:root{--bg:#0a1120;--bg2:#0f1a2e;--card:#131f36;--line:#1e2c48;--accent:#00d4b3;--accent2:#3b82f6;--text:#e8edf6;--muted:#93a0b8;--warn:#ffb020;--radius:14px;--shadow:0 10px 30px rgba(0,0,0,.35)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.sec{padding:72px 0}
.sec-alt{background:var(--bg2)}
.sec-title{font-size:32px;font-weight:800;text-align:center;margin-bottom:12px;letter-spacing:-.5px}
.sec-sub{text-align:center;color:var(--muted);max-width:680px;margin:0 auto 44px}
.grad{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:999px;font-weight:700;font-size:15px;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(90deg,var(--accent),#00b394);color:#04201a}
.btn-primary:hover{box-shadow:0 8px 24px rgba(0,212,179,.35);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{padding:16px 36px;font-size:17px}
.tag{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(0,212,179,.12);color:var(--accent)}
/* header */
.hdr{position:sticky;top:0;z-index:100;background:rgba(10,17,32,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.3px}
.logo img{width:34px;height:34px;border-radius:8px}
.nav{display:flex;gap:28px;align-items:center}
.nav a{color:var(--muted);font-size:15px;font-weight:500;transition:.2s}
.nav a:hover{color:var(--text)}
.nav a.active{color:var(--accent)}
/* hero */
.hero{position:relative;overflow:hidden;padding:80px 0 60px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 400px at 20% 0%,rgba(0,212,179,.14),transparent 60%),radial-gradient(700px 400px at 80% 20%,rgba(59,130,246,.12),transparent 60%);pointer-events:none}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative}
.hero h1{font-size:44px;font-weight:900;line-height:1.2;letter-spacing:-1px;margin:16px 0}
.hero .lead{color:var(--muted);font-size:18px;margin-bottom:28px;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.hero-stats{display:flex;gap:36px}
.hero-stats .n{font-size:28px;font-weight:800;color:var(--accent)}
.hero-stats .l{color:var(--muted);font-size:13px}
/* simulator */
.sim{background:linear-gradient(180deg,var(--card),#0e192e);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.sim-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.sim-bar span{width:11px;height:11px;border-radius:50%;background:#ff5f57}.sim-bar span:nth-child(2){background:#ffbd2e}.sim-bar span:nth-child(3){background:#28c840}
.sim-body{padding:22px}
.sim-status{display:flex;align-items:center;gap:14px;background:rgba(0,212,179,.08);border:1px solid rgba(0,212,179,.25);border-radius:12px;padding:14px 16px;margin-bottom:18px}
.sim-dot{width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(0,212,179,.2);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.sim-status b{display:block;font-size:15px}
.sim-status small{color:var(--muted)}
.sim-row{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;transition:.2s}
.sim-row:hover{border-color:var(--accent)}
.sim-row .flag{font-size:20px}
.sim-row .nm{font-weight:600;font-size:14px}
.sim-row .ms{color:var(--accent);font-size:13px;font-weight:600}
.sim-connect{display:flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(90deg,var(--accent),#00b394);color:#04201a;font-weight:800;font-size:16px;border-radius:12px;padding:15px;margin-top:14px}
/* notice */
.notice{background:linear-gradient(90deg,rgba(255,176,32,.1),rgba(255,176,32,.04));border:1px solid rgba(255,176,32,.3);border-radius:12px;padding:16px 20px;display:flex;align-items:center;gap:12px;margin-bottom:40px}
.notice .ic{font-size:20px}
.notice b{color:var(--warn)}
/* features grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{border-color:var(--accent);transform:translateY(-4px)}
.card .ic{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:26px;background:rgba(0,212,179,.12);margin-bottom:18px}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
/* compare table */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{padding:15px 16px;text-align:center;border-bottom:1px solid var(--line)}
.tbl th{color:var(--muted);font-weight:600;font-size:13px}
.tbl td:first-child{text-align:left;font-weight:600}
.tbl .yes{color:var(--accent);font-weight:700}
.tbl .no{color:#7a869c}
.tbl .hl{background:rgba(0,212,179,.06)}
.tbl thead th.self{color:var(--accent);font-weight:800}
/* tabs */
.tabs{display:flex;gap:10px;justify-content:center;margin-bottom:36px;flex-wrap:wrap}
.tab{padding:10px 22px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-weight:600;cursor:pointer;transition:.2s}
.tab:hover,.tab.on{border-color:var(--accent);color:var(--accent);background:rgba(0,212,179,.08)}
.news-card{display:flex;gap:18px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px;transition:.2s}
.news-card:hover{border-color:var(--accent)}
.news-card .thumb{width:140px;height:88px;border-radius:10px;overflow:hidden;flex-shrink:0;background:var(--bg2);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:30px}
.news-card h4{font-size:16px;margin-bottom:6px}
.news-card .meta{color:var(--muted);font-size:13px}
.news-card p{color:var(--muted);font-size:14px;margin-top:4px}
/* reviews */
.rev{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.rev .stars{color:#ffbd2e;margin-bottom:12px;font-size:16px}
.rev p{color:var(--text);font-size:15px;margin-bottom:14px}
.rev .who{display:flex;align-items:center;gap:12px}
.rev .ava{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-weight:800;color:#04201a}
.rev .who b{display:block;font-size:14px}
.rev .who small{color:var(--muted)}
/* download platforms */
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.dl-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 16px;text-align:center;transition:.25s}
.dl-item:hover{border-color:var(--accent);transform:translateY(-4px)}
.dl-item .ic{font-size:40px;margin-bottom:14px}
.dl-item b{display:block;margin-bottom:6px}
.dl-item small{color:var(--muted);display:block;margin-bottom:16px}
/* trust */
.trust{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
.trust .t{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 24px}
.trust .t .ic{font-size:26px}
.trust .t b{display:block;font-size:15px}
.trust .t small{color:var(--muted)}
/* scenarios */
.sc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.sc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.sc .ic{font-size:30px;margin-bottom:12px}
.sc h4{font-size:16px;margin-bottom:8px}
.sc p{color:var(--muted);font-size:14px}
/* faq */
.faq{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden;background:var(--card)}
.faq-q{padding:18px 22px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q:hover{color:var(--accent)}
.faq-a{padding:0 22px 20px;color:var(--muted);font-size:15px;display:none}
.faq-a.open{display:block}
.faq-a ol{padding-left:20px;margin-top:8px}
.faq-a ol li{margin-bottom:8px;list-style:decimal}
.faq-a b{color:var(--text)}
/* cta */
.cta{background:linear-gradient(120deg,#0e2a26,#0a1f33);border:1px solid rgba(0,212,179,.3);border-radius:20px;padding:56px;text-align:center}
.cta h2{font-size:34px;font-weight:900;margin-bottom:14px}
.cta p{color:var(--muted);margin-bottom:28px}
/* footer */
.ftr{border-top:1px solid var(--line);padding:56px 0 28px;background:var(--bg2)}
.ftr-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.ftr h5{font-size:15px;margin-bottom:16px;color:var(--text)}
.ftr a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;transition:.2s}
.ftr a:hover{color:var(--accent)}
.ftr .desc{color:var(--muted);font-size:14px;max-width:300px;margin-top:12px}
.ftr-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:13px}
/* article */
.art{max-width:820px;margin:0 auto}
.art-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:32px}
.art-head h1{font-size:34px;font-weight:900;line-height:1.3;margin:14px 0}
.art-meta{display:flex;gap:16px;color:var(--muted);font-size:14px;flex-wrap:wrap}
.art-body h2{font-size:26px;font-weight:800;margin:36px 0 16px;padding-left:14px;border-left:4px solid var(--accent)}
.art-body h3{font-size:20px;font-weight:700;margin:26px 0 12px}
.art-body p{color:#c6cfdf;margin-bottom:18px;font-size:16px}
.art-body img{width:100%;border-radius:12px;margin:20px 0;border:1px solid var(--line)}
.art-body blockquote{border-left:4px solid var(--accent);background:rgba(0,212,179,.06);padding:16px 20px;border-radius:0 10px 10px 0;margin:20px 0;color:#c6cfdf}
.art-body ul,.art-body ol{padding-left:22px;margin-bottom:18px}
.art-body ul li{list-style:disc;color:#c6cfdf;margin-bottom:8px}
.art-body ol li{list-style:decimal;color:#c6cfdf;margin-bottom:8px}
.breadcrumb{display:flex;gap:8px;color:var(--muted);font-size:13px;margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{color:var(--muted)}
/* article side */
.art-layout{display:grid;grid-template-columns:1fr 300px;gap:40px}
.side .box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:24px}
.side .box h4{font-size:16px;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.side .hot{display:flex;gap:12px;margin-bottom:14px}
.side .hot .no{font-size:22px;font-weight:900;color:var(--accent);line-height:1.2}
.side .hot a{font-size:14px;font-weight:600;line-height:1.4}
.side .hot a:hover{color:var(--accent)}
.side .cat a{display:block;padding:9px 0;border-bottom:1px dashed var(--line);color:var(--muted);font-size:14px}
.side .cat a:hover{color:var(--accent)}
/* prev/next */
.pn{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:40px 0}
.pn a{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:block}
.pn a small{color:var(--muted);display:block;margin-bottom:6px;font-size:12px}
.pn a b{font-size:14px;font-weight:600}
.pn a:hover{border-color:var(--accent)}
.pn a.next{text-align:right}
/* related */
.rel{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.rel a{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;display:block}
.rel a b{font-size:14px;line-height:1.5}
.rel a:hover{border-color:var(--accent)}
/* comments */
.cmt{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:14px}
.cmt .who{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.cmt .ava{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-weight:800;color:#04201a;font-size:14px}
.cmt .who b{font-size:14px}
.cmt .who small{color:var(--muted);margin-left:auto;font-size:12px}
.cmt p{color:#c6cfdf;font-size:14px}
/* responsive */
@media(max-width:960px){
.hero-in{grid-template-columns:1fr}
.grid{grid-template-columns:1fr 1fr}
.dl-grid{grid-template-columns:repeat(3,1fr)}
.sc-grid{grid-template-columns:1fr 1fr}
.ftr-grid{grid-template-columns:1fr 1fr}
.art-layout{grid-template-columns:1fr}
.rel{grid-template-columns:1fr}
.nav{display:none}
}
@media(max-width:600px){
.grid{grid-template-columns:1fr}
.dl-grid{grid-template-columns:repeat(2,1fr)}
.sc-grid{grid-template-columns:1fr}
.hero h1{font-size:32px}
.sec-title{font-size:26px}
}