/* ===== 旋风加速器 - 全局设计系统 ===== */
:root{
  --bg:#0b1220;--bg-2:#0e1729;--panel:#111c31;--card:#16243c;--card-2:#1a2b46;
  --primary:#22d3ee;--primary-2:#38bdf8;--accent:#8b5cf6;--cta:#ff7a3d;--cta-2:#ff5f2e;
  --text:#e8eef8;--muted:#94a5bf;--muted-2:#64748b;
  --border:#1e2d49;--border-2:#263a5c;
  --green:#34d399;--amber:#fbbf24;--red:#f87171;
  --radius:16px;--radius-sm:10px;
  --shadow:0 10px 40px rgba(0,0,0,.35);
  --grad-cta:linear-gradient(135deg,#ff7a3d,#ff4f2e);
  --grad-primary:linear-gradient(135deg,#22d3ee,#8b5cf6);
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-2)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ===== 顶部导航 ===== */
.header{position:sticky;top:0;z-index:100;background:rgba(11,18,32,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--text)}
.nav-logo img{width:34px;height:34px;border-radius:8px}
.nav-logo span b{background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-right{display:flex;align-items:center;gap:12px}
.lang-switch{display:flex;border:1px solid var(--border);border-radius:20px;overflow:hidden}
.lang-switch a{padding:4px 12px;font-size:13px;color:var(--muted)}
.lang-switch a.active{background:var(--primary);color:#06202b;font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:24px;font-weight:600;font-size:15px;line-height:1;white-space:nowrap;transition:transform .15s,box-shadow .15s,opacity .15s}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad-primary);color:#04212c}
.btn-primary:hover{color:#04212c;box-shadow:0 8px 24px rgba(34,211,238,.35)}
.btn-cta{background:var(--grad-cta);color:#fff}
.btn-cta:hover{color:#fff;box-shadow:0 8px 24px rgba(255,122,61,.4)}
.btn-ghost{background:transparent;border:1px solid var(--border-2);color:var(--text)}
.btn-ghost:hover{color:var(--text);border-color:var(--primary)}
.btn-sm{padding:8px 16px;font-size:13px;border-radius:20px}
.btn-lg{padding:14px 30px;font-size:16px;border-radius:28px}

/* ===== Hero ===== */
.hero{position:relative;padding:64px 0 72px;overflow:hidden;background:radial-gradient(1200px 500px at 20% -10%,rgba(34,211,238,.14),transparent 60%),radial-gradient(900px 500px at 90% 0%,rgba(139,92,246,.14),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:20px;background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3);color:var(--primary);font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:46px;letter-spacing:-1px;margin-bottom:18px}
.hero h1 .grad{background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;color:var(--muted);margin-bottom:28px;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap}
.hero-stats .stat b{font-size:30px;display:block;background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .stat span{color:var(--muted);font-size:14px}

/* 客户端模拟器 */
.simulator{position:relative}
.sim-window{background:var(--panel);border:1px solid var(--border-2);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.sim-titlebar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg-2);border-bottom:1px solid var(--border)}
.sim-titlebar i{width:12px;height:12px;border-radius:50%;display:inline-block}
.sim-titlebar i.r{background:#ff5f57}.sim-titlebar i.y{background:#febc2e}.sim-titlebar i.g{background:#28c840}
.sim-titlebar span{margin-left:8px;color:var(--muted);font-size:13px}
.sim-body{padding:22px}
.sim-status{display:flex;align-items:center;gap:12px;padding:16px;border-radius:12px;background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(139,92,246,.1));border:1px solid var(--border);margin-bottom:16px}
.sim-status .dot{width:14px;height:14px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(52,211,153,.2);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(52,211,153,.2)}50%{box-shadow:0 0 0 8px rgba(52,211,153,.06)}}
.sim-status b{font-size:16px}
.sim-status small{color:var(--muted);display:block}
.sim-row{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-bottom:1px solid var(--border);font-size:14px}
.sim-row span{color:var(--muted)}
.sim-row b{color:var(--text)}
.sim-row .val{color:var(--green);font-variant-numeric:tabular-nums}
.sim-big-btn{display:flex;align-items:center;justify-content:center;width:100%;margin-top:18px;padding:16px;border-radius:14px;background:var(--grad-cta);color:#fff;font-weight:700;font-size:17px;transition:transform .15s,box-shadow .15s}
.sim-big-btn:hover{color:#fff;transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,122,61,.4)}

/* ===== 通用区块 ===== */
.section{padding:72px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-head .kicker{display:inline-block;padding:5px 14px;border-radius:20px;background:rgba(139,92,246,.12);border:1px solid rgba(139,92,246,.3);color:#c4b5fd;font-size:13px;font-weight:600;margin-bottom:14px}
.section-head h2{font-size:34px;letter-spacing:-.5px;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}

/* 卖点 */
.sellpoints{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sellpoint{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .2s,border-color .2s}
.sellpoint:hover{transform:translateY(-4px);border-color:var(--primary)}
.sellpoint .ico{width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;background:rgba(34,211,238,.12)}
.sellpoint h3{font-size:19px;margin-bottom:8px}
.sellpoint p{color:var(--muted);font-size:14.5px}

/* 核心功能 */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{position:relative;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;overflow:hidden}
.feature:hover{border-color:var(--primary)}
.feature .num{position:absolute;right:18px;top:14px;font-size:44px;font-weight:800;color:rgba(34,211,238,.1)}
.feature .ico{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px;background:var(--grad-primary);color:#06202b}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14.5px}

/* 公告 */
.announce{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:8px 22px;margin-bottom:0}
.announce-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border)}
.announce-item:last-child{border-bottom:none}
.announce-item .tag{padding:3px 10px;border-radius:6px;font-size:12px;font-weight:600;white-space:nowrap}
.tag-new{background:rgba(255,122,61,.15);color:var(--cta)}
.tag-up{background:rgba(34,211,238,.15);color:var(--primary)}
.tag-info{background:rgba(139,92,246,.15);color:#c4b5fd}
.announce-item p{font-size:14.5px}
.announce-item time{color:var(--muted-2);font-size:13px;white-space:nowrap}

/* 信任背书 */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-item{text-align:center;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 16px}
.trust-item b{font-size:32px;display:block;background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
.trust-item span{color:var(--muted);font-size:14px}

/* 应用场景 */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.scene h3{font-size:18px;margin-bottom:8px}
.scene p{color:var(--muted);font-size:14.5px}
.scene .emo{font-size:28px;margin-bottom:12px}

/* 对比表 */
.compare-wrap{overflow-x:auto}
.compare{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;min-width:640px}
.compare th,.compare td{padding:16px 18px;text-align:center;border-bottom:1px solid var(--border);font-size:14.5px}
.compare th{background:var(--bg-2);font-size:15px}
.compare td:first-child,.compare th:first-child{text-align:left;color:var(--muted)}
.compare tr:last-child td{border-bottom:none}
.compare .ok{color:var(--green);font-weight:700}
.compare .no{color:var(--muted-2)}
.compare .hl td{background:rgba(34,211,238,.06)}

/* 新闻Tab */
.tabs{display:flex;justify-content:center;gap:10px;margin-bottom:28px}
.tabs label{display:inline-block;padding:9px 20px;border-radius:22px;border:1px solid var(--border);color:var(--muted);font-size:14px;cursor:pointer;transition:.2s}
.tabs input{display:none}
#tab1:checked~.tabs label[for=tab1],#tab2:checked~.tabs label[for=tab2],#tab3:checked~.tabs label[for=tab3]{background:var(--primary);color:#06202b;border-color:var(--primary);font-weight:600}
.tab-panel{display:none}
#tab1:checked~.tab-content .tab-panel.p1,#tab2:checked~.tab-content .tab-panel.p2,#tab3:checked~.tab-content .tab-panel.p3{display:grid}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .2s,border-color .2s}
.news-card:hover{transform:translateY(-4px);border-color:var(--primary)}
.news-card img{width:100%;height:150px;object-fit:cover}
.news-card .body{padding:18px}
.news-card .cat{font-size:12px;color:var(--primary);font-weight:600}
.news-card h3{font-size:16px;margin:8px 0;line-height:1.5}
.news-card h3 a{color:var(--text)}
.news-card h3 a:hover{color:var(--primary)}
.news-card .meta{color:var(--muted-2);font-size:13px}

/* 用户评论 */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.review .stars{color:var(--amber);font-size:14px;margin-bottom:10px}
.review p{color:var(--text);font-size:14.5px;margin-bottom:14px}
.review .user{display:flex;align-items:center;gap:10px}
.review .avatar{width:36px;height:36px;border-radius:50%;background:var(--grad-primary);display:flex;align-items:center;justify-content:center;color:#06202b;font-weight:700}
.review .user b{font-size:14px;display:block}
.review .user span{font-size:12px;color:var(--muted-2)}

/* 下载区 */
.download{background:radial-gradient(900px 400px at 50% 0%,rgba(34,211,238,.12),transparent 60%)}
.platforms{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.platform{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 16px;text-align:center;transition:transform .2s,border-color .2s}
.platform:hover{transform:translateY(-4px);border-color:var(--primary)}
.platform .pico{width:52px;height:52px;margin:0 auto 14px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;background:var(--bg-2);border:1px solid var(--border)}
.platform b{display:block;font-size:16px;margin-bottom:4px}
.platform span{font-size:12px;color:var(--muted-2);display:block;margin-bottom:14px}
.platform .btn{width:100%}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden}
.faq-item summary{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;cursor:pointer;font-weight:600;font-size:16px;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--primary);transition:.2s}
.faq-item[open] summary::after{content:"−"}
.faq-item .faq-body{padding:0 22px 20px;color:var(--muted);font-size:14.5px}
.faq-item .faq-body ol{padding-left:20px;list-style:decimal}
.faq-item .faq-body ol li{margin-bottom:8px}
.faq-item .faq-body p{margin-bottom:10px}

/* CTA */
.cta{background:linear-gradient(135deg,#0e1e3a,#161534);border:1px solid var(--border-2);border-radius:24px;padding:56px 40px;text-align:center}
.cta h2{font-size:32px;margin-bottom:14px}
.cta p{color:var(--muted);margin-bottom:28px}
.cta .hero-cta{justify-content:center}

/* 页脚 */
.footer{border-top:1px solid var(--border);padding:56px 0 0;background:var(--bg-2)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer h4{font-size:15px;margin-bottom:16px}
.footer a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px}
.footer a:hover{color:var(--primary)}
.footer .brand p{color:var(--muted);font-size:14px;margin-top:12px;max-width:280px}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0;text-align:center;color:var(--muted-2);font-size:13px}
.footer-bottom a{display:inline;color:var(--muted-2)}

/* 面包屑 */
.crumbs{display:flex;align-items:center;gap:8px;padding:18px 0;color:var(--muted);font-size:14px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary)}
.crumbs span{color:var(--muted-2)}

/* 内页 */
.page-hero{padding:48px 0 40px;text-align:center;background:radial-gradient(900px 400px at 50% -10%,rgba(34,211,238,.12),transparent 60%)}
.page-hero h1{font-size:38px;margin-bottom:12px}
.page-hero p{color:var(--muted);max-width:640px;margin:0 auto}

/* 文章详情 */
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:36px;padding:20px 0 60px}
.article-main{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:40px;min-width:0}
.article-main h1{font-size:30px;line-height:1.4;margin-bottom:16px}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;color:var(--muted-2);font-size:13px;padding-bottom:18px;border-bottom:1px solid var(--border);margin-bottom:22px}
.article-main h2{font-size:22px;margin:30px 0 14px;padding-left:14px;border-left:4px solid var(--primary)}
.article-main h3{font-size:18px;margin:22px 0 10px}
.article-main p{margin-bottom:16px;color:#cbd5e1;font-size:15.5px}
.article-main img{border-radius:12px;margin:20px 0}
.article-main figcaption{text-align:center;color:var(--muted-2);font-size:13px;margin:-8px 0 18px}
.article-main table{width:100%;border-collapse:collapse;margin:18px 0}
.article-main th,.article-main td{border:1px solid var(--border-2);padding:11px 14px;text-align:left;font-size:14px}
.article-main th{background:var(--bg-2)}
.article-main blockquote{border-left:4px solid var(--primary);padding:14px 18px;background:rgba(34,211,238,.06);border-radius:0 10px 10px 0;margin:18px 0;color:var(--text)}
.article-nav{display:flex;justify-content:space-between;gap:14px;margin-top:32px;padding-top:22px;border-top:1px solid var(--border)}
.article-nav a{flex:1;background:var(--card-2);border:1px solid var(--border);border-radius:12px;padding:14px 18px;font-size:14px;color:var(--text)}
.article-nav a:hover{color:var(--primary);border-color:var(--primary)}
.article-nav a.next{text-align:right}
.article-nav .back{text-align:center;flex:0 0 auto}
.sidebar .widget{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin-bottom:20px}
.sidebar h4{font-size:16px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.sidebar .hot-item{display:flex;gap:10px;margin-bottom:14px}
.sidebar .hot-item .n{width:24px;height:24px;border-radius:6px;background:var(--bg-2);color:var(--primary);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sidebar .hot-item a{color:var(--text);font-size:14px;line-height:1.5}
.sidebar .hot-item a:hover{color:var(--primary)}
.sidebar .cat-item{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--border);font-size:14px}
.sidebar .cat-item a{color:var(--text)}
.sidebar .cat-item span{color:var(--muted-2)}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}

/* 目录 */
.toc{background:var(--card-2);border:1px solid var(--border);border-radius:12px;padding:18px 22px;margin-bottom:24px}
.toc b{display:block;margin-bottom:10px;font-size:14px}
.toc a{display:block;color:var(--muted);font-size:14px;padding:4px 0}
.toc a:hover{color:var(--primary)}

/* 404 */
.err404{min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:60px 20px}
.err404 h1{font-size:120px;line-height:1;background:var(--grad-primary);-webkit-background-clip:text;background-clip:text;color:transparent}
.err404 h2{font-size:26px;margin:10px 0 16px}
.err404 p{color:var(--muted);margin-bottom:26px}

/* 响应式 */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .features,.sellpoints,.scenes,.news-grid,.reviews,.related{grid-template-columns:repeat(2,1fr)}
  .trust{grid-template-columns:repeat(2,1fr)}
  .platforms{grid-template-columns:repeat(3,1fr)}
  .article-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .nav-links{display:none}
  .hero h1{font-size:34px}
  .features,.sellpoints,.scenes,.news-grid,.reviews,.related,.platforms,.trust{grid-template-columns:1fr}
  .section{padding:50px 0}
  .article-main{padding:24px}
}