:root{color-scheme:dark;--bg:#090b10;--panel:#141820;--line:#292d37;--text:#f6f6fa;--muted:#a2a8b8;--accent:#7352d6;--highlight:#c5b6ff;font-family:'Avenir Next','PingFang SC','Microsoft YaHei',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--highlight);outline-offset:5px}.wrap{width:min(1200px,calc(100% - 64px));margin:auto}header{border-bottom:1px solid #ffffff0d;background:#090b10ee;position:sticky;top:0;z-index:10;backdrop-filter:blur(16px)}nav{height:88px;display:flex;align-items:center;gap:38px}.brand{display:flex;align-items:center;gap:11px;font-size:25px;font-weight:800;letter-spacing:-1px}.brand-icon{display:block;width:38px;height:38px;flex-shrink:0;border-radius:10px}.brand small{display:block;font-size:10px;color:var(--muted);letter-spacing:2px;font-weight:500;line-height:1}.navlinks{display:flex;gap:30px;margin:auto;font-size:14px;color:#c5c8d2}.navlinks a:hover,footer a:hover{color:var(--highlight)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:22px;padding:13px 23px;border:1px solid transparent;border-radius:9px;font-size:15px;font-weight:600;background:var(--accent);color:white;min-height:48px}.btn:hover{filter:brightness(1.12)}.btn.secondary{background:#ffffff06;border-color:#363b48}.menu{display:none;background:none;border:1px solid var(--line);border-radius:8px;color:white;padding:6px 12px}.hero{position:relative;padding:100px 0 82px;background:radial-gradient(ellipse at 85% 26%,#30234d66,transparent 47%),radial-gradient(ellipse at 5% 83%,#34245244,transparent 35%);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.02fr 1fr;gap:54px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:1.4px;color:var(--highlight);border:1px solid #c5b6ff33;background:#c5b6ff09;padding:6px 13px;border-radius:30px}.eyebrow span{height:6px;width:6px;background:var(--highlight);border-radius:50%}h1{font-size:clamp(42px,4.7vw,64px);line-height:1.2;letter-spacing:-2.8px;margin:24px 0}.hero h1 em{font-style:normal;background:linear-gradient(100deg,#c5b6ff 10%,#ddd4ff 48%,#c5b6ff 95%);background-clip:text;-webkit-text-fill-color:transparent}.lead{color:var(--muted);font-size:17px;line-height:1.9;max-width:520px}.actions{display:flex;gap:13px;margin-top:30px}.note{font-size:12px;color:#969dac;margin-top:18px}.note b{color:var(--highlight);margin-right:7px}.window{border:1px solid #343844;background:linear-gradient(145deg,#20242f,#11141b);border-radius:18px;padding:0 20px 22px;box-shadow:0 30px 90px #0007;transform:rotate(1deg)}.windowbar{display:flex;justify-content:space-between;align-items:center;height:58px;color:#9097a9;font-size:12px}.dots{letter-spacing:4px}.demo-badge{border:1px solid #3b414d;padding:2px 9px;border-radius:5px;font-size:11px}.dashboard{display:grid;grid-template-columns:.8fr 1.2fr;gap:14px}.video{min-height:312px;background:linear-gradient(160deg,#323a55,#37243c 53%,#10111a);border-radius:12px;padding:15px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.video .video-title{font-size:38px;font-weight:800;line-height:1.1;letter-spacing:-1px;position:relative}.video-title span{color:var(--highlight)}.video-top{font-size:10px;letter-spacing:1px}.video-bottom{font-size:11px;color:#cad0dc}.play{width:44px;height:44px;display:grid;place-items:center;border:1px solid #ffffff55;border-radius:50%;margin-bottom:12px}.panel{background:#1c202a;border:1px solid #303540;border-radius:10px;padding:14px}.panel h3{font-size:12px;margin:0 0 12px;color:#a7aebe;font-weight:500}.account{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:600}.avatar{background:#323e48;border-radius:50%;width:30px;height:30px;display:grid;place-items:center;color:var(--highlight)}.status{font-size:10px;color:var(--highlight);display:block;font-weight:400}.postline{display:flex;justify-content:space-between;font-size:11px;border-top:1px solid #ffffff0b;padding:10px 0}.postline:last-child{padding-bottom:0}.state{font-size:10px;color:#93ddc5;background:#235d4d33;border-radius:4px;padding:1px 5px}.state.pending{color:#dbbc78;background:#71531c33}.mini-btn{background:var(--accent);color:white;text-align:center;font-size:12px;padding:10px;border-radius:6px;margin-top:13px}.windowfoot{display:flex;gap:8px;align-items:center;margin-top:16px;font-size:11px;color:#abb2c3}.windowfoot b{color:var(--highlight)}.preview-caption{text-align:center;font-size:11px;margin:17px 0 0;color:#737d90}.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:23px 0}.strip .wrap{display:flex;justify-content:space-between;gap:20px;color:#b5bbc9;font-size:14px}.strip span::before{content:'✓';color:var(--highlight);margin-right:10px}section.content{padding:92px 0}.section-title{max-width:670px}.kicker{font-size:13px;color:var(--highlight);margin-bottom:14px}h2{font-size:36px;line-height:1.35;letter-spacing:-1px;margin:0 0 16px}h3{font-size:19px;line-height:1.5}.section-title p,.feature p,.step p{color:var(--muted);font-size:15px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:38px}.feature{background:#11151d;border:1px solid var(--line);border-radius:14px;padding:28px}.icon{display:grid;place-items:center;width:42px;height:42px;border-radius:11px;background:#c5b6ff0d;color:var(--highlight);font-size:24px}.feature:nth-child(2) .icon{color:#c5b6ff;background:#7352d612}.feature h3{margin:19px 0 10px}.feature p{margin:0}.workflow{background:#10131b;border-top:1px solid #1c222e;border-bottom:1px solid #1c222e}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;margin-top:40px}.step-number{color:var(--accent);font-size:14px;font-weight:700;display:flex;align-items:center;gap:20px}.step-number::after{content:'';height:1px;background:#303541;flex:1}.security{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.security-list{border-left:1px solid var(--line);padding-left:38px}.security-list h3{font-size:17px;margin:0 0 4px}.security-list p{font-size:14px;color:var(--muted);margin:0 0 25px}.faq{max-width:820px;margin:auto}details{border-bottom:1px solid var(--line);padding:21px 0}summary{cursor:pointer;font-size:17px}details p{color:var(--muted);font-size:15px}.cta{text-align:center;padding:62px 24px;background:radial-gradient(ellipse at 50% 100%,#38255f44,transparent 70%),#11151c;border:1px solid #38303c;border-radius:18px;margin-bottom:80px}.cta p{color:var(--muted)}.cta .actions{justify-content:center}footer{border-top:1px solid var(--line);padding:38px 0 25px}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:center}footer .links{display:flex;gap:24px;font-size:13px;color:#c6cad5}footer .fine{font-size:12px;color:#7f879a;margin-top:25px;display:flex;justify-content:space-between;gap:20px}.legal{max-width:850px;margin:60px auto 90px}.legal h1{font-size:46px}.legal h2{font-size:23px;margin-top:34px}.legal p,.legal li{color:#b4bac8}.legal a{color:var(--highlight);text-decoration:underline}.legal .updated{font-size:13px;color:#8992a6}.legal-box{border:1px solid var(--line);background:#121720;padding:20px 25px;border-radius:10px}.legal li{margin-bottom:8px}dialog{color:var(--text);background:#141923;border:1px solid #414958;border-radius:18px;padding:30px;width:min(590px,calc(100% - 32px));max-height:90vh;box-shadow:0 30px 100px #0008}dialog::backdrop{background:#000b;backdrop-filter:blur(7px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;gap:15px}.dialog-head h2{font-size:24px;margin:0}.close{background:none;border:none;color:#ccd1da;font-size:28px}.dialog-note{font-size:13px;color:#a8b0c2}label{display:block;font-size:14px;margin:18px 0 7px}input,select,textarea{width:100%;color:white;background:#0d111a;border:1px solid #3b4353;border-radius:7px;padding:10px 12px}textarea{resize:vertical}label.check{display:flex;gap:10px;align-items:flex-start;font-size:13px}.check input{width:auto;margin-top:6px;accent-color:var(--accent)}.result{font-size:14px;color:var(--highlight);margin-top:18px}.skip{position:absolute;left:20px;top:-70px;background:white;color:black;padding:10px;z-index:30}.skip:focus{top:10px}@media(max-width:1000px){.hero-grid{gap:30px}.wrap{width:calc(100% - 44px)}.hero{padding-top:68px}.dashboard{grid-template-columns:1fr 1.2fr}.video{min-height:280px;padding:12px}.video .video-title{font-size:30px}.navlinks{gap:20px}.security{gap:40px}h1{font-size:46px}.hero .actions{flex-wrap:wrap}}@media(max-width:760px){nav{height:73px;gap:12px;flex-wrap:wrap;justify-content:space-between}.brand{font-size:22px}.menu{display:block}.nav-cta{display:none}.navlinks{display:none;position:absolute;top:73px;left:0;width:100%;padding:24px;background:#141820;border-bottom:1px solid var(--line)}.navlinks.open{display:flex;flex-wrap:wrap}.hero-grid{grid-template-columns:1fr;gap:42px}.hero{padding:52px 0 42px}h1{font-size:46px;letter-spacing:-2px}.lead{font-size:16px}.window{max-width:540px;margin:auto;width:100%;transform:none}.video{min-height:300px}.strip .wrap{display:grid;grid-template-columns:1fr 1fr;font-size:12px;gap:12px}.features,.steps,.security{grid-template-columns:1fr}.features{gap:14px}.steps{gap:24px}.feature{padding:24px}.security-list{padding-left:22px}.security{gap:25px}section.content{padding:60px 0}h2{font-size:29px}.cta{margin-bottom:50px;padding:40px 22px}.footer-top{align-items:flex-start;flex-direction:column}footer .fine{flex-direction:column;gap:4px}footer .links{gap:18px;flex-wrap:wrap}.legal{margin:40px auto 60px}.legal h1{font-size:37px}.actions{gap:10px}.btn{padding:12px 17px;font-size:14px}.wrap{width:calc(100% - 36px)}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

button.mini-btn{border:0;width:100%}
@media(max-width:760px){.hero h1{font-size:clamp(30px,9vw,40px);letter-spacing:-1.4px}.dashboard>*,.hero-grid>*{min-width:0}.panel{padding:11px}.postline{gap:5px}.video .video-title{font-size:clamp(24px,7vw,30px)}}

/* ZetuOS brand asset */
.brand-icon{object-fit:contain;border-radius:8px;background:#000}