left: 0;
  right: 0;
  height: 64px;
  display: grid;
  grid-template-columns: 205px 150px minmax(280px, 1fr);
  align-items: center;
  gap: 14px;
  padding: 6px 16px 7px 14px;
  border-bottom: 1px solid var(--fa-border);
  background: var(--fa-subtle);
}

.fa-solar-copy {
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1px 8px;
}

.fa-solar-copy > span {
  font-weight: 700;
}

.fa-solar-copy > strong {
  grid-row: 1 / span 2;
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: 5px;
  color: #d37a17;
  font-size: 15px;
}

.fa-solar-copy > strong i {
  font-style: normal;
}

.fa-solar-copy > small,
.fa-solar-date span,
.fa-solar-axis-meta {
  color: var(--fa-muted);
  font-size: 9px;
}

.fa-solar-date {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 6px;
}

.fa-solar-date input {
  min-width: 0;
  height: 28px;
  padding: 0 6px;
  border: 1px solid var(--fa-border);
  color: var(--fa-ink);
  background: var(--fa-surface);
}

.fa-solar-axis {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.fa-solar-axis-meta,
.fa-solar-ticks {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.fa-solar-axis-meta b {
  color: var(--fa-ink);
  font-weight: 600;
}

.fa-daylight-track {
  --sunrise: 24%;
  --sunset: 76%;
  position: relative;
  height: 18px;
  display: grid;
  align-items: center;
  border: 1px solid var(--fa-border-strong);
  border-radius: 9px;
  background: linear-gradient(90deg,
    #10172a 0 var(--sunrise),
    #d0964c var(--sunrise),
    #eef3d4 49%,
    #e59a4f var(--sunset),
    #10172a var(--sunset) 100%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.2);
}

.fa-daylight-track input {
  width: 100%;
  height: 18px;
  margin: 0;
  opacity: 0.98;
  accent-color: #f29a2e;
  background: transparent;
  cursor: ew-resize;
}

.fa-daylight-track input::-webkit-slider-runnable-track {
  height: 16px;
  background: transparent;
}

.fa-daylight-track input::-webkit-slider-thumb {
  width: 20px;
  height: 20px;
  margin-top: -2px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #f29a2e;
  box-shadow: 0 1px 7px rgba(0,0,0,.35);
  -webkit-appearance: none;
}

.fa-solar-ticks {
  color: var(--fa-muted);
  font: 500 8px/1 "SFMono-Regular", Consolas, monospace;
}

.fa-resource-rail {
  position: absolute;
  z-index: 48;
  top: 122px;
  left: 0;
  bottom: 0;
  width: 58px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 7px 4px;
  border-right: 1px solid var(--fa-border);
  background: var(--fa-surface);
}

.fa-resource-rail > span {
  flex: 1;
}

.fa-resource-rail button {
  min-height: 54px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 4px;
  padding: 4px 2px;
  border: 0;
  border-left: 2px solid transparent;
  color: var(--fa-muted);
  background: transparent;
  cursor: pointer;
}

.fa-resource-rail button i {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 1px solid var(--fa-border-strong);
  border-radius: 50%;
  color: var(--fa-ink);
  font-size: 11px;
  font-style: normal;
}

.fa-resource-rail button span {
  font-size: 9px;
}

.fa-resource-rail button:hover,
.fa-resource-rail button.is-active {
  border-left-color: var(--fa-accent);
  color: var(--fa-accent);
  background: var(--fa-accent-soft);
}

.fa-plan-stage {
  position: absolute;
  z-index: 41;
  top: 122px;
  left: 58px;
  right: 312px;
  bottom: 0;
  overflow: hidden;
  color: #89939c;
  background: var(--fa-canvas);
}

.fa-plan-stage > header {
  position: absolute;
  z-index: 2;
  top: 12px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  color: var(--fa-muted);
  pointer-events: none;
}

.fa-plan-stage > header strong {
  color: var(--fa-ink);
}

.fa-plan-stage > header small {
  font-size: 9px;
}

#fa-plan-svg {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
  user-select: none;
}

#fa-plan-svg.is-editing {
  cursor: crosshair;
}

#fa-plan-svg.is-panning {
  cursor: grabbing;
}

#fa-plan-svg.is-dragging-device {
  cursor: move;
}

.fa-plan-grid {
  color: #fff;
}

body[data-ui-theme="dark"] .fa-plan-grid {
  color: #4d5964;
}

.fa2d-room rect {
  fill: #d2cab9;
  fill-opacity: .72;
  stroke: #5c656d;
  stroke-width: 3;
}

body[data-ui-theme="dark"] .fa2d-room rect {
  fill: #4d514f;
  stroke: #aab2b9;
}

.fa2d-room text {
  fill: var(--fa-ink);
  font-size: 13px;
  font-weight: 600;
  paint-order: stroke;
  stroke: var(--fa-surface);
  stroke-width: 3px;
}

.fa2d-room .fa2d-area,
.fa2d-room .fa2d-dimension {
  fill: var(--fa-muted);
  font-size: 10px;
  font-weight: 500;
}

.fa2d-pipe {
  fill: none;
  stroke-width: 6;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,.22));
  cursor: pointer;
}

.fa2d-pipe.is-supplyAir { stroke: var(--fa-supply); }
.fa2d-pipe.is-returnAir { stroke: var(--fa-return); }
.fa2d-pipe.is-outdoorAir { stroke: var(--fa-outdoor); }
.fa2d-pipe.is-exhaustAir { stroke: var(--fa-exhaust); }
.fa2d-pipe.is-air { stroke: var(--fa-supply); }

.fa2d-device {
  cursor: move;
}

.fa2d-device rect,
.fa2d-device circle {
  fill: var(--fa-surface);
  stroke: var(--fa-accent);
  stroke-width: 2;
}

.fa2d-device text {
  fill: var(--fa-ink);
  font: 700 10px/1 "SFMono-Regular", Consolas, monospace;
  pointer-events: none;
}

.fa2d-device.is-selected rect,
.fa2d-device.is-selected circle {
  stroke: #ef553c;
  stroke-width: 4;
}

.fa2d-port {
  fill: var(--fa-surface);
  stroke: #ef553c;
  stroke-width: 3;
  cursor: crosshair;
  pointer-events: all;
  filter: drop-shadow(0 0 5px rgba(239, 85, 60, .55));
}

.fa2d-port:hover,
.fa2d-port:focus-visible {
  fill: #ef553c;
  stroke: #ffffff;
  outline: none;
}

.fa2d-pipe-draft {
  fill: none;
  stroke: #ef553c;
  stroke-width: 4;
  stroke-dasharray: 8 6;
}

.fa-plan-north {
  position: absolute;
  top: 52px;
  left: 18px;
  display: grid;
  place-items: center;
  color: var(--fa-muted);
}

.fa-plan-north b {
  color: var(--fa-accent);
}

.fa-plan-north i {
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 24px solid var(--fa-accent);
}

.fa-plan-scale {
  position: absolute;
  left: 18px;
  bottom: 20px;
  display: grid;
  gap: 3px;
  color: var(--fa-ink);
}

.fa-plan-scale i {
  width: 90px;
  border-top: 3px solid var(--fa-accent);
}

.fa-plan-status {
  position: absolute;
  left: 50%;
  bottom: 64px;
  transform: translateX(-50%);
  max-width: calc(100% - 150px);
  padding: 7px 12px;
  border: 1px solid var(--fa-border);
  border-radius: 5px;
  color: var(--fa-muted);
  background: color-mix(in srgb, var(--fa-surface) 92%, transparent);
  box-shadow: 0 2px 10px rgba(31, 41, 51, .08);
  font-size: 10px;
  pointer-events: none;
}

.fa-side-panel {
  position: absolute;
  z-index: 48;
  top: 122px;
  right: 0;
  bottom: 0;
  width: 312px;
  display: grid;
  grid-template-rows: 196px 38px minmax(0, 1fr);
  border-left: 1px solid var(--fa-border);
  background: var(--fa-surface);
}

.fa-overview-card {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--fa-border);
  background: var(--fa-canvas);
}

.fa-overview-card header {
  position: absolute;
  z-index: 2;
  top: 8px;
  left: 10px;
  right: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.fa-overview-card header span {
  color: var(--fa-muted);
  font-size: 9px;
}

.fa-overview-card header button {
  padding: 4px 7px;
  border: 1px solid var(--fa-border-strong);
  border-radius: 3px;
  color: var(--fa-ink);
  background: var(--fa-surface);
  cursor: pointer;
  font-size: 9px;
}

#fa-overview-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.fa-overview-room {
  fill: #f3f4f2;
  stroke: #aab2b8;
  stroke-width: 1.4;
}

.fa-overview-pipe {
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
}

.fa-overview-pipe.is-supplyAir { stroke: var(--fa-supply); }
.fa-overview-pipe.is-returnAir { stroke: var(--fa-return); }
.fa-overview-pipe.is-outdoorAir { stroke: var(--fa-outdoor); }
.fa-overview-pipe.is-exhaustAir { stroke: var(--fa-exhaust); }
.fa-overview-pipe.is-air { stroke: var(--fa-supply); }

.fa-overview-floor {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 3px 7px;
  color: var(--fa-muted);
  background: color-mix(in srgb, var(--fa-surface) 85%, transparent);
  font-size: 9px;
}

.fa-side-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--fa-border);
}

.fa-side-tabs button {
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--fa-muted);
  background: var(--fa-subtle);
  cursor: pointer;
}

.fa-side-tabs button.is-active {
  color: var(--fa-accent);
  border-bottom-color: var(--fa-accent);
  background: var(--fa-surface);
}

.fa-side-scroll {
  min-height: 0;
  overflow-y: auto;
}

.fa-side-content {
  padding: 14px;
}

.fa-side-content > header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 13px;
}

.fa-side-content > header span {
  font-size: 14px;
  font-weight: 700;
}

.fa-side-content > header small {
  color: var(--fa-muted);
  font-size: 8px;
}

.fa-slider-field {
  min-height: 36px;
  display: grid;
  grid-template-columns: 88px minmax(70px, 1fr) 38px;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--fa-border);
}

.fa-slider-field input {
  accent-color: var(--fa-accent);
}

.fa-slider-field b {
  color: var(--fa-muted);
  text-align: right;
  font-size: 10px;
}

.fa-field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 13px 0;
}

.fa-field-grid label {
  position: relative;
  display: grid;
  gap: 4px;
}

.fa-field-grid label > span {
  color: var(--fa-muted);
  font-size: 9px;
}

.fa-field-grid input {
  width: 100%;
  height: 32px;
  padding: 0 36px 0 8px;
  border: 1px solid var(--fa-border);
  border-radius: 3px;
  color: var(--fa-ink);
  background: var(--fa-subtle);
}

.fa-field-grid label > small {
  position: absolute;
  right: 7px;
  bottom: 9px;
  color: var(--fa-muted);
  font-size: 8px;
}

.fa-primary-button {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--fa-accent);
  border-radius: 3px;
  color: #fff;
  background: var(--fa-accent);
  cursor: pointer;
  font-weight: 700;
}

.fa-result-card {
  margin-top: 10px;
  padding: 10px;
  border: 1px solid var(--fa-border);
  border-left: 3px solid var(--fa-muted);
  color: var(--fa-muted);
  background: var(--fa-subtle);
  font-size: 10px;
  line-height: 1.55;
}

.fa-result-card.is-success {
  border-left-color: var(--fa-supply);
  color: var(--fa-ink);
}

.fa-result-card.is-error {
  border-left-color: #d34d3f;
  color: #b14338;
}

.fa-project-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 12px 0 0;
  border: 1px solid var(--fa-border);
  background: var(--fa-border);
}

.fa-project-metrics div {
  display: grid;
  gap: 3px;
  padding: 9px;
  background: var(--fa-surface);
}

.fa-project-metrics dt {
  color: var(--fa-muted);
  font-size: 9px;
}

.fa-project-metrics dd {
  margin: 0;
  font-weight: 700;
}

.fa-audit-list {
  display: grid;
  gap: 7px;
}

.fa-audit-list p,
.fa-audit-list article {
  margin: 0;
  padding: 9px 10px;
  border: 1px solid var(--fa-border);
  color: var(--fa-muted);
  background: var(--fa-subtle);
  font-size: 10px;
  line-height: 1.5;
}

.fa-audit-list article {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3px 8px;
}

.fa-audit-list article strong {
  color: var(--fa-ink);
}

.fa-audit-list article small {
  grid-column: 1 / -1;
}

.fa-audit-list article.is-ok b { color: var(--fa-supply); }
.fa-audit-list article.is-warning b { color: #b47918; }

.fa-library-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.fa-library-grid button {
  min-height: 68px;
  display: grid;
  place-items: center;
  gap: 5px;
  border: 1px solid var(--fa-border);
  border-radius: 3px;
  color: var(--fa-muted);
  background: var(--fa-subtle);
  cursor: pointer;
}

.fa-library-grid button b {
  color: var(--fa-accent);
}

.fa-bottom-dock {
  position: absolute;
  z-index: 47;
  left: calc(50% - 127px);
  bottom: 14px;
  transform: translateX(-50%);
  height: 46px;
  display: flex;
  align-items: stretch;
  padding: 3px;
  border: 1px solid var(--fa-border-strong);
  border-radius: 7px;
  background: var(--fa-surface);
  box-shadow: 0 5px 18px rgba(31, 41, 51, .14);
}

.fa-bottom-dock > button,
.fa-view-segment button {
  min-width: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 9px;
  border: 0;
  border-radius: 4px;
  color: var(--fa-muted);
  background: transparent;
  cursor: pointer;
}

.fa-bottom-dock i {
  color: var(--fa-ink);
  font-style: normal;
}

.fa-bottom-dock button:hover,
.fa-view-segment button.is-active {
  color: var(--fa-accent);
  background: var(--fa-accent-soft);
}

.fa-view-segment {
  display: flex;
  align-items: stretch;
  padding: 2px;
  border: 1px solid var(--fa-border);
  border-radius: 5px;
  background: var(--fa-subtle);
}

.fa-view-segment button {
  min-width: 44px;
  padding: 0 10px;
  font-weight: 700;
}

.fa-dock-divider {
  width: 1px;
  margin: 5px 4px;
  background: var(--fa-border);
}

body[data-workspace-mode="freshAir"][data-workspace-view="3d"] .fa-plan-stage {
  display: none;
}

body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
  inset: 122px 312px 0 58px;
  width: calc(100% - 370px);
  height: calc(100% - 122px);
  background: var(--fa-canvas);
}

body[data-workspace-mode="freshAir"][data-workspace-view="2d"] #three-bedroom-canvas {
  visibility: hidden;
}

body[data-workspace-mode="general"] #three-bedroom-canvas {
  inset: 0;
  width: 100%;
  height: 100%;
  visibility: visible;
}

@media (max-width: 1180px) {
  .fa-commandbar {
    grid-template-columns: 190px minmax(0, 1fr) auto;
  }

  .fa-command-group button {
    min-width: 46px;
  }

  .fa-side-panel {
    width: 286px;
  }

  .fa-plan-stage {
    right: 286px;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    right: 286px;
    width: calc(100% - 344px);
  }

  .fa-bottom-dock {
    left: calc(50% - 114px);
  }
}

@media (max-width: 900px) {
  .header-theme-button,
  .demo-full-link {
    display: none;
  }

  .fa-commandbar {
    grid-template-columns: 150px minmax(0, 1fr) 100px;
  }

  .fa-brand-block {
    padding-inline: 8px;
  }

  .fa-brand-block img {
    display: none;
  }

  .fa-command-actions button {
    min-width: 44px;
    padding-inline: 3px;
  }

  .fa-solarbar {
    grid-template-columns: 175px minmax(240px, 1fr);
    gap: 9px;
  }

  .fa-solar-date {
    display: none;
  }

  .fa-side-panel {
    top: auto;
    left: 58px;
    right: 0;
    bottom: 0;
    width: auto;
    height: min(44vh, 360px);
    grid-template-columns: 210px minmax(0, 1fr);
    grid-template-rows: 38px minmax(0, 1fr);
    border-top: 1px solid var(--fa-border);
    border-left: 0;
  }

  .fa-overview-card {
    grid-row: 1 / -1;
    height: 100%;
    border-right: 1px solid var(--fa-border);
    border-bottom: 0;
  }

  .fa-side-tabs {
    grid-column: 2;
    grid-row: 1;
  }

  .fa-side-scroll {
    grid-column: 2;
    grid-row: 2;
  }

  .fa-plan-stage {
    right: 0;
    bottom: min(44vh, 360px);
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    right: 0;
    bottom: min(44vh, 360px);
    width: calc(100% - 58px);
    height: calc(100% - 122px - min(44vh, 360px));
  }

  .fa-bottom-dock {
    left: calc(50% + 29px);
    bottom: calc(min(44vh, 360px) + 12px);
  }
}

@media (max-width: 640px) {
  .demo-topbar {
    grid-template-columns: 84px minmax(0, 1fr) auto;
  }

  .header-workbench-button {
    display: none;
  }

  .fa-commandbar {
    grid-template-columns: 112px minmax(0, 1fr) 92px;
  }

  .fa-brand-block strong {
    font-size: 10px;
  }

  .fa-brand-block small {
    font-size: 8px;
  }

  .fa-command-group button {
    min-width: 44px;
  }

  .fa-command-actions button {
    min-width: 46px;
  }

  .fa-command-actions button span {
    display: none;
  }

  .fa-solarbar {
    grid-template-columns: 138px minmax(170px, 1fr);
    padding-inline: 8px;
  }

  .fa-solar-copy > span {
    font-size: 10px;
  }

  .fa-solar-copy > strong {
    font-size: 12px;
  }

  .fa-solar-axis-meta b {
    display: none;
  }

  .fa-resource-rail {
    width: 48px;
  }

  .fa-resource-rail button {
    min-height: 49px;
  }

  .fa-resource-rail button i {
    width: 25px;
    height: 25px;
  }

  .fa-plan-stage {
    left: 48px;
    bottom: 270px;
  }

  .fa-side-panel {
    left: 48px;
    height: 270px;
    grid-template-columns: 1fr;
    grid-template-rows: 38px minmax(0, 1fr);
  }

  .fa-overview-card {
    display: none;
  }

  .fa-side-tabs,
  .fa-side-scroll {
    grid-column: 1;
  }

  .fa-field-grid {
    grid-template-columns: repeat(2, minmax(110px, 1fr));
  }

  .fa-bottom-dock {
    left: calc(50% + 24px);
    bottom: 278px;
    max-width: calc(100vw - 62px);
    overflow-x: auto;
  }

  .fa-bottom-dock > button {
    min-width: 48px;
  }

  .fa-bottom-dock > button span {
    display: none;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    left: 48px;
    bottom: 270px;
    width: calc(100% - 48px);
    height: calc(100% - 392px);
  }
}

@media (max-width: 430px) {
  .fa-commandbar {
    grid-template-columns: 94px minmax(0, 1fr) 84px;
  }

  .fa-brand-block {
    padding-inline: 6px;
  }

  .fa-command-actions button {
    min-width: 40px;
  }

  .fa-solarbar {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 6px;
  }

  .fa-solar-copy > small,
  .fa-sunrise-label,
  .fa-sunset-label,
  .fa-solar-ticks span:nth-child(even) {
    display: none;
  }

  .fa-side-content {
    padding: 10px;
  }

  .fa-project-metrics {
    display: none;
  }
}

/* 91COST fresh-air workstation visual polish.
   Append after the existing fresh-air styles so these rules stay low-risk and reversible. */

.fresh-air-workbench {
  --fa-bg: #edf1f4;
  --fa-canvas: #e7ecef;
  --fa-surface: #ffffff;
  --fa-subtle: #f6f8fa;
  --fa-border: rgba(42, 58, 72, 0.11);
  --fa-border-strong: rgba(42, 58, 72, 0.2);
  --fa-ink: #1e2a34;
  --fa-muted: #667582;
  --fa-accent: #0f7ea8;
  --fa-accent-strong: #086b91;
  --fa-accent-soft: #e8f4f8;
  --fa-supply: #0b9f72;
  --fa-return: #e98228;
  --fa-outdoor: #189bc8;
  --fa-exhaust: #7c68c8;
  --fa-shadow-soft: 0 1px 2px rgba(24, 38, 50, 0.04), 0 10px 30px rgba(24, 38, 50, 0.07);
  --fa-shadow-float: 0 10px 30px rgba(25, 39, 51, 0.13), 0 2px 6px rgba(25, 39, 51, 0.08);
  background: var(--fa-bg);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-feature-settings: "tnum" 1;
}

body[data-ui-theme="dark"] .fresh-air-workbench {
  --fa-bg: #11171c;
  --fa-canvas: #171e24;
  --fa-surface: #20282f;
  --fa-subtle: #1a2229;
  --fa-border: rgba(214, 229, 239, 0.1);
  --fa-border-strong: rgba(214, 229, 239, 0.2);
  --fa-ink: #e8eef2;
  --fa-muted: #98a6b1;
  --fa-accent: #45b5d8;
  --fa-accent-strong: #6dc9e4;
  --fa-accent-soft: rgba(69, 181, 216, 0.13);
  --fa-shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.18), 0 12px 34px rgba(0, 0, 0, 0.2);
  --fa-shadow-float: 0 14px 34px rgba(0, 0, 0, 0.35), 0 2px 8px rgba(0, 0, 0, 0.24);
}

.fresh-air-workbench button,
.fresh-air-workbench input {
  font: inherit;
}

.fresh-air-workbench button {
  transition: color 150ms ease, background-color 150ms ease, border-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.fresh-air-workbench button:focus-visible,
.fresh-air-workbench input:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--fa-accent) 74%, white);
  outline-offset: 2px;
}

.fa-commandbar {
  box-shadow: 0 1px 0 rgba(22, 34, 44, 0.04), 0 8px 24px rgba(22, 34, 44, 0.05);
}

.fa-brand-block {
  position: relative;
  gap: 11px;
  padding-inline: 16px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--fa-accent-soft) 52%, var(--fa-surface)), var(--fa-surface) 72%);
}

.fa-brand-block::after {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(var(--fa-accent), var(--fa-supply));
}

.fa-brand-block img {
  width: 32px;
  height: 32px;
  padding: 5px;
  border-radius: 10px;
  background: var(--fa-surface);
  box-shadow: 0 5px 14px rgba(15, 126, 168, 0.14), inset 0 0 0 1px var(--fa-border);
}

.fa-brand-block strong {
  color: var(--fa-ink);
  font-size: 13px;
  letter-spacing: 0;
}

.fa-brand-block small {
  font-size: 9px;
}

.fa-command-scroll {
  align-items: stretch;
  padding-inline: 4px;
  scroll-snap-type: x proximity;
}

.fa-command-group {
  align-items: center;
  padding: 4px 4px;
  border-right-color: color-mix(in srgb, var(--fa-border) 70%, transparent);
}

.fa-command-group button,
.fa-command-actions button {
  min-width: 52px;
  height: 48px;
  align-content: center;
  gap: 3px;
  padding: 3px 7px;
  border: 0;
  border-radius: 9px;
  scroll-snap-align: start;
}

.fa-command-group button i,
.fa-command-actions button i {
  min-width: 26px;
  height: 25px;
  border: 0;
  border-radius: 8px;
  color: #42515d;
  background: transparent;
  font-size: 10px;
  letter-spacing: -0.02em;
}

body[data-ui-theme="dark"] .fa-command-group button i,
body[data-ui-theme="dark"] .fa-command-actions button i {
  color: var(--fa-ink);
}

.fa-command-group button span,
.fa-command-actions button span {
  color: currentColor;
  font-size: 9px;
  line-height: 1;
}

.fa-command-group button:hover,
.fa-command-actions button:hover,
.fa-command-group button.is-active,
.fa-command-actions button.is-active {
  border-bottom-color: transparent;
  color: var(--fa-accent-strong);
  background: var(--fa-accent-soft);
}

.fa-command-group button:hover i,
.fa-command-actions button:hover i,
.fa-command-group button.is-active i,
.fa-command-actions button.is-active i {
  color: var(--fa-accent-strong);
  background: color-mix(in srgb, var(--fa-surface) 72%, transparent);
}

.fa-command-group button.is-accent {
  margin-inline: 2px;
  color: var(--fa-accent-strong);
  background: var(--fa-accent-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--fa-accent) 16%, transparent);
}

.fa-command-group button.is-accent i {
  border: 0;
  border-radius: 8px;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
  box-shadow: 0 5px 12px color-mix(in srgb, var(--fa-accent) 24%, transparent);
}

.fa-command-group button:disabled {
  opacity: 0.3;
  filter: saturate(0);
}

.fa-command-actions {
  align-items: center;
  gap: 1px;
  padding: 4px 5px;
  border-left-color: var(--fa-border);
}

.fa-command-actions button:last-child:hover {
  color: #b84b42;
  background: color-mix(in srgb, #df6257 11%, var(--fa-surface));
}

.fa-solarbar {
  gap: 18px;
  padding: 7px 18px 8px 16px;
  background: color-mix(in srgb, var(--fa-surface) 86%, var(--fa-subtle));
  box-shadow: 0 7px 22px rgba(35, 49, 60, 0.035);
}

.fa-solar-copy > span {
  font-size: 11px;
  letter-spacing: 0.01em;
}

.fa-solar-copy > strong {
  padding: 4px 8px;
  border-radius: 999px;
  color: #b66510;
  background: #fff4df;
  font-size: 13px;
}

body[data-workspace-mode="freshAir"] {
  --fa-canvas: #e9ebee;
  --fa-border: rgba(60, 60, 67, 0.12);
  --fa-shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.035), 0 12px 34px rgba(31, 35, 40, 0.075);
}

body[data-ui-theme="dark"] .fa-solar-copy > strong {
  color: #ffc46f;
  background: rgba(234, 151, 42, 0.13);
}

.fa-solar-copy > small,
.fa-solar-date span,
.fa-solar-axis-meta {
  font-size: 8px;
}

.fa-solar-date {
  gap: 7px;
}

.fa-solar-date input {
  height: 30px;
  padding-inline: 9px;
  border-color: var(--fa-border);
  border-radius: 8px;
  background: var(--fa-subtle);
}

.fa-solar-axis {
  gap: 4px;
}

.fa-daylight-track {
  height: 10px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(90deg,
    #1c2942 0 var(--sunrise),
    #d99a47 var(--sunrise),
    #f6df97 49%,
    #e8a04e var(--sunset),
    #1c2942 var(--sunset) 100%);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(255, 255, 255, 0.65);
}

.fa-daylight-track input {
  height: 18px;
  margin-top: -4px;
  -webkit-appearance: none;
  appearance: none;
}

.fa-daylight-track input::-webkit-slider-runnable-track {
  height: 10px;
}

.fa-daylight-track input::-webkit-slider-thumb {
  width: 18px;
  height: 18px;
  margin-top: -4px;
  border: 3px solid var(--fa-surface);
  background: #f3a434;
  box-shadow: 0 2px 8px rgba(119, 72, 13, 0.34);
}

.fa-resource-rail {
  gap: 4px;
  padding: 9px 6px;
  background: color-mix(in srgb, var(--fa-surface) 96%, var(--fa-subtle));
  box-shadow: 7px 0 24px rgba(29, 42, 52, 0.035);
}

.fa-resource-rail button {
  min-height: 53px;
  gap: 4px;
  border: 0;
  border-radius: 10px;
}

.fa-resource-rail button i {
  width: 29px;
  height: 29px;
  border: 0;
  border-radius: 9px;
  color: #53616c;
  background: var(--fa-subtle);
  box-shadow: inset 0 0 0 1px var(--fa-border);
  font-size: 10px;
  font-weight: 700;
}

.fa-resource-rail button span {
  font-size: 8px;
}

.fa-resource-rail button:hover,
.fa-resource-rail button.is-active {
  border-left-color: transparent;
  color: var(--fa-accent-strong);
  background: var(--fa-accent-soft);
}

.fa-resource-rail button:hover i,
.fa-resource-rail button.is-active i {
  color: #fff;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
  box-shadow: 0 5px 12px color-mix(in srgb, var(--fa-accent) 22%, transparent);
}

.fa-plan-stage {
  background:
    radial-gradient(circle at 52% 46%, color-mix(in srgb, var(--fa-surface) 25%, transparent), transparent 44%),
    var(--fa-canvas);
}

.fa-plan-stage > header {
  top: 14px;
  left: 18px;
  right: 18px;
  align-items: center;
}

.fa-plan-stage > header > span,
.fa-plan-stage > header > small {
  padding: 7px 10px;
  border: 1px solid var(--fa-border);
  border-radius: 9px;
  background: color-mix(in srgb, var(--fa-surface) 90%, transparent);
  box-shadow: 0 3px 12px rgba(30, 44, 55, 0.06);
  backdrop-filter: blur(10px);
}

.fa-plan-stage > header > span {
  color: var(--fa-muted);
  font-size: 10px;
}

.fa-plan-grid {
  color: #b7c2ca;
  opacity: 0.68;
}

body[data-ui-theme="dark"] .fa-plan-grid {
  color: #52606a;
  opacity: 0.6;
}

.fa2d-room rect {
  fill: #f7f8f7;
  fill-opacity: 0.98;
  stroke: #5b6670;
  stroke-width: 2.5;
  filter: drop-shadow(0 3px 4px rgba(42, 53, 61, 0.12));
}

.fa2d-room.is-living rect { fill: #edf5f7; }
.fa2d-room.is-dining rect { fill: #f5f1e8; }
.fa2d-room.is-bedroom rect { fill: #f1f3f5; }
.fa2d-room.is-kitchen rect { fill: #edf5f0; }
.fa2d-room.is-bathroom rect { fill: #eaf3f4; }

body[data-ui-theme="dark"] .fa2d-room rect {
  fill: #2a333a;
  stroke: #9aa7b1;
  filter: drop-shadow(0 4px 5px rgba(0, 0, 0, 0.3));
}

body[data-ui-theme="dark"] .fa2d-room.is-living rect { fill: #26373d; }
body[data-ui-theme="dark"] .fa2d-room.is-dining rect { fill: #38342d; }
body[data-ui-theme="dark"] .fa2d-room.is-bedroom rect { fill: #2d333a; }
body[data-ui-theme="dark"] .fa2d-room.is-kitchen rect { fill: #283830; }
body[data-ui-theme="dark"] .fa2d-room.is-bathroom rect { fill: #27383c; }

.fa2d-room text {
  fill: #25323b;
  font-size: 12px;
  font-weight: 650;
  stroke: rgba(255, 255, 255, 0.92);
  stroke-width: 4px;
}

body[data-ui-theme="dark"] .fa2d-room text {
  fill: var(--fa-ink);
  stroke: rgba(25, 32, 38, 0.92);
}

.fa2d-room .fa2d-area {
  fill: #5d6b75;
  font-size: 9px;
}

.fa2d-room .fa2d-dimension {
  fill: #74818b;
  font-size: 9px;
  font-variant-numeric: tabular-nums;
}

.fa2d-pipe {
  stroke-width: 5;
  filter: drop-shadow(0 0 2px rgba(255, 255, 255, 0.95)) drop-shadow(0 2px 2px rgba(27, 38, 46, 0.2));
}

body[data-ui-theme="dark"] .fa2d-pipe {
  filter: drop-shadow(0 0 2px rgba(17, 24, 29, 0.9)) drop-shadow(0 2px 3px rgba(0, 0, 0, 0.35));
}

.fa2d-device rect,
.fa2d-device circle {
  fill: var(--fa-surface);
  stroke-width: 2.25;
  filter: drop-shadow(0 3px 4px rgba(28, 45, 57, 0.17));
}

.fa2d-device rect {
  rx: 6px;
}

.fa2d-device.is-selected rect,
.fa2d-device.is-selected circle {
  stroke: #e85c4a;
  stroke-width: 3;
  filter: drop-shadow(0 0 5px rgba(232, 92, 74, 0.35));
}

.fa2d-device .fa2d-boiler-screen {
  fill: #172932;
  stroke: #68ddf7;
  stroke-width: 1.25;
}

.fa2d-device .fa2d-boiler-knob {
  fill: #f28d42;
  stroke: #ffffff;
  stroke-width: 1.2;
}

.fa2d-device .fa2d-device-label {
  fill: var(--fa-ink);
  font: 700 10px/1 -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
  paint-order: stroke;
  stroke: var(--fa-surface);
  stroke-width: 3px;
}

.fa2d-manifold-hot,
.fa2d-manifold-cold,
.fa2d-manifold-port {
  fill: none;
  stroke-linecap: round;
  pointer-events: none;
}

.fa2d-manifold-hot {
  stroke: #ef553c;
  stroke-width: 3;
}

.fa2d-manifold-cold {
  stroke: #3184d6;
  stroke-width: 3;
}

.fa2d-manifold-port {
  stroke: #b17b45;
  stroke-width: 2;
}

.fa-plan-north {
  top: 58px;
  left: 18px;
  width: 38px;
  min-height: 58px;
  padding: 6px 4px;
  border: 1px solid var(--fa-border);
  border-radius: 19px;
  background: color-mix(in srgb, var(--fa-surface) 88%, transparent);
  box-shadow: 0 4px 14px rgba(28, 42, 52, 0.07);
  backdrop-filter: blur(8px);
}

.fa-plan-north i {
  border-left-width: 5px;
  border-right-width: 5px;
  border-bottom-width: 18px;
}

.fa-plan-north span {
  font-size: 8px;
}

.fa-plan-scale {
  left: 20px;
  bottom: 20px;
  padding: 6px 9px;
  border: 1px solid var(--fa-border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--fa-surface) 88%, transparent);
  font-size: 9px;
  backdrop-filter: blur(8px);
}

.fa-plan-scale i {
  width: 74px;
  border-top-width: 2px;
}

.fa-plan-status {
  bottom: 68px;
  padding: 7px 13px;
  border-color: var(--fa-border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--fa-surface) 90%, transparent);
  box-shadow: 0 6px 20px rgba(27, 41, 52, 0.1);
  backdrop-filter: blur(12px);
}

.fa-side-panel {
  grid-template-rows: 206px 46px minmax(0, 1fr);
  background: color-mix(in srgb, var(--fa-subtle) 80%, var(--fa-surface));
  box-shadow: -10px 0 30px rgba(30, 44, 55, 0.04);
}

.fa-overview-card {
  margin: 10px 10px 0;
  border: 1px solid var(--fa-border);
  border-radius: 12px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.54), rgba(255, 255, 255, 0.18)),
    var(--fa-canvas);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

body[data-ui-theme="dark"] .fa-overview-card {
  background: var(--fa-canvas);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.fa-overview-card header {
  top: 10px;
  left: 12px;
  right: 12px;
}

.fa-overview-card header span {
  font-weight: 650;
  letter-spacing: 0.04em;
}

.fa-overview-card header button {
  padding: 5px 9px;
  border-color: var(--fa-border);
  border-radius: 7px;
  color: var(--fa-accent-strong);
  background: color-mix(in srgb, var(--fa-surface) 88%, transparent);
  box-shadow: 0 2px 7px rgba(31, 47, 59, 0.07);
}

.fa-overview-card header button:hover {
  color: #fff;
  border-color: var(--fa-accent);
  background: var(--fa-accent);
}

.fa-overview-room {
  fill: color-mix(in srgb, var(--fa-surface) 82%, #dce8e9);
  stroke: color-mix(in srgb, var(--fa-ink) 40%, transparent);
}

.fa-overview-floor {
  right: 10px;
  bottom: 10px;
  padding: 4px 8px;
  border: 1px solid var(--fa-border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--fa-surface) 86%, transparent);
}

.fa-side-tabs {
  align-self: center;
  height: 36px;
  margin: 7px 10px 3px;
  padding: 3px;
  gap: 2px;
  border: 0;
  border-radius: 10px;
  background: color-mix(in srgb, var(--fa-border) 52%, transparent);
}

.fa-side-tabs button {
  min-width: 0;
  border: 0;
  border-radius: 7px;
  background: transparent;
  font-size: 10px;
  font-weight: 600;
}

.fa-side-tabs button.is-active {
  border-bottom-color: transparent;
  color: var(--fa-accent-strong);
  background: var(--fa-surface);
  box-shadow: 0 1px 4px rgba(28, 42, 52, 0.09);
}

.fa-side-scroll {
  scrollbar-color: color-mix(in srgb, var(--fa-muted) 36%, transparent) transparent;
  scrollbar-width: thin;
}

.fa-side-scroll::-webkit-scrollbar {
  width: 6px;
}

.fa-side-scroll::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: color-mix(in srgb, var(--fa-muted) 28%, transparent);
}

.fa-side-content {
  padding: 14px 16px 22px;
}

.fa-side-content > header {
  align-items: center;
  margin-bottom: 12px;
}

.fa-side-content > header span {
  font-size: 13px;
  letter-spacing: -0.01em;
}

.fa-side-content > header small {
  max-width: 46%;
  overflow: hidden;
  color: color-mix(in srgb, var(--fa-muted) 76%, transparent);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fa-slider-field {
  min-height: 40px;
  grid-template-columns: 82px minmax(70px, 1fr) 34px;
  border-bottom-color: var(--fa-border);
}

.fa-slider-field > span {
  color: var(--fa-ink);
  font-size: 10px;
}

.fa-slider-field input {
  accent-color: var(--fa-accent);
}

.fa-field-grid {
  grid-template-columns: 1fr;
  gap: 0;
  margin: 12px 0;
  padding: 3px 10px;
  border: 1px solid var(--fa-border);
  border-radius: 10px;
  background: var(--fa-surface);
}

.fa-field-grid label {
  position: relative;
  min-height: 39px;
  grid-template-columns: 82px minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--fa-border);
}

.fa-field-grid label:last-child {
  border-bottom: 0;
}

.fa-field-grid label > span {
  color: var(--fa-muted);
  font-size: 9px;
}

.fa-field-grid input {
  height: 30px;
  padding: 0;
  border: 0;
  border-radius: 6px;
  color: var(--fa-ink);
  background: transparent;
  text-align: right;
  font-size: 11px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.fa-field-grid input:focus-visible {
  padding-inline: 6px;
  background: var(--fa-accent-soft);
}

.fa-field-grid label > small {
  position: static;
  min-width: 25px;
  color: var(--fa-muted);
  text-align: right;
}

.fa-primary-button {
  min-height: 40px;
  border: 0;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--fa-accent), var(--fa-accent-strong));
  box-shadow: 0 7px 16px color-mix(in srgb, var(--fa-accent) 24%, transparent);
  letter-spacing: 0.02em;
}

.fa-primary-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 9px 20px color-mix(in srgb, var(--fa-accent) 30%, transparent);
}

.fa-result-card {
  margin-top: 11px;
  padding: 10px 11px;
  border-color: var(--fa-border);
  border-left-width: 2px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--fa-surface) 64%, transparent);
}

.fa-project-metrics {
  gap: 7px;
  margin-top: 10px;
  border: 0;
  background: transparent;
}

.fa-project-metrics div {
  gap: 4px;
  padding: 9px 10px;
  border: 1px solid var(--fa-border);
  border-radius: 9px;
  background: color-mix(in srgb, var(--fa-surface) 78%, transparent);
}

.fa-project-metrics dd {
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.fa-audit-list {
  gap: 8px;
}

.fa-audit-list p,
.fa-audit-list article {
  border-color: var(--fa-border);
  border-radius: 9px;
  background: var(--fa-surface);
}

.fa-library-grid {
  gap: 8px;
}

.fa-library-grid button {
  min-height: 72px;
  border-color: var(--fa-border);
  border-radius: 10px;
  background: var(--fa-surface);
}

.fa-library-grid button:hover {
  color: var(--fa-accent-strong);
  border-color: color-mix(in srgb, var(--fa-accent) 38%, var(--fa-border));
  background: var(--fa-accent-soft);
  transform: translateY(-1px);
}

.fa-bottom-dock {
  height: 48px;
  padding: 4px;
  border-color: color-mix(in srgb, var(--fa-border-strong) 72%, transparent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--fa-surface) 90%, transparent);
  box-shadow: var(--fa-shadow-float);
  backdrop-filter: blur(18px) saturate(1.2);
}

.fa-bottom-dock > button,
.fa-view-segment button {
  min-width: 58px;
  border-radius: 9px;
  font-size: 10px;
}

.fa-bottom-dock i {
  font-size: 14px;
}

.fa-bottom-dock button:hover {
  color: var(--fa-accent-strong);
  background: var(--fa-accent-soft);
}

.fa-view-segment {
  padding: 2px;
  border: 0;
  border-radius: 10px;
  background: color-mix(in srgb, var(--fa-border) 62%, transparent);
}

.fa-view-segment button {
  min-width: 42px;
  padding-inline: 9px;
}

.fa-view-segment button.is-active {
  color: var(--fa-accent-strong);
  background: var(--fa-surface);
  box-shadow: 0 1px 5px rgba(27, 40, 50, 0.11);
}

@media (max-width: 1180px) {
  .fa-commandbar {
    grid-template-columns: 184px minmax(0, 1fr) auto;
  }

  .fa-command-group button {
    min-width: 48px;
    padding-inline: 5px;
  }
}

@media (max-width: 900px) {
  .fa-commandbar {
    grid-template-columns: 148px minmax(0, 1fr) 100px;
  }

  .fa-brand-block {
    padding-inline: 11px;
  }

  .fa-side-panel {
    grid-template-rows: 40px minmax(0, 1fr);
    background: var(--fa-subtle);
    box-shadow: 0 -10px 28px rgba(28, 42, 53, 0.06);
  }

  .fa-overview-card {
    margin: 10px 0 10px 10px;
  }

  .fa-side-tabs {
    margin: 6px 10px 0;
  }

  .fa-side-content {
    padding-top: 10px;
  }
}

@media (max-width: 640px) {
  .fa-commandbar {
    grid-template-columns: 112px minmax(0, 1fr) 92px;
  }

  .fa-brand-block {
    padding-inline: 9px;
  }

  .fa-brand-block strong {
    font-size: 11px;
  }

  .fa-command-group {
    padding-inline: 2px;
  }

  .fa-command-group button {
    min-width: 43px;
    padding-inline: 3px;
  }

  .fa-command-group button i,
  .fa-command-actions button i {
    min-width: 24px;
    height: 24px;
  }

  .fa-solarbar {
    grid-template-columns: 132px minmax(170px, 1fr);
    gap: 10px;
    padding-inline: 10px;
  }

  .fa-solar-copy > strong {
    padding-inline: 6px;
  }

  .fa-resource-rail {
    padding-inline: 4px;
  }

  .fa-resource-rail button {
    min-height: 48px;
  }

  .fa-plan-stage {
    bottom: 258px;
  }

  .fa-side-panel {
    height: 258px;
  }

  .fa-field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 14px;
  }

  .fa-field-grid label:nth-last-child(2) {
    border-bottom: 0;
  }

  .fa-bottom-dock {
    bottom: 267px;
    height: 44px;
    border-radius: 12px;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    bottom: 258px;
    height: calc(100% - 380px);
  }
}

@media (max-width: 430px) {
  .fa-commandbar {
    grid-template-columns: 74px minmax(0, 1fr) 80px;
  }

  .fa-brand-block {
    padding-inline: 8px 5px;
  }

  .fa-brand-block strong {
    font-size: 10px;
  }

  .fa-brand-block small {
    display: none;
  }

  .fa-command-actions {
    padding-inline: 2px;
  }

  .fa-command-actions button {
    min-width: 38px;
  }

  .fa-solarbar {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 8px;
    padding-inline: 8px;
  }

  .fa-solar-copy {
    display: flex;
  }

  .fa-solar-copy > span,
  .fa-solar-copy > small {
    display: none;
  }

  .fa-solar-copy > strong {
    width: 100%;
    justify-content: center;
  }

  .fa-solar-axis-meta {
    min-height: 10px;
  }

  .fa-plan-stage > header > small {
    display: none;
  }

  .fa-plan-stage > header > span {
    padding: 6px 8px;
  }

  .fa-plan-status {
    max-width: calc(100% - 84px);
    overflow: hidden;
    padding-inline: 10px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .fa-side-content {
    padding: 10px 12px 18px;
  }

  .fa-side-content > header small {
    display: none;
  }

  .fa-field-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .fa-field-grid label:nth-last-child(2) {
    border-bottom: 1px solid var(--fa-border);
  }

  .fa-bottom-dock {
    scrollbar-width: none;
  }

  .fa-bottom-dock::-webkit-scrollbar {
    display: none;
  }
}

@media (hover: hover) {
  .fa-command-group button:hover,
  .fa-command-actions button:hover,
  .fa-resource-rail button:hover,
  .fa-bottom-dock button:hover {
    transform: translateY(-1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .fresh-air-workbench *,
  .fresh-air-workbench *::before,
  .fresh-air-workbench *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Interaction safety and compact-height workstation layout. */
.demo-toast {
  pointer-events: none;
}

/* The Three.js canvas sits behind the workstation chrome in 3D mode. */
.fresh-air-workbench {
  background: transparent;
}

.fa-bottom-dock > button:disabled {
  color: var(--fa-muted);
  opacity: 0.72;
  cursor: default;
}

.fa-bottom-dock > button:disabled:hover {
  color: var(--fa-muted);
  background: transparent;
  transform: none;
}

@media (max-width: 900px) {
  .fa-command-scroll {
    scrollbar-color: color-mix(in srgb, var(--fa-accent) 30%, transparent) transparent;
    scrollbar-width: thin;
  }

  .fa-command-scroll::-webkit-scrollbar {
    display: block;
    height: 3px;
  }

  .fa-command-scroll::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: color-mix(in srgb, var(--fa-accent) 28%, transparent);
  }
}

@media (max-height: 560px) and (min-width: 641px) {
  html,
  body,
  .demo-shell {
    height: 100%;
    min-height: 0;
  }

  .fa-commandbar {
    height: 52px;
  }

  .fa-command-group button,
  .fa-command-actions button {
    height: 44px;
  }

  .fa-solarbar {
    top: 52px;
    height: 50px;
    padding-block: 4px;
  }

  .fa-resource-rail {
    top: 102px;
  }

  .fa-plan-stage {
    top: 102px;
    right: 270px;
    bottom: 0;
  }

  .fa-side-panel {
    top: 102px;
    right: 0;
    bottom: 0;
    left: auto;
    width: 270px;
    height: auto;
    grid-template-columns: 1fr;
    grid-template-rows: 120px 36px minmax(0, 1fr);
    border-top: 0;
    border-left: 1px solid var(--fa-border);
  }

  .fa-overview-card {
    display: block;
    grid-row: 1;
    height: auto;
    margin: 6px 6px 0;
    border-right: 1px solid var(--fa-border);
    border-bottom: 1px solid var(--fa-border);
  }

  .fa-side-tabs {
    grid-column: 1;
    grid-row: 2;
    margin: 3px 6px 0;
  }

  .fa-side-scroll {
    grid-column: 1;
    grid-row: 3;
  }

  .fa-side-content {
    padding: 8px 10px 12px;
  }

  .fa-side-content > header,
  .fa-field-grid {
    margin-block: 6px;
  }

  .fa-project-metrics {
    display: none;
  }

  .fa-bottom-dock {
    left: calc(50% - 106px);
    bottom: 8px;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    top: 102px;
    right: 270px;
    bottom: 0;
    left: 58px;
    width: calc(100% - 328px);
    height: calc(100% - 102px);
  }
}

@media (max-height: 560px) and (max-width: 640px) {
  html,
  body,
  .demo-shell {
    height: 100%;
    min-height: 0;
  }

  .fa-commandbar {
    height: 50px;
  }

  .fa-command-group button,
  .fa-command-actions button {
    height: 42px;
  }

  .fa-solarbar {
    top: 50px;
    height: 44px;
    padding-block: 3px;
  }

  .fa-resource-rail {
    top: 94px;
    width: 44px;
  }

  .fa-resource-rail button {
    min-height: 42px;
  }

  .fa-plan-stage {
    top: 94px;
    left: 44px;
    right: 200px;
    bottom: 0;
  }

  .fa-side-panel {
    top: 94px;
    right: 0;
    bottom: 0;
    left: auto;
    width: 200px;
    height: auto;
    grid-template-columns: 1fr;
    grid-template-rows: 36px minmax(0, 1fr);
    border-top: 0;
    border-left: 1px solid var(--fa-border);
  }

  .fa-overview-card {
    display: none;
  }

  .fa-side-tabs {
    grid-column: 1;
    grid-row: 1;
    margin: 2px 4px 0;
  }

  .fa-side-scroll {
    grid-column: 1;
    grid-row: 2;
  }

  .fa-side-content {
    padding: 7px 8px 10px;
  }

  .fa-plan-stage > header > small,
  .fa-side-content > header small,
  .fa-project-metrics {
    display: none;
  }

  .fa-bottom-dock {
    left: calc(50% - 78px);
    bottom: 7px;
    max-width: calc(100vw - 264px);
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    top: 94px;
    right: 200px;
    bottom: 0;
    left: 44px;
    width: calc(100% - 244px);
    height: calc(100% - 94px);
  }
}

/* Company engineering modules: one project model shared by floor heating,
   fresh air and air conditioning. */
body[data-engineering-module="floorHeating"] .fresh-air-workbench {
  --fa-accent: #b66a26;
  --fa-accent-strong: #95501a;
  --fa-accent-soft: #fbefe3;
}

body[data-ui-theme="dark"][data-engineering-module="floorHeating"] .fresh-air-workbench {
  --fa-accent: #e09a51;
  --fa-accent-strong: #f1b874;
  --fa-accent-soft: rgba(224, 154, 81, 0.14);
}

body[data-engineering-module="freshAir"] .fresh-air-workbench {
  --fa-accent: #11856d;
  --fa-accent-strong: #086d59;
  --fa-accent-soft: #e7f5f1;
}

body[data-ui-theme="dark"][data-engineering-module="freshAir"] .fresh-air-workbench {
  --fa-accent: #45c4a5;
  --fa-accent-strong: #75d9c0;
  --fa-accent-soft: rgba(69, 196, 165, 0.13);
}

body[data-engineering-module="airConditioning"] .fresh-air-workbench {
  --fa-accent: #2678ba;
  --fa-accent-strong: #145f9b;
  --fa-accent-soft: #e9f2fa;
}

body[data-ui-theme="dark"][data-engineering-module="airConditioning"] .fresh-air-workbench {
  --fa-accent: #58a7e3;
  --fa-accent-strong: #80bff0;
  --fa-accent-soft: rgba(88, 167, 227, 0.14);
}

.engineering-module-switcher {
  position: absolute;
  z-index: 64;
  top: 132px;
  left: calc(50% - 118px);
  width: min(456px, calc(100vw - 470px));
  min-width: 360px;
  display: grid;
  grid-template-columns: 1.25fr 0.8fr 1fr;
  gap: 3px;
  padding: 4px;
  transform: translateX(-50%);
  border: 1px solid var(--fa-border-strong);
  border-radius: 14px;
  background: color-mix(in srgb, var(--fa-surface) 92%, transparent);
  box-shadow: var(--fa-shadow-float);
  backdrop-filter: blur(18px) saturate(1.15);
  pointer-events: auto;
}

.engineering-module-switcher button {
  min-width: 0;
  height: 42px;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: center;
  gap: 7px;
  padding: 4px 8px;
  border: 0;
  border-radius: 10px;
  color: var(--fa-muted);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.engineering-module-switcher button > i {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--fa-border);
  border-radius: 8px;
  color: var(--fa-muted);
  background: var(--fa-subtle);
  font: 700 9px/1 "SFMono-Regular", Consolas, monospace;
}

.engineering-module-switcher button > span {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.engineering-module-switcher strong,
.engineering-module-switcher small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.engineering-module-switcher strong {
  color: currentColor;
  font-size: 10px;
}

.engineering-module-switcher small {
  color: var(--fa-muted);
  font-size: 8px;
}

.engineering-module-switcher button:hover,
.engineering-module-switcher button.is-active {
  color: var(--fa-accent-strong);
  background: var(--fa-accent-soft);
}

.engineering-module-switcher button.is-active > i {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
  box-shadow: 0 4px 10px color-mix(in srgb, var(--fa-accent) 25%, transparent);
}

.fa-command-group [data-pipe-tool] .is-hot {
  color: #e14d3d;
}

.fa-command-group [data-pipe-tool] .is-cold {
  color: #2e8fd2;
}

.fa2d-pipe.is-hot,
.fa-overview-pipe.is-hot {
  stroke: #e34f3f;
}

.fa2d-pipe.is-cold,
.fa-overview-pipe.is-cold {
  stroke: #278bd2;
}

.fa2d-pipe.is-floor-coil {
  stroke: #ff704a;
  filter: drop-shadow(0 0 3px color-mix(in srgb, #ff704a 45%, transparent));
}

.fa2d-circuit-number {
  fill: #b83c25;
  font-size: 10px;
  font-weight: 800;
  pointer-events: none;
  paint-order: stroke;
  stroke: var(--fa-surface);
  stroke-width: 3px;
}

.fa2d-circuit-node {
  fill: #fff;
  stroke: #ff5d36;
  stroke-width: 2px;
  cursor: move;
  vector-effect: non-scaling-stroke;
}

.fa2d-circuit-node:hover,
.fa2d-circuit-node:focus {
  fill: #ff5d36;
  outline: none;
  filter: drop-shadow(0 0 4px rgba(255, 93, 54, .65));
}

.fa2d-heating-zone-draft {
  fill: color-mix(in srgb, #ff704a 16%, transparent);
  stroke: #ff704a;
  stroke-width: 2;
  stroke-dasharray: 8 5;
}

.fa2d-heating-zone-draft-label {
  fill: #c1492c;
  font-size: 11px;
  font-weight: 700;
  paint-order: stroke;
  stroke: var(--fa-surface);
  stroke-width: 3px;
}

.fa-module-engineering-summary {
  display: grid;
  gap: 9px;
  margin-top: 12px;
}

.fa-module-state {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid color-mix(in srgb, #d08a35 32%, var(--fa-border));
  border-radius: 9px;
  color: #9b5d18;
  background: color-mix(in srgb, #fff2db 72%, var(--fa-surface));
}

body[data-ui-theme="dark"] .fa-module-state {
  color: #edba77;
  background: rgba(208, 138, 53, 0.12);
}

.fa-module-state span,
.fa-module-state b {
  font-size: 10px;
}

.fa-module-state span.is-ok {
  color: #168262;
}

.fa-module-engineering-summary > p {
  margin: 0;
  color: var(--fa-muted);
  font-size: 9px;
  line-height: 1.65;
}

.fa-fresh-air-controls {
  display: block;
}

.home-engineering-launcher {
  padding: 20px 30px 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 33, 39, 0.92), rgba(5, 20, 24, 0.94));
}

.home-engineering-launcher > header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.home-engineering-launcher > header span {
  color: var(--cyan);
  font: 600 8px/1 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.13em;
}

.home-engineering-launcher > header strong {
  color: #e8f4f2;
  font-size: 13px;
}

.home-engineering-launcher > header small,
.home-engineering-launcher > footer {
  color: #71898d;
  font-size: 8px;
  line-height: 1.65;
}

.home-engineering-launcher > div {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 8px;
}

.home-engineering-launcher button {
  min-width: 0;
  min-height: 72px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
  padding: 11px;
  border: 1px solid rgba(104, 221, 247, 0.12);
  border-radius: 10px;
  color: #a8bbbc;
  background: rgba(5, 20, 24, 0.9);
  text-align: left;
  cursor: pointer;
}

.home-engineering-launcher button:hover,
.home-engineering-launcher button:focus-visible {
  color: #efffff;
  border-color: rgba(104, 221, 247, 0.38);
  background: rgba(26, 75, 83, 0.46);
  outline: none;
}

.home-engineering-launcher button > i {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: #d9ffff;
  background: linear-gradient(145deg, #247684, #164a54);
  font: 700 10px/1 "SFMono-Regular", Consolas, monospace;
}

.home-engineering-launcher button:first-child > i {
  background: linear-gradient(145deg, #b66a26, #784015);
}

.home-engineering-launcher button > span {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.home-engineering-launcher button strong,
.home-engineering-launcher button small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.home-engineering-launcher button strong {
  font-size: 11px;
}

.home-engineering-launcher button small {
  color: #6e888c;
  font-size: 8px;
}

.home-engineering-launcher button > b {
  padding: 3px 5px;
  border-radius: 999px;
  color: #72d6c2;
  background: rgba(55, 166, 145, 0.12);
  font-size: 7px;
  white-space: nowrap;
}

.home-engineering-launcher > footer {
  margin-top: 10px;
}

.project-home-card:has(.home-engineering-launcher) {
  width: min(930px, 100%);
}

@media (max-width: 980px) {
  .engineering-module-switcher {
    left: calc(50% - 90px);
    width: min(430px, calc(100vw - 390px));
    min-width: 320px;
  }

  .home-engineering-launcher > div {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .engineering-module-switcher {
    top: 126px;
    left: calc(50% - 58px);
    width: calc(100vw - 270px);
    min-width: 0;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-radius: 11px;
  }

  .engineering-module-switcher button {
    height: 36px;
    grid-template-columns: 1fr;
    place-items: center;
    padding: 3px;
    text-align: center;
  }

  .engineering-module-switcher button > i {
    width: 25px;
    height: 25px;
  }

  .engineering-module-switcher button > span {
    display: none;
  }

  .home-engineering-launcher {
    padding: 16px 18px;
  }

  .home-engineering-launcher > header {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .home-engineering-launcher > header small {
    display: none;
  }
}

@media (max-height: 560px) and (min-width: 641px) {
  .engineering-module-switcher {
    top: 109px;
  }
}

@media (max-height: 560px) and (max-width: 640px) {
  .engineering-module-switcher {
    top: 100px;
  }
}

/* Apple / Keynote-style workspace shell — 2026-08-31.
   This final layer intentionally consolidates the visual hierarchy without
   changing the shared project JSON or the 2D/3D engineering model. */

html,
body,
button,
input,
select,
textarea {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
}

.fresh-air-workbench {
  --fa-bg: #f5f5f7;
  --fa-canvas: #e9ebee;
  --fa-surface: rgba(255, 255, 255, 0.9);
  --fa-surface-solid: #ffffff;
  --fa-subtle: #f5f5f7;
  --fa-border: rgba(60, 60, 67, 0.12);
  --fa-border-strong: rgba(60, 60, 67, 0.2);
  --fa-ink: #1d1d1f;
  --fa-muted: #6e6e73;
  --fa-shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.035), 0 12px 34px rgba(31, 35, 40, 0.075);
  --fa-shadow-float: 0 22px 60px rgba(31, 35, 40, 0.15), 0 2px 8px rgba(31, 35, 40, 0.055);
  background: var(--fa-bg);
  font-size: 13px;
}

body[data-ui-theme="dark"] .fresh-air-workbench {
  --fa-bg: #111214;
  --fa-canvas: #1d1f22;
  --fa-surface: rgba(40, 40, 43, 0.9);
  --fa-surface-solid: #28282b;
  --fa-subtle: #222326;
  --fa-border: rgba(255, 255, 255, 0.1);
  --fa-border-strong: rgba(255, 255, 255, 0.18);
  --fa-ink: #f5f5f7;
  --fa-muted: #a1a1a6;
  --fa-shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.22), 0 14px 36px rgba(0, 0, 0, 0.28);
  --fa-shadow-float: 0 24px 64px rgba(0, 0, 0, 0.46), 0 2px 8px rgba(0, 0, 0, 0.28);
}

body[data-ui-theme="dark"][data-workspace-mode="freshAir"] {
  --fa-canvas: #1d1f22;
  --fa-border: rgba(255, 255, 255, 0.1);
  --fa-shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.22), 0 14px 36px rgba(0, 0, 0, 0.28);
}

body[data-workspace-mode="freshAir"][data-workspace-view="3d"] .fresh-air-workbench {
  background: transparent;
}

.fa-commandbar,
.fa-solarbar,
.fa-resource-rail,
.fa-plan-stage,
.fa-side-panel,
.fa-bottom-dock,
.engineering-module-switcher,
.fa-spatial-switch,
.fa-branch-tools {
  border: 1px solid var(--fa-border);
  background: var(--fa-surface);
  box-shadow: var(--fa-shadow-soft);
  -webkit-backdrop-filter: blur(28px) saturate(1.3);
  backdrop-filter: blur(28px) saturate(1.3);
}

.fa-commandbar {
  top: 10px;
  right: 12px;
  left: 12px;
  height: 58px;
  grid-template-columns: 246px minmax(0, 1fr) auto;
  overflow: hidden;
  border-radius: 22px;
}

.fa-brand-block {
  padding-inline: 18px;
  border-right: 0;
  background: transparent;
}

.fa-brand-block::after {
  top: 16px;
  bottom: 16px;
  left: 7px;
  width: 3px;
  border-radius: 999px;
}

.fa-brand-block img {
  border-radius: 11px;
}

.fa-brand-block strong {
  font-size: 14px;
  letter-spacing: -0.01em;
}

.fa-brand-block small {
  color: var(--fa-muted);
  font-size: 11px;
}

.fa-command-scroll {
  justify-content: flex-start;
  gap: 4px;
  padding: 5px 8px;
}

.fa-command-scroll [data-module-tools],
.fa-command-group button:disabled {
  display: none !important;
}

.fa-command-group {
  padding: 0;
  border-right: 0;
}

.fa-command-group button,
.fa-command-actions button {
  min-width: 58px;
  height: 46px;
  border-radius: 14px;
}

.fa-command-group button i,
.fa-command-actions button i {
  font-size: 13px;
}

.fa-command-group button span,
.fa-command-actions button span {
  font-size: 11px;
}

.fa-command-actions {
  gap: 3px;
  padding: 5px 7px;
  border-left: 0;
}

.fa-solarbar {
  top: 78px;
  right: 12px;
  left: 12px;
  height: 58px;
  grid-template-columns: 220px 160px minmax(280px, 1fr);
  gap: 18px;
  padding: 7px 20px;
  overflow: hidden;
  border-radius: 20px;
}

.fa-solar-copy > span {
  font-size: 12px;
}

.fa-solar-copy > small,
.fa-solar-date span,
.fa-solar-axis-meta,
.fa-solar-ticks {
  font-size: 10px;
}

.fa-solar-copy > strong {
  padding: 6px 10px;
  font-size: 14px;
}

.fa-solar-date input {
  height: 34px;
  border: 0;
  border-radius: 11px;
  background: color-mix(in srgb, var(--fa-subtle) 86%, transparent);
}

.fa-resource-rail {
  z-index: 52;
  top: 148px;
  bottom: 14px;
  left: 12px;
  width: 58px;
  gap: 5px;
  padding: 9px 5px;
  overflow: hidden;
  border-radius: 24px;
}

.fa-resource-rail button {
  min-height: 56px;
  border-radius: 15px;
}

.fa-resource-rail button i {
  width: 31px;
  height: 31px;
  border-radius: 11px;
}

.fa-resource-rail button span {
  font-size: 10px;
}

.fa-plan-stage {
  top: 148px;
  right: 338px;
  bottom: 14px;
  left: 82px;
  border-radius: 28px;
  background:
    radial-gradient(circle at 52% 45%, rgba(255, 255, 255, 0.58), transparent 42%),
    var(--fa-canvas);
}

body[data-ui-theme="dark"] .fa-plan-stage {
  background:
    radial-gradient(circle at 52% 45%, rgba(255, 255, 255, 0.045), transparent 42%),
    var(--fa-canvas);
}

.fa-plan-stage > header {
  top: 70px;
  left: 18px;
  right: 18px;
}

.fa-plan-stage > header > span,
.fa-plan-stage > header > small {
  min-height: 34px;
  display: flex;
  align-items: center;
  padding: 7px 12px;
  border: 0;
  border-radius: 12px;
  font-size: 11px;
  box-shadow: 0 7px 20px rgba(31, 35, 40, 0.08);
}

.fa-side-panel {
  top: 148px;
  right: 12px;
  bottom: 14px;
  width: 314px;
  grid-template-rows: 218px 50px minmax(0, 1fr);
  overflow: hidden;
  border-radius: 28px;
}

.fa-overview-card {
  margin: 12px 12px 0;
  border: 0;
  border-radius: 20px;
  background: color-mix(in srgb, var(--fa-canvas) 78%, var(--fa-surface-solid));
  box-shadow: inset 0 0 0 1px var(--fa-border);
}

.fa-overview-card header {
  top: 12px;
  left: 14px;
  right: 14px;
}

.fa-overview-card header span {
  font-size: 11px;
}

.fa-overview-card header button {
  min-height: 34px;
  padding-inline: 13px;
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
  box-shadow: 0 7px 18px color-mix(in srgb, var(--fa-accent) 26%, transparent);
  font-size: 11px;
  font-weight: 650;
}

.fa-side-tabs {
  gap: 4px;
  margin: 8px 12px 0;
  padding: 4px;
  border: 0;
  border-radius: 14px;
  background: color-mix(in srgb, var(--fa-border) 55%, transparent);
}

.fa-side-tabs button {
  min-height: 36px;
  border-radius: 11px;
  font-size: 11px;
}

.fa-side-tabs button.is-active {
  color: var(--fa-ink);
  background: var(--fa-surface-solid);
  box-shadow: 0 2px 8px rgba(31, 35, 40, 0.09);
}

.fa-side-scroll {
  margin-top: 6px;
  scrollbar-width: thin;
}

.fa-side-content {
  padding: 14px 16px 22px;
}

.fa-side-content > header span {
  font-size: 14px;
}

.fa-side-content > header small,
.fa-slider-field > span,
.fa-field-grid label > span,
.fa-field-grid label > small,
.fa-module-engineering-summary > p,
.fa-audit-list p,
.fa-audit-list article,
.fa-project-metrics dt {
  font-size: 11px;
}

.fa-slider-field,
.fa-field-grid,
.fa-module-state,
.fa-result-card,
.fa-audit-list p,
.fa-audit-list article,
.fa-library-grid button,
.fa-project-metrics div {
  border-radius: 14px;
}

.fa-slider-field {
  min-height: 47px;
}

.fa-field-grid input {
  font-size: 12px;
}

.fa-primary-button {
  min-height: 46px;
  border-radius: 14px;
  font-size: 12px;
}

.engineering-module-switcher {
  z-index: 68;
  top: 158px;
  left: 96px;
  width: 432px;
  min-width: 0;
  grid-template-columns: 1.25fr 0.86fr 1fr;
  gap: 4px;
  padding: 5px;
  transform: none;
  border-radius: 18px;
  box-shadow: 0 12px 34px rgba(31, 35, 40, 0.11);
}

.engineering-module-switcher:has(button[data-engineering-module="freshAir"][hidden]) {
  width: 318px;
  grid-template-columns: 1.18fr 1fr;
}

.engineering-module-switcher button {
  height: 44px;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  padding-inline: 9px;
  border-radius: 13px;
}

.engineering-module-switcher button > i {
  width: 30px;
  height: 30px;
  border-radius: 10px;
}

.engineering-module-switcher strong {
  font-size: 11px;
}

.engineering-module-switcher small {
  font-size: 9px;
}

.fa-spatial-switch {
  position: absolute;
  z-index: 69;
  top: 158px;
  right: 352px;
  width: 252px;
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 7px 6px 12px;
  border-radius: 18px;
  pointer-events: auto;
}

.fa-spatial-switch > span {
  color: var(--fa-muted);
  font-size: 10px;
  font-weight: 650;
  white-space: nowrap;
}

.fa-spatial-switch > div {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3px;
  padding: 3px;
  border-radius: 13px;
  background: color-mix(in srgb, var(--fa-border) 56%, transparent);
}

.fa-spatial-switch button {
  min-width: 0;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 8px;
  border: 0;
  border-radius: 10px;
  color: var(--fa-muted);
  background: transparent;
  cursor: pointer;
}

.fa-spatial-switch button i {
  font-size: 15px;
  font-style: normal;
}

.fa-spatial-switch button b {
  font-size: 11px;
  white-space: nowrap;
}

.fa-spatial-switch button:hover,
.fa-spatial-switch button.is-active {
  color: var(--fa-accent-strong);
  background: var(--fa-surface-solid);
  box-shadow: 0 2px 9px rgba(31, 35, 40, 0.11);
}

.fa-three-guide {
  position: absolute;
  z-index: 57;
  right: 356px;
  bottom: 86px;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 13px 9px 9px;
  border: 1px solid var(--fa-border);
  border-radius: 17px;
  color: var(--fa-ink);
  background: var(--fa-surface);
  box-shadow: var(--fa-shadow-soft);
  -webkit-backdrop-filter: blur(22px);
  backdrop-filter: blur(22px);
  pointer-events: none;
}

body[data-workspace-mode="freshAir"][data-workspace-view="3d"] .fa-three-guide {
  display: flex;
}

.fa-three-guide > i {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
  font-size: 18px;
  font-style: normal;
}

.fa-three-guide span {
  display: grid;
  gap: 2px;
}

.fa-three-guide strong {
  font-size: 12px;
}

.fa-three-guide small {
  color: var(--fa-muted);
  font-size: 10px;
}

body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
  top: 148px;
  right: 338px;
  bottom: 14px;
  left: 82px;
  width: calc(100% - 420px);
  height: calc(100% - 162px);
  border: 1px solid var(--fa-border);
  border-radius: 28px;
  background: var(--fa-canvas);
  box-shadow: var(--fa-shadow-soft);
  filter: saturate(1.06) contrast(1.035);
}

.fa-branch-tools {
  position: absolute;
  z-index: 78;
  bottom: 26px;
  left: 94px;
  border: 0;
  border-radius: 22px;
  background: transparent;
  box-shadow: none;
  pointer-events: auto;
}

.fa-branch-root {
  width: 220px;
  min-height: 58px;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 8px 12px 8px 9px;
  border: 1px solid var(--fa-border);
  border-radius: 20px;
  color: var(--fa-ink);
  background: var(--fa-surface);
  box-shadow: var(--fa-shadow-float);
  -webkit-backdrop-filter: blur(26px) saturate(1.3);
  backdrop-filter: blur(26px) saturate(1.3);
  text-align: left;
  cursor: pointer;
}

.fa-branch-root > i {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--fa-accent) 28%, transparent);
  font-size: 22px;
  font-style: normal;
  transition: transform 180ms ease;
}

.fa-branch-tools.is-open .fa-branch-root > i {
  transform: rotate(45deg);
}

.fa-branch-panel[hidden],
.fa-branch-leaves [hidden] {
  display: none !important;
}

.fa-branch-root > span {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.fa-branch-root strong {
  font-size: 13px;
}

.fa-branch-root small,
.fa-branch-root > b {
  color: var(--fa-muted);
  font-size: 10px;
  font-weight: 500;
}

.fa-branch-root:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--fa-accent) 34%, var(--fa-border));
  box-shadow: 0 26px 68px rgba(31, 35, 40, 0.19), 0 3px 9px rgba(31, 35, 40, 0.07);
}

.fa-branch-panel {
  position: absolute;
  bottom: 70px;
  left: 0;
  width: 392px;
  max-height: min(570px, calc(100vh - 250px));
  overflow: hidden;
  border: 1px solid var(--fa-border);
  border-radius: 25px;
  color: var(--fa-ink);
  background: color-mix(in srgb, var(--fa-surface-solid) 94%, transparent);
  box-shadow: var(--fa-shadow-float);
  -webkit-backdrop-filter: blur(32px) saturate(1.35);
  backdrop-filter: blur(32px) saturate(1.35);
  transform-origin: 34px 100%;
  animation: faBranchOpen 180ms cubic-bezier(0.2, 0.78, 0.2, 1) both;
}

@keyframes faBranchOpen {
  from { opacity: 0; transform: translateY(12px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.fa-branch-panel > header {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px 10px 18px;
  border-bottom: 1px solid var(--fa-border);
}

.fa-branch-panel > header span {
  display: grid;
  gap: 4px;
}

.fa-branch-panel > header small {
  color: var(--fa-accent-strong);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.fa-branch-panel > header strong {
  font-size: 16px;
  letter-spacing: -0.02em;
}

.fa-branch-panel > header button {
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  color: var(--fa-muted);
  background: var(--fa-subtle);
  font-size: 18px;
  cursor: pointer;
}

.fa-branch-tree {
  min-height: 272px;
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  padding: 12px;
}

.fa-branch-trunk {
  position: relative;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 4px 14px 4px 0;
}

.fa-branch-trunk::after {
  content: "";
  position: absolute;
  top: 25px;
  right: 4px;
  bottom: 25px;
  width: 1px;
  background: var(--fa-border-strong);
}

.fa-branch-trunk button {
  position: relative;
  z-index: 1;
  min-height: 54px;
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  gap: 7px;
  padding: 6px 7px;
  border: 0;
  border-radius: 14px;
  color: var(--fa-muted);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.fa-branch-trunk button::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -14px;
  width: 14px;
  height: 1px;
  background: var(--fa-border-strong);
}

.fa-branch-trunk button i {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--fa-subtle);
  font-size: 9px;
  font-style: normal;
  font-weight: 700;
}

.fa-branch-trunk button span {
  font-size: 11px;
  font-weight: 650;
}

.fa-branch-trunk button:hover,
.fa-branch-trunk button.is-active {
  color: var(--fa-accent-strong);
  background: var(--fa-accent-soft);
}

.fa-branch-trunk button.is-active i {
  color: #fff;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
}

.fa-branch-leaves {
  min-width: 0;
  max-height: min(420px, calc(100vh - 360px));
  overflow: auto;
  padding: 4px 2px 4px 12px;
}

.fa-branch-leaves > section > header {
  display: grid;
  gap: 3px;
  padding: 2px 3px 11px;
}

.fa-branch-leaves > section > header strong {
  font-size: 13px;
}

.fa-branch-leaves > section > header small {
  color: var(--fa-muted);
  font-size: 10px;
}

.fa-branch-pipe-diameter {
  margin: 0 3px 10px;
  padding: 9px 10px 10px;
  border: 1px solid var(--fa-border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--fa-surface-solid) 86%, var(--fa-subtle));
}

.fa-branch-pipe-diameter > span {
  color: var(--fa-muted);
  font-size: 9px;
}

.fa-branch-pipe-diameter select {
  min-height: 34px;
  padding: 6px 86px 6px 10px;
  border: 1px solid var(--fa-border);
  border-radius: 10px;
  color: var(--fa-ink);
  background: var(--fa-surface-solid);
  font-size: 11px;
}

.fa-branch-pipe-diameter small {
  right: 19px;
  bottom: 19px;
  max-width: 122px;
  color: var(--fa-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fa-coil-parameters {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 10px;
  padding: 10px;
  border: 1px solid var(--fa-border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--fa-surface-solid) 86%, var(--fa-subtle));
}

.fa-coil-parameters label {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.fa-coil-parameters label > span {
  color: var(--fa-muted);
  font-size: 9px;
}

.fa-coil-parameters select {
  width: 100%;
  min-height: 32px;
  padding: 5px 7px;
  border: 1px solid var(--fa-border);
  border-radius: 9px;
  color: var(--fa-ink);
  background: var(--fa-surface-solid);
  font-size: 10px;
}

.fa-coil-status {
  min-height: 52px;
  margin: 10px 3px 0;
  padding: 9px 10px;
  border: 1px solid color-mix(in srgb, var(--fa-accent) 24%, var(--fa-border));
  border-radius: 12px;
  color: var(--fa-muted);
  background: var(--fa-accent-soft);
  font-size: 9px;
  line-height: 1.5;
}

.fa-coil-status.is-success {
  color: var(--fa-accent-strong);
}

.fa-branch-leaves > section > div {
  display: grid;
  gap: 7px;
}

.fa-branch-leaves > section > div > button {
  min-height: 58px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--fa-border);
  border-radius: 15px;
  color: var(--fa-ink);
  background: color-mix(in srgb, var(--fa-surface-solid) 82%, var(--fa-subtle));
  text-align: left;
  cursor: pointer;
}

.fa-branch-leaves > section > div > button:hover {
  border-color: color-mix(in srgb, var(--fa-accent) 35%, var(--fa-border));
  background: var(--fa-accent-soft);
  transform: translateX(2px);
}

.fa-branch-leaves > section > div > button > i {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: var(--fa-accent-strong);
  background: var(--fa-accent-soft);
  font-size: 10px;
  font-style: normal;
  font-weight: 750;
}

.fa-branch-leaves > section > div > button > span {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.fa-branch-leaves > section > div > button strong {
  font-size: 12px;
}

.fa-branch-leaves > section > div > button small {
  color: var(--fa-muted);
  font-size: 10px;
}

.fa-branch-leaves > section > footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px;
  margin-top: 9px;
}

.fa-branch-leaves > section > footer button {
  min-height: 39px;
  padding-inline: 12px;
  border: 0;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--fa-accent), var(--fa-accent-strong));
  font-size: 11px;
  font-weight: 650;
  cursor: pointer;
}

.fa-branch-leaves > section > footer button:last-child {
  color: var(--fa-muted);
  background: var(--fa-subtle);
}

.fa-bottom-dock {
  bottom: 26px;
  left: 50%;
  height: 52px;
  padding: 5px;
  border-radius: 18px;
  transform: translateX(-50%);
}

.fa-bottom-dock > button[data-fa-command="home"],
.fa-bottom-dock > button:disabled,
.fa-bottom-dock .fa-dock-divider,
.fa-bottom-dock .fa-view-segment {
  display: none;
}

.fa-pipe-context {
  display: none;
}

body[data-engineering-interaction="pipe"] .fa-bottom-dock > button.fa-pipe-context {
  display: grid;
}

body[data-engineering-interaction="pipe"] .fa-bottom-dock > button.fa-pipe-context:disabled {
  display: grid;
  opacity: 0.38;
}

.fa-bottom-dock > button {
  min-width: 64px;
  min-height: 40px;
  border-radius: 13px;
  font-size: 11px;
}

/* The project home follows the same calm, rounded material language. */
body[data-ui-theme="light"] .project-home {
  background:
    radial-gradient(circle at 22% 12%, rgba(0, 113, 227, 0.1), transparent 30%),
    radial-gradient(circle at 82% 82%, rgba(79, 182, 148, 0.09), transparent 30%),
    rgba(245, 245, 247, 0.92);
}

.project-home-card:has(.home-engineering-launcher) {
  width: min(1020px, 100%);
}

body[data-ui-theme="light"] .project-home-card {
  border: 1px solid rgba(60, 60, 67, 0.1);
  border-radius: 30px;
  color: #1d1d1f;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 34px 100px rgba(31, 35, 40, 0.16), 0 2px 8px rgba(31, 35, 40, 0.05);
}

.project-home-card > header {
  padding: 38px 38px 25px;
  border-bottom: 0;
}

body[data-ui-theme="light"] .project-home-card h1 {
  margin: 11px 0 10px;
  color: #1d1d1f;
  font: 680 36px/1.14 -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", sans-serif;
  letter-spacing: -0.035em;
}

body[data-ui-theme="light"] .project-home-card > header p,
body[data-ui-theme="light"] .project-home-card > footer {
  color: #6e6e73;
  font-size: 13px;
}

.project-home-actions {
  gap: 12px;
  padding: 0 32px 24px;
  background: transparent;
}

body[data-ui-theme="light"] .project-home-actions button {
  min-height: 98px;
  padding: 18px 20px;
  border: 1px solid rgba(60, 60, 67, 0.11);
  border-radius: 18px;
  color: #3a3a3c;
  background: #f5f5f7;
}

body[data-ui-theme="light"] .project-home-actions button:hover,
body[data-ui-theme="light"] .project-home-actions button.is-primary {
  color: #1d1d1f;
  border-color: rgba(0, 113, 227, 0.22);
  background: rgba(0, 113, 227, 0.075);
  transform: translateY(-2px);
}

.project-home-actions button strong {
  font-size: 14px;
}

.project-home-actions button small {
  font-size: 11px;
}

.project-home-actions .project-import-status {
  padding: 10px 13px;
  border: 0;
  border-radius: 12px;
  background: #f5f5f7;
  font-size: 11px;
}

.home-engineering-launcher {
  margin: 0 32px 24px;
  padding: 22px;
  border: 0;
  border-radius: 22px;
  background: #f5f5f7;
}

body[data-ui-theme="light"] .home-engineering-launcher > header strong {
  color: #1d1d1f;
  font-size: 14px;
}

.home-engineering-launcher > header small,
.home-engineering-launcher > footer {
  font-size: 10px;
}

.home-engineering-launcher > div:has(> [data-engineering-launch="freshAir"][hidden]) {
  grid-template-columns: 1.15fr 1fr;
}

body[data-ui-theme="light"] .home-engineering-launcher button {
  min-height: 82px;
  border: 1px solid rgba(60, 60, 67, 0.11);
  border-radius: 17px;
  color: #3a3a3c;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.025);
}

body[data-ui-theme="light"] .home-engineering-launcher button:hover,
body[data-ui-theme="light"] .home-engineering-launcher button:focus-visible {
  color: #1d1d1f;
  border-color: rgba(0, 113, 227, 0.22);
  background: #fff;
  box-shadow: 0 12px 30px rgba(31, 35, 40, 0.08);
}

body[data-ui-theme="light"] .home-engineering-launcher button small,
body[data-ui-theme="light"] .home-engineering-launcher > header small,
body[data-ui-theme="light"] .home-engineering-launcher > footer {
  color: #6e6e73;
}

.saved-projects-home {
  margin: 0 32px 24px;
  padding: 20px 22px;
  border-radius: 20px;
  background: color-mix(in srgb, #f5f5f7 84%, transparent);
}

body[data-ui-theme="light"] .saved-projects-home > header strong {
  color: #3a3a3c;
  font-size: 12px;
}

.project-home-card > footer {
  margin: 0 32px 18px;
  padding: 12px 2px 0;
  border-top: 1px solid rgba(60, 60, 67, 0.1);
}

@media (max-width: 1180px) {
  .fa-commandbar {
    grid-template-columns: 206px minmax(0, 1fr) auto;
  }

  .fa-side-panel {
    width: 282px;
  }

  .fa-plan-stage {
    right: 306px;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    right: 306px;
    width: calc(100% - 388px);
  }

  .engineering-module-switcher {
    width: 276px;
  }

  .engineering-module-switcher:has(button[data-engineering-module="freshAir"][hidden]) {
    width: 210px;
  }

  .engineering-module-switcher button > span {
    display: none;
  }

  .engineering-module-switcher button {
    grid-template-columns: 1fr;
    place-items: center;
  }

  .fa-spatial-switch {
    right: 320px;
    width: 204px;
  }

  .fa-three-guide {
    right: 324px;
  }
}

@media (max-width: 900px) {
  .fa-commandbar {
    right: 8px;
    left: 8px;
    grid-template-columns: 170px minmax(0, 1fr) 104px;
  }

  .fa-brand-block img {
    display: none;
  }

  .fa-command-group button {
    min-width: 48px;
  }

  .fa-solarbar {
    right: 8px;
    left: 8px;
    grid-template-columns: 185px minmax(260px, 1fr);
  }

  .fa-solar-date {
    display: none;
  }

  .fa-resource-rail {
    bottom: min(40vh, 330px);
    left: 8px;
  }

  .fa-plan-stage {
    right: 8px;
    bottom: min(40vh, 330px);
    left: 78px;
  }

  .fa-side-panel {
    top: auto;
    right: 8px;
    bottom: 8px;
    left: 78px;
    width: auto;
    height: calc(min(40vh, 330px) - 18px);
    grid-template-columns: minmax(230px, 0.85fr) minmax(0, 1.15fr);
    grid-template-rows: 48px minmax(0, 1fr);
    border-radius: 24px;
  }

  .fa-overview-card {
    grid-row: 1 / span 2;
    height: auto;
  }

  .fa-side-tabs {
    grid-column: 2;
    grid-row: 1;
  }

  .fa-side-scroll {
    grid-column: 2;
    grid-row: 2;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    top: 148px;
    right: 8px;
    bottom: min(40vh, 330px);
    left: 78px;
    width: calc(100% - 86px);
    height: calc(100% - 148px - min(40vh, 330px));
  }

  .engineering-module-switcher {
    left: 90px;
    width: 292px;
  }

  .engineering-module-switcher:has(button[data-engineering-module="freshAir"][hidden]) {
    width: 216px;
  }

  .fa-spatial-switch {
    right: 20px;
    width: 222px;
  }

  .fa-three-guide {
    display: none !important;
  }

  .fa-branch-tools {
    bottom: calc(min(40vh, 330px) + 18px);
    left: 90px;
  }

  .fa-bottom-dock {
    right: 20px;
    bottom: calc(min(40vh, 330px) + 22px);
    left: auto;
    transform: none;
  }

  .fa-branch-panel {
    max-height: calc(100vh - min(40vh, 330px) - 170px);
  }

  .fa-branch-tree {
    min-height: 0;
  }

  .fa-branch-leaves {
    max-height: calc(100vh - min(40vh, 330px) - 258px);
  }
}

@media (max-width: 640px) {
  .fa-commandbar {
    top: 6px;
    height: 52px;
    grid-template-columns: 105px minmax(0, 1fr) 84px;
    border-radius: 18px;
  }

  .fa-brand-block {
    padding-inline: 11px;
  }

  .fa-brand-block strong {
    font-size: 11px;
  }

  .fa-brand-block small,
  .fa-command-group button span,
  .fa-command-actions button span {
    display: none;
  }

  .fa-command-scroll {
    padding-inline: 2px;
  }

  .fa-command-group button,
  .fa-command-actions button {
    min-width: 40px;
    height: 40px;
  }

  .fa-solarbar {
    top: 66px;
    height: 54px;
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 8px;
    padding: 6px 10px;
    border-radius: 17px;
  }

  .fa-solar-copy > span,
  .fa-solar-copy > small,
  .fa-solar-axis-meta,
  .fa-solar-ticks span:nth-child(even) {
    display: none;
  }

  .fa-resource-rail {
    top: 128px;
    bottom: 246px;
    width: 50px;
    border-radius: 20px;
  }

  .fa-resource-rail button {
    min-height: 48px;
  }

  .fa-resource-rail button span {
    display: none;
  }

  .fa-plan-stage {
    top: 128px;
    right: 8px;
    bottom: 246px;
    left: 66px;
    border-radius: 22px;
  }

  .fa-plan-stage > header {
    top: 108px;
  }

  .fa-plan-stage > header > small {
    display: none;
  }

  .fa-side-panel {
    right: 8px;
    bottom: 8px;
    left: 66px;
    height: 230px;
    grid-template-columns: 1fr;
    grid-template-rows: 48px minmax(0, 1fr);
    border-radius: 22px;
  }

  .fa-overview-card {
    display: none;
  }

  .fa-side-tabs,
  .fa-side-scroll {
    grid-column: 1;
  }

  .fa-side-tabs {
    grid-row: 1;
  }

  .fa-side-scroll {
    grid-row: 2;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    top: 128px;
    right: 8px;
    bottom: 246px;
    left: 66px;
    width: calc(100% - 74px);
    height: calc(100% - 374px);
    border-radius: 22px;
  }

  .engineering-module-switcher {
    top: 136px;
    right: 16px;
    left: 74px;
    width: auto;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-radius: 16px;
  }

  .engineering-module-switcher:has(button[data-engineering-module="freshAir"][hidden]) {
    width: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .engineering-module-switcher button {
    height: 38px;
  }

  .engineering-module-switcher button > i {
    width: 27px;
    height: 27px;
  }

  .fa-spatial-switch {
    top: 190px;
    right: 16px;
    left: 74px;
    width: auto;
    min-height: 50px;
    border-radius: 16px;
  }

  .fa-spatial-switch > span {
    display: none;
  }

  .fa-three-guide {
    display: none !important;
  }

  .fa-three-guide small {
    display: none;
  }

  .fa-branch-tools {
    bottom: 254px;
    left: 74px;
  }

  .fa-branch-root {
    width: 58px;
    min-height: 58px;
    grid-template-columns: 1fr;
    padding: 9px;
    border-radius: 19px;
  }

  .fa-branch-root > span,
  .fa-branch-root > b {
    display: none;
  }

  .fa-branch-panel {
    width: min(388px, calc(100vw - 82px));
    max-height: max(220px, calc(100vh - 410px));
  }

  .fa-branch-leaves {
    max-height: max(132px, calc(100vh - 500px));
  }

  .fa-bottom-dock {
    right: 16px;
    bottom: 254px;
    left: auto;
    max-width: calc(100vw - 156px);
    transform: none;
  }

  .fa-bottom-dock > button {
    min-width: 44px;
  }

  .fa-bottom-dock > button span {
    display: none;
  }

  .home-engineering-launcher,
  .saved-projects-home {
    margin-inline: 16px;
  }

  .project-home-card > header {
    padding: 28px 22px 20px;
  }

  body[data-ui-theme="light"] .project-home-card h1 {
    font-size: 28px;
  }

  .project-home-actions {
    grid-template-columns: 1fr;
    padding-inline: 16px;
  }
}

@media (max-height: 620px) and (min-width: 901px) {
  .fa-commandbar {
    top: 6px;
    height: 50px;
  }

  .fa-solarbar {
    top: 64px;
    height: 46px;
  }

  .fa-resource-rail,
  .fa-plan-stage,
  .fa-side-panel {
    top: 118px;
  }

  .engineering-module-switcher,
  .fa-spatial-switch {
    top: 126px;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    top: 118px;
    height: calc(100% - 132px);
  }

  .fa-branch-panel {
    max-height: calc(100vh - 210px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .fa-branch-panel {
    animation: none;
  }
}

@media (max-width: 640px) and (max-height: 620px) and (orientation: landscape) {
  .fa-commandbar {
    top: 4px;
    height: 46px;
  }

  .fa-command-group button,
  .fa-command-actions button {
    height: 36px;
  }

  .fa-solarbar {
    top: 56px;
    height: 44px;
    padding-block: 4px;
  }

  .fa-resource-rail,
  .fa-side-panel,
  .fa-three-guide {
    display: none !important;
  }

  .fa-plan-stage {
    top: 108px;
    right: 8px;
    bottom: 8px;
    left: 8px;
  }

  .fa-plan-stage > header {
    display: none;
  }

  body[data-workspace-mode="freshAir"][data-workspace-view="3d"] #three-bedroom-canvas {
    top: 108px;
    right: 8px;
    bottom: 8px;
    left: 8px;
    width: calc(100% - 16px);
    height: calc(100% - 116px);
  }

  .engineering-module-switcher {
    top: 116px;
    right: auto;
    left: 16px;
    width: 276px;
  }

  .engineering-module-switcher:has(button[data-engineering-module="freshAir"][hidden]) {
    width: 210px;
  }

  .fa-spatial-switch {
    top: 116px;
    right: 16px;
    left: auto;
    width: 212px;
  }

  .fa-branch-tools {
    bottom: 16px;
    left: 16px;
  }

  .fa-branch-panel {
    bottom: 66px;
    width: min(420px, calc(100vw - 32px));
    max-height: 160px;
    overflow: auto;
  }

  .fa-branch-tree {
    min-height: 0;
  }

  .fa-branch-leaves {
    max-height: none;
    overflow: visible;
  }

  .fa-bottom-dock {
    right: 16px;
    bottom: 16px;
    left: auto;
    max-width: calc(100vw - 108px);
    transform: none;
  }
}