/* roulang page: index */
:root {
            --brand: #0E9F6E;
            --brand-dark: #0C7A55;
            --brand-gradient: linear-gradient(135deg, #0E9F6E 0%, #16C79A 50%, #38E0B8 100%);
            --accent: #FF8A00;
            --bg: #F7F9F9;
            --card-radius: 24px;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --border-light: #E2E8F0;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            background-color: var(--bg);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            transition: color .3s ease;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-x {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 768px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        .brand-gradient {
            background: var(--brand-gradient);
        }
        .hero-section {
            background:
                linear-gradient(135deg, rgba(14, 159, 110, .94) 0%, rgba(22, 199, 154, .90) 50%, rgba(56, 224, 184, .86) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            border: 48px solid rgba(255, 255, 255, .08);
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 30%;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            border: 32px solid rgba(255, 255, 255, .06);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            padding: .875rem 2rem;
            border-radius: 9999px;
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 4px 16px rgba(14, 159, 110, .3);
            transition: all .3s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(14, 159, 110, .42);
            transform: translateY(-2px);
            filter: brightness(1.05);
        }
        .btn-primary:active {
            transform: scale(.95);
            box-shadow: 0 2px 10px rgba(14, 159, 110, .3);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(14, 159, 110, .35);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            padding: .875rem 2rem;
            border-radius: 9999px;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: all .3s ease;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: scale(.95);
        }
        .card-base {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--card-radius);
            overflow: hidden;
            transition: all .3s ease;
        }
        .card-base:hover {
            box-shadow: 0 12px 32px rgba(30, 41, 59, .08);
            transform: translateY(-4px);
        }
        .badge-soft {
            display: inline-flex;
            align-items: center;
            gap: .25rem;
            padding: .25rem .75rem;
            border-radius: 9999px;
            font-size: .75rem;
            font-weight: 600;
            background: rgba(14, 159, 110, .1);
            color: var(--brand-dark);
        }
        .badge-accent {
            display: inline-flex;
            align-items: center;
            gap: .25rem;
            padding: .25rem .75rem;
            border-radius: 9999px;
            font-size: .75rem;
            font-weight: 600;
            background: rgba(255, 138, 0, .12);
            color: #C26A00;
        }
        .stat-num {
            font-size: 2.25rem;
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--brand) 0%, #16C79A 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        @media (min-width: 768px) {
            .stat-num {
                font-size: 2.75rem;
            }
        }
        .gradient-line {
            height: 3px;
            background: var(--brand-gradient);
            border-radius: 9999px;
        }
        .section-title {
            font-size: 1.875rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--text-main);
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 16px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }
        .faq-item.open {
            box-shadow: 0 8px 24px rgba(30, 41, 59, .06);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            text-align: left;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            transition: background .3s;
        }
        .faq-question:hover {
            background: rgba(14, 159, 110, .04);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: -2px;
        }
        .faq-icon {
            transition: transform .3s ease;
            color: var(--brand);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            font-size: .9375rem;
            line-height: 1.75;
            color: var(--text-muted);
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            color: #475569;
            padding: .5rem .25rem;
            transition: color .25s;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--brand-gradient);
            border-radius: 2px;
            transition: width .3s ease;
        }
        .nav-link:hover {
            color: var(--brand-dark);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--brand-dark);
            font-weight: 700;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .input-search {
            width: 100%;
            border-radius: 9999px;
            border: 1px solid var(--border-light);
            padding: .5rem 1rem .5rem 2.5rem;
            font-size: .875rem;
            background: var(--bg);
            transition: all .3s;
        }
        .input-search:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(14, 159, 110, .15);
            background: #fff;
        }
        .input-search::placeholder {
            color: #94A3B8;
        }
        .card-overlay {
            background: linear-gradient(to top, rgba(0, 0, 0, .72) 0%, transparent 60%);
        }
        .circle-decoration {
            border-radius: 50%;
            background: rgba(255, 255, 255, .05);
            position: absolute;
            border: 2px solid rgba(255, 255, 255, .08);
        }
        .horizontal-scroll {
            display: flex;
            gap: 1.25rem;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding-bottom: .75rem;
            scrollbar-width: thin;
            scrollbar-color: var(--brand) transparent;
        }
        .horizontal-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .horizontal-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .horizontal-scroll::-webkit-scrollbar-thumb {
            background: rgba(14, 159, 110, .3);
            border-radius: 9999px;
        }
        .scroll-item {
            scroll-snap-align: start;
            flex-shrink: 0;
        }
        .footer-link {
            color: rgba(255, 255, 255, .65);
            font-size: .9rem;
            transition: color .25s;
            display: inline-flex;
            align-items: center;
            gap: .5rem;
        }
        .footer-link:hover {
            color: #fff;
        }
        .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;
        }
        .section-space {
            padding-top: 4rem;
            padding-bottom: 4rem;
        }
        @media (min-width: 768px) {
            .section-space {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }
        .mobile-nav-enter:hover {
            background: rgba(14, 159, 110, .08);
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
            }
            .desktop-actions {
                display: none;
            }
        }
        @media (min-width: 1024px) {
            .mobile-toggle {
                display: none;
            }
        }

/* roulang page: article */
:root {
            --brand: #0E9F6E;
            --brand-dark: #0C7A55;
            --brand-light: #16C79A;
            --accent: #FF8A00;
            --yellow: #F7B955;
            --bg: #F7F9F9;
            --card-radius: 24px;
            --footer-dark: #0F1F1C;
            --text-main: #0F172A;
            --text-weak: #64748B;
            --border-color: #E2E8F0;
            --shadow-card: 0 4px 24px rgba(15, 23, 42, .06);
            --shadow-hover: 0 12px 36px rgba(15, 23, 42, .10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
            outline: none;
        }

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

        @media (min-width: 768px) {
            .container-x {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        .brand-gradient {
            background: linear-gradient(135deg, #0E9F6E 0%, #16C79A 50%, #38E0B8 100%);
        }

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

        .desktop-nav .nav-link {
            position: relative;
            font-weight: 500;
            color: #475569;
            padding: 6px 4px;
            transition: color .25s;
        }

        .desktop-nav .nav-link:hover {
            color: var(--brand-dark);
        }

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

        .desktop-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 3px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--brand), var(--brand-light));
        }

        .input-search {
            height: 38px;
            border-radius: 999px;
            border: 1px solid var(--border-color);
            background: #F8FAFC;
            padding: 0 14px 0 38px;
            font-size: 13px;
            color: var(--text-main);
            transition: border-color .25s, box-shadow .25s, background .25s;
        }

        .input-search:focus {
            border-color: var(--brand);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(14, 159, 110, .12);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: linear-gradient(135deg, #0E9F6E, #16C79A);
            color: #fff;
            font-weight: 600;
            border: none;
            border-radius: 999px;
            padding: 10px 24px;
            cursor: pointer;
            transition: transform .2s, box-shadow .25s;
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(14, 159, 110, .32);
        }

        .btn-primary:active {
            transform: scale(.96);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: #fff;
            color: var(--brand-dark);
            border: 1.5px solid rgba(14, 159, 110, .3);
            font-weight: 600;
            border-radius: 999px;
            padding: 10px 24px;
            cursor: pointer;
            transition: all .25s;
        }

        .btn-secondary:hover {
            background: rgba(14, 159, 110, .08);
            border-color: var(--brand);
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: #fff;
            color: var(--brand-dark);
            font-weight: 700;
            border: none;
            border-radius: 999px;
            padding: 12px 28px;
            transition: transform .2s, box-shadow .25s;
        }

        .btn-white:hover {
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, .15);
        }

        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            border: 1.5px solid rgba(255, 255, 255, .6);
            border-radius: 999px;
            padding: 10px 26px;
            transition: all .25s;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
        }

        .badge-soft {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(14, 159, 110, .10);
            color: var(--brand-dark);
            font-size: 12px;
            font-weight: 700;
            border-radius: 999px;
            padding: 4px 14px;
        }

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

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

        .section-title {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -.02em;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2rem;
            }
        }

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

        .article-content {
            font-size: 17px;
            line-height: 1.9;
            color: #1E293B;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 2rem 0 1rem;
            padding-bottom: .5rem;
            border-bottom: 2px solid rgba(14, 159, 110, .15);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 1.75rem 0 .75rem;
        }

        .article-content p {
            margin-bottom: 1.25rem;
        }

        .article-content a {
            color: var(--brand-dark);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.25rem 1.5rem;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: .5rem;
        }

        .article-content img {
            border-radius: 1rem;
            margin: 1.5rem auto;
            box-shadow: var(--shadow-card);
        }

        .article-content blockquote {
            border-left: 4px solid var(--brand);
            background: #F0FDF9;
            padding: 1rem 1.5rem;
            border-radius: 0 1rem 1rem 0;
            margin: 1.5rem 0;
            color: #334155;
        }

        .article-content blockquote p {
            margin: 0;
        }

        .article-content pre {
            background: #0F172A;
            color: #E2E8F0;
            border-radius: 1rem;
            padding: 1.25rem;
            overflow-x: auto;
            font-size: .9rem;
            margin: 1.5rem 0;
        }

        .footer-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .60);
            font-size: 14px;
            transition: color .25s;
        }

        .footer-link:hover {
            color: #fff;
        }

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

        .cta-card {
            background: linear-gradient(135deg, #0E9F6E 0%, #16C79A 50%, #38E0B8 100%);
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .desktop-actions {
                display: none;
            }
        }

        @media (min-width: 1025px) {
            .mobile-toggle {
                display: none;
            }
        }

        @media (max-width: 640px) {
            .container-x {
                padding-left: .75rem;
                padding-right: .75rem;
            }
        }

/* roulang page: category1 */
:root {
    --brand: #0E9F6E;
    --brand-dark: #0C7A55;
    --brand-light: #16C79A;
    --accent: #FF8A00;
    --accent-light: #FFB347;
    --yellow: #F7B955;
    --bg: #F7F9F9;
    --ink: #0F1F1C;
    --text: #273B36;
    --muted: #6B7C76;
    --border: #E5EDEA;
    --card-radius: 24px;
    --shadow-sm: 0 2px 12px rgba(15, 31, 28, .06);
    --shadow-lg: 0 16px 40px rgba(15, 31, 28, .12);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  input {
    font-family: inherit;
  }

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

  @media (min-width: 768px) {
    .container-x {
      padding-left: 24px;
      padding-right: 24px;
    }
  }

  .brand-gradient {
    background: linear-gradient(135deg, #0E9F6E 0%, #16C79A 50%, #38E0B8 100%);
  }

  .brand-gradient-text {
    background: linear-gradient(135deg, #0E9F6E 0%, #16C79A 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .bg-dark-footer {
    background: #0F1F1C;
  }

  .nav-link {
    position: relative;
    font-weight: 600;
    color: #4B6360;
    padding: 6px 2px;
    transition: color .25s;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--brand);
    transition: width .25s;
  }

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

  .nav-link:hover::after {
    width: 100%;
  }

  .nav-link.active {
    color: var(--brand-dark);
  }

  .nav-link.active::after {
    width: 100%;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #0E9F6E 0%, #16C79A 100%);
    color: #fff;
    font-weight: 700;
    border: none;
    border-radius: 999px;
    padding: 12px 24px;
    font-size: 15px;
    line-height: 1.4;
    box-shadow: 0 4px 16px rgba(14, 159, 110, .28);
    transition: all .3s ease;
  }

  .btn-primary:hover {
    box-shadow: 0 8px 24px rgba(14, 159, 110, .4);
    filter: brightness(1.05);
    transform: translateY(-1px);
  }

  .btn-primary:active {
    transform: scale(.96);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--brand-dark);
    font-weight: 700;
    border: 1.5px solid rgba(14, 159, 110, .4);
    border-radius: 999px;
    padding: 12px 24px;
    font-size: 15px;
    transition: all .3s ease;
  }

  .btn-outline:hover {
    background: rgba(14, 159, 110, .08);
    border-color: var(--brand);
  }

  .input-search {
    background: #F2F6F4;
    border: 1.5px solid transparent;
    border-radius: 999px;
    padding: 9px 16px 9px 36px;
    font-size: 13px;
    color: var(--text);
    outline: none;
    transition: border-color .25s, box-shadow .25s, background .25s;
  }

  .input-search:focus {
    border-color: var(--brand);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(14, 159, 110, .12);
  }

  .hero-section {
    position: relative;
    background: linear-gradient(135deg, rgba(14, 159, 110, .94) 0%, rgba(22, 199, 154, .9) 55%, rgba(56, 224, 184, .84) 100%);
    color: #fff;
    overflow: hidden;
  }

  .hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: .28;
  }

  .hero-section::after {
    content: '';
    position: absolute;
    top: -160px;
    right: -120px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .1);
    border: 2px solid rgba(255, 255, 255, .18);
  }

  .hero-content {
    position: relative;
    z-index: 2;
  }

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

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

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
    padding: 3px 10px;
  }

  .badge-light {
    background: rgba(14, 159, 110, .1);
    color: var(--brand-dark);
  }

  .badge-accent {
    background: rgba(255, 138, 0, .12);
    color: #B85C00;
  }

  .badge-dark {
    background: rgba(15, 31, 28, .08);
    color: var(--ink);
  }

  .section-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.3;
  }

  @media (min-width: 768px) {
    .section-title {
      font-size: 36px;
    }
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--brand-dark);
    background: rgba(14, 159, 110, .08);
    border-radius: 999px;
    padding: 6px 14px;
  }

  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    transition: box-shadow .3s, border-color .3s;
  }

  .faq-item.open {
    border-color: rgba(14, 159, 110, .35);
    box-shadow: 0 8px 24px rgba(15, 31, 28, .06);
  }

  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    text-align: left;
    padding: 18px 20px;
    font-size: 15px;
    font-weight: 700;
    color: var(--ink);
    background: transparent;
    border: none;
  }

  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(14, 159, 110, .1);
    color: var(--brand-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform .3s, background .3s;
  }

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

  .faq-a {
    max-height: 0;
    overflow: hidden;
    padding: 0 20px;
    transition: max-height .35s ease, padding .35s ease;
  }

  .faq-item.open .faq-a {
    max-height: 300px;
    padding: 0 20px 18px;
  }

  .footer-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, .6);
    padding: 4px 0;
    transition: color .25s, transform .25s;
  }

  .footer-link:hover {
    color: #fff;
    transform: translateX(3px);
  }

  .scroll-row {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 12px;
    scroll-snap-type: x mandatory;
  }

  .scroll-row>* {
    flex: 0 0 280px;
    scroll-snap-align: start;
  }

  .scroll-row::-webkit-scrollbar {
    height: 6px;
  }

  .scroll-row::-webkit-scrollbar-thumb {
    background: #CBDCD5;
    border-radius: 99px;
  }

  .mobile-toggle {
    display: none;
  }

  @media (max-width: 1023px) {
    .desktop-nav,
    .desktop-actions {
      display: none !important;
    }

    .mobile-toggle {
      display: flex;
    }
  }

/* roulang page: category2 */
:root {
            --brand: #0E9F6E;
            --brand-dark: #0C7A55;
            --accent: #FF8A00;
            --bg: #F7F9F9;
            --text: #1E293B;
            --text-weak: #64748B;
            --border: #E2E8F0;
            --card-radius: 24px;
            --shadow-sm: 0 2px 8px rgba(15, 31, 28, .06);
            --shadow-lg: 0 16px 40px rgba(15, 31, 28, .12);
            --gradient: linear-gradient(135deg, #0E9F6E 0%, #16C79A 50%, #38E0B8 100%);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-x {
                padding: 0 16px;
            }
        }

        /* Brand gradient */
        .brand-gradient {
            background: var(--gradient);
        }

        .brand-gradient-text {
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            background: var(--gradient);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            transition: all .3s ease;
            box-shadow: 0 4px 14px rgba(14, 159, 110, .3);
        }

        .btn-primary:hover {
            box-shadow: 0 8px 24px rgba(14, 159, 110, .42);
            transform: translateY(-1px);
            filter: brightness(1.05);
        }

        .btn-primary:active {
            transform: scale(.97);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            border: 2px solid var(--brand);
            color: var(--brand);
            font-weight: 600;
            font-size: 14px;
            background: transparent;
            transition: all .3s ease;
        }

        .btn-outline:hover {
            background: rgba(14, 159, 110, .08);
            border-color: var(--brand-dark);
            color: var(--brand-dark);
        }

        .btn-outline:active {
            transform: scale(.97);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            transition: all .3s ease;
            box-shadow: 0 4px 16px rgba(255, 138, 0, .35);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 138, 0, .42);
        }

        .btn-accent:active {
            transform: scale(.96);
        }

        /* Search input */
        .input-search {
            height: 40px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #F8FAFC;
            padding: 0 14px 0 38px;
            font-size: 13px;
            color: var(--text);
            transition: all .3s ease;
        }

        .input-search::placeholder {
            color: #94A3B8;
        }

        .input-search:focus {
            border-color: var(--brand);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(14, 159, 110, .12);
        }

        /* Navigation */
        .desktop-nav .nav-link {
            position: relative;
            padding: 6px 2px;
            font-weight: 500;
            color: #475569;
            transition: color .25s;
        }

        .desktop-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
            transition: width .3s ease;
        }

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

        .desktop-nav .nav-link:hover::after,
        .desktop-nav .nav-link.active::after {
            width: 100%;
        }

        .desktop-nav .nav-link.active {
            color: var(--brand);
            font-weight: 600;
        }

        /* Cards */
        .card-hover {
            transition: all .35s ease;
        }

        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        /* Section badge */
        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(14, 159, 110, .1);
            color: var(--brand);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .05em;
        }

        /* Data badge */
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .92);
            font-size: 11px;
            font-weight: 600;
            color: #334155;
            box-shadow: 0 2px 8px rgba(15, 31, 28, .08);
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 16px;
            background: #fff;
            transition: box-shadow .3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            cursor: pointer;
            user-select: none;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(14, 159, 110, .1);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
            transition: transform .3s ease;
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.8;
            display: none;
        }

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

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: var(--brand);
            color: #fff;
        }

        /* Plan card */
        .plan-card {
            position: relative;
            background: #fff;
            border-radius: 24px;
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: all .35s ease;
        }

        .plan-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .plan-card.featured {
            border: 2px solid var(--brand);
            box-shadow: 0 12px 32px rgba(14, 159, 110, .15);
        }

        .plan-card.featured::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--gradient);
            border-radius: 24px 24px 0 0;
        }

        /* Process step */
        .step-dot {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            background: var(--gradient);
            box-shadow: 0 6px 16px rgba(14, 159, 110, .3);
            flex-shrink: 0;
        }

        /* Timeline connector */
        .step-line {
            position: absolute;
            top: 24px;
            left: calc(16.666% + 24px);
            right: calc(16.666% + 24px);
            height: 2px;
            background: linear-gradient(90deg, rgba(14, 159, 110, .5), rgba(14, 159, 110, .1));
        }

        @media (max-width: 768px) {
            .step-line {
                display: none;
            }
        }

        /* Section title */
        .section-title {
            font-size: clamp(24px, 3.5vw, 38px);
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
        }

        .section-subtitle {
            color: var(--text-weak);
            font-size: 15px;
            max-width: 560px;
            line-height: 1.7;
        }

        /* Hero overlay */
        .hero-overlay {
            background: linear-gradient(120deg, rgba(15, 31, 28, .78) 0%, rgba(15, 31, 28, .45) 55%, rgba(14, 159, 110, .25) 100%);
        }

        /* Footer links */
        .footer-link {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: color .25s, padding-left .25s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        /* Mobile toggle */
        .mobile-toggle {
            display: none;
        }

        @media (max-width: 1024px) {
            .desktop-nav,
            .desktop-actions {
                display: none !important;
            }

            .mobile-toggle {
                display: flex;
            }
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }

        /* Stats gradient line */
        .stats-gradient-line {
            width: 100%;
            height: 3px;
            background: var(--gradient);
            border-radius: 3px;
        }

        /* Check list */
        .check-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 10px;
            font-size: 14px;
            color: #475569;
        }

        .check-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 1px;
            color: var(--brand);
            font-size: 14px;
        }

        /* Tag */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(14, 159, 110, .08);
            color: var(--brand);
            font-size: 12px;
            font-weight: 600;
        }

        .tag-yellow {
            background: rgba(247, 185, 85, .15);
            color: #C77A1E;
        }

        /* Testimonial scroll */
        .testimonial-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: var(--brand) transparent;
        }

        .testimonial-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .testimonial-scroll::-webkit-scrollbar-thumb {
            background: rgba(14, 159, 110, .3);
            border-radius: 99px;
        }

        .testimonial-card {
            min-width: 300px;
            max-width: 340px;
            background: #fff;
            border-radius: 20px;
            padding: 24px;
            border: 1px solid var(--border);
            transition: all .3s ease;
            flex-shrink: 0;
        }

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

/* roulang page: category3 */
:root {
        --brand: #0E9F6E;
        --brand-dark: #0C7A55;
        --brand-light: #E7F6EF;
        --accent: #FF8A00;
        --accent-light: #FFF3E8;
        --warn: #F7B955;
        --bg: #F7F9F9;
        --text: #1E293B;
        --text-light: #64748B;
        --border: #E2E8F0;
        --dark-footer: #0F1F1C;
        --radius-lg: 24px;
        --radius-md: 16px;
        --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
        --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
    }

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

    a {
        text-decoration: none;
        color: inherit;
        transition: all 300ms;
    }

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

    input:focus,
    button:focus,
    a:focus {
        outline: 2px solid var(--brand);
        outline-offset: 2px;
    }

    .container-x {
        max-width: 1280px;
        margin: 0 auto;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    @media (max-width: 640px) {
        .container-x {
            padding-left: 1rem;
            padding-right: 1rem;
        }
    }

    .brand-gradient {
        background: linear-gradient(135deg, #0E9F6E 0%, #16C79A 50%, #38E0B8 100%);
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        padding: 0.75rem 1.75rem;
        font-weight: 700;
        font-size: 0.95rem;
        color: #fff;
        border-radius: 9999px;
        background: linear-gradient(135deg, #0E9F6E, #16C79A);
        transition: all 300ms;
        box-shadow: 0 4px 14px rgba(14, 159, 110, 0.3);
        white-space: nowrap;
    }

    .btn-primary:hover {
        box-shadow: 0 6px 20px rgba(14, 159, 110, 0.4);
        transform: translateY(-2px);
        filter: brightness(1.05);
    }

    .btn-primary:active {
        transform: scale(0.95);
    }

    .btn-outline {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        padding: 0.75rem 1.75rem;
        font-weight: 600;
        font-size: 0.95rem;
        color: var(--brand);
        border: 1.5px solid var(--brand);
        border-radius: 9999px;
        background: transparent;
        transition: all 300ms;
        white-space: nowrap;
    }

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

    .btn-outline:active {
        transform: scale(0.95);
    }

    .btn-outline-light {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        padding: 0.75rem 1.75rem;
        font-weight: 600;
        font-size: 0.95rem;
        color: #fff;
        border: 1.5px solid rgba(255, 255, 255, 0.6);
        border-radius: 9999px;
        background: transparent;
        transition: all 300ms;
        white-space: nowrap;
    }

    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.15);
        border-color: #fff;
        transform: translateY(-2px);
    }

    .nav-link {
        position: relative;
        color: #475569;
        font-weight: 500;
        transition: color 300ms;
        padding-bottom: 4px;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--brand);
        border-radius: 2px;
        transition: width 300ms;
    }

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

    .nav-link:hover::after {
        width: 100%;
    }

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

    .nav-link.active::after {
        width: 100%;
    }

    .input-search {
        border-radius: 9999px;
        border: 1px solid var(--border);
        padding: 0.5rem 1rem 0.5rem 2.5rem;
        font-size: 0.875rem;
        background: var(--bg);
        transition: all 300ms;
        color: var(--text);
    }

    .input-search::placeholder {
        color: #94A3B8;
    }

    .input-search:focus {
        outline: none;
        border-color: var(--brand);
        box-shadow: 0 0 0 3px rgba(14, 159, 110, 0.15);
        background: #fff;
    }

    .mobile-toggle {
        display: none;
    }

    @media (max-width: 1023px) {
        .mobile-toggle {
            display: flex;
        }
        .desktop-nav {
            display: none;
        }
        .desktop-actions {
            display: none;
        }
    }

    @media (min-width: 1024px) {
        #mobileMenu {
            display: none !important;
        }
    }

    .guide-card {
        background: #fff;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        overflow: hidden;
        transition: all 300ms;
        display: flex;
        flex-direction: column;
    }

    .guide-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-5px);
    }

    .guide-card-img {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16 / 10;
    }

    .guide-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 600ms;
    }

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

    .guide-card-img::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 60%, rgba(15, 23, 42, 0.55) 100%);
        pointer-events: none;
    }

    .badge {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        padding: 0.25rem 0.75rem;
        border-radius: 9999px;
        font-size: 0.75rem;
        font-weight: 600;
        line-height: 1.4;
    }

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

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

    .badge-slate {
        background: rgba(255, 255, 255, 0.15);
        color: #fff;
        backdrop-filter: blur(4px);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .badge-white {
        background: #fff;
        color: var(--brand-dark);
        box-shadow: var(--shadow-sm);
    }

    .footer-link {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        color: rgba(255, 255, 255, 0.6);
        transition: all 300ms;
        font-size: 0.875rem;
    }

    .footer-link:hover {
        color: #fff;
        transform: translateX(4px);
    }

    .faq-item {
        background: #fff;
        border-radius: 16px;
        border: 1px solid var(--border);
        overflow: hidden;
        transition: all 300ms;
    }

    .faq-item.open {
        box-shadow: var(--shadow-sm);
        border-color: var(--brand);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 400ms ease;
    }

    .faq-question:hover {
        background: #F8FAFA;
    }

    .step-card {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-lg);
        padding: 2rem 1.75rem;
        text-align: center;
        transition: all 300ms;
        position: relative;
        overflow: hidden;
    }

    .step-card:hover {
        background: rgba(255, 255, 255, 0.08);
        transform: translateY(-4px);
        border-color: rgba(14, 159, 110, 0.5);
    }

    .step-num {
        font-size: 3rem;
        font-weight: 800;
        color: rgba(255, 255, 255, 0.1);
        position: absolute;
        top: 0.5rem;
        right: 1rem;
        line-height: 1;
    }

    .sidebar-card {
        background: #fff;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        overflow: hidden;
        transition: all 300ms;
    }

    .sidebar-card:hover {
        box-shadow: var(--shadow-sm);
    }

    .tag-chip {
        display: inline-block;
        padding: 0.35rem 0.9rem;
        border-radius: 9999px;
        font-size: 0.8rem;
        font-weight: 500;
        background: var(--bg);
        border: 1px solid var(--border);
        color: var(--text-light);
        transition: all 300ms;
        cursor: pointer;
    }

    .tag-chip:hover {
        background: var(--brand-light);
        border-color: var(--brand);
        color: var(--brand-dark);
    }

    .popular-item {
        display: flex;
        align-items: center;
        gap: 1rem;
        padding: 0.75rem 0;
        border-bottom: 1px dashed var(--border);
        transition: all 300ms;
    }

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

    .popular-item:hover {
        padding-left: 0.5rem;
    }

    .popular-num {
        font-size: 1.25rem;
        font-weight: 800;
        color: var(--brand);
        min-width: 2rem;
        text-align: center;
        opacity: 0.7;
    }

    .section-head {
        margin-bottom: 2.5rem;
    }

    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.05em;
        color: var(--brand-dark);
        background: var(--brand-light);
        padding: 0.3rem 1rem;
        border-radius: 9999px;
        margin-bottom: 0.75rem;
    }

    .hero-pattern {
        position: absolute;
        border-radius: 50%;
        pointer-events: none;
    }

    .hero-pattern-1 {
        width: 320px;
        height: 320px;
        border: 2px solid rgba(255, 255, 255, 0.12);
        top: -100px;
        right: -80px;
    }

    .hero-pattern-2 {
        width: 160px;
        height: 160px;
        border: 2px solid rgba(255, 255, 255, 0.08);
        bottom: 40px;
        right: 240px;
    }

    @media (max-width: 768px) {
        .hero-pattern-1 {
            width: 180px;
            height: 180px;
        }
        .hero-pattern-2 {
            width: 100px;
            height: 100px;
            right: 20px;
            bottom: 20px;
        }
    }