:root{--bg:#0a1628;--bg2:#0e1f36;--card:#12263f;--card2:#162c4a;--line:#1f3a5c;--txt:#e6edf6;--muted:#93a7bd;--cyan:#22d3ee;--cyan2:#06b6d4;--amber:#fbbf24;--amber2:#f59e0b;--green:#34d399;--red:#f87171;--grad:linear-gradient(135deg,#22d3ee,#6366f1);--radius:16px;--shadow:0 18px 50px rgba(2,8,20,.55)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{line-height:1.25;font-weight:700}
.section{padding:80px 0}
.section-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--cyan);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
.section-title{font-size:34px;margin-bottom:14px}
.section-sub{color:var(--muted);font-size:16px;max-width:680px;margin:0 auto 40px}
.center{text-align:center}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,22,40,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px}
.brand img{width:36px;height:36px;border-radius:9px}
.brand span{color:var(--amber)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--txt)}
.nav-actions{display:flex;align-items:center;gap:12px}
.lang-switch{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border:1px solid var(--line);border-radius:99px;font-size:13px;font-weight:600;color:var(--txt);transition:.2s}
.lang-switch:hover{border-color:var(--cyan);color:var(--cyan)}
/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:12px;font-weight:700;font-size:15px;transition:.22s;cursor:pointer;border:none;white-space:nowrap}
.btn-primary{background:var(--grad);color:#04121f;box-shadow:0 10px 26px rgba(34,211,238,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(34,211,238,.42)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--txt)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-amber{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#1a1203;box-shadow:0 10px 26px rgba(251,191,36,.28)}
.btn-amber:hover{transform:translateY(-2px)}
.btn-lg{padding:16px 38px;font-size:17px}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
/* Hero */
.hero{position:relative;overflow:hidden;padding:80px 0 70px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 400px at 70% 10%,rgba(34,211,238,.16),transparent 60%),radial-gradient(600px 400px at 20% 80%,rgba(99,102,241,.14),transparent 60%)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:7px;background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);color:var(--cyan);font-size:13px;font-weight:600;padding:6px 14px;border-radius:99px;margin-bottom:20px}
.hero h1{font-size:46px;margin-bottom:18px}
.hero-desc{color:var(--muted);font-size:17px;margin-bottom:30px;max-width:540px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-stats{display:flex;gap:32px;flex-wrap:wrap}
.hero-stats .stat b{display:block;font-size:26px;color:var(--amber)}
.hero-stats .stat span{font-size:13px;color:var(--muted)}
/* 客户端模拟器 */
.simulator{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}
.sim-head{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg2);border-bottom:1px solid var(--line)}
.sim-head .dot{width:11px;height:11px;border-radius:50%}
.sim-head .dot.r{background:#f87171}.sim-head .dot.y{background:#fbbf24}.sim-head .dot.g{background:#34d399}
.sim-head .addr{flex:1;margin-left:8px;background:var(--bg);border:1px solid var(--line);border-radius:8px;font-size:12px;color:var(--muted);padding:5px 12px}
.sim-body{padding:22px}
.sim-status{display:flex;align-items:center;justify-content:space-between;padding:16px;background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(99,102,241,.1));border:1px solid var(--line);border-radius:14px;margin-bottom:18px}
.sim-status .conn{display:flex;align-items:center;gap:10px;font-weight:700}
.sim-status .led{width:12px;height:12px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(52,211,153,.2);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.sim-node{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;transition:.2s}
.sim-node:hover{border-color:var(--cyan)}
.sim-node .flag{width:30px;height:22px;border-radius:4px;object-fit:cover}
.sim-node .name{flex:1;margin-left:12px;font-size:14px;font-weight:600}
.sim-node .ping{font-size:13px;color:var(--green);font-weight:700}
.sim-bar{margin-top:6px;background:var(--bg2);border-radius:8px;height:8px;overflow:hidden}
.sim-bar i{display:block;height:100%;background:var(--grad);width:78%;border-radius:8px}
/* 卡片网格 */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{transform:translateY(-5px);border-color:var(--cyan);box-shadow:var(--shadow)}
.card .icon{width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:24px;background:rgba(34,211,238,.12);margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}
/* 卖点 */
.point{background:linear-gradient(135deg,var(--card),var(--card2));border-left:4px solid var(--cyan)}
.point .num{font-size:40px;font-weight:800;color:rgba(34,211,238,.3);line-height:1}
/* 公告 */
.announce{background:var(--card2);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;display:flex;align-items:center;gap:14px;margin-bottom:18px}
.announce .badge{background:var(--amber);color:#1a1203;font-size:12px;font-weight:700;padding:4px 12px;border-radius:6px;white-space:nowrap}
.announce p{font-size:14.5px;color:var(--txt)}
.announce time{color:var(--muted);font-size:12.5px;white-space:nowrap}
/* 信任背书 */
.trust-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.trust-item{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 20px;font-size:14px;font-weight:600}
.trust-item .tick{color:var(--green);font-weight:800}
/* 场景 */
.scene{position:relative;overflow:hidden;border-radius:var(--radius);padding:30px;min-height:150px;display:flex;flex-direction:column;justify-content:flex-end}
.scene h3{margin-top:auto}
.scene p{color:var(--muted);font-size:13.5px}
/* 对比表格 */
.cmp-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.cmp-table th,.cmp-table td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
.cmp-table thead th{background:var(--bg2);font-size:15px;font-weight:700}
.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-table .yes{color:var(--green);font-weight:700}
.cmp-table .no{color:var(--muted)}
.cmp-table .hl{background:rgba(34,211,238,.06)}
/* Tabs */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px;justify-content:center}
.tab{display:inline-flex;align-items:center;gap:7px;padding:9px 20px;border:1px solid var(--line);border-radius:99px;font-size:14px;font-weight:600;color:var(--muted);transition:.2s;cursor:pointer}
.tab:hover{color:var(--txt);border-color:var(--muted)}
.tab.active{background:var(--grad);color:#04121f;border-color:transparent}
/* 评论 */
.review{display:flex;flex-direction:column;gap:14px}
.review-head{display:flex;align-items:center;gap:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;color:#04121f;font-size:17px}
.review-name{font-weight:700;font-size:14.5px}
.review-meta{font-size:12.5px;color:var(--muted)}
.review .stars{color:var(--amber);letter-spacing:2px}
.review blockquote{color:var(--txt);font-size:14.5px;border-left:3px solid var(--cyan);padding-left:14px}
/* 下载区 */
.dl-platforms{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 16px;text-align:center;transition:.25s}
.dl-item:hover{transform:translateY(-5px);border-color:var(--cyan)}
.dl-item .os{font-size:34px;margin-bottom:12px}
.dl-item h3{font-size:16px;margin-bottom:6px}
.dl-item p{font-size:12.5px;color:var(--muted);margin-bottom:16px}
/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:14px;margin-bottom:14px;background:var(--card);overflow:hidden}
.faq-q{display:flex;align-items:center;gap:12px;padding:18px 22px;font-weight:700;font-size:16px;cursor:pointer}
.faq-q .q-icon{color:var(--cyan);font-weight:800}
.faq-a{padding:0 22px 20px;color:var(--muted);font-size:14.5px}
.faq-a ol{margin:10px 0 0 20px}
.faq-a ol li{margin-bottom:8px;list-style:decimal}
.faq-a b{color:var(--txt)}
/* CTA */
.cta{position:relative;background:linear-gradient(135deg,#12263f,#162c4a);border:1px solid var(--line);border-radius:24px;padding:60px 40px;text-align:center;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 300px at 50% 0,rgba(34,211,238,.2),transparent 70%)}
.cta h2{font-size:32px;margin-bottom:14px}
.cta p{color:var(--muted);margin-bottom:28px}
/* 页脚 */
.site-footer{background:var(--bg2);border-top:1px solid var(--line);padding:56px 0 30px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-grid h4{font-size:15px;margin-bottom:16px}
.footer-grid a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;transition:.2s}
.footer-grid a:hover{color:var(--cyan)}
.footer-bottom{border-top:1px solid var(--line);margin-top:40px;padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:13px}
.footer-bottom a{color:var(--muted)}
/* 面包屑 */
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--muted);margin:28px 0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .cur{color:var(--txt)}
/* 新闻列表 */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-5px);border-color:var(--cyan)}
.news-card img{height:180px;width:100%;object-fit:cover}
.news-card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-card .cat{font-size:12px;color:var(--amber);font-weight:700;margin-bottom:8px}
.news-card h3{font-size:17px;margin-bottom:10px}
.news-card h3 a:hover{color:var(--cyan)}
.news-card p{color:var(--muted);font-size:13.5px;flex:1}
.news-card .meta{margin-top:14px;font-size:12.5px;color:var(--muted)}
/* 新闻详情 */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px}
.article-main{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:40px}
.article-main h1{font-size:30px;margin-bottom:18px}
.article-meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:13.5px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:26px}
.article-main h2{font-size:22px;margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--cyan)}
.article-main p{margin-bottom:16px;font-size:15.5px}
.article-main img{border-radius:12px;margin:20px 0}
.article-main table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-main table th,.article-main table td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-main table th{background:var(--bg2)}
.toc{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:28px}
.toc h4{font-size:15px;margin-bottom:12px;color:var(--cyan)}
.toc a{display:block;color:var(--muted);font-size:14px;padding:5px 0}
.toc a:hover{color:var(--cyan)}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.article-nav a{font-size:14px;color:var(--muted)}
.article-nav a:hover{color:var(--cyan)}
/* 侧边栏 */
.sidebar{display:flex;flex-direction:column;gap:24px}
.widget{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.widget h4{font-size:16px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.widget a{display:block;color:var(--muted);font-size:14px;padding:7px 0;border-bottom:1px dashed var(--line)}
.widget a:hover{color:var(--cyan)}
.widget a:last-child{border-bottom:none}
.hot-item{display:flex;gap:10px;margin-bottom:14px;align-items:flex-start}
.hot-item .rank{font-size:22px;font-weight:800;color:rgba(34,211,238,.4);line-height:1}
.hot-item a{font-size:13.5px;color:var(--txt);padding:0;border:none}
.hot-item a:hover{color:var(--cyan)}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:50px}
/* 评论列表 */
.cmt{border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:14px;background:var(--bg2)}
.cmt-head{display:flex;align-items:center;gap:11px;margin-bottom:10px}
.cmt p{font-size:14px;color:var(--txt);margin:0}
/* 404 */
.error-page{min-height:70vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 24px}
.error-page .code{font-size:120px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.error-page h1{font-size:30px;margin:16px 0}
.error-page p{color:var(--muted);margin-bottom:30px}
.error-countdown{color:var(--amber);font-weight:700;font-size:20px;margin-bottom:24px}
/* 页脚统计注 */
.stat-note{font-size:11px;color:rgba(147,167,189,.5);text-align:center;margin-top:12px}
/* 响应式 */
@media(max-width:1024px){.hero-grid{grid-template-columns:1fr;gap:40px}.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}.dl-platforms{grid-template-columns:repeat(3,1fr)}.article-layout{grid-template-columns:1fr}.news-list{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.grid-3,.grid-4,.grid-2,.dl-platforms,.news-list,.footer-grid{grid-template-columns:1fr}.hero h1{font-size:32px}.section-title{font-size:26px}.nav-links{display:none}.article-main{padding:24px}.related{grid-template-columns:1fr}}