/* roulang page: index */
:root {
    --primary: #1B4A44;
    --primary-hover: #143A35;
    --accent: #C9A962;
    --accent-hover: #B69550;
    --bg: #FAF7F2;
    --card-bg: #FFFFFF;
    --text-main: #2A2A2A;
    --text-secondary: #6B6B6B;
    --border: #E8E2D8;
    --dark-bg: #102B28;
    --ring: rgba(201, 169, 98, 0.5);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; height: auto; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; }

  .line-clamp-1 {
    display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
  }
  .line-clamp-2 {
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  }
  .line-clamp-3 {
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  }

  .container-max {
    max-width: 80rem;
    margin-inline: auto;
    padding-inline: 1rem;
  }
  @media (min-width: 640px) { .container-max { padding-inline: 1.5rem; } }
  @media (min-width: 1024px) { .container-max { padding-inline: 2rem; } }

  .nav-link {
    font-size: 14px;
    font-weight: 500;
    color: #2a2a2a;
    padding: 6px 14px;
    border-radius: 9999px;
    transition: all 0.2s ease;
    white-space: nowrap;
  }
  .nav-link:hover {
    color: var(--primary);
    background: rgba(27, 74, 68, 0.06);
  }
  .nav-link.active {
    color: var(--primary);
    background: rgba(27, 74, 68, 0.08);
    font-weight: 600;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: #fff;
    border-radius: 9999px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.25s ease;
    border: 1px solid transparent;
  }
  .btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(27, 74, 68, 0.25);
  }
  .btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
  }
  .btn-primary .arrow {
    transition: transform 0.25s ease;
  }
  .btn-primary:hover .arrow {
    transform: translateX(3px);
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 9999px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.25s ease;
  }
  .btn-secondary:hover {
    background: rgba(27, 74, 68, 0.05);
    border-color: var(--primary-hover);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 9999px;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
  }
  .btn-ghost:hover {
    color: var(--primary);
    background: rgba(27, 74, 68, 0.05);
  }

  .card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(16,43,40,0.06);
    transition: all 0.3s ease;
  }
  .card-hover:hover {
    box-shadow: 0 20px 40px -12px rgba(16,43,40,0.15);
    transform: translateY(-4px);
  }

  .badge {
    display: inline-flex;
    align-items: center;
    background: rgba(27, 74, 68, 0.08);
    color: var(--primary);
    border-radius: 9999px;
    padding: 4px 14px;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.5;
  }

  .section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent-hover);
    margin-bottom: 12px;
  }
  .section-label::before {
    content: '';
    display: block;
    width: 24px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
  }

  .hero-ring {
    position: absolute;
    border: 2px solid rgba(201, 169, 98, 0.35);
    border-radius: 50%;
    pointer-events: none;
  }

  .search-input:focus-within {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.25);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
    opacity: 0;
    padding-top: 0;
  }
  .faq-item.open .faq-answer {
    opacity: 1;
  }
  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    color: var(--accent-hover);
  }
  .faq-icon {
    transition: transform 0.3s ease, color 0.3s ease;
    flex-shrink: 0;
  }

  .stat-number {
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--accent);
    letter-spacing: -0.02em;
  }
  @media (min-width: 1024px) {
    .stat-number { font-size: 3.25rem; }
  }

  .testimonial-card {
    border-left: 4px solid var(--accent);
    background: #fff;
    border-radius: 1rem;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(16,43,40,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  .testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(16,43,40,0.1);
  }

  .news-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 18px 20px;
    transition: all 0.25s ease;
  }
  .news-card:hover {
    border-color: rgba(27, 74, 68, 0.3);
    box-shadow: 0 8px 24px rgba(16,43,40,0.08);
    transform: translateY(-2px);
  }

  footer a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s ease;
    font-size: 14px;
  }
  footer a:hover {
    color: var(--accent);
  }

  :focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
    border-radius: 4px;
  }

  @media (max-width: 767px) {
    .desktop-nav { display: none; }
    .mobile-menu-btn { display: flex; }
  }
  @media (min-width: 768px) {
    .desktop-nav { display: flex; }
    .mobile-menu-btn { display: none; }
    .mobile-panel { display: none !important; }
  }

  .mobile-panel {
    position: fixed;
    inset: 0;
    top: 64px;
    z-index: 60;
    background: rgba(250, 247, 242, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px 20px 40px;
    overflow-y: auto;
    display: none;
  }
  .mobile-panel.open { display: block; }

  .hero-img-mask {
    border-radius: 1.75rem;
    object-fit: cover;
    width: 100%;
    height: 100%;
  }

  .grain-bg {
    position: relative;
  }
  .grain-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
  }

  .cta-section {
    background: linear-gradient(135deg, #0d2421 0%, #143a35 60%, #1b4a44 100%);
    position: relative;
    overflow: hidden;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 320px;
    height: 320px;
    border: 2px solid rgba(201, 169, 98, 0.2);
    border-radius: 50%;
  }
  .cta-section::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: 10%;
    width: 200px;
    height: 200px;
    border: 1px solid rgba(201, 169, 98, 0.15);
    border-radius: 50%;
  }

/* roulang page: article */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            line-height: 1.75;
            background-color: #FAF7F2;
            color: #2A2A2A;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        input {
            font-family: inherit;
        }

        .container-max {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1rem;
        }

        @media (min-width: 640px) {
            .container-max {
                padding: 0 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-max {
                padding: 0 2rem;
            }
        }

        .desktop-nav {
            display: none;
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
            }
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.875rem;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 500;
            color: #2A2A2A;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .nav-link:hover {
            background: rgba(27, 74, 68, 0.05);
            color: #1B4A44;
        }

        .nav-link.active {
            background: rgba(27, 74, 68, 0.06);
            color: #1B4A44;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 2px;
            transform: translateX(-50%);
            width: 16px;
            height: 2px;
            border-radius: 2px;
            background: #C9A962;
        }

        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }

        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        .search-input:focus-within {
            border-color: rgba(27, 74, 68, 0.3);
            box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.18);
        }

        .mobile-menu {
            animation: slideDown 0.3s ease;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: 9999px;
            background: #1B4A44;
            color: #fff;
            padding: 0.75rem 1.5rem;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s ease;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
        }

        .btn-primary:hover {
            background: #143A35;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(27, 74, 68, 0.18);
        }

        .card-hover {
            transition: all 0.3s ease;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px rgba(16, 43, 40, 0.10);
            border-color: rgba(201, 169, 98, 0.4);
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .aspect-video {
            aspect-ratio: 16 / 9;
        }

        .article-body {
            font-size: 17px;
            line-height: 1.8;
            color: #2A2A2A;
        }

        .article-body h2 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            color: #1B4A44;
            line-height: 1.3;
        }

        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: #2A2A2A;
        }

        .article-body p {
            margin-bottom: 1.5rem;
        }

        .article-body ul {
            margin: 0 0 1.5rem 0;
            padding-left: 1.25rem;
            list-style: disc;
        }

        .article-body ul li {
            margin-bottom: 0.5rem;
        }

        .article-body ol {
            margin: 0 0 1.5rem 0;
            padding-left: 1.25rem;
            list-style: decimal;
        }

        .article-body ol li {
            margin-bottom: 0.5rem;
        }

        .article-body blockquote {
            border-left: 4px solid #1B4A44;
            background: #f1ede7;
            padding: 1rem 1.25rem;
            border-radius: 0 0.75rem 0.75rem 0;
            color: #6B6B6B;
            margin: 2rem 0;
        }

        .article-body blockquote p {
            margin-bottom: 0.25rem;
        }

        .article-body img {
            border-radius: 1rem;
            margin: 2rem auto;
        }

        .article-body a {
            color: #1B4A44;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: #C9A962;
        }

        .article-body code {
            background: #f1ede7;
            border-radius: 6px;
            padding: 0.15rem 0.4rem;
            font-size: 0.875em;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
        }

        .article-body pre {
            background: #102B28;
            color: #e8e2d8;
            border-radius: 1rem;
            padding: 1.25rem;
            overflow-x: auto;
            margin: 2rem 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: none;
            box-shadow: 0 0 0 2px #fff, 0 0 0 4px #C9A962;
            border-radius: 8px;
        }

/* roulang page: category1 */
:root {
    --primary: #1B4A44;
    --primary-hover: #143A35;
    --accent: #C9A962;
    --accent-hover: #B69550;
    --bg: #FAF7F2;
    --card: #FFFFFF;
    --text-main: #2A2A2A;
    --text-secondary: #6B6B6B;
    --border: #E8E2D8;
    --dark-bg: #102B28;
    --error: #C0392B;
    --radius-card: 1rem;
    --radius-btn: 9999px;
    --shadow-sm: 0 1px 2px rgba(16, 43, 40, .06);
    --shadow-lg: 0 10px 30px rgba(16, 43, 40, .10);
  }

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

  html {
    scroll-behavior: smooth;
  }

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

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

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

  button {
    cursor: pointer;
    font-family: inherit;
  }

  input,
  textarea {
    font-family: inherit;
  }

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

  @media (min-width: 640px) {
    .container-max {
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
  }

  @media (min-width: 1024px) {
    .container-max {
      padding-left: 2rem;
      padding-right: 2rem;
    }
  }

  .desktop-nav {
    display: none;
  }

  @media (min-width: 768px) {
    .desktop-nav {
      display: flex;
    }
  }

  .nav-link {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: color .2s ease, background-color .2s ease;
  }

  .nav-link:hover {
    color: var(--primary);
    background: rgba(27, 74, 68, .05);
  }

  .nav-link.active {
    color: var(--primary);
    background: rgba(27, 74, 68, .06);
    font-weight: 600;
  }

  .no-scrollbar::-webkit-scrollbar {
    display: none;
  }

  .no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    border-radius: 9999px;
    background: var(--primary);
    color: #fff;
    padding: .75rem 1.75rem;
    font-size: 15px;
    font-weight: 500;
    transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
    box-shadow: var(--shadow-sm);
  }

  .btn-primary:hover {
    background: var(--primary-hover);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    border-radius: 9999px;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: .75rem 1.75rem;
    font-size: 15px;
    font-weight: 500;
    transition: background .25s ease, border-color .25s ease;
  }

  .btn-outline:hover {
    background: rgba(27, 74, 68, .05);
  }

  .card-hover {
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  }

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

  .faq-item .faq-answer {
    display: none;
  }

  .faq-item.active .faq-answer {
    display: block;
    animation: fadeIn .3s ease;
  }

  .faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: rgba(27, 74, 68, .1);
    color: var(--primary);
  }

  .faq-icon {
    transition: transform .3s ease, background .3s ease, color .3s ease;
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(27, 74, 68, .05);
    color: var(--primary);
    font-size: 18px;
    flex-shrink: 0;
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(-6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .focus-ring:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
  }

  .stat-card {
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 1rem;
    padding: 1.5rem 1rem;
    text-align: center;
  }

  .stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
  }

  @media (min-width: 1024px) {
    .stat-number {
      font-size: 40px;
    }
  }

  .stat-label {
    margin-top: .5rem;
    font-size: 13px;
    color: rgba(255, 255, 255, .6);
  }

  .section-badge {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent-hover);
  }

  .section-title {
    margin-top: .5rem;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.3;
  }

  @media (min-width: 1024px) {
    .section-title {
      font-size: 32px;
    }
  }

  @media (max-width: 520px) {
    .container-max {
      padding-left: 1rem;
      padding-right: 1rem;
    }

    .section-title {
      font-size: 24px;
    }

    .btn-primary,
    .btn-outline {
      padding: .65rem 1.25rem;
      font-size: 14px;
    }
  }

/* roulang page: category2 */
/* ===== Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-cream, #FAF7F2);
            color: var(--color-ink, #2A2A2A);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        /* ===== Container ===== */
        .container-max {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 640px) {
            .container-max {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-max {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header / Nav ===== */
        .header-shell {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid #E8E2D8;
        }
        .desktop-nav {
            display: none;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: #4a4a4a;
            padding: 8px 14px;
            border-radius: 9999px;
            white-space: nowrap;
            transition: all .22s ease;
        }
        .nav-link:hover {
            color: #1B4A44;
            background: rgba(27, 74, 68, 0.06);
        }
        .nav-link.active {
            color: #1B4A44;
            background: rgba(27, 74, 68, 0.08);
            font-weight: 600;
        }
        .mobile-nav-link {
            display: block;
            font-size: 15px;
            font-weight: 500;
            color: #2A2A2A;
            padding: 12px 16px;
            border-radius: 12px;
            transition: background .2s;
        }
        .mobile-nav-link:hover {
            background: rgba(27, 74, 68, 0.06);
        }
        .mobile-nav-link.active {
            background: rgba(27, 74, 68, 0.10);
            color: #1B4A44;
            font-weight: 600;
        }
        .search-input {
            box-shadow: 0 1px 2px rgba(27, 42, 38, 0.04);
        }
        .search-input:focus-within {
            box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.30);
            border-color: #C9A962;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #1B4A44;
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 26px;
            border-radius: 9999px;
            transition: all .25s ease;
            box-shadow: 0 2px 8px rgba(27, 74, 68, 0.14);
        }
        .btn-primary:hover {
            background: #143A35;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(27, 74, 68, 0.18);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(27, 74, 68, 0.12);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1px solid #1B4A44;
            color: #1B4A44;
            font-size: 15px;
            font-weight: 600;
            padding: 11px 24px;
            border-radius: 9999px;
            background: transparent;
            transition: all .25s ease;
        }
        .btn-secondary:hover {
            background: rgba(27, 74, 68, 0.06);
            color: #143A35;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .focus-ring {
            outline: none;
        }
        .focus-ring:focus-visible {
            box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.45);
        }
        @media (min-width: 768px) {
            .desktop-nav {
                display: flex;
            }
        }

        /* ===== Hero / Breadcrumb ===== */
        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: #6B6B6B;
        }
        .breadcrumb a:hover {
            color: #1B4A44;
        }
        .hero-ring {
            position: absolute;
            border: 1px solid rgba(201, 169, 98, 0.30);
            border-radius: 9999px;
            pointer-events: none;
        }
        .hero-image-shadow {
            box-shadow: 0 24px 48px -12px rgba(27, 42, 38, 0.16);
        }

        /* ===== Cards ===== */
        .value-card {
            background: #fff;
            border: 1px solid #E8E2D8;
            border-radius: 1rem;
            padding: 1.75rem 1.5rem;
            transition: all .3s ease;
            box-shadow: 0 1px 2px rgba(27, 42, 38, 0.04);
        }
        .value-card:hover {
            border-color: #C9A962;
            box-shadow: 0 12px 28px rgba(27, 42, 38, 0.07);
            transform: translateY(-2px);
        }
        .course-card {
            background: #fff;
            border: 1px solid #E8E2D8;
            border-radius: 1rem;
            overflow: hidden;
            transition: all .35s ease;
            box-shadow: 0 1px 3px rgba(27, 42, 38, 0.04);
        }
        .course-card:hover {
            box-shadow: 0 16px 36px rgba(27, 42, 38, 0.10);
            transform: translateY(-4px);
            border-color: rgba(201, 169, 98, 0.5);
        }
        .course-card img {
            transition: transform .5s ease;
        }
        .course-card:hover img {
            transform: scale(1.04);
        }
        .icon-badge {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(27, 74, 68, 0.08);
            color: #1B4A44;
        }
        .tag-badge {
            display: inline-block;
            background: rgba(27, 74, 68, 0.08);
            color: #1B4A44;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 9999px;
        }

        /* ===== Section Titles ===== */
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.14em;
            color: #C9A962;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        /* ===== Feature rows ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .feature-row {
                grid-template-columns: 1fr 1fr;
                gap: 3.5rem;
            }
            .feature-row.reverse .feature-media {
                order: 2;
            }
            .feature-row.reverse .feature-content {
                order: 1;
            }
        }
        .feature-media {
            border-radius: 1.5rem;
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(27, 42, 38, 0.10);
        }

        /* ===== Steps ===== */
        .step-item {
            position: relative;
            padding: 1.5rem;
            background: #fff;
            border: 1px solid #E8E2D8;
            border-radius: 1rem;
        }
        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #1B4A44;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
        }
        .step-line {
            position: absolute;
            top: 2.5rem;
            left: -1rem;
            width: 2rem;
            height: 2px;
            background: rgba(201, 169, 98, 0.4);
        }
        @media (max-width: 767px) {
            .step-line {
                display: none;
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid #E8E2D8;
            border-radius: 0.75rem;
            padding: 1.25rem 1.5rem;
            margin-bottom: 0.75rem;
            transition: border-color .25s;
        }
        .faq-item.open {
            border-color: rgba(201, 169, 98, 0.60);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            font-weight: 500;
            color: #2A2A2A;
            text-align: left;
            background: none;
            border: none;
            padding: 0;
            font-size: 16px;
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            position: relative;
            border-radius: 50%;
            border: 1.5px solid #1B4A44;
            transition: transform .3s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 10px;
            height: 1.5px;
            background: #1B4A44;
            transform: translate(-50%, -50%);
        }
        .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            transition: transform .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
            color: #6B6B6B;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 12px;
        }

        /* ===== CTA band ===== */
        .cta-band {
            background: #102B28;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 260px;
            height: 260px;
            border: 1px solid rgba(201, 169, 98, 0.22);
            border-radius: 50%;
        }
        .cta-band::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 180px;
            height: 180px;
            border: 1px solid rgba(201, 169, 98, 0.16);
            border-radius: 50%;
        }

        /* ===== Footer ===== */
        .footer-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color .2s ease;
        }
        .footer-link:hover {
            color: #C9A962;
        }
        .social-btn {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: rgba(255, 255, 255, 0.65);
            transition: all .25s ease;
        }
        .social-btn:hover {
            color: #C9A962;
            border-color: rgba(201, 169, 98, 0.5);
        }

        /* ===== Misc ===== */
        .stat-mini-card {
            background: rgba(255, 255, 255, 0.80);
            border: 1px solid #E8E2D8;
            border-radius: 14px;
            padding: 14px 10px;
            text-align: center;
        }
        .stat-mini-number {
            font-size: 26px;
            font-weight: 700;
            color: #1B4A44;
            line-height: 1.2;
        }
        .stat-mini-label {
            font-size: 12px;
            color: #6B6B6B;
            margin-top: 2px;
        }
        .dark-stat-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 1rem;
            padding: 1.5rem;
        }
        .dark-stat-number {
            font-size: 40px;
            font-weight: 700;
            color: #C9A962;
            line-height: 1.2;
        }
        .dark-stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-top: 6px;
        }

/* roulang page: category3 */
:root {
            --primary: #1B4A44;
            --primary-hover: #143A35;
            --accent: #C9A962;
            --accent-hover: #B69550;
            --bg: #FAF7F2;
            --card-bg: #FFFFFF;
            --ink: #2A2A2A;
            --ink-soft: #6B6B6B;
            --hairline: #E8E2D8;
            --dark-bg: #102B28;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --shadow-lg: 0 20px 40px -12px rgba(16, 43, 40, .15);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        .container-max {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
        @media (min-width: 640px) {
            .container-max {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        @media (min-width: 1024px) {
            .container-max {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s;
        }
        img {
            display: block;
            max-width: 100%;
        }
        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 12px;
            border-radius: 9999px;
            transition: all .2s;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(27, 74, 68, .05);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(27, 74, 68, .08);
            font-weight: 600;
        }
        .card-lift {
            transition: transform .3s, box-shadow .3s;
        }
        .card-lift:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, opacity .3s ease;
            opacity: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 320px;
            opacity: 1;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-icon {
            transition: transform .3s;
        }
        .search-input {
            transition: border-color .2s, box-shadow .2s, width .2s;
        }
        .search-input:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(201, 169, 98, .15);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            border-radius: 9999px;
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 500;
            transition: background .2s, transform .2s;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-primary .arrow {
            transition: transform .2s;
        }
        .btn-primary:hover .arrow {
            transform: translateX(3px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: 9999px;
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 500;
            transition: background .2s, transform .2s;
        }
        .btn-secondary:hover {
            background: rgba(27, 74, 68, .05);
            transform: translateY(-1px);
        }
        .badge {
            display: inline-block;
            background: rgba(27, 74, 68, .1);
            color: var(--primary);
            border-radius: 9999px;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 500;
        }
        .process-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--hairline);
            border-radius: 20px;
            padding: 28px 24px;
            transition: box-shadow .3s, transform .3s;
        }
        .process-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .process-num {
            font-size: 40px;
            font-weight: 800;
            color: rgba(27, 74, 68, .12);
            line-height: 1;
            font-family: Georgia, serif;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--hairline);
            border-radius: 14px;
            padding: 18px 20px;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item:hover {
            border-color: rgba(27, 74, 68, .25);
        }
        .faq-item.open {
            border-color: rgba(201, 169, 98, .5);
            box-shadow: 0 4px 20px rgba(0, 0, 0, .04);
        }
        .cta-section {
            background: var(--dark-bg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border: 1px solid rgba(201, 169, 98, .2);
            border-radius: 50%;
            top: -120px;
            right: -60px;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            width: 160px;
            height: 160px;
            border: 1px solid rgba(201, 169, 98, .15);
            border-radius: 50%;
            bottom: -60px;
            left: 30px;
        }
        .hero-ring {
            position: absolute;
            border: 1px solid rgba(201, 169, 98, .3);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-ring-lg {
            width: 320px;
            height: 320px;
            top: -80px;
            right: -40px;
        }
        .hero-ring-sm {
            width: 140px;
            height: 140px;
            bottom: -40px;
            left: 20px;
        }
        @media (max-width: 767px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-menu-btn {
                display: inline-flex !important;
            }
        }
        @media (min-width: 768px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-menu-btn {
                display: none !important;
            }
            .mobile-menu-panel {
                display: none !important;
            }
        }
        .mobile-menu-panel {
            display: none;
        }
        .mobile-menu-panel.open {
            display: block;
        }
        .linear-gradient-mask {
            background: linear-gradient(to right, rgba(250, 247, 242, .95) 40%, rgba(250, 247, 242, .6) 70%, transparent);
        }

/* roulang page: category4 */
:root {
            --primary: #1B4A44;
            --primary-hover: #143A35;
            --accent: #C9A962;
            --accent-hover: #B69550;
            --bg-warm: #FAF7F2;
            --card-bg: #FFFFFF;
            --text-main: #2A2A2A;
            --text-soft: #6B6B6B;
            --border-subtle: #E8E2D8;
            --dark-bg: #102B28;
            --error: #C0392B;
            --shadow-sm: 0 1px 2px rgba(16, 43, 40, 0.06);
            --shadow-md: 0 4px 16px rgba(16, 43, 40, 0.08);
            --shadow-lg: 0 12px 32px rgba(16, 43, 40, 0.12);
            --radius-xl: 16px;
            --radius-2xl: 24px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
        }

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

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

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

        input,
        textarea {
            font: inherit;
        }

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

        @media (min-width: 640px) {
            .container-max {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (min-width: 1024px) {
            .container-max {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        .border-hairline {
            border-color: var(--border-subtle);
        }

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

        .bg-primary\/10 {
            background-color: rgba(27, 74, 68, 0.1);
        }

        .bg-primary\/5 {
            background-color: rgba(27, 74, 68, 0.05);
        }

        .text-primary {
            color: var(--primary);
        }

        .text-accent {
            color: var(--accent);
        }

        .text-accent-hover {
            color: var(--accent-hover);
        }

        .text-ink-soft {
            color: var(--text-soft);
        }

        .bg-dark-bg {
            background-color: var(--dark-bg);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 9999px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: background-color .2s, transform .2s, box-shadow .2s;
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
            border-radius: 9999px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 500;
            transition: background-color .2s, color .2s, transform .2s;
        }

        .btn-outline:hover {
            background-color: rgba(27, 74, 68, 0.05);
            color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .nav-link {
            position: relative;
            display: inline-block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: 9999px;
            transition: background-color .2s, color .2s;
            white-space: nowrap;
        }

        .nav-link:hover {
            background-color: rgba(27, 74, 68, 0.06);
            color: var(--primary);
        }

        .nav-link.active {
            background-color: rgba(27, 74, 68, 0.1);
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background-color: var(--accent);
        }

        .search-input:focus-within {
            box-shadow: 0 0 0 2px var(--accent);
            border-color: transparent;
        }

        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }

        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        .desktop-nav {
            display: none;
        }

        @media (min-width: 768px) {
            .desktop-nav {
                display: flex;
            }
        }

        .mobile-menu {
            display: none;
        }

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

        .category-hero {
            background: linear-gradient(135deg, #FAF7F2 0%, #F3EDE3 100%);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            width: 420px;
            height: 420px;
            border: 1px solid rgba(201, 169, 98, 0.35);
            border-radius: 50%;
            top: -160px;
            right: -100px;
            pointer-events: none;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            border: 1px solid rgba(201, 169, 98, 0.2);
            border-radius: 50%;
            bottom: -80px;
            right: 140px;
            pointer-events: none;
        }

        .card-hover {
            transition: transform .3s, box-shadow .3s;
        }

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

        .badge-category {
            display: inline-block;
            background-color: rgba(27, 74, 68, 0.1);
            color: var(--primary);
            border-radius: 9999px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: 16px;
            padding: 20px;
            transition: border-color .2s, box-shadow .2s;
        }

        .faq-item:hover {
            border-color: rgba(27, 74, 68, 0.2);
        }

        .faq-item.open {
            border-color: rgba(27, 74, 68, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            text-align: left;
            padding: 0;
        }

        .faq-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            background-color: rgba(27, 74, 68, 0.08);
            color: var(--primary);
            transition: transform .3s, background-color .3s;
            font-size: 16px;
            font-weight: 300;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-answer-inner {
            padding-top: 16px;
            color: var(--text-soft);
            font-size: 15px;
            line-height: 1.7;
        }

        .stat-number {
            font-size: 42px;
            line-height: 1.1;
            font-weight: 700;
            color: var(--accent);
        }

        @media (min-width: 768px) {
            .stat-number {
                font-size: 52px;
            }
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-main);
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 32px;
            }
        }

        .footer-links a {
            transition: color .2s;
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .form-input {
            width: 100%;
            border-radius: 12px;
            border: 1px solid var(--border-subtle);
            padding: 12px 14px;
            background: var(--card-bg);
            font-size: 14px;
            color: var(--text-main);
            transition: border-color .2s, box-shadow .2s;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27, 74, 68, 0.12);
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--dark-bg) 0%, #163d38 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            border: 1px solid rgba(201, 169, 98, 0.25);
            border-radius: 50%;
            top: -100px;
            left: -80px;
            pointer-events: none;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            width: 180px;
            height: 180px;
            border: 1px solid rgba(201, 169, 98, 0.15);
            border-radius: 50%;
            bottom: -60px;
            right: 60px;
            pointer-events: none;
        }

        .section-divider {
            height: 1px;
            background: linear-gradient(to right, transparent, var(--border-subtle), transparent);
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 24px;
            }
            .stat-number {
                font-size: 36px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
            }
        }