/* roulang page: index */
:root {
    --color-bg: #0B0D12;
    --color-surface: #151A22;
    --color-surface-hover: #1E242E;
    --color-primary: #FF6B2C;
    --color-secondary: #FF4B6E;
    --color-gold: #F5D580;
    --color-text: #FFFFFF;
    --color-text-secondary: #E2E8F0;
    --color-text-muted: #94A3B8;
    --color-text-faint: #64748B;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 4px 20px rgba(0,0,0,0.2);
    --shadow-card-hover: 0 8px 30px rgba(0,0,0,0.35);
  }
  html {
    scroll-behavior: smooth;
    overflow-x: hidden;
  }
  body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: system-ui, -apple-system, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  * {
    box-sizing: border-box;
  }
  img {
    display: block;
    max-width: 100%;
  }
  a {
    text-decoration: none;
    transition: color .2s ease;
  }
  summary::-webkit-details-marker {
    display: none;
  }
  summary {
    list-style: none;
  }
  .container-site {
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
  }
  @media (min-width: 768px) {
    .container-site {
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
  }
  .section {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
  @media (min-width: 768px) {
    .section {
      padding-top: 6rem;
      padding-bottom: 6rem;
    }
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    border-radius: 10px;
    font-weight: 700;
    transition: all .2s ease;
    cursor: pointer;
  }
  .btn-primary {
    background-image: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    padding: .75rem 1.5rem;
    box-shadow: 0 4px 16px rgba(255,107,44,.25);
  }
  .btn-primary:hover {
    filter: brightness(1.08);
    box-shadow: 0 8px 24px rgba(255,107,44,.35);
    transform: translateY(-1px);
  }
  .btn-primary:active {
    transform: scale(.96);
  }
  .btn-primary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255,255,255,.5);
  }
  .btn-ghost {
    background: transparent;
    border: 1px solid rgba(255,255,255,.2);
    color: rgba(255,255,255,.9);
    padding: .6rem 1.25rem;
  }
  .btn-ghost:hover {
    background: rgba(255,255,255,.08);
    border-color: rgba(255,255,255,.35);
    transform: translateY(-1px);
  }
  .card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    transition: all .3s ease;
  }
  .card:hover {
    background: var(--color-surface-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
  }
  .badge {
    display: inline-block;
    border-radius: 9999px;
    padding: .25rem .75rem;
    font-size: .75rem;
    font-weight: 600;
    line-height: 1.2;
  }
  .badge-primary {
    background: rgba(255,107,44,.12);
    color: #FF6B2C;
  }
  .badge-gold {
    background: rgba(245,213,128,.12);
    color: #F5D580;
  }
  .chip {
    display: inline-block;
    border-radius: 9999px;
    padding: .25rem .75rem;
    font-size: .75rem;
    background: rgba(255,107,44,.1);
    color: #FF6B2C;
  }
  .input {
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 10px;
    padding: .7rem 1rem;
    color: #fff;
    transition: border-color .2s, box-shadow .2s;
  }
  .input::placeholder {
    color: #64748B;
  }
  .input:focus {
    outline: none;
    border-color: rgba(255,107,44,.5);
    box-shadow: 0 0 0 3px rgba(255,107,44,.15);
  }
  .nav-link {
    position: relative;
    color: rgba(255,255,255,.6);
    font-size: .9rem;
    font-weight: 500;
    padding: .5rem .25rem;
    transition: color .2s;
  }
  .nav-link:hover {
    color: #fff;
  }
  .nav-link.active {
    color: #fff;
  }
  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 999px;
    background-image: linear-gradient(90deg, #FF6B2C, #FF4B6E);
  }
  .badge-stat {
    background: rgba(255,255,255,.05);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 16px;
    padding: .75rem;
    text-align: center;
  }
  .truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .footer-link {
    color: rgba(255,255,255,.6);
    transition: color .2s;
  }
  .footer-link:hover {
    color: #fff;
  }
  .faq-item {
    background: var(--color-surface);
    border-radius: 12px;
  }
  .faq-item[open] {
    border-left: 3px solid var(--color-primary);
  }

/* roulang page: category1 */
:root {
    --bg-primary: #0B0D12;
    --bg-card: #151A22;
    --bg-card-hover: #1E242E;
    --brand-orange: #FF6B2C;
    --brand-pink: #FF4B6E;
    --brand-gold: #F5D580;
    --text-main: #FFFFFF;
    --text-secondary: #E2E8F0;
    --text-muted: #94A3B8;
    --text-dim: #64748B;
    --border-subtle: rgba(255, 255, 255, .08);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 4px 20px rgba(0, 0, 0, .2);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, .35);
  }

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

  html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
  }

  body {
    font-family: system-ui, -apple-system, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.6;
  }

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

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

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

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

  /* ===== Header ===== */
  .header-shell {
    background: rgba(11, 13, 18, .82);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-link {
    color: rgba(255, 255, 255, .6);
    transition: color .2s ease;
    position: relative;
  }

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

  .nav-link.active {
    color: #fff;
    font-weight: 600;
  }

  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--brand-orange), var(--brand-pink));
  }

  .search-box {
    display: flex;
    align-items: center;
    gap: .5rem;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius-sm);
    padding: .5rem .75rem;
    transition: border-color .25s ease;
    width: 100%;
  }

  .search-box:hover,
  .search-box:focus-within {
    border-color: rgba(255, 107, 44, .5);
  }

  .search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: .875rem;
    width: 100%;
  }

  .search-box input::placeholder {
    color: var(--text-dim);
  }

  .kbd-badge {
    font-size: 10px;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 4px;
    padding: 2px 5px;
    color: rgba(255, 255, 255, .45);
    flex-shrink: 0;
  }

  /* ===== Buttons ===== */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    background: linear-gradient(135deg, var(--brand-orange), var(--brand-pink));
    color: #fff;
    font-weight: 700;
    border-radius: var(--radius-sm);
    padding: .8rem 1.6rem;
    transition: all .3s ease;
    border: none;
    cursor: pointer;
    white-space: nowrap;
  }

  .btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 10px 28px rgba(255, 107, 44, .35);
    transform: translateY(-1px);
  }

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

  .btn-primary:focus-visible {
    outline: 2px solid rgba(255, 255, 255, .6);
    outline-offset: 2px;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, .2);
    color: rgba(255, 255, 255, .9);
    border-radius: var(--radius-sm);
    padding: .7rem 1.4rem;
    transition: all .3s ease;
    cursor: pointer;
    white-space: nowrap;
  }

  .btn-secondary:hover {
    background: rgba(255, 255, 255, .08);
    border-color: rgba(255, 255, 255, .4);
  }

  .btn-secondary:focus-visible {
    outline: 2px solid rgba(255, 255, 255, .4);
    outline-offset: 2px;
  }

  /* ===== Cards ===== */
  .brand-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    transition: all .3s ease;
  }

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

  .feature-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    padding: 1.75rem;
    transition: all .3s ease;
    height: 100%;
  }

  .feature-card:hover {
    transform: translateY(-2px);
    background: var(--bg-card-hover);
    border-color: rgba(255, 107, 44, .35);
    box-shadow: var(--shadow-hover);
  }

  .type-card {
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 1.5rem;
    transition: all .3s ease;
    height: 100%;
  }

  .type-card:hover {
    border-color: rgba(245, 213, 128, .45);
    transform: translateY(-2px);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-hover);
  }

  /* ===== Chips ===== */
  .chip {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: .25rem .75rem;
    font-size: .75rem;
    font-weight: 600;
    line-height: 1.4;
  }

  .chip-brand {
    background: rgba(255, 107, 44, .15);
    color: #ff8a55;
  }

  .chip-gold {
    background: rgba(245, 213, 128, .14);
    color: var(--brand-gold);
  }

  .chip-blue {
    background: rgba(96, 165, 250, .14);
    color: #93c5fd;
  }

  /* ===== Stats ===== */
  .stat-badge {
    background: rgba(255, 255, 255, .05);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: var(--radius-md);
    padding: 1.25rem 1rem;
    text-align: center;
    transition: all .3s ease;
  }

  .stat-badge:hover {
    border-color: rgba(245, 213, 128, .35);
    transform: translateY(-2px);
  }

  .stat-number {
    color: var(--brand-gold);
    font-weight: 900;
    letter-spacing: -.02em;
  }

  /* ===== FAQ ===== */
  .faq-item {
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid transparent;
    transition: border-color .25s ease, background .25s ease;
    overflow: hidden;
  }

  .faq-item.active {
    border-color: rgba(255, 107, 44, .4);
    background: #181e27;
  }

  .faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.1rem 1.25rem;
    text-align: left;
    color: #fff;
    font-weight: 500;
    cursor: pointer;
    background: transparent;
    border: none;
    transition: background .2s;
  }

  .faq-question:hover {
    background: rgba(255, 255, 255, .03);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
  }

  .faq-answer-inner {
    padding: 0 1.25rem 1.25rem;
    color: var(--text-muted);
    line-height: 1.85;
    font-size: .9rem;
  }

  .faq-item.active .faq-icon {
    transform: rotate(45deg);
  }

  .faq-icon {
    transition: transform .3s ease;
    display: inline-flex;
  }

  /* ===== Hero ===== */
  .hero-bg {
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    position: relative;
  }

  .hero-overlay {
    background: linear-gradient(100deg, rgba(11, 13, 18, .97) 15%, rgba(11, 13, 18, .82) 50%, rgba(11, 13, 18, .4) 90%);
  }

  /* ===== Footer ===== */
  .footer-link {
    color: rgba(255, 255, 255, .6);
    transition: color .2s ease;
  }

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

  /* ===== Section ===== */
  .section-pad {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  @media (min-width: 768px) {
    .section-pad {
      padding-top: 6rem;
      padding-bottom: 6rem;
    }
  }

  .section-title {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -.01em;
    line-height: 1.25;
  }

  @media (min-width: 768px) {
    .section-title {
      font-size: 2.25rem;
    }
  }

  .section-sub {
    color: var(--text-muted);
    font-size: .925rem;
    line-height: 1.7;
  }

  @media (min-width: 768px) {
    .section-sub {
      font-size: 1rem;
    }
  }

  /* ===== Flow steps ===== */
  .step-dot {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--brand-orange), var(--brand-pink));
    color: #fff;
    font-weight: 900;
    font-size: 1.05rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(255, 107, 44, .3);
  }

  /* ===== Featured cards ===== */
  .featured-thumb {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
  }

  .featured-thumb img {
    transition: transform .4s ease;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

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

  /* ===== Responsive ===== */
  @media (max-width: 639px) {
    .stat-badge {
      padding: 1rem .75rem;
    }

    .stat-number {
      font-size: 1.6rem;
    }

    .feature-card,
    .type-card {
      padding: 1.25rem;
    }
  }

/* roulang page: article */
:root {
    --bg-primary: #0B0D12;
    --bg-soft: #0D1016;
    --bg-card: #151A22;
    --bg-card-hover: #1E242E;
    --brand-1: #FF6B2C;
    --brand-2: #FF4B6E;
    --gold: #F5D580;
    --text-primary: #FFFFFF;
    --text-secondary: #E2E8F0;
    --text-muted: #94A3B8;
    --text-faint: #64748B;
    --border-light: rgba(255, 255, 255, 0.06);
    --border-mid: rgba(255, 255, 255, 0.1);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 4px 20px rgb(0 0 0 / 0.2);
    --shadow-hover: 0 8px 30px rgb(0 0 0 / 0.35);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: system-ui, -apple-system, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

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

  input,
  button {
    font-family: inherit;
  }

  .container-site {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
  }

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

  .nav-link {
    position: relative;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.25s ease;
    padding: 0.5rem 0;
  }

  .nav-link:hover {
    color: rgba(255, 255, 255, 0.95);
  }

  .nav-link.active {
    color: #fff;
    font-weight: 600;
  }

  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    border-radius: 9999px;
    background: linear-gradient(90deg, var(--brand-1), var(--brand-2));
  }

  .nav-mobile-link {
    display: block;
    padding: 0.65rem 0.75rem;
    border-radius: 10px;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.875rem;
    transition: all 0.2s ease;
  }

  .nav-mobile-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
  }

  .nav-mobile-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-weight: 600;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    color: #fff;
    font-weight: 700;
    font-size: 0.875rem;
    line-height: 1;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgb(255 107 44 / 0.25);
    border: none;
    cursor: pointer;
    white-space: nowrap;
  }

  .btn-primary:hover {
    filter: brightness(1.08);
    box-shadow: 0 6px 20px rgb(255 107 44 / 0.35);
    transform: translateY(-1px);
  }

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

  .btn-primary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgb(255 255 255 / 0.3), 0 6px 20px rgb(255 107 44 / 0.35);
  }

  .btn-compact {
    padding: 0.5rem 1.25rem;
    font-size: 0.8125rem;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: nowrap;
  }

  .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
  }

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

  .btn-secondary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgb(255 255 255 / 0.25);
  }

  .badge-gold {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: rgb(245 213 128 / 0.12);
    border: 1px solid rgb(245 213 128 / 0.3);
    color: var(--gold);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.3rem 0.75rem;
    border-radius: 9999px;
    letter-spacing: 0.02em;
  }

  .badge-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.14);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.3rem 0.75rem;
    border-radius: 9999px;
  }

  .card-hover {
    transition: all 0.3s ease;
    box-shadow: var(--shadow-card);
  }

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

  .recommend-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
  }

  .recommend-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(255, 107, 44, 0.25);
  }

  .recommend-card img {
    transition: transform 0.5s ease;
  }

  .recommend-card:hover img {
    transform: scale(1.03);
  }

  .footer-link {
    color: rgba(255, 255, 255, 0.55);
    transition: color 0.2s ease;
  }

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

  .cms-content {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--text-secondary);
  }

  @media (min-width: 768px) {
    .cms-content {
      font-size: 1.0625rem;
      line-height: 2;
    }
  }

  .cms-content p {
    margin: 0 0 1.5rem;
  }

  .cms-content h2,
  .cms-content h3,
  .cms-content h4 {
    color: #fff;
    font-weight: 700;
    line-height: 1.4;
    margin: 2.5rem 0 1rem;
  }

  .cms-content h2 {
    font-size: 1.5rem;
  }

  .cms-content h3 {
    font-size: 1.25rem;
  }

  .cms-content h4 {
    font-size: 1.125rem;
  }

  .cms-content a {
    color: var(--brand-1);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s ease;
  }

  .cms-content a:hover {
    color: var(--brand-2);
  }

  .cms-content ul,
  .cms-content ol {
    margin: 0 0 1.5rem;
    padding-left: 1.25rem;
    color: var(--text-secondary);
  }

  .cms-content ul {
    list-style: disc;
  }

  .cms-content ol {
    list-style: decimal;
  }

  .cms-content li {
    margin-bottom: 0.5rem;
  }

  .cms-content img {
    border-radius: var(--radius-md);
    margin: 2rem auto;
    height: auto;
  }

  .cms-content figure {
    margin: 2rem 0;
  }

  .cms-content figcaption {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
  }

  .cms-content blockquote {
    border-left: 4px solid var(--brand-1);
    background: var(--bg-card);
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
  }

  .cms-content blockquote p {
    margin-bottom: 0;
  }

  .cms-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.875rem;
  }

  .cms-content th,
  .cms-content td {
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.75rem 1rem;
    text-align: left;
  }

  .cms-content th {
    background: rgba(255, 255, 255, 0.04);
    color: #fff;
    font-weight: 600;
  }

  .cms-content hr {
    border: none;
    border-top: 1px solid var(--border-light);
    margin: 2rem 0;
  }

/* roulang page: category2 */
:root {
            --bg: #0B0D12;
            --card: #151A22;
            --card-hover: #1E242E;
            --primary-1: #FF6B2C;
            --primary-2: #FF4B6E;
            --gold: #F5D580;
            --white: #FFFFFF;
            --text-sub: #E2E8F0;
            --text-muted: #94A3B8;
            --text-faint: #64748B;
            --border-white: rgba(255, 255, 255, 0.08);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 4px 20px rgb(0 0 0 / 0.2);
            --shadow-hover: 0 8px 30px rgb(0 0 0 / 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background-color: var(--bg);
            color: var(--white);
            font-family: 'system-ui', '-apple-system', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
        }

        .container-site {
            width: 100%;
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

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

        .nav-link {
            position: relative;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 0.375rem 0;
            font-weight: 500;
            transition: color .25s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-1), var(--primary-2));
            transition: width .25s ease;
        }

        .nav-link:hover {
            color: rgba(255, 255, 255, 1);
        }

        .nav-link.active {
            color: #fff;
        }

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

        .footer-link {
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--primary-1), var(--primary-2));
            color: #fff;
            font-weight: 700;
            font-size: 0.925rem;
            border-radius: 10px;
            padding: 0.75rem 1.5rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 14px rgba(255, 107, 44, 0.35);
        }

        .btn-primary:hover {
            filter: brightness(1.12);
            box-shadow: 0 8px 26px rgba(255, 75, 110, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.96);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.6);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 600;
            font-size: 0.925rem;
            border-radius: 10px;
            padding: 0.7rem 1.375rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-secondary:active {
            transform: scale(0.96);
        }

        .chip-gold {
            display: inline-block;
            background: rgba(245, 213, 128, 0.14);
            color: var(--gold);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 1rem;
            border-radius: 999px;
            border: 1px solid rgba(245, 213, 128, 0.25);
            letter-spacing: 0.02em;
        }

        .card-site {
            background: var(--card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

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

        .stat-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            padding: 1.25rem 0.75rem;
            text-align: center;
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(245, 213, 128, 0.3);
        }

        .gradient-text {
            background: linear-gradient(90deg, var(--primary-1), var(--primary-2));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

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

        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 16px;
            padding: 1.1rem 1.25rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .faq-item.active {
            border-color: rgba(255, 107, 44, 0.45);
        }

        .faq-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(180deg, var(--primary-1), var(--primary-2));
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            opacity: 0;
            transition: max-height 0.4s ease, opacity 0.3s ease, margin 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            opacity: 1;
            margin-top: 0.75rem;
        }

        .faq-icon {
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .pagination-btn {
            min-width: 2.25rem;
            height: 2.25rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            font-size: 0.875rem;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: rgba(255, 255, 255, 0.7);
            transition: all 0.25s ease;
            cursor: pointer;
        }

        .pagination-btn:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.35);
        }

        .pagination-btn.active {
            background: linear-gradient(135deg, var(--primary-1), var(--primary-2));
            border-color: transparent;
            color: #fff;
            font-weight: 700;
        }

        .pagination-btn.disabled {
            opacity: 0.35;
            cursor: not-allowed;
            pointer-events: none;
        }

        .card-cover {
            position: relative;
            overflow: hidden;
            border-radius: 16px;
        }

        .card-cover img {
            transition: transform 0.5s ease;
            width: 100%;
        }

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

        .section-gap {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }

        @media (min-width: 768px) {
            .section-gap {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

        .input-site {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 0.8rem 1rem;
            color: #fff;
            width: 100%;
            transition: all 0.3s ease;
        }

        .input-site::placeholder {
            color: var(--text-faint);
        }

        .input-site:focus {
            outline: none;
            border-color: rgba(255, 107, 44, 0.5);
            background: rgba(255, 255, 255, 0.07);
            box-shadow: 0 0 0 3px rgba(255, 107, 44, 0.15);
        }

        .step-item {
            position: relative;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            padding: 2rem 1.5rem;
            transition: all 0.3s ease;
        }

        .step-item:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(245, 213, 128, 0.25);
            transform: translateY(-3px);
        }

        .step-num {
            width: 2.75rem;
            height: 2.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--primary-1), var(--primary-2));
            color: #fff;
            font-weight: 900;
            font-size: 1.1rem;
            margin-bottom: 1rem;
            box-shadow: 0 6px 16px rgba(255, 107, 44, 0.35);
        }

        .mobile-nav {
            display: none;
        }

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

        @media (max-width: 767px) {
            .desktop-search {
                display: none;
            }
        }