:root{--a:#0ea5e9;--b:#22c55e;--bg:#0d0f14;--fg:#f4f5f8;--mut:#a3a9b8;--card:#171a22;--line:#262b37;--btn:#fff;--btnfg:#0d0f14}
@media(prefers-color-scheme:light){:root{--bg:#f7f6f3;--fg:#14161c;--mut:#5b6170;--card:#fff;--line:#e4e1da;--btn:#14161c;--btnfg:#fff}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
header.top{position:sticky;top:0;z-index:5;backdrop-filter:blur(14px);background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;gap:14px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;text-decoration:none;letter-spacing:-.01em}
.brand img{width:30px;height:30px;border-radius:8px}.sp{flex:1}
.lang{font-size:14px;text-decoration:none;color:var(--mut);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.lang:hover{color:var(--fg)}
.hero{position:relative;overflow:hidden;padding:64px 0 72px}
.hero:before{content:"";position:absolute;inset:-20% -10% auto -10%;height:120%;background:radial-gradient(60% 55% at 78% 20%,color-mix(in srgb,var(--a) 55%,transparent),transparent 70%),radial-gradient(50% 50% at 12% 0%,color-mix(in srgb,var(--b) 40%,transparent),transparent 70%);opacity:.55;pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.icon{width:104px;height:104px;border-radius:24px;box-shadow:0 18px 50px -12px color-mix(in srgb,var(--a) 70%,transparent),0 0 0 1px rgba(255,255,255,.08);display:block;background:linear-gradient(135deg,var(--a),var(--b))}
h1{font-size:clamp(40px,6.2vw,68px);line-height:1.02;letter-spacing:-.035em;margin:22px 0 14px}
.tag{font-size:clamp(19px,2.4vw,24px);color:var(--mut);margin:0 0 26px;max-width:30ch}
.badges{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--btn);color:var(--btnfg);border-radius:14px;padding:13px 22px;font-weight:650;text-decoration:none;font-size:16px;border:0}
.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
.btn svg{width:20px;height:20px}
.pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.pills span{font-size:13px;color:var(--mut);border:1px solid var(--line);border-radius:999px;padding:5px 12px;background:color-mix(in srgb,var(--card) 70%,transparent)}
.note{font-size:13px;color:var(--mut);margin-top:14px}
.art{position:relative;aspect-ratio:1/1;border-radius:34px;overflow:hidden;box-shadow:0 40px 90px -30px color-mix(in srgb,var(--a) 80%,transparent),0 0 0 1px var(--line);background:linear-gradient(135deg,var(--a),var(--b))}
.art img{width:100%;height:100%;object-fit:cover;display:block}
section{padding:64px 0}h2{font-size:clamp(28px,4vw,40px);letter-spacing:-.03em;line-height:1.1;margin:0 0 30px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:24px}
.card .n{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,var(--a),var(--b));color:#fff;font-weight:700;font-size:15px;margin-bottom:14px}
.card h3{margin:0 0 6px;font-size:19px;letter-spacing:-.01em}.card p{margin:0;color:var(--mut);font-size:15.5px}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.step{position:relative;padding:26px 24px 24px;border-radius:22px;border:1px dashed var(--line)}
.step:before{counter-increment:s;content:counter(s);position:absolute;top:-16px;left:20px;width:32px;height:32px;border-radius:50%;background:var(--a);color:#fff;display:grid;place-items:center;font-weight:700}
.step h3{margin:0 0 4px;font-size:18px}.step p{margin:0;color:var(--mut);font-size:15.5px}
.band{background:linear-gradient(135deg,color-mix(in srgb,var(--a) 16%,var(--card)),color-mix(in srgb,var(--b) 12%,var(--card)));border:1px solid var(--line);border-radius:30px;padding:38px}
.band ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px 28px}
.band li{padding-left:28px;position:relative;font-size:16px}.band li:before{content:"";position:absolute;left:0;top:8px;width:12px;height:12px;border-radius:4px;background:linear-gradient(135deg,var(--a),var(--b))}
details{border-bottom:1px solid var(--line);padding:18px 0}summary{cursor:pointer;font-weight:650;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--mut);font-size:22px;line-height:1}details[open] summary:after{content:"–"}
details p{color:var(--mut);margin:10px 0 0}
.cta{text-align:center}.cta h2{margin-bottom:22px}.cta .badges{justify-content:center}
footer{border-top:1px solid var(--line);padding:32px 0 44px;color:var(--mut);font-size:14.5px}
footer .wrap{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center}footer .sig{margin-left:auto}footer a{text-decoration:none}footer a:hover{color:var(--fg)}
.doc{max-width:760px;margin:0 auto;padding:44px 22px 70px}.doc h1{font-size:clamp(32px,5vw,46px);margin:10px 0 8px}.doc h2{font-size:22px;margin:34px 0 8px;letter-spacing:-.01em}
.doc p,.doc li{color:var(--mut)}.doc strong{color:var(--fg)}.doc .meta{font-size:14px}
@media(max-width:820px){.hero{padding:40px 0 48px}.hero .wrap{grid-template-columns:1fr;gap:34px}.art{max-width:420px;order:-1;aspect-ratio:4/3}.icon{width:84px;height:84px;border-radius:20px}footer .sig{margin-left:0}}
@media(prefers-reduced-motion:no-preference){.card,.btn{transition:transform .25s,box-shadow .25s}.card:hover{transform:translateY(-3px)}.btn:hover{transform:translateY(-2px)}}