:root{--bg: #0b1220;--panel: #121a2b;--text: #e8edf7;--muted: #a8b2c7;--brand: #7c5cff;--ok: #2ecc71;--ng: #ff5c7c;--shadow: 0 10px 24px rgba(0, 0, 0, .35);color-scheme:dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,Hiragino Sans,Noto Sans JP,sans-serif;line-height:1.4;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%}body{background:radial-gradient(800px 500px at 20% -10%,rgba(124,92,255,.35),transparent 55%),radial-gradient(700px 500px at 100% 10%,rgba(46,204,113,.18),transparent 55%),var(--bg);color:var(--text);min-height:100vh;min-height:100dvh}a{color:inherit}button,input,select{font-family:inherit}.app{padding-top:48px;padding-bottom:76px;max-width:560px;margin:0 auto}.app-back{display:block;padding:10px 14px 0;color:var(--muted);text-decoration:none;font-size:13px}.topbar{padding:10px 14px 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0;width:170px;height:120px;position:relative;cursor:pointer}.pack-top{position:absolute;left:0;right:0;top:0;height:34px;background:#ffffff24;border:1px solid rgba(255,255,255,.16);border-bottom:0;border-radius:14px 14px 10px 10px}.pack-body{position:absolute;left:0;right:0;bottom:0;height:90px;background:#7c5cff26;border:1px solid rgba(124,92,255,.3);border-radius:10px 10px 14px 14px}.pack-shine{position:absolute;inset:-10px;background:radial-gradient(80px 60px at 30% 30%,rgba(255,255,255,.25),transparent 60%);opacity:.8;pointer-events:none}.pack-opening{animation:pack-pop .65s ease both}@keyframes pack-pop{0%{transform:scale(.96) rotate(-1deg);filter:brightness(.9)}55%{transform:scale(1.03) rotate(1deg);filter:brightness(1.2)}to{transform:scale(1);filter:brightness(1)}}.card-reveal{margin-top:12px;border:2px solid rgba(255,255,255,.18);border-radius:14px;padding:12px;background:#ffffff0a}.rarity-badge{display:inline-block;color:#0b1220;font-weight:900;border-radius:999px;padding:4px 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