:root{--bg:#fbfefe;--surface:#fff;--mint:#e9f7f0;--text:#0b2b2e;--muted:#42605d;--dim:#7c9895;--hairline:#d2f1ee;--line:#b7d6d1;--teal:#106770;--teal-h:#0b535b;--deep:#0b2b2e;--lime:#bde800;--on-deep:#eafaf6;--on-deep-mut:#93b6b1;--grad:linear-gradient(135deg,#bde800,#106770);--font:'Inter','Segoe UI',system-ui,sans-serif;--title:'Sora','Inter',system-ui,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--teal)}a:hover{color:var(--teal-h)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}.narrow{max-width:780px}
header.top{position:sticky;top:0;z-index:10;background:rgba(251,254,254,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--hairline)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{font:700 26px/1 var(--title);color:var(--deep);text-decoration:none;letter-spacing:-.02em}.logo b{color:var(--teal)}
.logo small{font:600 12px var(--font);color:var(--dim);margin-left:8px;letter-spacing:.06em;text-transform:uppercase}
nav.links{display:flex;align-items:center;gap:22px;font-size:14px}nav.links a{color:var(--muted);text-decoration:none}nav.links a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;font:600 15px var(--font);text-decoration:none;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--deep);color:var(--on-deep)}.btn-primary:hover{background:var(--teal);color:#fff}
.btn-ghost{border-color:var(--line);color:var(--text);background:var(--surface)}.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
nav.links .btn{color:var(--on-deep);padding:8px 16px;font-size:14px}
@media(max-width:720px){nav.links a:not(.btn){display:none}}
.hero{padding:88px 0 72px}
.kicker{display:inline-block;font:600 13px var(--font);letter-spacing:.08em;text-transform:uppercase;color:var(--teal);background:var(--mint);padding:6px 12px;border-radius:999px;margin-bottom:22px}
h1{font:700 clamp(34px,5.4vw,58px)/1.08 var(--title);letter-spacing:-.03em;max-width:880px}
h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(17px,2vw,20px);color:var(--muted);max-width:680px;margin:22px 0 32px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
section{padding:64px 0}
h2{font:700 clamp(26px,3.4vw,36px)/1.15 var(--title);letter-spacing:-.02em;margin-bottom:14px}
.sub{color:var(--muted);max-width:640px;margin-bottom:36px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid var(--hairline);border-radius:20px;padding:26px}
.card .ic{width:42px;height:42px;border-radius:12px;background:var(--mint);display:grid;place-items:center;margin-bottom:16px;font-size:20px}
.card h3{font:600 18px/1.3 var(--title);margin-bottom:8px}.card p{color:var(--muted);font-size:15px}
.deep{background:var(--deep);color:var(--on-deep);border-radius:28px;padding:48px clamp(22px,4vw,56px)}
.deep h2{color:#fff}.deep .sub{color:var(--on-deep-mut)}
.deep ul{list-style:none;display:grid;gap:14px}.deep li{display:flex;gap:12px;align-items:flex-start;color:var(--on-deep)}
.deep li::before{content:"";flex:0 0 8px;height:8px;border-radius:50%;background:var(--lime);margin-top:9px}
.deep a{color:var(--lime)}
.deep .note{margin-top:26px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);color:var(--on-deep-mut);font-size:14px}
.doc{padding:56px 0 80px}.doc h1{font-size:clamp(30px,4.4vw,44px);margin-bottom:12px}
.doc .meta{color:var(--dim);font-size:14px;margin-bottom:28px}
.doc .toc{background:var(--surface);border:1px solid var(--hairline);border-radius:16px;padding:20px 24px;margin:28px 0 40px}
.doc .toc strong{display:block;font:600 14px var(--title);margin-bottom:8px}
.doc .toc ol{padding-left:20px;columns:2;column-gap:28px;font-size:14px}
@media(max-width:640px){.doc .toc ol{columns:1}}
.doc h2{font-size:22px;margin:40px 0 12px;scroll-margin-top:84px}.doc h3{font:600 17px var(--title);margin:22px 0 8px}
.doc p,.doc li{color:#1f3f42}.doc p{margin-bottom:12px}.doc ul{padding-left:22px;margin-bottom:12px}.doc li{margin-bottom:6px}
.callout{background:var(--mint);border-left:4px solid var(--teal);border-radius:12px;padding:18px 20px;margin:18px 0}.callout p:last-child{margin-bottom:0}
footer{border-top:1px solid var(--hairline);padding:34px 0;color:var(--dim);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px}
footer a{color:var(--muted);text-decoration:none;margin-left:18px}footer a:first-child{margin-left:0}footer a:hover{color:var(--teal)}