/* roulang page: index */
:root {
    --pri: #f97316;
    --pri-dark: #ea580c;
    --ink: #0f172a;
    --muted: #64748b;
    --bg: #ffffff;
    --soft: #f8fafc;
    --line: #e2e8f0;
    --radius: 20px;
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
    --shadow-hover: 0 16px 48px rgba(15, 23, 42, 0.12);
  }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  ::selection { background: rgba(249, 115, 22, 0.2); color: #7c2d12; }

  .container-custom {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .nav-link {
    position: relative;
    color: var(--ink);
    font-weight: 500;
    padding: 0.5rem 0;
    transition: color 0.25s ease;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 3px;
    border-radius: 999px;
    background: var(--pri);
    transition: transform 0.3s ease;
    transform-origin: center;
  }
  .nav-link:hover { color: var(--pri-dark); }
  .nav-link:hover::after { transform: translateX(-50%) scaleX(1); }
  .nav-link.active { color: var(--pri-dark); font-weight: 600; }
  .nav-link.active::after { transform: translateX(-50%) scaleX(1); }

  .hero-wrap {
    background:
      linear-gradient(135deg, rgba(15, 23, 42, 0.82) 0%, rgba(15, 23, 42, 0.55) 50%, rgba(249, 115, 22, 0.35) 100%),
      url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  }

  .hero-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 24px;
  }

  .section-title {
    font-size: 2.1rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--ink);
  }
  .section-subtitle {
    font-size: 1rem;
    color: var(--muted);
    max-width: 620px;
  }
  .title-mark {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--pri-dark);
    text-transform: uppercase;
  }
  .title-mark::before {
    content: '';
    width: 28px;
    height: 2px;
    background: var(--pri);
    border-radius: 2px;
    display: inline-block;
  }

  .card-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .card-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(249, 115, 22, 0.35);
  }

  .cover-img {
    border-radius: 16px;
    object-fit: cover;
    width: 100%;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .card-cover:hover .cover-img { transform: scale(1.05); }
  .card-cover .overflow-hidden { overflow: hidden; }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--pri);
    color: #fff;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.9rem 2rem;
    box-shadow: 0 8px 30px rgba(249, 115, 22, 0.35);
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
  }
  .btn-primary:hover {
    background: var(--pri-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(234, 88, 12, 0.4);
  }
  .btn-primary:active { transform: translateY(0); }
  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.9rem 2rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
  }
  .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
  }
  .btn-white {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: #fff;
    color: var(--ink);
    font-weight: 600;
    border-radius: 999px;
    padding: 0.8rem 1.8rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
  }
  .btn-white:hover {
    background: #f1f5f9;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  }

  .badge-tag {
    display: inline-block;
    background: rgba(249, 115, 22, 0.1);
    color: var(--pri-dark);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.8rem;
    border-radius: 999px;
    border: 1px solid rgba(249, 115, 22, 0.25);
  }

  .stat-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: background 0.3s ease;
  }
  .stat-card:hover { background: rgba(255, 255, 255, 0.1); }

  .step-num {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: var(--pri);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35);
  }

  .faq-item {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .faq-item:hover {
    border-color: rgba(249, 115, 22, 0.4);
    box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
  }
  .faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
  }
  .faq-question i { color: var(--pri); transition: transform 0.3s ease; }
  .faq-item.open .faq-question i { transform: rotate(180deg); }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    padding: 0 1.5rem;
    color: var(--muted);
  }
  .faq-item.open .faq-answer { max-height: 400px; padding-bottom: 1.25rem; }

  .cta-wrap {
    background:
      linear-gradient(120deg, rgba(249, 115, 22, 0.92) 0%, rgba(234, 88, 12, 0.88) 100%),
      url('/assets/images/backpic/back-2.png') center / cover;
    border-radius: 32px;
  }

  .footer-link {
    color: #94a3b8;
    transition: color 0.25s ease;
    display: inline-block;
    padding: 0.2rem 0;
  }
  .footer-link:hover { color: #f97316; }

  .nav-mobile {
    display: none;
  }

  .list-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--line);
    transition: all 0.3s ease;
  }
  .list-card:hover {
    border-color: rgba(249, 115, 22, 0.35);
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
    transform: translateX(4px);
  }
  .list-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(249, 115, 22, 0.12);
    color: var(--pri-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
  }

  @media (max-width: 768px) {
    .nav-desktop { display: none; }
    .nav-mobile { display: flex; }
    .section-title { font-size: 1.6rem; }
    .container-custom { padding-left: 1rem; padding-right: 1rem; }
  }

/* roulang page: category1 */
:root {
    --brand-50: #fff8ed;
    --brand-100: #ffedd5;
    --brand-500: #f97316;
    --brand-600: #ea580c;
    --ink: #0b1220;
    --line: #e5e9f0;
    --soft: #f6f8fb;
    --radius-lg: 20px;
    --radius-md: 16px;
    --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
  }

  html { scroll-behavior: smooth; }
  *, *::before, *::after { box-sizing: border-box; }
  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: #fff;
    color: #0f172a;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; height: auto; display: block; }
  a { text-decoration: none; color: inherit; transition: all .25s ease; }
  button { cursor: pointer; font-family: inherit; }

  .container-custom { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: 1.5rem; padding-right: 1.5rem; }
  @media (max-width: 640px) {
    .container-custom { padding-left: 1.125rem; padding-right: 1.125rem; }
  }

  /* ===== 导航 ===== */
  .nav-link { position: relative; font-size: .9rem; font-weight: 600; color: #475569; padding: .35rem 0; letter-spacing: .02em; }
  .nav-link::after { content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: linear-gradient(90deg, #f97316, #fb923c); border-radius: 2px; transition: width .3s ease; }
  .nav-link:hover { color: #ea580c; }
  .nav-link:hover::after { width: 100%; }
  .nav-link.active { color: #ea580c; }
  .nav-link.active::after { width: 100%; }
  .nav-mobile { display: none; }
  @media (max-width: 1024px) {
    .nav-desktop { display: none !important; }
    .nav-mobile { display: inline-flex; }
  }

  /* ===== 按钮 ===== */
  .btn-primary {
    display: inline-flex; align-items: center; gap: .5rem;
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: #fff; font-weight: 700; border-radius: 12px;
    padding: .8rem 1.6rem; font-size: .95rem; border: none;
    box-shadow: 0 8px 20px rgba(249, 115, 22, .25);
    transition: all .3s ease;
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(249, 115, 22, .35); }
  .btn-primary:active { transform: translateY(0); }
  .btn-outline {
    display: inline-flex; align-items: center; gap: .5rem;
    border: 1.5px solid #e2e8f0; color: #334155; font-weight: 600;
    border-radius: 12px; padding: .8rem 1.6rem; font-size: .95rem;
    background: #fff; transition: all .3s ease;
  }
  .btn-outline:hover { border-color: #f97316; color: #ea580c; background: #fff8ed; transform: translateY(-2px); }
  a:focus-visible, button:focus-visible { outline: 3px solid rgba(249, 115, 22, .4); outline-offset: 2px; border-radius: 6px; }

  /* ===== 卡片 ===== */
  .feature-card {
    border-radius: 20px; border: 1px solid #eef1f6; background: #fff;
    box-shadow: 0 4px 24px rgba(15, 23, 42, .05);
    transition: all .35s ease;
  }
  .feature-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(15, 23, 42, .1); }

  /* ===== 板块 ===== */
  .section-pad { padding: 5rem 0; }
  @media (max-width: 640px) { .section-pad { padding: 3.25rem 0; } }
  .section-title { font-size: clamp(1.7rem, 3.5vw, 2.4rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.2; }
  .section-sub { color: #64748b; font-size: 1.05rem; line-height: 1.75; }

  /* ===== 标签 ===== */
  .badge {
    display: inline-flex; align-items: center; gap: .35rem;
    background: #fff7ed; color: #ea580c; font-size: .8rem; font-weight: 600;
    padding: .3rem .9rem; border-radius: 999px; border: 1px solid #fed7aa;
  }

  /* ===== 指标条 ===== */
  .metric-bar { height: 8px; border-radius: 999px; background: #f1f5f9; overflow: hidden; }
  .metric-bar-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, #f97316, #fb923c); }

  /* ===== Hero 遮罩 ===== */
  .hero-overlay { background: linear-gradient(100deg, rgba(11,18,32,.94) 0%, rgba(11,18,32,.78) 55%, rgba(11,18,32,.35) 100%); }

  /* ===== 流程步骤 ===== */
  .step-num {
    position: relative; z-index: 1;
    width: 56px; height: 56px; margin: 0 auto;
    border-radius: 18px; background: linear-gradient(135deg, #f97316, #ea580c);
    color: #fff; font-size: 1.25rem; font-weight: 800;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 24px rgba(249, 115, 22, .28);
  }
  .step-line { position: relative; }
  .step-line::after {
    content: ''; position: absolute; top: 28px; left: calc(50% + 40px);
    width: calc(100% - 80px); border-top: 2px dashed #ffedd5; z-index: 0;
  }
  @media (max-width: 768px) { .step-line::after { display: none; } }

  /* ===== FAQ ===== */
  .faq-item { border: 1px solid #eef1f6; border-radius: 16px; background: #fff; transition: all .3s ease; }
  .faq-item.open { border-color: #fdba74; box-shadow: 0 8px 24px rgba(249, 115, 22, .08); }
  .faq-question { background: transparent; border: none; width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 1.25rem 1.5rem; text-align: left; font-weight: 600; color: #1e293b; }
  .faq-icon { width: 1.75rem; height: 1.75rem; flex-shrink: 0; display: flex; align-items: center; justify-content: center; border-radius: 999px; background: #f1f5f9; color: #64748b; font-size: .75rem; transition: all .3s ease; }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease; padding: 0 1.5rem; }
  .faq-item.open .faq-answer { max-height: 320px; padding: 0 1.5rem 1.25rem; }
  .faq-item.open .faq-icon { transform: rotate(45deg); background: #fff7ed; color: #ea580c; }

  /* ===== 页脚 ===== */
  .footer-link { color: #94a3b8; transition: all .25s ease; display: inline-block; }
  .footer-link:hover { color: #fb923c; padding-left: 4px; }

/* roulang page: article */
:root {
    --brand-500: #f97316;
    --brand-600: #ea580c;
    --brand-700: #c2410c;
    --ink: #1b1b1f;
    --soft: #f5f5f7;
    --line: #e8e8ec;
    --muted: #6b7280;
    --shadow-sm: 0 1px 2px rgba(27, 27, 31, .06);
    --shadow-md: 0 6px 24px rgba(27, 27, 31, .08);
    --shadow-lg: 0 18px 40px rgba(27, 27, 31, .10);
    --radius: 16px;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    background: #ffffff;
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  a:focus-visible,
  button:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--brand-500);
    outline-offset: 3px;
    border-radius: 6px;
  }

  .container-custom {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  @media (max-width: 576px) {
    .container-custom {
      padding-left: 16px;
      padding-right: 16px;
    }
  }

  .nav-desktop {
    display: flex;
    align-items: center;
    gap: 32px;
  }

  .nav-link {
    position: relative;
    font-size: 14px;
    font-weight: 500;
    color: #4b5563;
    padding: 6px 2px;
    letter-spacing: .02em;
    transition: color .2s ease;
  }

  .nav-link:hover {
    color: var(--brand-500);
  }

  .nav-link.active {
    color: var(--brand-500);
    font-weight: 600;
  }

  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    border-radius: 99px;
    background: var(--brand-500);
  }

  .nav-mobile {
    display: none;
  }

  @media (max-width: 768px) {
    .nav-desktop {
      display: none;
    }
    .nav-mobile {
      display: inline-flex;
    }
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: #ffffff !important;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(249, 115, 22, .25);
    transition: all .2s ease;
    font-size: 14px;
    line-height: 1.2;
    white-space: nowrap;
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(249, 115, 22, .35);
  }

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

  .footer-link {
    color: rgb(148 163 184);
    display: inline-block;
    transition: color .2s ease, padding-left .2s ease;
  }

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

  .page-hero {
    position: relative;
    background-size: cover;
    background-position: center;
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(17, 17, 21, .92) 0%, rgba(27, 27, 31, .72) 45%, rgba(249, 115, 22, .18) 100%);
  }

  .badge-section {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px;
    border-radius: 999px;
    background: #ffffff;
    color: var(--brand-600);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    border: 1px solid #fed7aa;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 999px;
    background: #fff7ed;
    color: var(--brand-600);
    font-size: 12px;
    font-weight: 600;
    border: 1px solid #fed7aa;
  }

  .article-summary {
    background: linear-gradient(135deg, #fff7ed, #ffffff);
    border: 1px solid #fed7aa;
    border-radius: 16px;
    padding: 20px 24px;
    font-size: 15px;
    line-height: 1.75;
    color: #9a3412;
    margin-bottom: 28px;
  }

  .article-summary::before {
    content: '摘要';
    display: block;
    font-weight: 700;
    font-size: 12px;
    color: var(--brand-600);
    text-transform: uppercase;
    letter-spacing: .1em;
    margin-bottom: 8px;
  }

  .article-content {
    font-size: 16px;
    line-height: 1.9;
    color: #374151;
  }

  .article-content p {
    margin-bottom: 1.2em;
  }

  .article-content h2 {
    font-size: 1.45rem;
    font-weight: 700;
    margin: 1.8em 0 .6em;
    padding-bottom: .4em;
    border-bottom: 2px solid var(--line);
    color: var(--ink);
  }

  .article-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 1.4em 0 .5em;
    color: var(--ink);
  }

  .article-content ul,
  .article-content ol {
    margin: 1em 0;
    padding-left: 1.4em;
  }

  .article-content ul li {
    list-style: disc;
    margin-bottom: .4em;
  }

  .article-content ol li {
    list-style: decimal;
    margin-bottom: .4em;
  }

  .article-content a {
    color: var(--brand-600);
    border-bottom: 1px solid rgba(249, 115, 22, .4);
  }

  .article-content a:hover {
    color: var(--brand-700);
    border-color: var(--brand-700);
  }

  .article-content img {
    border-radius: 14px;
    box-shadow: var(--shadow-md);
    margin: 1.5em 0;
  }

  .article-content blockquote {
    border-left: 4px solid var(--brand-500);
    background: var(--soft);
    padding: 1em 1.2em;
    border-radius: 0 12px 12px 0;
    margin: 1.5em 0;
    color: #4b5563;
  }

  .article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    display: block;
    overflow-x: auto;
  }

  .article-content th,
  .article-content td {
    border: 1px solid var(--line);
    padding: 10px 14px;
    text-align: left;
  }

  .article-content th {
    background: var(--soft);
    font-weight: 600;
  }

  .article-content code {
    background: var(--soft);
    padding: 2px 6px;
    border-radius: 6px;
    font-size: .9em;
  }

  .article-content pre {
    background: var(--ink);
    color: #e5e7eb;
    padding: 16px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 1.5em 0;
  }

  .side-card {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
  }

  .side-card-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
  }

  .side-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    color: #4b5563;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    transition: all .2s ease;
  }

  .side-link:hover {
    background: var(--soft);
    color: var(--brand-600);
    transform: translateX(4px);
  }

  .security-card {
    background: var(--ink);
  }

  .info-card {
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    transition: all .3s ease;
    display: block;
  }

  .info-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: #fed7aa;
  }

  .info-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform .4s ease;
  }

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

  .faq-item {
    border: 1px solid var(--line);
    border-radius: 14px;
    margin-bottom: 12px;
    background: #ffffff;
    transition: all .2s ease;
  }

  .faq-item:hover {
    border-color: #fed7aa;
    box-shadow: var(--shadow-sm);
  }

  .faq-item summary {
    cursor: pointer;
    padding: 18px 22px;
    font-weight: 600;
    font-size: 15px;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--ink);
    border-radius: 14px;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 12px;
    color: var(--muted);
    transition: transform .2s ease;
  }

  .faq-item[open] summary::after {
    transform: rotate(180deg);
  }

  .faq-body {
    padding: 0 22px 18px;
    color: #6b7280;
    line-height: 1.75;
    font-size: 14px;
  }

  .cta-block {
    position: relative;
    overflow: hidden;
    background: var(--ink);
    border-radius: 24px;
    padding: 48px 32px;
    text-align: center;
  }

  .cta-block::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -10%;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(249, 115, 22, .35), transparent 60%);
    pointer-events: none;
  }

  .cta-block::after {
    content: '';
    position: absolute;
    bottom: -70%;
    left: -5%;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(249, 115, 22, .22), transparent 60%);
    pointer-events: none;
  }

  @media (max-width: 768px) {
    .cta-block {
      padding: 36px 20px;
    }
  }

  @media (max-width: 520px) {
    .article-content {
      font-size: 15px;
    }
    .article-content h2 {
      font-size: 1.25rem;
    }
    .info-card img {
      height: 180px;
    }
  }

/* roulang page: category2 */
:root {
            --brand: #f97316;
            --brand-dark: #ea580c;
            --ink: #0f172a;
            --muted: #64748b;
            --line: #e2e8f0;
            --bg-soft: #f8fafc;
            --radius: 16px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
            --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: #ffffff;
            color: var(--ink);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        button {
            cursor: pointer;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 600;
            color: var(--muted);
            padding: 0.35rem 0;
            letter-spacing: 0.02em;
        }

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

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

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
            color: #fff;
            font-weight: 700;
            border-radius: 12px;
            padding: 0.75rem 1.5rem;
            font-size: 0.925rem;
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.25);
            transition: all 0.25s ease;
            border: none;
        }

        .btn-primary:hover {
            box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border: 1.5px solid var(--line);
            color: var(--ink);
            font-weight: 600;
            border-radius: 12px;
            padding: 0.75rem 1.5rem;
            font-size: 0.925rem;
            background: #fff;
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.12);
        }

        .card-base {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.65rem;
            border-radius: 999px;
            letter-spacing: 0.03em;
        }

        .num-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            font-size: 0.8rem;
            font-weight: 800;
            color: var(--brand);
            background: rgba(249, 115, 22, 0.1);
        }

        .section-padding {
            padding: 5rem 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 0.75rem;
        }

        .section-subtitle {
            color: var(--muted);
            font-size: 1rem;
            max-width: 620px;
            line-height: 1.7;
        }

        .footer-link {
            color: #94a3b8;
            transition: all 0.2s ease;
        }

        .footer-link:hover {
            color: var(--brand);
            padding-left: 4px;
        }

        .step-line {
            position: relative;
        }

        .step-line::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 48px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(to bottom, rgba(249, 115, 22, 0.3), rgba(249, 115, 22, 0.05));
        }

        .faq-item {
            border: 1px solid var(--line);
            border-radius: 14px;
            background: #fff;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(249, 115, 22, 0.3);
            box-shadow: var(--shadow-md);
        }

        .dark-section {
            background: linear-gradient(145deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 1.75rem 1.5rem;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(249, 115, 22, 0.4);
            transform: translateY(-3px);
        }

        .hero-bg {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.88) 50%, rgba(255, 255, 255, 0.72) 100%);
        }

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

        .banner-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(255, 255, 255, 0.97) 0%, rgba(255, 255, 255, 0.88) 45%, rgba(249, 115, 22, 0.1) 100%);
        }

        .tool-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.65rem 0;
            border-bottom: 1px dashed var(--line);
            font-size: 0.925rem;
        }

        .tool-list li:last-child {
            border-bottom: none;
        }

        .tool-list li i {
            color: var(--brand);
            font-size: 0.85rem;
            margin-top: 0.3rem;
        }

        .bg-grid {
            background-image: radial-gradient(circle at 1px 1px, rgba(15, 23, 42, 0.04) 1px, transparent 0);
            background-size: 28px 28px;
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none !important;
            }

            .nav-mobile {
                display: flex !important;
            }

            .section-padding {
                padding: 3.5rem 0;
            }

            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (min-width: 769px) {
            .nav-mobile {
                display: none !important;
            }
        }

        .nav-mobile {
            display: none;
        }

        .prose-block h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }

        .prose-block h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }

        .prose-block p {
            margin-bottom: 1rem;
            color: #334155;
        }

        .prose-block ul {
            margin-bottom: 1rem;
            padding-left: 1.25rem;
            list-style: disc;
            color: #334155;
        }

/* roulang page: category3 */
/* ==========================
       设计变量与基础 Reset
       ========================== */
    :root {
      --brand: #f97316;
      --brand-deep: #ea580c;
      --ink: #0f172a;
      --soft: #f5f6f8;
      --line: #e2e8f0;
      --muted: #64748b;
      --radius-lg: 20px;
      --radius-md: 14px;
      --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 18px 42px rgba(15, 23, 42, 0.12);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      background: #ffffff;
      color: var(--ink);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    input {
      font-family: inherit;
    }

    /* ==========================
       容器与通用布局
       ========================== */
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ==========================
       导航组件
       ========================== */
    .nav-desktop {
      display: none;
      gap: 32px;
    }

    .nav-link {
      position: relative;
      display: inline-block;
      font-size: 14px;
      font-weight: 600;
      color: var(--ink);
      padding: 6px 2px 8px;
      line-height: 1.4;
      transition: color 0.2s ease;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 2px;
      border-radius: 2px;
      background: var(--brand);
      transition: width 0.25s ease;
    }

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

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

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

    .nav-mobile {
      display: flex;
      align-items: center;
      justify-content: center;
    }

    @media (min-width: 1024px) {
      .nav-desktop {
        display: flex;
      }
      .nav-mobile {
        display: none;
      }
    }

    /* ==========================
       按钮
       ========================== */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, #f97316, #ea580c);
      color: #ffffff;
      font-weight: 700;
      font-size: 14px;
      border-radius: 12px;
      padding: 12px 24px;
      box-shadow: 0 8px 24px rgba(249, 115, 22, 0.32);
      transition: all 0.25s ease;
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 32px rgba(249, 115, 22, 0.4);
      color: #ffffff;
    }

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

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 1.5px solid rgba(255, 255, 255, 0.5);
      color: #ffffff;
      font-weight: 600;
      font-size: 14px;
      border-radius: 12px;
      padding: 12px 24px;
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(6px);
      transition: all 0.25s ease;
    }

    .btn-outline:hover {
      border-color: #ffffff;
      background: rgba(255, 255, 255, 0.16);
      transform: translateY(-2px);
      color: #ffffff;
    }

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

    /* ==========================
       徽章与标签
       ========================== */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.22);
      color: #ffffff;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.04em;
      padding: 6px 14px;
      border-radius: 999px;
      backdrop-filter: blur(8px);
    }

    .badge-light {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #fff4ed;
      border: 1px solid #fed7aa;
      color: var(--brand-deep);
      font-size: 12px;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 999px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      font-size: 12px;
      font-weight: 600;
      color: var(--muted);
      background: var(--soft);
      border: 1px solid var(--line);
      padding: 4px 12px;
      border-radius: 999px;
    }

    /* ==========================
       页面 Hero
       ========================== */
    .page-hero {
      position: relative;
      min-height: 540px;
      padding: 96px 0 88px;
      overflow: hidden;
    }

    .page-hero .hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
    }

    .page-hero .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.78) 45%, rgba(15, 23, 42, 0.45) 100%);
    }

    .hero-title {
      font-size: 40px;
      line-height: 1.2;
      font-weight: 900;
      letter-spacing: -0.02em;
      color: #ffffff;
    }

    .hero-desc {
      max-width: 640px;
      color: rgba(226, 232, 240, 0.9);
      font-size: 16px;
      line-height: 1.8;
    }

    /* ==========================
       卡片组件
       ========================== */
    .help-card {
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .help-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--brand), #fbbf24);
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform 0.35s ease;
    }

    .help-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(249, 115, 22, 0.35);
    }

    .help-card:hover::before {
      transform: scaleX(1);
    }

    .icon-box {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      background: #fff4ed;
      color: var(--brand);
      transition: all 0.3s ease;
    }

    .help-card:hover .icon-box {
      background: linear-gradient(135deg, #f97316, #ea580c);
      color: #ffffff;
      box-shadow: 0 10px 22px rgba(249, 115, 22, 0.32);
    }

    /* ==========================
       深色数据区块
       ========================== */
    .dark-section {
      position: relative;
      background: var(--ink);
      padding: 80px 0;
      overflow: hidden;
    }

    .dark-section::before {
      content: '';
      position: absolute;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(249, 115, 22, 0.15), transparent 65%);
      top: -120px;
      right: -80px;
      pointer-events: none;
    }

    .stat-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 20px;
      padding: 32px 24px;
      text-align: center;
      transition: all 0.3s ease;
    }

    .stat-card:hover {
      background: rgba(255, 255, 255, 0.07);
      border-color: rgba(249, 115, 22, 0.5);
      transform: translateY(-4px);
    }

    .stat-value {
      font-size: 38px;
      font-weight: 900;
      color: #ffffff;
      line-height: 1.1;
    }

    .stat-value span {
      font-size: 18px;
      font-weight: 700;
      color: var(--brand);
    }

    .stat-label {
      margin-top: 8px;
      color: #94a3b8;
      font-size: 13px;
      font-weight: 500;
    }

    .metric-group {
      margin-top: 44px;
      display: grid;
      gap: 20px;
    }

    .metric-item {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: 14px;
      padding: 14px 20px;
    }

    .metric-label {
      color: #cbd5e1;
      font-size: 13px;
      font-weight: 600;
      width: 170px;
      flex-shrink: 0;
    }

    .metric-track {
      flex: 1;
      height: 8px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.1);
      overflow: hidden;
    }

    .metric-fill {
      height: 100%;
      border-radius: 999px;
      background: linear-gradient(90deg, #f97316, #fbbf24);
    }

    .metric-value {
      color: #ffffff;
      font-size: 14px;
      font-weight: 800;
      width: 52px;
      text-align: right;
    }

    /* ==========================
       图文区块
       ========================== */
    .guide-media {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: var(--shadow-hover);
    }

    .guide-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .guide-item {
      display: flex;
      gap: 16px;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 16px;
      padding: 20px 22px;
      box-shadow: var(--shadow-card);
      transition: all 0.25s ease;
    }

    .guide-item:hover {
      border-color: rgba(249, 115, 22, 0.4);
      box-shadow: var(--shadow-hover);
      transform: translateX(4px);
    }

    .guide-item .step-icon {
      width: 40px;
      height: 40px;
      flex-shrink: 0;
      border-radius: 12px;
      background: #fff4ed;
      color: var(--brand);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
    }

    /* ==========================
       安全警示列表
       ========================== */
    .safe-list {
      display: grid;
      gap: 14px;
    }

    .safe-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 16px;
      padding: 20px 22px;
      transition: all 0.25s ease;
    }

    .safe-item:hover {
      border-color: rgba(249, 115, 22, 0.35);
      box-shadow: var(--shadow-card);
      transform: translateY(-3px);
    }

    .safe-item i {
      margin-top: 4px;
      color: var(--brand);
      font-size: 18px;
      flex-shrink: 0;
    }

    .safe-item strong {
      display: block;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 4px;
      color: var(--ink);
    }

    .safe-item p {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.6;
    }

    /* ==========================
       FAQ 手风琴
       ========================== */
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 16px;
      overflow: hidden;
      transition: all 0.25s ease;
    }

    .faq-item:hover {
      border-color: rgba(249, 115, 22, 0.3);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--ink);
      cursor: pointer;
      list-style: none;
      transition: color 0.2s ease;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      font-size: 13px;
      color: var(--muted);
      transition: transform 0.3s ease, color 0.2s ease;
      flex-shrink: 0;
    }

    .faq-item[open] summary {
      color: var(--brand-deep);
    }

    .faq-item[open] summary::after {
      transform: rotate(180deg);
      color: var(--brand);
    }

    .faq-item .faq-answer {
      padding: 0 24px 22px;
      font-size: 14px;
      color: var(--muted);
      line-height: 1.8;
    }

    /* ==========================
       CTA 区块
       ========================== */
    .cta-panel {
      position: relative;
      border-radius: 28px;
      overflow: hidden;
      background: linear-gradient(120deg, #0f172a 0%, #1e293b 100%);
      padding: 56px 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 32px;
    }

    .cta-panel::before {
      content: '';
      position: absolute;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(249, 115, 22, 0.25), transparent 70%);
      top: -100px;
      right: 40px;
      pointer-events: none;
    }

    /* ==========================
       页脚
       ========================== */
    .footer-link {
      color: #94a3b8;
      transition: color 0.2s ease, padding-left 0.2s ease;
    }

    .footer-link:hover {
      color: var(--brand);
      padding-left: 4px;
    }

    /* ==========================
       焦点可见性
       ========================== */
    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: 2px solid var(--brand);
      outline-offset: 3px;
      border-radius: 8px;
    }

    /* ==========================
       响应式断点
       ========================== */
    @media (max-width: 768px) {
      .page-hero {
        min-height: 480px;
        padding: 72px 0 64px;
      }

      .hero-title {
        font-size: 32px;
      }

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

      .dark-section {
        padding: 56px 0;
      }

      .stat-value {
        font-size: 30px;
      }

      .cta-panel {
        padding: 36px 24px;
      }
    }

    @media (max-width: 520px) {
      .hero-title {
        font-size: 28px;
      }

      .btn-primary,
      .btn-outline {
        width: 100%;
      }

      .help-card {
        padding: 26px 20px;
      }

      .metric-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }

      .metric-label {
        width: auto;
      }

      .metric-value {
        text-align: left;
      }
    }