:root{--brand:#f5b301;--brand-d:#d99a00;--accent:#06b6d4;--accent-d:#0891b2;--ink:#0b1220;--ink-2:#1e293b;--body:#475569;--muted:#64748b;--bg:#f7f9fc;--card:#ffffff;--line:#e6ebf2;--ok:#10b981;--warn:#f59e0b;--err:#ef4444;--radius:16px;--shadow:0 10px 30px rgba(15,23,42,.08);--shadow-lg:0 24px 60px rgba(15,23,42,.14);--font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--body);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);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:10px;font-weight:800;font-size:22px;color:var(--ink)}
.brand img{width:34px;height:34px;border-radius:8px}
.brand b{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{color:var(--ink-2);font-weight:600;font-size:15px;position:relative;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--accent-d)}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;font-size:13px;font-weight:700}
.lang-switch a{padding:7px 14px;background:#fff;color:var(--muted)}
.lang-switch a.on{background:var(--ink);color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:12px;padding:13px 26px;font-size:15px;cursor:pointer;transition:.2s;border:1px solid transparent}
.btn-brand{background:linear-gradient(135deg,var(--brand),#ffcf3f);color:#2a1c00;box-shadow:0 8px 22px rgba(245,179,1,.35)}
.btn-brand:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(245,179,1,.45)}
.btn-accent{background:linear-gradient(135deg,var(--accent),#22d3ee);color:#033b46;box-shadow:0 8px 22px rgba(6,182,212,.3)}
.btn-accent:hover{transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-d)}
.btn-lg{padding:16px 34px;font-size:17px}
.hero{background:radial-gradient(1200px 600px at 80% -10%,rgba(6,182,212,.16),transparent),radial-gradient(900px 500px at 0% 0%,rgba(245,179,1,.14),transparent),linear-gradient(180deg,#0b1220 0%,#101c33 100%);color:#e2e8f0;padding:64px 0 80px;position:relative;overflow:hidden}
.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:rgba(6,182,212,.14);border:1px solid rgba(6,182,212,.35);color:#67e8f9;padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:44px;line-height:1.15;color:#fff;font-weight:800;margin-bottom:20px}
.hero h1 span{background:linear-gradient(90deg,#fde047,#f5b301);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:18px;color:#b6c2d6;max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:flex;gap:32px;flex-wrap:wrap}
.hero-stats .st b{display:block;font-size:26px;color:#fff;font-weight:800}
.hero-stats .st span{font-size:13px;color:#94a3b8}
.sim-wrap{position:relative}
.sim{background:#0f172a;border:1px solid rgba(255,255,255,.1);border-radius:18px;box-shadow:0 30px 80px rgba(0,0,0,.5);overflow:hidden;font-size:14px}
.sim-bar{display:flex;align-items:center;gap:6px;padding:12px 16px;background:#1e293b;border-bottom:1px solid rgba(255,255,255,.08)}
.sim-bar i{width:10px;height:10px;border-radius:50%;display:inline-block}
.sim-bar .r{background:#ef4444}.sim-bar .y{background:#f5b301}.sim-bar .g{background:#10b981}
.sim-bar .ttl{color:#94a3b8;font-size:12px;margin-left:8px}
.sim-body{padding:18px}
.sim-status{display:flex;align-items:center;justify-content:space-between;background:rgba(6,182,212,.1);border:1px solid rgba(6,182,212,.3);border-radius:12px;padding:14px 16px;margin-bottom:16px}
.sim-status .lbl{display:flex;align-items:center;gap:10px;color:#e2e8f0;font-weight:700}
.sim-status .dot{width:11px;height:11px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(16,185,129,.2);animation:pulse 2s infinite}
.sim-status .spd{color:#67e8f9;font-weight:800;font-size:18px}
.sim-btn{width:100%;padding:13px;border-radius:12px;font-weight:800;font-size:15px;text-align:center;display:block}
.sim-btn.on{background:linear-gradient(135deg,var(--brand),#ffcf3f);color:#2a1c00}
.sim-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.sim-node{display:flex;align-items:center;justify-content:space-between;background:#1e293b;border-radius:10px;padding:10px 14px;color:#cbd5e1}
.sim-node .n{display:flex;align-items:center;gap:10px}
.sim-node .flag{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,#f5b301,#06b6d4);display:flex;align-items:center;justify-content:center;font-size:11px;color:#fff;font-weight:700}
.sim-node .ping{color:#10b981;font-weight:700;font-size:12px}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(16,185,129,.2)}50%{box-shadow:0 0 0 8px rgba(16,185,129,.05)}}
.section{padding:72px 0}
.section.alt{background:#fff}
.sec-head{max-width:680px;margin:0 auto 46px;text-align:center}
.sec-head .kicker{display:inline-block;color:var(--accent-d);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:2px;margin-bottom:10px}
.sec-head h2{font-size:34px;color:var(--ink);font-weight:800;line-height:1.25;margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:17px}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s;position:relative}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .ico{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,rgba(6,182,212,.12),rgba(245,179,1,.12))}
.card h3{font-size:19px;color:var(--ink);font-weight:700;margin-bottom:10px}
.card p{font-size:15px;color:var(--muted)}
.sell{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sell .card{text-align:center;border-top:4px solid var(--brand)}
.sell .num{font-size:44px;font-weight:800;color:var(--brand);opacity:.2;line-height:1;margin-bottom:10px}
.announce{background:#fff;border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:12px;padding:22px 26px;display:flex;gap:18px;align-items:flex-start;box-shadow:var(--shadow)}
.announce .tag{background:var(--brand);color:#2a1c00;font-weight:800;font-size:12px;padding:4px 10px;border-radius:6px;white-space:nowrap}
.announce h4{color:var(--ink);font-size:17px;margin-bottom:4px}
.announce p{font-size:15px;color:var(--muted)}
.trust{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.trust .t{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 20px;font-weight:700;color:var(--ink-2);font-size:14px}
.trust .t .ck{color:var(--ok);font-size:18px}
.scenario .card::after{content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;border-radius:50%;background:radial-gradient(circle,rgba(245,179,1,.2),transparent)}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
table.compare{width:100%;border-collapse:collapse;min-width:640px}
.compare th,.compare td{padding:16px 20px;text-align:center;border-bottom:1px solid var(--line);font-size:14px}
.compare thead th{background:var(--ink);color:#fff;font-weight:700}
.compare thead th.hl{background:linear-gradient(135deg,var(--brand),#ffcf3f);color:#2a1c00}
.compare td:first-child,.compare th:first-child{text-align:left;font-weight:600;color:var(--ink-2)}
.compare .yes{color:var(--ok);font-weight:700}
.compare .no{color:var(--err)}
.tabs{display:flex;gap:10px;justify-content:center;margin-bottom:32px;flex-wrap:wrap}
.tabs a{padding:10px 22px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;color:var(--muted);font-size:14px}
.tabs a.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.news-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.news-card .thumb{height:170px;background:linear-gradient(135deg,#0b1220,#1e3a5f);position:relative;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.25);font-size:40px;font-weight:800}
.news-card .body{padding:20px}
.news-card .meta{display:flex;gap:14px;color:var(--muted);font-size:12px;margin-bottom:10px}
.news-card h3{font-size:17px;color:var(--ink);line-height:1.4;margin-bottom:10px;font-weight:700}
.news-card p{font-size:14px;color:var(--muted)}
.testi .card{border-top:4px solid var(--accent)}
.testi .stars{color:var(--brand);font-size:16px;letter-spacing:2px;margin-bottom:12px}
.testi p.q{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.testi .who{display:flex;align-items:center;gap:12px}
.testi .avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--brand));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.testi .who b{color:var(--ink);font-size:14px}
.testi .who span{color:var(--muted);font-size:12px}
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px;text-align:center;transition:.25s;display:flex;flex-direction:column;gap:12px;align-items:center}
.dl-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--accent)}
.dl-card .plat{font-size:38px;line-height:1}
.dl-card b{color:var(--ink);font-size:17px}
.dl-card .ver{color:var(--muted);font-size:12px}
.dl-card .btn{padding:10px 18px;font-size:14px}
.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-item summary{list-style:none;cursor:pointer;padding:20px 24px;font-weight:700;color:var(--ink);font-size:16px;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--brand);font-weight:400;transition:.2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .a{padding:0 24px 22px;color:var(--body);font-size:15px}
.faq-item .a ol,.faq-item .a ul{padding-left:22px;margin:10px 0}
.faq-item .a li{margin-bottom:6px}
.cta{background:linear-gradient(135deg,#0b1220,#123a5f);border-radius:24px;padding:56px;text-align:center;color:#e2e8f0;position:relative;overflow:hidden}
.cta h2{color:#fff;font-size:32px;font-weight:800;margin-bottom:14px}
.cta p{color:#b6c2d6;margin-bottom:28px;font-size:16px}
.site-footer{background:var(--ink);color:#94a3b8;padding:56px 0 0;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-grid a{display:block;color:#94a3b8;font-size:14px;margin-bottom:10px;transition:color .2s}
.footer-grid a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer-bottom a{color:var(--brand)}
.breadcrumb{background:#fff;border-bottom:1px solid var(--line);padding:14px 0;font-size:14px;color:var(--muted)}
.breadcrumb a{color:var(--accent-d)}
.breadcrumb span{margin:0 8px;color:#cbd5e1}
.page-hero{background:radial-gradient(900px 400px at 50% -10%,rgba(6,182,212,.15),transparent),linear-gradient(180deg,#0b1220,#101c33);color:#fff;padding:56px 0;text-align:center}
.page-hero h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-hero p{color:#b6c2d6;max-width:640px;margin:0 auto}
.article{display:grid;grid-template-columns:1fr 300px;gap:40px;padding:48px 0;align-items:start}
.article-main{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px}
.article-main h1{font-size:30px;color:var(--ink);font-weight:800;line-height:1.3;margin-bottom:18px}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;color:var(--muted);font-size:13px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:24px}
.article-main h2{font-size:22px;color:var(--ink);font-weight:700;margin:32px 0 14px;padding-left:14px;border-left:4px solid var(--brand)}
.article-main img{width:100%;border-radius:12px;margin:16px 0}
.article-main h3{font-size:18px;color:var(--ink);margin:24px 0 10px}
.article-main p{margin-bottom:16px;font-size:16px;color:var(--body);line-height:1.9}
.article-main ul,.article-main ol{padding-left:24px;margin:14px 0;color:var(--body)}
.article-main li{margin-bottom:8px}
.article-main table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-main table th,.article-main table td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-main table th{background:#f1f5f9;color:var(--ink)}
.article-main .img-cap{color:var(--muted);font-size:13px;text-align:center;margin:-10px 0 20px}
.article-main blockquote{border-left:4px solid var(--accent);background:#f0f9ff;padding:16px 20px;margin:20px 0;border-radius:0 12px 12px 0;color:var(--ink-2)}
.sidebar{position:sticky;top:90px;display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.side-card h3{font-size:16px;color:var(--ink);margin-bottom:14px;font-weight:700;padding-bottom:10px;border-bottom:2px solid var(--brand)}
.side-card a{display:block;color:var(--body);font-size:14px;padding:8px 0;border-bottom:1px dashed var(--line);transition:color .2s}
.side-card a:hover{color:var(--accent-d)}
.side-card .cat-tag{display:inline-block;background:#f1f5f9;color:var(--muted);border-radius:6px;padding:4px 10px;font-size:12px;margin:0 6px 8px 0}
.pager{display:flex;justify-content:space-between;gap:16px;margin-top:30px}
.pager a{flex:1;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:14px;color:var(--body);transition:.2s}
.pager a:hover{border-color:var(--accent);color:var(--accent-d)}
.pager a small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.e404{min-height:70vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 20px}
.e404 .code{font-size:120px;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.e404 h1{font-size:28px;color:var(--ink);margin:16px 0 10px}
.e404 p{color:var(--muted);margin-bottom:30px}
.sitemap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px}
.sitemap h2{font-size:22px;color:var(--ink);margin:26px 0 14px;padding-bottom:10px;border-bottom:2px solid var(--brand)}
.sitemap ul li{margin-bottom:8px}
.sitemap ul li a{color:var(--accent-d);font-size:15px}
.sitemap ul li a:hover{text-decoration:underline}
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:960px){.hero-grid,.article,.footer-grid{grid-template-columns:1fr}.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}.dl-grid{grid-template-columns:repeat(2,1fr)}.sell{grid-template-columns:1fr}.related{grid-template-columns:1fr}.nav-links{display:none}.news-list{grid-template-columns:1fr}}
@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}.hero h1{font-size:32px}.section{padding:50px 0}.cta{padding:36px 22px}}