:root{--blue:#1677ff;--cyan:#34c7ff;--ink:#15233d;--muted:#69778f;--line:#dfe8f4;--soft:#f5f9fe;--navy:#071833;--green:#20bd80;--orange:#ff9a3d;--purple:#8068ed;--radius:21px;--shadow:0 22px 58px rgba(27,67,123,.13)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;line-height:1.68;background:#fff}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.header{position:sticky;top:0;z-index:100;height:70px;background:rgba(255,255,255,.93);border-bottom:1px solid rgba(224,233,244,.9);backdrop-filter:blur(16px)}.nav{height:100%;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:900}.brand-mark{width:38px;height:38px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--cyan),var(--blue));border-radius:13px 13px 13px 4px;box-shadow:0 8px 22px rgba(22,119,255,.25)}.nav-links{display:flex;gap:27px;margin-left:auto;color:#47566f;font-size:14px}.nav-links a:hover,.nav-links .active{color:var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border:1px solid transparent;border-radius:12px;font-weight:800;transition:.2s}.btn-primary{color:#fff;background:var(--blue);box-shadow:0 10px 24px rgba(22,119,255,.25)}.btn-primary:hover{transform:translateY(-2px);background:#0862d8}.btn-outline{color:var(--blue);background:#fff;border-color:#bad6fb}.btn-white{color:var(--blue);background:#fff}.btn-ghost{color:#fff;border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.08)}
.hero{position:relative;overflow:hidden;padding:86px 0 78px;background:linear-gradient(145deg,#eef6ff,#fff 58%,#f1faff)}.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 49.8%,rgba(22,119,255,.04) 50%,transparent 50.2%);background-size:48px 100%}.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:.86fr 1.14fr;align-items:center;gap:52px}.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;color:#0d6ddd;background:#e4f2ff;border:1px solid #c8e2ff;border-radius:999px;font-size:12px;font-weight:800}.badge:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(32,189,128,.12)}h1{margin:19px 0 16px;font-size:clamp(42px,5vw,64px);line-height:1.13;letter-spacing:-2px}.hero h1 span{color:var(--blue)}.lead{margin:0 0 29px;color:var(--muted);font-size:18px}.actions{display:flex;flex-wrap:wrap;gap:13px}.requirements{display:flex;flex-wrap:wrap;gap:17px;margin:21px 0 0;padding:0;list-style:none;color:#60708a;font-size:12px}.requirements li:before{content:"✓";margin-right:6px;color:var(--green);font-weight:900}
.waterfall{height:500px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;overflow:hidden;mask-image:linear-gradient(transparent,#000 8%,#000 90%,transparent)}.stream{display:grid;align-content:start;gap:12px;animation:flow 18s linear infinite}.stream:nth-child(2){transform:translateY(-80px);animation-duration:22s}.stream:nth-child(3){transform:translateY(-30px);animation-duration:20s}@keyframes flow{50%{transform:translateY(-90px)}}.msg{padding:16px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.95);box-shadow:0 10px 30px rgba(27,67,123,.09)}.msg-head{display:flex;align-items:center;gap:9px;margin-bottom:9px;font-size:12px;font-weight:900}.avatar{width:30px;height:30px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:10px}.msg:nth-child(even) .avatar{background:var(--orange)}.stream:nth-child(2) .avatar{background:var(--purple)}.stream:nth-child(3) .avatar{background:var(--green)}.msg p{margin:0;color:#53637c;font-size:12px}.msg small{display:block;margin-top:9px;color:#95a2b5}.msg.image{padding:7px}.msg.image img{width:100%;height:110px;object-fit:cover;border-radius:11px}.msg.image div{padding:9px 8px 5px;font-size:12px;font-weight:800}
.trust{padding:24px 0;border-bottom:1px solid var(--line)}.trust-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.trust strong{font-size:18px}.brands{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:29px;color:#53617a;font-weight:900}.section{padding:92px 0}.soft{background:var(--soft)}.dark{color:#fff;background:linear-gradient(135deg,#071630,#0b2a56)}.section-head{max-width:740px;margin:0 auto 46px;text-align:center}.eyebrow{color:var(--blue);font-size:12px;font-weight:900;letter-spacing:1.5px}.dark .eyebrow{color:#4ed6ff}.section-head h2,.copy h2{margin:9px 0 12px;font-size:clamp(30px,4vw,44px);line-height:1.23;letter-spacing:-1px}.section-head p,.copy>p{margin:0;color:var(--muted);font-size:16px}.dark .section-head p{color:#afc0d9}
.download-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.download-card{padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.22s}.download-card:hover{transform:translateY(-6px);border-color:#acd4ff;box-shadow:var(--shadow)}.os{width:53px;height:53px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--cyan),var(--blue));border-radius:16px;font-size:22px;font-weight:900}.download-card h3{margin:19px 0 2px;font-size:21px}.version{color:var(--blue);font-size:12px;font-weight:800}.meta{margin:17px 0;padding:14px 0;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line)}.meta div{display:flex;justify-content:space-between;gap:9px;margin:5px 0;color:var(--muted);font-size:12px}.meta span:last-child{color:#34435c;text-align:right}.download-card .btn{width:100%}
.feature-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:15px}.feature{padding:25px 20px;border:1px solid var(--line);border-radius:20px;background:#fff;transition:.2s}.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.feature-icon{width:50px;height:50px;display:grid;place-items:center;margin-bottom:18px;color:#fff;background:var(--blue);border-radius:16px;font-size:21px;font-weight:900}.feature:nth-child(2) .feature-icon{background:var(--purple)}.feature:nth-child(3) .feature-icon{background:var(--green)}.feature:nth-child(4) .feature-icon{background:var(--orange)}.feature:nth-child(5) .feature-icon{background:#e55d82}.feature h3{margin:0 0 7px;font-size:17px}.feature p{margin:0;color:var(--muted);font-size:13px}.split{display:grid;grid-template-columns:1fr 1.05fr;align-items:center;gap:68px}.points{display:grid;gap:14px;margin:28px 0}.point{display:flex;gap:11px}.check{flex:0 0 24px;height:24px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:50%;font-size:12px}.product>img{width:100%;border-radius:23px;box-shadow:var(--shadow)}.product-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:11px 18px 0}.product-strip img{height:82px;width:100%;object-fit:cover;border-radius:10px;box-shadow:0 8px 20px rgba(13,52,103,.12)}
.case-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:23px}.case-main{position:relative;overflow:hidden;border-radius:22px}.case-main img{width:100%;height:100%;min-height:420px;object-fit:cover}.case-main div{position:absolute;inset:auto 0 0;padding:75px 28px 25px;background:linear-gradient(transparent,rgba(2,14,34,.93))}.case-main h3{margin:3px 0;font-size:24px}.case-main p{margin:0;color:#d2e3f8}.case-side{display:grid;gap:13px}.case-side article{display:flex;align-items:center;gap:14px;padding:18px;border:1px solid rgba(89,190,255,.17);border-radius:17px;background:rgba(255,255,255,.05)}.case-side b{width:42px;height:42px;display:grid;place-items:center;flex:0 0 42px;border-radius:13px;background:linear-gradient(145deg,var(--cyan),var(--blue))}.case-side h3{margin:0 0 2px;font-size:15px}.case-side p{margin:0;color:#afc1da;font-size:12px}
.content-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}.news-list{display:grid;gap:13px}.news{display:grid;grid-template-columns:115px 1fr;align-items:center;overflow:hidden;border:1px solid var(--line);border-radius:17px;background:#fff}.news img{width:100%;height:100px;object-fit:cover}.news div{padding:14px 17px}.news small{color:var(--blue);font-weight:800}.news h3{margin:2px 0;font-size:16px}.news p{margin:0;color:var(--muted);font-size:12px}.faq-list{display:grid;gap:10px}details{border:1px solid var(--line);border-radius:15px;background:#fff}summary{padding:16px 18px;cursor:pointer;list-style:none;font-size:14px;font-weight:800}summary:after{content:"+";float:right;color:var(--blue);font-size:18px}details[open] summary:after{content:"−"}details p{margin:0;padding:0 18px 17px;color:var(--muted);font-size:13px}
.cta{position:relative;overflow:hidden;padding:66px 28px;color:#fff;text-align:center;border-radius:28px;background:linear-gradient(135deg,#0969dd,#268ef9)}.cta:before{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 35%,rgba(255,255,255,.08) 35.3%,transparent 35.6%,transparent 62%,rgba(255,255,255,.08) 62.3%,transparent 62.6%)}.cta h2,.cta p,.cta .benefits,.cta .actions{position:relative}.cta h2{margin:0 0 8px;font-size:clamp(30px,4vw,44px)}.cta p{margin:0 0 20px;color:#dcecff}.benefits{display:flex;flex-wrap:wrap;justify-content:center;gap:18px;margin-bottom:25px;font-size:13px}.benefits span:before{content:"✓";margin-right:6px}.cta .actions{justify-content:center}
.page-hero{padding:75px 0 65px;text-align:center;background:linear-gradient(180deg,#eaf5ff,#fff)}.page-hero h1{margin:14px 0 10px}.page-hero p{max-width:680px;margin:auto;color:var(--muted)}.quick-actions{justify-content:center;margin-top:25px}.tip{margin-top:24px;padding:18px 20px;border:1px solid var(--line);border-radius:15px;background:#f8fbff;color:var(--muted);font-size:13px;scroll-margin-top:90px}.help-layout{display:grid;grid-template-columns:250px 1fr;gap:38px;align-items:start}.help-nav{position:sticky;top:94px;padding:16px;border:1px solid var(--line);border-radius:17px;background:#fff}.help-nav strong{display:block;padding:8px 10px 12px}.help-nav a{display:block;padding:9px 10px;color:var(--muted);border-radius:9px;font-size:13px}.help-nav a:hover{color:var(--blue);background:#ebf5ff}.faq-section{margin-bottom:35px;scroll-margin-top:95px}.faq-section h2{font-size:25px}.search{display:flex;max-width:640px;margin:24px auto 0;padding:7px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}.search input{flex:1;min-width:0;padding:0 13px;border:0;outline:0}
.footer{padding:50px 0 24px;color:#a8bad3;background:#05142c}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:45px}.footer .brand{color:#fff}.footer p{max-width:330px;font-size:13px}.footer-col strong{display:block;margin-bottom:12px;color:#fff}.footer-col a{display:block;margin:7px 0;font-size:13px}.footer-col a:hover{color:#fff}.copyright{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:12px}
@media(max-width:950px){.nav-links{display:none}.nav>.btn{margin-left:auto}.hero-grid,.split,.case-grid,.content-grid{grid-template-columns:1fr}.download-grid{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:repeat(3,1fr)}.help-layout{grid-template-columns:1fr}.help-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr}.waterfall{height:430px}}
@media(max-width:620px){.container{width:min(100% - 28px,1180px)}.header{height:64px}.nav>.btn{min-height:38px;padding:0 12px;font-size:12px}.hero{padding:62px 0}h1{font-size:39px}.section{padding:66px 0}.download-grid,.feature-grid{grid-template-columns:1fr}.trust-inner{align-items:flex-start;flex-direction:column}.brands{justify-content:flex-start;gap:16px}.waterfall{grid-template-columns:1fr 1fr;height:400px}.stream:nth-child(3){display:none}.news{grid-template-columns:90px 1fr}.footer-grid{grid-template-columns:1fr}.cta{padding:50px 18px}}