:root{--bg:#f6f7f8;--text:#101923;--muted:#5d6b7a;--line:#d9e0e8;--blue:#174a78;--blue2:#255f99;--dark:#0d1723;--accent:#b23b3b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.62}a{color:var(--blue2);text-decoration:none}a:hover{text-decoration:underline}header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.topbar{max-width:1180px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}.brand{font-weight:850;letter-spacing:-.02em;color:var(--text)}.nav{display:flex;gap:14px;flex-wrap:wrap;font-size:.86rem}.page{max-width:1060px;margin:0 auto;padding:38px 24px 82px}.hero{background:radial-gradient(circle at 82% 18%,rgba(157,189,255,.22),transparent 27%),linear-gradient(135deg,#06101b,#18395a 68%,#07111d);color:white;border-radius:26px;padding:52px 46px;margin-bottom:36px;box-shadow:0 18px 55px rgba(13,23,35,.16)}.kicker{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:#bdd6ee;font-weight:850;margin-bottom:13px}.hero h1{font-size:clamp(2.35rem,5.4vw,4.7rem);line-height:.95;margin:0 0 18px;letter-spacing:-.065em}.hero p{color:#e3edf7;max-width:900px;font-size:1.05rem}.section{padding:72px 0;border-bottom:1px solid var(--line)}.section:last-child{border-bottom:0}.section h2{font-size:clamp(1.75rem,3.2vw,2.7rem);line-height:1.08;letter-spacing:-.05em;margin:0 0 16px;max-width:820px}.lead{color:var(--muted);max-width:900px;font-size:1.04rem}.notice{border-left:3px solid var(--accent);padding-left:20px;margin-top:22px;color:var(--muted);max-width:900px}.meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;margin-top:30px}.meta-item{border-top:2px solid var(--line);padding-top:16px}.meta-label{font-size:.72rem;letter-spacing:.11em;text-transform:uppercase;color:var(--blue);font-weight:850;margin-bottom:7px}.meta-value{font-weight:850}.actions{display:flex;gap:12px 20px;flex-wrap:wrap;margin-top:24px}.actions a{font-weight:850}.challenge{background:#0d1723;color:white;border-radius:26px;padding:36px;border-bottom:0}.challenge p{color:#d8e4ef}.challenge a{color:white;font-weight:850}footer{text-align:center;padding:26px;color:var(--muted);border-top:1px solid var(--line);background:#fff}@media(max-width:900px){.hero{padding:32px 26px}.page{padding:22px 16px 60px}.nav{font-size:.82rem}.meta{grid-template-columns:1fr}}