#contact { padding-top: 52px; padding-bottom: 52px; }
:root {
    --primary: #1a4f8b;
    --primary-light: #2c6cab;
    --primary-dark: #0d3266;
    --accent: #d4a017;
    --accent-light: #e8c040;
    --bg-light: #f7f9fc;
    --text-dark: #1a1a2e;
    --text-gray: #5a6273;
    --white: #ffffff;
    --shadow: 0 4px 24px rgba(26, 79, 139, 0.08);
    --shadow-hover: 0 8px 40px rgba(26, 79, 139, 0.15);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    color: var(--text-dark);
    background: var(--white);
    line-height: 1.7;
  }
  .navbar {
    position: fixed; top: 0; left: 0; width: 100%; height: 76px;
    background: rgba(255, 255, 255, 0.97); backdrop-filter: blur(12px);
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06); z-index: 1000;
    display: flex; align-items: center; justify-content: space-between; padding: 0 5%;
  }
  .navbar .logo img { height: 46px; object-fit: contain; }
  .nav-links { display: flex; gap: 36px; list-style: none; }
  .nav-links a {
    text-decoration: none; color: var(--text-dark); font-size: 15px;
    font-weight: 500; transition: color 0.3s; position: relative;
  }
  .nav-links a:hover { color: var(--primary); }
  .nav-links a::after {
    content: ''; position: absolute; bottom: -6px; left: 0; width: 0; height: 2px;
    background: var(--accent); transition: width 0.3s;
  }
  .nav-links a:hover::after { width: 100%; }
  .nav-links a.active { color: var(--primary); font-weight: 700; }
  .nav-links a.active::after { width: 100%; }
  .nav-right { display: flex; align-items: center; gap: 20px; }
  .nav-phone { font-size: 18px; font-weight: 700; color: var(--primary); text-decoration: none; white-space: nowrap; display: flex; align-items: center; gap: 6px; }
  .nav-phone i { color: var(--accent); font-size: 16px; }
  .nav-cta {
    background: var(--primary); color: var(--white); padding: 8px 24px;
    border-radius: 6px; font-size: 14px; text-decoration: none; transition: background 0.3s;
  }
  .nav-cta:hover { background: var(--primary-dark); }
  .qr-modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5); z-index: 9999;
    display: none; align-items: center; justify-content: center;
    backdrop-filter: blur(4px);
  }
  .qr-modal-overlay.show { display: flex; }
  .qr-modal {
    background: #fff; border-radius: 20px; padding: 40px 36px 32px;
    max-width: 320px; width: 88%; text-align: center; position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalIn 0.3s ease;
  }
  @keyframes modalIn {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
  }
  .qr-modal-close {
    position: absolute; top: 16px; right: 16px;
    width: 32px; height: 32px; border-radius: 50%;
    background: #f0f0f0; border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; color: #999; transition: all 0.3s;
  }
  .qr-modal-close:hover { background: #e0e0e0; color: #666; }
  .qr-modal h3 { font-size: 22px; font-weight: 700; color: #0d3266; margin-bottom: 8px; }
  .qr-modal .qr-modal-sub { font-size: 13px; color: #999; margin-bottom: 24px; }
  .qr-modal-img { width: 200px; height: 200px; margin: 0 auto 20px; border-radius: 12px; border: 1px solid #eef0f4; }
  .qr-modal-tip { font-size: 14px; color: #666; margin-bottom: 4px; }
  .qr-modal-tip span { color: #1a4f8b; font-weight: 600; }
  .qr-modal-desc { font-size: 12px; color: #aaa; }
  .nav-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--primary); cursor: pointer; padding: 4px 8px; }
  .page-header {
    background: var(--primary-dark);
    padding: 140px 5% 60px; text-align: center; color: var(--white);
    position: relative; overflow: hidden;
  }
  .page-header::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-image:
      radial-gradient(circle at 20% 30%, rgba(212, 160, 23, 0.10) 0%, transparent 50%),
      radial-gradient(circle at 80% 70%, rgba(212, 160, 23, 0.06) 0%, transparent 40%);
    pointer-events: none;
  }
  .page-header-content { position: relative; z-index: 2; max-width: 800px; margin: 0 auto; }
  .page-header .sub-tagline { font-size: 14px; color: var(--accent-light); letter-spacing: 6px; margin-bottom: 12px; }
  .page-header h1 { font-size: 36px; letter-spacing: 4px; font-weight: 700; margin-bottom: 12px; }
  .page-header p { font-size: 15px; color: rgba(255, 255, 255, 0.7); }
  .section { padding: 60px 5%; }
  .article-wrap { max-width: 860px; margin: 0 auto; }
  .article-card {
    background: var(--white); border-radius: 16px; box-shadow: var(--shadow);
    padding: 48px 56px; border-top: 4px solid var(--accent);
  }
  .article-cat-tag {
    display: inline-block; padding: 5px 16px; border-radius: 20px;
    font-size: 13px; font-weight: 600; color: var(--white); margin-bottom: 20px;
  }
  .article-title { font-size: 28px; font-weight: 700; line-height: 1.5; margin-bottom: 18px; color: var(--text-dark); }
  .article-meta {
    display: flex; align-items: center; gap: 20px; font-size: 13px;
    color: var(--text-gray); padding-bottom: 24px; margin-bottom: 28px;
    border-bottom: 1px solid #eef0f4;
  }
  .article-meta i { color: var(--accent); margin-right: 4px; }
  .article-body p {
    font-size: 16px; color: var(--text-dark); line-height: 2;
    margin-bottom: 20px; text-indent: 2em;
  }
  .article-back {
    display: inline-flex; align-items: center; gap: 8px;
    margin-top: 36px; color: var(--primary); font-weight: 600;
    text-decoration: none; font-size: 15px;
  }
  .article-back:hover { color: var(--primary-dark); }
  .related-title { margin: 48px 0 24px; font-size: 20px; font-weight: 700; color: var(--text-dark); }
  .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .related-item {
    background: var(--bg-light); border-radius: 12px; padding: 20px;
    cursor: pointer; transition: all 0.3s; border: 1px solid transparent;
    display: block; text-decoration: none; color: inherit;
  }
  .related-item:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow-hover); }
  .related-item .r-cat { font-size: 12px; color: var(--primary); font-weight: 600; margin-bottom: 8px; display: block; }
  .related-item .r-title { font-size: 14px; font-weight: 600; line-height: 1.5; color: var(--text-dark); }
  .related-item .r-date { font-size: 12px; color: var(--text-gray); margin-top: 10px; }
  .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  @media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .article-card { padding: 32px 24px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 600px) {
    .navbar { height: 60px; padding: 0 3%; }
    .navbar .logo img { height: 34px; }
    .nav-phone { font-size: 14px; }
    .nav-cta { padding: 6px 16px; font-size: 12px; }
    .page-header { padding: 100px 5% 40px; }
    .page-header h1 { font-size: 26px; letter-spacing: 2px; }
    .section { padding: 40px 5%; }
    .article-card { padding: 24px 18px; }
    .article-title { font-size: 20px; }
    .related-grid { grid-template-columns: 1fr; }
  }
  .nav-links.mobile-open {
    display: flex !important;
    position: absolute; top: 60px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: rgba(255,255,255,0.98);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    padding: 0; margin: 0;
  }
  .nav-links.mobile-open li { padding: 14px 5%; border-bottom: 1px solid #eef0f4; }
  .nav-links.mobile-open a { font-size: 15px; }
  footer { background: var(--primary-dark); padding: 30px 5%; text-align: center; }
  footer p { color: rgba(255, 255, 255, 0.5); font-size: 13px; }
  footer a { color: inherit; }