:root{--bg:#ffffff;--soft:#f6f6f7;--ink:#141416;--muted:#5d6068;--line:#e6e6ea;--red:#d9232d;--card:#ffffff;
--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#111114;--soft:#18181c;--ink:#ececef;--muted:#a3a5ad;--line:#2a2a30;--red:#ff4a52;--card:#18181c}}
:root[data-theme="dark"]{--bg:#111114;--soft:#18181c;--ink:#ececef;--muted:#a3a5ad;--line:#2a2a30;--red:#ff4a52;--card:#18181c}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--sans)}
a{color:var(--red);text-underline-offset:3px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
.logo{display:inline-block;background:#fff;border-radius:10px;padding:6px 10px;line-height:0}
.logo img{height:38px;width:auto}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:15px;font-weight:500}nav a:hover,nav a[aria-current]{color:var(--ink)}
.hero{position:relative;color:#fff;background:#0b0b0d url(img/hero.jpg) center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,10,12,.88),rgba(10,10,12,.45))}
.hero .wrap{position:relative;padding:110px 20px 100px}
.kicker{font:600 13px var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--red);margin:0 0 14px}
.hero .kicker{color:#ff6a70}
h1{font:700 clamp(34px,5.4vw,58px)/1.08 var(--sans);letter-spacing:-.02em;margin:0 0 20px;max-width:820px}
.lead{font-size:20px;max-width:720px;margin:0 0 30px;opacity:.92}
.btn{display:inline-block;padding:13px 24px;border-radius:999px;background:var(--red);color:#fff;text-decoration:none;font-weight:600}
.btn.ghost{background:transparent;border:1.5px solid rgba(255,255,255,.6);margin-left:10px}
section{padding:70px 0;border-bottom:1px solid var(--line)}
section.soft{background:var(--soft)}
h2{font:700 32px/1.2 var(--sans);letter-spacing:-.01em;margin:0 0 14px}h3{font-size:19px;margin:0 0 8px}
.muted{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
@media(max-width:860px){.grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.grid{grid-template-columns:1fr}.btn.ghost{margin:10px 0 0}}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}
.card p{margin:0;color:var(--muted)}
.card .dot{display:block;width:10px;height:10px;border-radius:50%;background:var(--red);margin-bottom:14px}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}@media(max-width:860px){.split{grid-template-columns:1fr}}
.split img{width:100%;border-radius:16px;display:block}
.notice{border-left:4px solid var(--red);background:var(--card);border-radius:12px;padding:22px 24px}
.doc{padding:60px 0}.doc p{max-width:760px}
footer{padding:36px 0 48px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.theme-toggle{position:fixed;right:18px;bottom:18px;z-index:50;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,.15)}
.theme-toggle svg{width:20px;height:20px}