:root{--ink:#1d2433;--muted:#5b6578;--brand:#2f6fed;--bg:#f7f8fb;--card:#fff;--line:#e3e7ef;--warn:#fff4d6}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}a{color:var(--brand)}.wrap{max-width:1000px;margin:0 auto;padding:0 20px}header.top{background:#fff;border-bottom:1px solid var(--line)}header.top .wrap{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;flex-wrap:wrap;gap:10px}.logo{font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--ink)}.logo span{color:var(--brand)}nav a{margin-left:16px;text-decoration:none;color:var(--muted)}.hero{padding:56px 0 32px;text-align:center}.hero h1{font-size:2.4rem;margin:0 0 10px}.hero p{color:var(--muted);font-size:1.15rem}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));grid-gap:16px;gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;text-decoration:none;color:inherit;display:block}.card:hover{border-color:var(--brand)}.card h3{margin:0 0 6px}.card p{margin:0;color:var(--muted)}.tag{display:inline-block;font-size:.75rem;background:#e8efff;color:var(--brand);border-radius:99px;padding:2px 10px;margin-bottom:8px}.signup{background:#fff;border:2px dashed var(--brand);border-radius:12px;padding:24px;margin:32px 0;text-align:center}section{margin:36px 0}article{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px;margin:28px 0}article table{border-collapse:collapse;width:100%}article td,article th{border:1px solid var(--line);padding:8px;text-align:left}.note{background:var(--warn);border-radius:8px;padding:10px 14px;font-size:.92rem}.aff{background:#ffe3e3;border:1px dashed #d33;padding:2px 6px;border-radius:4px}footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:.9rem;margin-top:40px}footer a{margin-right:14px}.hero-art{max-width:640px;margin:0 auto 18px;border-radius:20px}.cat-art,.hero-art{display:block;width:100%;height:auto}.cat-art{border-radius:10px;margin-bottom:10px}.wave-art{display:block;width:160px;height:auto;margin:0 auto 6px;border-radius:16px}