/* Gate · 跨境门户 · 样式 */
:root {
  --bg: #0f1923; --bg-card: #1a2d3d; --bg-hover: #243848;
  --text: #c8d6e5; --text-dim: #607d8b; --text-bright: #e8f0f8;
  --primary: #0d7377; --primary-hover: #0a5c60;
  --accent: #f47920; --border: #2a4a5e;
  --green: #16a34a; --amber: #f59e0b;
  --radius: 8px;
}

* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif; background: var(--bg); color: var(--text); line-height:1.6; }
.container { max-width:1200px; margin:0 auto; padding:0 20px; }
a { color: var(--primary); text-decoration:none; }
a:hover { color: var(--primary-hover); }

/* Header */
.site-header { background: var(--bg-card); border-bottom:1px solid var(--border); padding:12px 0; position:sticky; top:0; z-index:100; }
.site-header .container { display:flex; align-items:center; gap:24px; flex-wrap:wrap; }
.logo { font-size:20px; font-weight:700; color:var(--text-bright); white-space:nowrap; }
.main-nav { display:flex; gap:4px; flex-wrap:wrap; }
.main-nav a { color:var(--text-dim); padding:6px 12px; border-radius:6px; font-size:14px; transition:.2s; min-height:44px; display:inline-flex; align-items:center; }
.main-nav a:hover, .main-nav a.active { color:var(--text-bright); background:var(--bg-hover); }
.header-actions { display:flex; align-items:center; gap:12px; margin-left:auto; flex-wrap:wrap; }
.lang-switch a { font-size:13px; padding:2px 6px; border-radius:4px; color:var(--text-dim); }
.lang-switch a.active { color:var(--primary); font-weight:600; }
.project-links { display:flex; gap:4px; }
.project-links a { font-size:11px; padding:2px 8px; border-radius:4px; background:var(--bg-hover); color:var(--text-dim); }

/* Hamburger toggle -- hidden on desktop */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  color: var(--text-bright);
  font-size: 20px;
  line-height: 1;
}

/* Buttons */
.btn { display:inline-block; padding:8px 18px; border-radius:var(--radius); font-size:14px; cursor:pointer; border:none; transition:.2s; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-hover); color:#fff; }
.btn-secondary { background:var(--accent); color:#fff; }
.btn-lg { padding:12px 28px; font-size:16px; }
.btn-sm { padding:4px 12px; font-size:12px; }

/* Hero */
.hero-gate { background: linear-gradient(135deg, #0f1923 0%, #132a3a 50%, #0f2a28 100%); padding:80px 0; text-align:center; }
.hero-gate h1 { font-size:36px; color:var(--text-bright); margin-bottom:12px; }
.hero-gate p { font-size:17px; color:var(--text-dim); margin-bottom:24px; }
.hero-actions { display:flex; gap:12px; justify-content:center; }
.hero { background: linear-gradient(135deg, #0f1923 0%, #132a3a 50%, #0f2a28 100%); padding:80px 20px; text-align:center; }
.hero h1 { font-size:36px; color:var(--text-bright); margin-bottom:20px; }
.hero p { font-size:17px; color:var(--text-dim); margin-bottom:32px; }
.hero-search { display:flex; gap:12px; max-width:600px; margin:0 auto 40px; }
.hero-search input { flex:1; padding:14px 18px; border-radius:var(--radius); border:1px solid var(--border); background:var(--bg-card); color:var(--text); font-size:15px; }
.hero-search .btn { padding:14px 24px; font-size:15px; white-space:nowrap; }
.hero-stats { display:flex; gap:40px; justify-content:center; flex-wrap:wrap; }
.hero-stats .stat { text-align:center; padding:8px 12px; }
.hero-stats .stat strong { display:block; font-size:28px; color:var(--primary); margin-bottom:4px; }

/* Stats */
.stats-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(180px,1fr)); gap:16px; }
.stat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.stat-card { background:var(--bg-hover); border:1px solid var(--border); border-radius:var(--radius); padding:24px; text-align:center; }
.stat-card strong { display:block; font-size:15px; margin:8px 0 6px; }
.stat-card span { font-size:13px; color:var(--text-dim); }
@media (max-width:768px) { .stat-grid { grid-template-columns:repeat(2,1fr); } }

/* Supply Chain */
.chain-visual { display:flex; align-items:center; justify-content:center; gap:12px; flex-wrap:wrap; padding:32px 0; }
.chain-node { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); padding:16px 24px; font-weight:600; color:var(--text-bright); }
.chain-arrow { color:var(--primary); font-size:20px; font-weight:700; }
.chain-desc { text-align:center; color:var(--text-dim); }

/* Factory Search */
.factory-search { display:flex; gap:8px; max-width:600px; margin:0 auto 24px; }
.factory-search input { flex:1; padding:10px 14px; border-radius:var(--radius); border:1px solid var(--border); background:var(--bg-card); color:var(--text); font-size:14px; }

/* Guide Cards */
.card-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(260px,1fr)); gap:16px; }
.guide-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); padding:24px; }
.guide-card h3 { color:var(--primary); font-size:16px; margin-bottom:8px; }
.guide-card p { color:var(--text-dim); font-size:13px; margin-bottom:12px; }

/* Factory Grid */
.factory-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(260px,1fr)); gap:16px; }
.factory-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); padding:20px; transition:.2s; display:block; }
.factory-card:hover { border-color:var(--primary); }
.factory-card h4 { color:var(--text-bright); font-size:16px; margin-bottom:4px; }

/* Product Grid */
.product-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(260px,1fr)); gap:16px; }
.product-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); padding:16px; transition:.2s; }
.product-card:hover { border-color:var(--primary); }
.product-info h4 { color:var(--text-bright); font-size:15px; margin:0 0 6px; }
.product-cat { display:inline-block; font-size:12px; color:var(--text-dim); margin-right:8px; }
.product-price { display:inline-block; font-size:12px; color:var(--accent); font-weight:600; margin-right:8px; }
.product-moq { display:inline-block; font-size:12px; color:var(--text-dim); }
.rating { font-size:11px; padding:2px 8px; border-radius:4px; }
.rating-a { background:#1a4a1a; color:#4caf50; }
.rating-b { background:#1a3a4a; color:#2196f3; }
.rating-c { background:#3a2a1a; color:#ff9800; }

/* Sections */
section { padding:60px 0; }
section h2 { font-size:24px; color:var(--text-bright); margin-bottom:24px; text-align:center; }

/* Filters */
.filters { display:flex; gap:16px; margin-bottom:28px; justify-content:center; flex-wrap:wrap; padding:16px 20px; background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); }
.filters select, .filters input { padding:12px 18px; border-radius:var(--radius); border:1px solid var(--border); background:var(--bg); color:var(--text); font-size:14px; min-height:44px; }
.filters select { min-width:160px; cursor:pointer; }
.filters input { min-width:240px; }
.filters select:focus, .filters input:focus { border-color:var(--primary); outline:none; }

/* Forms */
input, select, textarea { width:100%; padding:10px 14px; border-radius:var(--radius); border:1px solid var(--border); background:var(--bg-card); color:var(--text); font-size:14px; font-family:inherit; }
input:focus, select:focus, textarea:focus { outline:none; border-color:var(--primary); }

/* Footer */
.site-footer { background:var(--bg-card); border-top:1px solid var(--border); padding:40px 0 20px; margin-top:60px; }
.footer-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px,1fr)); gap:24px; }
.footer-col h4 { color:var(--text-bright); font-size:14px; margin-bottom:12px; }
.footer-col a, .footer-col p { display:block; color:var(--text-dim); font-size:13px; margin-bottom:6px; }
.footer-bottom { margin-top:24px; padding-top:16px; border-top:1px solid var(--border); text-align:center; font-size:12px; color:var(--text-dim); }

/* Admin */
.admin-login { display:flex; justify-content:center; align-items:center; min-height:100vh; }
.admin-login form { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); padding:32px; width:360px; }
.admin-layout { display:flex; min-height:100vh; }
.admin-sidebar { width:220px; background:var(--bg-card); border-right:1px solid var(--border); padding:20px; }
.admin-sidebar h3 { color:var(--primary); margin-bottom:16px; }
.admin-sidebar a { display:block; padding:8px 12px; border-radius:4px; color:var(--text-dim); font-size:14px; margin-bottom:4px; }
.admin-sidebar a:hover { background:var(--bg-hover); color:var(--text-bright); }
.admin-main { flex:1; padding:32px; }
.admin-table { width:100%; border-collapse:collapse; }
.admin-table th, .admin-table td { padding:8px 12px; text-align:left; border-bottom:1px solid var(--border); font-size:13px; }
.admin-table th { color:var(--text-dim); font-weight:600; }

.empty-state { grid-column:1/-1; text-align:center; padding:40px; color:var(--text-dim); }
.success-msg { background:#1a3a2a; border:1px solid #2a5a3a; color:#4caf50; padding:12px 20px; border-radius:var(--radius); margin-top:16px; }
.error-msg { background:#3a1a1a; border:1px solid #5a2a2a; color:#f44336; padding:12px 20px; border-radius:var(--radius); margin-top:16px; }

/* ====== Responsive: 1024px ====== */
@media (max-width: 1024px) {
  .container { padding: 0 16px; }
  .site-header .container { gap: 16px; }
  .main-nav a { padding: 6px 8px; font-size: 13px; }
}

/* ====== Responsive: 768px ====== */
@media (max-width: 768px) {
  .site-header .container { gap: 8px; }
  .nav-toggle { display: block; order: -1; }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding: 8px 0 4px;
    border-top: 1px solid var(--border);
    margin-top: 8px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; font-size: 15px; min-height: 44px; border-radius: 6px; }
  .header-actions { gap: 4px; }
  .header-actions .btn-primary { padding: 6px 12px; font-size: 12px; }
  .project-links { display: none; }

  .hero-gate { padding: 48px 0 40px; }
  .hero-gate h1 { font-size: 24px; }
  .hero-gate p { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 24px; line-height: 1.3; }
  .hero p { font-size: 15px; }
  .hero-search { flex-direction: column; }
  .hero-search input { min-height: 48px; }
  .hero-search .btn { min-height: 48px; }
  .hero-stats { gap: 16px; }
  .hero-stats .stat strong { font-size: 22px; }

  .filters { flex-direction: column; gap:12px; padding:14px 16px; }
  .filters select, .filters input { min-width:100%; }

  section { padding: 40px 0; }
  section h2 { font-size: 20px; }

  .factory-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { gap: 20px; }

  .chain-visual { flex-direction: column; gap: 8px; }
  .chain-arrow { transform: rotate(90deg); }

  .factory-search { flex-direction: column; }

  [style*="grid-template-columns: repeat(3"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="grid-template-columns: repeat(4"] { grid-template-columns: repeat(2, 1fr) !important; }
  [style*="grid-template-columns:1fr 1fr"],
  [style*="grid-template-columns: 1fr 1fr"] { grid-template-columns: 1fr !important; }
}

/* ====== Responsive: 480px ====== */
@media (max-width: 480px) {
  .container { padding: 0 12px; }
  .logo { font-size: 16px; }
  .header-actions { gap: 4px; }

  .hero-gate { padding: 32px 0 28px; }
  .hero-gate h1 { font-size: 20px; }
  .hero-gate p { font-size: 14px; }
  .hero { padding: 32px 0 28px; }
  .hero h1 { font-size: 20px; }
  .hero p { font-size: 14px; }
  .hero-stats { flex-direction: column; gap: 12px; }
  .hero-stats .stat strong { font-size: 20px; }

  section { padding: 32px 0; }
  section h2 { font-size: 18px; }

  .factory-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }

  [style*="grid-template-columns: repeat(3"],
  [style*="grid-template-columns: repeat(4"] { grid-template-columns: 1fr !important; }
}