:root{--bg:#ffffff;--bg2:#f4f7fb;--ink:#0f172a;--muted:#5b6b83;--brand:#2563eb;--brand2:#1d4ed8;--cyan:#06b6d4;--green:#10b981;--line:#e3e9f2;--card:#ffffff;--radius:14px;--shadow:0 6px 24px rgba(15,23,42,.07);--shadow2:0 14px 44px rgba(37,99,235,.16)}*{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",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}a{color:var(--brand);text-decoration:none}a:hover{color:var(--brand2)}img{max-width:100%;display:block}.wrap{max-width:1180px;margin:0 auto;padding:0 22px}.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:8px 16px;z-index:99}.skip:focus{left:0;top:0}
/* header */
.hd{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.hd-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:19px;color:var(--ink)}.logo img{width:34px;height:34px;border-radius:8px}.logo b{color:var(--brand)}.nav{display:flex;align-items:center;gap:22px}.nav a{color:#33415c;font-weight:600;font-size:15px;padding:6px 2px;position:relative}.nav a:hover{color:var(--brand)}.nav a.act{color:var(--brand)}.nav a.act:after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);border-radius:2px}.lang{display:flex;align-items:center;gap:6px}.lang a{font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:4px 10px;font-weight:600}.lang a.on{color:#fff;background:var(--brand);border-color:var(--brand)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--brand);color:#fff;font-weight:700;border-radius:10px;padding:12px 22px;font-size:15px;transition:.2s;border:1px solid var(--brand)}.btn:hover{background:var(--brand2);color:#fff;border-color:var(--brand2)}.btn.ghost{background:transparent;color:var(--brand);border:1px solid var(--brand)}.btn.ghost:hover{background:rgba(37,99,235,.06)}.btn.green{background:var(--green);border-color:var(--green)}.btn.green:hover{background:#0da271;border-color:#0da271}.btn.lg{padding:15px 30px;font-size:17px;border-radius:12px}
/* hero */
.hero{background:linear-gradient(160deg,#0b1533 0%,#10214f 42%,#0b3a6b 100%);color:#fff;overflow:hidden;position:relative}.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(800px 420px at 78% 22%,rgba(6,182,212,.22),transparent 60%),radial-gradient(600px 400px at 12% 88%,rgba(37,99,235,.28),transparent 60%)}.hero-in{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:72px 0 84px}.hero h1{font-size:44px;line-height:1.22;font-weight:800;letter-spacing:.5px}.hero h1 span{color:#5eead4}.hero .lead{margin:20px 0 10px;font-size:18px;color:#c7d6f2;max-width:560px}.hero .tags{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 26px}.hero .tags span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:6px 14px;font-size:13px;color:#e6efff}.hero .cta{display:flex;gap:14px;flex-wrap:wrap}.hero .meta{display:flex;gap:26px;margin-top:30px;flex-wrap:wrap}.hero .meta div b{font-size:22px;color:#5eead4;display:block}.hero .meta div span{font-size:13px;color:#9fb4d8}
/* client simulator */
.sim{background:#0e1b3c;border:1px solid rgba(255,255,255,.12);border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,.4);overflow:hidden}.sim-bar{display:flex;align-items:center;gap:8px;padding:12px 14px;background:#0a1430;border-bottom:1px solid rgba(255,255,255,.08)}.sim-bar i{width:11px;height:11px;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-bar .tt{flex:1;text-align:center;font-size:12px;color:#7f96c9}.sim-body{padding:20px}.sim-loc{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:12px 14px;margin-bottom:16px}.sim-loc .flag{font-size:20px}.sim-loc b{font-size:15px}.sim-loc span{font-size:12px;color:#8fa8d6}.sim-power{width:118px;height:118px;border-radius:50%;margin:10px auto 14px;background:conic-gradient(#06b6d4 0 72%,#1d4ed8 72% 100%);display:flex;align-items:center;justify-content:center;position:relative}.sim-power:after{content:"";position:absolute;inset:9px;background:#0e1b3c;border-radius:50%}.sim-power em{position:relative;z-index:2;font-style:normal;color:#5eead4;font-weight:800;font-size:15px}.sim-on{text-align:center;color:#34d399;font-size:13px;font-weight:700;margin-bottom:14px}.sim-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.sim-stats .s{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);border-radius:10px;padding:12px;text-align:center}.sim-stats .s b{font-size:18px;color:#eaf1ff;display:block}.sim-stats .s span{font-size:11px;color:#7f96c9}
/* sections */
.sec{padding:72px 0}.sec.t{background:var(--bg2)}.sec-head{text-align:center;max-width:720px;margin:0 auto 44px}.sec-head h2{font-size:32px;font-weight:800;line-height:1.3}.sec-head h2 span{color:var(--brand)}.sec-head p{color:var(--muted);margin-top:12px;font-size:16px}.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--cyan);text-transform:uppercase;margin-bottom:10px}
/* feature cards */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.2s}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow2);border-color:#c7d7f5}.card .ic{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,#2563eb,#06b6d4);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:#fff}.card h3{font-size:18px;margin-bottom:10px}.card p{color:var(--muted);font-size:15px}.card .ic svg{width:26px;height:26px}
/* notice */
.notice{background:linear-gradient(120deg,#0b1533,#123a6b);color:#fff;border-radius:var(--radius);padding:26px 28px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}.notice .badge{background:#f59e0b;color:#0b1533;font-weight:800;font-size:12px;border-radius:6px;padding:4px 10px;flex-shrink:0}.notice p{flex:1;min-width:240px;color:#dbe7ff}.notice .date{color:#8fa8d6;font-size:13px}
/* trust */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}.trust .t{border:1px solid var(--line);border-radius:var(--radius);padding:26px 14px;background:#fff}.trust .t b{font-size:30px;color:var(--brand);display:block}.trust .t span{color:var(--muted);font-size:14px}
/* scenarios */
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.scene{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;gap:16px;align-items:flex-start}.scene .ic{width:46px;height:46px;border-radius:10px;background:rgba(37,99,235,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0}.scene .ic svg{width:24px;height:24px}.scene h3{font-size:17px;margin-bottom:6px}.scene p{color:var(--muted);font-size:14.5px}
/* compare table */
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.tbl table{width:100%;border-collapse:collapse;min-width:680px}.tbl th,.tbl td{padding:16px 18px;text-align:center;border-bottom:1px solid var(--line);font-size:15px}.tbl th{background:var(--bg2);font-weight:700;color:var(--ink)}.tbl td:first-child,.tbl th:first-child{text-align:left}.tbl tr.hl td{background:#eef4ff}.tbl .yes{color:var(--green);font-weight:700}.tbl .no{color:#cbd5e1}
/* news tabs */
.tabs{display:flex;gap:10px;justify-content:center;margin-bottom:30px;flex-wrap:wrap}.tabs label{cursor:pointer;padding:9px 20px;border:1px solid var(--line);border-radius:24px;font-weight:600;font-size:14px;color:#33415c;background:#fff}.tabs input{position:absolute;opacity:0;pointer-events:none}.tabs input:checked+label{background:var(--brand);color:#fff;border-color:var(--brand)}.tabpane{display:none}.tabs input#t1:checked~.panes #p1,.tabs input#t2:checked~.panes #p2,.tabs input#t3:checked~.panes #p3{display:grid}.panes{grid-template-columns:repeat(3,1fr);gap:22px}
/* news card */
.ncard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}.ncard img{height:170px;width:100%;object-fit:cover}.ncard .b{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}.ncard .cat{font-size:12px;color:var(--cyan);font-weight:700}.ncard h3{font-size:16px;line-height:1.45}.ncard h3 a{color:var(--ink)}.ncard h3 a:hover{color:var(--brand)}.ncard .date{font-size:12px;color:#9aa8c0}.ncard p{font-size:13.5px;color:var(--muted)}
/* reviews */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.rv{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}.rv .stars{color:#f59e0b;letter-spacing:2px;font-size:15px}.rv p{color:#33415c;margin:12px 0;font-size:15px}.rv .who{display:flex;align-items:center;gap:10px}.rv .av{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}.rv .who b{font-size:14px}.rv .who span{font-size:12px;color:#9aa8c0;display:block}
/* download area */
.dl{background:linear-gradient(150deg,#0b1533,#0e2a5c);color:#fff;border-radius:20px;padding:48px;text-align:center}.dl h2{font-size:30px;font-weight:800}.dl p{color:#c7d6f2;margin:12px 0 28px}.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.dl-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:22px 12px;color:#fff;transition:.2s}.dl-item:hover{background:rgba(255,255,255,.13);transform:translateY(-3px)}.dl-item .ic{font-size:30px;margin-bottom:10px}.dl-item b{display:block;font-size:15px}.dl-item span{font-size:12px;color:#9fb4d8}.dl-all{margin-top:26px;font-size:14px;color:#9fb4d8}.dl-all a{color:#5eead4;font-weight:600}
/* faq */
.faq{max-width:820px;margin:0 auto}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden}.faq summary{cursor:pointer;padding:18px 22px;font-weight:700;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font-size:22px;color:var(--brand);transition:.2s;font-weight:400}.faq details[open] summary:after{transform:rotate(45deg)}.faq details[open] summary{color:var(--brand)}.faq .ans{padding:0 22px 20px;color:#475569;font-size:15px}.faq .ans ol{margin-left:20px;margin-top:8px}.faq .ans ol li{margin-bottom:8px}.faq .ans b{color:var(--ink)}
/* CTA */
.cta{background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff;text-align:center;padding:64px 22px;border-radius:20px}.cta h2{font-size:32px;font-weight:800}.cta p{color:#eaf4ff;margin:14px 0 26px;font-size:17px}
/* footer */
.ft{background:#0b1533;color:#c7d6f2;padding:56px 0 26px;margin-top:60px}.ft-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}.ft h4{color:#fff;font-size:15px;margin-bottom:14px}.ft a{color:#9fb4d8;display:block;margin-bottom:8px;font-size:14px}.ft a:hover{color:#5eead4}.ft .desc{font-size:14px;color:#9fb4d8;max-width:300px}.ft .bot{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;text-align:center;font-size:13px;color:#7f96c9}.ft .bot a{display:inline;margin:0 6px}
/* breadcrumb */
.crumb{background:var(--bg2);border-bottom:1px solid var(--line);padding:16px 0;font-size:14px}.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;color:var(--muted)}.crumb li+li:before{content:"›";margin-right:8px;color:#9aa8c0}.crumb a{color:var(--muted)}.crumb a:hover{color:var(--brand)}
/* article page */
.art-wrap{display:grid;grid-template-columns:1fr 320px;gap:36px;padding:44px 0}.art{background:#fff}.art h1{font-size:30px;font-weight:800;line-height:1.35;margin:14px 0}.art .ameta{display:flex;gap:18px;color:#9aa8c0;font-size:13px;flex-wrap:wrap;margin-bottom:22px}.art .ameta span{display:inline-flex;align-items:center;gap:5px}.art .lead{font-size:17px;color:#33415c;background:#f4f7fb;border-left:4px solid var(--brand);padding:16px 20px;border-radius:0 8px 8px 0;margin-bottom:24px}.art .body p{font-size:16px;color:#33415c;margin-bottom:18px;text-align:justify}.art .body h2{font-size:22px;font-weight:800;margin:30px 0 14px;padding-left:12px;border-left:4px solid var(--brand)}.art .body figure{margin:22px 0}.art .body figure img{border-radius:10px}.art .body figcaption{font-size:13px;color:#9aa8c0;text-align:center;margin-top:8px}.art .body blockquote{background:#f4f7fb;border-left:4px solid var(--cyan);padding:16px 20px;margin:20px 0;color:#475569;border-radius:0 8px 8px 0}.art .prevnext{display:flex;justify-content:space-between;gap:16px;margin-top:34px;padding-top:20px;border-top:1px solid var(--line)}.art .prevnext a{font-size:14px;color:var(--muted)}.art .prevnext a:hover{color:var(--brand)}.art .back{display:inline-block;margin-top:18px;font-size:14px}
/* sidebar */
.side .box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:22px}.side .box h3{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--brand);display:inline-block}.side .hot li{list-style:none;margin-bottom:12px;padding-bottom:12px;border-bottom:1px dashed var(--line)}.side .hot li:last-child{border-bottom:none}.side .hot a{font-size:14px;color:#33415c;line-height:1.4}.side .hot a:hover{color:var(--brand)}.side .hot .n{color:var(--brand);font-weight:800;margin-right:6px}.side .cats a{display:block;font-size:14px;color:#33415c;padding:7px 0;border-bottom:1px dashed var(--line)}.side .cats a:hover{color:var(--brand)}
/* related */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
/* 404 */
.nf{min-height:68vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 22px}.nf .code{font-size:110px;font-weight:800;line-height:1;background:linear-gradient(135deg,#2563eb,#06b6d4);-webkit-background-clip:text;background-clip:text;color:transparent}.nf h1{font-size:26px;margin:14px 0 10px}.nf p{color:var(--muted);max-width:480px;margin-bottom:26px}
/* hero text split for article */
.sp{display:flex;justify-content:center;gap:8px;margin:24px 0}
@media(max-width:960px){.hero-in{grid-template-columns:1fr;padding:48px 0 60px}.grid3,.reviews,.panes,.dl-grid,.trust,.rel-grid{grid-template-columns:repeat(2,1fr)}.grid2{grid-template-columns:1fr}.art-wrap{grid-template-columns:1fr}.ft-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:34px}}
@media(max-width:600px){.grid3,.reviews,.panes,.dl-grid,.trust,.rel-grid{grid-template-columns:1fr}.nav{display:none}.hd-in{height:60px}.hero h1{font-size:28px}.sec{padding:52px 0}.sec-head h2{font-size:25px}.dl{padding:32px 18px}}