/* ============================================================
   主题 2 - 煤黑金 (工业黑金)
   ============================================================ */
body.theme-2 {
  color: #1a1a1a;
  background: #f5f5f5;
  --t-primary: #1a1a1a;
  --t-primary-deep: #000000;
  --t-primary-light: #2d2d2d;
  --t-accent: #e8b04b;
  --t-accent-light: #f4c674;
  --t-accent-dark: #b88830;
  --t-border: #e0e0e0;
  --t-text: #1a1a1a;
  --t-text-mid: #4a4a4a;
  --t-text-light: #6a6a6a;
  --t-bg-alt: #ededed;
  --t-bg: #f5f5f5;
  --t-card: #ffffff;
}

body.theme-2 h1, body.theme-2 h2, body.theme-2 h3, body.theme-2 h4, body.theme-2 h5, body.theme-2 h6 {
  color: var(--t-primary);
  font-family: 'Noto Serif SC', 'Source Han Serif SC', serif;
}
body.theme-2 .hero { background: var(--t-primary-deep); color: #fff; }
body.theme-2 .hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%),
    repeating-linear-gradient(45deg, transparent 0, transparent 40px, rgba(232, 176, 75, 0.04) 40px, rgba(232, 176, 75, 0.04) 41px);
}
body.theme-2 .hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(232, 176, 75, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 176, 75, 0.05) 1px, transparent 1px);
  background-size: 80px 80px;
}
body.theme-2 .hero h1 { color: #fff; }
body.theme-2 .hero h1 .accent { color: var(--t-accent); }
body.theme-2 .hero-desc { color: rgba(255,255,255,0.85); }
body.theme-2 .hero-badge { border: 1px solid var(--t-accent); color: var(--t-accent-light); background: rgba(232, 176, 75, 0.08); }
body.theme-2 .hero-badge .dot { background: var(--t-accent); }
body.theme-2 .hero-stat-num { color: var(--t-accent); font-family: 'Noto Serif SC', serif; }
body.theme-2 .hero-stat-label { color: rgba(255,255,255,0.75); }
body.theme-2 .hero-stats { border-top: 1px solid rgba(232, 176, 75, 0.3); }
body.theme-2 .hero-scroll { color: var(--t-accent-light); }
body.theme-2 .hero-scroll .arrow { background: linear-gradient(to bottom, var(--t-accent), transparent); }

body.theme-2 .section-alt { background: var(--t-bg-alt); }
body.theme-2 .section-eyebrow { color: var(--t-accent-dark); }
body.theme-2 .section-eyebrow::before { background: var(--t-accent); }
body.theme-2 .section-desc { color: var(--t-text-mid); }
body.theme-2 .service-card { background: var(--t-card); border: 1px solid var(--t-border); }
body.theme-2 .service-card::before { background: var(--t-accent); }
body.theme-2 .service-card:hover { border-color: var(--t-accent); box-shadow: 0 16px 40px rgba(0,0,0,0.15); }
body.theme-2 .service-icon { background: var(--t-primary); color: var(--t-accent); }
body.theme-2 .service-link { color: var(--t-accent-dark); }
body.theme-2 .case-item { background: var(--t-card); box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
body.theme-2 .case-item:hover { box-shadow: 0 16px 40px rgba(0,0,0,0.15); }
body.theme-2 .case-tag { background: var(--t-accent); color: var(--t-primary-deep); }
body.theme-2 .case-info { border-top: 3px solid var(--t-accent); background: var(--t-card); }
body.theme-2 .case-info p { color: var(--t-text-mid); }
body.theme-2 .region-feature { background: var(--t-card); border-left: 4px solid var(--t-accent); }
body.theme-2 .region-feature h3 { color: var(--t-primary); }
body.theme-2 .region-feature p { color: var(--t-text-mid); }
body.theme-2 .region-feature-list li { color: var(--t-text-mid); }
body.theme-2 .region-feature-list li::before { color: var(--t-accent); }
body.theme-2 .process-num { background: var(--t-accent); color: var(--t-primary-deep); }
body.theme-2 .process-step p { color: var(--t-text-mid); }
body.theme-2 .application-card { background: var(--t-card); border: 1px solid var(--t-border); }
body.theme-2 .application-card::before { background: linear-gradient(90deg, var(--t-accent) 0%, var(--t-accent-light) 100%); }
body.theme-2 .application-card:hover { border-color: var(--t-accent); box-shadow: 0 12px 32px rgba(0,0,0,0.12); }
body.theme-2 .application-card p { color: var(--t-text-mid); }
body.theme-2 .cert-wrapper { background: var(--t-card); box-shadow: 0 8px 32px rgba(0,0,0,0.08); border: 1px solid var(--t-border); }
body.theme-2 .cert-image-wrap { background: linear-gradient(135deg, #faf3e0 0%, #f0e0a8 100%); }
body.theme-2 .cert-image-wrap::before, body.theme-2 .cert-image-wrap::after { border-color: var(--t-accent); }
body.theme-2 .cert-badge { background: var(--t-primary-deep); color: #fff; }
body.theme-2 .cert-badge-title { color: var(--t-accent); }
body.theme-2 .cert-features li { color: var(--t-text-mid); border-color: var(--t-border); }
body.theme-2 .cert-features .check { background: var(--t-accent); color: var(--t-primary-deep); }
body.theme-2 .contact-card { background: var(--t-card); border: 1px solid var(--t-border); }
body.theme-2 .contact-card:hover { border-color: var(--t-accent); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
body.theme-2 .contact-card-label { color: var(--t-accent-dark); }
body.theme-2 .contact-card-value { color: var(--t-primary); }
body.theme-2 .contact-card-value a { color: var(--t-primary); }
body.theme-2 .contact-card-icon { color: var(--t-accent); }
body.theme-2 .cta-banner { background: linear-gradient(135deg, var(--t-primary) 0%, var(--t-primary-light) 100%); color: #fff; }
body.theme-2 .cta-banner h2 { color: #fff; }
body.theme-2 .cta-banner p { color: rgba(255,255,255,0.85); }
body.theme-2 .btn-primary { background: var(--t-accent); color: var(--t-primary-deep); box-shadow: 0 8px 24px rgba(232, 176, 75, 0.3); }
body.theme-2 .btn-primary:hover { background: var(--t-accent-light); }
body.theme-2 .btn-outline { color: #fff; border-color: rgba(255,255,255,0.5); }
body.theme-2 .btn-outline:hover { border-color: var(--t-accent); color: var(--t-accent-light); }
body.theme-2 .site-footer { background: var(--t-primary-deep); color: rgba(255,255,255,0.75); }
body.theme-2 .footer-col h4 { color: var(--t-accent); }
body.theme-2 .footer-col ul li a { color: rgba(255,255,255,0.65); }
body.theme-2 .footer-col ul li a:hover { color: var(--t-accent); }
body.theme-2 .footer-contact li { color: rgba(255,255,255,0.7); }
body.theme-2 .footer-bottom { color: rgba(255,255,255,0.5); }
body.theme-2 .footer-bottom a { color: rgba(255,255,255,0.7); }
body.theme-2 .footer-bottom a:hover { color: var(--t-accent-light); }
body.theme-2 .footer-tech { color: rgba(255,255,255,0.5); }
body.theme-2 .footer-tech a { color: var(--t-accent-light); }
body.theme-2 .footer-tech a:hover { color: #fff; }
body.theme-2 .footer-sitemap a { color: rgba(255,255,255,0.7); }
body.theme-2 .footer-sitemap a:hover { color: var(--t-accent-light); }
body.theme-2 .footer-cities-title { color: var(--t-accent); }
body.theme-2 .footer-cities-list a { color: rgba(255,255,255,0.6); }
body.theme-2 .footer-cities-list a:hover { color: var(--t-accent); background: rgba(232, 176, 75, 0.1); }