/* roulang page: index */
:root {
    --brand: #0e9f6e;
    --brand-dark: #057a4a;
    --brand-light: #d1fae5;
    --ink: #0f172a;
    --ink-soft: #475569;
    --bg: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
    --shadow-lg: 0 20px 45px rgba(15, 23, 42, .12);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }

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

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

  button,
  input {
    font-family: inherit;
    font-size: inherit;
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible {
    outline: 3px solid rgba(14, 159, 110, .45);
    outline-offset: 2px;
    border-radius: 8px;
  }

  .container-x {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  /* ===== 导航 ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
  }

  .header-top {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: .95rem 0 .7rem;
  }

  .brand-logo {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    flex-shrink: 0;
  }

  .logo-mark {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, #0e9f6e, #065f46);
    color: #fff;
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 6px 16px rgba(14, 159, 110, .3);
    letter-spacing: -0.02em;
  }

  .logo-text {
    font-size: 1.18rem;
    font-weight: 800;
    letter-spacing: -0.015em;
    color: var(--ink);
    white-space: nowrap;
  }

  .header-search {
    flex: 1;
    max-width: 340px;
    margin-left: auto;
    position: relative;
  }

  .header-search .search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: .9rem;
    pointer-events: none;
  }

  .header-search input {
    width: 100%;
    padding: .55rem 1.2rem .55rem 2.6rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #f1f5f9;
    font-size: .9rem;
    color: var(--ink);
    transition: border-color .2s, box-shadow .2s, background .2s;
  }

  .header-search input::placeholder {
    color: #94a3b8;
  }

  .header-search input:focus {
    outline: none;
    border-color: var(--brand);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(14, 159, 110, .12);
  }

  .btn-primary,
  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    border-radius: 999px;
    font-weight: 600;
    transition: all .22s ease;
    cursor: pointer;
    border: 1px solid transparent;
  }

  .btn-primary {
    background: var(--brand);
    color: #fff;
    padding: .6rem 1.35rem;
    font-size: .92rem;
    box-shadow: 0 4px 14px rgba(14, 159, 110, .28);
  }

  .btn-primary:hover {
    background: var(--brand-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(14, 159, 110, .32);
    color: #fff;
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(14, 159, 110, .24);
  }

  .btn-lg {
    padding: .8rem 2rem;
    font-size: 1rem;
  }

  .btn-block {
    width: 100%;
  }

  .btn-outline {
    border-color: #cbd5e1;
    background: transparent;
    color: var(--ink);
    padding: .6rem 1.35rem;
    font-size: .92rem;
  }

  .btn-outline:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: rgba(14, 159, 110, .05);
    transform: translateY(-2px);
  }

  .channel-nav {
    display: flex;
    gap: .4rem;
    overflow-x: auto;
    padding: .3rem 0 .8rem;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
  }

  .channel-nav::-webkit-scrollbar {
    height: 4px;
  }

  .channel-nav::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 99px;
  }

  .nav-item {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .48rem 1.15rem;
    border-radius: 999px;
    font-size: .9rem;
    font-weight: 600;
    color: #475569;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: all .2s ease;
  }

  .nav-item:hover {
    background: #f1f5f9;
    color: var(--ink);
  }

  .nav-item.active {
    background: var(--ink);
    color: #fff;
    box-shadow: 0 4px 14px rgba(15, 23, 42, .18);
  }

  .menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--ink);
    font-size: 1.1rem;
    cursor: pointer;
  }

  .menu-toggle:hover {
    background: #f8fafc;
  }

  /* ===== Hero ===== */
  .hero-section {
    position: relative;
    background-size: cover;
    background-position: center;
    padding: 5.5rem 0 5rem;
    overflow: hidden;
  }

  .hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(15, 23, 42, .92) 20%, rgba(15, 23, 42, .76) 55%, rgba(15, 23, 42, .42));
  }

  .hero-section::after {
    content: '';
    position: absolute;
    right: -160px;
    top: -160px;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14, 159, 110, .22), transparent 70%);
    pointer-events: none;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 3.5rem;
    align-items: center;
  }

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 999px;
    padding: .35rem 1rem;
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .12em;
    color: #a7f3d0;
    text-transform: uppercase;
  }

  .pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #34d399;
    box-shadow: 0 0 0 0 rgba(52, 211, 153, .6);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% {
      box-shadow: 0 0 0 0 rgba(52, 211, 153, .55);
    }
    70% {
      box-shadow: 0 0 0 10px rgba(52, 211, 153, 0);
    }
    100% {
      box-shadow: 0 0 0 0 rgba(52, 211, 153, 0);
    }
  }

  .hero-copy h1 {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    letter-spacing: -0.02em;
    margin-top: 1.2rem;
  }

  .hero-copy h1 span {
    background: linear-gradient(120deg, #34d399, #a7f3d0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    color: #e2e8f0;
    margin-top: 1rem;
  }

  .hero-desc {
    font-size: .96rem;
    line-height: 1.75;
    color: #94a3b8;
    margin-top: .9rem;
    max-width: 540px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
  }

  .hero-actions .btn-outline {
    border-color: rgba(255, 255, 255, .35);
    color: #e2e8f0;
  }

  .hero-actions .btn-outline:hover {
    border-color: #34d399;
    color: #34d399;
    background: rgba(52, 211, 153, .08);
  }

  .hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-top: 2.1rem;
    padding-top: 1.4rem;
    border-top: 1px solid rgba(255, 255, 255, .12);
  }

  .hero-trust span {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .85rem;
    color: #cbd5e1;
  }

  .hero-trust i {
    color: #34d399;
    font-size: .9rem;
  }

  .hero-card {
    background: rgba(255, 255, 255, .96);
    border-radius: 24px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, .25);
    overflow: hidden;
    backdrop-filter: blur(8px);
  }

  .hero-card-head {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .9rem 1.4rem;
    background: #f0fdf4;
    border-bottom: 1px solid #dcfce7;
    font-size: .82rem;
    font-weight: 600;
    color: #047857;
  }

  .status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 4px rgba(34, 197, 94, .15);
  }

  .hero-card-body {
    padding: 1.8rem 1.6rem 1.4rem;
    text-align: center;
  }

  .hero-card-body h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--ink);
  }

  .hero-card-body p {
    font-size: .88rem;
    color: #64748b;
    margin-top: .35rem;
  }

  .hero-card-body .btn-primary {
    margin-top: 1.3rem;
  }

  .hero-card-divider {
    display: flex;
    align-items: center;
    gap: .8rem;
    margin: 1.1rem 0;
    color: #94a3b8;
    font-size: .8rem;
  }

  .hero-card-divider::before,
  .hero-card-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  .hero-card-foot {
    padding: .8rem 1.4rem;
    text-align: center;
    background: #f8fafc;
    border-top: 1px solid var(--border);
    font-size: .78rem;
    color: #64748b;
  }

  .hero-card-foot i {
    color: var(--brand);
    margin-right: .3rem;
  }

  /* ===== 通用板块 ===== */
  .section {
    padding: 5rem 0;
  }

  .section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3rem;
  }

  .section-tag {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: var(--brand-light);
    color: var(--brand-dark);
    border-radius: 999px;
    padding: .3rem 1rem;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .05em;
    text-transform: uppercase;
  }

  .section-header h2 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-top: .9rem;
    line-height: 1.3;
  }

  .section-header p {
    font-size: .95rem;
    color: #64748b;
    margin-top: .7rem;
  }

  .section-header.dark .section-tag {
    background: rgba(52, 211, 153, .15);
    color: #34d399;
  }

  .section-header.dark h2 {
    color: #fff;
  }

  .section-header.dark p {
    color: #94a3b8;
  }

  /* ===== 统计条 ===== */
  .stats-strip {
    background: var(--ink);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    padding: 2rem 0;
    position: relative;
    z-index: 3;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
  }

  .stat-item {
    text-align: center;
    padding: 1rem .5rem;
    border-right: 1px solid rgba(255, 255, 255, .08);
  }

  .stat-item:last-child {
    border-right: none;
  }

  .stat-item strong {
    display: block;
    font-size: 2.1rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
    line-height: 1.2;
  }

  .stat-item strong em {
    font-style: normal;
    color: #34d399;
  }

  .stat-item span {
    display: block;
    font-size: .85rem;
    color: #94a3b8;
    margin-top: .3rem;
  }

  /* ===== 特色 ===== */
  .features-section {
    background: var(--surface);
  }

  .features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }

  .feature-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem 1.6rem;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    position: relative;
    overflow: hidden;
  }

  .feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--brand), #34d399);
    opacity: 0;
    transition: opacity .25s;
  }

  .feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14, 159, 110, .25);
  }

  .feature-card:hover::before {
    opacity: 1;
  }

  .feature-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--brand-dark);
    margin-bottom: 1.2rem;
  }

  .feature-card h3 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--ink);
  }

  .feature-card p {
    font-size: .88rem;
    color: #64748b;
    line-height: 1.7;
    margin-top: .55rem;
  }

  /* ===== 分类入口 ===== */
  .categories-section {
    background: linear-gradient(180deg, #f8fafc, #ecfdf5);
  }

  .categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
  }

  .category-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: block;
    min-height: 340px;
    transition: transform .3s ease, box-shadow .3s ease;
  }

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

  .category-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
  }

  .category-card:hover img {
    transform: scale(1.06);
  }

  .category-overlay {
    position: relative;
    z-index: 2;
    padding: 2rem;
    height: 100%;
    min-height: 340px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, .88) 70%);
  }

  .category-badge {
    align-self: flex-start;
    background: rgba(52, 211, 153, .9);
    color: #052e16;
    font-size: .78rem;
    font-weight: 700;
    padding: .3rem .9rem;
    border-radius: 999px;
    margin-bottom: 1rem;
  }

  .category-overlay h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.01em;
  }

  .category-overlay p {
    font-size: .9rem;
    color: #cbd5e1;
    line-height: 1.65;
    margin-top: .55rem;
    max-width: 90%;
  }

  .category-link {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    color: #34d399;
    font-weight: 600;
    font-size: .9rem;
    margin-top: 1.1rem;
    transition: gap .2s;
  }

  .category-card:hover .category-link {
    gap: .8rem;
  }

  /* ===== 最新资讯 ===== */
  .news-section {
    background: var(--surface);
  }

  .news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.6rem;
  }

  .article-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease;
    display: flex;
    flex-direction: column;
  }

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

  .article-thumb {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 16 / 9;
  }

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

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

  .article-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.4rem 1.4rem 1.2rem;
  }

  .article-meta {
    display: flex;
    align-items: center;
    gap: .7rem;
    margin-bottom: .6rem;
  }

  .article-meta .tag {
    background: var(--brand-light);
    color: var(--brand-dark);
    font-size: .74rem;
    font-weight: 700;
    border-radius: 999px;
    padding: .18rem .7rem;
    white-space: nowrap;
  }

  .article-meta time {
    font-size: .78rem;
    color: #94a3b8;
  }

  .article-body h3 {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.5;
  }

  .article-body h3 a {
    color: var(--ink);
    transition: color .2s;
  }

  .article-body h3 a:hover {
    color: var(--brand);
  }

  .article-body > p {
    font-size: .85rem;
    color: #64748b;
    line-height: 1.65;
    margin-top: .5rem;
    flex: 1;
  }

  .read-more {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    font-size: .84rem;
    font-weight: 600;
    color: var(--brand);
    margin-top: 1rem;
    transition: gap .2s;
  }

  .read-more:hover {
    gap: .7rem;
  }

  .news-empty {
    text-align: center;
    padding: 3rem 1rem;
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    border-radius: var(--radius-lg);
    color: #64748b;
    font-size: .95rem;
  }

  /* ===== 步骤 ===== */
  .steps-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    position: relative;
    overflow: hidden;
  }

  .steps-section::before {
    content: '';
    position: absolute;
    left: -80px;
    bottom: -80px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14, 159, 110, .18), transparent 70%);
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    position: relative;
    z-index: 2;
  }

  .step-card {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius-lg);
    padding: 2rem 1.8rem;
    text-align: center;
    position: relative;
    transition: transform .25s, background .25s, border-color .25s;
  }

  .step-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, .09);
    border-color: rgba(52, 211, 153, .3);
  }

  .step-num {
    position: absolute;
    top: 1rem;
    right: 1.2rem;
    font-size: .82rem;
    font-weight: 800;
    letter-spacing: .1em;
    color: rgba(255, 255, 255, .35);
  }

  .step-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.2rem;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(52, 211, 153, .2), rgba(52, 211, 153, .06));
    border: 1px solid rgba(52, 211, 153, .25);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #34d399;
  }

  .step-card h3 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
  }

  .step-card p {
    color: #94a3b8;
    font-size: .88rem;
    line-height: 1.7;
    margin-top: .6rem;
  }

  /* ===== FAQ ===== */
  .faq-section {
    background: var(--bg);
  }

  .faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: .9rem;
  }

  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow .25s, border-color .25s;
  }

  .faq-item.open {
    border-color: rgba(14, 159, 110, .35);
    box-shadow: var(--shadow-md);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.15rem 1.4rem;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: .98rem;
    font-weight: 600;
    color: var(--ink);
    transition: color .2s;
  }

  .faq-question:hover {
    color: var(--brand);
  }

  .faq-question i {
    color: #94a3b8;
    font-size: .85rem;
    transition: transform .3s;
    flex-shrink: 0;
  }

  .faq-item.open .faq-question i {
    transform: rotate(180deg);
    color: var(--brand);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
    padding: 0 1.4rem;
  }

  .faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 1.4rem 1.2rem;
  }

  .faq-answer p {
    font-size: .9rem;
    color: #475569;
    line-height: 1.75;
    border-top: 1px solid #f1f5f9;
    padding-top: .8rem;
  }

  /* ===== CTA ===== */
  .cta-section {
    padding: 4rem 0;
    background: var(--ink);
    position: relative;
  }

  .cta-panel {
    position: relative;
    border-radius: 28px;
    padding: 3.5rem 2.5rem;
    overflow: hidden;
    background: linear-gradient(120deg, rgba(14, 159, 110, .3), rgba(15, 23, 42, .9)), url('/assets/images/backpic/back-3.png') center/cover;
    text-align: center;
    box-shadow: var(--shadow-lg);
  }

  .cta-panel h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
  }

  .cta-panel p {
    color: #cbd5e1;
    font-size: .96rem;
    margin-top: .7rem;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
  }

  .cta-actions .btn-primary {
    background: #34d399;
    color: #052e16;
    box-shadow: 0 4px 14px rgba(52, 211, 153, .3);
  }

  .cta-actions .btn-primary:hover {
    background: #6ee7b7;
    box-shadow: 0 8px 22px rgba(52, 211, 153, .4);
  }

  .cta-actions .btn-outline {
    border-color: rgba(255, 255, 255, .4);
    color: #fff;
  }

  .cta-actions .btn-outline:hover {
    border-color: #34d399;
    color: #34d399;
    background: rgba(52, 211, 153, .08);
  }

  /* ===== 页脚 ===== */
  .site-footer {
    background: #0b1120;
    color: #94a3b8;
    padding: 4rem 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
  }

  .footer-brand .brand-logo {
    margin-bottom: 1rem;
  }

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

  .footer-brand p {
    font-size: .88rem;
    line-height: 1.75;
    max-width: 320px;
  }

  .footer-links h4,
  .footer-contact h4 {
    color: #fff;
    font-size: .98rem;
    font-weight: 700;
    margin-bottom: 1.1rem;
  }

  .footer-links a {
    display: block;
    font-size: .88rem;
    padding: .3rem 0;
    color: #94a3b8;
    transition: color .2s, padding-left .2s;
  }

  .footer-links a:hover {
    color: #34d399;
    padding-left: .3rem;
  }

  .footer-contact p {
    font-size: .88rem;
    padding: .3rem 0;
    display: flex;
    align-items: center;
    gap: .5rem;
  }

  .footer-contact p i {
    color: #34d399;
    width: 16px;
    text-align: center;
  }

  .footer-bottom {
    padding: 1.5rem 0;
    display: flex;
    justify-content: center;
    text-align: center;
    font-size: .8rem;
    color: #64748b;
    flex-direction: column;
    gap: .4rem;
  }

  .footer-bottom a {
    color: #94a3b8;
  }

  .footer-bottom a:hover {
    color: #34d399;
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .hero-content {
      grid-template-columns: 1fr;
      gap: 2.5rem;
    }
    .hero-card {
      max-width: 520px;
      margin: 0 auto;
    }
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .categories-grid {
      grid-template-columns: 1fr;
    }
    .category-card,
    .category-overlay {
      min-height: 300px;
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 768px) {
    .section {
      padding: 3.5rem 0;
    }
    .header-search,
    .header-cta {
      display: none;
    }
    .menu-toggle {
      display: inline-flex;
      margin-left: auto;
    }
    .channel-nav {
      display: none;
      flex-direction: column;
      gap: .5rem;
      padding: 1rem 0 1.2rem;
      border-top: 1px solid var(--border);
    }
    .channel-nav.open {
      display: flex;
    }
    .nav-item {
      border-radius: 12px;
      font-size: .95rem;
      padding: .7rem 1.2rem;
      border: 1px solid var(--border);
    }
    .nav-item.active {
      background: var(--brand);
      color: #fff;
    }
    .hero-section {
      padding: 3.5rem 0;
    }
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 1rem;
    }
    .stat-item {
      border-right: none;
      padding: .6rem;
    }
    .stat-item strong {
      font-size: 1.6rem;
    }
    .features-grid,
    .news-grid {
      grid-template-columns: 1fr;
      gap: 1.2rem;
    }
    .steps-grid {
      grid-template-columns: 1fr;
      gap: 1.2rem;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    .cta-panel {
      padding: 2.5rem 1.4rem;
    }
    .cta-actions .btn-lg {
      width: 100%;
    }
  }

  @media (max-width: 520px) {
    .header-top {
      gap: .6rem;
    }
    .logo-text {
      font-size: 1rem;
    }
    .logo-mark {
      width: 38px;
      height: 38px;
      font-size: 17px;
    }
    .hero-copy h1 {
      font-size: 1.9rem;
    }
    .hero-actions .btn-lg {
      width: 100%;
    }
    .hero-trust {
      flex-direction: column;
      gap: .6rem;
    }
    .section-header h2 {
      font-size: 1.5rem;
    }
    .footer-bottom {
      font-size: .74rem;
    }
  }

/* roulang page: article */
:root {
            --color-primary: #0B1F3A;
            --color-primary-light: #16305A;
            --color-accent: #D4A94E;
            --color-accent-light: #E8C87A;
            --color-bg: #F6F7FB;
            --color-surface: #FFFFFF;
            --color-text: #1B2430;
            --color-text-weak: #5E6D82;
            --color-border: #E2E7F0;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(11,31,58,.08);
            --shadow-md: 0 8px 24px rgba(11,31,58,.10);
            --shadow-lg: 0 20px 40px rgba(11,31,58,.12);
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-x {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ---------- 通用按钮 ---------- */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            transition: all .25s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 2px 6px rgba(11,31,58,.12);
        }

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

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

        .btn-primary:focus-visible,
        .btn-outline-light:focus-visible {
            outline: 3px solid rgba(212,169,78,.55);
            outline-offset: 2px;
        }

        .btn-accent {
            background: var(--color-accent);
            color: #1B2430;
        }

        .btn-accent:hover {
            background: var(--color-accent-light);
            color: #1B2430;
        }

        .btn-outline-light {
            border: 1px solid rgba(255,255,255,.4);
            background: transparent;
            color: #fff;
            box-shadow: none;
        }

        .btn-outline-light:hover {
            background: rgba(255,255,255,.1);
            border-color: #fff;
            transform: translateY(-2px);
            box-shadow: none;
        }

        /* ---------- Header ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,.96);
            backdrop-filter: blur(10px);
            box-shadow: 0 1px 0 rgba(11,31,58,.06), 0 8px 20px rgba(11,31,58,.04);
        }

        .header-top {
            display: flex;
            align-items: center;
            gap: 20px;
            padding-top: 14px;
            padding-bottom: 14px;
        }

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

        .logo-mark {
            width: 40px;
            height: 40px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 20px;
            box-shadow: 0 4px 12px rgba(11,31,58,.25);
        }

        .logo-text {
            font-weight: 800;
            font-size: 19px;
            letter-spacing: .5px;
            color: var(--color-primary);
            white-space: nowrap;
        }

        .header-search {
            flex: 1;
            max-width: 420px;
            display: flex;
            background: #f2f4f9;
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 4px 4px 4px 16px;
            transition: border-color .25s ease, background .25s ease, box-shadow .25s ease;
        }

        .header-search:focus-within {
            background: #fff;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(11,31,58,.08);
        }

        .header-search input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            color: var(--color-text);
            font-size: 14px;
            min-width: 0;
        }

        .header-search button {
            width: 36px;
            height: 36px;
            border: none;
            background: var(--color-primary);
            color: #fff;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .25s ease, transform .25s ease;
        }

        .header-search button:hover {
            background: var(--color-primary-light);
            transform: scale(1.04);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(212,169,78,.14);
            color: #8a6c24;
            font-weight: 700;
            font-size: 14px;
            padding: 9px 16px;
            border-radius: 999px;
            white-space: nowrap;
            transition: background .25s ease, color .25s ease, transform .25s ease;
        }

        .header-cta:hover {
            background: var(--color-accent);
            color: #fff;
            transform: translateY(-1px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--color-primary);
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
        }

        .menu-toggle:hover {
            background: #f2f4f9;
        }

        .channel-nav {
            border-top: 1px solid var(--color-border);
            background: #fff;
        }

        .nav-scroll {
            display: flex;
            gap: 6px;
            overflow-x: auto;
            padding-top: 6px;
            padding-bottom: 6px;
            scrollbar-width: none;
        }

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

        .nav-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 18px;
            font-weight: 600;
            color: var(--color-text-weak);
            font-size: 14px;
            border-radius: 999px;
            white-space: nowrap;
            transition: all .25s ease;
        }

        .nav-item i {
            font-size: 15px;
        }

        .nav-item:hover {
            background: #f2f4f9;
            color: var(--color-primary);
        }

        .nav-item.active {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(11,31,58,.18);
        }

        /* ---------- 文章 Hero ---------- */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 90px 0 80px;
            color: #fff;
            text-align: center;
        }

        .hero-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(4,19,39,.92), rgba(11,31,58,.78) 55%, rgba(212,169,78,.35));
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 860px;
        }

        .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,.72);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            transition: color .2s;
        }

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

        .crumb-divider {
            opacity: .5;
        }

        .hero-content h1 {
            font-size: clamp(28px, 4vw, 46px);
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0,0,0,.3);
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            max-width: 680px;
            margin: 0 auto 24px;
            color: rgba(255,255,255,.88);
        }

        .hero-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,.16);
            border: 1px solid rgba(255,255,255,.2);
            padding: 7px 14px;
            border-radius: 999px;
            font-size: 13px;
            backdrop-filter: blur(6px);
        }

        /* ---------- 正文布局 ---------- */
        .page-layout {
            padding-top: 40px;
            padding-bottom: 20px;
        }

        .article-box {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 48px;
            max-width: 900px;
            margin: 0 auto;
        }

        .post-content {
            font-size: 16px;
            line-height: 1.9;
            color: #2a3340;
        }

        .post-content h2 {
            font-size: 24px;
            margin: 34px 0 14px;
            padding-left: 14px;
            border-left: 4px solid var(--color-accent);
            color: var(--color-primary);
        }

        .post-content h3 {
            font-size: 20px;
            margin: 26px 0 10px;
            color: var(--color-primary);
        }

        .post-content p {
            margin: 0 0 18px;
        }

        .post-content ul,
        .post-content ol {
            margin: 0 0 20px;
            padding-left: 22px;
        }

        .post-content li {
            margin-bottom: 8px;
        }

        .post-content blockquote {
            border-left: 4px solid var(--color-accent);
            background: #faf8f2;
            padding: 16px 22px;
            margin: 22px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: #4b5560;
        }

        .post-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-md);
        }

        .post-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-decoration-color: rgba(11,31,58,.3);
            text-underline-offset: 4px;
        }

        .post-content a:hover {
            color: var(--color-accent);
            text-decoration-color: var(--color-accent);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 34px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #f1f3f8;
            color: var(--color-text-weak);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }

        .tag i {
            color: var(--color-accent);
        }

        /* ---------- 内容未找到 ---------- */
        .not-found-card {
            text-align: center;
            padding: 60px 20px;
        }

        .nf-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: #fff1f0;
            color: #e04b3a;
            font-size: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }

        .not-found-card h2 {
            font-size: 26px;
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        .not-found-card p {
            color: var(--color-text-weak);
            margin-bottom: 24px;
        }

        /* ---------- 通用板块 ---------- */
        .section-block {
            padding: 70px 0;
        }

        .section-block + .section-block {
            padding-top: 0;
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 44px;
        }

        .section-overline {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-head h2 {
            font-size: 30px;
            color: var(--color-primary);
            margin-bottom: 10px;
            line-height: 1.3;
        }

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

        /* ---------- 服务卡片 ---------- */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .service-card {
            display: block;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(212,169,78,.5);
        }

        .service-card:focus-visible {
            outline: 3px solid rgba(212,169,78,.5);
            outline-offset: 2px;
        }

        .service-img {
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #eef1f5;
        }

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

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

        .service-body {
            padding: 24px;
        }

        .service-body h3 {
            font-size: 20px;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .service-body p {
            color: var(--color-text-weak);
            font-size: 14px;
            margin-bottom: 16px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--color-primary);
            transition: gap .25s ease, color .25s ease;
        }

        .card-link i {
            font-size: 13px;
        }

        .service-card:hover .card-link {
            gap: 12px;
            color: #8a6c24;
        }

        /* ---------- CTA ---------- */
        .cta-block {
            background: var(--color-primary);
            color: #fff;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 460px;
            height: 460px;
            border-radius: 50%;
            background: rgba(212,169,78,.14);
        }

        .cta-block::after {
            content: '';
            position: absolute;
            bottom: -70%;
            left: -5%;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(255,255,255,.05);
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-text {
            flex: 1 1 480px;
        }

        .cta-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(212,169,78,.18);
            color: var(--color-accent-light);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .cta-text h2 {
            font-size: 30px;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-text p {
            color: rgba(255,255,255,.78);
            max-width: 560px;
        }

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

        /* ---------- FAQ ---------- */
        .faq-block {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .faq-container {
            max-width: 860px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .faq-item:hover {
            border-color: rgba(212,169,78,.6);
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 700;
            color: var(--color-primary);
            font-size: 15px;
        }

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

        .faq-item summary i {
            color: var(--color-accent);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            padding: 0 22px 18px;
            color: var(--color-text-weak);
            font-size: 14px;
        }

        .faq-answer p {
            margin: 0;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #0a1524;
            color: rgba(255,255,255,.72);
            padding: 60px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,.08);
        }

        .footer-brand p {
            margin-top: 16px;
            line-height: 1.8;
            color: rgba(255,255,255,.6);
            max-width: 360px;
        }

        .site-footer .logo-text {
            color: #fff;
        }

        .site-footer .logo-mark {
            background: var(--color-accent);
            color: var(--color-primary);
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            padding: 4px 0;
            color: rgba(255,255,255,.66);
            transition: color .2s ease, transform .2s ease;
        }

        .footer-links a:hover {
            color: var(--color-accent-light);
            transform: translateX(4px);
        }

        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            color: rgba(255,255,255,.66);
        }

        .footer-contact i {
            color: var(--color-accent);
            width: 16px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            padding: 22px 0 24px;
            color: rgba(255,255,255,.45);
            font-size: 13px;
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
                gap: 12px;
            }

            .header-search {
                order: 3;
                max-width: 100%;
                flex-basis: 100%;
            }

            .header-cta {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .channel-nav {
                display: none;
            }

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

            .nav-scroll {
                display: flex;
            }

            .section-block {
                padding: 50px 0;
            }

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

            .article-box {
                padding: 28px 20px;
            }

            .page-hero {
                padding: 60px 0 50px;
            }

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

        @media (max-width: 520px) {
            .container-x {
                padding-left: 16px;
                padding-right: 16px;
            }

            .logo-text {
                font-size: 16px;
            }

            .hero-meta {
                flex-direction: column;
                align-items: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .cta-actions .btn-primary {
                width: 100%;
            }

            .article-box {
                border-radius: var(--radius-md);
                padding: 22px 16px;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #183a6b;
    --primary-rgb: 24, 58, 107;
    --primary-dark: #0f2a4f;
    --primary-light: #e8f0fa;
    --accent: #d4a254;
    --accent-light: #f5e9d6;
    --bg: #f7f8fa;
    --surface: #ffffff;
    --text-main: #17233b;
    --text-muted: #58708e;
    --border: #e3e9f0;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(24, 58, 107, 0.06);
    --shadow-md: 0 8px 30px rgba(24, 58, 107, 0.10);
    --shadow-lg: 0 24px 60px rgba(24, 58, 107, 0.16);
    --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

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

  a { text-decoration: none; color: inherit; transition: all .25s ease; }

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

  input, textarea { font-family: inherit; }

  .container-x {
    width: min(1200px, 92%);
    margin-inline: auto;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--accent-light);
    color: #9a6a2f;
    font-size: 14px;
    font-weight: 600;
    border-radius: 999px;
    letter-spacing: .5px;
  }

  .section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 44px;
  }

  .section-head h2 {
    font-size: clamp(28px, 4vw, 38px);
    font-weight: 800;
    line-height: 1.35;
    color: var(--primary-dark);
    margin: 14px 0 12px;
  }

  .section-head p {
    color: var(--text-muted);
    font-size: 16px;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 15px;
    padding: 12px 26px;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: all .25s ease;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 18px rgba(24, 58, 107, .18);
  }

  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(24, 58, 107, .24);
  }

  .btn-accent {
    background: var(--accent);
    color: #1f2937;
    box-shadow: 0 6px 18px rgba(212, 162, 84, .28);
  }

  .btn-accent:hover {
    background: #c6974a;
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(212, 162, 84, .34);
  }

  .btn-outline-light {
    border: 1px solid rgba(255, 255, 255, .7);
    color: #fff;
    background: rgba(255, 255, 255, .08);
    backdrop-filter: blur(6px);
  }

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

  /* ===== Header ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(16px);
    box-shadow: 0 2px 20px rgba(24, 58, 107, .06);
  }

  .nav-top {
    background: #fff;
    border-bottom: 1px solid var(--border);
  }

  .nav-top-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    gap: 18px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

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

  .logo-mark {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-weight: 800;
    font-size: 22px;
    border-radius: 12px;
    box-shadow: 0 6px 16px rgba(24, 58, 107, .28);
  }

  .logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: .5px;
    white-space: nowrap;
  }

  .nav-top-right {
    display: flex;
    align-items: center;
    gap: 14px;
  }

  .nav-search {
    position: relative;
    display: flex;
    align-items: center;
  }

  .nav-search i {
    position: absolute;
    left: 15px;
    color: var(--text-muted);
    font-size: 14px;
    pointer-events: none;
  }

  .nav-search input {
    width: 220px;
    padding: 10px 18px 10px 40px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg);
    font-size: 14px;
    color: var(--text-main);
    transition: all .25s ease;
  }

  .nav-search input:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(24, 58, 107, .10);
    width: 250px;
  }

  .nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 13px;
    font-size: 17px;
    color: var(--primary);
    transition: all .2s;
  }

  .nav-toggle:hover {
    background: var(--primary-light);
  }

  .channel-wrapper {
    background: #fff;
    border-bottom: 1px solid var(--border);
  }

  .channel-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 12px;
    padding-bottom: 12px;
    overflow-x: auto;
    scrollbar-width: none;
  }

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

  .nav-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-main);
    background: var(--bg);
    border: 1px solid transparent;
    white-space: nowrap;
    transition: all .25s ease;
  }

  .nav-item:hover {
    background: var(--primary-light);
    color: var(--primary);
    transform: translateY(-1px);
  }

  .nav-item:focus-visible,
  .btn:focus-visible,
  .nav-toggle:focus-visible {
    outline: 3px solid rgba(212, 162, 84, .5);
    outline-offset: 2px;
  }

  .nav-item.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 16px rgba(24, 58, 107, .22);
  }

  /* ===== Page Hero ===== */
  .page-hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 96px 0 110px;
    overflow: hidden;
  }

  .page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(15, 42, 79, .96) 10%, rgba(24, 58, 107, .88) 50%, rgba(24, 58, 107, .72));
    pointer-events: none;
  }

  .page-hero-inner {
    position: relative;
    z-index: 2;
    max-width: 760px;
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    backdrop-filter: blur(8px);
    margin-bottom: 22px;
  }

  .page-hero h1 {
    font-size: clamp(34px, 5vw, 52px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: .5px;
    margin-bottom: 18px;
  }

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

  .page-hero p {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255, 255, 255, .88);
    max-width: 620px;
    margin-bottom: 30px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 36px;
  }

  .hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero-stat-item {
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 14px;
    padding: 12px 18px;
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .hero-stat-item i {
    color: var(--accent);
    font-size: 18px;
  }

  .hero-stat-item strong {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
  }

  .hero-stat-item span {
    font-size: 13px;
    color: rgba(255, 255, 255, .78);
  }

  /* ===== Feature Intro Cards ===== */
  .feature-strip {
    padding: 72px 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
  }

  .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .feature-card {
    padding: 30px 28px;
    border-radius: var(--radius-lg);
    background: var(--bg);
    border: 1px solid var(--border);
    transition: all .3s ease;
    position: relative;
    overflow: hidden;
  }

  .feature-card:hover {
    background: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }

  .feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 21px;
    border-radius: 14px;
    margin-bottom: 16px;
  }

  .feature-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--primary-dark);
  }

  .feature-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.75;
  }

  /* ===== Steps Section ===== */
  .section-steps {
    padding: 88px 0;
    background: var(--bg);
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    counter-reset: step;
  }

  .step-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    position: relative;
    transition: all .3s ease;
  }

  .step-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: transparent;
  }

  .step-num {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    border-radius: 50%;
    margin-bottom: 18px;
    box-shadow: 0 6px 14px rgba(24, 58, 107, .24);
  }

  .step-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-dark);
  }

  .step-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.75;
  }

  .step-card .step-tip {
    margin-top: 12px;
    font-size: 13px;
    color: #9a6a2f;
    background: var(--accent-light);
    border-radius: 8px;
    padding: 8px 12px;
  }

  /* ===== Dark Troubleshoot Section ===== */
  .section-trouble {
    padding: 88px 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    position: relative;
    color: #fff;
  }

  .section-trouble::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, rgba(10, 30, 58, .97), rgba(15, 42, 79, .94));
    pointer-events: none;
  }

  .section-trouble .container-x {
    position: relative;
    z-index: 2;
  }

  .trouble-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 44px;
    align-items: center;
  }

  .trouble-copy h2 {
    font-size: clamp(26px, 3vw, 34px);
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 14px;
  }

  .trouble-copy p {
    color: rgba(255, 255, 255, .76);
    margin-bottom: 18px;
  }

  .trouble-copy .btn {
    margin-top: 8px;
  }

  .trouble-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .trouble-item {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: var(--radius);
    padding: 18px 20px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    backdrop-filter: blur(6px);
    transition: all .3s ease;
  }

  .trouble-item:hover {
    background: rgba(255, 255, 255, .14);
    transform: translateX(4px);
  }

  .trouble-item i {
    color: var(--accent);
    font-size: 18px;
    margin-top: 4px;
  }

  .trouble-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
  }

  .trouble-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, .72);
  }

  /* ===== Article List Section ===== */
  .section-articles {
    padding: 88px 0;
    background: var(--surface);
  }

  .article-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 28px;
  }

  .article-card-h {
    display: flex;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all .3s ease;
  }

  .article-card-h:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: transparent;
  }

  .article-card-h .card-img {
    width: 44%;
    min-height: 220px;
    object-fit: cover;
    overflow: hidden;
  }

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

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

  .article-card-h .card-body {
    padding: 26px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    width: fit-content;
    margin-bottom: 12px;
  }

  .article-card-h h3,
  .article-card-v h3 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 10px;
    color: var(--text-main);
  }

  .article-card-h p,
  .article-card-v p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
  }

  .card-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 14px;
  }

  .card-meta span {
    font-size: 12px;
    color: #9aa8b8;
    display: inline-flex;
    align-items: center;
    gap: 5px;
  }

  .article-vertical-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .article-card-v {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all .3s ease;
    display: flex;
    flex-direction: column;
  }

  .article-card-v:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: transparent;
  }

  .article-card-v .card-img {
    height: 180px;
    overflow: hidden;
  }

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

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

  .article-card-v .card-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .article-card-v .btn-link {
    margin-top: auto;
    padding-top: 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .article-card-v .btn-link i {
    transition: transform .25s;
  }

  .article-card-v .btn-link:hover i {
    transform: translateX(4px);
  }

  /* ===== Stats Section ===== */
  .section-stats {
    padding: 70px 0;
    background: var(--primary-dark);
    color: #fff;
    border-radius: 28px;
    margin: 0 4%;
    transform: translateY(40px);
    box-shadow: var(--shadow-lg);
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
  }

  .stat-item h3 {
    font-size: 40px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
  }

  .stat-item p {
    color: rgba(255, 255, 255, .72);
    font-size: 14px;
    margin-top: 6px;
  }

  /* ===== FAQ Section ===== */
  .section-faq {
    padding: 130px 0 88px;
    background: var(--bg);
  }

  .faq-wrap {
    max-width: 780px;
    margin: 0 auto;
  }

  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .3s ease;
  }

  .faq-item + .faq-item {
    margin-top: 14px;
  }

  .faq-item:hover {
    border-color: #d3dce6;
  }

  .faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    background: none;
    border: none;
    text-align: left;
    color: var(--text-main);
    gap: 16px;
  }

  .faq-question i {
    color: var(--primary);
    font-size: 14px;
    transition: transform .3s;
    flex-shrink: 0;
  }

  .faq-item.open {
    border-color: var(--primary);
    box-shadow: 0 4px 18px rgba(24, 58, 107, .08);
  }

  .faq-item.open .faq-question i {
    transform: rotate(180deg);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    padding: 0 24px;
    transition: all .35s ease;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
  }

  .faq-item.open .faq-answer {
    max-height: 300px;
    opacity: 1;
    padding: 0 24px 22px;
  }

  /* ===== CTA ===== */
  .cta-section {
    padding: 70px 0 90px;
    background: var(--bg);
  }

  .cta-box {
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    border-radius: 28px;
    padding: 70px 40px;
    text-align: center;
    position: relative;
    color: #fff;
    overflow: hidden;
  }

  .cta-box::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(15, 42, 79, .95), rgba(24, 58, 107, .88));
  }

  .cta-inner {
    position: relative;
    z-index: 2;
  }

  .cta-inner h2 {
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 800;
    margin-bottom: 12px;
  }

  .cta-inner p {
    max-width: 560px;
    margin: 0 auto 28px;
    color: rgba(255, 255, 255, .82);
    font-size: 16px;
  }

  .cta-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #0d1730;
    color: rgba(255, 255, 255, .7);
    padding: 70px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr .8fr .8fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
  }

  .footer-brand .brand-logo {
    margin-bottom: 16px;
  }

  .footer-brand .logo-text {
    color: #fff;
    font-size: 20px;
  }

  .footer-brand .logo-mark {
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    max-width: 300px;
  }

  .footer-links h4,
  .footer-contact h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
  }

  .footer-links a {
    display: block;
    color: rgba(255, 255, 255, .6);
    font-size: 14px;
    padding: 5px 0;
    transition: all .25s;
  }

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

  .footer-contact p {
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, .6);
  }

  .footer-contact i {
    color: var(--accent);
    width: 18px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .12);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
  }

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

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

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

    .trouble-layout {
      grid-template-columns: 1fr;
      gap: 28px;
    }

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

  @media (max-width: 768px) {
    .nav-toggle {
      display: inline-flex;
    }

    .nav-top-right {
      position: absolute;
      top: 84px;
      left: 0;
      right: 0;
      padding: 18px 4%;
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      flex-direction: column;
      align-items: stretch;
      gap: 12px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-8px);
      transition: all .3s ease;
    }

    .nav-top-right.open {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .nav-search,
    .nav-cta {
      display: flex;
      width: 100%;
    }

    .nav-search input {
      width: 100%;
      flex: 1;
    }

    .nav-search input:focus {
      width: 100%;
    }

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

    .page-hero {
      padding: 64px 0 74px;
    }

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

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

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

    .article-feature-grid {
      grid-template-columns: 1fr;
    }

    .article-card-h {
      flex-direction: column;
    }

    .article-card-h .card-img {
      width: 100%;
      min-height: 180px;
      height: 200px;
    }

    .section-stats {
      margin: 0 2%;
      padding: 50px 20px;
    }
  }

  @media (max-width: 520px) {
    .channel-nav .nav-item {
      padding: 8px 16px;
      font-size: 14px;
    }

    .logo-text {
      font-size: 16px;
    }

    .logo-mark {
      width: 36px;
      height: 36px;
      font-size: 18px;
    }

    .feature-grid,
    .article-vertical-grid,
    .steps-grid,
    .stats-grid {
      grid-template-columns: 1fr;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }

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

    .cta-box {
      padding: 48px 22px;
      border-radius: 20px;
    }

    .cta-actions {
      flex-direction: column;
    }

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

    .section-head {
      text-align: left;
    }

    .section-head h2 {
      font-size: 26px;
    }

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

    .stat-item h3 {
      font-size: 30px;
    }
  }

/* roulang page: category2 */
:root {
      --primary: #1e3a5f;
      --secondary: #e8b54a;
      --accent: #2f66a3;
      --dark: #0f1e2e;
      --light: #f5f7fb;
      --radius: 16px;
      --shadow-sm: 0 2px 8px rgba(15, 30, 46, 0.08);
      --shadow-md: 0 8px 24px rgba(15, 30, 46, 0.12);
      --shadow-lg: 0 16px 48px rgba(15, 30, 46, 0.18);
    }
    * { 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', sans-serif;
      background: #fff;
      color: #222;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
    img { max-width: 100%; display: block; }
    .container-x { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    .section-pad { padding: 88px 0; }
    .section-title { font-size: 2.2rem; font-weight: 800; line-height: 1.25; color: var(--dark); letter-spacing: -0.5px; }
    .section-sub { font-size: 1.1rem; color: #5a6b7b; margin-top: 8px; }

    /* 顶部bar */
    .top-bar { background: var(--dark); color: #b8c7d8; font-size: 13px; padding: 6px 0; }
    .top-bar .container-x { display: flex; justify-content: space-between; align-items: center; }

    /* 主导航 */
    .main-header { background: #fff; box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 100; }
    .header-row { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; max-width: 1200px; margin: 0 auto; }
    .brand-logo { display: flex; align-items: center; gap: 10px; }
    .logo-mark {
      width: 42px; height: 42px; background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      border-radius: 12px; display: flex; align-items: center; justify-content: center;
      color: #fff; font-size: 20px; font-weight: 800; font-style: italic;
      box-shadow: 0 4px 12px rgba(30, 58, 95, 0.35);
    }
    .logo-text { font-size: 1.35rem; font-weight: 800; color: var(--dark); letter-spacing: -0.5px; }
    .header-actions { display: flex; align-items: center; gap: 14px; }
    .search-box { position: relative; }
    .search-box input {
      width: 200px; padding: 9px 16px 9px 38px; border: 1px solid #e2e8f0; border-radius: 999px;
      font-size: 14px; background: #f8fafc; outline: none; transition: all 0.3s;
    }
    .search-box input:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px rgba(47, 102, 163, 0.12); }
    .search-box i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: #94a3b8; font-size: 13px; }
    .header-cta {
      background: linear-gradient(135deg, var(--secondary), #d4a43a); color: #fff; font-weight: 700;
      padding: 9px 22px; border-radius: 999px; font-size: 14px; border: none; cursor: pointer;
      box-shadow: 0 4px 12px rgba(232, 181, 74, 0.35); transition: all 0.3s;
    }
    .header-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232, 181, 74, 0.5); }

    /* 频道Tabs导航 */
    .channel-nav-wrap { background: #fff; border-top: 1px solid #eef2f7; }
    .channel-nav {
      display: flex; gap: 8px; padding: 0 24px; max-width: 1200px; margin: 0 auto;
      overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none;
    }
    .channel-nav::-webkit-scrollbar { display: none; }
    .nav-item {
      display: inline-flex; align-items: center; gap: 8px; padding: 14px 22px 12px;
      font-size: 15px; font-weight: 600; color: #5a6b7b; white-space: nowrap;
      border-bottom: 3px solid transparent; transition: all 0.25s;
    }
    .nav-item i { font-size: 14px; opacity: 0.8; }
    .nav-item:hover { color: var(--primary); }
    .nav-item.active { color: var(--primary); border-bottom-color: var(--secondary); font-weight: 700; }

    /* 面包屑 */
    .breadcrumb { background: #f8fafc; padding: 12px 0; font-size: 14px; color: #5a6b7b; border-bottom: 1px solid #eef2f7; }
    .breadcrumb a { color: var(--accent); }
    .breadcrumb a:hover { color: var(--primary); }

    /* Hero */
    .security-hero {
      background: linear-gradient(135deg, #0b1622 0%, var(--primary) 55%, var(--accent) 100%), url('/assets/images/backpic/back-3.png');
      background-size: cover; background-position: center; background-blend-mode: overlay;
      padding: 100px 0; position: relative; overflow: hidden;
      min-height: 420px; display: flex; align-items: center;
    }
    .security-hero::before {
      content: ''; position: absolute; top: -120px; right: -80px; width: 400px; height: 400px;
      background: radial-gradient(circle, rgba(232, 181, 74, 0.15) 0%, transparent 70%);
    }
    .security-hero::after {
      content: ''; position: absolute; bottom: -150px; left: -100px; width: 400px; height: 400px;
      background: radial-gradient(circle, rgba(47, 102, 163, 0.25) 0%, transparent 70%);
    }
    .hero-content { position: relative; z-index: 2; color: #fff; max-width: 720px; }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12);
      border: 1px solid rgba(255,255,255,0.2); padding: 6px 16px; border-radius: 999px;
      font-size: 13px; font-weight: 600; letter-spacing: 0.3px; margin-bottom: 20px;
      backdrop-filter: blur(8px);
    }
    .hero-badge i { color: var(--secondary); }
    .hero-title { font-size: 3rem; font-weight: 800; line-height: 1.15; margin-bottom: 16px; letter-spacing: -1px; }
    .hero-desc { font-size: 1.15rem; opacity: 0.9; margin-bottom: 32px; line-height: 1.8; }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn-primary {
      display: inline-flex; align-items: center; gap: 8px; background: var(--secondary); color: #fff;
      padding: 14px 32px; border-radius: 999px; font-weight: 700; font-size: 15px; border: none;
      box-shadow: 0 8px 24px rgba(232, 181, 74, 0.4); transition: all 0.3s; cursor: pointer;
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(232, 181, 74, 0.5); }
    .btn-ghost {
      display: inline-flex; align-items: center; gap: 8px; background: transparent; color: #fff;
      padding: 14px 32px; border-radius: 999px; font-weight: 600; font-size: 15px;
      border: 1.5px solid rgba(255,255,255,0.35); transition: all 0.3s; cursor: pointer;
    }
    .btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
    .hero-stats { display: flex; gap: 40px; margin-top: 48px; }
    .hero-stat { display: flex; flex-direction: column; }
    .hero-stat .num { font-size: 1.8rem; font-weight: 800; color: var(--secondary); }
    .hero-stat .label { font-size: 13px; opacity: 0.75; margin-top: 2px; }

    /* 安全指标卡 */
    .stats-section { background: var(--light); }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; }
    .stat-card {
      background: #fff; border-radius: var(--radius); padding: 32px 28px; text-align: center;
      box-shadow: var(--shadow-sm); border: 1px solid #eef2f7; transition: all 0.35s;
    }
    .stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
    .stat-card .icon {
      width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 14px;
      display: flex; align-items: center; justify-content: center; font-size: 22px; color: #fff;
    }
    .stat-card .num { font-size: 2rem; font-weight: 800; color: var(--dark); }
    .stat-card .label { font-size: 14px; color: #5a6b7b; margin-top: 4px; }

    /* 核心安全服务 */
    .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
    .feature-card {
      background: #fff; border-radius: var(--radius); padding: 36px 30px;
      box-shadow: var(--shadow-sm); border: 1px solid #eef2f7; transition: all 0.35s;
      position: relative; overflow: hidden;
    }
    .feature-card::before {
      content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
      background: linear-gradient(90deg, var(--accent), var(--secondary)); opacity: 0; transition: opacity 0.3s;
    }
    .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
    .feature-card:hover::before { opacity: 1; }
    .feature-card .icon-wrap {
      width: 60px; height: 60px; border-radius: 16px; margin-bottom: 20px;
      display: flex; align-items: center; justify-content: center; font-size: 24px;
    }
    .feature-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
    .feature-card p { color: #5a6b7b; font-size: 15px; line-height: 1.7; }

    /* 安全流程/时间线 */
    .process-section { background: linear-gradient(135deg, #0b1622 0%, var(--primary) 100%); color: #fff; }
    .process-section .section-title { color: #fff; }
    .process-section .section-sub { color: rgba(255,255,255,0.7); }
    .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 56px; position: relative; }
    .process-grid::before {
      content: ''; position: absolute; top: 32px; left: 10%; right: 10%; height: 2px;
      background: linear-gradient(90deg, var(--secondary) 0%, var(--accent) 100%); opacity: 0.4;
    }
    .process-step { text-align: center; position: relative; padding: 0 12px; }
    .step-num {
      width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 50%;
      background: rgba(255,255,255,0.1); border: 2px solid var(--secondary);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.4rem; font-weight: 800; color: var(--secondary); position: relative; z-index: 2;
      backdrop-filter: blur(4px);
    }
    .process-step h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
    .process-step p { font-size: 14px; opacity: 0.75; line-height: 1.65; }

    /* 安全资讯卡片 */
    .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
    .news-card {
      background: #fff; border-radius: var(--radius); overflow: hidden;
      box-shadow: var(--shadow-sm); border: 1px solid #eef2f7; transition: all 0.35s;
      display: flex; flex-direction: column;
    }
    .news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
    .news-card .cover-wrap { position: relative; overflow: hidden; height: 200px; }
    .news-card .cover-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
    .news-card:hover .cover-wrap img { transform: scale(1.05); }
    .news-tag {
      position: absolute; top: 14px; left: 14px; background: var(--secondary); color: #fff;
      font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px;
      box-shadow: 0 4px 12px rgba(232, 181, 74, 0.3);
    }
    .news-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
    .news-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--dark); margin-bottom: 10px; line-height: 1.5; }
    .news-body p { font-size: 14px; color: #5a6b7b; flex: 1; }
    .news-meta { display: flex; align-items: center; gap: 16px; margin-top: 16px; font-size: 13px; color: #94a3b8; }
    .news-link { color: var(--accent); font-weight: 600; font-size: 14px; margin-top: 14px; display: inline-flex; align-items: center; gap: 6px; }
    .news-link:hover { color: var(--primary); }

    /* 安全指南 FAQ */
    .faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 48px; }
    .faq-item {
      background: #fff; border-radius: 14px; padding: 28px 30px;
      box-shadow: var(--shadow-sm); border: 1px solid #eef2f7; transition: all 0.3s;
    }
    .faq-item:hover { box-shadow: var(--shadow-md); }
    .faq-item h3 { display: flex; align-items: center; gap: 12px; font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
    .faq-item h3 .faq-icon {
      width: 32px; height: 32px; background: var(--light); border-radius: 8px;
      display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 14px;
      flex-shrink: 0;
    }
    .faq-item p { font-size: 14.5px; color: #5a6b7b; line-height: 1.7; }

    /* CTA */
    .cta-section {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      border-radius: 24px; padding: 64px 48px; text-align: center; color: #fff;
      position: relative; overflow: hidden;
      margin: 88px 0;
    }
    .cta-section::before {
      content: ''; position: absolute; top: -60px; right: -60px; width: 200px; height: 200px;
      background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    }
    .cta-section h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }
    .cta-section p { opacity: 0.85; max-width: 600px; margin: 0 auto 28px; font-size: 1.05rem; }
    .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

    /* 页脚 */
    .site-footer { background: var(--dark); color: #b8c7d8; padding: 64px 0 24px; }
    .footer-grid {
      display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px;
      padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand .brand-logo { margin-bottom: 16px; }
    .footer-brand .logo-text { color: #fff; }
    .footer-brand p { font-size: 14px; line-height: 1.75; opacity: 0.75; }
    .footer-links h4 { color: #fff; font-size: 16px; margin-bottom: 18px; font-weight: 600; }
    .footer-links a { display: block; padding: 6px 0; font-size: 14px; opacity: 0.75; transition: all 0.3s; }
    .footer-links a:hover { opacity: 1; color: var(--secondary); padding-left: 4px; }
    .footer-contact p { font-size: 14px; padding: 6px 0; display: flex; align-items: center; gap: 10px; opacity: 0.75; }
    .footer-contact i { color: var(--secondary); width: 16px; text-align: center; }
    .footer-bottom {
      display: flex; justify-content: space-between; align-items: center;
      padding-top: 24px; font-size: 13px; flex-wrap: wrap; gap: 8px; opacity: 0.6;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .process-grid { grid-template-columns: repeat(2, 1fr); }
      .process-grid::before { display: none; }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .faq-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .hero-title { font-size: 2.4rem; }
    }
    @media (max-width: 768px) {
      .section-pad { padding: 64px 0; }
      .header-row { flex-wrap: wrap; gap: 12px; }
      .search-box { display: none; }
      .section-title { font-size: 1.8rem; }
      .hero-title { font-size: 2rem; }
      .hero-stats { gap: 24px; flex-wrap: wrap; }
      .stats-grid { grid-template-columns: 1fr 1fr; }
      .features-grid { grid-template-columns: 1fr; }
      .process-grid { grid-template-columns: 1fr; }
      .process-step { max-width: 300px; margin: 0 auto; }
      .news-grid { grid-template-columns: 1fr; }
      .cta-section { padding: 40px 24px; }
      .cta-section h2 { font-size: 1.6rem; }
    }
    @media (max-width: 520px) {
      .container-x { padding: 0 16px; }
      .stats-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .hero-actions { flex-direction: column; }
      .hero-title { font-size: 1.7rem; }
      .nav-item { padding: 12px 14px; font-size: 14px; }
      .breadcrumb { font-size: 13px; }
    }