@font-face {
  font-family: "等线 Light";
  src: url("/assets/fonts/DengXian-Light.ttf") format("truetype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

:root {
  --white: #f5f5f2;
  --accent: #b8dcf5;
  --accent-deep: #7eb8e0;
  --ink: #1e1e20;
  --ink-soft: #4a4a4e;
  --pei: #d4c4a8;
  --surface: rgba(255, 255, 255, 0.72);
  --line: rgba(30, 30, 32, 0.08);
  --radius: 2px;
  --font-display: "等线 Light", "DengXian Light", DengXian, sans-serif;
  --font-body: "等线 Light", "DengXian Light", DengXian, sans-serif;
  --max: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  background:
    radial-gradient(1200px 700px at 85% -10%, rgba(184, 220, 245, 0.55), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, rgba(212, 196, 168, 0.22), transparent 55%),
    linear-gradient(180deg, #eef6fb 0%, var(--white) 38%, #f7fafc 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem clamp(1.2rem, 4vw, 2.5rem);
  backdrop-filter: blur(14px);
  background: rgba(245, 245, 242, 0.55);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.site-nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(245, 245, 242, 0.88);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.brand-en {
  font-weight: 700;
  font-size: 0.92rem;
}

.brand-cn {
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.92rem;
}

.nav-links a {
  opacity: 0.72;
  transition: opacity 0.2s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  opacity: 1;
}

.nav-cta {
  padding: 0.55rem 1rem;
  background: var(--ink);
  color: var(--white) !important;
  opacity: 1 !important;
  border-radius: 999px;
  font-size: 0.86rem;
}

/* —— 模型站首页（无整机图） —— */
.models-hero {
  padding: 7rem clamp(1.2rem, 4vw, 2.5rem) 2.2rem;
}

.models-hero .section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.models-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.8rem;
  line-height: 1.1;
}

.models-hero h1 em {
  font-style: normal;
  color: var(--accent-deep);
}

.home-community {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.community-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.95rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.75);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.community-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(30, 30, 32, 0.06);
}

.community-card strong {
  font-family: var(--font-display);
}

.community-card span {
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.community-card .dl {
  margin-top: 0.35rem;
  color: var(--accent-deep);
  font-size: 0.85rem;
  text-decoration: underline;
  cursor: pointer;
}

.empty-hint {
  color: var(--ink-soft);
  margin: 0;
}

.hero {
  min-height: 100svh;
  display: grid;
  align-items: end;
  position: relative;
  padding: 6.5rem clamp(1.2rem, 4vw, 2.5rem) 2.5rem;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 42%;
  transform: scale(1.04);
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(245, 245, 242, 0.92) 0%, rgba(245, 245, 242, 0.55) 42%, rgba(245, 245, 242, 0.08) 72%),
    linear-gradient(180deg, rgba(245, 245, 242, 0.15) 0%, rgba(30, 30, 32, 0.18) 100%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 34rem;
  animation: riseIn 0.9s ease both;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 0.8rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent-deep);
}

.hero-lead {
  margin: 0 0 1.6rem;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 28rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--ink);
  color: var(--white);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.55);
  border-color: var(--line);
}

/* —— Sections —— */
.section {
  padding: clamp(4rem, 8vw, 6.5rem) clamp(1.2rem, 4vw, 2.5rem);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section-head {
  max-width: 36rem;
  margin-bottom: 2.4rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.7rem;
  line-height: 1.15;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.feature-item h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 0.45rem;
}

.feature-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.feature-item .metric {
  display: block;
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
  color: var(--accent-deep);
}

.product-block {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.product-visual {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 20%, rgba(184, 220, 245, 0.45), transparent 50%),
    linear-gradient(160deg, #e8f3fa, #f5f5f2 70%);
  min-height: 420px;
}

.product-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  animation: floatSoft 7s ease-in-out infinite;
}

.product-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 0.8rem;
  letter-spacing: -0.02em;
}

.product-copy p {
  color: var(--ink-soft);
  margin: 0 0 1.2rem;
}

.spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.spec-list li {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.6rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.spec-list span {
  color: var(--ink-soft);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.model-tile {
  position: relative;
  display: block;
  aspect-ratio: 1 / 1.05;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(160deg, #eaf4fb, #f5f5f2);
  border: 1px solid var(--line);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.model-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(30, 30, 32, 0.08);
}

.model-tile canvas,
.model-tile .thumb {
  width: 100%;
  height: 78%;
  display: block;
}

.model-tile .meta {
  padding: 0.85rem 1rem 1rem;
}

.model-tile .meta strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
}

.model-tile .meta span {
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.cta-band {
  margin: 0 clamp(1.2rem, 4vw, 2.5rem) 4rem;
  border-radius: 22px;
  padding: clamp(2.2rem, 5vw, 3.4rem);
  background:
    linear-gradient(135deg, rgba(184, 220, 245, 0.55), rgba(245, 245, 242, 0.9)),
    var(--accent);
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 1.5rem;
  align-items: center;
  max-width: calc(var(--max) + 2rem);
  margin-left: auto;
  margin-right: auto;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 0.45rem;
}

.cta-band p {
  margin: 0;
  color: var(--ink-soft);
}

.site-footer {
  padding: 2rem clamp(1.2rem, 4vw, 2.5rem) 2.8rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--ink-soft);
  font-size: 0.88rem;
  max-width: var(--max);
  margin: 0 auto;
}

/* —— Models page —— */
.page-hero {
  padding: 7.5rem clamp(1.2rem, 4vw, 2.5rem) 2rem;
  max-width: var(--max);
  margin: 0 auto;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}

.page-hero p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 34rem;
}

.viewer-shell {
  max-width: var(--max);
  margin: 0 auto 3rem;
  padding: 0 clamp(1.2rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: 1.5fr 0.9fr;
  gap: 1.2rem;
}

.viewer-stage {
  position: relative;
  min-height: 520px;
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 30%, rgba(184, 220, 245, 0.35), transparent 55%),
    linear-gradient(180deg, #eef5fa, #f5f5f2);
  border: 1px solid var(--line);
}

#viewer-canvas {
  width: 100%;
  height: 100%;
  display: block;
  min-height: 520px;
}

.viewer-hint {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
  background: rgba(245, 245, 242, 0.8);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  pointer-events: none;
}

.viewer-side {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.model-pick {
  text-align: left;
  padding: 1rem 1.1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  cursor: pointer;
  font: inherit;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.model-pick:hover,
.model-pick.is-active {
  border-color: var(--accent-deep);
  background: rgba(184, 220, 245, 0.28);
}

.model-pick strong {
  display: block;
  font-family: var(--font-display);
  margin-bottom: 0.2rem;
}

.model-pick span {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.upload-box {
  margin-top: 0.4rem;
  padding: 1rem;
  border: 1px dashed var(--accent-deep);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.45);
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.upload-box input {
  margin-top: 0.55rem;
  width: 100%;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.08) translate3d(-1.5%, 1%, 0);
  }
}

@keyframes floatSoft {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@media (max-width: 900px) {
  .feature-strip,
  .gallery-grid,
  .product-block,
  .viewer-shell,
  .cta-band {
    grid-template-columns: 1fr;
  }

  .hero-media img {
    object-position: 70% 40%;
  }

  .hero-media::after {
    background:
      linear-gradient(180deg, rgba(245, 245, 242, 0.35) 0%, rgba(245, 245, 242, 0.92) 72%),
      linear-gradient(90deg, rgba(245, 245, 242, 0.4), transparent 60%);
  }

  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .product-visual {
    min-height: 280px;
  }

  .viewer-stage,
  #viewer-canvas {
    min-height: 380px;
  }
}

/* App 内嵌：只展示模型，隐藏官网导航/页脚 */
html.app-embed .app-hide {
  display: none !important;
}

/* App WebView：隐藏所有提示性文案 */
html.app-embed .lead,
html.app-embed .hint,
html.app-embed .viewer-hint,
html.app-embed .empty-hint,
html.app-embed .mine-hint,
html.app-embed .library-lead,
html.app-embed .library-top {
  display: none !important;
}

html.app-embed body {
  background: #f5f5f2;
}

html.app-embed .viewer-shell {
  margin: 0;
  padding: 0.5rem 0.6rem 0.8rem;
  max-width: none;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}

html.app-embed .viewer-stage,
html.app-embed #viewer-canvas {
  min-height: 58vh;
  border-radius: 14px;
}

html.app-embed .viewer-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

html.app-embed .upload-box {
  grid-column: 1 / -1;
  margin-top: 0;
}

.community-models {
  display: grid;
  gap: 0.45rem;
  grid-column: 1 / -1;
}

.community-models .model-pick {
  width: 100%;
}

.community-models h3 {
  grid-column: 1 / -1;
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: 0.95rem;
}

.model-pick-thumb {
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 0.65rem;
  text-align: left !important;
}

.model-pick-thumb img {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  object-fit: cover;
  background: #eef4f9;
  flex-shrink: 0;
}

.model-pick-thumb .model-pick-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}