:root{--p:#1266a8;--p-d:#0d4d82;--a:#2ab27b;--a-d:#1e8a5e;--bg:#f6f8fb;--card:#fff;--ink:#1a2330;--mut:#5a6b7f;--line:#e3e9f0;--hero:#0b1524;--warn:#f5a623;--danger:#e5484d;--radius:14px;--shadow:0 6px 24px rgba(18,40,72,.08);--maxw:1180px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:var(--p);text-decoration:none}
a:hover{color:var(--p-d)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink)}
.brand img{width:34px;height:34px;border-radius:8px}
.brand b{color:var(--p)}
.menu{display:flex;align-items:center;gap:6px;list-style:none}
.menu a{display:block;padding:8px 13px;border-radius:8px;color:#3a4758;font-size:15px;font-weight:500}
.menu a:hover{background:#eef3fa;color:var(--p)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:10px;font-weight:700;font-size:15px;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:.18s;white-space:nowrap}
.btn-p{background:var(--p);color:#fff!important}
.btn-p:hover{background:var(--p-d)}
.btn-a{background:var(--a);color:#fff!important}
.btn-a:hover{background:var(--a-d)}
.btn-o{background:#fff;color:var(--p)!important;border-color:var(--p)}
.btn-o:hover{background:#eef4fb}
.btn-lg{padding:15px 34px;font-size:17px}
.hero{background:radial-gradient(1200px 600px at 80% -10%,#163a5f 0%,var(--hero) 55%);color:#fff;padding:56px 0 64px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.hero h1{font-size:40px;line-height:1.22;font-weight:800;letter-spacing:-.5px;margin:14px 0 18px}
.hero h1 .hl{background:linear-gradient(90deg,#4ecb93,#2ab27b);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:#c6d2e0;font-size:17px;max-width:540px;margin-bottom:26px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-meta{display:flex;gap:22px;margin-top:28px;flex-wrap:wrap}
.hero-meta span{display:flex;align-items:center;gap:8px;color:#b9c7d6;font-size:14px}
.hero-meta b{color:#fff}
.trust-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);padding:7px 14px;border-radius:999px;font-size:13px;color:#d7e2ee}
/* 客户端模拟器 */
.sim{background:#0f1c2e;border:1px solid rgba(255,255,255,.12);border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,.45);overflow:hidden}
.sim-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#0a1422;border-bottom:1px solid rgba(255,255,255,.08)}
.sim-dot{width:11px;height:11px;border-radius:50%}
.sim-title{color:#8fa1b8;font-size:12px;margin-left:8px}
.sim-body{padding:22px}
.sim-conn{display:flex;align-items:center;justify-content:space-between;background:linear-gradient(90deg,#0e2a3e,#123f2e);border:1px solid rgba(74,203,147,.25);border-radius:12px;padding:16px 18px;margin-bottom:18px}
.sim-conn .st{color:#8fd6b8;font-size:13px}
.sim-conn .ip{font-weight:800;font-size:22px;letter-spacing:.5px;color:#fff}
.sim-conn .lock{width:30px;height:30px;background:var(--a);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff}
.sim-flag{display:flex;align-items:center;gap:10px;background:#15253a;border-radius:10px;padding:12px 14px;margin-bottom:10px;border:1px solid rgba(255,255,255,.06)}
.sim-flag .f{width:26px;height:18px;border-radius:3px;background:linear-gradient(135deg,#2b6cb0,#48bb78)}
.sim-flag .nm{color:#fff;font-weight:600;font-size:14px}
.sim-flag .sp{color:#7f93ab;font-size:12px;margin-left:auto}
.sim-btn{width:100%;text-align:center;background:var(--a);color:#fff;padding:14px;border-radius:10px;font-weight:700;font-size:15px}
/* 通用 section */
.sec{padding:64px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 42px}
.sec-head h2{font-size:30px;font-weight:800;letter-spacing:-.4px;margin-bottom:12px}
.sec-head p{color:var(--mut);font-size:16px}
.sec-tag{display:inline-block;background:#e8f3fb;color:var(--p);font-size:13px;font-weight:700;padding:5px 14px;border-radius:999px;margin-bottom:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.feat-ic{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;background:linear-gradient(135deg,#e3f0fc,#d9f3e8)}
.feat h3{font-size:19px;margin-bottom:10px}
.feat p{color:var(--mut);font-size:15px}
/* 对比表 */
.cmp{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);font-size:14px}
.cmp th,.cmp td{padding:15px 16px;text-align:center;border-bottom:1px solid var(--line)}
.cmp th{background:#0b1524;color:#fff;font-weight:700}
.cmp td:first-child,.cmp th:first-child{text-align:left;font-weight:600}
.cmp .yes{color:var(--a);font-weight:700}
.cmp .no{color:var(--danger)}
.cmp .me{background:#eaf6f0}
.cmp-wrap{overflow-x:auto}
/* 公告 */
.notice{background:linear-gradient(90deg,#fff7e6,#fff);border:1px solid #ffe3b3;border-radius:var(--radius);padding:18px 22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.notice .ic{background:var(--warn);color:#fff;border-radius:8px;padding:6px 12px;font-weight:800;font-size:13px;flex-shrink:0}
.notice p{color:#6b5310;font-size:15px}
/* 评论 */
.rev{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.rev .stars{color:#f5a623;letter-spacing:2px;font-size:15px}
.rev blockquote{color:#3a4758;font-size:15px;margin:12px 0;font-style:italic}
.rev .who{display:flex;align-items:center;gap:10px}
.rev .av{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--p),var(--a));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.rev .who b{font-size:14px}
.rev .who span{color:var(--mut);font-size:12px}
/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:14px;overflow:hidden}
.faq-q{padding:18px 22px;font-weight:700;font-size:16px;color:var(--ink);display:block}
.faq-a{padding:0 22px 20px;color:#43536a;font-size:15px}
.faq-a ol{padding-left:22px;margin:10px 0}
.faq-a li{margin-bottom:8px}
.faq-a b{color:var(--p)}
/* 下载卡片 */
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center;box-shadow:var(--shadow)}
.dl-card .os{width:56px;height:56px;margin:0 auto 14px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:13px;background:linear-gradient(135deg,var(--p),var(--a))}
.dl-card h3{font-size:18px;margin-bottom:6px}
.dl-card p{color:var(--mut);font-size:13px;margin-bottom:16px}
/* footer */
.footer{background:#0b1524;color:#b9c7d6;padding:54px 0 30px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer ul{list-style:none}
.footer ul li{margin-bottom:10px}
.footer a{color:#8fa1b8;font-size:14px}
.footer a:hover{color:#fff}
.friend{display:flex;flex-wrap:wrap;gap:8px 18px;padding:16px 0;border-top:1px solid rgba(255,255,255,.1);margin-top:28px}
.friend a{color:#7f93ab;font-size:13px}
.footer-bottom{text-align:center;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);color:#6c7f96;font-size:13px;margin-top:20px}
/* 面包屑 */
.crumb{font-size:14px;color:var(--mut);padding:18px 0 0}
.crumb a{color:var(--p)}
.crumb span{color:#98a6b8;margin:0 6px}
/* 新闻 */
.art{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.art h1{font-size:28px;line-height:1.35;margin:14px 0}
.art-meta{color:var(--mut);font-size:13px;display:flex;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.art h2{font-size:22px;margin:30px 0 14px;padding-left:12px;border-left:4px solid var(--p)}
.art p{margin-bottom:16px;color:#33425a;font-size:16px}
.art table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.art table th,.art table td{border:1px solid var(--line);padding:11px 13px;text-align:left}
.art table th{background:#eef3fa}
.news-grid{display:grid;grid-template-columns:1fr 300px;gap:28px;align-items:start}
.side{position:sticky;top:80px}
.side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:20px;box-shadow:var(--shadow)}
.side-box h3{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--p)}
.side-box ul{list-style:none}
.side-box li{margin-bottom:11px;padding-bottom:11px;border-bottom:1px dashed var(--line)}
.side-box li:last-child{border-bottom:none}
.side-box a{font-size:14px;color:#33425a}
.side-box a:hover{color:var(--p)}
.news-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.18s}
.news-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(18,40,72,.14)}
.news-card .nc-body{padding:20px}
.news-card h3{font-size:18px;margin:10px 0;color:var(--ink);line-height:1.4}
.news-card p{color:var(--mut);font-size:14px}
.nc-tag{display:inline-block;background:#e8f3fb;color:var(--p);font-size:12px;padding:3px 10px;border-radius:999px}
.nc-date{color:#98a6b8;font-size:12px;margin-left:8px}
.nc-img{height:160px;background:linear-gradient(135deg,#163a5f,#2ab27b);display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700}
.prevnext{display:flex;justify-content:space-between;gap:14px;margin-top:24px}
.prevnext a{flex:1;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 18px;font-size:14px}
.prevnext a:hover{border-color:var(--p)}
.toc{background:#f6f9fc;border:1px solid var(--line);border-radius:10px;padding:18px 22px;margin:18px 0}
.toc h4{font-size:15px;margin-bottom:10px;color:var(--p)}
.toc ol{padding-left:20px}
.toc li{margin-bottom:6px;font-size:14px}
.pagination{display:flex;gap:8px;justify-content:center;margin-top:30px}
.pagination a{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:#fff;font-weight:600}
.pagination a.on{background:var(--p);color:#fff;border-color:var(--p)}
@media(max-width:960px){.hero-grid{grid-template-columns:1fr}.g3,.g2,.g4{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.news-grid{grid-template-columns:1fr}.side{position:static}.menu{display:none}.hero h1{font-size:30px}}
@media(max-width:560px){.g3,.g2,.g4{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}