/* 快喵 Kuaimiao — Global Design System */
:root{--bg:#0b1020;--bg2:#0f162e;--card:#141d3a;--card2:#1a2446;--line:#26315c;--txt:#e8ecf8;--muted:#9aa7c7;--brand:#2dd4bf;--brand2:#3b82f6;--accent:#f59e0b;--good:#34d399;--warn:#fbbf24;--bad:#f87171;--r:16px;--r-sm:10px;--shadow:0 18px 45px rgba(3,7,22,.55);--grad:linear-gradient(135deg,#2dd4bf 0%,#3b82f6 100%)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;-webkit-font-smoothing:antialiased;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1200px,92%);margin:0 auto}
/* header */
header{position:sticky;top:0;z-index:100;background:rgba(11,16,32,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.brand img{width:34px;height:34px;border-radius:8px}
.brand .logo-txt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav-links a{padding:8px 13px;border-radius:8px;color:var(--muted);font-size:14px;font-weight:500;transition:.2s}
.nav-links a:hover{color:var(--txt);background:var(--card2)}
.nav-links a.active{color:var(--brand);background:rgba(45,212,191,.1)}
.nav-cta{background:var(--grad);color:#06231f!important;font-weight:700;padding:9px 18px!important;border-radius:8px}
.nav-cta:hover{opacity:.92;color:#06231f!important}
/* hero */
.hero{position:relative;padding:70px 0 60px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(900px 500px at 20% 0%,rgba(59,130,246,.22),transparent 60%),radial-gradient(700px 500px at 90% 20%,rgba(45,212,191,.16),transparent 60%)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(45,212,191,.12);border:1px solid rgba(45,212,191,.3);color:var(--brand);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:18px}
.hero h1{font-size:46px;line-height:1.18;font-weight:800;margin-bottom:18px}
.hero h1 .hl{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{color:var(--muted);font-size:17px;max-width:520px;margin-bottom:28px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:10px;font-weight:700;font-size:15px;transition:.2s}
.btn-primary{background:var(--grad);color:#06231f}
.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line);color:var(--txt);background:rgba(20,29,58,.5)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.hero-meta{display:flex;gap:26px;margin-top:30px;flex-wrap:wrap}
.hero-meta .m b{display:block;font-size:22px}
.hero-meta .m span{color:var(--muted);font-size:13px}
/* client simulator */
.simulator{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;position:relative}
.sim-top{display:flex;align-items:center;gap:6px;padding:12px 16px;background:var(--card2);border-bottom:1px solid var(--line)}
.sim-top .dot{width:12px;height:12px;border-radius:50%}
.sim-top .dot.r{background:#ff5f57}.sim-top .dot.y{background:#febc2e}.sim-top .dot.g{background:#28c840}
.sim-top .sim-title{flex:1;text-align:center;color:var(--muted);font-size:13px}
.sim-body{padding:20px}
.sim-status{display:flex;align-items:center;gap:12px;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:16px}
.sim-status .ring{width:58px;height:58px;border-radius:50%;border:3px solid var(--brand);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;color:var(--brand)}
.sim-status .lbl{font-size:13px;color:var(--muted)}
.sim-status .val{font-size:18px;font-weight:700}
.sim-row{display:flex;justify-content:space-between;align-items:center;padding:11px 14px;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;font-size:14px}
.sim-row .name{font-weight:600}
.sim-row .tag{background:var(--good);color:#06231f;font-size:11px;padding:2px 9px;border-radius:999px;font-weight:700}
.sim-row .lat{color:var(--good);font-weight:700}
.sim-btn{display:block;text-align:center;background:var(--grad);color:#06231f;font-weight:800;padding:14px;border-radius:12px;margin-top:6px;font-size:16px}
/* section */
section{padding:60px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 40px}
.sec-head .kicker{color:var(--brand);font-size:14px;font-weight:700;letter-spacing:1px;text-transform:uppercase}
.sec-head h2{font-size:32px;font-weight:800;margin:10px 0 12px}
.sec-head p{color:var(--muted)}
/* cards grid */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.25s}
.card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow)}
.card .ico{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;background:rgba(45,212,191,.12)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}
.card .num{font-size:13px;color:var(--brand);font-weight:700}
/* notice */
.notice{background:var(--card2);border-left:4px solid var(--accent);border-radius:10px;padding:16px 20px;margin-bottom:14px}
.notice b{color:var(--accent)}
/* trust */
.trust{display:flex;gap:24px;flex-wrap:wrap;justify-content:center;text-align:center}
.trust .t{flex:1;min-width:150px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.trust .t b{display:block;font-size:26px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.trust .t span{color:var(--muted);font-size:13px}
/* comparison table */
.tbl{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--r);overflow:hidden;font-size:14px}
.tbl th,.tbl td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{background:var(--card2);font-weight:700;color:var(--txt)}
.tbl td{color:var(--muted)}
.tbl .yes{color:var(--good);font-weight:700}
.tbl .no{color:var(--bad)}
.tbl tr:last-child td{border-bottom:none}
/* news tabs */
.tabs{display:flex;gap:8px;justify-content:center;margin-bottom:28px;flex-wrap:wrap}
.tab{background:var(--card);border:1px solid var(--line);color:var(--muted);padding:9px 20px;border-radius:999px;font-weight:600;font-size:14px}
.tab.active{background:var(--grad);color:#06231f;border-color:transparent}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.25s}
.news-item:hover{transform:translateY(-4px);border-color:var(--brand)}
.news-item img{height:160px;width:100%;object-fit:cover}
.news-item .ni-body{padding:18px}
.news-item .ni-cat{font-size:12px;color:var(--brand);font-weight:700}
.news-item h4{font-size:16px;margin:8px 0}
.news-item .ni-date{color:var(--muted);font-size:12.5px}
/* reviews */
.review{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.review .stars{color:var(--accent);font-size:15px;margin-bottom:8px}
.review p{color:var(--muted);font-size:14.5px;margin-bottom:12px}
.review .user{display:flex;align-items:center;gap:10px}
.review .avatar{width:38px;height:38px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#06231f;font-weight:800}
.review .user b{font-size:14px}
.review .user span{display:block;color:var(--muted);font-size:12px}
/* download */
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 16px;text-align:center;transition:.25s}
.dl:hover{transform:translateY(-4px);border-color:var(--brand)}
.dl .os{font-size:40px;margin-bottom:10px}
.dl h4{font-size:17px;margin-bottom:4px}
.dl .ver{color:var(--muted);font-size:12.5px;margin-bottom:14px}
.dl .btn{display:block;padding:11px}
/* faq */
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;margin-bottom:16px}
.faq-item h3{font-size:18px;margin-bottom:12px;color:var(--brand)}
.faq-item ol,.faq-item ul{padding-left:22px;color:var(--muted);font-size:14.5px}
.faq-item li{margin-bottom:8px}
/* CTA */
.cta{background:var(--grad);border-radius:20px;padding:46px;text-align:center;color:#06231f}
.cta h2{font-size:30px;font-weight:800;margin-bottom:10px}
.cta p{margin-bottom:22px;opacity:.9}
.cta .btn{background:#06231f;color:#fff}
/* footer */
footer{background:var(--bg2);border-top:1px solid var(--line);padding:46px 0 20px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.foot-grid h5{font-size:15px;margin-bottom:14px}
.foot-grid a{display:block;color:var(--muted);font-size:13.5px;margin-bottom:9px}
.foot-grid a:hover{color:var(--brand)}
.foot-bottom{border-top:1px solid var(--line);padding-top:18px;text-align:center;color:var(--muted);font-size:13px}
.foot-bottom a{color:var(--muted);margin:0 8px}
/* breadcrumb */
.crumb{font-size:13px;color:var(--muted);padding:18px 0;border-bottom:1px solid var(--line);margin-bottom:30px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb span{color:var(--brand)}
/* article */
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start}
.article h1{font-size:30px;font-weight:800;margin:10px 0 16px;line-height:1.35}
.article .meta{color:var(--muted);font-size:13px;margin-bottom:22px}
.article h2{font-size:22px;margin:28px 0 12px;padding-left:12px;border-left:4px solid var(--brand)}
.article p{color:var(--muted);margin-bottom:16px;font-size:15.5px}
.article img{border-radius:var(--r);margin:16px 0}
.article figure{margin:18px 0}
.article figcaption{color:var(--muted);font-size:12.5px;text-align:center;margin-top:6px}
.article blockquote{border-left:4px solid var(--accent);background:var(--card);padding:16px 20px;border-radius:0 10px 10px 0;color:var(--txt);margin:18px 0;font-style:italic}
.sidebar{position:sticky;top:88px}
.side-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:18px}
.side-box h4{font-size:16px;margin-bottom:12px;border-bottom:1px solid var(--line);padding-bottom:10px}
.side-box a{display:block;color:var(--muted);font-size:13.5px;margin-bottom:10px}
.side-box a:hover{color:var(--brand)}
.side-box .cat{display:inline-block;background:var(--card2);border:1px solid var(--line);padding:5px 12px;border-radius:999px;font-size:12.5px;margin:0 6px 8px 0;color:var(--muted)}
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:24px}
.toc h4{margin-bottom:10px;font-size:15px}
.toc a{display:block;color:var(--muted);font-size:14px;margin-bottom:7px;padding-left:12px;border-left:2px solid var(--line)}
.toc a:hover{color:var(--brand);border-color:var(--brand)}
.prevnext{display:flex;justify-content:space-between;gap:14px;margin-top:30px}
.prevnext a{flex:1;background:var(--card);border:1px solid var(--line);padding:16px;border-radius:var(--r);font-size:14px;color:var(--muted)}
.prevnext a:hover{border-color:var(--brand);color:var(--txt)}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:14px}
.lang-switch{display:flex;gap:4px;align-items:center;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.lang-switch a{padding:6px 12px;font-size:13px;color:var(--muted);font-weight:600}
.lang-switch a.active{background:var(--grad);color:#06231f}
/* responsive */
@media(max-width:960px){
.hero-grid{grid-template-columns:1fr}
.hero h1{font-size:34px}
.g3,.g2,.g4,.news-grid,.dl-grid,.related,.foot-grid{grid-template-columns:1fr 1fr}
.article-layout{grid-template-columns:1fr}
.sidebar{position:static}
.nav-links{display:none}
}
@media(max-width:600px){
.g3,.g2,.g4,.news-grid,.dl-grid,.related,.foot-grid{grid-template-columns:1fr}
.hero h1{font-size:28px}
section{padding:40px 0}
}