/* roulang page: index */
:root {
    --primary: #0C6B5B;
    --primary-dark: #084F43;
    --primary-deeper: #0F2E28;
    --primary-light: #E6F2EE;
    --accent: #F2820B;
    --accent-hover: #F89B3A;
    --accent-active: #D97108;
    --accent-light: #FFF3E5;
    --bg: #F7F6F2;
    --card: #FFFFFF;
    --text: #1D2622;
    --text-secondary: #6E7A74;
    --border: #E3E8E5;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-hover: 0 10px 24px rgba(0,0,0,0.10);
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; transition: all .25s ease; }
  a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  button { font-family: inherit; cursor: pointer; }
  .container-x { max-width: 1280px; margin: 0 auto; padding-left: 1rem; padding-right: 1rem; }

  /* ========= Header ========= */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(247,246,242,0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
  }
  .brand-row { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 16px; }
  .brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand-icon {
    width: 40px; height: 40px; border-radius: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 800; letter-spacing: 1px;
    box-shadow: 0 4px 12px rgba(12,107,91,0.3);
  }
  .brand-text { display: flex; flex-direction: column; line-height: 1.2; }
  .brand-text strong { font-size: 17px; font-weight: 800; color: var(--primary-dark); letter-spacing: .5px; }
  .brand-text small { font-size: 11px; color: var(--text-secondary); letter-spacing: 2px; font-weight: 600; margin-top: 2px; }
  .header-search { display: none; flex: 0 1 320px; position: relative; }
  .header-search input {
    width: 100%; height: 40px; border-radius: 999px;
    border: 1px solid var(--border); background: #fff;
    padding: 0 42px 0 18px; font-size: 14px; color: var(--text);
    transition: all .3s;
  }
  .header-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(12,107,91,0.12); outline: none; }
  .header-search .search-icon {
    position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
    color: var(--text-secondary); font-size: 14px; pointer-events: none;
  }
  .header-actions { display: flex; align-items: center; gap: 10px; }
  .login-btn {
    height: 38px; padding: 0 22px; border-radius: 999px;
    background: var(--primary); color: #fff; font-size: 14px; font-weight: 600;
    display: inline-flex; align-items: center; gap: 6px;
    box-shadow: 0 4px 12px rgba(12,107,91,0.25);
    transition: all .3s;
  }
  .login-btn:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(12,107,91,0.35); }
  .login-btn:active { transform: translateY(0); }
  .nav-toggle {
    display: none; width: 40px; height: 40px; border-radius: 10px;
    border: 1px solid var(--border); background: #fff;
    flex-direction: column; align-items: center; justify-content: center; gap: 5px;
    transition: all .3s;
  }
  .nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s; }
  .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .channel-row { border-top: 1px solid var(--border); background: rgba(255,255,255,0.6); }
  .channel-nav { display: flex; align-items: center; gap: 6px; height: 44px; overflow-x: auto; scrollbar-width: none; }
  .channel-nav::-webkit-scrollbar { display: none; }
  .channel-link {
    display: inline-flex; align-items: center; padding: 0 18px; height: 32px;
    border-radius: 999px; font-size: 14px; font-weight: 600;
    color: var(--text-secondary); white-space: nowrap;
    border: 1px solid transparent;
    transition: all .25s;
  }
  .channel-link:hover { background: var(--primary-light); color: var(--primary); }
  .channel-link.active {
    background: var(--primary); color: #fff;
    box-shadow: 0 3px 10px rgba(12,107,91,0.28);
  }
  .channel-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

  @media (max-width: 768px) {
    .brand-row { height: 56px; }
    .header-search { display: none !important; }
    .nav-toggle { display: flex; }
    .channel-row { display: none; }
    .channel-row.open { display: block; }
    .channel-nav { height: auto; padding: 8px 0; flex-wrap: nowrap; gap: 4px; }
    .channel-link { height: 36px; }
  }
  @media (min-width: 769px) {
    .channel-row { display: block !important; }
  }

  /* ========= Hero ========= */
  .hero {
    position: relative;
    min-height: 620px;
    display: flex;
    align-items: center;
    background: linear-gradient(100deg, rgba(8,36,30,0.92) 0%, rgba(8,79,67,0.72) 45%, rgba(8,79,67,0.25) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    color: #fff;
    overflow: hidden;
  }
  .hero::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(8,36,30,0.5) 100%);
    pointer-events: none;
  }
  .hero-inner { position: relative; z-index: 2; width: 100%; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.16); border: 1px solid rgba(255,255,255,0.25);
    border-radius: 999px; padding: 6px 16px; font-size: 13px; font-weight: 600;
    backdrop-filter: blur(8px); margin-bottom: 20px;
  }
  .hero h1 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.25;
    max-width: 700px;
    letter-spacing: 1px;
    margin-bottom: 18px;
  }
  .hero p.lead {
    font-size: 16px; line-height: 1.9;
    color: rgba(255,255,255,0.9);
    max-width: 540px;
    margin-bottom: 34px;
    font-weight: 400;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 30px; }
  .btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    height: 48px; padding: 0 30px; border-radius: 12px;
    background: var(--accent); color: #fff; font-size: 15px; font-weight: 700;
    box-shadow: 0 8px 24px rgba(242,130,11,0.35);
    transition: all .3s;
    border: none;
  }
  .btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(242,130,11,0.4); }
  .btn-primary:active { background: var(--accent-active); transform: translateY(0); }
  .btn-outline {
    display: inline-flex; align-items: center; gap: 8px;
    height: 48px; padding: 0 30px; border-radius: 12px;
    border: 1.5px solid rgba(255,255,255,0.6); color: #fff;
    font-size: 15px; font-weight: 600; background: rgba(255,255,255,0.08);
    transition: all .3s;
  }
  .btn-outline:hover { background: rgba(255,255,255,0.18); border-color: #fff; transform: translateY(-2px); }
  .hero-stats {
    display: flex; flex-wrap: wrap; gap: 28px;
    padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.18);
    max-width: 520px;
  }
  .hero-stat strong { display: block; font-size: 22px; font-weight: 800; color: #fff; }
  .hero-stat span { font-size: 12px; color: rgba(255,255,255,0.7); }
  .hero-scroll-hint {
    position: absolute; bottom: 24px; right: 28px; z-index: 3;
    color: rgba(255,255,255,0.7); font-size: 13px;
    display: flex; align-items: center; gap: 6px;
    animation: pulseY 2s infinite;
  }
  @keyframes pulseY {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
  }

  /* ========= Sections ========= */
  .sec { padding: 72px 0; }
  .sec-tight { padding: 48px 0; }
  .sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 32px; }
  .sec-label {
    display: inline-block; font-size: 12px; font-weight: 700;
    letter-spacing: 2px; color: var(--primary);
    background: var(--primary-light); padding: 4px 12px; border-radius: 999px;
    margin-bottom: 10px;
  }
  .sec-title { font-size: clamp(22px, 2.5vw, 28px); font-weight: 800; color: var(--text); line-height: 1.35; }
  .sec-sub { font-size: 14px; color: var(--text-secondary); margin-top: 6px; max-width: 600px; }
  .sec-more {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 14px; font-weight: 600; color: var(--primary);
    background: var(--primary-light); padding: 8px 16px; border-radius: 999px;
    flex-shrink: 0; transition: all .3s;
  }
  .sec-more:hover { background: var(--primary); color: #fff; }

  /* ========= Featured Cards ========= */
  .featured-scroll {
    display: flex; gap: 16px; overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none; -ms-overflow-style: none;
    padding: 4px 4px 16px;
  }
  .featured-scroll::-webkit-scrollbar { display: none; }
  .featured-card {
    flex: 0 0 240px; scroll-snap-align: start;
    background: #fff; border-radius: var(--radius);
    overflow: hidden; border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all .3s;
    position: relative;
    display: flex; flex-direction: column;
  }
  .featured-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .fc-cover { position: relative; aspect-ratio: 4/5; overflow: hidden; }
  .fc-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
  .featured-card:hover .fc-cover img { transform: scale(1.05); }
  .fc-number {
    position: absolute; top: 12px; left: 12px;
    background: rgba(242,130,11,0.92); color: #fff;
    font-size: 13px; font-weight: 800;
    padding: 4px 10px; border-radius: 999px;
    letter-spacing: .5px; backdrop-filter: blur(4px);
  }
  .fc-duration {
    position: absolute; bottom: 12px; right: 12px;
    background: rgba(0,0,0,0.65); color: #fff;
    font-size: 11px; font-weight: 600;
    padding: 3px 8px; border-radius: 6px;
    backdrop-filter: blur(4px);
  }
  .fc-play {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    background: rgba(12,107,91,0.35); opacity: 0;
    transition: opacity .3s;
  }
  .featured-card:hover .fc-play { opacity: 1; }
  .fc-play span {
    width: 48px; height: 48px; border-radius: 50%;
    background: rgba(255,255,255,0.92); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  }
  .fc-body { padding: 14px 14px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
  .fc-body h3 { font-size: 15px; font-weight: 700; color: var(--text); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .fc-tags { display: flex; gap: 6px; flex-wrap: wrap; }
  .fc-tags span {
    font-size: 11px; color: var(--primary); background: var(--primary-light);
    padding: 2px 10px; border-radius: 999px; font-weight: 600;
  }

  @media (max-width: 640px) {
    .featured-card { flex: 0 0 190px; }
  }

  /* ========= Plant Cards ========= */
  .plant-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .plant-card {
    background: #fff; border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow);
    transition: all .3s;
    display: flex; flex-direction: column;
  }
  .plant-card:nth-child(even) { transform: translateY(18px); }
  .plant-card:hover { transform: translateY(14px); box-shadow: var(--shadow-hover); }
  .plant-card:nth-child(even):hover { transform: translateY(14px); }
  .plant-cover { position: relative; aspect-ratio: 3/4; overflow: hidden; }
  .plant-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .plant-card:hover .plant-cover img { transform: scale(1.06); }
  .plant-cover::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(8,36,30,0.35));
    opacity: 0; transition: opacity .3s;
  }
  .plant-card:hover .plant-cover::after { opacity: 1; }
  .plant-body { padding: 16px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
  .plant-body h3 { font-size: 16px; font-weight: 700; color: var(--text); line-height: 1.45; }
  .plant-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .plant-action { display: flex; align-items: center; gap: 8px; margin-top: auto; }
  .plant-btn {
    flex: 1; height: 38px; border-radius: 10px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 700;
    background: var(--primary-light); color: var(--primary);
    border: none; transition: all .3s;
  }
  .plant-btn:hover { background: var(--primary); color: #fff; }
  .plant-save {
    width: 38px; height: 38px; border-radius: 10px;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--accent-light); color: var(--accent);
    border: none; font-size: 15px; transition: all .3s;
  }
  .plant-save:hover { background: var(--accent); color: #fff; }

  @media (max-width: 1024px) {
    .plant-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .plant-card:nth-child(even), .plant-card:nth-child(even):hover { transform: none; }
  }
  @media (max-width: 520px) {
    .plant-grid { grid-template-columns: 1fr; }
  }

  /* ========= Reviews ========= */
  .reviews-sec { background: var(--primary-light); position: relative; }
  .reviews-overview {
    display: flex; align-items: center; gap: 24px;
    background: #fff; border-radius: var(--radius);
    padding: 20px 28px; box-shadow: var(--shadow);
    margin-bottom: 28px; flex-wrap: wrap;
    border: 1px solid rgba(12,107,91,0.08);
  }
  .ro-score { display: flex; align-items: center; gap: 12px; }
  .ro-score strong { font-size: 40px; font-weight: 800; color: var(--primary-dark); line-height: 1; }
  .ro-score span { font-size: 13px; color: var(--text-secondary); }
  .ro-stars { color: var(--accent); font-size: 18px; letter-spacing: 2px; }
  .ro-meta { display: flex; gap: 24px; flex-wrap: wrap; }
  .ro-meta-item { text-align: center; }
  .ro-meta-item strong { display: block; font-size: 20px; font-weight: 800; color: var(--text); }
  .ro-meta-item span { font-size: 12px; color: var(--text-secondary); }
  .reviews-scroll {
    display: flex; gap: 16px; overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none; padding: 4px 4px 16px;
  }
  .reviews-scroll::-webkit-scrollbar { display: none; }
  .review-card {
    flex: 0 0 300px; scroll-snap-align: start;
    background: #fff; border-radius: var(--radius);
    padding: 20px; border: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: flex; flex-direction: column; gap: 12px;
    transition: all .3s;
  }
  .review-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
  .review-stars { color: var(--accent); font-size: 14px; letter-spacing: 1px; }
  .review-text { font-size: 14px; line-height: 1.75; color: var(--text); flex: 1; }
  .review-user { display: flex; align-items: center; gap: 10px; }
  .review-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 700; color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    flex-shrink: 0;
  }
  .review-avatar.b2 { background: linear-gradient(135deg, #F2820B 0%, #D97108 100%); }
  .review-avatar.b3 { background: linear-gradient(135deg, #4A7F6C 0%, #2F6A54 100%); }
  .review-avatar.b4 { background: linear-gradient(135deg, #7A9E8E 0%, #5C8272 100%); }
  .review-user-info span { display: block; font-size: 13px; font-weight: 700; color: var(--text); }
  .review-user-info em { font-style: normal; font-size: 11px; color: var(--text-secondary); }

  @media (max-width: 640px) {
    .review-card { flex: 0 0 260px; }
  }

  /* ========= CTA ========= */
  .cta-sec {
    position: relative;
    background: linear-gradient(120deg, rgba(8,47,39,0.86) 0%, rgba(12,107,91,0.78) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color: #fff; text-align: center;
    padding: 72px 0;
  }
  .cta-inner { max-width: 640px; margin: 0 auto; }
  .cta-inner h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 14px; }
  .cta-inner p { font-size: 15px; line-height: 1.8; color: rgba(255,255,255,0.85); margin-bottom: 28px; }
  .btn-cta {
    display: inline-flex; align-items: center; gap: 10px;
    height: 54px; padding: 0 42px; border-radius: 14px;
    background: var(--accent); color: #fff;
    font-size: 16px; font-weight: 800;
    border: none; box-shadow: var(--cta);
    transition: all .3s;
  }
  .btn-cta:hover { background: var(--accent-hover); transform: translateY(-3px) scale(1.02); box-shadow: 0 14px 34px rgba(242,130,11,0.4); }
  .btn-cta:active { transform: translateY(0) scale(0.99); }
  .cta-note { font-size: 12px; color: rgba(255,255,255,0.6); margin-top: 16px; }

  /* ========= News List ========= */
  .news-list { display: flex; flex-direction: column; gap: 12px; }
  .news-item {
    display: flex; gap: 16px; align-items: stretch;
    background: #fff; border: 1px solid var(--border);
    border-radius: var(--radius); padding: 14px;
    box-shadow: var(--shadow);
    transition: all .3s;
  }
  .news-item:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
    transform: translateX(4px);
  }
  .news-thumb {
    width: 150px; min-height: 92px; border-radius: 12px;
    overflow: hidden; background: var(--primary-light);
    flex-shrink: 0;
  }
  .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .news-info { flex: 1; display: flex; flex-direction: column; gap: 4px; min-width: 0; }
  .news-cat {
    align-self: flex-start; font-size: 11px; font-weight: 700;
    color: var(--primary); background: var(--primary-light);
    padding: 2px 10px; border-radius: 999px;
  }
  .news-info h3 { font-size: 16px; font-weight: 700; color: var(--text); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
  .news-info p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
  .news-meta { display: flex; align-items: center; gap: 12px; margin-top: auto; }
  .news-meta time { font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; gap: 4px; }
  .news-more { font-size: 12px; font-weight: 700; color: var(--accent); }
  .news-footer { text-align: center; margin-top: 32px; }
  .btn-more {
    display: inline-flex; align-items: center; gap: 8px;
    height: 44px; padding: 0 32px; border-radius: 999px;
    border: 1.5px solid var(--primary); color: var(--primary);
    font-size: 14px; font-weight: 700; background: transparent;
    transition: all .3s;
  }
  .btn-more:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
  .empty-state {
    background: #fff; border: 1px dashed var(--border);
    border-radius: var(--radius); padding: 48px 20px;
    text-align: center; color: var(--text-secondary);
  }
  .empty-icon { font-size: 36px; margin-bottom: 8px; color: var(--primary); opacity: 0.5; }
  .empty-state p { font-size: 14px; }

  @media (max-width: 640px) {
    .news-item { flex-direction: row; padding: 12px; gap: 12px; }
    .news-thumb { width: 96px; min-height: 76px; }
    .news-info h3 { font-size: 14px; }
    .news-info p { display: none; }
  }

  /* ========= FAQ ========= */
  .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
  .faq-item {
    background: #fff; border: 1px solid var(--border);
    border-radius: 14px; overflow: hidden;
    transition: all .3s;
  }
  .faq-item.open { border-color: var(--primary); box-shadow: 0 8px 20px rgba(12,107,91,0.1); }
  .faq-q {
    display: flex; align-items: center; gap: 12px;
    padding: 16px 20px; cursor: pointer;
    font-size: 15px; font-weight: 700; color: var(--text);
    transition: all .3s;
    background: transparent; border: none; width: 100%; text-align: left;
  }
  .faq-q:hover { background: var(--primary-light); }
  .faq-icon {
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--primary-light); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; font-weight: 800; flex-shrink: 0;
    transition: all .35s;
  }
  .faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
  .faq-a {
    display: none; padding: 0 20px 20px 60px;
    font-size: 14px; line-height: 1.85; color: var(--text-secondary);
  }
  .faq-item.open .faq-a { display: block; animation: fadeIn .3s ease; }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

  /* ========= Footer ========= */
  .site-footer {
    background: var(--primary-deeper);
    color: rgba(255,255,255,0.8);
  }
  .footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr;
    gap: 40px; padding: 56px 0 40px;
  }
  .footer-brand .brand-logo { margin-bottom: 16px; }
  .footer-brand .brand-text strong { color: #fff; }
  .footer-brand .brand-text small { color: rgba(255,255,255,0.5); }
  .footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 340px; margin-top: 14px; }
  .footer-col h4 { font-size: 14px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: 1px; }
  .footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
  .footer-links a { font-size: 14px; color: rgba(255,255,255,0.6); transition: all .25s; display: inline-flex; align-items: center; gap: 6px; }
  .footer-links a:hover { color: var(--accent-hover); padding-left: 4px; }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 12px;
    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: var(--accent-hover); }

  @media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 40px 0 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .sec { padding: 50px 0; }
  }

  /* ========= Back To Top ========= */
  .back-to-top {
    position: fixed; bottom: 24px; right: 24px; z-index: 40;
    width: 44px; height: 44px; border-radius: 12px;
    background: var(--primary); color: #fff; border: none;
    font-size: 18px; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 6px 20px rgba(12,107,91,0.35);
    opacity: 0; visibility: hidden; transform: translateY(10px);
    transition: all .3s;
  }
  .back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
  .back-to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

  /* ========= misc ========= */
  .divider { height: 1px; background: var(--border); border: none; }
  .inline-svg { width: 1em; height: 1em; vertical-align: -0.125em; }

  @media (max-width: 480px) {
    .container-x { padding-left: 14px; padding-right: 14px; }
    .hero-actions { width: 100%; }
    .btn-primary, .btn-outline { flex: 1; justify-content: center; }
  }

/* roulang page: category1 */
:root {
      --primary: #0C6B5B;
      --primary-dark: #084F43;
      --primary-light: #E6F2EE;
      --accent: #F2820B;
      --accent-hover: #F89B3A;
      --accent-active: #D97108;
      --accent-light: #FFF3E5;
      --bg: #F7F6F2;
      --card: #FFFFFF;
      --text: #1D2622;
      --text-secondary: #6E7A74;
      --border: #E3E8E5;
      --radius: 14px;
      --radius-sm: 10px;
      --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
      --shadow-hover: 0 10px 24px rgba(0, 0, 0, 0.10);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.7;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    input {
      font-family: inherit;
    }

    .container-x {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 1rem;
      padding-right: 1rem;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(247, 246, 242, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      transition: background-color 0.3s ease;
    }

    .site-header.scrolled {
      background: rgba(247, 246, 242, 0.97);
    }

    .brand-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 60px;
      gap: 1rem;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      flex-shrink: 0;
    }

    .brand-icon {
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      font-size: 20px;
      font-weight: 800;
      box-shadow: 0 2px 8px rgba(12, 107, 91, 0.25);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .brand-text strong {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: 0.02em;
    }

    .brand-text small {
      font-size: 12px;
      font-weight: 500;
      color: var(--text-secondary);
      letter-spacing: 0.1em;
    }

    .header-search {
      flex: 1;
      max-width: 360px;
      position: relative;
      margin: 0 1rem;
    }

    .header-search input {
      width: 100%;
      height: 38px;
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 0 40px 0 16px;
      font-size: 13px;
      background: #fff;
      color: var(--text);
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .header-search input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(12, 107, 91, 0.15);
    }

    .header-search input::placeholder {
      color: #9AA5A0;
    }

    .search-icon {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-secondary);
      pointer-events: none;
    }

    .inline-svg {
      width: 16px;
      height: 16px;
      vertical-align: -2px;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex-shrink: 0;
    }

    .login-btn {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      height: 38px;
      padding: 0 1.1rem;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      font-size: 13px;
      font-weight: 600;
      transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
    }

    .login-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(12, 107, 91, 0.25);
    }

    .login-btn:active {
      transform: translateY(0);
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      width: 38px;
      height: 38px;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: #fff;
    }

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

    .nav-toggle.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

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

    .nav-toggle.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .channel-row {
      border-top: 1px solid var(--border);
      min-height: 42px;
    }

    .channel-nav {
      display: flex;
      gap: 0.5rem;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
      padding: 4px 0;
    }

    .channel-nav::-webkit-scrollbar {
      display: none;
    }

    .channel-link {
      display: inline-flex;
      align-items: center;
      height: 34px;
      padding: 0 1.1rem;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      white-space: nowrap;
      border: 1px solid transparent;
      transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    }

    .channel-link:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
    }

    .channel-link.active {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
    }

    .channel-link:focus-visible,
    .login-btn:focus-visible,
    .footer-links a:focus-visible,
    .back-top-btn:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }

    /* Category Hero */
    .cat-hero {
      background: var(--primary-light);
      padding: 3.5rem 0 3rem;
      position: relative;
      overflow: hidden;
      min-height: 320px;
      display: flex;
      align-items: center;
    }

    .cat-hero-bg {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.18;
      z-index: 0;
    }

    .cat-hero-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 3rem;
      align-items: center;
    }

    .cat-hero h1 {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary-dark);
      line-height: 1.25;
      letter-spacing: 0.02em;
      margin-bottom: 0.8rem;
    }

    .cat-hero .hero-sub {
      font-size: 16px;
      color: var(--text-secondary);
      line-height: 1.7;
      max-width: 42ch;
      margin-bottom: 1.5rem;
    }

    .hero-badge-list {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      background: #fff;
      border: 1px solid rgba(12, 107, 91, 0.2);
      color: var(--primary);
      font-size: 13px;
      font-weight: 500;
      padding: 0.3rem 0.8rem;
      border-radius: 999px;
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    }

    .cat-hero-visual {
      position: relative;
    }

    .cat-hero-card {
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 10px 30px rgba(12, 107, 91, 0.12);
      padding: 1.5rem;
      max-width: 340px;
      margin-left: auto;
      transform: rotate(1.5deg);
    }

    .cat-hero-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 10px;
      margin-bottom: 1rem;
    }

    .cat-hero-card .card-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.3rem;
    }

    .cat-hero-card .card-tag {
      font-size: 12px;
      color: var(--accent);
      font-weight: 500;
    }

    /* Section common */
    .section-block {
      padding: 4.5rem 0;
    }

    .section-block.alt-bg {
      background: #fff;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 1.5rem;
      margin-bottom: 2rem;
    }

    .section-head h2 {
      font-size: 26px;
      font-weight: 800;
      color: var(--text);
      line-height: 1.3;
      letter-spacing: 0.01em;
    }

    .section-head h2 span {
      color: var(--primary);
    }

    .section-extra {
      font-size: 13px;
      color: var(--text-secondary);
      flex-shrink: 0;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-secondary);
      max-width: 60ch;
      margin-top: 0.3rem;
      line-height: 1.7;
    }

    /* Step cards */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
    }

    .step-card {
      background: var(--card);
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 1.8rem 1.2rem 1.2rem;
      position: relative;
      box-shadow: var(--shadow);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .step-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }

    .step-num {
      position: absolute;
      top: 1rem;
      right: 1rem;
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-light);
      line-height: 1;
      font-variant-numeric: tabular-nums;
    }

    .step-icon {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    .step-card h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.5rem;
    }

    .step-card p {
      font-size: 13.5px;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* Method cards */
    .method-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .method-card {
      background: var(--card);
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }

    .method-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .method-card-img {
      position: relative;
      height: 200px;
      overflow: hidden;
    }

    .method-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .method-card:hover .method-card-img img {
      transform: scale(1.04);
    }

    .method-tag {
      position: absolute;
      left: 0.8rem;
      top: 0.8rem;
      background: rgba(255, 255, 255, 0.92);
      padding: 0.25rem 0.7rem;
      border-radius: 999px;
      font-size: 11px;
      font-weight: 600;
      color: var(--primary);
      backdrop-filter: blur(4px);
    }

    .method-card-body {
      padding: 1.2rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .method-card-body h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.4rem;
    }

    .method-card-body p {
      font-size: 13.5px;
      color: var(--text-secondary);
      line-height: 1.6;
      flex: 1;
    }

    .method-card-link {
      margin-top: 0.8rem;
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
    }

    .method-card-link:hover {
      color: var(--accent);
    }

    /* Scenario cards */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.5rem;
    }

    .scenario-card {
      background: #fff;
      border-radius: 16px;
      padding: 2rem;
      border: 1px solid var(--border);
      position: relative;
      overflow: hidden;
      transition: transform 0.25s, box-shadow 0.25s;
    }

    .scenario-card:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

    .scenario-card:nth-child(2),
    .scenario-card:nth-child(3) {
      transform: translateY(18px);
    }

    .scenario-card:nth-child(2):hover,
    .scenario-card:nth-child(3):hover {
      transform: translateY(16px);
    }

    .scenario-icon {
      font-size: 30px;
      margin-bottom: 1rem;
      display: block;
    }

    .scenario-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.6rem;
    }

    .scenario-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 1rem;
    }

    .scenario-list {
      list-style: none;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }

    .scenario-list li {
      font-size: 13px;
      color: var(--text);
      display: flex;
      align-items: flex-start;
      gap: 0.5rem;
    }

    .scenario-list li::before {
      content: "✓";
      color: var(--primary);
      font-weight: 700;
      flex-shrink: 0;
    }

    /* FAQ */
    .faq-wrap {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(12, 107, 91, 0.08);
    }

    .faq-q {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1rem 1.2rem;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      text-align: left;
      background: none;
      border: none;
      cursor: pointer;
      transition: background-color 0.2s;
    }

    .faq-q:hover {
      background: var(--primary-light);
    }

    .faq-icon {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 700;
      flex-shrink: 0;
      transition: transform 0.3s ease, background-color 0.3s ease;
    }

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

    .faq-a {
      display: none;
      padding: 0 1.2rem 1rem;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .faq-item.active .faq-a {
      display: block;
    }

    /* CTA section */
    .cta-section {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
      padding: 4rem 0;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      top: -40px;
      right: -40px;
      width: 240px;
      height: 240px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: 50%;
    }

    .cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2rem;
      position: relative;
      z-index: 1;
    }

    .cta-text h2 {
      font-size: 28px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 0.5rem;
    }

    .cta-text p {
      color: rgba(255, 255, 255, 0.85);
      font-size: 15px;
      max-width: 50ch;
    }

    .cta-actions {
      display: flex;
      gap: 0.75rem;
      flex-wrap: wrap;
      align-items: center;
      flex-shrink: 0;
    }

    .btn-accent {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      height: 44px;
      padding: 0 1.6rem;
      background: var(--accent);
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      border-radius: 10px;
      transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
      box-shadow: 0 4px 14px rgba(242, 130, 11, 0.35);
    }

    .btn-accent:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(242, 130, 11, 0.45);
    }

    .btn-accent:active {
      background: var(--accent-active);
      transform: translateY(0);
    }

    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      height: 44px;
      padding: 0 1.6rem;
      background: transparent;
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.6);
      transition: background-color 0.2s, border-color 0.2s, transform 0.2s;
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #fff;
      transform: translateY(-2px);
    }

    /* Notice strip */
    .notice-strip {
      background: var(--accent-light);
      border-bottom: 1px solid rgba(242, 130, 11, 0.15);
      padding: 0.75rem 0;
    }

    .notice-strip-inner {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 13px;
      color: #8a4b0b;
    }

    .notice-strip-inner strong {
      font-weight: 700;
    }

    /* Mini info cards */
    .info-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }

    .info-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 1.5rem;
      border: 1px solid var(--border);
      text-align: center;
      transition: transform 0.25s, box-shadow 0.25s;
    }

    .info-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }

    .info-card .num {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      font-variant-numeric: tabular-nums;
    }

    .info-card .label {
      font-size: 14px;
      color: var(--text-secondary);
      margin-top: 0.3rem;
      font-weight: 500;
    }

    /* Back top */
    .back-top-btn {
      position: fixed;
      right: 1.5rem;
      bottom: 1.5rem;
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #fff;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      box-shadow: 0 4px 16px rgba(12, 107, 91, 0.3);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: opacity 0.3s, transform 0.3s, visibility 0.3s, background-color 0.2s;
      z-index: 90;
    }

    .back-top-btn.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .back-top-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
    }

    /* Footer */
    .site-footer {
      background: var(--primary-dark);
      color: rgba(255, 255, 255, 0.85);
      padding: 3.5rem 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 3rem;
      padding-bottom: 3rem;
    }

    .footer-brand .brand-text strong {
      color: #fff;
    }

    .footer-brand .brand-text small {
      color: rgba(255, 255, 255, 0.6);
    }

    .footer-brand .brand-icon {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
    }

    .footer-desc {
      font-size: 14px;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.65);
      max-width: 34ch;
      margin-top: 1rem;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
    }

    .footer-links a {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.65);
      transition: color 0.2s, padding-left 0.2s;
      padding-left: 0;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 1.2rem 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      flex-wrap: wrap;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.5);
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .method-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .info-row {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (max-width: 768px) {
      .brand-row {
        min-height: 56px;
      }

      .brand-text strong {
        font-size: 18px;
      }

      .header-search {
        display: none;
      }

      .nav-toggle {
        display: flex;
      }

      .login-btn {
        height: 36px;
        padding: 0 0.9rem;
        font-size: 13px;
      }

      .channel-row {
        display: none;
      }

      .channel-row.open {
        display: block;
      }

      .channel-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding: 6px 0;
      }

      .cat-hero {
        padding: 2.5rem 0;
        min-height: auto;
      }

      .cat-hero-inner {
        grid-template-columns: 1fr;
        gap: 1.5rem;
      }

      .cat-hero h1 {
        font-size: 28px;
      }

      .cat-hero-card {
        max-width: 100%;
        transform: none;
      }

      .section-block {
        padding: 3rem 0;
      }

      .section-head h2 {
        font-size: 22px;
      }

      .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
      }

      .steps-grid {
        grid-template-columns: 1fr;
      }

      .method-grid {
        grid-template-columns: 1fr;
      }

      .scenario-grid {
        grid-template-columns: 1fr;
      }

      .scenario-card:nth-child(2),
      .scenario-card:nth-child(3) {
        transform: none;
      }

      .scenario-card:nth-child(2):hover,
      .scenario-card:nth-child(3):hover {
        transform: translateY(-2px);
      }

      .info-row {
        grid-template-columns: 1fr;
      }

      .cta-inner {
        flex-direction: column;
        text-align: center;
      }

      .cta-text p {
        margin-left: auto;
        margin-right: auto;
      }

      .cta-actions {
        justify-content: center;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }

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

      .back-top-btn {
        right: 1rem;
        bottom: 1rem;
      }
    }

    @media (max-width: 520px) {
      .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 17px;
      }

      .brand-text strong {
        font-size: 16px;
      }

      .brand-text small {
        font-size: 11px;
      }

      .cat-hero h1 {
        font-size: 26px;
      }

      .cat-hero .hero-sub {
        font-size: 14px;
      }

      .section-head h2 {
        font-size: 20px;
      }

      .section-desc {
        font-size: 14px;
      }

      .method-card-img {
        height: 180px;
      }

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

/* roulang page: article */
:root {
  --primary: #0C6B5B;
  --primary-dark: #084F43;
  --primary-light: #E6F2EE;
  --accent: #F2820B;
  --accent-hover: #F89B3A;
  --accent-active: #D97108;
  --accent-light: #FFF3E5;
  --bg: #F7F6F2;
  --surface: #FFFFFF;
  --text: #1D2622;
  --text-weak: #6E7A74;
  --border: #E3E8E5;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-tag: 999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-hover: 0 10px 24px rgba(0,0,0,0.10);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease, background-color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
button, input { font-family: inherit; }
::selection { background: var(--primary-light); color: var(--primary-dark); }
:focus-visible { outline: 3px solid rgba(12,107,91,0.25); outline-offset: 2px; }

.container-x { width: 100%; max-width: 1280px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }

.inline-svg { width: 16px; height: 16px; display: inline-block; vertical-align: -3px; }

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247,246,242,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand-row { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800;
  box-shadow: var(--shadow-sm);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 20px; font-weight: 800; color: var(--primary-dark); letter-spacing: .02em; }
.brand-text small { font-size: 12px; font-weight: 600; color: var(--text-weak); letter-spacing: .14em; }
.header-search { flex: 0 1 280px; position: relative; }
.header-search input {
  width: 100%; height: 40px;
  border: 1px solid var(--border); border-radius: 999px;
  background: #fff; padding: 0 16px 0 38px;
  font-size: 13px; color: var(--text); outline: none;
  transition: border-color .2s, box-shadow .2s, background-color .2s;
}
.header-search input::placeholder { color: #9AA6A0; }
.header-search input:hover { border-color: #CBD6D1; }
.header-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(12,107,91,0.12); }
.search-icon {
  position: absolute; left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--text-weak);
  pointer-events: none;
}
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.login-btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 38px; padding: 0 16px; border-radius: 999px;
  border: 1.5px solid var(--primary); color: var(--primary);
  font-size: 13px; font-weight: 700;
  background: transparent;
  transition: all .2s ease;
}
.login-btn:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: 0 4px 10px rgba(12,107,91,0.12); }
.login-btn:active { transform: translateY(0); }
.login-btn:focus-visible { outline: 3px solid rgba(12,107,91,0.25); outline-offset: 2px; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  width: 40px; height: 40px;
  border: 1px solid var(--border); border-radius: 10px;
  background: #fff; align-items: center; justify-content: center;
  transition: border-color .2s, background-color .2s;
}
.nav-toggle:hover { border-color: var(--primary); background: var(--primary-light); }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.channel-row { border-top: 1px solid var(--border); background: rgba(255,255,255,0.6); overflow: hidden; }
.channel-nav {
  display: flex; align-items: center; gap: 4px;
  height: 44px; overflow-x: auto;
  scrollbar-width: none; -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}
.channel-nav::-webkit-scrollbar { display: none; }
.channel-link {
  flex-shrink: 0;
  display: inline-flex; align-items: center;
  padding: 7px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  color: var(--text-weak); white-space: nowrap;
  transition: all .2s ease;
}
.channel-link:hover { background: var(--primary-light); color: var(--primary); }
.channel-link:active { transform: scale(0.97); }
.channel-link.active { background: var(--primary); color: #fff; box-shadow: 0 2px 8px rgba(12,107,91,0.25); }

/* ========== 按钮 ========== */
.btn-primary, .btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 26px; border-radius: 12px;
  font-size: 15px; font-weight: 700;
  transition: all .25s ease;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(242,130,11,0.25); border: 1.5px solid transparent; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(242,130,11,0.3); }
.btn-primary:active { background: var(--accent-active); transform: translateY(0); }
.btn-primary:focus-visible { outline: 3px solid rgba(242,130,11,0.3); outline-offset: 2px; }
.btn-outline { border: 1.5px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(12,107,91,0.12); }
.btn-outline:active { transform: translateY(0); }
.btn-outline:focus-visible { outline: 3px solid rgba(12,107,91,0.25); outline-offset: 2px; }

/* ========== 文章页 ========== */
.article-main { min-height: 60vh; }
.article-crumb { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 24px 16px 4px; font-size: 13px; color: var(--text-weak); }
.article-crumb a:hover { color: var(--primary); }
.article-crumb .sep { color: #B8C2BD; margin: 0 2px; }
.article-wrap { padding: 16px 0 48px; }
.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  padding: 36px;
  margin: 16px auto 32px;
  max-width: 900px;
}
.article-title { font-size: 34px; font-weight: 800; line-height: 1.35; margin: 16px 0 12px; color: var(--text); letter-spacing: .005em; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; color: var(--text-weak); font-size: 13px; padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item svg { width: 15px; height: 15px; opacity: .7; }
.cat-pill { background: var(--primary-light); color: var(--primary); padding: 3px 12px; border-radius: 999px; font-weight: 600; font-size: 12px; }
.article-cover { margin-bottom: 24px; border-radius: 16px; overflow: hidden; aspect-ratio: 16/9; background: #E9EFEC; border: 1px solid var(--border); }
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-body { font-size: 16px; line-height: 1.85; color: #2A3530; overflow-wrap: break-word; }
.article-body h2 { font-size: 22px; font-weight: 800; margin: 32px 0 12px; color: var(--text); padding-left: 14px; border-left: 4px solid var(--primary); }
.article-body h3 { font-size: 18px; font-weight: 700; margin: 28px 0 10px; color: var(--text); }
.article-body h4 { font-size: 16px; font-weight: 700; margin: 24px 0 8px; color: var(--text); }
.article-body p { margin: 16px 0; }
.article-body ul, .article-body ol { margin: 16px 0; padding-left: 24px; }
.article-body li { margin: 8px 0; }
.article-body li::marker { color: var(--primary); }
.article-body blockquote { margin: 20px 0; padding: 14px 20px; background: var(--primary-light); border-left: 4px solid var(--primary); border-radius: 0 10px 10px 0; color: #2A3530; }
.article-body img { border-radius: 12px; margin: 20px 0; }
.article-body a { color: var(--primary); font-weight: 600; border-bottom: 1px solid transparent; }
.article-body a:hover { border-bottom-color: var(--primary); }
.article-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }

/* ========== 相关推荐 ========== */
.related-wrap { background: var(--surface); border-top: 1px solid var(--border); padding: 56px 0 64px; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.section-head h2 { font-size: 26px; font-weight: 800; color: var(--text); margin: 0; }
.section-more { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; }
.section-more:hover { color: var(--primary-dark); transform: translateX(2px); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.related-card { background: var(--bg); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: all .25s ease; display: block; }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: #D2DCD7; }
.related-card:active { transform: translateY(-2px); }
.related-card .rc-cover { aspect-ratio: 4/3; overflow: hidden; position: relative; }
.related-card .rc-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .rc-cover img { transform: scale(1.05); }
.rc-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 999px; line-height: 1.5; }
.rc-tag.oncover { position: absolute; top: 12px; left: 12px; background: rgba(255,255,255,0.92); color: var(--primary); font-weight: 700; backdrop-filter: blur(4px); box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.rc-content { padding: 20px; }
.rc-content h3 { font-size: 16px; font-weight: 700; line-height: 1.5; margin: 0 0 8px; color: var(--text); }
.rc-content p { font-size: 13px; color: var(--text-weak); margin: 0 0 12px; line-height: 1.65; }

/* ========== 未找到 ========== */
.notfound-wrap { min-height: 60vh; display: flex; align-items: center; justify-content: center; padding: 64px 16px; }
.notfound-card { background: #fff; border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow-sm); padding: 56px 40px; text-align: center; max-width: 480px; width: 100%; }
.notfound-icon { width: 64px; height: 64px; border-radius: 50%; background: var(--primary-light); color: var(--primary); font-size: 28px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.notfound-card h1 { font-size: 26px; font-weight: 800; margin: 8px 0 12px; color: var(--text); }
.notfound-card p { color: var(--text-weak); margin: 0 0 24px; }

/* ========== Footer ========== */
.site-footer { background: var(--primary-dark); color: #E8F0ED; padding-top: 52px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 36px; }
.footer-brand .brand-text strong { color: #fff; }
.footer-brand .brand-text small { color: rgba(232,240,237,0.7); }
.footer-brand .brand-icon { background: var(--accent); }
.footer-desc { font-size: 14px; line-height: 1.8; margin-top: 16px; color: rgba(232,240,237,0.75); max-width: 340px; }
.footer-col h4 { font-size: 15px; font-weight: 700; margin: 0 0 16px; color: #fff; }
.footer-links { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: rgba(232,240,237,0.75); transition: all .2s ease; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-links a:active { padding-left: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 18px 0; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 12px; color: rgba(232,240,237,0.55); }

/* ========== 回到顶部 ========== */
.back-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 60;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff; border: none;
  font-size: 20px; line-height: 1; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 18px rgba(12,107,91,0.3);
  transition: all .25s ease;
  opacity: .85;
}
.back-top:hover { background: var(--primary-dark); transform: translateY(-3px); opacity: 1; box-shadow: 0 10px 24px rgba(12,107,91,0.35); }
.back-top:active { transform: translateY(0); }
.back-top:focus-visible { outline: 3px solid rgba(255,255,255,0.4); outline-offset: 2px; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .header-search { flex: 0 1 220px; }
  .related-grid { grid-template-columns: repeat(3, 1fr); }
  .article-card { padding: 28px; }
}
@media (max-width: 768px) {
  .header-search {
    display: none;
    position: absolute;
    top: 64px; left: 16px; right: 16px; z-index: 40;
    background: #fff;
    padding: 12px;
    border-radius: 14px;
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border);
  }
  .header-search.show { display: block; }
  .header-search input { height: 42px; }
  .nav-toggle { display: flex; }
  .article-title { font-size: 26px; }
  .article-card { padding: 22px; border-radius: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .notfound-card { padding: 40px 24px; }
}
@media (max-width: 520px) {
  .brand-text strong { font-size: 17px; }
  .brand-text small { font-size: 11px; }
  .brand-icon { width: 38px; height: 38px; font-size: 18px; border-radius: 10px; }
  .login-btn { padding: 0 12px; font-size: 13px; }
  .login-btn svg { width: 14px; height: 14px; }
  .channel-link { padding: 6px 14px; font-size: 13px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-title { font-size: 23px; }
  .article-meta { gap: 12px; }
  .article-actions .btn-primary, .article-actions .btn-outline { flex: 1 1 100%; }
  .back-top { right: 16px; bottom: 16px; width: 40px; height: 40px; font-size: 18px; }
}

/* roulang page: category2 */
:root {
    --primary: #0C6B5B;
    --primary-dark: #084F43;
    --primary-light: #E6F2EE;
    --accent: #F2820B;
    --accent-hover: #F89B3A;
    --accent-dark: #D97108;
    --accent-light: #FFF3E5;
    --bg: #F7F6F2;
    --card: #FFFFFF;
    --ink: #1D2622;
    --ink-muted: #6E7A74;
    --border: #E3E8E5;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
    --shadow-hover: 0 10px 24px rgba(0, 0, 0, .10);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

  a {
    color: inherit;
    text-decoration: none;
  }

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

  ul,
  ol {
    list-style: none;
  }

  .container-x {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
  }

  .section-space {
    padding: 84px 0;
  }

  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 52px;
  }

  .section-head h2 {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: .5px;
    color: var(--ink);
    margin: 14px 0 10px;
  }

  .section-head p {
    color: var(--ink-muted);
    font-size: 15px;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    letter-spacing: .3px;
  }

  .badge-primary {
    background: var(--primary-light);
    color: var(--primary);
  }

  .badge-accent {
    background: var(--accent-light);
    color: var(--accent-dark);
  }

  .badge-light {
    background: rgba(255, 255, 255, .18);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .28);
    backdrop-filter: blur(4px);
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 700;
    line-height: 1;
    padding: 14px 26px;
    border-radius: 10px;
    transition: all .25s ease;
    border: 1.5px solid transparent;
    white-space: nowrap;
  }

  .btn:focus-visible,
  .channel-link:focus-visible,
  .brand-logo:focus-visible,
  .footer-links a:focus-visible,
  .nav-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 8px;
  }

  .btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(242, 130, 11, .28);
  }

  .btn-accent:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(242, 130, 11, .35);
  }

  .btn-accent:active {
    background: var(--accent-dark);
    transform: translateY(0);
    box-shadow: none;
  }

  .btn-outline-light {
    border-color: rgba(255, 255, 255, .6);
    color: #fff;
    background: transparent;
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, .14);
    border-color: #fff;
    transform: translateY(-2px);
  }

  .btn-primary-outline {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
  }

  .btn-primary-outline:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
  }

  .btn-lg {
    padding: 16px 34px;
    font-size: 16px;
    border-radius: 12px;
  }

  .disabled,
  .btn[disabled] {
    opacity: .5;
    pointer-events: none;
    cursor: not-allowed;
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(247, 246, 242, .92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
  }

  .brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 62px;
    flex-wrap: nowrap;
  }

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

  .brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(12, 107, 91, .25);
  }

  .brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
  }

  .brand-text strong {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: .3px;
  }

  .brand-text small {
    font-size: 12px;
    color: var(--ink-muted);
    font-weight: 500;
    letter-spacing: 1px;
  }

  .header-search {
    display: flex;
    align-items: center;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0 14px;
    height: 40px;
    width: 240px;
    transition: all .25s ease;
  }

  .header-search:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(12, 107, 91, .12);
  }

  .header-search input {
    border: none;
    outline: none;
    background: transparent;
    width: 100%;
    font-size: 13px;
    color: var(--ink);
  }

  .header-search .search-icon {
    color: var(--ink-muted);
    display: flex;
    align-items: center;
    flex-shrink: 0;
  }

  .header-search .inline-svg,
  .login-btn .inline-svg {
    width: 16px;
    height: 16px;
  }

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

  .login-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 40px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
    transition: all .25s ease;
  }

  .login-btn:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-1px);
  }

  .login-btn:active {
    transform: translateY(0);
  }

  .nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary-light);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: background .25s ease;
  }

  .nav-toggle:hover {
    background: #d5e7e0;
  }

  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary-dark);
    transition: all .25s ease;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .channel-row {
    border-top: 1px solid var(--border);
    background: rgba(255, 255, 255, .72);
    backdrop-filter: blur(8px);
  }

  .channel-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    overflow-x: auto;
    padding: 6px 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
    white-space: nowrap;
  }

  .channel-nav::-webkit-scrollbar {
    display: none;
  }

  .channel-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    border-radius: 999px;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--ink-muted);
    transition: all .22s ease;
  }

  .channel-link:hover {
    background: var(--primary-light);
    color: var(--primary);
  }

  .channel-link.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(12, 107, 91, .28);
    font-weight: 700;
  }

  /* Category hero */
  .cat-hero {
    background-size: cover;
    background-position: center;
    position: relative;
    color: #fff;
  }

  .cat-hero-content {
    max-width: 680px;
    padding: 92px 0 110px;
  }

  .cat-hero-content .badge {
    margin-bottom: 18px;
  }

  .cat-hero-content h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 18px;
    letter-spacing: .5px;
  }

  .cat-hero-content p {
    font-size: 16.5px;
    line-height: 1.85;
    color: rgba(255, 255, 255, .92);
    margin-bottom: 34px;
    max-width: 560px;
  }

  .hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
  }

  /* Feature cards */
  .feature-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 30px 26px;
    box-shadow: var(--shadow-sm);
    transition: all .28s ease;
  }

  .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
  }

  .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 18px;
  }

  .feature-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .feature-card p {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.7;
  }

  /* Topic cards */
  .topic-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .topic-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all .3s ease;
    display: flex;
    flex-direction: column;
  }

  .topic-card:nth-child(even) {
    transform: translateY(24px);
  }

  .topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(12, 107, 91, .35);
  }

  .topic-card:hover:nth-child(even) {
    transform: translateY(20px);
  }

  .topic-cover {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
  }

  .topic-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
  }

  .topic-card:hover .topic-cover img {
    transform: scale(1.05);
  }

  .topic-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(12, 107, 91, .85);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
  }

  .topic-body {
    padding: 20px 22px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .topic-body h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .topic-body p {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.7;
    flex: 1;
  }

  .topic-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
  }

  .topic-meta span {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
  }

  /* Steps */
  .steps-wrap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
  }

  .step-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 30px 24px;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: all .28s ease;
  }

  .step-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
  }

  .step-num {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    box-shadow: 0 4px 12px rgba(242, 130, 11, .25);
  }

  .step-card h3 {
    font-size: 16.5px;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .step-card p {
    font-size: 13.5px;
    color: var(--ink-muted);
    line-height: 1.7;
  }

  /* Compare section */
  .compare-section {
    background: var(--primary-dark);
    color: #fff;
    position: relative;
    overflow: hidden;
  }

  .compare-section::before {
    content: '';
    position: absolute;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .04);
    top: -160px;
    right: -120px;
  }

  .compare-section .section-head h2 {
    color: #fff;
  }

  .compare-section .section-head p {
    color: rgba(255, 255, 255, .7);
  }

  .compare-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
  }

  .compare-card {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: var(--radius);
    padding: 26px 22px;
    backdrop-filter: blur(6px);
    transition: all .28s ease;
  }

  .compare-card:hover {
    background: rgba(255, 255, 255, .14);
    transform: translateY(-4px);
  }

  .compare-card h4 {
    font-size: 16.5px;
    font-weight: 700;
    margin-bottom: 6px;
    color: #fff;
  }

  .compare-card .cmp-type {
    display: inline-block;
    font-size: 12px;
    color: var(--accent-hover);
    font-weight: 600;
    margin-bottom: 14px;
    background: rgba(242, 130, 11, .18);
    padding: 4px 10px;
    border-radius: 999px;
  }

  .compare-card ul li {
    font-size: 13.5px;
    color: rgba(255, 255, 255, .82);
    padding: 5px 0;
    display: flex;
    gap: 8px;
    line-height: 1.6;
  }

  .compare-card ul li::before {
    content: '·';
    font-weight: 800;
    color: var(--accent-hover);
    flex-shrink: 0;
  }

  /* Testimonials */
  .testimonial-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 20px 4px 28px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .testimonial-scroll::-webkit-scrollbar {
    display: none;
  }

  .testimonial-card {
    min-width: 300px;
    max-width: 340px;
    flex-shrink: 0;
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 26px;
    box-shadow: var(--shadow-sm);
    scroll-snap-align: start;
    transition: all .28s ease;
  }

  .testimonial-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
  }

  .testimonial-stars {
    color: var(--accent);
    font-size: 15px;
    letter-spacing: 2px;
    margin-bottom: 12px;
  }

  .testimonial-text {
    font-size: 14px;
    color: var(--ink);
    line-height: 1.75;
    margin-bottom: 18px;
  }

  .testimonial-user {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 700;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .testimonial-user .tu-name {
    font-size: 14px;
    font-weight: 600;
  }

  .testimonial-user .tu-meta {
    font-size: 12px;
    color: var(--ink-muted);
  }

  /* FAQ */
  .faq-list {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .faq-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition: all .25s ease;
  }

  .faq-item:hover {
    border-color: var(--primary);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    font-size: 15.5px;
    font-weight: 600;
    color: var(--ink);
    text-align: left;
    background: transparent;
    transition: background .2s ease;
  }

  .faq-question:hover {
    background: var(--primary-light);
  }

  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform .3s ease;
  }

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

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .3s ease;
    padding: 0 22px;
  }

  .faq-item.open .faq-answer {
    max-height: 320px;
    padding: 0 22px 20px;
  }

  .faq-answer p {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.75;
    border-left: 3px solid var(--primary-light);
    padding-left: 14px;
  }

  /* CTA */
  .cta-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
    padding: 88px 0;
    position: relative;
    overflow: hidden;
    text-align: center;
  }

  .cta-section::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .04);
    bottom: -200px;
    left: -120px;
  }

  .cta-section h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 14px;
  }

  .cta-section p {
    font-size: 16px;
    color: rgba(255, 255, 255, .85);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.8;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
  }

  /* Footer */
  .site-footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, .8);
    padding: 64px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
  }

  .footer-brand .brand-text strong {
    color: #fff;
  }

  .footer-brand .brand-text small {
    color: rgba(255, 255, 255, .55);
  }

  .footer-brand .brand-icon {
    background: rgba(255, 255, 255, .14);
    box-shadow: none;
  }

  .footer-desc {
    font-size: 13.5px;
    line-height: 1.75;
    color: rgba(255, 255, 255, .6);
    margin-top: 18px;
    max-width: 340px;
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
  }

  .footer-links li {
    margin-bottom: 10px;
  }

  .footer-links a {
    font-size: 13.5px;
    color: rgba(255, 255, 255, .65);
    transition: all .22s ease;
    padding: 2px 0;
  }

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

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .12);
    padding: 20px 0 24px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 12.5px;
    color: rgba(255, 255, 255, .4);
  }

  /* Back to top */
  .back-to-top {
    position: fixed;
    right: 24px;
    bottom: 28px;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: var(--primary);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 18px rgba(8, 79, 67, .3);
    z-index: 40;
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: all .3s ease;
  }

  .back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .back-to-top:hover {
    background: var(--accent);
    transform: translateY(-3px);
  }

  /* Responsive */
  @media (max-width: 1024px) {
    .topic-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .topic-card:nth-child(even) {
      transform: none;
    }

    .topic-card:hover:nth-child(even) {
      transform: translateY(-4px);
    }

    .steps-wrap {
      grid-template-columns: repeat(2, 1fr);
    }

    .compare-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 768px) {
    .section-space {
      padding: 56px 0;
    }

    .section-head {
      margin-bottom: 36px;
    }

    .section-head h2 {
      font-size: 24px;
    }

    .header-search {
      display: none;
      position: absolute;
      top: 64px;
      left: 12px;
      right: 12px;
      width: auto;
      z-index: 30;
      box-shadow: var(--shadow-hover);
    }

    .header.nav-open .header-search {
      display: flex;
    }

    .nav-toggle {
      display: flex;
    }

    .brand-text strong {
      font-size: 16px;
    }

    .brand-icon {
      width: 36px;
      height: 36px;
      font-size: 17px;
    }

    .channel-link {
      font-size: 14px;
      padding: 7px 16px;
    }

    .cat-hero-content {
      padding: 60px 0 78px;
    }

    .cat-hero-content h1 {
      font-size: 32px;
    }

    .cat-hero-content p {
      font-size: 15px;
    }

    .topic-grid {
      grid-template-columns: 1fr;
    }

    .steps-wrap {
      grid-template-columns: 1fr;
      gap: 16px;
    }

    .compare-grid {
      grid-template-columns: 1fr;
    }

    .testimonial-card {
      min-width: 260px;
    }

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

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

    .hero-actions {
      flex-direction: column;
      align-items: stretch;
    }

    .hero-actions .btn {
      justify-content: center;
    }

    .cta-section {
      padding: 60px 0;
    }

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

  @media (max-width: 520px) {
    .brand-text strong {
      font-size: 15px;
    }

    .brand-text small {
      font-size: 11px;
    }

    .login-btn {
      padding: 0 14px;
      font-size: 13px;
    }

    .cat-hero-content h1 {
      font-size: 28px;
    }

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

    .compare-card {
      padding: 20px 16px;
    }

    .faq-question {
      padding: 16px 16px;
      font-size: 14.5px;
    }

    .faq-answer p {
      font-size: 13.5px;
    }
  }

  @media (max-width: 360px) {
    .container-x {
      padding: 0 14px;
    }

    .login-btn {
      display: none;
    }
  }