/* ============================================================
   磁力猫BT - 全局样式
   主题：深空科技风 / 磁青渐变
   ============================================================ */
:root{
  --bg-0:#070b16;
  --bg-1:#0b1224;
  --bg-2:#101a33;
  --card:#111c38;
  --card-2:#0e1830;
  --line:rgba(120,160,255,.14);
  --line-strong:rgba(120,160,255,.28);
  --txt:#e8eefc;
  --txt-2:#9fb0d4;
  --txt-3:#6b7ca3;
  --brand:#22d3ee;
  --brand-2:#3b82f6;
  --accent:#a78bfa;
  --grad:linear-gradient(120deg,#22d3ee 0%,#3b82f6 55%,#a78bfa 100%);
  --radius:16px;
  --shadow:0 18px 50px rgba(3,8,24,.55);
  --shadow-sm:0 8px 24px rgba(3,8,24,.4);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--bg-0);
  color:var(--txt);
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s ease}
ul,ol{list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
::selection{background:rgba(34,211,238,.35);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-1)}
::-webkit-scrollbar-thumb{background:#22335f;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:#2e457e}

/* ---------- 布局容器 ---------- */
.container{width:min(1200px,92%);margin:0 auto}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 56px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brand);font-weight:600;margin-bottom:14px;
}
.eyebrow::before,.eyebrow::after{content:"";width:26px;height:1px;background:var(--grad)}
.section-head h2{font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.3;margin-bottom:16px}
.section-head h2 .grad-text,.grad-text{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.section-head p{color:var(--txt-2);font-size:16px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:1000;
  background:rgba(7,11,22,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,background .3s ease;
}
.site-header.scrolled{background:rgba(7,11,22,.92);border-bottom-color:var(--line)}
.navbar{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:.5px}
.brand .logo{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--grad);color:#04121c;font-size:20px;font-weight:900;
  box-shadow:0 6px 18px rgba(34,211,238,.35);
}
.brand span em{font-style:normal;color:var(--brand)}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  padding:9px 16px;border-radius:10px;font-size:15px;color:var(--txt-2);
  position:relative;transition:color .25s ease,background .25s ease;
}
.nav-menu a:hover{color:var(--txt);background:rgba(120,160,255,.08)}
.nav-menu a.active{color:var(--brand);font-weight:600}
.nav-menu a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;border-radius:2px;background:var(--grad);
}
.nav-cta{
  margin-left:10px;padding:9px 20px;border-radius:999px;
  background:var(--grad);color:#04121c !important;font-weight:700;font-size:14px;
  box-shadow:0 8px 22px rgba(59,130,246,.35);
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(59,130,246,.5)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--txt);margin:5px 0;border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:140px 0 80px;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.35}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(900px 500px at 15% 20%,rgba(34,211,238,.16),transparent 60%),
    radial-gradient(800px 500px at 85% 75%,rgba(167,139,250,.14),transparent 60%),
    linear-gradient(180deg,rgba(7,11,22,.55) 0%,rgba(7,11,22,.86) 70%,var(--bg-0) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;z-index:-1;opacity:.14;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(closest-side at 50% 40%,#000,transparent);
  -webkit-mask-image:radial-gradient(closest-side at 50% 40%,#000,transparent);
}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(34,211,238,.08);
  font-size:13px;color:var(--brand);margin-bottom:24px;font-weight:600;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(34,211,238,.5)}50%{box-shadow:0 0 0 7px rgba(34,211,238,0)}}
.hero h1{font-size:clamp(34px,5.4vw,58px);font-weight:900;line-height:1.22;letter-spacing:.5px;margin-bottom:22px}
.hero p.lead{font-size:17px;color:var(--txt-2);max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:44px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:999px;
  font-weight:700;font-size:15px;cursor:pointer;border:0;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease;
}
.btn-primary{background:var(--grad);color:#04121c;box-shadow:0 10px 28px rgba(34,211,238,.32)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(34,211,238,.45)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--txt);background:rgba(120,160,255,.06)}
.btn-ghost:hover{background:rgba(120,160,255,.14);transform:translateY(-3px)}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stats .stat b{display:block;font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .stat span{font-size:13px;color:var(--txt-3)}
.hero-visual{position:relative}
.hero-visual .frame{
  border-radius:22px;overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow);transform:rotate(2deg);
  animation:floaty 6s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:rotate(2deg) translateY(0)}50%{transform:rotate(2deg) translateY(-14px)}}
.hero-visual .chip{
  position:absolute;padding:12px 18px;border-radius:14px;background:rgba(14,24,48,.9);
  border:1px solid var(--line-strong);backdrop-filter:blur(8px);font-size:13px;
  box-shadow:var(--shadow-sm);animation:floaty 5s ease-in-out infinite;
}
.chip b{color:var(--brand)}
.chip-1{top:-18px;left:-24px;animation-delay:.4s}
.chip-2{bottom:-16px;right:-18px;animation-delay:1.1s}

/* ---------- 跑马灯条 ---------- */
.marquee{
  border-block:1px solid var(--line);background:rgba(14,24,48,.5);
  overflow:hidden;white-space:nowrap;padding:16px 0;
}
.marquee-track{display:inline-flex;gap:56px;animation:scrollX 26s linear infinite;padding-left:56px}
.marquee-track span{display:inline-flex;align-items:center;gap:10px;color:var(--txt-2);font-size:14px;letter-spacing:.08em}
.marquee-track i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}
@keyframes scrollX{to{transform:translateX(-50%)}}

/* ---------- 卡片与网格 ---------- */
.grid{display:grid;gap:24px}
.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:linear-gradient(180deg,var(--card),var(--card-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
  position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .35s ease;
}
.card:hover{transform:translateY(-8px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.card:hover::before{transform:scaleX(1)}
.card .icon{
  width:56px;height:56px;border-radius:14px;display:grid;place-items:center;font-size:26px;
  background:rgba(34,211,238,.1);border:1px solid var(--line-strong);margin-bottom:20px;
}
.card h3{font-size:19px;font-weight:700;margin-bottom:12px}
.card p{color:var(--txt-2);font-size:14.5px}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--brand);font-size:14px;font-weight:600}
.card .more:hover{gap:10px}

/* ---------- 分区底色 ---------- */
.band{background:linear-gradient(180deg,var(--bg-1),var(--bg-0))}
.band-2{background:var(--bg-1)}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .media{border-radius:20px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow)}
.split h2{font-size:clamp(24px,3.4vw,36px);font-weight:800;margin-bottom:18px;line-height:1.35}
.split .desc{color:var(--txt-2);margin-bottom:24px}
.check-list li{display:flex;gap:12px;margin-bottom:14px;color:var(--txt-2);font-size:15px}
.check-list li::before{
  content:"✓";flex:0 0 24px;height:24px;border-radius:50%;display:grid;place-items:center;
  background:rgba(34,211,238,.12);color:var(--brand);font-weight:800;font-size:13px;margin-top:2px;
}

/* ---------- 步骤流程 ---------- */
.steps{counter-reset:step;position:relative}
.step{display:flex;gap:22px;padding:26px 0;border-bottom:1px dashed var(--line)}
.step:last-child{border-bottom:0}
.step::before{
  counter-increment:step;content:"0" counter(step);
  flex:0 0 64px;height:64px;border-radius:18px;display:grid;place-items:center;
  font-size:22px;font-weight:900;background:var(--grad);color:#04121c;
}
.step h3{font-size:18px;margin-bottom:6px}
.step p{color:var(--txt-2);font-size:14.5px}

/* ---------- 数据表 / 对比 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
th,td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line)}
th{background:rgba(34,211,238,.07);color:var(--brand);font-weight:700;white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr{transition:background .2s ease}
tbody tr:hover{background:rgba(120,160,255,.05)}
.tag{display:inline-block;padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600}
.tag-yes{background:rgba(34,211,238,.14);color:var(--brand)}
.tag-no{background:rgba(148,163,184,.12);color:var(--txt-3)}

/* ---------- 定价 ---------- */
.price-card{display:flex;flex-direction:column;text-align:center}
.price-card.featured{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),var(--shadow);transform:scale(1.03)}
.price-card .plan{font-size:14px;letter-spacing:.2em;color:var(--txt-3);text-transform:uppercase}
.price-card .amount{font-size:44px;font-weight:900;margin:10px 0 4px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.price-card .cycle{color:var(--txt-3);font-size:13px;margin-bottom:22px}
.price-card ul{text-align:left;margin-bottom:26px;flex:1}
.price-card ul li{padding:8px 0;color:var(--txt-2);font-size:14px;border-bottom:1px dashed var(--line)}
.price-card ul li::before{content:"✓ ";color:var(--brand);font-weight:800}
.badge-rec{position:absolute;top:16px;right:16px;background:var(--grad);color:#04121c;font-size:12px;font-weight:800;padding:4px 12px;border-radius:999px}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:14px;margin-bottom:14px;background:var(--card-2);overflow:hidden}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:20px 24px;background:none;border:0;color:var(--txt);font-size:16px;font-weight:600;
  cursor:pointer;text-align:left;
}
.faq-q .arrow{flex:0 0 auto;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand);transition:transform .3s ease;font-size:14px}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 24px 22px;color:var(--txt-2);font-size:14.5px}

/* ---------- 新闻 ---------- */
.news-card{display:flex;flex-direction:column;padding:0;overflow:hidden}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .thumb img{transform:scale(1.06)}
.news-card .body{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;gap:14px;font-size:12.5px;color:var(--txt-3);margin-bottom:12px}
.news-meta .cat{color:var(--brand);font-weight:600}
.news-card h3{font-size:18px;line-height:1.5;margin-bottom:10px}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{color:var(--txt-2);font-size:14px;flex:1}
.pagination{display:flex;justify-content:center;gap:10px;margin-top:48px}
.pagination a{
  min-width:42px;height:42px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);color:var(--txt-2);font-size:14px;transition:.25s;
}
.pagination a:hover,.pagination a.current{border-color:var(--brand);color:var(--brand);background:rgba(34,211,238,.08)}

/* ---------- 文章详情 ---------- */
.article-wrap{display:grid;grid-template-columns:1fr 320px;gap:48px;align-items:start}
.article{background:var(--card-2);border:1px solid var(--line);border-radius:var(--radius);padding:44px 48px}
.article h1{font-size:clamp(24px,3.6vw,34px);line-height:1.4;margin-bottom:18px}
.article .news-meta{margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.article .cover{border-radius:14px;overflow:hidden;margin-bottom:30px}
.article h2{font-size:22px;margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--brand)}
.article h3{font-size:17px;margin:24px 0 10px;color:var(--brand)}
.article p{color:var(--txt-2);margin-bottom:16px;font-size:15.5px}
.article blockquote{
  margin:24px 0;padding:20px 24px;border-left:4px solid var(--accent);
  background:rgba(167,139,250,.08);border-radius:0 12px 12px 0;color:var(--txt-2);font-size:14.5px;
}
.sidebar .card{margin-bottom:24px;padding:26px}
.sidebar h3{font-size:17px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.side-list li{margin-bottom:14px}
.side-list a{display:flex;gap:12px;color:var(--txt-2);font-size:14px;line-height:1.5}
.side-list a:hover{color:var(--brand)}
.side-list img{width:84px;height:60px;object-fit:cover;border-radius:8px;flex:0 0 auto}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:36px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand),var(--accent))}
.timeline-item{position:relative;padding-bottom:40px}
.timeline-item::before{
  content:"";position:absolute;left:-34px;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--bg-0);border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(34,211,238,.15);
}
.timeline-item .year{color:var(--brand);font-weight:800;font-size:15px;letter-spacing:.08em;margin-bottom:6px}
.timeline-item h3{font-size:18px;margin-bottom:8px}
.timeline-item p{color:var(--txt-2);font-size:14.5px}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-grid .full{grid-column:1/-1}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--txt-2)}
.field input,.field textarea,.field select{
  width:100%;padding:14px 16px;border-radius:12px;border:1px solid var(--line);
  background:rgba(7,11,22,.6);color:var(--txt);outline:none;transition:border-color .25s ease,box-shadow .25s ease;
}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,211,238,.15);
}
.field textarea{resize:vertical;min-height:140px}
.form-note{font-size:12.5px;color:var(--txt-3);margin-top:14px}
.form-msg{margin-top:14px;font-size:14px;color:var(--brand);display:none}

/* ---------- 信息块 ---------- */
.info-item{display:flex;gap:16px;margin-bottom:22px}
.info-item .icon{flex:0 0 48px;width:48px;height:48px;border-radius:12px;display:grid;place-items:center;
  background:rgba(34,211,238,.1);border:1px solid var(--line-strong);font-size:20px;margin-bottom:0}
.info-item h4{font-size:15px;margin-bottom:4px}
.info-item p{color:var(--txt-2);font-size:14px}

/* ---------- CTA ---------- */
.cta-box{
  position:relative;border-radius:26px;overflow:hidden;padding:72px 48px;text-align:center;
  background:linear-gradient(120deg,#0d2b45,#131a3d 55%,#241b4d);
  border:1px solid var(--line-strong);
}
.cta-box::before{
  content:"";position:absolute;inset:-40%;
  background:radial-gradient(circle at 30% 30%,rgba(34,211,238,.22),transparent 45%),
             radial-gradient(circle at 75% 70%,rgba(167,139,250,.2),transparent 45%);
  animation:slowSpin 16s linear infinite;
}
@keyframes slowSpin{to{transform:rotate(360deg)}}
.cta-box>*{position:relative}
.cta-box h2{font-size:clamp(26px,4vw,40px);font-weight:900;margin-bottom:16px}
.cta-box p{color:var(--txt-2);max-width:620px;margin:0 auto 32px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-grid h4{font-size:15px;margin-bottom:18px;letter-spacing:.06em}
.footer-grid ul li{margin-bottom:10px}
.footer-grid ul a{color:var(--txt-2);font-size:14px}
.footer-grid ul a:hover{color:var(--brand)}
.footer-about{color:var(--txt-2);font-size:14px;margin:14px 0 18px;max-width:320px}
.footer-contact li{display:flex;gap:10px;color:var(--txt-2);font-size:14px;margin-bottom:12px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;color:var(--txt-3);font-size:13px;
}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:900;width:46px;height:46px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(14,24,48,.9);color:var(--brand);
  cursor:pointer;display:grid;place-items:center;font-size:18px;opacity:0;pointer-events:none;
  transform:translateY(14px);transition:.3s ease;
}
.back-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.back-top:hover{background:var(--grad);color:#04121c}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.12s}
.reveal[data-delay="2"]{transition-delay:.24s}
.reveal[data-delay="3"]{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ---------- 面包屑 ---------- */
.page-hero{padding:150px 0 70px;position:relative;overflow:hidden;background:var(--bg-1)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 340px at 20% 0%,rgba(34,211,238,.16),transparent 60%),
             radial-gradient(600px 300px at 85% 100%,rgba(167,139,250,.12),transparent 60%);
}
.page-hero .container{position:relative}
.breadcrumb{font-size:13.5px;color:var(--txt-3);margin-bottom:16px}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{margin:0 8px;opacity:.5}
.page-hero h1{font-size:clamp(28px,4.6vw,44px);font-weight:900;margin-bottom:14px}
.page-hero p{color:var(--txt-2);max-width:640px}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:560px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .article-wrap{grid-template-columns:1fr}
  .price-card.featured{transform:none}
}
@media (max-width:640px){
  .section{padding:68px 0}
  .grid-3,.grid-2,.grid-4{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .article{padding:28px 22px}
  .cta-box{padding:52px 24px}
  .hero{padding-top:120px}
  .hero-stats{gap:22px}
  /* 移动端导航 */
  .nav-toggle{display:block}
  .nav-menu{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(7,11,22,.97);backdrop-filter:blur(16px);padding:16px 5%;
    border-bottom:1px solid var(--line);max-height:0;overflow:hidden;padding-top:0;padding-bottom:0;
    transition:max-height .35s ease,padding .35s ease;
  }
  .nav-menu.open{max-height:70vh;padding:16px 5% 24px}
  .nav-menu a{padding:13px 16px}
  .nav-cta{margin:8px 16px 0;text-align:center}
}