:root{--yellow:#ffb300;--yellow-deep:#ff9d00;--orange:#ff7a00;--teal:#00c2a8;--navy:#0e1a2b;--navy-2:#13263d;--ink:#1a2433;--gray:#5a6b7f;--line:#e6ecf3;--bg:#f6f9fc;--white:#fff;--radius:16px;--shadow:0 10px 34px rgba(14,26,43,.08)}
*{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",sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head .tag{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--yellow-deep);background:#fff4d9;border:1px solid #ffe3a6;padding:5px 14px;border-radius:30px;margin-bottom:14px}
.section-head h2{font-size:34px;line-height:1.25;color:var(--navy);margin-bottom:12px}
.section-head p{font-size:16px;color:var(--gray)}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;border-radius:30px;padding:13px 28px;font-size:15px;transition:.2s}
.btn-primary{background:linear-gradient(135deg,var(--yellow),var(--yellow-deep));color:#3a2a00;box-shadow:0 8px 20px rgba(255,157,0,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,157,0,.45)}
.btn-ghost{border:2px solid var(--navy);color:var(--navy);background:transparent}
.btn-ghost:hover{background:var(--navy);color:#fff}
.btn-white{background:#fff;color:var(--navy);box-shadow:0 8px 20px rgba(0,0,0,.15)}
.btn-white:hover{transform:translateY(-2px)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:100;background:rgba(14,26,43,.96);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:36px;height:36px;border-radius:9px}
.brand .name{color:#fff;font-size:19px;font-weight:800;letter-spacing:.02em}
.brand .name span{color:var(--yellow)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{color:#c9d4e0;font-size:14.5px;font-weight:600;transition:.2s;position:relative}
.nav-links a:hover{color:var(--yellow)}
.nav-links a.active{color:var(--yellow)}
.header-cta{display:flex;align-items:center;gap:12px}
.header-cta .btn{padding:9px 20px;font-size:14px}

/* Hero */
.hero{position:relative;background:radial-gradient(1200px 600px at 80% -10%,#1c3a5e 0%,transparent 60%),linear-gradient(180deg,#0e1a2b,#13263d);color:#fff;overflow:hidden}
.hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:74px 20px 84px}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:#ffd76a;background:rgba(255,179,0,.12);border:1px solid rgba(255,179,0,.35);padding:6px 15px;border-radius:30px;margin-bottom:20px}
.hero h1{font-size:44px;line-height:1.22;font-weight:800;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--yellow)}
.hero .sub{font-size:17px;color:#b9c7d6;max-width:520px;margin-bottom:26px}
.hero .stats{display:flex;gap:34px;margin-bottom:28px}
.hero .stats b{display:block;font-size:26px;color:#fff}
.hero .stats span{font-size:13px;color:#8fa1b5}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}

/* 客户端模拟器 */
.app-frame{position:relative;background:#0b1624;border:1px solid #24344a;border-radius:18px;box-shadow:0 30px 70px rgba(0,0,0,.45);overflow:hidden}
.app-frame .topbar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#101e31;border-bottom:1px solid #1c2c42}
.app-frame .dot{width:11px;height:11px;border-radius:50%}
.app-frame .dot.r{background:#ff5f57}.app-frame .dot.y{background:#febc2e}.app-frame .dot.g{background:#28c840}
.app-frame .urlbar{flex:1;margin-left:8px;background:#0b1624;border:1px solid #223350;border-radius:7px;padding:5px 12px;font-size:12px;color:#5f7390}
.app-body{padding:18px}
.app-panel{background:#13243a;border:1px solid #223350;border-radius:12px;padding:16px}
.app-panel .row{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.app-panel .row .lbl{font-size:12.5px;color:#8fa1b5}
.app-panel .row .val{font-size:13px;font-weight:700;color:#fff}
.power-btn{display:flex;align-items:center;justify-content:center;width:86px;height:86px;margin:8px auto 14px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#35e0a0,#0aa06b);box-shadow:0 0 0 9px rgba(53,224,160,.12),0 0 34px rgba(53,224,160,.5);position:relative}
.power-btn::after{content:"已连接";position:absolute;bottom:-26px;font-size:12px;color:#35e0a0;white-space:nowrap}
.power-btn .bolt{font-size:30px}
.node-list{display:flex;flex-direction:column;gap:8px}
.node{display:flex;align-items:center;gap:9px;background:#0f2034;border:1px solid #223350;border-radius:8px;padding:9px 12px;font-size:12.5px}
.node .flag{width:20px;height:14px;border-radius:3px;flex:none}
.node .nm{color:#e6eef7;font-weight:600}
.node .ms{color:#35e0a0;margin-left:auto;font-weight:700}
.node .sel{border:1px solid var(--yellow);color:var(--yellow);font-size:10px;padding:1px 6px;border-radius:4px}
.node.sel{background:rgba(255,179,0,.07)}
.app-panel .meter{height:8px;background:#0f2034;border-radius:6px;overflow:hidden;margin:6px 0}
.app-panel .meter i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--yellow));width:72%;border-radius:6px}
.float-chip{position:absolute;background:#fff;color:var(--navy);border-radius:10px;padding:8px 13px;font-size:12px;font-weight:700;box-shadow:0 12px 26px rgba(0,0,0,.3)}
.float-chip .small{display:block;font-size:10.5px;color:var(--gray);font-weight:500}
.chip-ping{top:20px;right:-18px}.chip-speed{top:120px;left:-24px}

/* 公告 */
.announce{background:var(--white);border-bottom:1px solid var(--line)}
.announce .container{display:flex;align-items:center;gap:14px;padding:16px 20px}
.announce .badge{background:var(--yellow);color:#3a2a00;font-size:12px;font-weight:800;padding:4px 12px;border-radius:20px;flex:none}
.announce .ticker{overflow:hidden;flex:1}
.announce .ticker p{font-size:14px;color:var(--gray);white-space:nowrap}

/* 核心功能 */
.features{background:var(--white)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#ffd98a}
.feature-card .icon{width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:24px;background:linear-gradient(135deg,#fff4d9,#ffe3a6);margin-bottom:18px}
.feature-card h3{font-size:19px;color:var(--navy);margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--gray)}

/* 对比表 */
.compare{background:var(--bg)}
.compare-table{background:var(--white);border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;box-shadow:var(--shadow)}
.compare-table table{width:100%;border-collapse:collapse;font-size:14.5px}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
.compare-table thead th{background:var(--navy);color:#fff;font-size:14px}
.compare-table thead th.hot{background:linear-gradient(135deg,var(--yellow),var(--yellow-deep));color:#3a2a00}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .yes{color:#0aa06b;font-weight:700}
.compare-table .no{color:#c0392b}
.compare-table td:first-child{font-weight:600;color:var(--navy)}

/* 新闻Tabs */
.news{background:var(--white)}
.news-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:34px;flex-wrap:wrap}
.news-tabs a{padding:9px 22px;border-radius:30px;font-size:14px;font-weight:600;background:var(--bg);border:1px solid var(--line);color:var(--gray)}
.news-tabs a.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.news-card .thumb{height:170px;background:linear-gradient(135deg,var(--navy),#234);display:flex;align-items:center;justify-content:center;color:#fff;font-size:44px}
.news-card .thumb img{width:100%;height:100%;object-fit:cover}
.news-card .meta{padding:20px}
.news-card .cat{font-size:12px;color:var(--yellow-deep);font-weight:700}
.news-card h3{font-size:16.5px;color:var(--navy);margin:8px 0 8px;line-height:1.45}
.news-card .date{font-size:12.5px;color:var(--gray)}

/* 用户评论 */
.reviews{background:var(--bg)}
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.review-card .stars{color:var(--yellow);font-size:16px;letter-spacing:2px;margin-bottom:12px}
.review-card .text{font-size:14.5px;color:var(--ink);margin-bottom:18px}
.review-card .who{display:flex;align-items:center;gap:10px}
.review-card .who .ava{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--yellow),var(--orange));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px}
.review-card .who .n{font-weight:700;color:var(--navy);font-size:14px}
.review-card .who .t{font-size:12px;color:var(--gray)}

/* 下载区 */
.download-sec{background:linear-gradient(180deg,#0e1a2b,#13263d);color:#fff}
.download-sec .section-head h2{color:#fff}
.download-sec .section-head p{color:#b9c7d6}
.platform-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:10px}
.platform{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:24px 16px;text-align:center;transition:.25s}
.platform:hover{background:rgba(255,255,255,.1);transform:translateY(-5px);border-color:var(--yellow)}
.platform .os{font-size:36px;margin-bottom:12px}
.platform .n{font-size:15px;font-weight:700;margin-bottom:4px}
.platform .v{font-size:12px;color:#8fa1b5;margin-bottom:14px}
.platform .btn{font-size:13px;padding:9px 18px}

/* 信任背书 */
.trust{background:var(--white)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.trust-item{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px}
.trust-item .ic{font-size:32px;margin-bottom:12px}
.trust-item h4{font-size:16px;color:var(--navy);margin-bottom:6px}
.trust-item p{font-size:13px;color:var(--gray)}

/* 应用场景 */
.scenes{background:var(--bg)}
.scenes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.scene-card .ic{font-size:30px;margin-bottom:14px}
.scene-card h3{font-size:17px;color:var(--navy);margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--gray)}

/* FAQ */
.faq{background:var(--white)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-cat{margin-bottom:34px}
.faq-cat h3{font-size:20px;color:var(--navy);margin-bottom:14px;padding-left:14px;border-left:4px solid var(--yellow)}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;background:var(--bg)}
.faq-item details summary{cursor:pointer;padding:18px 22px;font-weight:700;color:var(--navy);font-size:15.5px;list-style:none;display:flex;align-items:center;justify-content:space-between}
.faq-item details summary::after{content:"+";font-size:22px;color:var(--yellow-deep)}
.faq-item details[open] summary::after{content:"−"}
.faq-item .faq-body{padding:0 22px 20px;color:var(--gray);font-size:14.5px}
.faq-item .faq-body ol{margin-left:20px;margin-top:8px}
.faq-item .faq-body li{margin-bottom:6px}

/* CTA */
.cta{background:linear-gradient(135deg,var(--yellow),var(--yellow-deep));color:#3a2a00;text-align:center;padding:66px 20px}
.cta h2{font-size:32px;margin-bottom:12px}
.cta p{font-size:16px;margin-bottom:24px;opacity:.85}
.cta .btn{background:#0e1a2b;color:#fff}

/* 页脚 */
.site-footer{background:#0b1624;color:#8fa1b5;padding:54px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-grid a{display:block;font-size:13.5px;color:#8fa1b5;margin-bottom:9px}
.footer-grid a:hover{color:var(--yellow)}
.footer-brand .name{color:#fff;font-size:18px;font-weight:800;margin-bottom:10px}
.footer-brand p{font-size:13.5px;margin-bottom:14px}
.footer-bottom{border-top:1px solid #1c2c42;padding-top:22px;text-align:center;font-size:12.5px;color:#5f7390}
.footer-bottom a{color:#8fa1b5;margin:0 8px}

/* 面包屑 */
.breadcrumb{font-size:13px;color:var(--gray);margin:18px 0;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--gray)}
.breadcrumb a:hover{color:var(--yellow-deep)}
.breadcrumb .sep{color:#c4cedb}
.breadcrumb .cur{color:var(--navy);font-weight:600}

/* 页面hero（子页） */
.page-hero{background:radial-gradient(900px 400px at 75% -10%,#1c3a5e 0%,transparent 60%),linear-gradient(180deg,#0e1a2b,#13263d);color:#fff;text-align:center;padding:56px 20px}
.page-hero h1{font-size:36px;font-weight:800;margin-bottom:12px}
.page-hero h1 em{font-style:normal;color:var(--yellow)}
.page-hero p{color:#b9c7d6;font-size:16px;max-width:640px;margin:0 auto}

/* 文章详情 */
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:40px;padding:40px 0 70px;align-items:start}
.article-main{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:40px}
.article-main .art-head h1{font-size:30px;line-height:1.4;color:var(--navy);margin-bottom:14px}
.article-main .art-meta{display:flex;gap:16px;font-size:13px;color:var(--gray);margin-bottom:10px}
.article-main .art-meta span{display:flex;align-items:center;gap:5px}
.article-main .art-cover{width:100%;height:320px;object-fit:cover;border-radius:12px;margin:20px 0;background:linear-gradient(135deg,var(--navy),#234)}
.article-main .art-content{font-size:16px;color:#33404f;line-height:1.95}
.article-main .art-content h2{font-size:22px;color:var(--navy);margin:30px 0 14px;padding-left:13px;border-left:4px solid var(--yellow)}
.article-main .art-content h3{font-size:17px;color:var(--navy);margin:22px 0 10px}
.article-main .art-content p{margin-bottom:16px}
.article-main .art-content figure{margin:22px 0;text-align:center}
.article-main .art-content figure img{width:100%;border-radius:12px;background:#eef3f8}
.article-main .art-content figcaption{font-size:12.5px;color:var(--gray);margin-top:8px}
.article-main .art-content blockquote{border-left:4px solid var(--yellow);background:#fff8e8;padding:16px 20px;border-radius:8px;margin:20px 0;color:#5a4a1a;font-size:15px}
.article-main .art-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-main .art-content table th,.article-main .art-content table td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-main .art-content table th{background:var(--navy);color:#fff}
.article-main .art-content ul{margin:0 0 16px 22px}
.article-main .art-content ul li{list-style:disc;margin-bottom:6px}
.art-comments{margin-top:36px}
.art-comments h3{font-size:18px;color:var(--navy);margin-bottom:16px}
.comment-item{border-top:1px solid var(--line);padding:16px 0}
.comment-item .c-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.comment-item .c-ava{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--yellow),var(--orange));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.comment-item .c-name{font-weight:700;font-size:14px;color:var(--navy)}
.comment-item .c-time{font-size:12px;color:var(--gray)}
.comment-item .c-text{font-size:14px;color:var(--ink)}
.art-pager{display:flex;justify-content:space-between;gap:14px;margin-top:28px}
.art-pager a{flex:1;border:1px solid var(--line);border-radius:10px;padding:14px 18px;font-size:14px;color:var(--navy);transition:.2s}
.art-pager a:hover{border-color:var(--yellow);background:#fff8e8}
.art-pager a span{display:block;font-size:12px;color:var(--gray)}

/* 侧边栏 */
.art-sidebar .side-box{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:22px}
.art-sidebar .side-box h4{font-size:15px;color:var(--navy);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--yellow)}
.art-sidebar .hot-list a{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:13.5px;color:var(--ink);line-height:1.5}
.art-sidebar .hot-list a:last-child{border-bottom:none}
.art-sidebar .hot-list a:hover{color:var(--yellow-deep)}
.art-sidebar .hot-list .rank{font-weight:800;color:var(--yellow-deep);font-size:15px;flex:none}
.art-sidebar .cat-list a{display:flex;justify-content:space-between;padding:8px 0;font-size:13.5px;color:var(--gray);border-bottom:1px dashed var(--line)}
.art-sidebar .cat-list a:hover{color:var(--yellow-deep)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:10px}
.related-card{background:var(--bg);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.related-card .r-thumb{height:110px;background:linear-gradient(135deg,var(--navy),#234);display:flex;align-items:center;justify-content:center;color:#fff;font-size:30px}
.related-card .r-meta{padding:14px}
.related-card .r-meta a{font-size:13.5px;color:var(--navy);font-weight:600;line-height:1.45}
.related-card .r-meta a:hover{color:var(--yellow-deep)}

/* 新闻列表页 */
.news-list{display:grid;grid-template-columns:1fr;gap:22px}
.news-list-item{display:flex;gap:24px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.25s}
.news-list-item:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.news-list-item .thumb{width:240px;height:160px;border-radius:10px;overflow:hidden;flex:none;background:linear-gradient(135deg,var(--navy),#234);display:flex;align-items:center;justify-content:center;color:#fff;font-size:40px}
.news-list-item .thumb img{width:100%;height:100%;object-fit:cover}
.news-list-item .info h3{font-size:19px;color:var(--navy);margin-bottom:8px;line-height:1.45}
.news-list-item .info h3 a:hover{color:var(--yellow-deep)}
.news-list-item .info p{font-size:14px;color:var(--gray);margin-bottom:12px}
.news-list-item .info .meta{font-size:12.5px;color:var(--gray);display:flex;gap:14px}

/* 下载页 */
.dl-hero{background:linear-gradient(180deg,#0e1a2b,#13263d);color:#fff}
.dl-hero .container{display:grid;grid-template-columns:1fr .9fr;gap:44px;align-items:center;padding:60px 20px}
.dl-hero h1{font-size:38px;font-weight:800;margin-bottom:14px}
.dl-hero h1 em{font-style:normal;color:var(--yellow)}
.dl-hero .sub{color:#b9c7d6;font-size:16px;margin-bottom:24px}
.dl-steps{background:var(--white);border-radius:var(--radius);padding:26px}
.dl-steps h3{font-size:18px;color:var(--navy);margin-bottom:16px}
.dl-steps ol{margin-left:20px}
.dl-steps li{font-size:14px;color:var(--gray);margin-bottom:10px}

/* 响应式 */
@media(max-width:992px){
.hero .container{grid-template-columns:1fr;gap:36px}
.dl-hero .container{grid-template-columns:1fr}
.article-layout{grid-template-columns:1fr}
.features-grid,.news-grid,.reviews-grid,.scenes-grid,.platform-grid{grid-template-columns:repeat(2,1fr)}
.trust-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.news-list-item{flex-direction:column}
.news-list-item .thumb{width:100%;height:180px}
}
@media(max-width:600px){
.section{padding:48px 0}
.hero h1{font-size:30px}
.section-head h2{font-size:26px}
.features-grid,.news-grid,.reviews-grid,.scenes-grid,.platform-grid,.trust-grid,.related-grid{grid-template-columns:1fr}
.nav-links{display:none}
}