/* roulang page: index */
:root {
    --brand: #0E7A5F;
    --brand-dark: #095C47;
    --copper: #C9822D;
    --signal: #2DD4BF;
    --bg: #F7F6F3;
    --dark: #16211E;
    --card: #FFFFFF;
    --text: #1F2A26;
    --text-muted: #5C6B64;
    --border: #E4E2DC;
    --radius-card: 12px;
    --radius-btn: 8px;
    --shadow-card: 0 1px 3px rgba(22,33,30,0.06);
    --shadow-hover: 0 12px 32px rgba(22,33,30,0.10);
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.75;
    font-size: 16px;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; }
  button { font-family: inherit; cursor: pointer; }

  .container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
  @media (max-width: 639px) { .container { padding: 0 16px; } }

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    height: 68px;
    background: rgba(247,246,243,0.86);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
  }
  .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
  .brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 20px; letter-spacing: -0.02em; color: var(--text); flex-shrink: 0; }
  .brand-badge { width: 36px; height: 36px; border-radius: 10px; background: var(--brand); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
  .main-nav { display: flex; align-items: center; gap: 2px; }
  .nav-link {
    display: inline-block;
    padding: 7px 13px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    transition: all .2s ease;
    white-space: nowrap;
  }
  .nav-link:hover { background: rgba(14,122,95,0.08); color: var(--brand); }
  .nav-link.active { background: rgba(14,122,95,0.12); color: var(--brand); font-weight: 600; }
  .nav-actions { display: flex; align-items: center; gap: 8px; }
  .search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.78);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    width: 200px;
    color: var(--text-muted);
    font-size: 13px;
    cursor: text;
    transition: all .2s;
    flex-shrink: 0;
  }
  .search-box:hover { border-color: var(--brand); }
  .kbd {
    margin-left: auto;
    font-size: 11px;
    font-family: "SF Mono", "JetBrains Mono", monospace;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 5px;
    color: #8a948e;
  }
  .icon-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.7);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-decoration: none;
    transition: all .2s;
    flex-shrink: 0;
  }
  .icon-btn:hover { border-color: var(--brand); color: var(--brand); background: rgba(14,122,95,0.06); }
  .icon-btn:focus-visible { outline: 2px solid var(--copper); outline-offset: 2px; }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--radius-btn);
    background: var(--brand);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all .2s ease;
    border: 1px solid transparent;
    white-space: nowrap;
  }
  .btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(14,122,95,0.22); }
  .btn-primary:active { transform: translateY(0); box-shadow: none; }
  .btn-primary:focus-visible { outline: 2px solid var(--copper); outline-offset: 2px; }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--radius-btn);
    background: #fff;
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all .2s ease;
    border: 1px solid var(--border);
  }
  .btn-secondary:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-1px); }
  .btn-secondary:focus-visible { outline: 2px solid var(--copper); outline-offset: 2px; }

  .btn-copper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 11px 24px;
    border-radius: var(--radius-btn);
    background: var(--copper);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all .2s ease;
    box-shadow: 0 4px 20px rgba(201,130,45,0.25);
    border: 1px solid transparent;
  }
  .btn-copper:hover { background: #B06F1F; transform: translateY(-1px); box-shadow: 0 8px 26px rgba(201,130,45,0.35); }
  .btn-copper:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(201,130,45,0.2); }
  .btn-copper:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

  .btn-outline-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--radius-btn);
    background: transparent;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,0.35);
    transition: all .2s ease;
  }
  .btn-outline-light:hover { border-color: #fff; background: rgba(255,255,255,0.10); transform: translateY(-1px); }
  .btn-outline-light:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

  .hamburger {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(255,255,255,0.6);
    align-items: center;
    justify-content: center;
    color: var(--text);
  }
  .mobile-drawer { display: none; }

  @media (max-width: 1180px) {
    .search-box { width: 160px; }
    .nav-link { padding: 7px 10px; font-size: 13px; }
  }
  @media (max-width: 1023px) {
    .main-nav { display: none; }
    .search-box { display: none; }
    .hamburger { display: inline-flex; }
    .mobile-drawer.open {
      display: block;
      position: fixed;
      top: 68px;
      left: 0; right: 0;
      bottom: 0;
      background: var(--bg);
      padding: 20px 20px 40px;
      z-index: 50;
      overflow-y: auto;
      box-shadow: var(--shadow-hover);
    }
    .drawer-link {
      display: block;
      padding: 14px 8px;
      font-size: 16px;
      color: var(--text);
      text-decoration: none;
      border-bottom: 1px solid var(--border);
      font-weight: 500;
    }
    .drawer-link:hover { color: var(--brand); background: rgba(14,122,95,0.04); }
    .drawer-link.active { color: var(--brand); font-weight: 700; }
    .drawer-cta { margin-top: 24px; }
  }
  @media (max-width: 639px) {
    .nav-actions .btn-primary { display: none; }
    .nav-actions .icon-btn.search-mobile { display: inline-flex; }
    .brand { font-size: 18px; }
    .brand-badge { width: 32px; height: 32px; }
  }
  @media (min-width: 640px) {
    .search-mobile { display: inline-flex; }
  }
  @media (min-width: 1024px) {
    .search-mobile { display: none; }
  }

  /* ===== Hero ===== */
  .hero { padding: 76px 0 80px; background: var(--bg); position: relative; overflow: hidden; }
  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(14,122,95,0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(14,122,95,0.04) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    pointer-events: none;
  }
  .hero-grid { display: grid; grid-template-columns: 55% 45%; gap: 52px; align-items: center; position: relative; z-index: 1; }
  .hero h1 { font-size: 46px; line-height: 1.15; font-weight: 800; letter-spacing: -0.02em; margin: 22px 0 18px; color: var(--text); }
  .hero-sub { font-size: 17px; color: var(--text-muted); line-height: 1.85; margin-bottom: 30px; max-width: 560px; }
  .hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
  .hero-trust {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    flex-wrap: wrap;
    padding-top: 26px;
    border-top: 1px solid var(--border);
  }
  .trust-item .num { font-size: 28px; font-weight: 800; font-family: "SF Mono", "JetBrains Mono", monospace; color: var(--text); line-height: 1.2; font-variant-numeric: tabular-nums; }
  .trust-item .label { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
  .hero-visual .img-wrap {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(14,122,95,0.16);
    box-shadow: 0 20px 48px rgba(22,33,30,0.14);
    position: relative;
    background: #fff;
  }
  .hero-visual img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
  .hero-float {
    position: absolute;
    bottom: -18px;
    left: 24px;
    background: #fff;
    border-radius: 12px;
    padding: 14px 20px;
    box-shadow: 0 8px 24px rgba(22,33,30,0.12);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .hero-float .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px rgba(14,122,95,0.15); }
  .hero-float .txt { font-size: 14px; font-weight: 600; color: var(--text); }
  .hero-float .sub { font-size: 12px; color: var(--text-muted); }

  @media (max-width: 1023px) {
    .hero-grid { grid-template-columns: 1fr; gap: 28px; }
    .hero h1 { font-size: 36px; }
  }
  @media (max-width: 639px) {
    .hero { padding: 52px 0 60px; }
    .hero h1 { font-size: 31px; }
    .hero-btns { flex-direction: column; }
    .hero-btns .btn-primary, .hero-btns .btn-secondary { width: 100%; }
    .hero-trust { gap: 20px; }
    .trust-item .num { font-size: 22px; }
  }

  /* ===== Section ===== */
  .section { padding: 88px 0; }
  .section.white { background: #fff; }
  .section.alt { background: var(--bg); }
  .section.dark { background: var(--dark); color: rgba(255,255,255,0.88); }
  .kicker { font-size: 14px; font-weight: 600; color: var(--brand); letter-spacing: 0.06em; text-transform: uppercase; }
  .section.dark .kicker { color: var(--signal); }
  .section-title { font-size: 34px; font-weight: 800; line-height: 1.25; letter-spacing: -0.01em; margin: 14px 0 14px; color: var(--text); }
  .section.dark .section-title { color: #fff; }
  .section-sub { font-size: 16px; color: var(--text-muted); max-width: 660px; line-height: 1.8; }
  .section.dark .section-sub { color: rgba(255,255,255,0.68); }
  .section-head { margin-bottom: 48px; }
  .center { text-align: center; }
  .center .section-sub { margin: 0 auto; }

  @media (max-width: 767px) {
    .section { padding: 60px 0; }
    .section-title { font-size: 28px; }
    .section-head { margin-bottom: 34px; }
  }

  /* ===== Cards ===== */
  .card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 26px 24px;
    transition: all .25s ease;
    box-shadow: var(--shadow-card);
  }
  .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(14,122,95,0.28); }
  .card-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(14,122,95,0.10);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    margin-bottom: 16px;
  }
  .card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; color: var(--text); }
  .card p { font-size: 15px; color: var(--text-muted); line-height: 1.75; }

  /* ===== Pain Points ===== */
  .pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
  @media (max-width: 1023px) { .pain-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 639px) { .pain-grid { grid-template-columns: 1fr; } }

  /* ===== Solution ===== */
  .solution-grid { display: grid; grid-template-columns: 42% 58%; gap: 64px; align-items: center; }
  .solution-visual { border-radius: 16px; overflow: hidden; border: 1px solid rgba(255,255,255,0.08); position: relative; min-height: 380px; background-image: url('/assets/images/backpic/back-2.webp'); background-size: cover; background-position: center; }
  .solution-visual .overlay { position: absolute; inset: 0; background: linear-gradient(160deg, rgba(22,33,30,0.1) 0%, rgba(22,33,30,0.7) 100%); display: flex; flex-direction: column; justify-content: flex-end; padding: 28px; }
  .solution-visual .tag { font-size: 14px; color: rgba(255,255,255,0.85); font-weight: 600; }
  .solution-visual .title { font-size: 24px; font-weight: 700; color: #fff; margin-top: 6px; line-height: 1.3; }
  .step-list { display: flex; flex-direction: column; gap: 32px; }
  .step-item { display: flex; gap: 22px; align-items: flex-start; }
  .step-num {
    font-size: 30px;
    font-weight: 800;
    font-family: "SF Mono", "JetBrains Mono", monospace;
    color: var(--copper);
    line-height: 1;
    min-width: 52px;
    letter-spacing: -0.02em;
  }
  .step-item h3 { font-size: 19px; font-weight: 700; color: #fff; margin-bottom: 8px; }
  .step-item p { font-size: 15px; color: rgba(255,255,255,0.65); line-height: 1.75; }
  .step-line { width: 1px; height: 12px; background: rgba(255,255,255,0.15); margin-left: 26px; }

  @media (max-width: 1023px) {
    .solution-grid { grid-template-columns: 1fr; gap: 40px; }
    .solution-visual { min-height: 280px; }
  }

  /* ===== Stats ===== */
  .stats-wrap { position: relative; overflow: hidden; }
  .stats-wrap::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center;
    opacity: 0.06;
    pointer-events: none;
  }
  .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 1; }
  .stat-item { text-align: center; padding: 36px 16px; border-left: 1px solid var(--border); }
  .stat-item:first-child { border-left: none; }
  .stat-num { font-size: 44px; font-weight: 800; font-family: "SF Mono", "JetBrains Mono", monospace; color: var(--brand); font-variant-numeric: tabular-nums; line-height: 1.1; }
  .stat-label { font-size: 14px; color: var(--text-muted); margin-top: 10px; letter-spacing: 0.02em; }
  @media (max-width: 1023px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } .stat-item:nth-child(3) { border-left: none; } .stat-item:nth-child(2) { border-left: none; } }
  @media (max-width: 639px) { .stat-grid { grid-template-columns: 1fr; } .stat-item { border-left: none; border-bottom: 1px solid var(--border); padding: 24px 0; } }

  /* ===== Testimonials ===== */
  .testi-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; }
  .testi-col { display: flex; flex-direction: column; gap: 24px; }
  .t-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 28px; box-shadow: var(--shadow-card); transition: all .25s; }
  .t-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(14,122,95,0.2); }
  .t-quote-mark { width: 34px; height: 34px; border-radius: 8px; background: rgba(14,122,95,0.12); color: var(--brand); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800; margin-bottom: 14px; }
  .t-quote { font-size: 16px; line-height: 1.8; color: var(--text); }
  .t-person { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
  .t-avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; flex-shrink: 0; }
  .t-avatar.copper { background: var(--copper); }
  .t-name { font-size: 14px; font-weight: 700; color: var(--text); line-height: 1.3; }
  .t-role { font-size: 13px; color: var(--text-muted); }
  @media (max-width: 1023px) { .testi-grid { grid-template-columns: 1fr; } }

  /* ===== News ===== */
  .news-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 32px; }
  .news-main { background: #fff; border: 1px solid var(--border); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-card); transition: all .25s; }
  .news-main:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(14,122,95,0.25); }
  .news-main img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
  .news-main .body { padding: 24px; }
  .badge-cat { display: inline-block; font-size: 12px; font-weight: 600; color: var(--brand); background: rgba(14,122,95,0.10); border: 1px solid rgba(14,122,95,0.16); padding: 3px 12px; border-radius: 999px; margin-bottom: 12px; }
  .news-main h3 { font-size: 21px; font-weight: 700; line-height: 1.45; color: var(--text); margin-bottom: 10px; }
  .news-main p { font-size: 15px; color: var(--text-muted); line-height: 1.75; margin-bottom: 16px; }
  .news-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-muted); }
  .news-list { display: flex; flex-direction: column; gap: 16px; }
  .news-row { display: flex; gap: 18px; background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 16px; transition: all .25s; align-items: center; text-decoration: none; }
  .news-row:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(14,122,95,0.25); }
  .news-row img { width: 96px; height: 96px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
  .news-row .info h4 { font-size: 16px; font-weight: 700; color: var(--text); line-height: 1.45; margin-bottom: 6px; transition: color .2s; }
  .news-row:hover .info h4 { color: var(--brand); }
  .news-row .info .row-meta { font-size: 13px; color: var(--text-muted); }
  .news-row .info .row-summary { font-size: 13px; color: var(--text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .empty-state { background: #fff; border: 1px dashed var(--border); border-radius: 14px; padding: 60px 24px; text-align: center; color: var(--text-muted); font-size: 15px; }
  .empty-state .icon { font-size: 32px; margin-bottom: 12px; display: block; opacity: 0.5; }
  @media (max-width: 1023px) { .news-grid { grid-template-columns: 1fr; } .news-row img { width: 80px; height: 80px; } }
  @media (max-width: 639px) { .news-row { flex-direction: column; align-items: flex-start; } .news-row img { width: 100%; aspect-ratio: 16/9; height: auto; } }

  /* ===== FAQ ===== */
  .faq-wrap { max-width: 860px; margin: 0 auto; }
  .faq-item { background: #fff; border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; overflow: hidden; transition: border-color .2s; }
  .faq-item.open { border-color: rgba(14,122,95,0.30); box-shadow: var(--shadow-card); }
  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    background: #fff;
    border: none;
    text-align: left;
    gap: 16px;
  }
  .faq-q:hover { color: var(--brand); }
  .faq-q:focus-visible { outline: 2px solid var(--copper); outline-offset: -2px; border-radius: 12px; }
  .faq-q .icon { font-size: 22px; color: var(--brand); transition: transform .3s ease; flex-shrink: 0; font-weight: 300; line-height: 1; }
  .faq-item.open .faq-q .icon { transform: rotate(45deg); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
  .faq-a-inner { padding: 0 24px 20px; font-size: 15px; color: var(--text-muted); line-height: 1.8; }

  /* ===== CTA ===== */
  .cta-section { padding: 88px 0 96px; background: var(--bg); }
  .cta-box {
    background: var(--dark);
    border-radius: 24px;
    padding: 64px 56px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
  }
  .cta-box::before { content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(22,33,30,0.94) 0%, rgba(22,33,30,0.82) 100%); }
  .cta-box .inner { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }
  .cta-line { width: 48px; height: 3px; background: var(--copper); border-radius: 999px; margin: 0 auto 24px; }
  .cta-box h2 { font-size: 34px; font-weight: 800; color: #fff; line-height: 1.25; margin-bottom: 16px; letter-spacing: -0.01em; }
  .cta-box p { font-size: 16px; color: rgba(255,255,255,0.72); line-height: 1.8; margin-bottom: 32px; }
  .cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
  @media (max-width: 767px) {
    .cta-section { padding: 60px 0; }
    .cta-box { padding: 44px 20px; border-radius: 18px; }
    .cta-box h2 { font-size: 27px; }
    .cta-btns .btn-copper, .cta-btns .btn-outline-light { width: 100%; }
  }

  /* ===== Footer ===== */
  .site-footer { background: var(--dark); color: rgba(255,255,255,0.72); padding: 68px 0 0; }
  .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .footer-brand a { font-size: 20px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; text-decoration: none; letter-spacing: -0.02em; }
  .footer-desc { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.8; margin-top: 16px; max-width: 300px; }
  .footer-social { display: flex; gap: 10px; margin-top: 20px; }
  .footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: all .2s;
  }
  .footer-social a:hover { border-color: var(--brand); color: var(--brand); background: rgba(14,122,95,0.1); }
  .footer-grid h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.02em; }
  .footer-grid .f-links { display: flex; flex-direction: column; gap: 8px; }
  .footer-grid .f-links a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 14px; transition: color .2s; display: inline-block; }
  .footer-grid .f-links a:hover { color: var(--brand); padding-left: 2px; }
  .footer-contact p { font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
  .footer-contact .c-label { font-size: 13px; color: rgba(255,255,255,0.4); min-width: 56px; }
  .footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 20px 0 24px; font-size: 13px; color: rgba(255,255,255,0.4); flex-wrap: wrap; gap: 8px; }
  .footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: none; }
  .footer-bottom a:hover { color: var(--brand); }
  @media (max-width: 1023px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; } }
  @media (max-width: 639px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

/* roulang page: category1 */
:root {
        --brand: #0E7A5F;
        --brand-hover: #095C47;
        --accent: #C9822D;
        --signal: #2DD4BF;
        --bg: #F7F6F3;
        --dark: #16211E;
        --card: #FFFFFF;
        --text: #1F2A26;
        --text-muted: #5C6B64;
        --border: #E4E2DC;
        --error: #DC2626;
        --success: #0E7A5F;
        --radius: 12px;
        --radius-btn: 8px;
        --shadow-card: 0 1px 3px rgba(22, 33, 30, 0.06);
        --shadow-hover: 0 12px 32px rgba(22, 33, 30, 0.10);
    }

    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: color 0.2s ease;
    }
    button {
        border: none;
        background: none;
        cursor: pointer;
        font-family: inherit;
    }
    .container {
        max-width: 1280px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }
    @media (min-width: 1024px) {
        .container {
            padding-left: 32px;
            padding-right: 32px;
        }
    }

    /* ===== Header / Nav ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 50;
        height: 68px;
        background: rgba(255, 255, 255, 0.82);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border);
    }
    .header-inner {
        display: flex;
        align-items: center;
        height: 68px;
        gap: 24px;
    }
    .brand {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .brand-badge {
        width: 34px;
        height: 34px;
        border-radius: 10px;
        background: var(--brand);
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .brand-name {
        font-size: 19px;
        font-weight: 800;
        letter-spacing: -0.01em;
        color: var(--text);
    }
    .main-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        flex: 1;
        justify-content: center;
    }
    .nav-link {
        font-size: 14px;
        font-weight: 500;
        color: var(--text-muted);
        padding: 8px 14px;
        border-radius: 999px;
        transition: all 0.2s ease;
    }
    .nav-link:hover {
        color: var(--brand);
        background: rgba(14, 122, 95, 0.06);
    }
    .nav-link.active {
        color: var(--brand);
        background: rgba(14, 122, 95, 0.12);
        font-weight: 600;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .command-search {
        display: flex;
        align-items: center;
        gap: 8px;
        width: 200px;
        height: 36px;
        padding: 0 10px;
        background: #F2F1Ee;
        border: 1px solid var(--border);
        border-radius: 8px;
        color: var(--text-muted);
        font-size: 13px;
        cursor: text;
        transition: all 0.2s ease;
    }
    .command-search:hover {
        border-color: var(--brand);
    }
    .command-search:focus-within {
        border-color: var(--brand);
        box-shadow: 0 0 0 3px rgba(14, 122, 95, 0.15);
    }
    .command-search kbd {
        margin-left: auto;
        font-size: 11px;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: 4px;
        padding: 1px 5px;
        font-family: "SF Mono", "JetBrains Mono", monospace;
        color: var(--text-muted);
    }
    .icon-btn {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--text-muted);
        border: 1px solid var(--border);
        background: #fff;
        transition: all 0.2s ease;
    }
    .icon-btn:hover {
        color: var(--brand);
        border-color: var(--brand);
        background: rgba(14, 122, 95, 0.05);
    }
    .hamburger {
        display: none;
        width: 36px;
        height: 36px;
        border-radius: 8px;
        border: 1px solid var(--border);
        background: #fff;
        align-items: center;
        justify-content: center;
        color: var(--text);
    }
    @media (max-width: 1023px) {
        .main-nav {
            display: none;
        }
        .hamburger {
            display: flex;
        }
        .command-search {
            width: 44px;
            padding: 0;
            justify-content: center;
        }
        .command-search span {
            display: none;
        }
        .command-search kbd {
            display: none;
        }
    }
    @media (max-width: 640px) {
        .header-actions .icon-btn {
            display: none;
        }
        .brand-name {
            font-size: 17px;
        }
        .header-actions .btn-primary {
            display: none;
        }
    }
    .mobile-nav {
        display: none;
    }
    @media (max-width: 1023px) {
        .mobile-nav.open {
            display: block;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 20px;
            z-index: 49;
            box-shadow: var(--shadow-card);
        }
        .mobile-nav a {
            display: block;
            padding: 10px 12px;
            font-size: 15px;
            border-radius: 8px;
            color: var(--text);
            font-weight: 500;
        }
        .mobile-nav a.active {
            color: var(--brand);
            background: rgba(14, 122, 95, 0.08);
        }
    }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        font-size: 14px;
        font-weight: 600;
        padding: 10px 20px;
        border-radius: var(--radius-btn);
        transition: all 0.25s ease;
        border: 1px solid transparent;
        line-height: 1.4;
    }
    .btn-primary {
        background: var(--brand);
        color: #fff;
    }
    .btn-primary:hover {
        background: var(--brand-hover);
        box-shadow: 0 6px 16px rgba(14, 122, 95, 0.25);
        transform: translateY(-1px);
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: none;
    }
    .btn-primary:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
    }
    .btn-secondary {
        background: #fff;
        color: var(--text);
        border-color: var(--border);
    }
    .btn-secondary:hover {
        border-color: var(--brand);
        color: var(--brand);
    }
    .btn-outline-light {
        background: transparent;
        color: #f5f5f5;
        border-color: rgba(255, 255, 255, 0.5);
    }
    .btn-outline-light:hover {
        border-color: #fff;
        color: #fff;
        background: rgba(255, 255, 255, 0.06);
    }
    .btn-accent {
        background: var(--accent);
        color: #fff;
    }
    .btn-accent:hover {
        background: #B26F1E;
        box-shadow: 0 4px 20px rgba(201, 130, 45, 0.25);
        transform: translateY(-1px);
    }
    .btn-sm {
        padding: 8px 14px;
        font-size: 13px;
    }
    .btn-lg {
        padding: 14px 28px;
        font-size: 15px;
    }

    /* ===== Badges / Tags ===== */
    .badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        font-weight: 500;
        padding: 4px 12px;
        border-radius: 999px;
        background: rgba(14, 122, 95, 0.08);
        color: var(--brand);
        border: 1px solid rgba(14, 122, 95, 0.15);
    }
    .badge-accent {
        background: rgba(201, 130, 45, 0.10);
        color: var(--accent);
        border-color: rgba(201, 130, 45, 0.16);
    }
    .category-pill {
        display: inline-flex;
        align-items: center;
        padding: 8px 20px;
        border-radius: 999px;
        font-size: 14px;
        font-weight: 600;
        color: var(--text-muted);
        background: #fff;
        border: 1px solid var(--border);
        transition: all 0.2s ease;
    }
    .category-pill:hover {
        border-color: var(--brand);
        color: var(--brand);
        box-shadow: var(--shadow-card);
        transform: translateY(-1px);
    }
    .category-pill.active {
        background: var(--brand);
        color: #fff;
        border-color: var(--brand);
    }

    /* ===== Card ===== */
    .card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-card);
        transition: all 0.25s ease;
    }
    .card-hover:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
        border-color: rgba(14, 122, 95, 0.30);
    }
    .icon-box {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: rgba(14, 122, 95, 0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--brand);
        flex-shrink: 0;
    }

    /* ===== Hero ===== */
    .page-hero {
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 56px 0 40px;
        position: relative;
        overflow: hidden;
    }
    .page-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image: radial-gradient(rgba(14, 122, 95, 0.07) 1px, transparent 1px);
        background-size: 22px 22px;
        pointer-events: none;
    }
    .page-hero .container {
        position: relative;
        z-index: 1;
    }
    .breadcrumb {
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 6px;
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: var(--text-muted);
    }
    .breadcrumb a:hover {
        color: var(--brand);
    }
    .breadcrumb .sep {
        color: var(--border);
    }
    .breadcrumb .current {
        color: var(--text);
        font-weight: 500;
    }
    .page-title {
        font-size: 40px;
        font-weight: 900;
        line-height: 1.2;
        letter-spacing: -0.02em;
        color: var(--text);
    }
    .page-subtitle {
        margin-top: 14px;
        font-size: 16px;
        color: var(--text-muted);
        max-width: 720px;
        line-height: 1.8;
    }
    @media (max-width: 768px) {
        .page-title {
            font-size: 30px;
        }
        .page-hero {
            padding: 40px 0 32px;
        }
    }

    /* ===== Section ===== */
    .section {
        padding: 80px 0;
    }
    @media (max-width: 768px) {
        .section {
            padding: 48px 0;
        }
    }
    .section-dark {
        background: var(--dark);
    }
    .section-white {
        background: #fff;
    }
    .section-muted {
        background: var(--bg);
    }
    .section-title {
        font-size: 30px;
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -0.01em;
        color: var(--text);
        text-align: center;
    }
    .section-subtitle {
        max-width: 640px;
        margin: 12px auto 0;
        text-align: center;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.75;
    }
    .section-head {
        max-width: 680px;
        margin-bottom: 48px;
    }
    .section-head.left {
        margin-left: 0;
    }
    @media (max-width: 768px) {
        .section-title {
            font-size: 24px;
        }
        .section-head {
            margin-bottom: 32px;
        }
    }

    /* ===== Feature Split ===== */
    .split-wrap {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 56px;
        align-items: center;
    }
    @media (max-width: 768px) {
        .split-wrap {
            grid-template-columns: 1fr;
            gap: 28px;
        }
    }
    .split-media {
        border-radius: 16px;
        overflow: hidden;
        border: 1px solid rgba(14, 122, 95, 0.15);
        background: #fff;
        box-shadow: var(--shadow-card);
        position: relative;
    }
    .split-media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .feature-list {
        margin-top: 20px;
        display: grid;
        gap: 12px;
    }
    .feature-item {
        display: flex;
        gap: 12px;
        align-items: flex-start;
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
    }
    .feature-item .dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--signal);
        margin-top: 8px;
        flex-shrink: 0;
    }

    /* ===== Grid Cards ===== */
    .card-grid {
        display: grid;
        grid-template-columns: repeat(12, 1fr);
        gap: 24px;
    }
    .card-large {
        grid-column: span 7;
    }
    .card-small {
        grid-column: span 5;
    }
    @media (max-width: 767px) {
        .card-large,
        .card-small {
            grid-column: span 12;
        }
    }
    .component-card {
        padding: 28px;
        position: relative;
        overflow: hidden;
    }
    .component-card .card-title {
        font-size: 19px;
        font-weight: 700;
        margin-top: 16px;
        color: var(--text);
    }
    .component-card .card-text {
        margin-top: 8px;
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.75;
    }
    .component-card .card-tag {
        position: absolute;
        top: 24px;
        right: 24px;
        font-size: 12px;
        font-weight: 500;
        color: var(--brand);
        background: rgba(14, 122, 95, 0.08);
        padding: 3px 10px;
        border-radius: 999px;
    }
    @media (max-width: 640px) {
        .component-card {
            padding: 22px;
        }
        .component-card .card-title {
            font-size: 17px;
        }
    }

    /* ===== Table ===== */
    .table-wrap {
        overflow-x: auto;
        border-radius: var(--radius);
    }
    .compare-table {
        width: 100%;
        border-collapse: separate;
        border-spacing: 0;
        font-size: 14px;
        min-width: 560px;
    }
    .compare-table th,
    .compare-table td {
        padding: 16px 18px;
        text-align: left;
        border-bottom: 1px solid var(--border);
    }
    .compare-table th {
        background: #F7F6F3;
        font-weight: 600;
        color: var(--text);
        font-size: 13px;
        letter-spacing: 0.02em;
    }
    .compare-table tr:last-child td {
        border-bottom: none;
    }
    .compare-table td {
        color: var(--text-muted);
        line-height: 1.7;
    }
    .compare-table .col-brand {
        color: var(--brand);
        font-weight: 600;
    }
    .compare-table .highlight {
        color: var(--text);
        font-weight: 500;
    }

    /* ===== Related ===== */
    .related-wrap {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        justify-content: center;
    }

    /* ===== CTA ===== */
    .cta-band {
        border-radius: 24px;
        background: var(--dark);
        padding: 72px 48px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-band::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image: radial-gradient(rgba(45, 212, 191, 0.14) 1px, transparent 1px);
        background-size: 28px 28px;
        pointer-events: none;
    }
    .cta-band .accent-line {
        width: 40px;
        height: 3px;
        background: var(--accent);
        border-radius: 4px;
        margin: 0 auto 20px;
    }
    .cta-band h2 {
        font-size: 30px;
        font-weight: 800;
        color: #fff;
        line-height: 1.3;
        margin-bottom: 12px;
        position: relative;
        z-index: 1;
    }
    .cta-band p {
        color: rgba(255, 255, 255, 0.7);
        font-size: 15px;
        max-width: 480px;
        margin: 0 auto 28px;
        line-height: 1.8;
        position: relative;
        z-index: 1;
    }
    .cta-actions {
        display: flex;
        gap: 12px;
        justify-content: center;
        flex-wrap: wrap;
        position: relative;
        z-index: 1;
    }
    @media (max-width: 640px) {
        .cta-band {
            padding: 48px 24px;
            border-radius: 16px;
        }
        .cta-band h2 {
            font-size: 24px;
        }
        .cta-actions .btn {
            width: 100%;
        }
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 72px 0 0;
        margin-top: 80px;
    }
    .site-footer .container {
        max-width: 1280px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }
    @media (min-width: 1024px) {
        .site-footer .container {
            padding-left: 32px;
            padding-right: 32px;
        }
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 56px;
    }
    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }
    @media (max-width: 640px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
    }
    .footer-brand a {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 18px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 14px;
    }
    .footer-desc {
        font-size: 13px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.6);
        margin-bottom: 20px;
        max-width: 300px;
    }
    .footer-social {
        display: flex;
        gap: 10px;
    }
    .footer-social a {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(255, 255, 255, 0.7);
        transition: all 0.2s ease;
    }
    .footer-social a:hover {
        border-color: var(--brand);
        color: #fff;
        background: var(--brand);
    }
    .site-footer h4 {
        font-size: 14px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 16px;
    }
    .f-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .f-links a {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.6);
        transition: all 0.2s ease;
    }
    .f-links a:hover {
        color: var(--signal);
        padding-left: 4px;
    }
    .f-contact {
        display: flex;
        flex-direction: column;
        gap: 8px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.6);
        line-height: 1.7;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding: 20px 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
    }
    @media (max-width: 640px) {
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }

    /* ===== Misc ===== */
    .section-gap {
        height: 1px;
        background: var(--border);
    }
    .num-big {
        font-family: "SF Mono", "JetBrains Mono", monospace;
        font-size: 36px;
        font-weight: 800;
        font-variant-numeric: tabular-nums;
        color: var(--brand);
        line-height: 1.2;
        letter-spacing: -0.02em;
    }
    .text-muted {
        color: var(--text-muted);
    }
    @media (max-width: 640px) {
        .num-big {
            font-size: 28px;
        }
    }
    /* focus visible for a */
    a:focus-visible,
    button:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
        border-radius: 4px;
    }

/* roulang page: article */
:root{
    --brand:#0E7A5F;--brand-dark:#095C47;--accent:#C9822D;--signal:#2DD4BF;
    --bg:#F7F6F3;--dark:#16211E;--card:#FFFFFF;--text:#1F2A26;--muted:#5C6B64;
    --border:#E4E2DC;--error:#DC2626;--radius:12px;--radius-lg:16px;--radius-full:999px;
    --shadow-sm:0 1px 3px rgba(22,33,30,0.06);--shadow-lg:0 12px 32px rgba(22,33,30,0.10);
    --font-sans:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    --font-mono:"SF Mono","JetBrains Mono",monospace;
  }
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;}
  img{max-width:100%;height:auto;display:block;}
  a{color:inherit;text-decoration:none;transition:color .2s ease;}
  button{font-family:inherit;cursor:pointer;border:none;background:none;}
  .container{max-width:1280px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media(min-width:768px){.container{padding-left:32px;padding-right:32px;}}

  .site-header{position:sticky;top:0;z-index:50;background:rgba(247,246,243,0.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);}
  .header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px;}
  .brand-logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px;color:var(--text);letter-spacing:-0.01em;}
  .brand-logo:hover{color:var(--brand);}
  .brand-logo .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 2px 8px rgba(14,122,95,0.25);}
  .main-nav{display:flex;align-items:center;gap:2px;}
  .main-nav .nav-link{display:inline-block;padding:8px 14px;border-radius:var(--radius-full);font-size:14px;font-weight:600;color:var(--text);transition:background .2s,color .2s;}
  .main-nav .nav-link:hover{background:rgba(14,122,95,0.08);color:var(--brand);}
  .main-nav .nav-link.active{background:rgba(14,122,95,0.12);color:var(--brand);}
  .header-actions{display:flex;align-items:center;gap:10px;}
  .search-box{display:flex;align-items:center;gap:8px;background:#EFEEE9;border:1px solid var(--border);border-radius:8px;padding:0 12px;height:38px;width:200px;transition:border-color .2s,box-shadow .2s;}
  .search-box:hover{border-color:var(--brand);}
  .search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,122,95,0.15);}
  .search-box .search-placeholder{flex:1;font-size:13px;color:var(--muted);}
  .search-box kbd{font-family:var(--font-mono);font-size:11px;background:#fff;border:1px solid var(--border);border-radius:4px;padding:1px 5px;color:var(--muted);}
  .icon-btn{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text);transition:background .2s,color .2s;}
  .icon-btn:hover{background:rgba(14,122,95,0.10);color:var(--brand);}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:600;transition:all .2s ease;border:1px solid transparent;}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(14,122,95,0.2);}
  .btn-primary:hover{background:var(--brand-dark);box-shadow:0 4px 14px rgba(14,122,95,0.25);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-primary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .btn-outline{background:transparent;border-color:var(--border);color:var(--text);}
  .btn-outline:hover{border-color:var(--brand);color:var(--brand);}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:#b06d22;box-shadow:0 4px 16px rgba(201,130,45,0.25);transform:translateY(-1px);}
  .btn-accent:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .btn-lg{padding:14px 28px;font-size:15px;border-radius:10px;}
  .header-cta{padding:8px 18px;font-size:13px;}
  .hamburger{display:none;width:38px;height:38px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:8px;}
  .hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .3s,opacity .3s;}
  .hamburger:hover{background:rgba(14,122,95,0.08);}

  .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:6px;padding-top:18px;padding-bottom:6px;font-size:13px;color:var(--muted);}
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{margin:0 2px;color:var(--border);}
  .breadcrumb .current{color:var(--text);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:320px;}

  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;padding-top:20px;padding-bottom:80px;}
  .article-main{min-width:0;}
  .article-head{margin-bottom:20px;}
  .article-cat{display:inline-block;background:rgba(14,122,95,0.10);color:var(--brand);font-size:12px;font-weight:700;padding:4px 14px;border-radius:var(--radius-full);margin-bottom:14px;}
  .article-title{font-size:34px;font-weight:900;line-height:1.25;letter-spacing:-0.02em;color:var(--text);margin-bottom:16px;}
  .article-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--muted);align-items:center;}
  .meta-item{display:inline-flex;align-items:center;gap:5px;}
  .meta-dot{width:3px;height:3px;border-radius:50%;background:var(--border);display:inline-block;}
  .post-cover{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);margin-bottom:24px;box-shadow:var(--shadow-sm);}
  .post-cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;}

  .article-body{max-width:720px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--text);}
  .article-body h2{font-size:26px;font-weight:800;line-height:1.3;margin-top:40px;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--border);scroll-margin-top:90px;}
  .article-body h3{font-size:20px;font-weight:700;margin-top:28px;margin-bottom:12px;}
  .article-body h4{font-size:17px;font-weight:700;margin-top:20px;margin-bottom:10px;}
  .article-body p{margin-bottom:1.5em;color:var(--text);}
  .article-body ul,.article-body ol{margin-bottom:1.5em;padding-left:24px;}
  .article-body li{margin-bottom:10px;}
  .article-body ul li::marker{color:var(--brand);}
  .article-body ol li::marker{color:var(--brand);font-weight:600;}
  .article-body blockquote{border-left:4px solid var(--brand);background:rgba(14,122,95,0.06);padding:16px 20px;border-radius:0 8px 8px 0;margin-bottom:1.5em;color:var(--muted);font-style:normal;}
  .article-body blockquote p{margin-bottom:0;}
  .article-body a{color:var(--brand);border-bottom:1px solid rgba(14,122,95,0.3);}
  .article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
  .article-body table{width:100%;border-collapse:collapse;margin-bottom:1.8em;font-size:15px;}
  .article-body table th,.article-body table td{border:1px solid var(--border);padding:10px 14px;text-align:left;}
  .article-body table th{background:#EFEEE9;font-weight:700;color:var(--text);}
  .article-body table tr:hover td{background:rgba(14,122,95,0.03);}
  .article-body img{border-radius:12px;margin:16px 0;}
  .article-body code{font-family:var(--font-mono);background:#EFEEE9;padding:2px 6px;border-radius:4px;font-size:14px;}

  .post-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px;padding-top:24px;border-top:1px solid var(--border);}
  .tag{display:inline-block;background:#EFEEE9;color:var(--muted);font-size:13px;font-weight:500;padding:4px 12px;border-radius:var(--radius-full);transition:background .2s,color .2s;}
  .tag:hover{background:rgba(14,122,95,0.10);color:var(--brand);}

  .post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
  .post-nav-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;transition:box-shadow .2s,border-color .2s;min-height:72px;display:flex;flex-direction:column;justify-content:center;gap:6px;}
  .post-nav-item:hover{border-color:rgba(14,122,95,0.3);box-shadow:var(--shadow-lg);}
  .post-nav-item.has-link:hover{transform:translateY(-2px);}
  .post-nav-item.text-right{text-align:right;align-items:flex-end;}
  .post-nav-label{font-size:12px;color:var(--muted);font-weight:500;}
  .post-nav-title{font-size:15px;font-weight:600;color:var(--text);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .post-nav-item.has-link:hover .post-nav-title{color:var(--brand);}

  .related-posts{margin-top:44px;}
  .related-posts h3{font-size:22px;font-weight:800;margin-bottom:20px;position:relative;padding-left:14px;}
  .related-posts h3::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:20px;border-radius:2px;background:var(--brand);}
  .related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .related-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;transition:box-shadow .2s,border-color .2s,transform .2s;display:flex;flex-direction:column;}
  .related-card:hover{border-color:rgba(14,122,95,0.3);box-shadow:var(--shadow-lg);transform:translateY(-2px);}
  .related-card .related-cat{font-size:11px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:0.04em;margin-bottom:8px;}
  .related-card h4{font-size:14px;font-weight:700;line-height:1.5;margin-bottom:10px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .related-card:hover h4{color:var(--brand);}
  .related-date{font-size:12px;color:var(--muted);}

  .back-link{display:inline-flex;align-items:center;gap:6px;margin-top:36px;font-size:14px;font-weight:600;color:var(--muted);transition:color .2s,gap .2s;}
  .back-link:hover{color:var(--brand);gap:10px;}
  .back-link svg{transition:transform .2s;}

  .article-sidebar{display:flex;flex-direction:column;gap:20px;}
  .sidebar-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow-sm);}
  .toc-card h3{font-size:16px;font-weight:800;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
  .toc-card h3 .toc-icon{color:var(--brand);}
  .toc-list{list-style:none;padding:0;max-height:360px;overflow-y:auto;}
  .toc-list li{border-left:2px solid var(--border);margin-bottom:2px;}
  .toc-list li a{display:block;padding:7px 12px;font-size:13px;color:var(--muted);transition:background .2s,color .2s,border-color .2s;}
  .toc-list li a:hover{background:rgba(14,122,95,0.05);color:var(--brand);}
  .toc-list li a.active{color:var(--brand);font-weight:600;}
  .cta-card{background:var(--dark);border-color:transparent;color:#fff;text-align:left;position:relative;overflow:hidden;}
  .cta-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent);}
  .cta-card h3{font-size:18px;font-weight:800;margin-bottom:10px;color:#fff;}
  .cta-card p{font-size:13px;line-height:1.7;color:rgba(255,255,255,0.75);margin-bottom:16px;}
  .cta-card .btn{width:100%;}

  .article-empty{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:60px 30px;text-align:center;box-shadow:var(--shadow-sm);}
  .article-empty .empty-icon{width:56px;height:56px;border-radius:50%;background:rgba(14,122,95,0.08);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;color:var(--brand);}
  .article-empty h2{font-size:24px;font-weight:800;margin-bottom:12px;}
  .article-empty p{color:var(--muted);font-size:15px;margin-bottom:20px;}

  .site-footer{background:var(--dark);color:rgba(255,255,255,0.75);padding:64px 0 0;margin-top:80px;}
  .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,0.08);}
  .footer-brand a{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:900;color:#fff;margin-bottom:16px;}
  .footer-brand a:hover{color:var(--signal);}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,0.6);margin-bottom:20px;max-width:300px;}
  .footer-social{display:flex;gap:8px;}
  .footer-social a{width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,0.2);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.7);transition:all .2s;}
  .footer-social a:hover{border-color:var(--brand);color:#fff;background:rgba(14,122,95,0.3);}
  .site-footer h4{font-size:15px;font-weight:800;color:#fff;margin-bottom:16px;}
  .f-links{display:flex;flex-direction:column;gap:10px;}
  .f-links a{font-size:14px;color:rgba(255,255,255,0.6);transition:color .2s,padding-left .2s;}
  .f-links a:hover{color:#fff;padding-left:4px;}
  .footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:28px 0 32px;font-size:13px;color:rgba(255,255,255,0.4);}
  .footer-bottom a{color:rgba(255,255,255,0.5);}
  .footer-bottom a:hover{color:#fff;}

  @media(max-width:1023px){
    .header-inner{gap:16px;}
    .main-nav{display:none;}
    .search-box{width:140px;}
    .header-actions .icon-btn{display:none;}
    .hamburger{display:flex;}
    .main-nav.open{display:flex;flex-direction:column;position:absolute;top:68px;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--border);padding:16px 20px;gap:4px;box-shadow:0 12px 32px rgba(22,33,30,0.08);}
    .article-layout{grid-template-columns:1fr;}
    .article-sidebar{display:none;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .related-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media(max-width:767px){
    .header-inner{height:60px;}
    .brand-logo{font-size:18px;}
    .search-box{display:none;}
    .article-title{font-size:26px;}
    .post-cover{border-radius:12px;}
    .post-nav{grid-template-columns:1fr;}
    .post-nav-item.text-right{text-align:left;align-items:flex-start;}
    .related-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .article-body{font-size:16px;}
    .article-main{padding-top:10px;}
    .breadcrumb .current{max-width:220px;}
  }
  @media(max-width:520px){
    .header-cta{padding:7px 12px;font-size:12px;}
    .brand-logo .brand-mark{width:30px;height:30px;}
    .article-title{font-size:23px;line-height:1.3;}
    .article-meta{flex-direction:column;gap:6px;align-items:flex-start;}
  }

/* roulang page: category2 */
:root {
      --brand: #0E7A5F;
      --brand-dark: #095C47;
      --accent: #C9822D;
      --signal: #2DD4BF;
      --bg: #F7F6F3;
      --card: #FFFFFF;
      --text: #1F2A26;
      --text-secondary: #5C6B64;
      --border: #E4E2DC;
      --radius: 12px;
      --shadow: 0 1px 3px rgba(22, 33, 30, 0.06);
      --shadow-hover: 0 12px 32px rgba(22, 33, 30, 0.10);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease;
    }

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
      gap: 16px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-badge {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      background: var(--brand);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-link {
      padding: 8px 14px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text);
      transition: all .2s ease;
    }

    .nav-link:hover {
      background: #f0efe9;
      color: var(--brand);
    }

    .nav-link.active {
      background: rgba(14, 122, 95, 0.10);
      color: var(--brand);
      font-weight: 600;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .command-search {
      display: flex;
      align-items: center;
      gap: 6px;
      height: 38px;
      padding: 0 12px;
      background: #f3f2ee;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 13px;
      color: var(--text-secondary);
      width: 200px;
      transition: border-color .2s ease, box-shadow .2s ease;
      cursor: text;
    }

    .command-search:hover {
      border-color: var(--brand);
    }

    .command-search:focus-within {
      border-color: var(--brand);
      box-shadow: 0 0 0 3px rgba(14, 122, 95, 0.12);
    }

    .cmd-k {
      margin-left: auto;
      font-size: 11px;
      font-weight: 600;
      color: var(--text-secondary);
      background: #eae8e2;
      border-radius: 4px;
      padding: 2px 6px;
      font-family: "SF Mono", "JetBrains Mono", monospace;
      letter-spacing: 0.02em;
    }

    .icon-btn {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text);
      border: 1px solid transparent;
      transition: all .2s ease;
    }

    .icon-btn:hover {
      background: rgba(14, 122, 95, 0.08);
      color: var(--brand);
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--brand);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: 8px;
      border: 1px solid transparent;
      transition: all .2s ease;
      white-space: nowrap;
      cursor: pointer;
    }

    .btn-primary:hover {
      background: var(--brand-dark);
      box-shadow: 0 4px 16px rgba(14, 122, 95, 0.24);
      transform: translateY(-1px);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: none;
    }

    .btn-primary:focus-visible,
    .btn-secondary:focus-visible,
    .nav-link:focus-visible,
    .icon-btn:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: #fff;
      color: var(--text);
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: 8px;
      border: 1px solid var(--border);
      transition: all .2s ease;
      white-space: nowrap;
      cursor: pointer;
    }

    .btn-secondary:hover {
      border-color: var(--brand);
      color: var(--brand);
    }

    .btn-accent {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--accent);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: 8px;
      border: 1px solid transparent;
      transition: all .2s ease;
      white-space: nowrap;
      cursor: pointer;
    }

    .btn-accent:hover {
      background: #b87322;
      box-shadow: 0 4px 20px rgba(201, 130, 45, 0.28);
      transform: translateY(-1px);
    }

    /* 汉堡按钮 */
    .hamburger {
      display: none;
      width: 40px;
      height: 40px;
      border-radius: 8px;
      align-items: center;
      justify-content: center;
      color: var(--text);
      border: 1px solid var(--border);
      background: #fff;
      cursor: pointer;
    }

    .mobile-menu {
      display: none;
      flex-direction: column;
      padding: 12px 16px 20px;
      border-top: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(12px);
    }

    .mobile-menu.open {
      display: flex;
    }

    .mobile-menu .nav-link {
      padding: 12px 14px;
      border-radius: 8px;
      font-size: 15px;
    }

    /* ===== Hero ===== */
    .page-hero {
      background: var(--bg);
      position: relative;
      overflow: hidden;
      padding: 56px 0 64px;
      border-bottom: 1px solid var(--border);
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: radial-gradient(circle, rgba(14, 122, 95, 0.05) 1px, transparent 1px);
      background-size: 28px 28px;
      pointer-events: none;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 28px;
    }

    .breadcrumb a {
      color: var(--text-secondary);
    }

    .breadcrumb a:hover {
      color: var(--brand);
    }

    .breadcrumb .sep {
      color: #b5b1a8;
    }

    .breadcrumb .current {
      color: var(--text);
      font-weight: 500;
    }

    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -0.02em;
      color: var(--text);
      margin-bottom: 16px;
    }

    .hero-desc {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 680px;
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .hero-badges {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-top: 8px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-secondary);
      background: #fff;
      padding: 8px 16px;
      border-radius: 999px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .hero-badge i {
      color: var(--brand);
      font-size: 12px;
    }

    /* ===== Section common ===== */
    .section {
      padding: 80px 0;
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      color: var(--brand);
      letter-spacing: 0.04em;
      text-transform: uppercase;
      background: rgba(14, 122, 95, 0.08);
      padding: 6px 14px;
      border-radius: 999px;
      margin-bottom: 16px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      color: var(--text);
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 680px;
      line-height: 1.8;
      margin-bottom: 40px;
    }

    .text-center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: #fff;
      border-bottom: 1px solid var(--border);
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: 1fr 1.8fr;
      gap: 48px;
      align-items: start;
    }

    .faq-intro .section-title {
      margin-bottom: 16px;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 0;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow);
    }

    .faq-item {
      border-bottom: 1px solid var(--border);
      transition: background .2s ease;
    }

    .faq-item:last-child {
      border-bottom: none;
    }

    .faq-item.active {
      background: rgba(14, 122, 95, 0.03);
    }

    .faq-q {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      cursor: pointer;
      transition: color .2s ease;
      width: 100%;
      text-align: left;
      background: transparent;
    }

    .faq-q:hover {
      color: var(--brand);
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(14, 122, 95, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: var(--brand);
      transition: transform .3s ease;
      flex-shrink: 0;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--brand);
      color: #fff;
    }

    .faq-a {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 20px;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .faq-item.active .faq-a {
      max-height: 400px;
      padding: 0 20px 20px;
    }

    /* ===== Checklist ===== */
    .checklist-section {
      background: var(--bg);
    }

    .checklist-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .checklist-img-wrap {
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .checklist-img-wrap img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    .checklist-cols {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .checklist-col h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 4px;
      color: var(--text);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .checklist-col .sub {
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 16px;
      border-bottom: 1px solid var(--border);
      padding-bottom: 12px;
    }

    .checklist {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .checklist li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--text);
      line-height: 1.6;
    }

    .checklist li i {
      color: var(--brand);
      font-size: 13px;
      margin-top: 4px;
      flex-shrink: 0;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: rgba(14, 122, 95, 0.10);
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* ===== Banner ===== */
    .banner-section {
      padding: 0;
    }

    .banner-box {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      background-image: url('/assets/images/coverpic/cover-8.png');
      background-size: cover;
      background-position: center;
      min-height: 420px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
    }

    .banner-box::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(22, 33, 30, 0.72);
      backdrop-filter: blur(2px);
    }

    .banner-content {
      position: relative;
      z-index: 2;
      padding: 56px 24px;
      max-width: 680px;
    }

    .banner-content h2 {
      color: #fff;
      font-size: 30px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }

    .banner-content p {
      color: rgba(255, 255, 255, 0.88);
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .banner-content .btn-group {
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .btn-white {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      color: var(--text);
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: 8px;
      border: 1px solid rgba(255, 255, 255, 0.4);
      transition: all .2s ease;
    }

    .btn-white:hover {
      background: rgba(255, 255, 255, 0.88);
      transform: translateY(-1px);
    }

    /* ===== Cross Links ===== */
    .cross-section {
      background: #fff;
      border-bottom: 1px solid var(--border);
    }

    .cross-wrap {
      text-align: center;
    }

    .cross-links {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 8px;
    }

    .cross-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: 999px;
      background: var(--bg);
      border: 1px solid var(--border);
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
      transition: all .2s ease;
    }

    .cross-link:hover {
      background: var(--brand);
      border-color: var(--brand);
      color: #fff;
      box-shadow: 0 6px 20px rgba(14, 122, 95, 0.22);
    }

    .cross-link i {
      font-size: 12px;
      opacity: 0.7;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--bg);
      padding: 72px 0 96px;
    }

    .cta-box {
      background: var(--night);
      border-radius: 24px;
      padding: 64px 48px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-box::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 80% 20%, rgba(201, 130, 45, 0.16), transparent 40%),
        radial-gradient(circle at 10% 80%, rgba(45, 212, 191, 0.08), transparent 40%);
      pointer-events: none;
    }

    .cta-box .accent-line {
      width: 48px;
      height: 4px;
      background: var(--accent);
      border-radius: 2px;
      margin: 0 auto 24px;
    }

    .cta-box h2 {
      color: #fff;
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .cta-box p {
      color: rgba(255, 255, 255, 0.80);
      font-size: 15px;
      line-height: 1.8;
      max-width: 560px;
      margin: 0 auto 32px;
    }

    .cta-box .btn-group {
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
      position: relative;
      z-index: 2;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--night);
      color: rgba(255, 255, 255, 0.70);
      padding: 64px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 48px;
      padding-bottom: 48px;
    }

    .footer-brand .brand-logo {
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-desc {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.55);
      max-width: 320px;
      margin-bottom: 20px;
    }

    .footer-social {
      display: flex;
      gap: 10px;
    }

    .footer-social a {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      border: 1px solid rgba(255, 255, 255, 0.20);
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(255, 255, 255, 0.60);
      transition: all .2s ease;
    }

    .footer-social a:hover {
      background: var(--brand);
      border-color: var(--brand);
      color: #fff;
    }

    .site-footer h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 18px;
    }

    .f-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .f-links a {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.60);
      transition: color .2s ease, padding-left .2s ease;
    }

    .f-links a:hover {
      color: var(--signal);
      padding-left: 4px;
    }

    .contact-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      list-style: none;
    }

    .contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.60);
      line-height: 1.6;
    }

    .contact-list li i {
      color: var(--signal);
      margin-top: 3px;
      font-size: 14px;
      width: 16px;
      text-align: center;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.10);
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.45);
      flex-wrap: wrap;
      gap: 8px;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1023px) {
      .main-nav {
        display: none;
      }
      .command-search {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .header-actions .btn-primary {
        display: none;
      }
      .faq-wrap {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .checklist-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
    }

    @media (max-width: 767px) {
      .section {
        padding: 56px 0;
      }
      .hero-title {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .checklist-cols {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .banner-box {
        min-height: 360px;
      }
      .banner-content h2 {
        font-size: 24px;
      }
      .cta-box {
        padding: 48px 24px;
      }
      .cta-box h2 {
        font-size: 26px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .hero-badge {
        font-size: 12px;
        padding: 6px 12px;
      }
      .cross-links {
        gap: 10px;
      }
      .cross-link {
        padding: 10px 18px;
        font-size: 13px;
      }
      .btn-group {
        flex-direction: column;
        width: 100%;
      }
      .btn-group .btn-primary,
      .btn-group .btn-secondary,
      .btn-group .btn-accent,
      .btn-group .btn-white {
        width: 100%;
      }
    }

/* roulang page: category3 */
:root {
    --brand: #0E7A5F;
    --brand-dark: #095C47;
    --copper: #C9822D;
    --signal: #2DD4BF;
    --bg: #F7F6F3;
    --ink: #1F2A26;
    --ink-muted: #5C6B64;
    --card: #FFFFFF;
    --line: #E4E2DC;
    --deep: #16211E;
    --radius: 12px;
    --radius-lg: 24px;
    --shadow-sm: 0 1px 3px rgba(22,33,30,0.06);
    --shadow-md: 0 4px 20px rgba(22,33,30,0.10);
    --shadow-lg: 0 12px 32px rgba(22,33,30,0.10);
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--ink);
    line-height: 1.75;
    font-size: 16px;
  }
  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
  }
  @media (min-width: 768px) {
    .container { padding: 0 32px; }
  }
  img { max-width: 100%; height: auto; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; }

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(247, 246, 243, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    height: 68px;
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 16px;
  }
  .brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: -0.02em;
    color: var(--ink);
    white-space: nowrap;
  }
  .logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .nav-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-muted);
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
  }
  .nav-link:hover {
    color: var(--brand);
    background: rgba(14, 122, 95, 0.08);
  }
  .nav-link.active {
    color: var(--brand);
    background: rgba(14, 122, 95, 0.10);
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .search-box {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 180px;
    height: 38px;
    padding: 0 12px;
    background: #F0EFEA;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink-muted);
    font-size: 13px;
    transition: border-color 0.2s, box-shadow 0.2s;
  }
  .search-box:hover {
    border-color: var(--brand);
  }
  .search-box kbd {
    margin-left: auto;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 1px 6px;
    font-size: 11px;
    font-family: "SF Mono", "JetBrains Mono", monospace;
    color: #8A938C;
  }
  .icon-btn {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink-muted);
    transition: all 0.2s;
  }
  .icon-btn:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: rgba(14, 122, 95, 0.04);
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 20px;
    background: var(--brand);
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
  }
  .btn-primary:hover {
    background: var(--brand-dark);
    box-shadow: 0 4px 12px rgba(14, 122, 95, 0.25);
    transform: translateY(-1px);
  }
  .btn-primary:active {
    transform: translateY(0);
  }
  .btn-primary:focus-visible,
  .btn-secondary:focus-visible {
    outline: 2px solid var(--copper);
    outline-offset: 2px;
  }
  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 20px;
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
  }
  .btn-secondary:hover {
    border-color: var(--brand);
    color: var(--brand);
  }
  .btn-copper {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 44px;
    padding: 0 28px;
    background: var(--copper);
    color: #fff;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 20px rgba(201, 130, 45, 0.25);
  }
  .btn-copper:hover {
    background: #B06D1F;
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(201, 130, 45, 0.3);
  }
  .btn-ghost-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 44px;
    padding: 0 28px;
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
  }
  .btn-ghost-white:hover {
    background: rgba(255,255,255,0.08);
    border-color: #fff;
  }
  .menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: #fff;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--ink);
  }
  .mobile-drawer {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 20px;
    z-index: 49;
    box-shadow: var(--shadow-md);
  }
  .mobile-drawer.open { display: block; }
  .mobile-drawer a {
    display: block;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
  }
  .mobile-drawer a:hover {
    background: rgba(14, 122, 95, 0.08);
    color: var(--brand);
  }
  .mobile-drawer a.active {
    background: rgba(14, 122, 95, 0.10);
    color: var(--brand);
  }

  /* ===== Breadcrumb ===== */
  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--ink-muted);
    flex-wrap: wrap;
  }
  .breadcrumb a:hover { color: var(--brand); }
  .breadcrumb .sep { color: #A8A29A; }

  /* ===== Page Hero ===== */
  .page-hero {
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 48px 0 56px;
    position: relative;
    overflow: hidden;
  }
  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(14,122,95,0.06) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
  }
  .hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
    position: relative;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(14, 122, 95, 0.08);
    border: 1px solid rgba(14, 122, 95, 0.15);
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand);
  }
  .page-hero h1 {
    font-size: 44px;
    line-height: 1.15;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin: 18px 0 16px;
    color: var(--ink);
  }
  .page-hero p {
    font-size: 16px;
    line-height: 1.85;
    color: var(--ink-muted);
    max-width: 540px;
  }
  .hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 28px;
  }
  .hero-media {
    position: relative;
  }
  .hero-media img {
    border-radius: 16px;
    border: 1px solid rgba(14, 122, 95, 0.25);
    box-shadow: var(--shadow-lg);
    width: 100%;
    object-fit: cover;
  }
  .hero-media-float {
    position: absolute;
    bottom: -20px;
    left: 24px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
    font-size: 13px;
  }
  .hero-float-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--brand);
    box-shadow: 0 0 0 4px rgba(14, 122, 95, 0.15);
  }

  /* ===== Badges ===== */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(14, 122, 95, 0.08);
    color: var(--brand);
    border: 1px solid rgba(14, 122, 95, 0.15);
    white-space: nowrap;
  }
  .badge-copper {
    background: rgba(201, 130, 45, 0.08);
    color: var(--copper);
    border-color: rgba(201, 130, 45, 0.2);
  }

  /* ===== Section ===== */
  .section { padding: 72px 0; }
  .section-sm { padding: 56px 0; }
  .section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--copper);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 12px;
  }
  .section-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 16px;
  }
  .section-desc {
    font-size: 16px;
    color: var(--ink-muted);
    max-width: 640px;
    line-height: 1.8;
  }

  /* ===== Process Flow ===== */
  .process-section {
    background: var(--deep);
    position: relative;
    overflow: hidden;
  }
  .process-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
  }
  .process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 48px;
    position: relative;
  }
  .process-item {
    padding: 0 32px;
    position: relative;
    border-right: 1px solid rgba(255,255,255,0.10);
  }
  .process-item:last-child { border-right: none; }
  .process-num {
    font-family: "SF Mono", "JetBrains Mono", monospace;
    font-size: 14px;
    font-weight: 700;
    color: var(--copper);
    letter-spacing: 0.05em;
  }
  .process-item h3 {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin: 14px 0 10px;
  }
  .process-item p {
    color: rgba(255,255,255,0.65);
    font-size: 14px;
    line-height: 1.75;
  }
  .process-arrow {
    position: absolute;
    right: -12px;
    top: 30px;
    color: var(--copper);
    font-size: 18px;
    z-index: 2;
  }
  .process-item:last-child .process-arrow { display: none; }

  /* ===== Case List ===== */
  .case-list {
    display: flex;
    flex-direction: column;
    margin-top: 40px;
  }
  .case-item {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 40px;
    padding: 32px 0;
    border-bottom: 1px solid var(--line);
    align-items: start;
  }
  .case-item:first-child { border-top: 1px solid var(--line); }
  .case-year {
    font-family: "SF Mono", "JetBrains Mono", monospace;
    font-size: 32px;
    font-weight: 800;
    color: var(--brand);
    letter-spacing: -0.02em;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .case-year small {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-muted);
  }
  .case-body h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--ink);
  }
  .case-body p {
    font-size: 15px;
    color: var(--ink-muted);
    line-height: 1.8;
    max-width: 640px;
  }
  .case-tags {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
  }

  /* ===== Badge Wall ===== */
  .badge-wall {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 40px;
    justify-content: center;
  }
  .wall-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
  }
  .wall-badge i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand);
    display: inline-block;
    flex-shrink: 0;
  }
  .wall-badge:hover {
    border-color: var(--brand);
    color: var(--brand);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }

  /* ===== Cross Links ===== */
  .cross-links {
    margin-top: 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }
  .cross-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1px solid var(--line);
    padding: 10px 22px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
  }
  .cross-link:hover {
    border-color: var(--brand);
    color: var(--brand);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  .cross-link .arrow {
    transition: transform 0.2s;
  }
  .cross-link:hover .arrow {
    transform: translateX(3px);
  }

  /* ===== CTA ===== */
  .cta-section {
    padding: 80px 0;
  }
  .cta-box {
    background: var(--deep);
    border-radius: 24px;
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .cta-box::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
  }
  .cta-box .copper-line {
    width: 60px;
    height: 3px;
    background: var(--copper);
    border-radius: 4px;
    margin: 0 auto 20px;
  }
  .cta-box h2 {
    font-size: 34px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
  }
  .cta-box p {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    max-width: 480px;
    margin: 0 auto 28px;
    line-height: 1.8;
  }
  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--deep);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 28px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
  }
  .footer-brand a {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
  }
  .footer-brand .footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
    max-width: 320px;
  }
  .footer-social {
    display: flex;
    gap: 10px;
    margin-top: 20px;
  }
  .footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    transition: all 0.2s;
  }
  .footer-social a:hover {
    border-color: var(--brand);
    color: var(--brand);
  }
  .site-footer h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
  }
  .f-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .f-links a {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    transition: color 0.2s;
  }
  .f-links a:hover { color: var(--brand); }
  .f-contact p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.10);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
  }

  /* ===== Responsive ===== */
  @media (max-width: 1023px) {
    .main-nav { display: none; }
    .header-actions .search-box { display: none; }
    .menu-toggle { display: inline-flex; }
    .hero-inner {
      grid-template-columns: 1fr;
      gap: 36px;
    }
    .page-hero { padding: 40px 0 48px; }
    .process-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 32px 0;
    }
    .process-item {
      border-right: none;
      padding: 0 20px;
    }
    .process-item:nth-child(2) { border-right: none; }
    .process-arrow { display: none; }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }
  }
  @media (max-width: 640px) {
    .site-header { height: 60px; }
    .header-inner { height: 60px; }
    .mobile-drawer { top: 60px; }
    .page-hero h1 { font-size: 32px; }
    .section { padding: 48px 0; }
    .section-title { font-size: 26px; }
    .process-grid { grid-template-columns: 1fr; }
    .case-item {
      grid-template-columns: 1fr;
      gap: 16px;
    }
    .case-year {
      font-size: 24px;
      flex-direction: row;
      align-items: baseline;
      gap: 12px;
    }
    .cta-box { padding: 40px 24px; }
    .cta-box h2 { font-size: 26px; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
      width: 100%;
      justify-content: center;
    }
    .footer-bottom {
      flex-direction: column;
      align-items: center;
      text-align: center;
    }
  }

/* roulang page: category4 */
:root {
    --brand: #0E7A5F;
    --brand-hover: #095C47;
    --accent: #C9822D;
    --signal: #2DD4BF;
    --bg: #F7F6F3;
    --dark: #16211E;
    --card: #FFFFFF;
    --text: #1F2A26;
    --muted: #5C6B64;
    --border: #E4E2DC;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --radius-banner: 24px;
    --shadow: 0 1px 3px rgba(22, 33, 30, 0.06);
    --shadow-hover: 0 12px 32px rgba(22, 33, 30, 0.10);
    --font-sans: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    --font-mono: "SF Mono", "JetBrains Mono", monospace;
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

  img {
    max-width: 100%;
    display: block;
  }

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
  }

  ul,
  ol {
    list-style: none;
  }

  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
  }

  @media (min-width: 768px) {
    .container {
      padding: 0 32px;
    }
  }

  /* ========== 按钮 ========== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    padding: 12px 22px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
    border: 1px solid var(--brand);
  }

  .btn-primary:hover {
    background: var(--brand-hover);
    border-color: var(--brand-hover);
    box-shadow: 0 8px 20px rgba(14, 122, 95, 0.25);
    transform: translateY(-1px);
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
  }

  .btn-primary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }

  .btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
  }

  .btn-outline:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: rgba(14, 122, 95, 0.04);
  }

  .btn-outline:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }

  .btn-accent {
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
  }

  .btn-accent:hover {
    background: #B26F24;
    border-color: #B26F24;
    box-shadow: 0 8px 24px rgba(201, 130, 45, 0.3);
    transform: translateY(-1px);
  }

  .btn-accent:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
  }

  .btn-light {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.35);
  }

  .btn-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-1px);
  }

  .btn-light:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }

  .btn-sm {
    padding: 10px 18px;
    font-size: 13px;
  }

  .btn-lg {
    padding: 15px 30px;
    font-size: 15px;
  }

  /* ========== 导航 ========== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(247, 246, 243, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 16px;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .brand-badge {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .brand-text {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--text);
    white-space: nowrap;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
    justify-content: center;
    min-width: 0;
  }

  .nav-link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--muted);
    border-radius: 999px;
    transition: all 0.2s ease;
    white-space: nowrap;
  }

  .nav-link:hover {
    color: var(--brand);
    background: rgba(14, 122, 95, 0.06);
  }

  .nav-link.active {
    color: var(--brand);
    background: rgba(14, 122, 95, 0.1);
    font-weight: 600;
  }

  .nav-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 999px;
  }

  .nav-tools {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 200px;
    height: 36px;
    padding: 0 12px;
    background: #EEEDE9;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-size: 13px;
    cursor: default;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .search-box:hover {
    border-color: var(--brand);
  }

  .search-box:focus-within {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(14, 122, 95, 0.15);
  }

  .search-placeholder {
    flex: 1;
    font-size: 13px;
    color: #9AA19B;
  }

  .shortcut {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(22, 33, 30, 0.06);
    color: var(--muted);
    white-space: nowrap;
  }

  .icon-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--muted);
    transition: all 0.2s ease;
  }

  .icon-btn:hover {
    background: rgba(14, 122, 95, 0.1);
    color: var(--brand);
  }

  .icon-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  .nav-toggle {
    display: none;
    width: 36px;
    height: 36px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border-radius: var(--radius-sm);
  }

  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .mobile-menu {
    display: none;
    flex-direction: column;
    padding: 12px 20px 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }

  .mobile-menu.open {
    display: flex;
  }

  .mobile-link {
    padding: 12px 8px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    border-bottom: 1px solid rgba(228, 226, 220, 0.7);
  }

  .mobile-link:hover {
    color: var(--brand);
  }

  .mobile-link.active {
    color: var(--brand);
    font-weight: 700;
  }

  .mobile-cta {
    margin-top: 16px;
    text-align: center;
  }

  @media (max-width: 1023px) {
    .main-nav {
      display: none;
    }

    .nav-toggle {
      display: flex;
    }
  }

  @media (max-width: 640px) {
    .search-box {
      display: none;
    }

    .brand-text {
      font-size: 17px;
    }

    .btn-sm {
      padding: 8px 14px;
      font-size: 12px;
    }

    .header-inner {
      height: 60px;
    }
  }

  /* ========== 分类页 Hero ========== */
  .page-hero {
    position: relative;
    padding: 56px 0 48px;
    background: var(--bg);
    overflow: hidden;
  }

  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(14, 122, 95, 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
    mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.6), transparent 70%);
    -webkit-mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.6), transparent 70%);
    pointer-events: none;
  }

  .page-hero .container {
    position: relative;
    z-index: 1;
    max-width: 880px;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
  }

  .breadcrumb a {
    color: var(--muted);
    transition: color 0.2s;
  }

  .breadcrumb a:hover {
    color: var(--brand);
  }

  .breadcrumb .sep {
    color: #C4C1BA;
  }

  .breadcrumb .current {
    color: var(--text);
    font-weight: 500;
  }

  .page-hero h1 {
    font-size: 42px;
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 16px;
  }

  .page-hero .hero-desc {
    font-size: 17px;
    line-height: 1.8;
    color: var(--muted);
    max-width: 640px;
  }

  @media (max-width: 640px) {
    .page-hero {
      padding: 40px 0 32px;
    }

    .page-hero h1 {
      font-size: 30px;
    }

    .page-hero .hero-desc {
      font-size: 15px;
    }
  }

  /* ========== 通用区块 ========== */
  .section {
    padding: 80px 0;
  }

  .section-dark {
    background: var(--dark);
  }

  .section-light {
    background: #FFFFFF;
  }

  .section-gray {
    background: #F1F0EC;
  }

  @media (max-width: 768px) {
    .section {
      padding: 48px 0;
    }
  }

  .section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
  }

  .section-head.left {
    text-align: left;
    margin-left: 0;
  }

  .kicker {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand);
    background: rgba(14, 122, 95, 0.1);
    border-radius: 999px;
    letter-spacing: 0.02em;
    margin-bottom: 14px;
  }

  .section-head h2 {
    font-size: 32px;
    line-height: 1.25;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.01em;
    margin-bottom: 12px;
  }

  .section-head p {
    font-size: 16px;
    line-height: 1.75;
    color: var(--muted);
  }

  @media (max-width: 640px) {
    .section-head h2 {
      font-size: 25px;
    }

    .section-head {
      margin-bottom: 32px;
    }
  }

  /* ========== FAQ ========== */
  .faq-wrapper {
    max-width: 880px;
    margin: 0 auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
  }

  .faq-item {
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
  }

  .faq-item:last-child {
    border-bottom: none;
  }

  .faq-item.open {
    background: rgba(14, 122, 95, 0.02);
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    transition: color 0.2s;
  }

  .faq-question:hover {
    color: var(--brand);
  }

  .faq-question:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
  }

  .faq-icon {
    position: relative;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(14, 122, 95, 0.1);
    transition: transform 0.3s ease, background 0.3s ease;
  }

  .faq-icon::before,
  .faq-icon::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 1.5px;
    background: var(--brand);
    border-radius: 2px;
    transform: translate(-50%, -50%);
    transition: transform 0.3s ease;
  }

  .faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: rgba(14, 122, 95, 0.18);
  }

  .faq-answer {
    display: none;
    padding: 0 24px 22px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--muted);
  }

  .faq-item.open .faq-answer {
    display: block;
    animation: faqFade 0.3s ease;
  }

  @keyframes faqFade {
    from {
      opacity: 0;
      transform: translateY(-4px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* ========== 内容清单 ========== */
  .check-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .check-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
  }

  .check-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    border-color: rgba(14, 122, 95, 0.3);
  }

  .check-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid rgba(14, 122, 95, 0.15);
    position: relative;
  }

  .check-card h3::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
  }

  .check-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .check-list li {
    display: flex;
    gap: 12px;
    font-size: 15px;
    line-height: 1.65;
    color: var(--text);
  }

  .check-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    border-radius: 50%;
    background: rgba(14, 122, 95, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .check-icon svg {
    width: 10px;
    height: 10px;
    stroke: var(--brand);
    stroke-width: 2.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  @media (max-width: 768px) {
    .check-grid {
      grid-template-columns: 1fr;
    }

    .check-card {
      padding: 24px;
    }
  }

  /* ========== 大图 Banner ========== */
  .banner-wrap {
    margin: 0 auto;
    max-width: 1280px;
    padding: 0 20px;
  }

  @media (min-width: 768px) {
    .banner-wrap {
      padding: 0 32px;
    }
  }

  .banner-cta {
    position: relative;
    height: 440px;
    border-radius: var(--radius-banner);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 16px 48px rgba(22, 33, 30, 0.15);
  }

  .banner-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/coverpic/cover-6.png');
    background-size: cover;
    background-position: center;
  }

  .banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(22, 33, 30, 0.78) 0%, rgba(22, 33, 30, 0.45) 100%);
  }

  .banner-content {
    position: relative;
    z-index: 2;
    max-width: 640px;
    padding: 40px 24px;
  }

  .banner-tag {
    display: inline-flex;
    padding: 5px 16px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: rgba(201, 130, 45, 0.85);
    border-radius: 999px;
    margin-bottom: 18px;
  }

  .banner-content h2 {
    font-size: 34px;
    line-height: 1.2;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
  }

  .banner-content p {
    font-size: 16px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 28px;
  }

  @media (max-width: 640px) {
    .banner-cta {
      height: 380px;
      border-radius: 18px;
    }

    .banner-content h2 {
      font-size: 25px;
    }

    .banner-content p {
      font-size: 14px;
    }
  }

  /* ========== 互链区 ========== */
  .related-section {
    padding: 80px 0;
    background: var(--bg);
  }

  .related-section h2 {
    text-align: center;
    font-size: 30px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 32px;
  }

  .related-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .related-tags a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 999px;
    transition: all 0.25s ease;
    box-shadow: 0 1px 2px rgba(22, 33, 30, 0.03);
  }

  .related-tags a:hover {
    border-color: var(--brand);
    color: var(--brand);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(14, 122, 95, 0.12);
  }

  .related-tags a.active {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
  }

  .related-tags a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }

  @media (max-width: 640px) {
    .related-section {
      padding: 48px 0;
    }

    .related-section h2 {
      font-size: 24px;
      margin-bottom: 24px;
    }

    .related-tags a {
      padding: 8px 18px;
      font-size: 13px;
    }
  }

  /* ========== CTA ========== */
  .cta-section {
    padding: 40px 0 80px;
    background: var(--bg);
  }

  .cta-card {
    position: relative;
    background: var(--dark);
    border-radius: var(--radius-banner);
    padding: 72px 56px;
    text-align: center;
    overflow: hidden;
  }

  .cta-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 30%, rgba(45, 212, 191, 0.08) 0%, transparent 50%),
      radial-gradient(circle at 80% 70%, rgba(201, 130, 45, 0.1) 0%, transparent 50%);
    pointer-events: none;
  }

  .cta-line {
    display: block;
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
    margin: 0 auto 24px;
  }

  .cta-card h2 {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
  }

  .cta-card p {
    font-size: 16px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.75);
    max-width: 520px;
    margin: 0 auto 32px;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
  }

  @media (max-width: 640px) {
    .cta-section {
      padding: 24px 0 48px;
    }

    .cta-card {
      padding: 40px 20px;
      border-radius: 18px;
    }

    .cta-card h2 {
      font-size: 24px;
    }

    .cta-card p {
      font-size: 14px;
    }
  }

  /* ========== 页脚 ========== */
  .site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.75);
    padding: 72px 0 0;
  }

  .site-footer .container {
    padding-bottom: 32px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 52px;
  }

  .footer-brand .brand {
    margin-bottom: 18px;
  }

  .footer-brand .brand-text {
    color: #fff;
    font-size: 22px;
  }

  .footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
    max-width: 320px;
    margin-bottom: 22px;
  }

  .footer-social {
    display: flex;
    gap: 10px;
  }

  .footer-social a {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.2s ease;
  }

  .footer-social a:hover {
    background: var(--brand);
    border-color: var(--brand);
    color: #fff;
  }

  .site-footer h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
  }

  .f-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .f-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.2s, padding-left 0.2s;
  }

  .f-links a:hover {
    color: #fff;
    padding-left: 4px;
  }

  .f-links span {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
  }

  @media (max-width: 1023px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 640px) {
    .site-footer {
      padding: 48px 0 0;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
      margin-bottom: 32px;
    }

    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
  }

  /* ========== 表单 ========== */
  .form-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
  }

  .form-group {
    margin-bottom: 18px;
  }

  .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
  }

  .form-group input,
  .form-group textarea {
    width: 100%;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0 14px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text);
    background: #FAFAF8;
    transition: border-color 0.2s, box-shadow 0.2s;
  }

  .form-group textarea {
    height: 120px;
    padding: 12px 14px;
    resize: vertical;
  }

  .form-group input:focus,
  .form-group textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(14, 122, 95, 0.12);
    background: #fff;
  }

  .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }