:root{--bg:#f5f6f8;--card:#fff;--text:#1f2937;--muted:#6b7280;--line:#e5e7eb;--accent:#2563eb;--dark:#111827}
.steel-database-page *{box-sizing:border-box}.steel-database-page{font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;text-align:left;width:100%;border-radius:18px}
.steel-header{background:var(--dark);color:#fff;padding:34px 16px;text-align:center;border-radius:18px;margin-bottom:18px}.steel-header h1{margin:0;font-size:clamp(2rem,4vw,3.4rem)}.steel-header p{max-width:950px;margin:12px auto 0;color:#d1d5db}
.steel-topbar{position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(0,0,0,.06);padding:12px 16px}
.steel-wrap{max-width:1250px;margin:auto}.tools{display:grid;grid-template-columns:2fr 1fr 1fr;gap:10px}.tools input,.tools select{padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:1rem}
.az{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-top:12px}.az a{padding:5px 9px;border:1px solid var(--line);border-radius:999px;text-decoration:none;color:#111827;background:#fff;font-weight:bold}.az a:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.steel-main{max-width:1250px;margin:28px auto;padding:0 16px}.notice,.steel-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:18px;box-shadow:0 10px 30px rgba(0,0,0,.04)}
.notice h2,.steel-card h2{margin-top:0}.steel-card h2{font-size:1.75rem;border-bottom:1px solid var(--line);padding-bottom:8px}
.badge{display:inline-block;background:#eef2ff;color:#3730a3;border:1px solid #c7d2fe;border-radius:999px;padding:3px 9px;font-size:.86rem;margin-left:8px}
.meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;margin:14px 0}.meta div{background:#f9fafb;border:1px solid var(--line);border-radius:12px;padding:10px}.meta strong{display:block;color:#111827}
.grid{display:grid;grid-template-columns:1.3fr 1fr;gap:18px}.table{width:100%;border-collapse:collapse;margin:10px 0}.table th,.table td{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}.table th{background:#f9fafb}
.props{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:12px 0}.prop{border:1px solid var(--line);border-radius:12px;padding:10px;background:#fbfdff}.prop strong{display:block;font-size:.9rem;color:#4b5563}.prop span{font-weight:bold;color:#111827}
.backtop{display:inline-block;margin-top:10px;color:var(--accent);text-decoration:none}.footer{text-align:center;color:var(--muted);padding:36px 16px}.hidden{display:none!important}
@media(max-width:800px){.tools,.grid{grid-template-columns:1fr}.steel-topbar{position:static}.steel-card{padding:16px}}

.steel-database-page .notice,
.steel-database-page .steel-card,
.steel-database-page table,
.steel-database-page p,
.steel-database-page h2,
.steel-database-page h3 { text-align:left; }

.steel-database-page .steel-header h1,
.steel-database-page .steel-header p { text-align:center; }

.content .steel-database-page { width:100%; }