:root{--bg:#fff;--ink:#0c0c0c;--muted:#666;--card:#f7f7f7}
*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}.container{max-width:1100px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid #eee;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;padding:12px 0}.logo{display:flex;align-items:center;gap:10px}
.logo img{height:42px}.logo span{font-weight:800;letter-spacing:.08em}
.menu-toggle{display:none;font-size:28px;cursor:pointer}nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0}
@media(max-width:800px){nav ul{display:none}.menu-toggle{display:block}nav.open ul{display:flex;flex-direction:column;position:absolute;right:20px;top:66px;background:#fff;border:1px solid #eee;border-radius:12px;padding:14px 16px;gap:12px;box-shadow:0 12px 30px rgba(0,0,0,.06)}}
.hero{position:relative;padding:96px 0 72px;border-bottom:1px solid #eee;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-40px;-webkit-mask:url('assets/hero_watermark.png') center/contain no-repeat;mask:url('assets/hero_watermark.png') center/contain no-repeat;background:radial-gradient(circle at center, rgba(0,0,0,.06), rgba(0,0,0,0));opacity:.35;pointer-events:none}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.hero h1{font-size:40px;line-height:1.08;margin:0 0 10px}.hero p{color:var(--muted);font-size:18px}
.btn{display:inline-block;padding:12px 16px;border-radius:10px;border:1px solid #111;font-weight:700}.btn.primary{background:#111;color:#fff}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}}
section{padding:72px 0}.section-title{font-size:30px;margin:0 0 8px}.section-sub{color:var(--muted);margin:0 0 28px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:var(--card);border:1px solid #e8e8e8;border-radius:14px;overflow:hidden}.card-body{padding:16px}.card h3{margin:0 0 6px}
@media(max-width:950px){.cards{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.cards{grid-template-columns:1fr}}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.grid figure{margin:0}.grid img{border-radius:12px;border:1px solid #eaeaea}.grid figcaption{padding:8px 4px 0;color:#333}
@media(max-width:720px){.grid{grid-template-columns:1fr}}
.notice{background:#111;color:#fff;border-radius:14px;padding:18px 18px}.notice p{margin:10px 0}
footer{position:relative;padding:44px 0;border-top:1px solid #eee;color:#444;background:#fff;overflow:hidden}
footer::before{content:"";position:absolute;inset:-40px;-webkit-mask:url('assets/hero_watermark.png') center/contain no-repeat;mask:url('assets/hero_watermark.png') center/contain no-repeat;background:radial-gradient(circle at center, rgba(0,0,0,.05), rgba(0,0,0,0));opacity:.22;pointer-events:none}
footer .cols{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:10px}.tagline{color:#222;font-weight:700}.small{color:#6b6b6b}