:root{--bg:#0b0a1a;--bg-2:#14122b;--card:#1b1838;--line:rgba(196,181,253,0.16);--text:#ece9ff;--dim:#a9a3cf;--accent:#c4b5fd;--gold:#f5d78e;--easy:#86efac;--normal:#fcd34d;--hard:#fca5a5}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:radial-gradient(1200px 600px at 70% -10%,#2a2160 0,transparent 60%),var(--bg);color:var(--text);font-family:Pretendard,Apple SD Gothic Neo,Malgun Gothic,system-ui,sans-serif;line-height:1.6;min-height:100vh}a{color:inherit;text-decoration:none}.wrap{max-width:1080px;margin:0 auto;padding:0 20px}header.site{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);position:-webkit-sticky;position:sticky;top:0;background:rgba(11,10,26,.7);z-index:10}header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}.brand{font-weight:800;letter-spacing:.04em}.brand span{color:var(--gold)}nav a{margin-left:22px;color:var(--dim)}nav a:hover{color:var(--text)}.hero{padding:88px 0 56px}.hero h1{font-size:clamp(34px,6vw,56px);margin:0 0 12px;line-height:1.15}.hero p{color:var(--dim);font-size:18px;max-width:620px}.btn{display:inline-block;margin-top:24px;padding:12px 22px;border-radius:10px;background:var(--accent);color:#1b1838;font-weight:700}.section-title{font-size:22px;margin:48px 0 16px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));grid-gap:14px;gap:14px}.card{background:linear-gradient(180deg,var(--card),var(--bg-2));border:1px solid var(--line);border-radius:14px;padding:18px;transition:transform .15s ease,border-color .15s ease;display:block}.card:hover{transform:translateY(-2px);border-color:rgba(196,181,253,.4)}.card h3{margin:6px 0;font-size:18px}.card p{margin:0;color:var(--dim);font-size:14px}.meta{display:flex;gap:8px;flex-wrap:wrap;font-size:12px}.tag{padding:2px 8px;border-radius:999px;border:1px solid var(--line);color:var(--dim)}.tag.lv{color:var(--gold);border-color:rgba(245,215,142,.35)}.tag.easy{color:var(--easy)}.tag.normal{color:var(--normal)}.tag.hard{color:var(--hard)}.note{color:var(--dim);font-size:14px;border-left:3px solid var(--accent);padding-left:12px;margin:16px 0}footer.site{border-top:1px solid var(--line);margin-top:80px;padding:28px 0;color:var(--dim);font-size:13px}