/* Trade · B2B独立站 · 样式 */
:root {
  --bg: #0b1620; --bg-card: #132233; --bg-hover: #1a3048;
  --text: #c8d6e5; --text-dim: #6b8299; --text-bright: #e8f0f8;
  --primary: #f47920; --primary-hover: #e06910;
  --accent: #0d7377; --border: #1e3a52;
  --green: #16a34a; --amber: #f59e0b;
  --radius: 8px; --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

* { 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); }
img { max-width:100%; height:auto; }

/* 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:8px; margin-left:auto; flex-wrap:wrap; }
.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); }

/* 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 { background: linear-gradient(135deg, #0b1620 0%, #132233 50%, #0d2a35 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; }

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

/* Category Grid */
.cat-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(130px,1fr)); gap:12px; }
.cat-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); padding:20px 12px; text-align:center; transition:.2s; display:block; }
.cat-card:hover { border-color:var(--primary); transform:translateY(-2px); }
.cat-icon { font-size:28px; display:block; margin-bottom:8px; }
.cat-name { font-size:14px; font-weight:600; color:var(--text-bright); display:block; }
.cat-en { font-size:11px; color:var(--text-dim); }

/* Advantage Grid */
.advantage-grid, .stats-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(250px,1fr)); gap:16px; }
.adv-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); padding:24px; }
.adv-card h3 { color:var(--primary); font-size:16px; margin-bottom:8px; }
.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 16px; text-align:center; transition:.2s; }
.stat-card:hover { border-color:var(--primary); transform:translateY(-2px); }
.stat-card strong { display:block; font-size:15px; margin:8px 0 6px; }
@media (max-width:768px) { .stat-grid { grid-template-columns:repeat(2,1fr); } }

/* Product/Factory Grid */
.product-grid, .factory-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(260px,1fr)); gap:16px; }
.product-card, .factory-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; transition:.2s; display:block; }
.product-card:hover, .factory-card:hover { border-color:var(--primary); }
.product-img { height:180px; background:var(--bg-hover); display:flex; align-items:center; justify-content:center; }
.product-info { padding:16px; }
.product-info h4 { color:var(--text-bright); font-size:15px; margin-bottom:4px; }
.product-cat, .product-price, .product-moq { display:inline-block; font-size:12px; color:var(--text-dim); margin-right:8px; }
.product-price { color:var(--primary); font-weight:600; }
.factory-card { padding:20px; }
.factory-card h4 { color:var(--text-bright); font-size:16px; margin-bottom:4px; }
.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; }

/* Forms */
.inquiry-form, .post-job-form { max-width:600px; margin:0 auto; }
.form-row { display:flex; gap:12px; margin-bottom:12px; }
.form-row > * { flex:1; }
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); }
textarea { resize:vertical; }
fieldset { border:1px solid var(--border); border-radius:var(--radius); padding:20px; margin-bottom:16px; }
fieldset legend { color:var(--primary); font-weight:600; padding:0 8px; }
.salary-row { display:flex; align-items:center; gap:8px; }
.salary-row span { 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;
}

/* Language dropdown */
.lang-dropdown { position: relative; }
.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 120px;
  z-index: 200;
  box-shadow: var(--shadow);
}
.dropdown-content a {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-dim);
  min-height: 44px;
}
.dropdown-content a:hover {
  background: var(--bg-hover);
  color: var(--text-bright);
}
.lang-dropdown:hover .dropdown-content,
.lang-dropdown:focus-within .dropdown-content {
  display: block;
}

/* 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-login h2 { margin-bottom:20px; text-align:center; }
.admin-login input { margin-bottom:12px; }
.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/Message states */
.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; }

/* Pagination */
.page-nav { display:flex; align-items:center; justify-content:center; gap:12px; margin:32px 0; padding:16px 0; }
.page-nav span { color:var(--text-dim); font-size:14px; }
.page-nav .btn { min-width:44px; min-height:44px; display:inline-flex; align-items:center; justify-content:center; font-size:18px; padding:8px 16px; }

/* Factory Detail */
.factory-hero { background: linear-gradient(135deg, #0b1620 0%, #132233 50%, #0d2a35 100%); padding: 60px 0 40px; position: relative; overflow: hidden; }
.factory-hero-bg { position: absolute; inset: 0; background: linear-gradient(135deg, #1e3a5f 0%, #1a5276 25%, #1a6e5c 50%, #1e8449 75%, #1e3a5f 100%); background-size: 400% 400%; animation: gradientShift 8s ease infinite; opacity: 0.3; }
@keyframes gradientShift { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
.breadcrumb { font-size: 12px; color: var(--text-dim); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-dim); }
.breadcrumb span { color: var(--text-bright); }
.factory-hero-content { text-align: center; }
.verified-badge { display: inline-block; background: var(--amber); color: #000; font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 16px; margin-bottom: 12px; }
.factory-hero h1 { font-size: 36px; color: var(--text-bright); margin-bottom: 8px; }
.hero-location { color: var(--text-dim); font-size: 15px; margin-bottom: 8px; }
.hero-rating { color: var(--text-dim); font-size: 13px; }
.hero-rating .stars { color: var(--amber); }

/* Stats Bar */
.factory-stats-bar { margin-top: -20px; position: relative; z-index: 10; }
.factory-stats-bar .stat-grid { grid-template-columns: repeat(6, 1fr); }
.factory-stats-bar .stat-card { background: var(--bg-card); }
.stat-label { display: block; font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { display: block; font-size: 18px; font-weight: 700; color: var(--text-bright); margin-top: 4px; }

/* Factory Layout */
.factory-body { padding: 40px 0; }
.factory-layout { display: grid; grid-template-columns: 1fr 340px; gap: 32px; }
.factory-main { min-width: 0; }
.factory-sidebar { display: flex; flex-direction: column; gap: 20px; }

/* Cards */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.card h2 { font-size: 20px; color: var(--text-bright); margin-bottom: 16px; text-align: left; }
.card h3 { font-size: 16px; color: var(--text-bright); margin-bottom: 12px; }
.prose { color: var(--text-dim); line-height: 1.8; }
.prose p { margin-bottom: 12px; }

/* Capability Grid */
.capability-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-bottom: 16px; }
.capability-item { display: flex; align-items: flex-start; gap: 8px; padding: 12px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 13px; transition: .2s; }
.capability-item:hover { border-color: var(--primary); }
.cap-icon { color: var(--primary); font-size: 10px; margin-top: 2px; flex-shrink: 0; }
.cap-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.cap-tag { display: inline-block; padding: 4px 12px; background: var(--bg-hover); border: 1px solid var(--border); border-radius: 16px; font-size: 12px; color: var(--text-dim); }

/* Gallery */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.gallery-placeholder { aspect-ratio: 1; background: linear-gradient(135deg, #1e3a5f 0%, #1a5276 50%, #1a6e5c 100%); background-size: 300% 300%; animation: gradientShift 8s ease infinite; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 12px; color: rgba(255,255,255,0.6); }
.gallery-img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius); }

/* Contact Form */
.contact-form input, .contact-form textarea { margin-bottom: 10px; }
.contact-form input:last-of-type { margin-bottom: 12px; }

/* Info List */
.info-list div { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.info-list div:last-child { border-bottom: none; }
.info-list dt { color: var(--text-dim); }
.info-list dd { color: var(--text-bright); font-weight: 500; text-align: right; max-width: 180px; }

/* Cluster Advantage */
.cluster-advantage { border: 1px solid rgba(245,158,11,0.3); }
.cluster-advantage h3 { color: var(--amber) !important; }
.cluster-advantage ul { list-style: none; font-size: 13px; color: var(--text-dim); }
.cluster-advantage li { padding: 6px 0; padding-left: 16px; position: relative; }
.cluster-advantage li::before { content: '✓'; position: absolute; left: 0; color: var(--amber); }

/* Similar Factories */
.similar-factories { padding: 40px 0 60px; }
.similar-factories h2 { margin-bottom: 24px; }
.factory-cat { font-size: 12px; color: var(--text-dim); }
.factory-price { font-size: 13px; color: var(--primary); font-weight: 600; margin-top: 4px; }

/* ====== Responsive: 1024px (small desktop / landscape tablet) ====== */
@media (max-width: 1024px) {
  .container { padding: 0 16px; }
  .site-header .container { gap: 16px; }
  .main-nav a { padding: 6px 8px; font-size: 13px; }
  .factory-layout { gap: 20px; }
  .factory-stats-bar .stat-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ====== Responsive: 768px (tablet / portrait) ====== */
@media (max-width: 768px) {
  /* Header */
  .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 */
  .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; }

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

  /* Grids */
  .product-grid, .factory-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .product-img { height: 140px; }

  /* Factory */
  .factory-layout { grid-template-columns: 1fr; }
  .factory-stats-bar .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .factory-hero h1 { font-size: 24px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: 1fr; }

  /* Stat grid general */
  .stat-grid { grid-template-columns: repeat(2, 1fr); }

  /* Forms */
  .form-row { flex-direction: column; }

  /* Admin */
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }

  /* Footer */
  .footer-grid { gap: 20px; }

  /* Inline grid overrides (attribute selectors) */
  [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; }
  [style*="grid-template-columns:1fr 360px"],
  [style*="grid-template-columns: 1fr 360px"] { grid-template-columns: 1fr !important; }
}

/* ====== Responsive: 480px (small phone) ====== */
@media (max-width: 480px) {
  .container { padding: 0 12px; }

  /* Header */
  .logo { font-size: 16px; }
  .lang-dropdown { display: none; }
  .header-actions { gap: 4px; }

  /* Hero */
  .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; }

  /* Grids -- single column */
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .cat-card { padding: 16px 8px; }
  .advantage-grid, .stats-grid { grid-template-columns: 1fr; }
  .product-grid, .factory-grid { grid-template-columns: 1fr !important; }
  .footer-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .factory-stats-bar .stat-grid { grid-template-columns: repeat(2, 1fr); }

  /* Product cards */
  .product-img { height: 180px; }

  /* Factory */
  .factory-hero h1 { font-size: 20px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }

  /* Buttons */
  .btn-lg { padding: 12px 20px; font-size: 14px; }

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

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