/* ===== 元宇宙100分 meta100 · 样式 ===== */
:root{
  --bg:#F7F8FC;
  --bg-soft:#FFFFFF;
  --surface:#FFFFFF;
  --ink:#0F172A;
  --ink-soft:#475569;
  --ink-faint:#94A3B8;
  --line:#E6E8F0;
  --brand-1:#6366F1;
  --brand-2:#8B5CF6;
  --brand-3:#06B6D4;
  --grad:linear-gradient(120deg,#6366F1 0%,#8B5CF6 50%,#06B6D4 100%);
  --grad-soft:linear-gradient(120deg,rgba(99,102,241,.12),rgba(139,92,246,.12),rgba(6,182,212,.12));
  --shadow:0 18px 50px -20px rgba(79,70,229,.35);
  --radius:20px;
  --maxw:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:600;font-size:15px;
  cursor:pointer;border:1px solid transparent;transition:.25s;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 60px -18px rgba(79,70,229,.5)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-1)}

/* ===== 顶部导航 ===== */
header.nav{position:sticky;top:0;z-index:50;background:rgba(247,248,252,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:.5px}
.brand img{width:38px;height:38px;border-radius:11px}
.brand small{display:block;font-size:11px;font-weight:600;color:var(--ink-faint);letter-spacing:2px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:15px;color:var(--ink-soft);font-weight:500;transition:.2s;position:relative}
.nav-links a:hover{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--grad);transition:.25s}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:12px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;padding:90px 0 70px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-bg::before,.hero-bg::after{content:"";position:absolute;border-radius:50%;filter:blur(70px);opacity:.5}
.hero-bg::before{width:520px;height:520px;background:radial-gradient(circle,#8B5CF6,transparent 70%);top:-160px;right:-120px}
.hero-bg::after{width:460px;height:460px;background:radial-gradient(circle,#06B6D4,transparent 70%);bottom:-180px;left:-140px}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--ink-soft);box-shadow:0 6px 18px -12px rgba(0,0,0,.2)}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad)}
.hero h1{font-size:62px;line-height:1.05;font-weight:850;margin:20px 0 6px;letter-spacing:-1px}
.hero h1 .en{display:block;font-size:22px;font-weight:700;letter-spacing:6px;color:var(--ink-faint);margin-top:10px}
.hero .lead{font-size:18px;color:var(--ink-soft);margin:18px 0 28px;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:42px}
.hero-stats .num{font-size:26px;font-weight:800}
.hero-stats .lbl{font-size:13px;color:var(--ink-faint)}

/* IP 卡 */
.ip-card{background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:26px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.ip-card::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:.6}
.ip-card>*{position:relative;z-index:1}
.avatar{width:84px;height:84px;border-radius:22px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-size:34px;font-weight:800;box-shadow:var(--shadow);margin-bottom:16px}
.ip-card h3{font-size:21px;margin-bottom:2px}
.ip-card .role{font-size:13px;color:var(--brand-2);font-weight:700;letter-spacing:.5px}
.ip-card p{font-size:14px;color:var(--ink-soft);margin-top:12px}
.ip-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.ip-tags span{font-size:12px;background:var(--bg);border:1px solid var(--line);padding:5px 11px;border-radius:999px;color:var(--ink-soft)}

/* ===== 通用区块 ===== */
section.block{padding:74px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 46px}
.sec-head .kicker{font-size:13px;font-weight:700;letter-spacing:3px;color:var(--brand-1);text-transform:uppercase}
.sec-head h2{font-size:38px;font-weight:820;margin:10px 0 12px;letter-spacing:-.5px}
.sec-head p{color:var(--ink-soft);font-size:16px}

/* 关于 IP */
.about{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.about .panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.25s}
.about .panel:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.about .panel .tag{display:inline-block;font-size:12px;font-weight:700;color:#fff;background:var(--grad);padding:4px 12px;border-radius:999px;margin-bottom:14px}
.about .panel h3{font-size:23px;margin-bottom:8px}
.about .panel .sub{font-size:14px;color:var(--brand-2);font-weight:700;margin-bottom:14px}
.about .panel p{color:var(--ink-soft);font-size:15px}
.about .panel ul{margin-top:14px;padding-left:18px;color:var(--ink-soft);font-size:14px}
.about .panel ul li{margin:6px 0}

/* 栏目卡片 */
.cols{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.col-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;gap:18px;transition:.25s;position:relative;overflow:hidden}
.col-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.col-ico{width:56px;height:56px;flex:0 0 56px;border-radius:16px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:26px}
.col-card h3{font-size:19px;margin-bottom:6px}
.col-card p{color:var(--ink-soft);font-size:14px}
.col-card .meta{margin-top:12px;font-size:12px;color:var(--ink-faint);font-weight:600;letter-spacing:.5px}

/* 文章/测评卡片 */
.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.art-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;transition:.25s}
.art-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.art-col{align-self:flex-start;font-size:12px;font-weight:700;color:#fff;background:var(--grad);padding:4px 12px;border-radius:999px;margin-bottom:14px}
.art-card h3{font-size:18px;line-height:1.4;margin-bottom:10px}
.art-card p{color:var(--ink-soft);font-size:14px;flex:1}
.art-foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px;font-size:13px;color:var(--ink-faint)}
.art-foot a{color:var(--brand-1);font-weight:600}

/* 话题云 */
.topics{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.topics a{padding:10px 18px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink-soft);transition:.2s}
.topics a:hover{background:var(--grad);color:#fff;border-color:transparent;transform:translateY(-2px)}

/* 影响力数据 */
.impact{background:var(--ink);border-radius:28px;padding:46px 30px;color:#fff;position:relative;overflow:hidden}
.impact::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(139,92,246,.5),transparent 70%);top:-180px;right:-120px;filter:blur(20px)}
.impact-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.impact .num{font-size:40px;font-weight:850;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.impact .lbl{font-size:14px;color:#cbd5e1;margin-top:6px}

/* 订阅 */
.subscribe{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:44px;box-shadow:var(--shadow)}
.sub-form{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.sub-form input{flex:1;min-width:200px;padding:13px 18px;border-radius:999px;border:1px solid var(--line);font-size:15px;outline:none;background:var(--bg);transition:.2s}
.sub-form input:focus{border-color:var(--brand-1);background:#fff}
.sub-note{font-size:13px;color:var(--ink-faint);margin-top:12px}
.socials{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.socials a{display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:14px;background:var(--bg);border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink-soft);transition:.2s}
.socials a:hover{border-color:var(--brand-1);color:var(--brand-1);transform:translateY(-2px)}

/* ===== 最新动态 ===== */
.feed-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feed-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s;position:relative;overflow:hidden;display:flex;flex-direction:column}
.feed-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.feed-ico{width:48px;height:48px;border-radius:14px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:14px}
.feed-type{display:inline-block;font-size:11px;font-weight:700;letter-spacing:1px;color:#fff;background:var(--grad);padding:4px 10px;border-radius:999px;margin-bottom:14px;align-self:flex-start}
.feed-card h3{font-size:18px;line-height:1.35;margin-bottom:10px}
.feed-card p{color:var(--ink-soft);font-size:14px;flex:1}
.feed-meta{margin-top:16px;font-size:12px;color:var(--ink-faint);font-weight:600}
.timeline{list-style:none;padding:0;margin:10px 0 0;color:var(--ink-soft);font-size:14px}
.timeline li{position:relative;padding-left:18px;margin:12px 0;line-height:1.5}
.timeline li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%;background:var(--grad)}
.timeline .time{display:block;font-size:12px;font-weight:700;color:var(--brand-1);margin-bottom:2px}

/* ===== 著作展示 ===== */
.about-book{display:grid;grid-template-columns:.35fr .65fr;gap:36px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:38px;margin-top:46px;box-shadow:var(--shadow)}
.book-cover img{width:100%;max-width:240px;border-radius:14px;box-shadow:0 18px 40px -16px rgba(15,23,42,.25)}
.book-info .kicker{margin-bottom:10px}
.book-info h2{font-size:28px;font-weight:820;margin:8px 0 6px}
.book-info h3{font-size:18px;color:var(--brand-2);margin-bottom:14px;line-height:1.4}
.book-info p{color:var(--ink-soft);font-size:15px;line-height:1.75}
.book-meta{margin-top:18px;font-size:13px;color:var(--ink-faint);font-weight:600}

/* ===== 技术体系 / 实施框架 ===== */
.framework{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:38px;margin-top:32px}
.framework-head{text-align:center;max-width:720px;margin:0 auto 28px}
.framework-head .kicker{margin-bottom:10px}
.framework-head h2{font-size:28px;font-weight:820;margin:8px 0 12px}
.framework-head p{color:var(--ink-soft);font-size:15px;line-height:1.7}
.framework-img{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--bg)}
.framework-img img{width:100%;height:auto;display:block}

/* 页脚 */
footer{background:var(--ink);color:#cbd5e1;padding:46px 0 30px;margin-top:60px}
.foot-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;align-items:flex-start}
.foot-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:18px}
.foot-brand img{width:40px;height:40px;border-radius:11px}
.foot p{font-size:13px;color:#94a3b8;max-width:340px;margin-top:12px}
.foot-cols{display:flex;gap:54px;flex-wrap:wrap}
.foot-col h4{color:#fff;font-size:14px;margin-bottom:12px}
.foot-col a{display:block;font-size:13px;color:#94a3b8;margin:7px 0;transition:.2s}
.foot-col a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:20px;font-size:12px;color:#64748b;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* reveal 动画 */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:46px}
  .about,.cols,.subscribe,.feed-grid,.about-book{grid-template-columns:1fr}
  .articles{grid-template-columns:1fr}
  .impact-grid{grid-template-columns:repeat(2,1fr);gap:30px 16px}
  .book-cover{text-align:center}
  .book-cover img{max-width:200px;margin:0 auto}
  .framework{padding:26px}
  .framework-head h2{font-size:24px}
  .nav-links{position:fixed;inset:68px 0 auto 0;background:var(--bg);flex-direction:column;gap:0;padding:10px 22px 22px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.3s;box-shadow:0 20px 40px -30px rgba(0,0,0,.3)}
  .nav-links.open{transform:none}
  .nav-links a{padding:14px 0;width:100%;border-bottom:1px solid var(--line)}
  .burger{display:flex}
  .nav-cta .btn-ghost{display:none}
}
@media(max-width:560px){
  .hero h1{font-size:38px}
  .hero h1 .en{font-size:17px;letter-spacing:3px}
  .sec-head h2{font-size:28px}
  .hero-stats{gap:22px}
  .impact-grid{grid-template-columns:1fr 1fr}
}