:root {
  --blue-900: #0F2A47;
  --blue-700: #14365D;
  --blue-600: #1B4B7E;
  --blue-100: #E8F0F8;
  --amber: #F59E0B;
  --amber-600: #D97706;
  --bg: #F5F7FA;
  --card: #FFFFFF;
  --line: #E2E8F0;
  --text: #1E293B;
  --muted: #64748B;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15, 42, 71, .08), 0 4px 14px rgba(15, 42, 71, .06);
  --shadow-lg: 0 6px 24px rgba(15, 42, 71, .14);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; font-size: 15px; }
a { color: var(--blue-600); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header { background: var(--blue-900); position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,.18); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand img { height: 40px; width: auto; }
.brand .brand-name { font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.brand .brand-sub { font-size: 11px; color: #9DB4CE; letter-spacing: 2px; }
.main-nav { display: flex; gap: 4px; align-items: center; }
.main-nav a { color: #CBD9E8; padding: 8px 14px; border-radius: 6px; font-weight: 500; font-size: 14px; }
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.08); text-decoration: none; }
.main-nav a.active { color: #fff; background: var(--blue-600); }
.nav-toggle { display: none; background: none; border: 1px solid rgba(255,255,255,.3); color: #fff; border-radius: 6px; padding: 6px 12px; font-size: 16px; cursor: pointer; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 55%, #1E5791 100%); color: #fff; padding: 72px 0; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: -120px; top: 50%; transform: translateY(-50%); width: 480px; height: 480px; border-radius: 50%; border: 60px solid rgba(255,255,255,.05); border-top-color: rgba(245,158,11,.25); }
.hero h1 { font-size: 40px; font-weight: 800; line-height: 1.2; margin-bottom: 14px; }
.hero p.sub { font-size: 17px; color: #C6D6E6; max-width: 620px; margin-bottom: 28px; }
.hero-search { position: relative; max-width: 560px; }
.hero-search input { width: 100%; padding: 14px 138px 14px 18px; border-radius: 8px; border: none; font-size: 16px; box-shadow: var(--shadow-lg); }
.hero-search input:focus { outline: 3px solid rgba(245,158,11,.5); }
.hero-search button { position: absolute; right: 4px; top: 4px; bottom: 4px; padding: 0 22px; border: none; border-radius: 6px; background: var(--amber); color: #3A2703; font-weight: 700; font-size: 15px; cursor: pointer; }
.hero-search button:hover { background: var(--amber-600); color: #fff; }
.hero-stats { display: flex; gap: 40px; margin-top: 36px; flex-wrap: wrap; }
.hero-stats .stat b { display: block; font-size: 26px; color: var(--amber); font-weight: 800; }
.hero-stats .stat span { font-size: 13px; color: #9DB4CE; }

/* ---------- Sections ---------- */
.section { padding: 56px 0; }
.section.alt { background: #fff; }
.section-title { text-align: center; margin-bottom: 8px; font-size: 28px; font-weight: 800; color: var(--blue-900); }
.section-sub { text-align: center; color: var(--muted); margin-bottom: 36px; font-size: 15px; }
.section-title .accent { color: var(--amber-600); }

/* 卡片网格 */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.p-card { background: var(--card); border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden; transition: transform .18s, box-shadow .18s; display: flex; flex-direction: column; }
.p-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); text-decoration: none; }
.p-card .thumb { aspect-ratio: 1; background: #F1F5F9; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.p-card .thumb img { width: 100%; height: 100%; object-fit: contain; padding: 10px; }
.p-card .body { padding: 14px 16px 16px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.p-card .code { font-weight: 700; color: var(--blue-900); font-size: 15px; word-break: break-all; line-height: 1.4; min-height: 2.8em; }
.p-card .meta { color: var(--muted); font-size: 12.5px; display: flex; gap: 6px; flex-wrap: wrap; }
.p-card .tag { background: var(--blue-100); color: var(--blue-700); border-radius: 4px; padding: 2px 8px; font-size: 11.5px; font-weight: 600; }
.p-card .oem { color: var(--muted); font-size: 12px; word-break: break-all; }
.p-card .inquiry-bar { border-top: 1px solid var(--line); margin-top: auto; padding-top: 10px; }
.p-card .inquiry-bar .btn-sm { width: 100%; justify-content: center; }

/* 分类入口卡 */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 18px; }
.cat-card { background: var(--card); border-radius: var(--radius); padding: 26px 20px; border: 1px solid var(--line); text-align: center; transition: border-color .15s, box-shadow .15s; }
.cat-card:hover { border-color: var(--amber); box-shadow: var(--shadow-lg); text-decoration: none; }
.cat-card .n { font-size: 30px; font-weight: 800; color: var(--blue-600); }
.cat-card .t { font-weight: 600; color: var(--text); margin-top: 4px; font-size: 15px; }
.cat-card .c { color: var(--muted); font-size: 12.5px; }

/* ---------- 列表工具条 ---------- */
.toolbar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 22px; }
.search-box { flex: 1; min-width: 260px; position: relative; }
.search-box input { width: 100%; padding: 11px 14px 11px 38px; border: 1px solid var(--line); border-radius: 8px; font-size: 14.5px; background: #fff; }
.search-box input:focus { outline: 2px solid rgba(27,75,126,.35); }
.search-box::before { content: "⌕"; position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: 18px; color: var(--muted); }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { padding: 7px 14px; border-radius: 20px; border: 1px solid var(--line); background: #fff; font-size: 13.5px; color: var(--muted); cursor: pointer; font-weight: 500; }
.chip:hover { border-color: var(--blue-600); color: var(--blue-600); }
.chip.active { background: var(--blue-700); border-color: var(--blue-700); color: #fff; }
.result-info { color: var(--muted); font-size: 13px; margin-bottom: 14px; }

/* 字母条 */
.alpha-bar { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 18px; }
.alpha-bar a { padding: 4px 9px; font-size: 13px; font-weight: 600; color: var(--muted); border-radius: 4px; }
.alpha-bar a:hover { background: var(--blue-100); color: var(--blue-700); text-decoration: none; }
.alpha-bar a.active { background: var(--blue-700); color: #fff; }
.brand-rows .b-row { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding: 9px 6px; border-bottom: 1px solid var(--line); }
.brand-rows .b-row a { font-weight: 600; }
.brand-rows .b-row .cnt { color: var(--muted); font-size: 12.5px; white-space: nowrap; }

/* ---------- 详情页 ---------- */
.crumbs { font-size: 13px; color: var(--muted); padding: 18px 0; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--blue-600); }
.detail-wrap { display: grid; grid-template-columns: minmax(300px, 460px) 1fr; gap: 40px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.detail-img { position: relative; }
.detail-img img.main { width: 100%; border-radius: 8px; border: 1px solid var(--line); background: #FAFBFC; }
.detail-info h1 { font-size: 24px; color: var(--blue-900); line-height: 1.35; margin-bottom: 10px; word-break: break-word; }
.detail-info .lead { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.chips-list { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.chips-list .code-chip { background: #F1F5F9; border: 1px solid var(--line); padding: 3px 10px; border-radius: 4px; font-size: 12.5px; color: var(--text); font-family: ui-monospace, Consolas, monospace; }
.kv-table { width: 100%; border-collapse: collapse; margin-bottom: 20px; font-size: 14px; }
.kv-table th { text-align: left; width: 140px; color: var(--muted); font-weight: 500; padding: 7px 10px 7px 0; vertical-align: top; }
.kv-table td { padding: 7px 0; word-break: break-word; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 26px; background: var(--amber); color: #3A2703; border-radius: 8px; font-weight: 700; font-size: 15px; border: none; cursor: pointer; }
.btn:hover { background: var(--amber-600); color: #fff; text-decoration: none; }
.btn.outline { background: #fff; color: var(--blue-700); border: 1.5px solid var(--blue-600); }
.btn.outline:hover { background: var(--blue-100); color: var(--blue-700); }
.btn-sm { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; font-size: 13px; border-radius: 6px; background: var(--blue-100); color: var(--blue-700); font-weight: 600; }
.btn-sm:hover { background: var(--blue-600); color: #fff; text-decoration: none; }
.veh-list { display: flex; flex-wrap: wrap; gap: 8px; }
.veh-list a { background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; font-size: 13px; font-weight: 500; color: var(--blue-700); }
.veh-list a:hover { border-color: var(--amber); text-decoration: none; }

/* ---------- 内容页 ---------- */
.page-content { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px; max-width: 900px; margin: 0 auto; }
.page-content h1 { font-size: 30px; color: var(--blue-900); margin-bottom: 20px; }
.page-content p { margin-bottom: 14px; color: #334155; }
.page-content h3 { margin: 26px 0 10px; color: var(--blue-900); }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin: 24px 0; }
.feature { background: var(--blue-100); border-radius: 8px; padding: 18px; }
.feature b { display: block; color: var(--blue-900); margin-bottom: 4px; }
.factory-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin: 20px 0; }
.factory-grid img { border-radius: 8px; border: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.contact-card { background: var(--bg); border-radius: 8px; padding: 22px; margin-bottom: 16px; }
.contact-card h3 { margin-bottom: 8px; color: var(--blue-900); }
.qr-strip { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 22px; }
.qr-item { text-align: center; }
.qr-item img { width: 150px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.qr-item div { margin-top: 6px; font-size: 13px; color: var(--muted); }

/* ---------- Footer ---------- */
.site-footer { background: var(--blue-900); color: #9DB4CE; margin-top: 60px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 36px; padding: 48px 0 30px; }
.footer-inner h4 { color: #fff; margin-bottom: 14px; font-size: 15px; }
.footer-inner a { color: #9DB4CE; display: block; padding: 4px 0; font-size: 14px; }
.footer-inner a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; font-size: 13px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-logo { height: 44px; margin-bottom: 14px; }

/* ---------- Admin ---------- */
.admin-login { max-width: 400px; margin: 80px auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; }
.admin-login h1 { font-size: 22px; color: var(--blue-900); margin-bottom: 6px; }
.admin-login .hint { color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.admin-login input[type=password] { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px; font-size: 15px; }
.admin-login .msg { margin-top: 12px; font-size: 13.5px; min-height: 20px; }
.admin-shell { display: none; }
.admin-top { background: var(--blue-900); color: #fff; padding: 14px 0; }
.admin-top .inner { display: flex; justify-content: space-between; align-items: center; }
.admin-body { display: grid; grid-template-columns: 240px 1fr; gap: 24px; padding: 28px 0; align-items: start; }
.admin-nav { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.admin-nav a { display: block; padding: 12px 18px; border-bottom: 1px solid var(--line); color: var(--text); font-weight: 500; }
.admin-nav a.active { background: var(--blue-100); color: var(--blue-700); font-weight: 700; border-left: 3px solid var(--blue-600); }
.admin-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.admin-panel h2 { font-size: 19px; color: var(--blue-900); margin-bottom: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.field input[type=text], .field select, .field textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; font-family: var(--font); }
.field textarea { min-height: 90px; resize: vertical; }
.field .sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th { text-align: left; padding: 10px 12px; background: var(--bg); color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .4px; }
.admin-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.admin-table tr:hover td { background: #FAFBFF; }
.admin-table img.thumb { width: 48px; height: 48px; object-fit: contain; border: 1px solid var(--line); border-radius: 4px; background: #F8FAFC; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 10px; font-size: 11.5px; font-weight: 700; }
.pill.new { background: #DCFCE7; color: #166534; }
.pill.static { background: var(--blue-100); color: var(--blue-700); }
.pill.edited { background: #FEF3C7; color: #92400E; }
.admin-actions { display: flex; gap: 8px; }
.admin-actions button { border: none; background: none; cursor: pointer; font-size: 13px; padding: 4px 8px; border-radius: 4px; }
.admin-actions .edit { color: var(--blue-600); }
.admin-actions .del { color: #DC2626; }
.admin-actions button:hover { background: #F1F5F9; }
.upload-zone { border: 2px dashed var(--line); border-radius: 8px; padding: 20px; text-align: center; color: var(--muted); font-size: 13.5px; background: #FAFBFC; cursor: pointer; }
.upload-zone.has { border-color: var(--amber); }
.upload-preview { margin-top: 10px; text-align: center; }
.upload-preview img { max-height: 200px; margin: 0 auto; border-radius: 6px; border: 1px solid var(--line); }
.brand-pick { display: flex; gap: 8px; }
.brand-pick input { flex: 1; }
.brand-items { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.brand-items .bi { display: inline-flex; align-items: center; gap: 6px; background: var(--blue-100); color: var(--blue-700); border-radius: 14px; padding: 3px 6px 3px 12px; font-size: 12.5px; font-weight: 600; }
.brand-items .bi button { border: none; background: rgba(0,0,0,.12); color: var(--blue-700); width: 18px; height: 18px; border-radius: 50%; cursor: pointer; font-size: 11px; line-height: 1; display: flex; align-items: center; justify-content: center; }

/* ---------- Language switch ---------- */
.main-nav .lang-switch { display: flex; gap: 2px; align-items: center; margin-left: 8px; padding-left: 12px; border-left: 1px solid rgba(255,255,255,.18); }
.main-nav .lang-switch a { color: #9DB4CE; background: none; padding: 6px 10px; border-radius: 6px; font-size: 12.5px; font-weight: 700; letter-spacing: .5px; }
.main-nav .lang-switch a:hover { color: #fff; background: rgba(255,255,255,.08); }
.main-nav .lang-switch a.cur { color: #3A2703; background: var(--amber); }

/* ---------- Contact map ---------- */
.contact-map { display: block; width: 100%; height: 320px; border: 1px solid var(--line); border-radius: 8px; margin-top: 10px; background: var(--blue-100); }
.map-note { margin-top: 10px; font-size: 12.5px; color: var(--muted); }

/* ---------- Arabic / RTL ---------- */
html[lang="ar"] body { font-family: "Segoe UI", Tahoma, "Noto Sans Arabic", "Noto Kufi Arabic", "Helvetica Neue", Arial, sans-serif; line-height: 1.75; }
html[lang="ar"] .p-card .code, html[lang="ar"] .code-chip { direction: ltr; unicode-bidi: isolate; }
html[lang="ar"] .alpha-bar { direction: ltr; }
html[lang="ar"] .kv-table th { text-align: right; padding: 7px 0 7px 10px; }
html[lang="ar"] .hero-search input { padding: 14px 18px 14px 138px; }
html[lang="ar"] .hero-search button { right: auto; left: 4px; }
html[lang="ar"] .search-box input { padding: 11px 38px 11px 14px; }
html[lang="ar"] .search-box::before { left: auto; right: 12px; }
html[lang="ar"] .main-nav .lang-switch { margin-left: 0; padding-left: 0; border-left: none; margin-right: 8px; padding-right: 12px; border-right: 1px solid rgba(255,255,255,.18); }
html[lang="ar"] .hero::after { right: auto; left: -120px; }

@media (max-width: 900px) {
  .detail-wrap { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .admin-body { grid-template-columns: 1fr; }
  .admin-nav { display: flex; overflow-x: auto; }
  .admin-nav a { white-space: nowrap; border-bottom: none; border-right: 1px solid var(--line); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 700px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--blue-900); flex-direction: column; padding: 10px 20px 16px; gap: 2px; }
  .main-nav.open { display: flex; }
  .main-nav .lang-switch { margin-left: 0; padding-left: 0; border-left: none; margin-top: 6px; }
  .contact-map { height: 240px; }
  .hero { padding: 48px 0; }
  .hero h1 { font-size: 28px; }
  .brand .brand-name { font-size: 17px; }
  .page-content { padding: 24px; }
  .toolbar { flex-direction: column; align-items: stretch; }
}