/* Nord VPN 站点样式 · 深色主题 · 参考站组件体系 */
:root{
  --bg:#080b12;--bg2:#0c1220;--card:#121a2c;--card2:#0f1728;
  --line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.14);
  --txt:#e9efff;--muted:#8ea0bd;
  --brand:#3d6bf5;--brand2:#00d0b4;
  --grad:linear-gradient(135deg,#3d6bf5,#00d0b4);
  --r:16px;--r2:24px;
  --sh:0 14px 40px rgba(0,0,0,.5);
  --glow:0 0 0 1px rgba(61,107,245,.25),0 12px 40px rgba(61,107,245,.18);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;line-height:1.7;font-size:16px;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,label{font-family:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-txt{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.h1-line2{display:block;margin-top:8px}
.vh{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important;opacity:0!important;pointer-events:none!important}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:999;background:var(--brand);color:#fff;padding:10px 16px;border-radius:8px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:13px 26px;border-radius:12px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s;line-height:1.2}
.btn-primary{background:var(--grad);color:#031018;box-shadow:0 8px 24px rgba(61,107,245,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(0,216,192,.42)}
.btn-ghost{border-color:var(--line2);color:var(--txt);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--brand);color:#fff;background:rgba(61,107,245,.12);transform:translateY(-3px)}
.btn-lg{padding:16px 34px;font-size:17px;min-height:56px}
.btn-block{width:100%}

/* 区块 */
.sec{padding:96px 0;position:relative}
.sec-alt{background:linear-gradient(180deg,var(--bg),var(--bg2) 40%,var(--bg))}
.sec-head{text-align:center;max-width:860px;margin:0 auto 56px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand2);background:rgba(0,216,192,.1);border:1px solid rgba(0,216,192,.28);padding:6px 14px;border-radius:999px;margin-bottom:18px}
h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:-.01em}
h2.sec-title{font-size:36px;margin-bottom:16px}
.sec-sub{color:var(--muted);font-size:17px}

/* 导航 */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(8,11,18,.6);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .3s,border-color .3s}
.nav.scrolled{background:rgba(8,11,18,.94);border-bottom-color:var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:72px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;flex:0 0 auto}
.brand .brand-mark-img{width:38px;height:38px;border-radius:10px;display:block;flex:0 0 auto;overflow:hidden}
.nav-menu{flex:1 1 auto}
.nav-menu>ul{display:flex;align-items:center;gap:4px}
.nav-menu a,.sub-toggle{display:inline-flex;align-items:center;gap:6px;padding:10px 13px;border-radius:10px;font-size:15px;font-weight:600;color:#cbd8ee;cursor:pointer;transition:color .2s,background .2s}
.nav-menu a:hover,.sub-toggle:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-menu a.on{color:#fff;background:rgba(61,107,245,.16)}
.has-sub{position:relative}
.caret{font-style:normal;font-size:11px;transition:transform .3s;display:inline-block}
.sub-cb{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.sub-menu{position:absolute;top:100%;left:0;min-width:230px;background:#fff;border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.45);padding:10px;display:none;z-index:20}
.sub-menu a{color:#1b2436;font-size:14px;font-weight:600;width:100%;border-radius:9px}
.sub-menu a:hover{background:#eef4ff;color:var(--brand)}
.nav-cta{margin-left:auto;flex:0 0 auto}
.nav-cta .btn{min-height:42px;padding:10px 20px;font-size:14px}
.nav-toggle-cb{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.nav-hamburger{display:none;width:46px;height:46px;border-radius:11px;border:1px solid var(--line2);flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;margin-left:auto}
.nav-hamburger span{display:block;width:20px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}
@media(min-width:993px){.has-sub:hover>.sub-menu,.has-sub:focus-within>.sub-menu{display:block}.has-sub:hover>.sub-toggle .caret,.sub-cb:checked~.sub-toggle .caret{transform:rotate(180deg)}}
.sub-cb:checked~.sub-menu{display:block}
.sub-cb:checked~.sub-toggle{color:#fff;background:rgba(255,255,255,.06)}

/* Hero */
.hero{padding:150px 0 90px;position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;top:-260px;right:-160px;width:760px;height:760px;background:radial-gradient(circle,rgba(61,107,245,.28),transparent 62%);pointer-events:none}
.hero:after{content:"";position:absolute;bottom:-300px;left:-200px;width:680px;height:680px;background:radial-gradient(circle,rgba(0,216,192,.16),transparent 60%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:50px;margin-bottom:22px}
.hero-lead{font-size:18px;color:#b9c8e2;max-width:580px;margin-bottom:32px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:580px}
.stat{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.stat b{display:block;font-size:25px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat span{font-size:13px;color:var(--muted)}

/* Hero 客户端演示 */
.demo{background:linear-gradient(160deg,#111a2e,#0b1120);border:1px solid var(--line2);border-radius:var(--r2);box-shadow:var(--sh);padding:22px;position:relative}
.demo:before{content:"";position:absolute;inset:0;border-radius:var(--r2);box-shadow:var(--glow);pointer-events:none}
.demo-bar{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.dot{width:11px;height:11px;border-radius:50%;background:#2b3a56}
.dot.r{background:#ff5f57}.dot.y{background:#febc2e}.dot.g{background:#28c840}
.demo-bar span{margin-left:8px;font-size:12px;color:var(--muted);letter-spacing:.08em}
.node-pick{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.node-pick label{font-size:12.5px;font-weight:700;padding:8px 13px;border-radius:999px;border:1px solid var(--line2);color:#c3d0e6;cursor:pointer;transition:.25s;background:rgba(255,255,255,.03)}
.node-pick label:hover{border-color:var(--brand)}
#dn1:checked~.node-pick label[for="dn1"],#dn2:checked~.node-pick label[for="dn2"],#dn3:checked~.node-pick label[for="dn3"]{background:rgba(61,107,245,.16);border-color:var(--brand);color:#fff}
.demo-row b{display:none}
#dn1:checked~.demo-rows .n1,#dn2:checked~.demo-rows .n2,#dn3:checked~.demo-rows .n3{display:inline}
.dial{width:206px;height:206px;margin:6px auto 18px;border-radius:50%;background:conic-gradient(from 180deg,var(--brand) var(--p,0%),rgba(255,255,255,.07) 0);display:grid;place-items:center;transition:background .6s ease;position:relative}
.dial:after{content:"";position:absolute;inset:12px;border-radius:50%;background:#0b1120}
.dial-in{position:relative;z-index:2;text-align:center}
.dial-in b{display:block;font-size:34px;font-weight:800;line-height:1.15}
.dial-in span{font-size:13px;color:var(--muted)}
.st-on{display:none}
#dconnect:checked~.dial{--p:100%}
#dconnect:checked~.dial .st-off{display:none}
#dconnect:checked~.dial .st-on{display:block}
#dconnect:checked~.dial .dial-in b.st-on{color:var(--brand2)}
.switches{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.sw{display:inline-flex;align-items:center;gap:9px;font-size:13px;color:#c3d0e6;cursor:pointer}
.sw i{width:40px;height:22px;border-radius:999px;background:rgba(255,255,255,.12);position:relative;transition:.25s}
.sw i:after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#8ea0bd;transition:.25s}
.sw input:checked+i{background:rgba(0,216,192,.3)}
.sw input:checked+i:after{left:21px;background:var(--brand2)}
.demo-rows{display:grid;gap:10px;margin-bottom:16px}
.demo-row{display:flex;justify-content:space-between;align-items:center;background:rgba(255,255,255,.035);border:1px solid var(--line);border-radius:12px;padding:11px 14px;font-size:14px}
.demo-row b{font-size:13.5px;color:#fff}
.demo-row em{font-style:normal;color:var(--muted);font-size:13px}
.demo-actions{display:flex;gap:10px;flex-wrap:wrap}
.demo-actions .btn{flex:1 1 0;min-width:130px}
.connect-label .on{display:none}
#dconnect:checked~.demo-actions .connect-label .off{display:none}
#dconnect:checked~.demo-actions .connect-label .on{display:inline}

/* 指标 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;text-align:center}
.metric b{display:block;font-size:34px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.metric span{font-size:14px;color:var(--muted)}

/* 卡片 */
.cards{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:transform .3s,box-shadow .3s,border-color .3s}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(0,0,0,.5);border-color:var(--line2)}
.ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:25px;background:rgba(61,107,245,.12);border:1px solid rgba(61,107,245,.28);margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}

/* 参数条 + 节点网格 */
.speed-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.bars{display:grid;gap:18px}
.bar-row .bar-top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px;color:#cbd8ee;gap:12px}
.bar-row .bar-top b{color:#fff;font-variant-numeric:tabular-nums;white-space:nowrap}
.bar{height:10px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.bar i{display:block;height:100%;width:var(--w);background:var(--grad);border-radius:999px;transition:width 1s ease}
.node-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.node{background:var(--card2);border:1px solid var(--line);border-radius:13px;padding:15px}
.node b{display:block;font-size:15px}
.node span{font-size:12.5px;color:var(--muted)}
.node u{text-decoration:none;display:block;margin-top:8px;font-size:12px;font-weight:700;color:var(--brand2)}
.node .spd{display:block;font-size:12px;color:var(--muted);margin-top:4px}
.note{margin-top:22px;font-size:13.5px;color:var(--muted)}

/* 数据表格 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.datatable{width:100%;border-collapse:collapse;font-size:14.5px;min-width:720px}
.datatable th,.datatable td{border:1px solid var(--line);padding:13px 16px;text-align:left}
.datatable th{background:rgba(255,255,255,.04);color:#fff;font-size:14px}
.datatable td{color:#c1cfe6}
.datatable tbody tr:hover td{background:rgba(61,107,245,.06)}
.datatable td.hl{color:var(--brand2);font-weight:700}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px;text-align:center}
.step .ring{width:64px;height:64px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;font-size:24px;font-weight:800;background:rgba(0,216,192,.1);border:1px solid rgba(0,216,192,.3);color:var(--brand2)}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px}

/* 协议与加密 split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split h2{font-size:34px;margin-bottom:16px}
.lead-txt{font-size:17px;color:#c0cfe6;margin-bottom:28px}
.flist{display:grid;gap:16px}
.flist li{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.flist .fi{width:42px;height:42px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;font-size:20px;background:rgba(61,107,245,.12);border:1px solid rgba(61,107,245,.28)}
.flist b{display:block;font-size:16px;margin-bottom:4px}
.flist span{font-size:14.5px;color:var(--muted)}

/* 价格 */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch}
.plan{background:var(--card);border:1px solid var(--line);border-radius:var(--r2);padding:34px 30px;display:flex;flex-direction:column;position:relative;transition:transform .3s,box-shadow .3s}
.plan:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.plan.pop{border-color:rgba(61,107,245,.5);background:linear-gradient(180deg,rgba(61,107,245,.1),var(--card) 40%);box-shadow:var(--glow)}
.plan .tag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#031018;font-size:12.5px;font-weight:800;padding:6px 16px;border-radius:999px;white-space:nowrap}
.plan h3{font-size:20px;margin-bottom:6px}
.plan .price{font-size:38px;font-weight:800;margin:14px 0 4px}
.plan .price small{font-size:14px;font-weight:600;color:var(--muted)}
.plan .desc{color:var(--muted);font-size:14px;margin-bottom:20px}
.plan ul{display:grid;gap:11px;margin-bottom:26px}
.plan li{font-size:14.5px;color:#c8d5ea;display:flex;gap:10px;align-items:flex-start}
.plan li:before{content:"✓";color:var(--brand2);font-weight:800}
.plan .btn{margin-top:auto}

/* FAQ */
.faq{max-width:900px;margin:0 auto;display:grid;gap:14px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq summary{cursor:pointer;padding:20px 24px;font-weight:700;font-size:16.5px;display:flex;justify-content:space-between;gap:16px;align-items:center;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:22px;color:var(--brand2);font-weight:700;transition:transform .3s;flex:0 0 auto}
.faq details[open] summary:after{transform:rotate(45deg)}
.faq details[open] summary{color:#fff}
.faq .ans{padding:0 24px 22px;color:var(--muted);font-size:15px}

/* 评价 */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px}
.quote .stars{color:#ffc53d;font-size:14px;letter-spacing:2px;margin-bottom:12px}
.quote p{font-size:15px;color:#c8d5ea;margin-bottom:18px}
.who{display:flex;align-items:center;gap:12px}
.ava{width:42px;height:42px;border-radius:50%;background:var(--grad);color:#031018;display:grid;place-items:center;font-weight:800}
.who b{display:block;font-size:14.5px}
.who span{font-size:12.5px;color:var(--muted)}

/* 资讯卡 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s,border-color .3s}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:var(--line2)}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#14203a,#0d1526);display:grid;place-items:center;font-size:34px}
.news-card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.chip{display:inline-block;font-size:12px;font-weight:700;color:var(--brand2);background:rgba(0,216,192,.1);border:1px solid rgba(0,216,192,.26);padding:4px 11px;border-radius:999px;margin-bottom:12px;align-self:flex-start}
.news-card h3{font-size:17.5px;margin-bottom:10px}
.news-card h3 a:hover{color:var(--brand2)}
.news-card p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.news-card .meta{margin-top:auto;font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap}

/* CTA */
.cta-band{background:linear-gradient(135deg,rgba(61,107,245,.18),rgba(0,216,192,.14));border:1px solid var(--line2);border-radius:var(--r2);padding:60px 40px;text-align:center}
.cta-band h2{font-size:34px;margin-bottom:14px}
.cta-band p{color:#c0cfe6;font-size:17px;margin-bottom:30px}
.cta-band .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* 页脚 */
.footer{background:#05080e;border-top:1px solid var(--line);padding:66px 0 26px;position:relative}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.foot-brand .brand{margin-bottom:14px}
.foot-brand p{color:var(--muted);font-size:14.5px;max-width:340px}
.footer h4{font-size:15px;margin-bottom:16px}
.footer li{margin-bottom:10px}
.footer li a{color:var(--muted);font-size:14.5px}
.footer li a:hover{color:var(--brand2)}
.foot-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:13.5px}
.foot-bottom a:hover{color:var(--brand2)}
.to-top{position:fixed;right:22px;bottom:22px;width:48px;height:48px;border-radius:13px;background:var(--grad);color:#031018;display:grid;place-items:center;font-weight:800;font-size:18px;z-index:90;box-shadow:0 10px 26px rgba(61,107,245,.4)}
.to-top:hover{transform:translateY(-4px)}

/* 内页页头 */
.page-head{padding:140px 0 40px}
.crumb{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.crumb a:hover{color:var(--brand2)}
.crumb span{margin:0 8px;opacity:.6}
.page-head h1{font-size:42px;margin-bottom:16px}
.page-head .sec-sub{max-width:820px}

/* 下载页组件 */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s,border-color .3s}
.dl-card:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:var(--line2)}
.dl-card .os-ico{font-size:32px;margin-bottom:14px}
.dl-card h3{font-size:19px;margin-bottom:6px}
.dl-card .ver{font-size:13px;color:var(--brand2);font-weight:700;margin-bottom:14px}
.dl-card p{font-size:14.5px;color:var(--muted);margin-bottom:18px}
.dl-card ul{display:grid;gap:9px;margin-bottom:22px}
.dl-card li{font-size:14px;color:#c1cfe6;display:flex;gap:9px}
.dl-card li:before{content:"✓";color:var(--brand2);font-weight:800}
.dl-card .btn{margin-top:auto}
.dl-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.dl-step{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;position:relative}
.dl-step .ring{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:20px;font-weight:800;background:var(--grad);color:#031018;margin-bottom:16px}
.dl-step h3{font-size:17px;margin-bottom:8px}
.dl-step p{font-size:14.5px;color:var(--muted)}
.specs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.spec{background:var(--card2);border:1px solid var(--line);border-radius:13px;padding:18px}
.spec b{display:block;font-size:13px;color:var(--muted);font-weight:600;margin-bottom:7px}
.spec span{font-size:15px;color:#e2ecff;font-weight:600}

/* 资讯页布局 */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.side{position:sticky;top:96px;display:grid;gap:22px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.side-card h3{font-size:16px;margin-bottom:16px;padding-left:12px;position:relative}
.side-card h3:before{content:"";position:absolute;left:0;top:2px;bottom:2px;width:3px;border-radius:3px;background:var(--grad)}
.hot li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px dashed var(--line)}
.hot li:last-child{border-bottom:0}
.hot .rk{flex:0 0 auto;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;font-size:12.5px;font-weight:800;background:#2b3a56;color:#cbd8ee;transition:.3s}
.hot li:nth-child(1) .rk{background:var(--grad);color:#031018}
.hot li:nth-child(2) .rk{background:linear-gradient(135deg,#ff9a3c,#ff6b35);color:#2a1000}
.hot li:nth-child(3) .rk{background:linear-gradient(135deg,#ffd76e,#e0a800);color:#2a1c00}
.hot a{font-size:14px;color:#c1cfe6;line-height:1.55}
.hot li:hover a{color:var(--brand2)}
.tags{display:flex;flex-wrap:wrap;gap:9px}
.tags a,.tags button{font-size:12.5px;font-weight:600;padding:7px 13px;border-radius:999px;border:1px solid var(--line2);color:#c1cfe6;background:transparent;cursor:pointer;transition:.25s}
.tags a:hover,.tags button:hover,.tags button.on{background:rgba(61,107,245,.14);border-color:var(--brand);color:#fff}

/* 进场动画 */
html.js .reveal{opacity:0;transform:translateY(28px)}
html.js .reveal.in{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}

/* 响应式 */
@media(max-width:992px){
  .hero-grid,.speed-grid,.split,.article-layout{grid-template-columns:1fr}
  .g3,.news-grid,.quotes,.pricing,.dl-grid,.specs,.steps,.dl-steps,.post-grid{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:40px}
  h2.sec-title{font-size:30px}
  .page-head h1{font-size:34px}
  .side{position:static}
  .nav-menu{position:absolute;top:72px;left:0;right:0;background:rgba(8,11,18,.98);border-bottom:1px solid var(--line);padding:14px 24px;display:none;max-height:78vh;overflow:auto}
  .nav-menu>ul{flex-direction:column;align-items:stretch;gap:2px}
  .nav-toggle-cb:checked~.nav-menu{display:block}
  .nav-hamburger{display:flex}
  .nav-cta{display:none}
  .sub-menu{position:static;background:rgba(255,255,255,.04);box-shadow:none;padding:6px;margin:4px 0 6px;min-width:0}
  .sub-menu a{color:#c1cfe6}
  .sub-menu a:hover{background:rgba(61,107,245,.14);color:#fff}
  .has-sub:hover>.sub-menu{display:none}
  .sub-cb:checked~.sub-menu{display:block}
  .sec{padding:72px 0}
}
@media(max-width:768px){
  .wrap,.nav-inner{padding:0 18px}
  .hero{padding:126px 0 64px}
  .hero h1{font-size:32px}
  .hero-lead{font-size:16.5px}
  .hero-stats{grid-template-columns:1fr;gap:12px}
  .stat{display:flex;align-items:baseline;gap:12px;padding:13px 16px}
  .stat b{font-size:22px}
  .g2,.g3,.news-grid,.quotes,.pricing,.dl-grid,.steps,.dl-steps,.specs,.metrics,.post-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .plan.pop{transform:none}
  .hero-btns .btn,.cta-band .btns .btn{width:100%}
  .cta-band{padding:40px 22px}
  .cta-band h2{font-size:26px}
  .split h2{font-size:26px}
  h2.sec-title{font-size:26px}
  .page-head{padding:120px 0 30px}
  .dial{width:170px;height:170px}
}

/* 更新日期行 */
.upd{font-size:13px;color:var(--muted);margin-top:14px}
/* 首页 TL;DR 定义块 */
.tldr{border:1px solid var(--line);border-left:4px solid var(--brand);background:var(--card2);border-radius:14px;padding:16px 18px;margin:18px 0 20px;max-width:760px}
.tldr b{display:block;font-size:13px;letter-spacing:.06em;color:var(--brand);margin-bottom:6px}
.tldr p{margin:0;font-size:15px;line-height:1.75}
/* 文章正文页 */
.post-body{max-width:780px}
.post-body h2{font-size:24px;margin:34px 0 12px}
.post-body h3{font-size:18px;margin:22px 0 8px}
.post-body p{color:var(--txt);line-height:1.85;margin-bottom:14px}
.post-body ul{margin:0 0 16px 20px}
.post-body li{margin-bottom:8px;line-height:1.75}
.post-meta{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:10px}