*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand:#1a1a2e;
  --brand-light:#16213e;
  --accent:#e94560;
  --accent-soft:#ff6b81;
  --accent-glow:rgba(233,69,96,.35);
  --bg:#f7f7fb;
  --bg-alt:#eef0f7;
  --card:#ffffff;
  --card-glass:rgba(255,255,255,.72);
  --text:#22223b;
  --text-muted:#5c5c7a;
  --border:#e6e6f0;
  --border-glass:rgba(255,255,255,.55);
  --shadow:0 8px 30px rgba(26,26,46,.08);
  --shadow-lg:0 18px 50px rgba(26,26,46,.14);
  --radius:14px;
  --radius-lg:20px;
  --max:1180px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  --grad-hero:linear-gradient(135deg,#1a1a2e 0%,#16213e 55%,#0f3460 100%);
  --grad-accent:linear-gradient(135deg,#e94560 0%,#ff6b81 100%);
  --grad-soft:linear-gradient(135deg,rgba(233,69,96,.15),rgba(233,69,96,.04));
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  transition:background .35s ease,color .35s ease;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s ease}
ul{list-style:none}
button{font-family:inherit}
.container{max-width:var(--max);margin:0 auto;padding:0 20px;width:100%}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
::selection{background:var(--accent);color:#fff}

/* ============ 吸顶导航（毛玻璃） ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(26,26,46,.82);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:box-shadow .35s ease,background .35s ease;
}
.site-header.scrolled{
  box-shadow:0 8px 30px rgba(0,0,0,.28);
  background:rgba(22,22,40,.92);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:12px 0;
}
.logo{
  display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;
  font-size:20px;letter-spacing:.5px;flex-shrink:0;
}
.logo svg{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  transition:transform .4s cubic-bezier(.34,1.56,.64,1),box-shadow .35s ease;
  box-shadow:0 4px 14px rgba(233,69,96,.4);
}
.logo:hover svg{transform:rotate(-8deg) scale(1.08);box-shadow:0 8px 22px rgba(233,69,96,.6)}
.nav-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-links a{
  color:rgba(255,255,255,.82);font-size:14.5px;padding:8px 12px;border-radius:9px;
  transition:color .25s,background .25s,transform .25s;white-space:nowrap;position:relative;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--grad-accent);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .3s cubic-bezier(.4,0,.2,1);
}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:#fff;background:rgba(233,69,96,.22)}
.nav-links a:hover::after,.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
.nav-tools{display:flex;align-items:center;gap:8px}
.search-box{
  display:flex;align-items:center;background:rgba(255,255,255,.1);
  border-radius:30px;padding:4px 6px 4px 14px;
  border:1px solid rgba(255,255,255,.14);
  transition:border-color .3s,background .3s,box-shadow .3s;
}
.search-box:focus-within{
  border-color:rgba(233,69,96,.6);background:rgba(255,255,255,.16);
  box-shadow:0 0 0 3px rgba(233,69,96,.18);
}
.search-box input{
  background:transparent;border:none;outline:none;color:#fff;
  font-size:13.5px;width:130px;
}
.search-box input::placeholder{color:rgba(255,255,255,.5)}
.search-box button{
  background:var(--grad-accent);border:none;color:#fff;border-radius:50%;
  width:30px;height:30px;display:grid;place-items:center;cursor:pointer;
  transition:transform .25s,box-shadow .25s;flex-shrink:0;
}
.search-box button:hover{transform:scale(1.1);box-shadow:0 4px 14px var(--accent-glow)}
.icon-btn{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);
  color:#fff;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  cursor:pointer;transition:background .25s,transform .25s,box-shadow .25s;flex-shrink:0;
}
.icon-btn:hover{background:rgba(233,69,96,.45);transform:translateY(-2px);box-shadow:0 6px 18px var(--accent-glow)}
.menu-toggle{display:none;background:none;border:none;color:#fff;cursor:pointer;padding:6px}
.menu-toggle svg{width:26px;height:26px}

/* ============ 暗黑模式 ============ */
body.dark{
  --bg:#0f0f1a;
  --bg-alt:#14141f;
  --card:#1a1a2e;
  --card-glass:rgba(26,26,46,.72);
  --text:#e8e8f0;
  --text-muted:#a0a0c0;
  --border:#2a2a44;
  --border-glass:rgba(255,255,255,.08);
  --shadow:0 8px 30px rgba(0,0,0,.4);
  --shadow-lg:0 18px 50px rgba(0,0,0,.55);
  --grad-soft:linear-gradient(135deg,rgba(233,69,96,.2),rgba(233,69,96,.05));
}
body.dark .site-header{background:rgba(15,15,26,.85)}
body.dark .site-header.scrolled{background:rgba(15,15,26,.96)}
body.dark .hero{background:linear-gradient(135deg,#0f0f1a 0%,#1a1a2e 55%,#0f3460 100%)}
body.dark .breadcrumb{background:var(--card)}
body.dark .card,
body.dark .article-card,
body.dark .faq-item,
body.dark .howto-step,
body.dark .contact-card,
body.dark .team-card,
body.dark .anchor-nav{background:var(--card);border-color:var(--border)}

/* ============ Hero 渐变 Banner ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-hero);
  color:#fff;padding:64px 0 76px;
  isolation:isolate;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(circle at 82% 18%,rgba(233,69,96,.28),transparent 52%),
    radial-gradient(circle at 12% 88%,rgba(15,52,96,.55),transparent 55%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(255,255,255,.05),transparent 30%);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;display:grid;
  grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.hero h1{
  font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;
  margin-bottom:18px;letter-spacing:-.5px;
  animation:fadeUp .8s cubic-bezier(.22,1,.36,1) both;
}
.hero h1 .hl{
  background:var(--grad-accent);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:var(--accent-soft);
}
.hero p.lead{
  font-size:17px;color:rgba(255,255,255,.85);margin-bottom:26px;max-width:620px;
  animation:fadeUp .8s .1s cubic-bezier(.22,1,.36,1) both;
}
.hero-actions{
  display:flex;gap:14px;flex-wrap:wrap;
  animation:fadeUp .8s .2s cubic-bezier(.22,1,.36,1) both;
}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:30px;
  font-weight:600;font-size:15px;cursor:pointer;border:none;
  transition:transform .28s cubic-bezier(.34,1.56,.64,1),box-shadow .28s,background .28s;
  position:relative;overflow:hidden;
}
.btn svg{transition:transform .3s cubic-bezier(.4,0,.2,1)}
.btn-primary{background:var(--grad-accent);color:#fff;box-shadow:0 8px 24px var(--accent-glow)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(233,69,96,.5)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{
  background:rgba(255,255,255,.1);color:#fff;
  border:1px solid rgba(255,255,255,.25);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-3px)}
.hero-stats{
  display:flex;gap:28px;margin-top:34px;flex-wrap:wrap;
  animation:fadeUp .8s .3s cubic-bezier(.22,1,.36,1) both;
}
.stat-item{display:flex;flex-direction:column}
.stat-num{
  font-size:28px;font-weight:800;color:var(--accent-soft);
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.stat-label{font-size:13px;color:rgba(255,255,255,.7)}

/* ============ 轮播 ============ */
.slider{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.12);
  animation:fadeUp .9s .15s cubic-bezier(.22,1,.36,1) both;
}
.slides{display:flex;transition:transform .6s cubic-bezier(.65,0,.35,1)}
.slide{min-width:100%;position:relative}
.slide svg{width:100%;height:auto;display:block}
.slider-dots{
  position:absolute;bottom:14px;left:50%;transform:translateX(-50%);
  display:flex;gap:8px;z-index:5;
}
.slider-dots button{
  width:9px;height:9px;border-radius:50%;border:none;
  background:rgba(255,255,255,.5);cursor:pointer;
  transition:width .35s cubic-bezier(.4,0,.2,1),background .3s;padding:0;
}
.slider-dots button.active{background:var(--accent);width:24px;border-radius:6px}
.slider-dots button:hover{background:rgba(255,255,255,.85)}

/* ============ 通用 section ============ */
section{padding:64px 0;position:relative}
.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.section-head h2{
  font-size:clamp(24px,3vw,34px);font-weight:800;
  margin-bottom:14px;letter-spacing:-.3px;
}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;color:var(--accent);
  background:var(--grad-soft);padding:5px 14px;border-radius:20px;margin-bottom:14px;
  border:1px solid rgba(233,69,96,.18);
}
.section-head p{color:var(--text-muted);font-size:16px}

/* ============ 面包屑 ============ */
.breadcrumb{
  background:var(--card);border-bottom:1px solid var(--border);
  padding:14px 0;font-size:14px;
  transition:background .35s,border-color .35s;
}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--text-muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--border)}
.breadcrumb a:hover{color:var(--accent)}

/* ============ 锚点导航（毛玻璃） ============ */
.anchor-nav{
  background:var(--card-glass);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 22px;margin:28px 0 0;
  display:flex;flex-wrap:wrap;gap:10px 22px;
  box-shadow:var(--shadow);
  transition:background .35s,border-color .35s;
}
.anchor-nav a{
  font-size:14px;color:var(--text-muted);font-weight:500;
  transition:color .2s,transform .2s;display:inline-block;
}
.anchor-nav a:hover{color:var(--accent);transform:translateX(3px)}

/* ============ 卡片网格 ============ */
.grid{display:grid;gap:26px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s,border-color .35s,background .35s;
  position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .4s cubic-bezier(.4,0,.2,1);
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(233,69,96,.28);
}
.card:hover::before{transform:scaleX(1)}
.card h3{font-size:19px;font-weight:700;margin-bottom:12px}
.card p{color:var(--text-muted);font-size:15px}
.card .icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  margin-bottom:18px;background:var(--grad-soft);color:var(--accent);
  transition:transform .4s cubic-bezier(.34,1.56,.64,1),box-shadow .35s;
}
.card:hover .icon{transform:scale(1.08) rotate(-4deg);box-shadow:0 8px 22px rgba(233,69,96,.22)}
.card .icon svg{width:26px;height:26px}

/* ============ 文章卡片 ============ */
.article-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s,border-color .35s,background .35s;
  display:flex;flex-direction:column;position:relative;overflow:hidden;
}
.article-card::after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:3px;
  background:var(--grad-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .4s cubic-bezier(.4,0,.2,1);
}
.article-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(233,69,96,.28);
}
.article-card:hover::after{transform:scaleX(1)}
.article-meta{
  font-size:13px;color:var(--text-muted);margin-bottom:10px;
  display:flex;gap:14px;flex-wrap:wrap;
}
.article-meta span:first-child::before{
  content:"🕐";margin-right:5px;font-size:12px;
}
.article-card h3{
  font-size:17.5px;font-weight:700;margin-bottom:10px;line-height:1.45;
  transition:color .25s;
}
.article-card:hover h3{color:var(--accent)}
.article-card p{font-size:14.5px;color:var(--text-muted);flex:1;margin-bottom:16px}
.read-more{
  font-size:14px;font-weight:600;color:var(--accent);
  display:inline-flex;align-items:center;gap:6px;
  transition:gap .3s cubic-bezier(.4,0,.2,1);
}
.read-more:hover{gap:12px}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:box-shadow .3s,border-color .3s,background .35s;
}
.faq-item:hover{border-color:rgba(233,69,96,.28);box-shadow:var(--shadow-lg)}
.faq-item.open{border-color:rgba(233,69,96,.4)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;padding:20px 24px;
  font-size:16px;font-weight:600;color:var(--text);cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  transition:color .25s;line-height:1.5;
}
.faq-q:hover{color:var(--accent)}
.faq-q .chev{
  transition:transform .35s cubic-bezier(.4,0,.2,1);flex:0 0 20px;
  color:var(--accent);font-size:14px;
}
.faq-item.open .faq-q .chev{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .45s cubic-bezier(.4,0,.2,1),padding .35s;
  padding:0 24px;
}
.faq-item.open .faq-a{max-height:600px;padding-bottom:22px}
.faq-a p{color:var(--text-muted);font-size:15px}

/* ============ HowTo ============ */
.howto-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.howto-step{
  display:flex;gap:20px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);
  align-items:flex-start;
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s,border-color .35s,background .35s;
}
.howto-step:hover{
  transform:translateX(6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(233,69,96,.28);
}
.step-num{
  flex:0 0 44px;width:44px;height:44px;border-radius:50%;
  background:var(--grad-accent);color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:18px;
  box-shadow:0 6px 18px var(--accent-glow);
  transition:transform .4s cubic-bezier(.34,1.56,.64,1);
}
.howto-step:hover .step-num{transform:scale(1.1) rotate(-6deg)}
.howto-step h4{font-size:17px;font-weight:700;margin-bottom:8px}
.howto-step p{color:var(--text-muted);font-size:15px}

/* ============ 联系 ============ */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);
  text-align:center;
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s,border-color .35s,background .35s;
}
.contact-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(233,69,96,.28);
}
.contact-card .icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:var(--grad-soft);display:grid;place-items:center;color:var(--accent);
  transition:transform .4s cubic-bezier(.34,1.56,.64,1),box-shadow .35s;
}
.contact-card:hover .icon{transform:scale(1.1);box-shadow:0 8px 22px rgba(233,69,96,.22)}
.contact-card h3{font-size:17px;margin-bottom:8px}
.contact-card p{font-size:14.5px;color:var(--text-muted)}
.contact-card p+p{margin-top:4px}

/* ============ 团队 ============ */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.team-card{
  text-align:center;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px 20px;box-shadow:var(--shadow);
  transition:transform .35s cubic-bezier(.22,1,.36,1),box-shadow .35s,border-color .35s,background .35s;
}
.team-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(233,69,96,.28);
}
.team-card .avatar{
  width:80px;height:80px;margin:0 auto 16px;border-radius:50%;
  overflow:hidden;background:#e94560;
  transition:transform .4s cubic-bezier(.34,1.56,.64,1),box-shadow .35s;
  box-shadow:0 6px 18px rgba(233,69,96,.25);
}
.team-card:hover .avatar{transform:scale(1.08);box-shadow:0 10px 28px rgba(233,69,96,.4)}
.team-card .avatar svg{width:100%;height:100%}
.team-card h4{font-size:16px;margin-bottom:4px}
.team-card span{font-size:13px;color:var(--text-muted)}

/* ============ 页脚 ============ */
footer{
  background:#12121f;color:rgba(255,255,255,.75);
  padding:56px 0 24px;font-size:14px;
  position:relative;overflow:hidden;
}
footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-accent);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:36px;margin-bottom:40px;
}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-grid ul li{margin-bottom:10px}
.footer-grid a{
  color:rgba(255,255,255,.72);transition:color .25s,padding-left .25s;
  display:inline-block;
}
.footer-grid a:hover{color:var(--accent-soft);padding-left:4px}
.footer-brand p{margin-bottom:14px;font-size:13.5px;line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:22px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a:hover{color:var(--accent-soft)}

/* ============ 返回顶部 ============ */
#backTop{
  position:fixed;right:24px;bottom:28px;z-index:900;
  width:48px;height:48px;border-radius:50%;
  background:var(--grad-accent);color:#fff;border:none;cursor:pointer;
  display:grid;place-items:center;
  box-shadow:0 10px 30px var(--accent-glow);
  opacity:0;pointer-events:none;
  transform:translateY(20px) scale(.8);
  transition:opacity .35s,transform .35s cubic-bezier(.34,1.56,.64,1),box-shadow .3s;
}
#backTop.show{opacity:1;pointer-events:auto;transform:translateY(0) scale(1)}
#backTop:hover{
  transform:translateY(-5px) scale(1.06);
  box-shadow:0 16px 40px rgba(233,69,96,.6);
}

/* ============ 滚动动画 ============ */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1);
  will-change:opacity,transform;
}
.reveal.visible{opacity:1;transform:none}
.grid .reveal:nth-child(1){transition-delay:.02s}
.grid .reveal:nth-child(2){transition-delay:.08s}
.grid .reveal:nth-child(3){transition-delay:.14s}
.grid .reveal:nth-child(4){transition-delay:.2s}
.grid .reveal:nth-child(5){transition-delay:.26s}
.grid .reveal:nth-child(6){transition-delay:.32s}
.grid .reveal:nth-child(7){transition-delay:.38s}
.grid .reveal:nth-child(8){transition-delay:.44s}
.grid .reveal:nth-child(9){transition-delay:.5s}
.grid .reveal:nth-child(10){transition-delay:.56s}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(26px)}
  to{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero{padding:48px 0 60px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .contact-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  body{font-size:15.5px}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:rgba(26,26,46,.98);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    flex-direction:column;padding:16px 20px;gap:4px;
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 16px 40px rgba(0,0,0,.4);
  }
  .nav-links.open{display:flex;animation:fadeUp .35s ease both}
  .nav-links a{width:100%;padding:11px 14px}
  .nav-links a::after{display:none}
  .menu-toggle{display:block}
  .search-box{display:none}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-stats{gap:20px}
  .stat-num{font-size:24px}
  section{padding:48px 0}
  .anchor-nav{display:none}
  .card,.article-card,.howto-step,.contact-card,.team-card{padding:22px}
  .hero{padding:40px 0 52px}
  .section-head{margin-bottom:34px}
  .howto-step{flex-direction:column;gap:14px}
  .howto-step:hover{transform:translateY(-4px)}
  #backTop{right:16px;bottom:20px;width:44px;height:44px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media(max-width:420px){
  .container{padding:0 16px}
  .btn{padding:11px 20px;font-size:14px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1;justify-content:center}
}

/* ============ 无障碍与动效偏好 ============ */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
button:focus-visible,a:focus-visible{outline-offset:3px}

/* ============ 打印 ============ */
@media print{
  .site-header,.anchor-nav,#backTop,footer,.slider-dots{display:none}
  body{background:#fff;color:#000}
  .card,.article-card{box-shadow:none;border:1px solid #ccc}
}