:root{--navy:#0b1c33;--navy2:#122b4d;--amber:#ffb400;--amber2:#ff9d00;--cyan:#0ea5e9;--bg:#f5f8fc;--card:#fff;--text:#1f2a3a;--muted:#5c6b82;--line:#e4eaf2;--green:#16a34a;--radius:16px;--shadow:0 8px 30px rgba(11,28,51,.08)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{line-height:1.3;color:var(--navy)}
/* 顶部导航 */
.topbar{background:var(--navy);color:#cfe0f5;font-size:13px;padding:8px 0}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.topbar a{color:#cfe0f5}
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:999;box-shadow:0 1px 0 rgba(11,28,51,.04)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:var(--navy)}
.logo img{width:40px;height:40px;border-radius:10px}
.logo .brand{color:var(--amber2)}
.nav-links{display:flex;align-items:center;gap:26px;font-weight:600;font-size:15px}
.nav-links a{color:var(--text);transition:color .2s}
.nav-links a:hover{color:var(--amber2)}
.lang-switch{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600}
.lang-switch a{padding:6px 12px;border-radius:20px;border:1px solid var(--line)}
.lang-switch a.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:50px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer}
.btn-amber{background:linear-gradient(135deg,var(--amber),var(--amber2));color:#3a2600}
.btn-amber:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,180,0,.35)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy2)}
.btn-outline{border:2px solid var(--navy);color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-lg{padding:15px 36px;font-size:16px}
/* Hero */
.hero{background:radial-gradient(1200px 500px at 80% -10%,rgba(14,165,233,.16),transparent),linear-gradient(135deg,var(--navy) 0%,var(--navy2) 60%,#0d2440 100%);color:#eaf2fb;padding:70px 0 80px;position:relative;overflow:hidden}
.hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,180,0,.14);border:1px solid rgba(255,180,0,.4);color:#ffd366;padding:6px 16px;border-radius:30px;font-size:13px;font-weight:600;margin-bottom:18px}
.hero h1{color:#fff;font-size:46px;font-weight:900;margin-bottom:16px;letter-spacing:-.5px}
.hero h1 span{color:var(--amber)}
.hero p{color:#bcd2ea;font-size:17px;max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:26px}
.hero-stats{display:flex;gap:36px;color:#cfe0f5}
.hero-stats b{display:block;font-size:26px;color:#fff}
.hero-stats span{font-size:13px;color:#9db8d8}
/* 客户端模拟器 */
.mockup{position:relative;display:flex;justify-content:center}
.device{width:min(360px,100%);background:linear-gradient(160deg,#0e2a4d,#081a30);border-radius:28px;padding:16px;border:1px solid rgba(255,255,255,.12);box-shadow:0 30px 60px rgba(0,0,0,.4)}
.device-bar{display:flex;align-items:center;gap:6px;padding-bottom:12px}
.dot{width:9px;height:9px;border-radius:50%}
.app-screen{background:#fff;border-radius:16px;overflow:hidden;color:var(--navy)}
.app-head{background:linear-gradient(135deg,var(--amber),var(--amber2));padding:18px;display:flex;align-items:center;gap:12px}
.app-logo{width:44px;height:44px;background:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:900;color:var(--amber2);font-size:22px}
.app-head h4{color:#3a2600;font-size:17px}
.app-head small{color:#7a5a10;font-size:12px}
.app-body{padding:18px}
.app-row{display:flex;align-items:center;justify-content:space-between;background:#f5f8fc;border-radius:12px;padding:13px 15px;margin-bottom:10px}
.app-row .lbl{font-size:13px;color:var(--muted)}
.app-row .val{font-weight:700;font-size:14px}
.app-row .val.green{color:var(--green)}
.app-meter{height:8px;background:#e4eaf2;border-radius:10px;overflow:hidden;margin:6px 0 2px}
.app-meter i{display:block;height:100%;width:72%;background:linear-gradient(90deg,var(--amber),var(--green));border-radius:10px}
.app-connect{width:100%;padding:14px;border-radius:12px;background:linear-gradient(135deg,var(--amber),var(--amber2));color:#3a2600;font-weight:800;text-align:center;border:none;font-size:15px}
.float-chip{position:absolute;background:#fff;border-radius:12px;padding:10px 14px;box-shadow:0 12px 30px rgba(0,0,0,.18);font-size:13px;font-weight:700;color:var(--navy)}
.fc1{top:-14px;right:-6px;animation:float 4s ease-in-out infinite}
.fc2{bottom:30px;left:-22px;animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
/* 通用区块 */
.section{padding:72px 0}
.section.alt{background:#fff}
.sec-head{text-align:center;max-width:720px;margin:0 auto 48px}
.sec-head .kicker{display:inline-block;color:var(--amber2);font-weight:700;font-size:14px;letter-spacing:2px;text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-size:34px;font-weight:800;margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16px}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-6{grid-template-columns:repeat(6,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s;box-shadow:var(--shadow)}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(11,28,51,.12);border-color:#d6e2f0}
.card .icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px;background:linear-gradient(135deg,#eef6ff,#e7f2ff)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card .num{font-size:36px;font-weight:900;color:var(--amber2);line-height:1}
/* 公告 */
.announce{background:linear-gradient(135deg,#fff7e6,#fff);border:1px solid #ffe0a3;border-radius:var(--radius);padding:22px 26px;display:flex;align-items:center;gap:16px}
.announce .tag{background:var(--amber2);color:#fff;padding:4px 12px;border-radius:6px;font-weight:700;font-size:13px;white-space:nowrap}
.announce p{color:#6b4a00;font-size:15px}
/* 信任背书 */
.trust{display:flex;justify-content:center;gap:50px;flex-wrap:wrap;align-items:center}
.trust-item{text-align:center}
.trust-item b{display:block;font-size:30px;color:var(--navy);font-weight:900}
.trust-item span{font-size:13px;color:var(--muted)}
/* 对比表 */
.compare-table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.compare-table thead th{background:var(--navy);color:#fff;font-weight:700}
.compare-table .me{background:#fff8e8}
.compare-table .ok{color:var(--green);font-weight:700}
.compare-table .no{color:#c0392b}
/* 新闻tab */
.tabs{display:flex;gap:10px;justify-content:center;margin-bottom:32px;flex-wrap:wrap}
.tab{display:inline-block;padding:10px 22px;border-radius:30px;font-weight:700;font-size:14px;background:#fff;border:1px solid var(--line);color:var(--text)}
.tab.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.news-card{display:flex;flex-direction:column;height:100%}
.news-card img{border-radius:10px;aspect-ratio:16/9;object-fit:cover;margin-bottom:16px;background:#eaf0f8}
.news-meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.news-card h3{font-size:17px;margin-bottom:8px}
.news-card p{color:var(--muted);font-size:14px;flex:1}
/* 评论 */
.review{position:relative}
.review .stars{color:var(--amber);font-size:16px;margin-bottom:10px;letter-spacing:2px}
.review p{font-size:15px;color:var(--text);margin-bottom:16px}
.review .who{display:flex;align-items:center;gap:10px}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--cyan));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.review .who small{color:var(--muted)}
/* 下载区 */
.download-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.platform{text-align:center;padding:26px 14px}
.platform .picon{font-size:40px;margin-bottom:12px}
.platform h4{font-size:16px;margin-bottom:6px}
.platform small{color:var(--muted);display:block;margin-bottom:14px;font-size:12px}
.platform .btn{width:100%;font-size:13px;padding:10px}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.faq-q{padding:18px 22px;font-weight:700;font-size:16px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:"+";font-size:22px;color:var(--amber2);font-weight:700}
.faq-a{padding:0 22px 20px;color:var(--muted);font-size:15px}
.faq-a ol{padding-left:20px;margin-top:8px}
.faq-a li{margin-bottom:6px}
/* CTA */
.cta{background:radial-gradient(900px 400px at 50% -20%,rgba(14,165,233,.2),transparent),linear-gradient(135deg,var(--navy),#0d2440);color:#eaf2fb;border-radius:24px;padding:60px 40px;text-align:center}
.cta h2{color:#fff;font-size:34px;margin-bottom:14px}
.cta p{color:#bcd2ea;margin-bottom:28px}
/* 页脚 */
.footer{background:var(--navy);color:#9db8d8;padding:56px 0 24px;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
.footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer a{display:block;color:#9db8d8;font-size:14px;margin-bottom:10px}
.footer a:hover{color:var(--amber)}
.footer .logo{color:#fff;margin-bottom:14px}
.footer p{font-size:13px;line-height:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;text-align:center;font-size:12px;color:#7a93b5}
.footer-bottom a{color:#9db8d8}
/* 面包屑 */
.breadcrumb{font-size:13px;color:var(--muted);padding:18px 0;background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb a{color:var(--cyan)}
.breadcrumb span{margin:0 8px}
/* 文章 */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.article{background:#fff;border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article h1{font-size:30px;margin-bottom:14px}
.article .meta{color:var(--muted);font-size:13px;margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.article .lead{font-size:17px;color:#33425c;background:#f5f8fc;padding:18px 22px;border-left:4px solid var(--amber);border-radius:8px;margin-bottom:24px}
.article h2{font-size:22px;margin:30px 0 14px;padding-left:14px;border-left:4px solid var(--cyan)}
.article p{margin-bottom:16px;color:#33425c;font-size:16px;text-align:justify}
.article img{border-radius:12px;margin:18px 0}
.article figcaption{font-size:12px;color:var(--muted);text-align:center;margin:-10px 0 20px}
.article .src{font-size:12px;color:var(--muted);background:#f5f8fc;padding:8px 14px;border-radius:6px}
.article .pager{display:flex;justify-content:space-between;gap:16px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.article .pager a{flex:1;padding:14px 18px;border:1px solid var(--line);border-radius:10px;font-size:14px}
.article .pager a:hover{border-color:var(--amber)}
.article .pager .next{text-align:right}
.sidebar{position:sticky;top:90px}
.side-widget{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:22px}
.side-widget h3{font-size:17px;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--amber)}
.side-widget ul{list-style:none}
.side-widget li{margin-bottom:12px;font-size:14px}
.side-widget li a{color:var(--text)}
.side-widget li a:hover{color:var(--amber2)}
.side-widget .cat-tag{display:inline-block;padding:5px 14px;border-radius:20px;background:#f0f5fb;font-size:13px;margin:0 6px 10px 0;color:var(--text)}
/* 响应式 */
@media(max-width:980px){.hero .container{grid-template-columns:1fr}.nav-links{display:none}.grid-2,.grid-3,.grid-4,.grid-6{grid-template-columns:1fr 1fr}.download-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid-2,.grid-3,.grid-4,.grid-6{grid-template-columns:1fr}.download-grid{grid-template-columns:1fr}.hero h1{font-size:34px}.section{padding:48px 0}}
/* 无障碍/SEO */
.skip{position:absolute;left:-9999px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}