:root{
  --bg:#f5f7fb; --card:#ffffff; --ink:#1c2333; --muted:#6b7486;
  --brand:#2f6fed; --brand-dark:#1e56c8; --line:#e6eaf2; --ok:#0f9d58; --err:#d93025;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;flex-wrap:wrap}
.brand{font-size:20px;font-weight:700;color:var(--ink);text-decoration:none}
.search{display:flex;gap:8px;flex:1;max-width:420px}
.search input{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:14px}
.search button{border:0;background:var(--brand);color:#fff;border-radius:8px;padding:8px 16px;cursor:pointer}
.search button:hover{background:var(--brand-dark)}
main.wrap{padding:24px 16px 48px}
.page-head h1{margin:0 0 4px;font-size:24px}
.muted{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-top:16px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;text-decoration:none;color:inherit;transition:.15s}
.card:hover{box-shadow:0 6px 18px rgba(28,35,51,.08);transform:translateY(-2px)}
.card-title{margin:0 0 8px;font-size:16px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0 8px}
.chip{background:#eef3ff;color:var(--brand);border-radius:999px;padding:2px 10px;font-size:12px}
.card-desc{margin:0 0 10px;color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
.pager{display:flex;gap:16px;justify-content:center;align-items:center;margin-top:24px}
.pager a{color:var(--brand);text-decoration:none}
.empty{text-align:center;color:var(--muted);padding:60px 0}
.empty h1{font-size:48px;margin:0 0 8px;color:var(--ink)}
.detail{max-width:820px;margin:0 auto}
.detail-title{font-size:26px;margin:0 0 12px}
.meta-row{display:flex;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:14px;margin:10px 0 18px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin:16px 0}
.panel h2{margin:0 0 10px;font-size:18px}
.prewrap{white-space:pre-wrap;word-break:break-word;font-size:15px}
.download-panel{border:2px solid #dbe6ff;background:#fbfdff}
.redeem-row{display:flex;gap:10px;margin:14px 0;flex-wrap:wrap}
.redeem-row input{flex:1;min-width:240px;border:1px solid var(--line);border-radius:8px;padding:12px 14px;font-size:16px;letter-spacing:1px;font-family:ui-monospace,Consolas,monospace;text-transform:uppercase}
.redeem-row button{border:0;background:var(--brand);color:#fff;border-radius:8px;padding:12px 22px;font-size:15px;cursor:pointer}
.redeem-row button:hover{background:var(--brand-dark)}
.redeem-row button:disabled{opacity:.6;cursor:wait}
.redeem-result{margin-top:12px;padding:14px;border-radius:10px;font-size:14px}
.redeem-result.ok{background:#eefaf1;border:1px solid #bfe6cc}
.redeem-result.err{background:#fdeceb;border:1px solid #f3c1bd;color:var(--err)}
.dl-btn{display:inline-block;margin:10px 0 4px;background:var(--ok);color:#fff;text-decoration:none;padding:10px 22px;border-radius:8px;font-size:15px}
.small{font-size:12px}
.site-footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding:18px 0;margin-top:24px;background:#fff}
.site-footer .wrap{text-align:center}