/* roulang page: index */
:root {
    --color-ink: #111827;
    --color-ink-deep: #0B0E14;
    --color-bamboo: #16A34A;
    --color-bamboo-light: #22C55E;
    --color-bamboo-dark: #15803D;
    --color-cream: #FAFAF7;
    --color-white: #FFFFFF;
    --color-text: #1F2937;
    --color-text-secondary: #6B7280;
    --color-text-muted: #9CA3AF;
    --color-border: #E5E7EB;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --shadow-card: 0 2px 12px rgba(0,0,0,0.05);
    --shadow-card-hover: 0 8px 30px rgba(0,0,0,0.10);
  }
  * {
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    margin: 0;
    font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-cream);
    color: var(--color-text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img {
    max-width: 100%;
    display: block;
  }
  a {
    text-decoration: none;
    color: inherit;
  }
  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }
  input, select, textarea {
    font-family: inherit;
    font-size: 14px;
  }
  .container-custom {
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 16px;
    padding-right: 16px;
  }
  @media (min-width: 768px) {
    .container-custom {
      padding-left: 24px;
      padding-right: 24px;
    }
  }
  @media (min-width: 1024px) {
    .container-custom {
      padding-left: 32px;
      padding-right: 32px;
    }
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 24px;
    background-color: var(--color-bamboo);
    color: #fff;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    line-height: 1;
    transition: all 0.2s ease-out;
    border: none;
    white-space: nowrap;
  }
  .btn-primary:hover {
    background-color: var(--color-bamboo-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(22, 163, 74, 0.25);
  }
  .btn-primary:active {
    transform: translateY(0);
    filter: brightness(0.95);
  }
  .btn-primary:disabled {
    background-color: #d1d5db;
    color: #6b7280;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
  }
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 24px;
    background-color: #fff;
    border: 1px solid #d1d5db;
    color: #1f2937;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 15px;
    transition: all 0.2s ease-out;
    white-space: nowrap;
  }
  .btn-secondary:hover {
    border-color: var(--color-ink);
    color: var(--color-ink);
    transform: translateY(-1px);
    box-shadow: var(--shadow-card);
  }
  .btn-secondary-dark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 24px;
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #fff;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 15px;
    backdrop-filter: blur(4px);
    transition: all 0.2s ease-out;
    white-space: nowrap;
  }
  .btn-secondary-dark:hover {
    background-color: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
  }

  .nav-card {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.07);
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: all 0.2s ease-out;
    border-bottom: 2px solid transparent;
  }
  .nav-card:hover {
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
  }
  .nav-card:hover .nav-icon {
    stroke: var(--color-bamboo-light);
  }
  .nav-card.active {
    background: rgba(255, 255, 255, 0.12);
    border-bottom-color: var(--color-bamboo-light);
    color: #fff;
  }
  .nav-card.active .nav-icon {
    stroke: var(--color-bamboo-light);
  }
  .mobile-nav-item {
    display: block;
    padding: 12px 16px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease-out;
    border-left: 3px solid transparent;
  }
  .mobile-nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
  }
  .mobile-nav-item.active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border-left-color: var(--color-bamboo-light);
  }

  .section-tag {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(22, 163, 74, 0.08);
    color: var(--color-bamboo);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
    border: 1px solid rgba(22, 163, 74, 0.15);
  }
  .section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--color-ink);
    letter-spacing: -0.02em;
    margin-top: 12px;
    margin-bottom: 8px;
    line-height: 1.25;
  }
  .section-subtitle {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
  }

  .link-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-bamboo);
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s ease-out;
  }
  .link-more:hover {
    gap: 8px;
    text-decoration: underline;
    text-underline-offset: 3px;
    color: var(--color-bamboo-dark);
  }

  .badge {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(22, 163, 74, 0.08);
    color: var(--color-bamboo-dark);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
  }

  .card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid #f0f0f0;
    box-shadow: var(--shadow-card);
    transition: all 0.25s ease-out;
    overflow: hidden;
  }
  .card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
  }

  .news-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid #f0f0f0;
    box-shadow: var(--shadow-card);
    padding: 16px;
    transition: all 0.2s ease-out;
  }
  .news-item:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-1px);
  }
  .news-item .thumb {
    width: 96px;
    height: 79px;
    border-radius: 12px;
    object-fit: cover;
    flex-shrink: 0;
    background: #f3f4f6;
  }
  @media (max-width: 640px) {
    .news-item {
      flex-wrap: wrap;
    }
    .news-item .thumb {
      width: 100%;
      height: 140px;
    }
  }

  .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px dashed #e5e7eb;
    text-align: center;
  }
  .empty-state p {
    margin-top: 14px;
    color: var(--color-text-secondary);
    font-size: 15px;
  }

  .faq-item {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid #f0f0f0;
    box-shadow: var(--shadow-card);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.2s ease-out;
  }
  .faq-item.active {
    border-left: 3px solid var(--color-bamboo);
  }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 20px 24px;
    font-weight: 600;
    font-size: 15px;
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
    transition: color 0.2s ease;
  }
  .faq-question:hover {
    color: var(--color-bamboo-dark);
  }
  .faq-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
    color: var(--color-text-muted);
  }
  .faq-item.active .faq-icon {
    transform: rotate(135deg);
    color: var(--color-bamboo);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    padding: 0 24px;
  }
  .faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 24px 20px;
  }
  .faq-answer p {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin: 0;
    padding-top: 4px;
  }

  .form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 6px;
  }
  .form-input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid #d1d5db;
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--color-text);
    background: #fff;
    transition: all 0.2s ease-out;
    outline: none;
  }
  .form-input:focus {
    border-color: var(--color-bamboo);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
  }
  .form-textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #d1d5db;
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--color-text);
    transition: all 0.2s ease-out;
    outline: none;
    resize: vertical;
    min-height: 80px;
  }
  .form-textarea:focus {
    border-color: var(--color-bamboo);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
  }

  .footer-link {
    color: rgba(255, 255, 255, 0.55);
    font-size: 14px;
    transition: color 0.2s ease;
  }
  .footer-link:hover {
    color: var(--color-bamboo-light);
  }

  .hero-stats {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  @media (max-width: 768px) {
    .hero-stats {
      border-top: none;
    }
    .hero-stats > div {
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 14px;
    }
  }

/* roulang page: category1 */
:root {
    --color-ink: #111827;
    --color-inkdeep: #0B0E14;
    --color-bamboo: #16A34A;
    --color-bamboo-bright: #22C55E;
    --color-bamboo-dark: #15803D;
    --color-cream: #FAFAF7;
    --color-white: #FFFFFF;
    --color-text: #1F2937;
    --color-text-secondary: #6B7280;
    --color-text-muted: #9CA3AF;
    --color-border: #E5E7EB;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-card: 16px;
    --radius-panel: 20px;
    --shadow-card: 0 2px 12px rgba(0,0,0,0.05);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.10);
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body { font-family: 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--color-cream); color: var(--color-text); line-height: 1.75; -webkit-font-smoothing: antialiased; }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; }
  button { cursor: pointer; font-family: inherit; }
  input, select, textarea { font-family: inherit; }

  .container-custom { max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
  @media (min-width: 768px) { .container-custom { padding: 0 1.5rem; } }
  @media (min-width: 1024px) { .container-custom { padding: 0 2rem; } }

  /* ===== 导航 ===== */
  .site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; padding: 16px 16px 0; }
  .nav-panel { background: rgba(11,14,20,0.97); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-radius: 20px; border: 1px solid rgba(255,255,255,0.08); box-shadow: 0 12px 40px rgba(0,0,0,0.28); max-width: 1280px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .nav-logo { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
  .nav-logo-text { color: #fff; font-weight: 800; font-size: 1.05rem; letter-spacing: -0.01em; white-space: nowrap; }
  .nav-logo-badge { background: var(--color-bamboo); color: #fff; font-size: 0.625rem; font-weight: 600; border-radius: 999px; padding: 2px 8px; letter-spacing: 0.04em; line-height: 1.4; }
  .nav-card { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,255,255,0.08); border-radius: 12px; padding: 8px 16px; font-size: 0.875rem; font-weight: 500; color: rgba(255,255,255,0.85); transition: all 0.2s ease-out; border: none; }
  .nav-card:hover { background: rgba(255,255,255,0.18); color: #fff; }
  .nav-card.active { background: rgba(255,255,255,0.15); color: #fff; box-shadow: inset 0 -2px 0 var(--color-bamboo); }
  .nav-card .nav-icon { transition: color 0.2s ease-out; flex-shrink: 0; }
  .nav-card:hover .nav-icon { color: var(--color-bamboo-bright); }
  .btn-cta-nav { background: var(--color-bamboo); color: #fff; border-radius: 10px; padding: 10px 20px; font-size: 0.875rem; font-weight: 600; border: none; transition: all 0.2s ease-out; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
  .btn-cta-nav:hover { background: var(--color-bamboo-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(22,163,74,0.35); }
  .btn-cta-nav:active { transform: translateY(0); filter: brightness(0.95); }
  .hamburger { display: none; background: rgba(255,255,255,0.12); border: none; border-radius: 10px; padding: 8px 12px; color: #fff; line-height: 0; }
  .mobile-menu { display: none; width: 100%; flex-direction: column; gap: 8px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,0.08); margin-top: 10px; }
  .mobile-menu.open { display: flex; }
  .mobile-menu .nav-card { justify-content: center; width: 100%; padding: 10px 16px; }
  .mobile-menu .btn-cta-nav { width: 100%; justify-content: center; margin-top: 2px; }
  @media (max-width: 767px) {
    .nav-panel { flex-wrap: wrap; padding: 12px 14px; }
    .nav-panel .desktop-nav { display: none; }
    .nav-panel .desktop-cta { display: none; }
    .hamburger { display: block; }
    #mobileMenu { display: none; }
    #mobileMenu.open { display: flex; }
  }

  /* ===== 按钮 ===== */
  .btn-primary { display: inline-flex; align-items: center; justify-content: center; background: var(--color-bamboo); color: #fff; border-radius: 10px; height: 44px; padding: 0 24px; font-size: 0.9375rem; font-weight: 600; border: none; transition: all 0.2s ease-out; gap: 6px; }
  .btn-primary:hover { background: var(--color-bamboo-dark); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(22,163,74,0.35); }
  .btn-primary:active { transform: translateY(0); filter: brightness(0.95); }
  .btn-primary:disabled { background: #9CA3AF; cursor: not-allowed; transform: none; box-shadow: none; }
  .btn-secondary { display: inline-flex; align-items: center; justify-content: center; background: #fff; color: var(--color-text); border: 1px solid #D1D5DB; border-radius: 10px; height: 44px; padding: 0 24px; font-size: 0.9375rem; font-weight: 500; transition: all 0.2s ease-out; }
  .btn-secondary:hover { border-color: var(--color-ink); color: var(--color-ink); transform: translateY(-1px); }
  .btn-secondary-dark { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: #fff; }
  .btn-secondary-dark:hover { background: rgba(255,255,255,0.18); border-color: rgba(255,255,255,0.4); }
  .text-link { display: inline-flex; align-items: center; gap: 4px; color: var(--color-bamboo); font-weight: 600; font-size: 0.875rem; transition: all 0.2s ease-out; }
  .text-link:hover { gap: 8px; text-decoration: underline; }

  /* ===== 卡片 ===== */
  .card { background: #fff; border-radius: 16px; border: 1px solid #F0F0F0; box-shadow: var(--shadow-card); transition: all 0.3s ease-out; }
  .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
  .card-hover-accent:hover { border-top: 3px solid var(--color-bamboo); }

  /* ===== 统计 ===== */
  .stat-number { font-family: 'Noto Sans SC', sans-serif; font-variant-numeric: tabular-nums; font-weight: 800; }

  /* ===== FAQ ===== */
  .faq-item { border-bottom: 1px solid #F0F0F0; }
  .faq-item:last-child { border-bottom: none; }
  .faq-question { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 24px; font-weight: 600; font-size: 0.9375rem; color: var(--color-text); cursor: pointer; transition: color 0.2s; }
  .faq-question:hover { color: var(--color-bamboo); }
  .faq-icon { transition: transform 0.3s ease-out; flex-shrink: 0; color: #9CA3AF; }
  .faq-item.open .faq-icon { transform: rotate(45deg); color: var(--color-bamboo); }
  .faq-item.open .faq-question { color: var(--color-ink); }
  .faq-answer { max-height: 0; overflow: hidden; padding: 0 24px; transition: max-height 0.35s ease-out, padding 0.3s ease-out; color: #4B5563; font-size: 0.875rem; line-height: 1.75; }
  .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }
  .faq-item.open { border-left: 3px solid var(--color-bamboo); }

  /* ===== 表单 ===== */
  .form-input { width: 100%; height: 44px; border: 1px solid #D1D5DB; border-radius: 10px; padding: 0 16px; font-size: 0.875rem; color: var(--color-text); background: #fff; transition: border-color 0.2s, box-shadow 0.2s; }
  .form-input:focus { outline: none; border-color: var(--color-bamboo); box-shadow: 0 0 0 3px rgba(22,163,74,0.15); }
  textarea.form-input { height: auto; padding: 12px 16px; resize: vertical; }

  /* ===== 时间线 ===== */
  .timeline { position: relative; padding-left: 32px; }
  .timeline::before { content: ''; position: absolute; left: 10px; top: 4px; bottom: 4px; width: 2px; background: rgba(22,163,74,0.25); }
  .timeline-item { position: relative; padding-bottom: 32px; }
  .timeline-item:last-child { padding-bottom: 0; }
  .timeline-item::before { content: ''; position: absolute; left: -28px; top: 4px; width: 12px; height: 12px; border-radius: 999px; background: var(--color-bamboo); border: 2px solid #fff; box-shadow: 0 0 0 2px var(--color-bamboo); }

  /* ===== 图片遮罩 ===== */
  .img-overlay { position: relative; }
  .img-overlay::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(11,14,20,0.85) 0%, rgba(11,14,20,0.3) 50%, rgba(11,14,20,0.1) 100%); border-radius: inherit; }
  .img-overlay > * { position: relative; z-index: 1; }

  /* ===== 弹窗 ===== */
  .modal-overlay { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; padding: 1rem; opacity: 0; visibility: hidden; transition: opacity 0.25s ease-out, visibility 0.25s; }
  .modal-overlay.open { opacity: 1; visibility: visible; }
  .modal-content { background: #fff; border-radius: 20px; padding: 2rem; max-width: 480px; width: 100%; transform: scale(0.96); transition: transform 0.25s ease-out; max-height: 90vh; overflow-y: auto; position: relative; }
  .modal-overlay.open .modal-content { transform: scale(1); }
  .modal-close { position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; border-radius: 999px; background: #F3F4F6; border: none; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; color: #6B7280; transition: all 0.2s; line-height: 1; }
  .modal-close:hover { background: var(--color-ink); color: #fff; }
  .form-success-msg { display: none; background: rgba(22,163,74,0.08); border: 1px solid rgba(22,163,74,0.2); color: var(--color-bamboo); border-radius: 10px; padding: 12px 16px; font-size: 0.875rem; text-align: center; }
  .form-success-msg.show { display: block; }

  /* ===== 其他 ===== */
  .section-pad { padding: 4rem 0; }
  @media (min-width: 768px) { .section-pad { padding: 5.5rem 0; } }
  .section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; letter-spacing: -0.02em; color: var(--color-ink); line-height: 1.3; }
  .section-sub { font-size: 0.9375rem; color: var(--color-text-secondary); margin-top: 8px; }
  .badge-bamboo { display: inline-flex; align-items: center; background: rgba(22,163,74,0.1); color: var(--color-bamboo); font-size: 0.75rem; font-weight: 600; border-radius: 6px; padding: 3px 10px; }
  .footer-link { color: #D1D5DB; font-size: 0.875rem; transition: color 0.2s; }
  .footer-link:hover { color: var(--color-bamboo-bright); }
  .check-icon { color: var(--color-bamboo); flex-shrink: 0; }
  .breadcrumb { font-size: 0.8125rem; color: #9CA3AF; }
  .breadcrumb a { transition: color 0.2s; }
  .breadcrumb a:hover { color: var(--color-bamboo); }
  .breadcrumb .current { color: var(--color-text); font-weight: 500; }
  .back-link-area { padding: 2.5rem 0 0; }

  a:focus-visible, button:focus-visible { outline: 2px solid var(--color-bamboo); outline-offset: 2px; border-radius: 4px; }

/* roulang page: article */
:root {
  --color-ink: #111827;
  --color-ink-deep: #0B0E14;
  --color-bamboo: #16A34A;
  --color-bamboo-light: #22C55E;
  --color-bamboo-dark: #15803D;
  --color-cream: #FAFAF7;
  --color-white: #ffffff;
  --color-text: #1F2937;
  --color-text-sub: #6B7280;
  --color-text-mute: #9CA3AF;
  --color-border: #E5E7EB;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-card: 0 2px 12px rgba(0,0,0,0.05);
  --shadow-card-hover: 0 8px 30px rgba(0,0,0,0.10);
  --shadow-nav: 0 8px 40px rgba(0,0,0,0.18);
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--color-cream);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, select, textarea { font-family: inherit; }

.container-custom {
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 768px) {
  .container-custom { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 1024px) {
  .container-custom { padding-left: 2rem; padding-right: 2rem; }
}

/* 导航控制面板 */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 2rem);
  max-width: 78rem;
  background: var(--color-ink-deep);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-xl);
  padding: 10px 16px;
  z-index: 100;
  box-shadow: var(--shadow-nav);
}
.nav-card {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
  color: #D1D5AF;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s ease-out, color 0.2s ease-out;
}
.nav-card:hover { background: rgba(255,255,255,0.18); color: #ffffff; }
.nav-card:hover .nav-icon { color: var(--color-bamboo-light); }
.nav-card.active {
  background: rgba(255,255,255,0.12);
  color: #ffffff;
  box-shadow: inset 0 -2px 0 var(--color-bamboo);
}
.nav-icon { color: #D1D5AF; transition: color 0.2s; }
.badge-china {
  background: var(--color-bamboo);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 9999px;
  letter-spacing: 0.02em;
  line-height: 1.4;
}
.mobile-nav-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
  color: #D1D5AF;
  font-weight: 500;
  transition: background 0.2s;
}
.mobile-nav-card:hover { background: rgba(255,255,255,0.16); color: #ffffff; }
.mobile-nav-card.active { background: rgba(255,255,255,0.14); color: #ffffff; box-shadow: inset 0 -2px 0 var(--color-bamboo); }

/* 按钮 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bamboo);
  color: #ffffff;
  border-radius: var(--radius-md);
  height: 44px;
  padding: 0 24px;
  font-weight: 600;
  font-size: 15px;
  transition: background 0.2s ease-out, transform 0.2s ease-out, box-shadow 0.2s ease-out;
}
.btn-primary:hover { background: var(--color-bamboo-dark); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(22,163,74,0.25); }
.btn-primary:active { transform: translateY(0); filter: brightness(0.95); }
.btn-primary:disabled { background: #D1D5DB; color: #6B7280; transform: none; box-shadow: none; cursor: not-allowed; }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border: 1px solid var(--color-border);
  color: #1F2937;
  border-radius: var(--radius-md);
  height: 44px;
  padding: 0 24px;
  font-weight: 600;
  font-size: 15px;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.btn-secondary:hover { border-color: var(--color-ink); color: var(--color-ink); transform: translateY(-1px); }

/* 链接 */
.link-arrow { color: var(--color-bamboo); font-weight: 600; font-size: 14px; transition: color 0.2s; }
.link-arrow .arrow { display: inline-block; transition: transform 0.2s; }
.link-arrow:hover .arrow { transform: translateX(4px); }

/* 卡片 */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid #F0F0F0;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease-out, transform 0.2s ease-out;
}
.card:hover { box-shadow: var(--shadow-card-hover), inset 0 2px 0 var(--color-bamboo); transform: translateY(-2px); }

/* 标签 */
.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 9999px;
  background: #F3F4F6;
  color: #4B5563;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}
.tag:hover { background: var(--color-bamboo); color: #ffffff; }
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px;
  background: rgba(22,163,74,0.1);
  color: var(--color-bamboo);
  font-size: 13px;
  font-weight: 600;
}

/* 面包屑 */
.breadcrumb { font-size: 13px; color: var(--color-text-mute); padding-top: 104px; margin-bottom: 8px; }
.breadcrumb a { transition: color 0.2s; }
.breadcrumb a:hover { color: var(--color-bamboo); }
.breadcrumb .sep { margin: 0 8px; color: #D1D5AE; }

/* 文章正文 */
.article-content { font-size: 16px; line-height: 1.9; color: #374151; }
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-left: 12px;
  border-left: 4px solid var(--color-bamboo);
  line-height: 1.4;
  color: var(--color-ink);
}
.article-content h3 { font-size: 1.25rem; font-weight: 600; margin-top: 1.5rem; margin-bottom: 0.75rem; color: var(--color-ink); }
.article-content p { margin-bottom: 1.25rem; }
.article-content img { border-radius: var(--radius-lg); border: 1px solid #F0F0F0; margin: 1.5rem 0; }
.article-content blockquote {
  border-left: 4px solid var(--color-bamboo);
  background: #F9FAFB;
  padding: 1rem 1.5rem;
  border-radius: 0 12px 12px 0;
  margin: 1.5rem 0;
  color: #4B5563;
}
.article-content ul, .article-content ol { padding-left: 1.5rem; margin-bottom: 1.25rem; }
.article-content li { margin-bottom: 0.5rem; }
.article-content a { color: var(--color-bamboo); font-weight: 500; }
.article-content a:hover { text-decoration: underline; }
.article-content table { width: 100%; overflow-x: auto; display: block; border-collapse: collapse; margin: 1.5rem 0; }
.article-content th, .article-content td { border: 1px solid var(--color-border); padding: 10px 14px; text-align: left; }
.article-content th { background: #F9FAFB; font-weight: 600; }
.article-content pre { background: var(--color-ink-deep); color: #F9FAFB; padding: 1rem 1.25rem; border-radius: 12px; overflow-x: auto; margin: 1.5rem 0; font-size: 14px; }
.article-content code { background: #F3F4F6; padding: 2px 6px; border-radius: 4px; font-size: 14px; }
.article-content pre code { background: transparent; padding: 0; color: inherit; }

/* FAQ 手风琴 */
.faq-item {
  background: #ffffff;
  border: 1px solid #F0F0F0;
  border-radius: 12px;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.faq-item.open { border-color: transparent; box-shadow: var(--shadow-card-hover); }
.faq-item.open .faq-question { color: var(--color-ink); }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-question {
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  font-weight: 600;
  color: #374151;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  transition: color 0.2s;
}
.faq-icon {
  font-size: 22px;
  color: var(--color-bamboo);
  transition: transform 0.2s;
  line-height: 1;
  font-weight: 400;
  flex-shrink: 0;
}
.faq-answer {
  padding: 0 24px 20px;
  color: var(--color-text-sub);
  font-size: 14px;
  line-height: 1.75;
  display: none;
}
.faq-item.open .faq-answer { display: block; }

/* 表单 */
.form-input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 16px;
  font-size: 14px;
  color: var(--color-text);
  background: #ffffff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus {
  outline: none;
  border-color: var(--color-bamboo);
  box-shadow: 0 0 0 3px rgba(22,163,74,0.15);
}
textarea.form-input { height: auto; padding: 12px 16px; resize: vertical; }

/* 弹窗 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.25s ease-out;
}
.modal-overlay.hidden { display: none; }
.modal-content {
  background: #ffffff;
  border-radius: var(--radius-xl);
  max-width: 480px;
  width: 100%;
  padding: 2rem;
  position: relative;
  animation: scaleIn 0.25s ease-out;
  max-height: 90vh;
  overflow-y: auto;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: scale(1); } }

/* 页脚 */
.footer-link { color: #9CA3AF; transition: color 0.2s; font-size: 14px; }
.footer-link:hover { color: var(--color-bamboo-light); }

/* 响应式 */
@media (max-width: 767px) {
  .site-nav { top: 12px; width: calc(100% - 1.5rem); padding: 8px 12px; }
  .breadcrumb { padding-top: 88px; }
}

@media (min-width: 768px) {
  .mobile-menu { display: none !important; }
}