:root{--blue:#1677ff;--blue2:#55a6ff;--navy:#09204a;--ink:#14213d;--muted:#66758f;--line:#dce8f7;--paper:#f7fbff;--yellow:#ffcd57;--mint:#5bd6b2;--shadow:0 24px 55px rgba(36,84,146,.14);--radius:24px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;line-height:1.7}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}
.topbar{position:sticky;top:0;z-index:99;height:70px;border-bottom:1px solid rgba(220,232,247,.9);background:rgba(255,255,255,.9);backdrop-filter:blur(18px)}.nav{height:100%;display:flex;align-items:center;gap:34px}.logo{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:900}.logo-mark{width:36px;height:36px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,#4ca2ff,#1269eb);border-radius:12px 12px 12px 4px;box-shadow:0 8px 18px rgba(22,119,255,.25)}.links{display:flex;gap:28px;margin-left:auto;color:#40516e;font-size:14px}.links a:hover,.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 22px rgba(22,119,255,.24)}.btn-primary:hover{background:#075fd3;transform:translateY(-2px)}.btn-outline{color:var(--blue);background:#fff;border-color:#bcd7fb}.btn-outline:hover{transform:translateY(-2px);border-color:var(--blue)}.btn-white{color:var(--blue);background:#fff}.btn-ghost{color:#fff;border-color:rgba(255,255,255,.45)}
.hero{position:relative;overflow:hidden;padding:86px 0 78px;background:linear-gradient(155deg,#edf6ff 0%,#fff 55%,#e9f8ff 100%)}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(22,119,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(22,119,255,.05) 1px,transparent 1px);background-size:36px 36px;mask-image:linear-gradient(to bottom,#000,transparent)}.hero-grid{position:relative;display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:58px}.pill{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;color:#1068dc;background:#e2f0ff;border:1px solid #c9e2ff;border-radius:999px;font-size:13px;font-weight:800}.pill:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue)}h1{margin:18px 0 16px;font-size:clamp(42px,5vw,66px);line-height:1.13;letter-spacing:-2px}.hero h1 span{color:var(--blue)}.lead{margin:0 0 28px;color:var(--muted);font-size:18px}.actions{display:flex;flex-wrap:wrap;gap:13px}.requirements{display:flex;flex-wrap:wrap;gap:16px;margin:22px 0 0;padding:0;list-style:none;color:#5e6f8b;font-size:12px}.requirements li:before{content:"✓";margin-right:5px;color:#16a66a;font-weight:900}
.office-stage{position:relative;padding:18px}.office-stage:before{content:"";position:absolute;left:5%;right:5%;bottom:-5px;height:42px;background:rgba(39,91,155,.16);filter:blur(18px);border-radius:50%}.office-photo{position:relative;overflow:hidden;border:9px solid #fff;border-radius:30px;box-shadow:var(--shadow);transform:perspective(1000px) rotateY(-3deg) rotateX(2deg)}.office-photo img{width:100%;aspect-ratio:16/10;object-fit:cover}.room-label{position:absolute;right:-6px;top:4px;padding:13px 17px;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);font-size:13px;font-weight:800}.mini-desk{position:absolute;left:-9px;bottom:2px;display:flex;align-items:center;gap:10px;padding:12px 16px;background:#fff;border-radius:14px;box-shadow:var(--shadow);font-size:13px}.desk-dot{width:12px;height:12px;border-radius:4px;background:var(--mint);box-shadow:16px 0 0 var(--yellow),32px 0 0 var(--blue)}.mini-desk span{margin-left:30px}
.trust{padding:25px 0;border-bottom:1px solid var(--line)}.trust-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.trust strong{font-size:18px}.brands{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:28px;color:#52617b;font-weight:900}
.section{padding:92px 0}.soft{background:var(--paper)}.section-head{max-width:720px;margin:0 auto 46px;text-align:center}.section-head.left{margin-left:0;text-align:left}.eyebrow{color:var(--blue);font-size:12px;font-weight:900;letter-spacing:1.5px}.section-head h2,.copy h2{margin:10px 0 12px;font-size:clamp(30px,4vw,44px);line-height:1.25;letter-spacing:-1px}.section-head p,.copy>p{margin:0;color:var(--muted);font-size:16px}
.download-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.download-card{position:relative;overflow:hidden;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 9px 30px rgba(35,75,125,.06);transition:.22s}.download-card:before{content:"";position:absolute;width:90px;height:90px;right:-28px;top:-35px;border-radius:22px;background:#e9f4ff;transform:rotate(22deg)}.download-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#b6d7ff}.os{position:relative;width:52px;height:52px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--blue2),var(--blue));border-radius:15px;font-size:22px;font-weight:900}.download-card h3{margin:20px 0 2px;font-size:21px}.version{color:var(--blue);font-size:12px;font-weight:800}.meta{margin:18px 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:10px;margin:5px 0;color:var(--muted);font-size:12px}.meta span:last-child{color:#35445e;text-align:right}.download-card .btn{width:100%}
.feature-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.feature{padding:25px 20px;border:1px solid var(--line);border-radius:20px;background:#fff;text-align:center;transition:.22s}.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.feature-icon{width:52px;height:52px;display:grid;place-items:center;margin:0 auto 17px;color:var(--blue);background:#e9f4ff;border-radius:16px;font-size:22px;font-weight:900}.feature:nth-child(2) .feature-icon{color:#7454d6;background:#f0ebff}.feature:nth-child(3) .feature-icon{color:#14a17b;background:#e3faf3}.feature:nth-child(4) .feature-icon{color:#d88711;background:#fff4dc}.feature:nth-child(5) .feature-icon{color:#e65d74;background:#fff0f3}.feature h3{margin:0 0 8px;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}.copy .pill{margin-bottom:3px}.points{display:grid;gap:15px;margin:28px 0}.point{display:flex;gap:12px}.check{flex:0 0 25px;height:25px;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:8px;font-size:12px}.product-room{position:relative;padding:22px;background:#dfecfa;border:1px solid #bed3ea;border-radius:28px;box-shadow:var(--shadow)}.product-room:before{content:"DIGITAL OFFICE 01";position:absolute;top:8px;right:18px;color:#7891b0;font-size:9px;font-weight:900;letter-spacing:1px}.product-room>img{width:100%;border-radius:19px}.room-thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}.room-thumbs img{height:82px;width:100%;object-fit:cover;border:4px solid #fff;border-radius:12px}
.case-room{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.case-main,.case-side article{position:relative;overflow:hidden;border-radius:24px}.case-main img{width:100%;height:100%;min-height:420px;object-fit:cover}.case-main .overlay{position:absolute;inset:auto 0 0;padding:70px 28px 25px;color:#fff;background:linear-gradient(transparent,rgba(3,18,48,.9))}.overlay h3{margin:3px 0;font-size:25px}.overlay p{margin:0;color:#d9e8ff}.case-side{display:grid;gap:20px}.case-side article{display:grid;grid-template-columns:145px 1fr;align-items:center;border:1px solid var(--line);background:#fff}.case-side img{width:100%;height:100%;min-height:128px;object-fit:cover}.case-side div{padding:18px}.case-side h3{margin:0 0 5px}.case-side p{margin:0;color:var(--muted);font-size:13px}
.content-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:30px}.news-list{display:grid;gap:13px}.news{display:grid;grid-template-columns:112px 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 18px}.news small{color:var(--blue);font-weight:800}.news h3{margin:3px 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;border-radius:30px;color:#fff;text-align:center;background:linear-gradient(135deg,#075ed6,#258cff)}.cta:before,.cta:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.22);border-radius:24px;transform:rotate(28deg)}.cta:before{width:240px;height:180px;left:-120px;top:-90px}.cta:after{width:180px;height:140px;right:-70px;bottom:-80px}.cta h2{position:relative;margin:0 0 8px;font-size:clamp(30px,4vw,44px)}.cta p{position:relative;margin:0 0 22px;color:#dcecff}.benefits{position:relative;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{position:relative;justify-content:center}
.page-hero{padding:72px 0 62px;text-align:center;background:linear-gradient(180deg,#edf6ff,#fff)}.page-hero h1{margin:13px 0 10px}.page-hero p{max-width:680px;margin:auto;color:var(--muted)}.quick-actions{justify-content:center;margin-top:25px}.tip{margin-top:25px;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:92px;padding:16px;border:1px solid var(--line);border-radius:18px;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:34px;scroll-margin-top:95px}.faq-section h2{font-size:25px}.search{display:flex;max-width:650px;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:52px 0 24px;color:#aab8ce;background:#071733}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:45px}.footer .logo{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:35px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:12px}
@media(max-width:950px){.links{display:none}.nav>.btn{margin-left:auto}.hero-grid,.split,.case-room,.content-grid{grid-template-columns:1fr}.download-grid{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:repeat(3,1fr)}.office-stage{margin-top:20px}.help-layout{grid-template-columns:1fr}.help-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.container{width:min(100% - 28px,1180px)}.topbar{height:64px}.nav{gap:10px}.nav>.btn{min-height:38px;padding:0 12px;font-size:12px}.hero{padding:62px 0}.hero-grid{gap:30px}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}.case-side article{grid-template-columns:110px 1fr}.news{grid-template-columns:90px 1fr}.footer-grid{grid-template-columns:1fr}.room-label{right:4px}.mini-desk{left:4px}.cta{padding:50px 18px}}