:root{--c-main:#0e9f6e;--c-main-d:#057a55;--c-deep:#064e3b;--c-accent:#f59e0b;--c-bg:#f6faf8;--c-card:#ffffff;--c-txt:#1f2937;--c-mut:#6b7280;--c-line:#e5e7eb;--radius:14px;--shadow:0 6px 24px rgba(6,78,59,.08)}
*{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;color:var(--c-txt);background:var(--c-bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line)}
.nav{display:flex;align-items:center;height:68px;gap:26px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--c-deep)}
.brand img{width:34px;height:34px;border-radius:8px}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:15px;font-weight:500}
.nav-links a{color:#374151;transition:color .2s}
.nav-links a:hover{color:var(--c-main)}
.lang-switch{display:flex;align-items:center;gap:6px;border:1px solid var(--c-line);border-radius:999px;padding:4px 6px}
.lang-switch a{padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;color:#6b7280}
.lang-switch a.active{background:var(--c-main);color:#fff}
.nav-cta{background:var(--c-main);color:#fff;padding:8px 20px;border-radius:999px;font-weight:600;font-size:14px;transition:background .2s}
.nav-cta:hover{background:var(--c-main-d)}

/* 按钮 */
.btn{display:inline-block;background:var(--c-main);color:#fff;padding:12px 28px;border-radius:999px;font-weight:600;font-size:15px;transition:background .2s,transform .15s}
.btn:hover{background:var(--c-main-d);transform:translateY(-1px)}
.btn-lg{padding:16px 38px;font-size:17px}
.btn-ghost{background:transparent;border:1.5px solid var(--c-main);color:var(--c-main)}
.btn-ghost:hover{background:var(--c-main);color:#fff}
.btn-amber{background:var(--c-accent)}
.btn-amber:hover{background:#d97706}

/* Hero */
.hero{padding:64px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#e7f7ef;color:var(--c-main-d);padding:6px 16px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:18px}
.hero h1{font-size:44px;line-height:1.25;font-weight:800;color:var(--c-deep);margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--c-main)}
.hero p.lead{font-size:18px;color:var(--c-mut);margin-bottom:28px;max-width:520px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:26px;margin-top:28px;color:var(--c-mut);font-size:14px}
.hero-meta b{color:var(--c-deep);font-size:20px;display:block}

/* 客户端模拟器 */
.simulator{background:linear-gradient(160deg,#0b3d2e,#0e9f6e);border-radius:20px;padding:20px;box-shadow:0 20px 50px rgba(6,78,59,.35);position:relative}
.sim-window{background:#fff;border-radius:14px;overflow:hidden}
.sim-titlebar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#f3f4f6;border-bottom:1px solid var(--c-line)}
.sim-dot{width:12px;height:12px;border-radius:50%}
.sim-dot.r{background:#f87171}.sim-dot.y{background:#fbbf24}.sim-dot.g{background:#34d399}
.sim-title{margin-left:6px;font-size:13px;color:#6b7280;font-weight:600}
.sim-body{padding:22px}
.sim-conn{display:flex;align-items:center;gap:16px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:12px;padding:16px;margin-bottom:16px}
.sim-conn .status-dot{width:12px;height:12px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.2)}
.sim-conn .conn-txt{font-size:15px;font-weight:700;color:var(--c-deep)}
.sim-conn .conn-sub{font-size:12px;color:var(--c-mut)}
.sim-btn-big{background:var(--c-main);color:#fff;text-align:center;padding:14px;border-radius:12px;font-weight:700;font-size:16px;margin-bottom:18px;transition:background .2s}
.sim-btn-big:hover{background:var(--c-main-d)}
.sim-node{display:flex;justify-content:space-between;align-items:center;padding:10px 4px;border-bottom:1px solid #f3f4f6;font-size:14px}
.sim-node .flag{font-size:18px;margin-right:8px}
.sim-node .ping{color:#059669;font-weight:700;font-size:13px}
.sim-node .tag{font-size:11px;background:#eef2ff;color:#4f46e5;padding:2px 8px;border-radius:6px}
.sim-foot{display:flex;justify-content:space-between;padding:14px 4px 0;font-size:12px;color:var(--c-mut)}

/* 区块通用 */
.section{padding:64px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head .kicker{color:var(--c-main);font-weight:700;font-size:14px;letter-spacing:1px;text-transform:uppercase;margin-bottom:10px}
.section-head h2{font-size:34px;font-weight:800;color:var(--c-deep);margin-bottom:14px}
.section-head p{color:var(--c-mut);font-size:16px}

/* 核心功能 */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:28px;transition:transform .2s,box-shadow .2s}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature .icon{width:52px;height:52px;border-radius:12px;background:#e7f7ef;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.feature h3{font-size:19px;font-weight:700;margin-bottom:10px;color:var(--c-deep)}
.feature p{color:var(--c-mut);font-size:14.5px}

/* 公告 */
.notice{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:28px 32px}
.notice-item{display:flex;align-items:center;gap:16px;padding:12px 0;border-bottom:1px solid #f3f4f6}
.notice-item:last-child{border-bottom:none}
.notice-tag{background:#fef3c7;color:#b45309;padding:4px 12px;border-radius:6px;font-size:12px;font-weight:700;white-space:nowrap}
.notice-date{color:var(--c-mut);font-size:13px;white-space:nowrap}
.notice-txt{font-size:15px;color:#374151}

/* 信任背书 */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:26px;text-align:center}
.trust-card .num{font-size:32px;font-weight:800;color:var(--c-main);margin-bottom:6px}
.trust-card .lbl{color:var(--c-mut);font-size:14px}

/* 应用场景 */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden}
.scene .scene-img{height:150px;background:linear-gradient(135deg,#0e9f6e,#34d399);display:flex;align-items:center;justify-content:center;font-size:46px}
.scene .scene-body{padding:22px}
.scene h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--c-deep)}
.scene p{color:var(--c-mut);font-size:14px}

/* 对比表 */
.compare{overflow-x:auto}
.compare table{width:100%;border-collapse:collapse;background:var(--c-card);border-radius:var(--radius);overflow:hidden;min-width:640px}
.compare th,.compare td{padding:16px 20px;text-align:center;border-bottom:1px solid #f3f4f6;font-size:14.5px}
.compare th{background:#064e3b;color:#fff;font-weight:600}
.compare th:first-child,.compare td:first-child{text-align:left;font-weight:600;color:var(--c-deep)}
.compare .yes{color:#059669;font-weight:700}
.compare .no{color:#9ca3af}
.compare tr.hl td{background:#f0fdf4}
.compare tr.hl td:first-child{color:var(--c-main-d)}

/* 新闻 Tab */
.tabs{display:flex;justify-content:center;gap:10px;margin-bottom:30px;flex-wrap:wrap}
.tab{display:inline-block;padding:9px 22px;border-radius:999px;background:#fff;border:1px solid var(--c-line);font-weight:600;font-size:14px;color:#6b7280}
.tab.active{background:var(--c-main);color:#fff;border-color:var(--c-main)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;transition:transform .2s,box-shadow .2s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.news-card .nc-img{height:150px;background-size:cover;background-position:center}
.news-card .nc-body{padding:20px}
.news-card .nc-cat{font-size:12px;color:var(--c-main);font-weight:700;margin-bottom:8px}
.news-card h3{font-size:16px;font-weight:700;margin-bottom:8px;line-height:1.45}
.news-card h3 a:hover{color:var(--c-main)}
.news-card .nc-date{font-size:12px;color:var(--c-mut)}

/* 评论 */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px}
.review .stars{color:#f59e0b;font-size:16px;margin-bottom:10px}
.review .rv-txt{font-size:14.5px;color:#374151;margin-bottom:16px}
.review .rv-user{display:flex;align-items:center;gap:12px}
.review .avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#0e9f6e,#34d399);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.review .rv-name{font-weight:600;font-size:14px}
.review .rv-meta{font-size:12px;color:var(--c-mut)}

/* 下载区 */
.downloads{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:24px 16px;text-align:center;transition:transform .2s,box-shadow .2s}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.dl-card .os{font-size:40px;margin-bottom:12px}
.dl-card h3{font-size:15px;font-weight:700;margin-bottom:6px}
.dl-card p{font-size:12px;color:var(--c-mut);margin-bottom:16px}
.dl-card .btn{width:100%;padding:10px 0;font-size:14px}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-cat{margin-bottom:36px}
.faq-cat h3{font-size:21px;font-weight:800;color:var(--c-deep);margin-bottom:16px;padding-left:14px;border-left:4px solid var(--c-main)}
.faq-item{background:var(--c-card);border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq-q{padding:16px 20px;font-weight:600;font-size:15.5px;color:var(--c-deep);cursor:default}
.faq-steps{padding:0 20px 18px}
.faq-steps ol{padding-left:0;list-style:none;counter-reset:step}
.faq-steps ol li{counter-increment:step;padding:10px 0 10px 40px;position:relative;color:#4b5563;font-size:14.5px;border-bottom:1px dashed #f3f4f6}
.faq-steps ol li:last-child{border-bottom:none}
.faq-steps ol li::before{content:counter(step);position:absolute;left:0;top:10px;width:26px;height:26px;background:#e7f7ef;color:var(--c-main-d);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px}

/* CTA */
.cta{background:linear-gradient(135deg,#064e3b,#0e9f6e);border-radius:24px;padding:56px 40px;text-align:center;color:#fff}
.cta h2{font-size:32px;font-weight:800;margin-bottom:14px}
.cta p{font-size:16px;opacity:.9;margin-bottom:28px}
.cta .btn{background:#fff;color:var(--c-deep)}
.cta .btn:hover{background:#f3f4f6}

/* 页脚 */
.footer{background:#053f30;color:#d1fae5;padding:56px 0 0;margin-top:64px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer a{display:block;color:#a7f3d0;font-size:14px;margin-bottom:10px}
.footer a:hover{color:#fff}
.footer .f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer .f-brand img{width:30px;height:30px;border-radius:7px}
.footer .f-brand span{font-weight:700;font-size:17px;color:#fff}
.footer .f-desc{font-size:13.5px;line-height:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer-bottom a{color:#a7f3d0}

/* 面包屑 */
.breadcrumb{font-size:13.5px;color:var(--c-mut);padding:18px 0 6px}
.breadcrumb a{color:var(--c-main);}
.breadcrumb a:hover{text-decoration:underline}

/* 新闻详情 */
.article-layout{display:grid;grid-template-columns:1fr 300px;gap:40px;padding:30px 0 60px}
.article-main{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:40px}
.article-main h1{font-size:30px;font-weight:800;color:var(--c-deep);line-height:1.35;margin-bottom:16px}
.article-meta{display:flex;gap:18px;color:var(--c-mut);font-size:13.5px;margin-bottom:24px;flex-wrap:wrap}
.article-meta .cat{color:var(--c-main);font-weight:700}
.article-cover{width:100%;height:280px;object-fit:cover;border-radius:12px;margin-bottom:28px}
.article-main .lead{font-size:17px;color:#374151;background:#f0fdf4;border-left:4px solid var(--c-main);padding:16px 20px;border-radius:0 10px 10px 0;margin-bottom:28px}
.article-main h2{font-size:22px;font-weight:800;color:var(--c-deep);margin:32px 0 14px}
.article-main p{color:#4b5563;font-size:15.5px;margin-bottom:16px}
.article-main img.inline{width:100%;border-radius:10px;margin:20px 0}
.article-main .img-cap{font-size:12.5px;color:var(--c-mut);text-align:center;margin:-12px 0 20px}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:20px;border-top:1px solid var(--c-line)}
.article-nav a{font-size:14px;font-weight:600;color:var(--c-main-d)}
.article-nav a:hover{text-decoration:underline}
.article-nav .back{color:var(--c-mut)}

.sidebar{position:sticky;top:88px;align-self:start}
.side-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);padding:22px;margin-bottom:22px}
.side-card h3{font-size:16px;font-weight:800;color:var(--c-deep);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--c-main)}
.side-card ul{list-style:none}
.side-card ul li{margin-bottom:12px}
.side-card ul li a{font-size:14px;color:#4b5563;line-height:1.5}
.side-card ul li a:hover{color:var(--c-main)}
.side-card .hot-num{display:inline-block;width:22px;height:22px;background:#e7f7ef;color:var(--c-main-d);border-radius:6px;text-align:center;font-size:12px;font-weight:700;margin-right:8px;line-height:22px}
.side-card .cat-link{display:inline-block;background:#f3f4f6;padding:6px 14px;border-radius:999px;font-size:13px;margin:0 8px 8px 0;color:#4b5563}
.side-card .cat-link:hover{background:var(--c-main);color:#fff}

/* 相关阅读 */
.related{margin-top:40px}
.related h3{font-size:20px;font-weight:800;color:var(--c-deep);margin-bottom:20px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

/* 评论列表 */
.cm-list{margin-top:40px}
.cm-list h3{font-size:20px;font-weight:800;color:var(--c-deep);margin-bottom:20px}
.cm-item{background:var(--c-card);border:1px solid var(--c-line);border-radius:12px;padding:18px;margin-bottom:14px}
.cm-item .cm-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.cm-item .cm-name{font-weight:600;font-size:14px}
.cm-item .cm-time{font-size:12px;color:var(--c-mut)}
.cm-item .cm-body{font-size:14.5px;color:#4b5563}

/* 分页/列表 */
.news-list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:10px 0 50px}
.pager{display:flex;justify-content:center;gap:8px;padding:20px 0 50px}
.pager a{display:inline-block;padding:8px 16px;border:1px solid var(--c-line);border-radius:8px;font-size:14px;color:#4b5563}
.pager a.active{background:var(--c-main);color:#fff;border-color:var(--c-main)}

/* 下载页 */
.dl-hero{text-align:center;padding:50px 0 20px}
.dl-hero h1{font-size:38px;font-weight:800;color:var(--c-deep);margin-bottom:14px}
.dl-hero p{font-size:17px;color:var(--c-mut);max-width:640px;margin:0 auto}
.dl-note{background:#fef3c7;border:1px solid #fcd34d;color:#92400e;border-radius:12px;padding:14px 20px;margin:30px 0;font-size:14px;text-align:center}

/* 语言选择页 */
.lang-hero{text-align:center;padding:80px 0;min-height:60vh;display:flex;flex-direction:column;justify-content:center;align-items:center}
.lang-hero .logo{width:80px;height:80px;border-radius:20px;margin-bottom:24px}
.lang-hero h1{font-size:34px;font-weight:800;color:var(--c-deep);margin-bottom:12px}
.lang-hero p{color:var(--c-mut);margin-bottom:32px}
.lang-cards{display:flex;gap:20px}
.lang-card{background:#fff;border:1.5px solid var(--c-line);border-radius:16px;padding:30px 44px;text-align:center;font-weight:700;font-size:18px;transition:all .2s}
.lang-card:hover{border-color:var(--c-main);color:var(--c-main);transform:translateY(-3px)}
.lang-card small{display:block;font-weight:400;color:var(--c-mut);font-size:13px;margin-top:6px}

@media(max-width:960px){
  .hero-grid,.features,.scenes,.news-grid,.reviews,.trust,.article-layout,.footer-grid{grid-template-columns:1fr}
  .downloads{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .nav-links{display:none}
  .section{padding:44px 0}
}