/* ============================================================
   医派 MEDPARTY · 医疗创作者联盟
   玻璃拟态 / Glassmorphism 风格（参考 aliyun 视觉语言）
   仅调整视觉层，文字内容保持不变
   ============================================================ */

:root {
  --teal-900: #04342C;
  --teal-800: #085041;
  --teal-700: #0F6E56;
  --teal-600: #14876b;
  --teal-500: #1D9E75;
  --teal-300: #5DCAA5;
  --teal-100: #9FE1CB;
  --teal-50:  #E1F5EE;
  --teal-25:  #F3FBF8;

  --ink:      #0f1a17;
  --ink-2:    #2c3733;
  --muted:    #5f6b66;
  --faint:    #8a938e;
  --line:     #e4e9e6;
  --line-2:   #eef2f0;
  --paper:    #ffffff;
  --paper-2:  #f7faf8;
  --paper-3:  #f0f5f2;

  /* 玻璃拟态 token */
  --glass:        linear-gradient(180deg, rgba(255,255,255,.72), rgba(255,255,255,.5));
  --glass-soft:   linear-gradient(180deg, rgba(255,255,255,.6), rgba(255,255,255,.42));
  --glass-border: 1px solid rgba(255,255,255,.65);
  --glass-blur:   blur(18px) saturate(165%);
  --glass-shadow: 0 18px 44px -26px rgba(15,110,86,.30);
  --glass-shadow-hover: 0 26px 60px -28px rgba(15,110,86,.42);

  --maxw: 1180px;
  --gut: clamp(20px, 5vw, 64px);
  --sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Roboto Mono", ui-monospace, Menlo, Consolas, monospace;
  --serif: "Songti SC", "Noto Serif SC", Georgia, serif;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

/* ---------- 分层渐变 + 模糊光斑背景（玻璃拟态基底） ---------- */
body {
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(42vw 42vw at 10% 4%,  rgba(94,202,165,.20), transparent 60%),
    radial-gradient(38vw 38vw at 92% 10%, rgba(29,158,117,.14), transparent 62%),
    radial-gradient(52vw 52vw at 80% 100%, rgba(159,225,203,.22), transparent 60%),
    linear-gradient(180deg, #f7fbf9 0%, #ffffff 46%, #f1faf6 100%);
  background-attachment: fixed;
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(30vw 30vw at 18% 22%, rgba(93,202,165,.16), transparent 70%),
    radial-gradient(26vw 26vw at 84% 64%, rgba(15,110,86,.10), transparent 70%);
  filter: blur(28px);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut); }

/* ---------- micro label (英文小标签) ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--teal-700);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--teal-500);
  display: inline-block;
}
.eyebrow.plain::before { display: none; }

/* ---------- typography ---------- */
h1,h2,h3 { font-weight: 800; line-height: 1.08; letter-spacing: -.01em; color: var(--ink); }
.display { font-size: clamp(40px, 7vw, 82px); font-weight: 800; letter-spacing: -.03em; line-height: .98; }
.h-sec { font-size: clamp(28px, 4.2vw, 46px); font-weight: 800; letter-spacing: -.02em; }
.lead { font-size: clamp(16px, 1.4vw, 19px); color: var(--muted); max-width: 60ch; }
.lead.nowrap { white-space: nowrap; max-width: none; }
@media (max-width: 720px) { .lead.nowrap { white-space: normal; } }
.serif-accent { font-family: var(--serif); font-style: italic; font-weight: 400; }

/* ============================================================
   Header / Nav  —— 毛玻璃悬浮导航
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.55);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.55);
  box-shadow: 0 8px 30px -22px rgba(15,110,86,.35);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: -.02em; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--teal-700), var(--teal-500));
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--mono); font-weight: 700; font-size: 17px;
  box-shadow: 0 6px 16px -8px rgba(15,110,86,.6);
}
.brand .zh { font-size: 19px; }
.brand .en { font-family: var(--mono); font-size: 11px; letter-spacing: .18em; color: var(--faint); text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 14.5px; color: var(--ink-2); font-weight: 500;
  position: relative; padding: 4px 0; transition: color .2s;
}
.nav-links a::after {
  content:""; position:absolute; left:0; bottom:-2px; width:0; height:2px;
  background: var(--teal-600); transition: width .25s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--teal-700); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
/* .nav-cta 已改为与普通导航文字一致：去掉绿色色块，仅保留文字链接 */

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; transition: .3s; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 15px; font-weight: 600; padding: 13px 26px;
  border-radius: 999px; cursor: pointer; border: 1px solid transparent;
  transition: transform .2s var(--ease), background .2s, border-color .2s, color .2s, box-shadow .2s;
}
.btn .arw { font-family: var(--mono); transition: transform .2s var(--ease); }
.btn:hover .arw { transform: translateX(4px); }
.btn-primary {
  background: linear-gradient(135deg, var(--teal-700), var(--teal-500));
  color: #fff;
  box-shadow: 0 14px 30px -14px rgba(15,110,86,.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 38px -16px rgba(15,110,86,.8); }
.btn-ghost {
  background: rgba(255,255,255,.5);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--ink); border-color: rgba(15,110,86,.22);
}
.btn-ghost:hover { border-color: var(--teal-500); color: var(--teal-700); background: rgba(255,255,255,.72); }
.btn-light { background: rgba(255,255,255,.92); color: var(--teal-800); }
.btn-light:hover { transform: translateY(-2px); }

/* ============================================================
   Sections generic
   ============================================================ */
section { position: relative; }
.section { padding: clamp(64px, 9vw, 120px) 0; }
.section-head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 60px); }
.section-head .h-sec { margin: 16px 0 14px; }

/* 行内 style 设定的浅底区块改为透明，让分层渐变透出（不改动 HTML 文字） */
.section[style*="paper-2"] { background: transparent !important; border-color: transparent !important; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding: clamp(60px, 9vw, 110px) 0 clamp(50px, 7vw, 90px); position: relative; }
.hero::before {
  content:""; position:absolute; inset:0; z-index:-1;
  background:
    radial-gradient(46% 50% at 78% 12%, rgba(94,202,165,.28), transparent 62%),
    radial-gradient(40% 44% at 96% 80%, rgba(29,158,117,.16), transparent 60%),
    linear-gradient(180deg, rgba(243,251,248,.6) 0%, rgba(255,255,255,.2) 70%);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(30px,4vw,64px); align-items: center; }
.hero .display { margin: 22px 0 24px; }
.hero .display em { color: var(--teal-700); }
.hero .lead { color: var(--muted); }
.hero .eyebrow { color: var(--teal-700); }
.hero .eyebrow::before { background: var(--teal-500); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.hero-meta { display: flex; gap: 30px; margin-top: 42px; flex-wrap: wrap; }
.hero-meta .m { }
.hero-meta .n { font-size: 30px; font-weight: 800; letter-spacing: -.02em; color: var(--teal-800); font-family: var(--mono); }
.hero-meta .l { font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* Hero 名片 —— 毛玻璃卡片 */
.hero-card {
  background: var(--glass);
  backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--r-lg);
  padding: 30px; position: relative; overflow: hidden;
  color: var(--ink);
}
.hero-card::after {
  content:""; position:absolute; right:-40px; bottom:-40px; width:180px; height:180px;
  border-radius:50%; border:1px solid rgba(15,110,86,.14);
}
.hero-card .badge { font-family: var(--mono); font-size: 11px; letter-spacing:.2em; color: var(--teal-700); text-transform: uppercase; }
.hero-card .quote { font-size: 21px; font-weight: 700; line-height: 1.35; margin: 16px 0 22px; color: var(--ink-2); }
.hero-card .who { display:flex; align-items:center; gap:12px; }
.hero-card .ava { width:42px; height:42px; border-radius:50%; background: linear-gradient(135deg, var(--teal-600), var(--teal-400, var(--teal-500))); display:grid; place-items:center; font-weight:700; color:#fff; }
.hero-card .who small { display:block; color: var(--muted); font-size: 12.5px; }

/* 关于页 MISSION 名片：深绿底 + 白字，保证深色背景上文字清晰 */
.hero-card--dark {
  background: linear-gradient(135deg, var(--teal-800), var(--teal-600));
  border-color: rgba(255,255,255,.18);
  color: #fff;
  box-shadow: 0 26px 60px -30px rgba(8,80,65,.6);
}
.hero-card--dark::after { border-color: rgba(255,255,255,.18); }
.hero-card--dark .badge { color: rgba(255,255,255,.78); }
.hero-card--dark .quote { color: rgba(255,255,255,.94); }
.hero-card--dark .who strong { color: #fff; }
.hero-card--dark .who small { color: rgba(255,255,255,.7); }

/* ============================================================
   STATS band —— 玻璃条
   ============================================================ */
.stats {
  border-top: 1px solid rgba(255,255,255,.6); border-bottom: 1px solid rgba(255,255,255,.6);
  background: var(--glass-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
/* partner 页深绿玻璃统计区：与首页玻璃手法一致（模糊+细边框+轻投影），但背景更实、白字加投影以确保可读 */
.stats--glass-dark {
  background: linear-gradient(180deg, rgba(15,110,86,.82), rgba(12,92,72,.70));
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid rgba(255,255,255,.22);
  border-bottom: 1px solid rgba(255,255,255,.22);
  box-shadow: var(--glass-shadow);
}
.stats--glass-dark .stat { border-right-color: rgba(255,255,255,.16); }
.stats--glass-dark .stat .n { color: #fff !important; text-shadow: 0 1px 3px rgba(0,0,0,.28); }
.stats--glass-dark .stat .l { color: rgba(255,255,255,.9) !important; text-shadow: 0 1px 2px rgba(0,0,0,.24); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 40px var(--gut); text-align: center; border-right: 1px solid rgba(15,110,86,.10); }
.stats-grid .stat:last-child { border-right: 0; }
.stat .n { font-family: var(--mono); font-size: clamp(32px, 4vw, 46px); font-weight: 700; color: var(--teal-800); letter-spacing: -.02em; }
.stat .l { font-size: 13.5px; color: var(--muted); margin-top: 6px; }

/* ============================================================
   Feature / mission cards —— 玻璃卡片
   ============================================================ */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

.card {
  background: var(--glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--r-md);
  padding: 30px; transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.card:hover { transform: translateY(-4px); border-color: var(--teal-300); box-shadow: var(--glass-shadow-hover); }
.card .ic {
  width: 46px; height: 46px; border-radius: 12px; background: var(--teal-50); color: var(--teal-700);
  display: grid; place-items: center; margin-bottom: 18px;
}
.card .ic svg { width: 24px; height: 24px; }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card .num { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing:.15em; }

/* ---------- path steps —— 玻璃卡片 ---------- */
.path { counter-reset: step; }
.step {
  background: var(--glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--r-md);
  padding: 28px; position: relative; overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s;
}
.step:hover { transform: translateY(-4px); border-color: var(--teal-300); }
.step .idx { font-family: var(--mono); font-size: 13px; color: var(--teal-600); font-weight: 600; letter-spacing:.1em; }
.step h3 { font-size: 19px; margin: 14px 0 10px; }
.step p { font-size: 14px; color: var(--muted); }
.step .big { position:absolute; right: 14px; top: 2px; font-family: var(--mono); font-size: 74px; font-weight: 800; color: rgba(15,110,86,.12); line-height:1; z-index:0; }
.step > * { position: relative; z-index: 1; }

/* ============================================================
   Creators wall —— 玻璃卡片
   ============================================================ */
.creator {
  background: var(--glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--r-md);
  padding: 24px; transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.creator:hover { transform: translateY(-4px); border-color: var(--teal-300); box-shadow: var(--glass-shadow-hover); }
.creator .top { display: flex; align-items: center; gap: 14px; }
.creator .ava {
  width: 54px; height: 54px; border-radius: 50%; flex: none;
  display: grid; place-items: center; font-weight: 800; font-size: 19px; color: #fff;
}
.creator .name { font-weight: 700; font-size: 16.5px; }
.creator .role { font-size: 12.5px; color: var(--muted); }
.creator .tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.tag {
  font-size: 12px; padding: 4px 11px; border-radius: 999px;
  background: rgba(225,245,238,.75); color: var(--teal-800); font-weight: 500;
  border: 1px solid rgba(15,110,86,.12);
}
.tag.plat { background: rgba(240,245,242,.7); color: var(--ink-2); }
.creator .foot { display:flex; justify-content: space-between; margin-top: 18px; padding-top: 16px; border-top: 1px solid rgba(15,110,86,.12); font-size: 12.5px; color: var(--muted); }
.creator .foot b { color: var(--teal-800); font-family: var(--mono); }

/* ============================================================
   Content / works grid —— 玻璃卡片
   ============================================================ */
.work {
  border: var(--glass-border); box-shadow: var(--glass-shadow); border-radius: var(--r-md); overflow: hidden;
  background: var(--glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: transform .3s var(--ease), box-shadow .3s;
}
.work:hover { transform: translateY(-4px); box-shadow: var(--glass-shadow-hover); }
.work .thumb { aspect-ratio: 16/10; display: grid; place-items: center; color: #fff; position: relative; }
.work .thumb .kind { position:absolute; left:14px; top:14px; font-family: var(--mono); font-size: 11px; letter-spacing:.12em; background: rgba(0,0,0,.25); padding: 4px 10px; border-radius: 999px; }
.work .thumb .play { width: 54px; height: 54px; border-radius: 50%; background: rgba(255,255,255,.22); display:grid; place-items:center; border:1px solid rgba(255,255,255,.5); }
.work .body { padding: 20px; }
.work .cat { font-family: var(--mono); font-size: 11.5px; letter-spacing:.1em; color: var(--teal-700); text-transform: uppercase; }
.work h3 { font-size: 17px; margin: 9px 0 12px; line-height: 1.35; }
.work .by { display:flex; align-items:center; justify-content: space-between; font-size: 12.5px; color: var(--muted); }

/* ============================================================
   CTA band —— 品牌渐变玻璃面板（白字）
   ============================================================ */
.cta-band {
  background: linear-gradient(135deg, var(--teal-800), var(--teal-600));
  color: #fff; border-radius: var(--r-lg);
  padding: clamp(44px, 6vw, 76px); text-align: center; position: relative; overflow: hidden;
  box-shadow: 0 30px 70px -34px rgba(8,80,65,.55);
}
.cta-band::before, .cta-band::after {
  content:""; position:absolute; border-radius:50%; border:1px solid rgba(255,255,255,.14);
}
.cta-band::before { width: 320px; height:320px; left:-90px; top:-120px; }
.cta-band::after  { width: 240px; height:240px; right:-70px; bottom:-110px; }
.cta-band > * { position: relative; z-index:1; }
.cta-band h2 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 16px; color: #fff; }
.cta-band p { color: rgba(255,255,255,.85); max-width: 52ch; margin: 0 auto 30px; font-size: 16px; }
.cta-actions { display:flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   Page hero (子页面通用页眉)
   ============================================================ */
.page-hero { padding: clamp(60px, 8vw, 96px) 0 clamp(30px,4vw,48px); border-bottom: 1px solid rgba(255,255,255,.5); background: transparent; }
.page-hero .display { font-size: clamp(34px, 5.5vw, 60px); margin: 18px 0 18px; }
.crumb { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing:.08em; }
.crumb a:hover { color: var(--teal-700); }

/* ---------- filter chips ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.chip {
  font-size: 13.5px; padding: 8px 16px; border-radius: 999px; cursor: pointer;
  border: 1px solid rgba(15,110,86,.2); background: rgba(255,255,255,.5); color: var(--ink-2);
  transition: all .2s;
}
.chip:hover { border-color: var(--teal-300); }
.chip.active { background: linear-gradient(135deg, var(--teal-700), var(--teal-600)); color: #fff; border-color: transparent; box-shadow: 0 10px 22px -12px rgba(15,110,86,.7); }

/* ---------- prose / about ---------- */
.prose p { color: var(--muted); font-size: 16px; margin-bottom: 18px; }
.prose p:last-child { margin-bottom: 0; }
.value-list { display: grid; gap: 2px; }
.value-row { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 26px 0; border-top: 1px solid rgba(15,110,86,.14); }
.value-row .k { font-family: var(--mono); font-size: 13px; color: var(--teal-700); letter-spacing:.1em; padding-top:4px; }
.value-row h3 { font-size: 21px; margin-bottom: 8px; }
.value-row p { color: var(--muted); font-size: 15px; }

/* ---------- timeline ---------- */
.tl { display: grid; gap: 0; }
.tl-item { display: grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 24px 0; border-top: 1px solid rgba(15,110,86,.14); position: relative; }
.tl-item .yr { font-family: var(--mono); font-weight: 700; color: var(--teal-700); font-size: 17px; }
.tl-item h3 { font-size: 18px; margin-bottom: 6px; }
.tl-item p { color: var(--muted); font-size: 14.5px; }

/* ---------- academy course list ---------- */
.course {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px;
  padding: 24px; border: var(--glass-border); border-radius: var(--r-md); background: var(--glass);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  transition: border-color .3s, transform .3s var(--ease);
}
.course:hover { border-color: var(--teal-300); transform: translateX(4px); }
.course .no { font-family: var(--mono); font-size: 20px; font-weight: 700; color: var(--teal-300); }
.course h3 { font-size: 18px; margin-bottom: 5px; }
.course p { font-size: 13.5px; color: var(--muted); }
.course .meta { font-family: var(--mono); font-size: 12px; color: var(--faint); text-align: right; }

/* ============================================================
   Form (join / partner)
   ============================================================ */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--ink-2); }
.field input, .field select, .field textarea {
  font-family: var(--sans); font-size: 15px; padding: 12px 14px;
  border: 1px solid rgba(15,110,86,.2); border-radius: var(--r-sm); background: rgba(255,255,255,.7);
  color: var(--ink); transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(94,202,165,.28);
}
.field textarea { resize: vertical; min-height: 120px; }

/* benefit list */
.benefit { display: flex; gap: 14px; padding: 18px 0; border-top: 1px solid rgba(15,110,86,.14); }
.benefit .ck { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--teal-50); color: var(--teal-700); display: grid; place-items: center; }
.benefit h3 { font-size: 16px; margin-bottom: 4px; }
.benefit p { font-size: 14px; color: var(--muted); }

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: linear-gradient(180deg, var(--teal-900), #032c25); color: #cfe6dc; padding: clamp(50px,6vw,72px) 0 34px; margin-top: 0; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 34px; }
.site-footer .brand .zh { color: #fff; }
.site-footer .brand .mark { background: linear-gradient(135deg, var(--teal-600), var(--teal-500)); }
.foot-about { color: #9fc4b6; font-size: 14px; max-width: 34ch; margin-top: 16px; }
.foot-col h4 { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--teal-300); margin-bottom: 16px; }
.foot-col a { display: block; color: #b7d6c9; font-size: 14px; padding: 6px 0; transition: color .2s; }
.foot-col a:hover { color: #fff; }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; border-top: 1px solid rgba(255,255,255,.1); margin-top: 44px; padding-top: 24px; font-size: 13px; color: #7fa899; }
.foot-bottom .mono { font-family: var(--mono); letter-spacing: .05em; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { order: -1; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid .stat:nth-child(2) { border-right: 0; }
  .stats-grid .stat { border-bottom: 1px solid rgba(15,110,86,.10); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column; align-items: flex-start;
    background: rgba(255,255,255,.82); padding: 20px var(--gut); gap: 4px; border-bottom: 1px solid rgba(15,110,86,.12);
    backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px);
    transform: translateY(-140%); transition: transform .35s var(--ease); box-shadow: 0 20px 40px -20px rgba(0,0,0,.15);
  }
  .nav-links.open { transform: none; }
  .nav-links a { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--line-2); }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4, .form-grid { grid-template-columns: 1fr; }
  .value-row, .tl-item { grid-template-columns: 1fr; gap: 8px; }
  .course { grid-template-columns: auto 1fr; }
  .course .meta { grid-column: 2; text-align: left; }
  .foot-grid { grid-template-columns: 1fr; }
  .hero-meta { gap: 22px; }
}