:root{--bg:#F7F4EC;--bg2:#F0ECE1;--card:#FFFFFF;--ink:#1F2330;--muted:#5B6272;--tile:#E8ECF5;--blue:#3B82F6;--blue-d:#2F6FDB;--slate:#4A5160;--green:#22C55E;--line:#E7E2D5;--radius:26px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",Roboto,Inter,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--blue-d);text-decoration:none}a:hover{text-decoration:underline}
img,svg{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(247,244,236,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:21px;letter-spacing:-.4px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand img{width:38px;height:38px;border-radius:10px;box-shadow:0 4px 10px rgba(0,80,200,.22)}
.links{display:flex;align-items:center;gap:26px;font-weight:600;font-size:15px}
.links a{color:var(--muted)}.links a:hover{color:var(--ink);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--blue);color:#fff!important;font-weight:700;border-radius:999px;padding:12px 24px;font-size:15px;border:0;cursor:pointer;box-shadow:0 6px 16px rgba(59,130,246,.32);transition:transform .15s,background .15s}
.btn:hover{background:var(--blue-d);text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:#fff;color:var(--ink)!important;box-shadow:0 1px 3px rgba(31,35,48,.12)}
.btn.ghost:hover{background:#fff}
.btn.sm{padding:9px 18px;font-size:14px}
/* hero */
.hero{padding:64px 0 40px}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border-radius:999px;padding:7px 16px;font-size:13.5px;font-weight:700;color:var(--muted);box-shadow:0 1px 3px rgba(31,35,48,.1)}
.eyebrow i{width:9px;height:9px;border-radius:50%;background:var(--green);display:inline-block}
h1{font-size:clamp(40px,6vw,66px);line-height:1.04;letter-spacing:-2px;font-weight:800;margin:20px 0 18px}
h1 span{color:var(--blue)}
.lead{font-size:20px;color:var(--muted);max-width:560px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 18px}
.trust{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--muted);font-weight:600}
.trust span:before{content:"✓";color:var(--green);margin-right:7px;font-weight:800}
.stage{display:flex;justify-content:center;position:relative}
.stage:before{content:"";position:absolute;inset:6% 4% 0;background:radial-gradient(closest-side,#DCE6FA,rgba(220,230,250,0));z-index:0}
.dev{position:relative;z-index:1;width:316px;background:#1F2330;border-radius:40px;padding:8px;box-shadow:0 30px 60px rgba(31,35,48,.26);transform:rotate(2.5deg)}
.dev .in{width:300px;height:600px;border-radius:32px;overflow:hidden}
.dev .sc2{transform:scale(.8333);transform-origin:0 0;width:360px;height:780px}
/* sections */
section{padding:64px 0}
.sec-head{max-width:780px;margin-bottom:38px}
.sec-head h2{font-size:clamp(30px,4vw,42px);letter-spacing:-1.2px;line-height:1.1;font-weight:800;margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:18px}
.kicker{font-size:13px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;color:var(--blue-d);margin-bottom:10px}
.grid{display:grid;gap:16px}
.g4{grid-template-columns:repeat(4,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border-radius:var(--radius);padding:26px;box-shadow:0 1px 2px rgba(31,35,48,.06),0 8px 24px rgba(31,35,48,.04)}
.card h3{font-size:18px;letter-spacing:-.2px;margin:14px 0 6px}
.card p{color:var(--muted);font-size:15.5px}
.ic{width:46px;height:46px;border-radius:15px;background:var(--tile);display:flex;align-items:center;justify-content:center}
.ic svg{width:24px;height:24px;stroke:var(--blue-d);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.band{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{counter-reset:s}
.step{position:relative;padding-top:6px}
.step:before{counter-increment:s;content:counter(s);display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;font-size:18px;margin-bottom:14px;box-shadow:0 6px 14px rgba(59,130,246,.3)}
.step h3{font-size:19px;margin-bottom:6px}.step p{color:var(--muted)}
/* slate download cards */
.dl{background:var(--slate);color:#fff;border-radius:var(--radius);padding:30px;display:flex;flex-direction:column}.dl .btn{align-self:flex-start;margin-top:auto}
.dl h3{font-size:22px;margin-bottom:6px}.dl p{color:#D3D7E2;margin-bottom:6px}
.dl .meta{font-size:13.5px;color:#B9BECB;margin:12px 0 18px}
.dl .btn.ghost{background:#5E6678;color:#fff!important;box-shadow:none}
.dl .btn.light{background:#fff;color:var(--ink)!important}
.pill{display:inline-block;background:var(--tile);border-radius:999px;padding:4px 12px;font-size:13px;font-weight:700;color:var(--muted)}
ol.num{padding-left:22px;color:var(--muted)}ol.num li{margin:8px 0}ol.num b,ul.chk b{color:var(--ink)}
ul.chk{list-style:none;color:var(--muted)}ul.chk li{margin:9px 0;padding-left:26px;position:relative}
ul.chk li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800}
.note{background:#FFF8E6;border:1px solid #F3E2B0;border-radius:18px;padding:16px 20px;color:#6B5516;font-size:15px;margin-top:16px}
code{background:var(--tile);padding:2px 8px;border-radius:8px;font-family:Consolas,"Cascadia Mono",monospace;font-size:.92em;color:var(--ink)}
details{background:#fff;border-radius:20px;padding:4px 22px;margin-bottom:10px;box-shadow:0 1px 2px rgba(31,35,48,.06)}
summary{cursor:pointer;font-weight:700;padding:16px 0;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";font-size:22px;color:var(--blue-d);font-weight:700}
details[open] summary:after{content:"–"}
details p{color:var(--muted);padding-bottom:16px}
footer{background:var(--bg2);border-top:1px solid var(--line);padding:44px 0;color:var(--muted);font-size:14.5px}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
footer a{color:var(--muted)}footer a:hover{color:var(--ink)}
footer .fl{display:flex;gap:22px;flex-wrap:wrap}
/* doc pages */
.doc{padding:56px 0 80px}
.doc .wrap{max-width:780px}
.doc h1{font-size:clamp(34px,5vw,48px);letter-spacing:-1.4px;margin:6px 0 10px}
.doc .upd{color:var(--muted);margin-bottom:26px}
.doc h2{font-size:23px;letter-spacing:-.4px;margin:34px 0 10px}
.doc p,.doc li{color:#3b4152;font-size:16.5px;margin:10px 0}
.doc ul{padding-left:22px}
.doc .card{margin:18px 0}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}.stage{margin-top:20px}.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:1fr}.g2{grid-template-columns:1fr}.links a:not(.btn){display:none}}
@media(max-width:560px){.g4{grid-template-columns:1fr}.hero{padding-top:36px}.dev{transform:none}}

.ui{width:360px;height:780px;background:#EEF1F8;position:relative;overflow:hidden;font-family:"Segoe UI",Roboto,Inter,system-ui,sans-serif;color:#1F2330;padding:12px 12px 0;text-align:left}
.ui,.ui *{box-sizing:border-box}
.ui .top{display:flex;align-items:center;justify-content:space-between;height:34px}
.ui .pill{background:#E4E8F2;border-radius:18px;padding:6px 14px;font-weight:700;font-size:15px;display:flex;gap:7px;align-items:center;line-height:20px}
.ui .dot{width:9px;height:9px;border-radius:50%;background:#22C55E;display:inline-block}
.ui .batt{font-weight:700;font-size:14px;color:#5B6272;display:flex;gap:6px;align-items:center}
.ui .prev{margin-top:8px;height:189px;border-radius:28px;background:#000;position:relative;overflow:hidden}
.ui .scene{position:absolute;inset:0;background:linear-gradient(160deg,#4a4130 0%,#2c2619 55%,#1c1912 100%)}
.ui .scene.blur{filter:blur(9px);transform:scale(1.15)}
.ui .win{position:absolute;left:14px;top:22px;width:62px;height:104px;background:linear-gradient(#3f6b45,#2e5236);border-radius:4px;opacity:.85}
.ui .lamp{position:absolute;right:30px;top:48px;width:10px;height:10px;border-radius:50%;background:#ffb561;box-shadow:0 0 22px 10px rgba(255,181,97,.45)}
.ui .shelf{position:absolute;right:0;bottom:0;width:90px;height:130px;background:linear-gradient(#3a2a1d,#26190f);border-radius:6px 0 0 0}
.ui .person{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:200px;height:189px}
.ui .respill{position:absolute;left:12px;bottom:12px;background:#1C1C1E;color:#fff;font-weight:700;font-size:12px;padding:5px 12px;border-radius:16px}
.ui .actions{display:flex;justify-content:center;align-items:center;gap:18px;margin-top:10px}
.ui .cbtn{background:#fff;border-radius:50%;width:52px;height:52px;display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;color:#1F2330;box-shadow:0 1px 2px rgba(31,35,48,.08)}
.ui .cbtn.stop{width:60px;height:60px;background:#3B82F6}
.ui .cbtn.stop i{display:block;width:20px;height:20px;background:#fff;border-radius:3px}
.ui .scroll{position:absolute;left:12px;right:12px;top:330px;bottom:0;overflow:hidden}
.ui .sc{position:relative}
.ui .slate{background:#4A5160;border-radius:26px;padding:14px}
.ui .row{display:flex;align-items:center}
.ui .url{flex:1;color:#fff;font-weight:700;font-size:14px;line-height:1.25}
.ui .gd{color:#4ADE80;font-size:12px;margin-right:7px}
.ui .btn{background:#5E6678;color:#fff;border-radius:12px;height:34px;padding:0 14px;display:flex;align-items:center;font-size:12px;font-weight:600;margin-left:8px;white-space:nowrap}
.ui .tip{color:#4ADE80;font-weight:700;font-size:12.5px;margin-top:6px;line-height:1.3}
.ui .stats{color:#E5E7EE;font-size:12.5px;margin-top:5px}
.ui .usb{color:#B9BECB;font-size:11px;margin-top:2px}
.ui .pinrow{margin-top:8px}.ui .pinrow b{flex:1;color:#fff;font-size:14.5px}
.ui .card{background:#fff;border-radius:22px;padding:8px;margin-top:8px}
.ui .card.p12{padding:12px}
.ui .sel{flex:1;background:#E4E8F2;border-radius:16px;height:40px;display:flex;align-items:center;padding:0 12px;font-weight:700;font-size:13.5px;justify-content:space-between}
.ui .sel:after{content:"▾";font-size:11px;margin-left:6px}
.ui .fbtn{background:#E4E8F2;border-radius:16px;height:40px;padding:0 14px;display:flex;align-items:center;font-weight:600;font-size:13px;margin-left:8px}
.ui .tiles{display:flex;margin-top:4px}
.ui .tile{flex:1;background:#fff;border-radius:22px;padding:11px;margin:4px 4px 0}
.ui .tl{font-size:11.5px;color:#5B6272;display:flex;justify-content:space-between}
.ui .tl b{color:#1F2330}
.ui .slider{height:4px;background:#DDE1EC;border-radius:2px;position:relative;margin:14px 6px 10px}
.ui .slider i{position:absolute;left:0;top:0;bottom:0;background:#3B82F6;border-radius:2px}
.ui .slider u{position:absolute;top:-7px;width:18px;height:18px;border-radius:50%;background:#3B82F6;margin-left:-9px;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.ui .chips{display:flex;gap:6px;margin-top:2px}
.ui .chip{flex:1;background:#E4E8F2;border-radius:16px;height:38px;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:13px}
.ui .chip.on{background:#3B82F6;color:#fff}
.ui .zh{display:flex;justify-content:space-between;font-weight:700;font-size:14.5px}
.ui .miniSel{background:#E4E8F2;border-radius:16px;height:38px;margin-top:6px;display:flex;align-items:center;padding:0 10px;font-weight:700;font-size:13px;justify-content:space-between}
.ui .miniSel:after{content:"▾";font-size:10px}
.ui .sw{width:44px;height:26px;border-radius:13px;background:#E4E1EA;border:2px solid #8A8F9C;position:relative;margin:8px 0 0 auto}
.ui .sw:after{content:"";position:absolute;left:3px;top:3px;width:16px;height:16px;border-radius:50%;background:#79747E}
.ui .sw.on{background:#3B82F6;border-color:#3B82F6}.ui .sw.on:after{left:21px;background:#fff;width:18px;height:18px;top:2px}
.ui .pbtn{flex:1;border-radius:24px;height:44px;margin:4px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;background:#fff;color:#1F2330}
.ui .pbtn.pr{background:#3B82F6;color:#fff}
.ui .dlg{position:absolute;inset:0;background:rgba(20,23,34,.5);display:flex;align-items:center;justify-content:center;z-index:5}
.ui .dlgb{width:300px;background:#fff;border-radius:28px;padding:22px 22px 14px;box-shadow:0 12px 40px rgba(0,0,0,.35)}
.ui .dlgb h4{margin:0 0 8px;font-size:20px;font-weight:600}
.ui .dlgb p{margin:0 0 14px;font-size:13px;color:#49454F;line-height:1.4}
.ui .dlgb .pinin{border-bottom:2px solid #3B82F6;font-size:22px;letter-spacing:5px;padding:4px 2px;font-weight:600;margin-bottom:14px}
.ui .dlgb .acts{display:flex;justify-content:flex-end;gap:16px;color:#3B82F6;font-weight:700;font-size:13.5px}