:root{--bg:#0b1230;--bg2:#0e1738;--card:#101a3e;--card2:#15224f;--line:#233061;--cyan:#00e5ff;--violet:#7c4dff;--amber:#ffb300;--green:#00e676;--pink:#ff4081;--txt:#e6ecff;--sub:#9aa8d8;--muted:#6b77a8;--r:16px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--cyan);text-decoration:none;transition:color .2s}
a:hover{color:#fff}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:76px 0}
.section-title{font-size:34px;font-weight:800;text-align:center;letter-spacing:.5px}
.section-sub{text-align:center;color:var(--sub);margin:14px auto 48px;max-width:640px;font-size:17px}
.grad-text{background:linear-gradient(90deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 34px;border-radius:999px;font-weight:700;font-size:17px;cursor:pointer;border:2px solid transparent}
.btn-primary{background:linear-gradient(90deg,var(--cyan),var(--violet));color:#06101f;box-shadow:0 8px 30px rgba(0,229,255,.28)}
.btn-primary:hover{color:#06101f;box-shadow:0 10px 40px rgba(0,229,255,.45);transform:translateY(-1px)}
.btn-ghost{border-color:var(--cyan);color:var(--cyan);background:transparent}
.btn-ghost:hover{background:rgba(0,229,255,.1)}
.btn-amber{background:linear-gradient(90deg,var(--amber),#ff6d00);color:#1a1200}
.btn-amber:hover{color:#1a1200;box-shadow:0 10px 34px rgba(255,179,0,.4);transform:translateY(-1px)}
/* 顶部导航 */
.topbar{position:sticky;top:0;z-index:100;background:rgba(11,18,48,.9);backdrop-filter:blur(12px);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:12px;font-weight:800;font-size:20px;color:#fff}
.brand img{width:40px;height:40px;border-radius:10px}
.brand small{display:block;font-size:11px;color:var(--sub);font-weight:400;letter-spacing:1px}
.nav-links{display:flex;gap:4px;list-style:none}
.nav-links a{display:block;padding:9px 16px;border-radius:10px;color:var(--txt);font-size:15px}
.nav-links a:hover{background:rgba(0,229,255,.1);color:var(--cyan)}
.nav-cta{margin-left:14px}
/* Hero */
.hero{position:relative;overflow:hidden;padding:64px 0 70px;background:radial-gradient(ellipse at 20% 10%,rgba(124,77,255,.22),transparent 50%),radial-gradient(ellipse at 85% 20%,rgba(0,229,255,.18),transparent 50%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.hero h1{font-size:46px;line-height:1.25;font-weight:900;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero p.lead{color:var(--sub);font-size:18px;margin-bottom:30px;max-width:540px}
.hero-stats{display:flex;gap:34px;margin:34px 0}
.hero-stats div b{display:block;font-size:30px;font-weight:800;color:#fff}
.hero-stats div span{color:var(--muted);font-size:14px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
/* 客户端模拟器 */
.simulator{position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:0 30px 80px rgba(0,0,0,.5);overflow:hidden}
.sim-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--card2);border-bottom:1px solid var(--line)}
.sim-bar i{width:12px;height:12px;border-radius:50%;display:inline-block}
.sim-bar i:nth-child(1){background:#ff5f57}.sim-bar i:nth-child(2){background:#febc2e}.sim-bar i:nth-child(3){background:#28c840}
.sim-title{color:var(--sub);font-size:13px;margin-left:10px}
.sim-body{padding:24px}
.sim-status{display:flex;align-items:center;gap:14px;padding:16px;background:var(--bg2);border-radius:12px;margin-bottom:16px}
.sim-dot{width:14px;height:14px;border-radius:50%;background:var(--green);box-shadow:0 0 14px var(--green)}
.sim-status b{color:#fff}
.sim-status span{color:var(--sub);font-size:14px}
.sim-node{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.sim-node div{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center}
.sim-node div b{display:block;color:#fff;font-size:15px}
.sim-node div span{color:var(--green);font-size:13px}
.sim-meter{background:var(--bg2);border-radius:12px;padding:16px;margin-bottom:16px}
.sim-meter .row{display:flex;justify-content:space-between;color:var(--sub);font-size:13px;margin-bottom:8px}
.sim-bar-line{height:10px;background:#1b2650;border-radius:8px;overflow:hidden}
.sim-bar-fill{height:100%;background:linear-gradient(90deg,var(--cyan),var(--green));width:92%;border-radius:8px;box-shadow:0 0 12px var(--cyan)}
.sim-connect{width:100%;padding:14px;border-radius:12px;background:linear-gradient(90deg,var(--cyan),var(--violet));color:#06101f;font-weight:800;text-align:center;border:none;cursor:pointer;font-size:16px}
.sim-foot{text-align:center;color:var(--muted);font-size:12px;margin-top:12px}
/* 公告区 */
.notice{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.notice .tag{background:var(--amber);color:#1a1200;padding:3px 12px;border-radius:6px;font-size:13px;font-weight:700;white-space:nowrap}
.notice p{color:var(--txt);flex:1;min-width:200px}
/* 功能卡片 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-5px);border-color:var(--cyan)}
.card .ico{width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:18px;background:rgba(0,229,255,.12);color:var(--cyan)}
.card h3{font-size:20px;margin-bottom:12px;color:#fff}
.card p{color:var(--sub);font-size:15px}
/* 对比表 */
.compare-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--r);overflow:hidden}
.compare-table th,.compare-table td{padding:16px 18px;text-align:center;border-bottom:1px solid var(--line);font-size:15px}
.compare-table th{background:var(--card2);color:#fff;font-weight:700}
.compare-table td:first-child,.compare-table th:first-child{text-align:left}
.compare-table .win{color:var(--green);font-weight:700}
.compare-table .me{background:rgba(0,229,255,.07)}
.compare-table tr:hover td{background:rgba(0,229,255,.04)}
/* Tab 新闻 */
.tabs{display:flex;gap:10px;justify-content:center;margin-bottom:36px;flex-wrap:wrap}
.tab{display:inline-block;padding:11px 26px;border-radius:999px;background:var(--card);border:1px solid var(--line);color:var(--sub);font-weight:600;font-size:15px}
.tab:hover{color:var(--cyan);border-color:var(--cyan)}
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .25s}
.news-item:hover{transform:translateY(-5px)}
.news-item .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--card2)}
.news-item .thumb img{width:100%;height:100%;object-fit:cover}
.news-item .body{padding:18px}
.news-item .date{color:var(--muted);font-size:12px}
.news-item h3{font-size:17px;margin:8px 0;line-height:1.45}
.news-item h3 a{color:#fff}
.news-item h3 a:hover{color:var(--cyan)}
/* 评论 */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px}
.review .stars{color:var(--amber);letter-spacing:2px;margin-bottom:12px;font-size:18px}
.review p{color:var(--txt);font-size:15px;margin-bottom:16px}
.review .who{display:flex;align-items:center;gap:12px}
.review .who .avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--violet));display:flex;align-items:center;justify-content:center;color:#06101f;font-weight:800}
.review .who b{color:#fff;font-size:14px}
.review .who span{color:var(--muted);font-size:12px}
/* 下载区 */
.download-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 16px;text-align:center;transition:transform .25s}
.dl-item:hover{transform:translateY(-5px);border-color:var(--cyan)}
.dl-item .os{font-size:40px;margin-bottom:12px}
.dl-item b{display:block;color:#fff;font-size:16px;margin-bottom:14px}
.dl-item a{display:inline-block;padding:9px 22px;border-radius:999px;background:var(--cyan);color:#06101f;font-weight:700;font-size:14px}
.dl-item a:hover{background:#fff}
/* 信任背书 */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.trust{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;text-align:center}
.trust .ico{font-size:38px;margin-bottom:12px}
.trust b{display:block;color:#fff;margin-bottom:6px}
.trust span{color:var(--sub);font-size:14px}
/* 应用场景 */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.scene .ico{font-size:34px;margin-bottom:14px}
.scene h3{font-size:19px;color:#fff;margin-bottom:10px}
.scene p{color:var(--sub);font-size:15px}
/* FAQ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
details.faq{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
details.faq summary{cursor:pointer;padding:20px 24px;font-weight:700;color:#fff;font-size:17px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:24px;color:var(--cyan);font-weight:400}
details.faq[open] summary::after{content:"−"}
details.faq .faq-body{padding:0 24px 22px;color:var(--sub);font-size:15px}
details.faq .faq-body ol,.faq-body ul{padding-left:20px;margin:8px 0}
details.faq .faq-body li{margin:6px 0}
/* CTA */
.cta{background:linear-gradient(120deg,#0e1738,#1a2a6c);border:1px solid var(--line);border-radius:24px;padding:56px 40px;text-align:center;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 0,rgba(0,229,255,.25),transparent 60%)}
.cta h2{font-size:34px;font-weight:800;color:#fff;margin-bottom:14px;position:relative}
.cta p{color:var(--sub);margin-bottom:28px;position:relative}
.cta .btn{position:relative}
/* 页脚 */
footer{background:#080d22;border-top:1px solid var(--line);padding:56px 0 30px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:34px}
.foot-col h4{color:#fff;margin-bottom:16px;font-size:16px}
.foot-col a{display:block;color:var(--sub);font-size:14px;margin:8px 0}
.foot-col a:hover{color:var(--cyan)}
.foot-brand{color:var(--sub);font-size:14px;margin-top:12px;max-width:320px}
.friend-links{border-top:1px solid var(--line);padding-top:22px;margin-bottom:20px}
.friend-links h4{color:#fff;font-size:14px;margin-bottom:12px}
.friend-links .links{display:flex;flex-wrap:wrap;gap:8px 18px}
.friend-links a{color:var(--muted);font-size:13px}
.friend-links a:hover{color:var(--cyan)}
.copyright{border-top:1px solid var(--line);padding-top:20px;text-align:center;color:var(--muted);font-size:13px}
/* 面包屑 */
.breadcrumb{background:var(--bg2);border-bottom:1px solid var(--line);padding:16px 0;font-size:14px;color:var(--muted)}
.breadcrumb a{color:var(--sub)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb span{color:var(--muted);margin:0 8px}
/* 页面头 */
.page-head{padding:56px 0 36px;text-align:center;background:radial-gradient(ellipse at 50% 0,rgba(0,229,255,.12),transparent 60%)}
.page-head h1{font-size:38px;font-weight:900;color:#fff;margin-bottom:14px}
.page-head p{color:var(--sub);max-width:680px;margin:0 auto}
/* 新闻详情 */
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:40px;padding:40px 0}
.article-main{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:40px}
.article-main h1{font-size:32px;font-weight:800;color:#fff;line-height:1.4;margin-bottom:18px}
.article-meta{display:flex;gap:18px;color:var(--muted);font-size:14px;margin-bottom:24px;flex-wrap:wrap}
.article-main .cover{border-radius:14px;overflow:hidden;margin-bottom:28px}
.article-main .toc{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:20px 24px;margin-bottom:28px}
.article-main .toc h2{font-size:18px;color:var(--cyan);margin-bottom:12px}
.article-main .toc ol{padding-left:22px;color:var(--sub)}
.article-main .toc a{color:var(--sub)}
.article-main .toc a:hover{color:var(--cyan)}
.article-main h2{font-size:26px;color:#fff;margin:34px 0 16px;padding-left:14px;border-left:4px solid var(--cyan)}
.article-main h3{font-size:20px;color:#fff;margin:24px 0 12px}
.article-main p{margin:14px 0;color:#cfd8ff;font-size:16px}
.article-main ul,.article-main ol{margin:14px 0;padding-left:24px;color:#cfd8ff}
.article-main li{margin:8px 0}
.article-main blockquote{border-left:3px solid var(--violet);background:var(--bg2);padding:16px 20px;border-radius:8px;color:var(--sub);margin:20px 0;font-style:italic}
.article-main .body-img{border-radius:12px;overflow:hidden;margin:24px 0}
.article-main .body-img figcaption{color:var(--muted);font-size:13px;text-align:center;margin-top:8px}
.article-pager{display:flex;justify-content:space-between;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.article-pager a{color:var(--sub);font-size:15px}
.article-pager a:hover{color:var(--cyan)}
.sidebar h3{color:#fff;font-size:18px;margin-bottom:16px}
.side-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:24px}
.side-box ul{list-style:none}
.side-box li{padding:9px 0;border-bottom:1px solid var(--line)}
.side-box li:last-child{border:none}
.side-box li a{color:var(--sub);font-size:14px}
.side-box li a:hover{color:var(--cyan)}
/* 404 */
.page-404{min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center;flex-direction:column;padding:60px 20px}
.page-404 .code{font-size:120px;font-weight:900;line-height:1;background:linear-gradient(90deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.page-404 h1{font-size:28px;color:#fff;margin:18px 0 12px}
.page-404 p{color:var(--sub);margin-bottom:28px}
/* sitemap */
.sitemap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sitemap-box{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.sitemap-box h3{color:#fff;margin-bottom:14px;font-size:17px}
.sitemap-box a{display:block;color:var(--sub);font-size:14px;margin:7px 0}
.sitemap-box a:hover{color:var(--cyan)}
/* 响应式 */
@media(max-width:960px){.hero-grid,.article-layout{grid-template-columns:1fr}.grid-3,.news-list,.reviews,.scene-grid{grid-template-columns:repeat(2,1fr)}.download-grid{grid-template-columns:repeat(2,1fr)}.trust-grid{grid-template-columns:repeat(2,1fr)}.foot-grid{grid-template-columns:1fr 1fr}.nav-links{display:none}}
@media(max-width:620px){.grid-3,.grid-2,.news-list,.reviews,.scene-grid,.download-grid,.trust-grid,.sitemap-grid,.foot-grid{grid-template-columns:1fr}.hero h1{font-size:32px}.section-title{font-size:27px}.hero-stats{flex-wrap:wrap;gap:20px}}