/* roulang page: index */
:root {
    --primary: #0F3B34;
    --accent: #C8A86B;
    --accent-dark: #A5834A;
    --bg: #FAF8F3;
    --bg-light: #F4F1EA;
    --dark-bg: #0B2522;
    --text: #1F2A28;
    --text-secondary: #5A6B66;
    --border: #E3DED4;
    --success: #5E9B6E;
    --radius-card: 16px;
    --radius-btn: 10px;
    --shadow: 0 1px 3px rgba(15,59,52,0.06);
    --shadow-hover: 0 12px 32px rgba(15,59,52,0.12);
    --transition: 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
    --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

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

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

  ul, ol {
    list-style: none;
  }

  button, input, select, textarea {
    font-family: inherit;
    font-size: 100%;
    outline: none;
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--accent);
    color: #0B2522;
    font-weight: 600;
    font-size: 15px;
    border: 2px solid transparent;
    border-radius: var(--radius-btn);
    padding: 14px 32px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
    line-height: 1.4;
    white-space: nowrap;
  }
  .btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(200, 168, 107, 0.4);
  }
  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(200, 168, 107, 0.3);
  }
  .btn-primary:focus-visible {
    outline: 3px solid rgba(200, 168, 107, 0.45);
    outline-offset: 2px;
  }
  .btn-primary.btn-sm {
    padding: 10px 22px;
    font-size: 14px;
  }
  .btn-primary.btn-lg {
    padding: 16px 42px;
    font-size: 16px;
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: var(--radius-btn);
    padding: 14px 32px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
    line-height: 1.4;
    white-space: nowrap;
  }
  .btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
  }
  .btn-outline:active {
    transform: translateY(0);
  }
  .btn-outline:focus-visible {
    outline: 3px solid rgba(200, 168, 107, 0.3);
    outline-offset: 2px;
  }

  /* 导航 */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11, 37, 34, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.3s ease, box-shadow 0.3s ease;
  }
  .site-header.scrolled {
    background: rgba(11, 37, 34, 0.97);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
  }
  .brand-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px rgba(200, 168, 107, 0.25);
  }
  .brand-text {
    font-family: var(--font-serif);
    font-size: 21px;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: #fff;
    line-height: 1.3;
  }
  .badge-official {
    background: rgba(94, 155, 110, 0.2);
    border: 1px solid rgba(94, 155, 110, 0.5);
    color: #8FCE9D;
    font-size: 11px;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 999px;
    letter-spacing: 0.05em;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 36px;
  }
  .main-nav .nav-link {
    color: rgba(255, 255, 255, 0.72);
    font-size: 15px;
    font-weight: 500;
    padding: 6px 2px;
    position: relative;
    text-decoration: none;
    transition: color 0.25s ease;
  }
  .main-nav .nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0%;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s ease;
  }
  .main-nav .nav-link:hover {
    color: #fff;
  }
  .main-nav .nav-link:hover::after {
    width: 100%;
  }
  .main-nav .nav-link.active {
    color: #fff;
    font-weight: 600;
  }
  .main-nav .nav-link.active::after {
    width: 100%;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
  }
  .online-status {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    padding: 5px 14px;
    border-radius: 999px;
  }
  .status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 1.8s ease-in-out infinite;
  }
  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
  }

  .mobile-toggle {
    display: none;
    flex-direction: column;
    width: 44px;
    height: 44px;
    justify-content: center;
    align-items: center;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: 8px;
  }
  .mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 4px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .mobile-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .mobile-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .mobile-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .menu-mask {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  .menu-mask.show {
    display: block;
    opacity: 1;
  }

  /* Hero */
  .hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 140px 0 100px;
    overflow: hidden;
  }
  .hero-bg {
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    transform: scale(1.05);
  }
  .hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11, 37, 34, 0.9) 0%, rgba(15, 59, 52, 0.78) 100%);
  }
  .hero-bg-animate {
    animation: slowZoom 18s ease-in-out infinite alternate;
  }
  @keyframes slowZoom {
    from { transform: scale(1); }
    to { transform: scale(1.08); }
  }

  .hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 860px;
  }
  .hero-tag {
    display: inline-block;
    background: rgba(200, 168, 107, 0.15);
    border: 1px solid rgba(200, 168, 107, 0.45);
    color: var(--accent);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 20px;
    border-radius: 999px;
    margin-bottom: 28px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .hero-content h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.75rem, 6vw, 4.25rem);
    font-weight: 700;
    line-height: 1.25;
    color: #fff;
    letter-spacing: 0.03em;
    margin-bottom: 22px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
  }
  .hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.8;
    max-width: 640px;
    margin: 0 auto 38px;
    font-weight: 300;
  }
  .hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
  }
  .hero-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
  }
  .hero-dots .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    transition: all 0.3s ease;
  }
  .hero-dots .dot.active {
    width: 24px;
    border-radius: 999px;
    background: var(--accent);
  }

  /* 数据条 */
  .stats {
    background: var(--bg);
    padding: 72px 0;
    border-bottom: 1px solid var(--border);
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    text-align: center;
  }
  .stat-item {
    padding: 16px;
  }
  .stat-number {
    display: block;
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--primary);
    font-family: var(--font-serif);
    line-height: 1.2;
    margin-bottom: 8px;
  }
  .stat-number .suffix {
    font-size: 1.4rem;
    color: var(--accent);
    margin-left: 2px;
  }
  .stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
  }

  /* 通用板块头 */
  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
  }
  .section-head h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary);
    line-height: 1.35;
    margin-bottom: 14px;
    position: relative;
    display: inline-block;
  }
  .section-head h2::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin: 16px auto 0;
  }
  .section-head p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-top: 14px;
  }

  /* 核心服务 */
  .services {
    padding: 96px 0;
    background: var(--bg);
  }
  .services-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 28px;
  }
  .service-card {
    background: #fff;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
    display: flex;
    flex-direction: column;
  }
  .service-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
    border-color: rgba(200, 168, 107, 0.4);
  }
  .service-card-main {
    grid-column: span 7;
  }
  .service-card-sub {
    grid-column: span 5;
  }
  .service-card-half {
    grid-column: span 6;
  }
  .service-img {
    overflow: hidden;
    position: relative;
    aspect-ratio: 16/10;
  }
  .service-card-main .service-img {
    aspect-ratio: 21/11;
  }
  .service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
  }
  .service-card:hover .service-img img {
    transform: scale(1.05);
  }
  .service-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11, 37, 34, 0.15) 0%, transparent 40%);
  }
  .service-body {
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
  }
  .service-body h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text);
    font-family: var(--font-serif);
    line-height: 1.4;
  }
  .service-body p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.75;
    flex: 1;
  }
  .learn-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    margin-top: 12px;
    transition: color 0.2s ease, gap 0.2s ease;
  }
  .learn-more i {
    font-style: normal;
    transition: transform 0.2s ease;
  }
  .learn-more:hover {
    color: var(--accent-dark);
  }
  .learn-more:hover i {
    transform: translateX(4px);
  }

  /* 资讯列表（CMS） */
  .news {
    padding: 96px 0;
    background: var(--bg-light);
  }
  .news-list {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  .news-card {
    display: flex;
    align-items: center;
    gap: 24px;
    background: #fff;
    border-radius: 14px;
    padding: 24px 28px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
  }
  .news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateX(4px);
    border-color: rgba(200, 168, 107, 0.4);
  }
  .news-date {
    flex-shrink: 0;
    width: 88px;
    text-align: center;
    padding: 10px 0;
    border-right: 1px solid var(--border);
    margin-right: 4px;
  }
  .news-date span {
    font-size: 13px;
    color: var(--accent-dark);
    font-weight: 600;
    line-height: 1.4;
  }
  .news-content {
    flex: 1;
    min-width: 0;
  }
  .news-tag {
    display: inline-block;
    background: rgba(15, 59, 52, 0.08);
    color: var(--primary);
    font-size: 12px;
    font-weight: 500;
    padding: 3px 12px;
    border-radius: 999px;
    margin-bottom: 8px;
    letter-spacing: 0.03em;
  }
  .news-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.5;
    transition: color 0.2s ease;
  }
  .news-card:hover .news-content h3 {
    color: var(--primary);
  }
  .news-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
  }
  .read-more {
    font-size: 13px;
    color: var(--accent-dark);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .read-more i {
    font-style: normal;
    transition: transform 0.2s ease;
  }
  .news-card:hover .read-more i {
    transform: translateX(4px);
  }
  .news-card-arrow {
    color: var(--border);
    font-size: 18px;
    flex-shrink: 0;
    transition: color 0.2s ease, transform 0.2s ease;
  }
  .news-card:hover .news-card-arrow {
    color: var(--accent);
    transform: translateX(4px);
  }
  .news-empty {
    text-align: center;
    background: #fff;
    border: 1px dashed var(--border);
    border-radius: 14px;
    padding: 60px 30px;
    color: var(--text-secondary);
    font-size: 15px;
  }

  /* 评价轮播 */
  .testimonials {
    padding: 96px 0;
    background: var(--dark-bg);
  }
  .testimonials .section-head h2 {
    color: #fff;
  }
  .testimonials .section-head h2::after {
    background: var(--accent);
  }
  .testimonials .section-head p {
    color: rgba(255, 255, 255, 0.6);
  }
  .testimonial-carousel {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
  }
  .testimonial-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
  }
  .testimonial-slide {
    flex: 0 0 100%;
    min-width: 0;
    padding: 20px;
  }
  .testimonial-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 48px 56px;
    text-align: center;
    backdrop-filter: blur(6px);
  }
  .testimonial-card .quote-icon {
    font-family: var(--font-serif);
    font-size: 4rem;
    color: var(--accent);
    line-height: 0.8;
    margin-bottom: 20px;
    opacity: 0.6;
  }
  .testimonial-card blockquote {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.92);
    font-weight: 400;
    margin-bottom: 28px;
    max-width: 660px;
    margin-left: auto;
    margin-right: auto;
  }
  .testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
  }
  .author-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #D9C897);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: #0B2522;
    flex-shrink: 0;
  }
  .author-info {
    text-align: left;
  }
  .author-info strong {
    display: block;
    font-size: 15px;
    color: #fff;
    font-weight: 600;
  }
  .author-info span {
    display: block;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
  }
  .carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 32px;
  }
  .carousel-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
  }
  .carousel-btn:hover {
    background: var(--accent);
    color: #0B2522;
    border-color: var(--accent);
  }
  .carousel-btn:focus-visible {
    outline: 3px solid rgba(200, 168, 107, 0.4);
  }
  .carousel-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
  }
  .carousel-dots .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    padding: 0;
  }
  .carousel-dots .dot.active {
    width: 24px;
    border-radius: 999px;
    background: var(--accent);
  }

  /* 保障条 */
  .guarantee {
    padding: 72px 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }
  .guarantee-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
  }
  .guarantee-item {
    text-align: center;
    padding: 24px 16px;
    border-radius: 14px;
    transition: background 0.3s ease;
  }
  .guarantee-item:hover {
    background: var(--bg-light);
  }
  .guarantee-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(200, 168, 107, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: transform 0.3s ease;
  }
  .guarantee-item:hover .guarantee-icon {
    transform: rotate(-5deg) scale(1.05);
  }
  .guarantee-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--accent-dark);
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
  .guarantee-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
    font-family: var(--font-sans);
  }
  .guarantee-item p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
  }

  /* FAQ */
  .faq {
    padding: 96px 0;
    background: var(--bg);
  }
  .faq-list {
    max-width: 820px;
    margin: 0 auto;
  }
  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .faq-item.active {
    border-color: rgba(200, 168, 107, 0.5);
    box-shadow: var(--shadow);
  }
  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: transparent;
    border: none;
    padding: 22px 28px;
    cursor: pointer;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
    transition: color 0.2s ease;
  }
  .faq-question:hover {
    color: var(--primary);
  }
  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(15, 59, 52, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
    font-weight: 300;
    color: var(--primary);
    transition: all 0.3s ease;
    line-height: 1;
  }
  .faq-item.active .faq-icon {
    background: var(--accent);
    color: #0B2522;
    transform: rotate(45deg);
  }
  .faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  }
  .faq-item.active .faq-answer {
    grid-template-rows: 1fr;
  }
  .faq-answer-inner {
    overflow: hidden;
  }
  .faq-answer p {
    padding: 0 28px 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    border-top: 1px solid var(--border);
    padding-top: 16px;
  }

  /* CTA */
  .cta {
    position: relative;
    padding: 110px 0;
    background: url('/assets/images/backpic/back-3.png') center/cover fixed no-repeat;
  }
  .cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(11, 37, 34, 0.85);
  }
  .cta-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 680px;
  }
  .cta-inner h2 {
    font-family: var(--font-serif);
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 700;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 18px;
  }
  .cta-inner p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 36px;
    line-height: 1.8;
  }
  .cta-tips {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 28px;
    flex-wrap: wrap;
  }
  .cta-tips .tip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 5px 14px;
    border-radius: 999px;
  }

  /* 页脚 */
  .site-footer {
    background: var(--dark-bg);
    padding: 72px 0 0;
    color: rgba(255, 255, 255, 0.7);
  }
  .footer-top {
    display: grid;
    grid-template-columns: 1.4fr 2fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .footer-brand .brand-text {
    font-size: 24px;
    color: #fff;
    display: inline-block;
    margin-bottom: 14px;
  }
  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
    max-width: 300px;
  }
  .footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
  .footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 0.03em;
  }
  .footer-col a {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    padding: 5px 0;
    transition: color 0.2s ease;
  }
  .footer-col a:hover {
    color: var(--accent);
  }
  .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 24px 0 32px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
  }
  .footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.2s ease;
  }
  .footer-bottom a:hover {
    color: var(--accent);
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1199px) {
    .services-grid {
      gap: 20px;
    }
    .service-card-main {
      grid-column: span 12;
    }
    .service-card-sub {
      grid-column: span 6;
    }
    .service-card-half {
      grid-column: span 6;
    }
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .guarantee-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
  }

  @media (max-width: 767px) {
    .container {
      padding: 0 16px;
    }
    .header-inner {
      height: 64px;
    }
    .brand-text {
      font-size: 18px;
    }
    .badge-official,
    .online-status {
      display: none;
    }
    .mobile-toggle {
      display: flex;
    }
    .main-nav {
      position: fixed;
      top: 0;
      right: -100%;
      width: 300px;
      height: 100vh;
      background: var(--primary);
      flex-direction: column;
      align-items: flex-start;
      padding: 90px 40px 40px;
      gap: 8px;
      transition: right 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
      z-index: 999;
      box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    }
    .main-nav.open {
      right: 0;
    }
    .main-nav .nav-link {
      font-size: 18px;
      padding: 14px 0;
      color: rgba(255, 255, 255, 0.85);
      width: 100%;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .main-nav .nav-link::after {
      display: none;
    }
    .main-nav .nav-link.active {
      color: var(--accent);
    }
    .header-actions {
      display: none;
    }
    .hero {
      padding: 120px 0 80px;
      min-height: auto;
    }
    .hero-content h1 {
      font-size: 2.4rem;
    }
    .hero-subtitle {
      font-size: 15px;
      padding: 0 8px;
    }
    .hero-actions {
      flex-direction: column;
      width: 100%;
    }
    .hero-actions .btn-primary,
    .hero-actions .btn-outline {
      width: 100%;
    }
    .stats {
      padding: 48px 0;
    }
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .stat-number {
      font-size: 2rem;
    }
    .services,
    .news,
    .testimonials,
    .faq {
      padding: 64px 0;
    }
    .section-head {
      margin-bottom: 36px;
    }
    .services-grid {
      grid-template-columns: 1fr;
    }
    .service-card-main,
    .service-card-sub,
    .service-card-half {
      grid-column: span 1;
    }
    .service-img,
    .service-card-main .service-img {
      aspect-ratio: 16/10;
    }
    .service-body {
      padding: 20px;
    }
    .news-card {
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
      padding: 20px;
    }
    .news-date {
      width: auto;
      border-right: none;
      border-bottom: 1px solid var(--border);
      padding: 0 0 6px;
      margin-right: 0;
      width: 100%;
      text-align: left;
    }
    .news-card-arrow {
      display: none;
    }
    .testimonial-card {
      padding: 28px 20px;
    }
    .testimonial-card blockquote {
      font-size: 1.1rem;
    }
    .guarantee {
      padding: 48px 0;
    }
    .guarantee-grid {
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .footer-top {
      grid-template-columns: 1fr;
      gap: 32px;
    }
    .footer-links {
      grid-template-columns: repeat(2, 1fr);
    }
    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
  }

  @media (max-width: 480px) {
    .stats-grid {
      grid-template-columns: 1fr;
    }
    .guarantee-grid {
      grid-template-columns: 1fr;
    }
    .footer-links {
      grid-template-columns: 1fr;
    }
  }

  @media (hover: none) {
    .service-card:hover {
      transform: none;
    }
    .btn-primary:hover {
      transform: none;
    }
    .btn-outline:hover {
      transform: none;
    }
    .news-card:hover {
      transform: none;
    }
  }

/* roulang page: category1 */
:root {
            --primary: #0F3B34;
            --primary-dark: #0B2522;
            --accent: #C8A86B;
            --accent-light: #D9BF8E;
            --accent-dark: #A8874F;
            --bg: #FAF8F3;
            --bg-light: #F4F1EA;
            --text: #1F2A28;
            --text-secondary: #5A6B66;
            --border: #E3DED4;
            --success: #5E9B6E;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 1px 3px rgba(15, 59, 52, 0.06);
            --shadow-lg: 0 12px 32px rgba(15, 59, 52, 0.12);
            --transition: all 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
            --container: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 600;
            line-height: 1.35;
            color: var(--primary);
        }
        h1,
        h2 {
            font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 59, 52, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 37, 34, 0.96);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(200, 168, 107, 0.2);
        }
        .brand-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .brand-badge {
            font-size: 0.68rem;
            color: #fff;
            background: rgba(94, 155, 110, 0.85);
            padding: 2px 8px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            font-weight: 500;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            position: relative;
            color: rgba(255, 255, 255, 0.78);
            font-size: 0.95rem;
            padding: 10px 16px;
            border-radius: 8px;
            font-weight: 500;
            transition: var(--transition);
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            transform: translateX(-50%);
            transition: var(--transition);
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after {
            width: 22px;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            width: 22px;
            background: var(--accent);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
        }
        .header-status::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 0 3px rgba(94, 155, 110, 0.25);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: #fff;
            transition: var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 10px;
            line-height: 1.2;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(200, 168, 107, 0.4);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--accent);
            color: #0B2522;
            box-shadow: 0 4px 16px rgba(200, 168, 107, 0.25);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            color: #0B2522;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 168, 107, 0.35);
        }
        .btn-primary:active {
            background: var(--accent-dark);
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(200, 168, 107, 0.2);
        }
        .btn-primary:disabled {
            opacity: 0.55;
            cursor: not-allowed;
            transform: none;
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-outline-light:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 9px 20px;
            font-size: 0.88rem;
            border-radius: 8px;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.05rem;
            border-radius: 12px;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 168px 0 96px;
            background-size: cover;
            background-position: center;
            background-color: var(--primary);
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 37, 34, 0.92) 0%, rgba(11, 37, 34, 0.72) 55%, rgba(11, 37, 34, 0.55) 100%);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .breadcrumb {
            display: inline-flex;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            gap: 6px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .page-banner h1 {
            font-size: 3rem;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .page-banner .banner-sub {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.8;
            max-width: 640px;
            margin-bottom: 34px;
        }
        .banner-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .banner-status {
            position: relative;
            z-index: 2;
            margin-top: 40px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.72);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            padding: 8px 20px;
        }
        .banner-status .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 0 4px rgba(94, 155, 110, 0.2);
        }

        /* ===== Section common ===== */
        .section-pad {
            padding: 96px 0;
        }
        .section-head {
            max-width: 720px;
            margin: 0 auto 56px;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-dark);
            background: rgba(200, 168, 107, 0.12);
            border: 1px solid rgba(200, 168, 107, 0.2);
            padding: 4px 16px;
            border-radius: 999px;
            letter-spacing: 0.06em;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-head h2 {
            font-size: 2.1rem;
            margin-bottom: 16px;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 1rem;
        }

        /* ===== Intro ===== */
        .intro-section {
            background: var(--bg);
            padding: 96px 0;
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 64px;
            align-items: center;
        }
        .intro-text .section-tag {
            margin-bottom: 18px;
        }
        .intro-text h2 {
            font-size: 2.1rem;
            margin-bottom: 20px;
            line-height: 1.4;
        }
        .intro-text>p {
            color: var(--text-secondary);
            font-size: 1.02rem;
            margin-bottom: 32px;
        }
        .check-list {
            display: grid;
            gap: 14px;
        }
        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.6;
        }
        .check-list li::before {
            content: "";
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(200, 168, 107, 0.15);
            border: 1px solid var(--accent);
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A8874F' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
            background-size: 11px;
            background-position: center;
            background-repeat: no-repeat;
            margin-top: 2px;
        }
        .intro-media {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .intro-media img {
            width: 100%;
            height: 440px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .intro-media:hover img {
            transform: scale(1.04);
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--bg-light);
            padding: 96px 0;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .step-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            position: relative;
            transition: var(--transition);
        }
        .step-item::before {
            content: "";
            position: absolute;
            top: 50%;
            right: -25px;
            width: 25px;
            height: 1px;
            background: var(--border);
            display: none;
        }
        .step-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(200, 168, 107, 0.4);
        }
        .step-num {
            font-size: 2.6rem;
            font-weight: 700;
            color: transparent;
            -webkit-text-stroke: 1.5px var(--accent);
            line-height: 1;
            display: inline-block;
            margin-bottom: 20px;
            font-family: "Noto Serif SC", "Songti SC", serif;
        }
        .step-item h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== Methods ===== */
        .methods-section {
            background: var(--bg);
            padding: 96px 0;
        }
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .method-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .method-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(200, 168, 107, 0.35);
        }
        .method-img {
            height: 200px;
            overflow: hidden;
        }
        .method-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .method-card:hover .method-img img {
            transform: scale(1.06);
        }
        .method-body {
            padding: 28px 28px 32px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .method-body h3 {
            font-size: 1.12rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .method-body h3::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }
        .method-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
        }

        /* ===== Security ===== */
        .security-section {
            background: var(--primary);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }
        .security-section::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -100px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(200, 168, 107, 0.06);
        }
        .security-section .section-head h2 {
            color: #fff;
        }
        .security-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .security-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 36px 24px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .security-item:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(200, 168, 107, 0.35);
            transform: translateY(-4px);
        }
        .security-icon {
            width: 50px;
            height: 50px;
            margin: 0 auto 18px;
            border-radius: 12px;
            background: rgba(200, 168, 107, 0.12);
            border: 1px solid rgba(200, 168, 107, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
        }
        .security-item h3 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 10px;
            font-family: system-ui, -apple-system, "PingFang SC", sans-serif;
        }
        .security-item p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.84rem;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
            padding: 96px 0;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(200, 168, 107, 0.4);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 28px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            transition: var(--transition);
        }
        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .faq-icon::before {
            width: 12px;
            height: 2px;
        }
        .faq-icon::after {
            width: 2px;
            height: 12px;
        }
        .faq-item.active .faq-icon {
            background: var(--accent);
            border-color: var(--accent);
        }
        .faq-item.active .faq-icon::before,
        .faq-item.active .faq-icon::after {
            background: #0B2522;
        }
        .faq-item.active .faq-icon::after {
            transform: scaleY(0);
        }
        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
        }
        .faq-item.active .faq-answer {
            grid-template-rows: 1fr;
        }
        .faq-answer-inner {
            overflow: hidden;
        }
        .faq-answer p {
            padding: 0 28px 24px;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.85;
            border-top: 1px solid var(--border);
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(200, 168, 107, 0.08);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 2.2rem;
            margin-bottom: 18px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            margin-bottom: 36px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            padding: 72px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 2fr;
            gap: 60px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-text {
            font-size: 1.35rem;
            color: #fff;
            font-weight: 700;
            display: block;
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 20px;
            font-weight: 600;
            font-family: system-ui, -apple-system, sans-serif;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom p {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.8rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Reveal animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .methods-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .intro-media img {
                height: 320px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .brand-text {
                font-size: 1.05rem;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 37, 34, 0.98);
                backdrop-filter: blur(14px);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px 32px;
                gap: 4px;
                transform: translateY(-120%);
                transition: transform 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .nav-link {
                width: 100%;
                padding: 14px 12px;
                border-radius: 8px;
                color: rgba(255, 255, 255, 0.85);
            }
            .nav-link::after {
                left: 12px;
                right: auto;
                transform: none;
                bottom: 8px;
            }
            .nav-link.active {
                background: rgba(200, 168, 107, 0.12);
                color: #fff;
            }
            .header-actions {
                gap: 10px;
            }
            .header-status {
                display: none;
            }
            .page-banner {
                padding: 130px 0 64px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .banner-sub {
                font-size: 0.95rem;
            }
            .section-pad,
            .intro-section,
            .steps-section,
            .methods-section,
            .security-section,
            .faq-section,
            .cta-section {
                padding: 64px 0;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-links {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .intro-text h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .steps-grid,
            .methods-grid,
            .security-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                width: 100%;
            }
            .banner-actions {
                flex-direction: column;
                gap: 12px;
            }
            .intro-media img {
                height: 240px;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .cta-inner h2 {
                font-size: 1.6rem;
            }
        }

/* roulang page: article */
:root {
        --primary: #0F3B34;
        --primary-dark: #0B2522;
        --primary-light: #1B4A42;
        --accent: #C8A86B;
        --accent-light: #E0C58A;
        --accent-dark: #A88C4E;
        --bg: #FAF8F3;
        --bg-alt: #F4F1EA;
        --white: #ffffff;
        --text: #1F2A28;
        --text-light: #5A6B66;
        --border: #E3DED4;
        --success: #5E9B6E;
        --radius-card: 14px;
        --radius-btn: 9px;
        --radius-pill: 999px;
        --shadow-sm: 0 1px 3px rgba(15, 59, 52, 0.06);
        --shadow-lg: 0 12px 32px rgba(15, 59, 52, 0.12);
        --font-body: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        --font-head: "Noto Serif SC", "Songti SC", serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-body);
        background: var(--bg);
        color: var(--text);
        line-height: 1.8;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }

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

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

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

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

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }

    .btn-primary,
    .btn-outline {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        border-radius: var(--radius-btn);
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        line-height: 1.4;
        transition: all 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
        border: 1px solid transparent;
    }

    .btn-primary {
        background: var(--accent);
        color: #16211E;
        border-color: var(--accent);
        box-shadow: 0 2px 8px rgba(200, 168, 107, 0.25);
    }

    .btn-primary:hover {
        background: var(--accent-light);
        border-color: var(--accent-light);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(200, 168, 107, 0.35);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 2px 6px rgba(200, 168, 107, 0.25);
    }

    .btn-primary:focus-visible,
    .btn-outline:focus-visible {
        outline: 3px solid rgba(200, 168, 107, 0.4);
        outline-offset: 2px;
    }

    .btn-outline {
        background: transparent;
        color: var(--white);
        border-color: rgba(255, 255, 255, 0.4);
    }

    .btn-outline:hover {
        border-color: var(--accent);
        color: var(--accent);
        transform: translateY(-2px);
    }

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

    .btn-sm {
        padding: 9px 20px;
        font-size: 14px;
    }

    .btn-lg {
        padding: 15px 36px;
        font-size: 16px;
        border-radius: 10px;
    }

    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(15, 59, 52, 0.82);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        transition: background 0.3s ease, box-shadow 0.3s ease;
    }

    .site-header.scrolled {
        background: var(--primary-dark);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 16px;
    }

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

    .brand-dot {
        width: 32px;
        height: 32px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--accent) 0%, #B68D52 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #16211E;
        font-size: 16px;
        font-weight: 800;
    }

    .brand-text {
        font-family: var(--font-head);
        font-size: 20px;
        font-weight: 700;
        color: var(--white);
        letter-spacing: 0.02em;
        white-space: nowrap;
    }

    .brand-badge {
        background: var(--accent);
        color: #16211E;
        font-size: 11px;
        font-weight: 700;
        padding: 2px 8px;
        border-radius: var(--radius-pill);
        letter-spacing: 0.04em;
        flex-shrink: 0;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 28px;
    }

    .nav-link {
        position: relative;
        color: rgba(255, 255, 255, 0.85);
        font-size: 15px;
        font-weight: 500;
        padding: 6px 2px;
        transition: color 0.25s ease;
    }

    .nav-link::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: -2px;
        width: 0;
        height: 2px;
        background: var(--accent);
        border-radius: 2px;
        transition: width 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
    }

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

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

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

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

    .header-actions {
        display: flex;
        align-items: center;
        gap: 14px;
        flex-shrink: 0;
    }

    .status-pill {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: var(--radius-pill);
        padding: 5px 12px;
        font-size: 12px;
        color: rgba(255, 255, 255, 0.9);
        white-space: nowrap;
    }

    .status-dot {
        width: 7px;
        height: 7px;
        border-radius: 50%;
        background: var(--success);
        box-shadow: 0 0 0 3px rgba(94, 155, 110, 0.25);
    }

    .nav-toggle {
        display: none;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        flex-direction: column;
        gap: 5px;
    }

    .nav-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--white);
        border-radius: 2px;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .article-hero {
        background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
        padding: 130px 0 44px;
        border-bottom: 1px solid var(--border);
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 6px;
        font-size: 14px;
        color: var(--text-light);
        margin-bottom: 24px;
    }

    .breadcrumb a {
        color: var(--text-light);
        transition: color 0.2s ease;
    }

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

    .breadcrumb-sep {
        color: var(--border);
        font-size: 14px;
    }

    .breadcrumb-current {
        color: var(--text);
        font-weight: 500;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 220px;
    }

    .article-category {
        display: inline-block;
        background: rgba(200, 168, 107, 0.14);
        color: var(--accent-dark);
        font-size: 13px;
        font-weight: 600;
        padding: 5px 14px;
        border-radius: var(--radius-pill);
        margin-bottom: 14px;
    }

    .article-title {
        font-family: var(--font-head);
        font-size: 2.5rem;
        font-weight: 700;
        line-height: 1.35;
        color: var(--primary);
        max-width: 800px;
    }

    .article-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 18px;
        margin-top: 20px;
        font-size: 14px;
        color: var(--text-light);
    }

    .article-meta span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .article-meta .meta-divider {
        width: 3px;
        height: 3px;
        border-radius: 50%;
        background: var(--border);
    }

    .article-content {
        padding: 56px 0 72px;
    }

    .article-container {
        max-width: 820px;
        margin: 0 auto;
        padding: 0 24px;
    }

    .article-body {
        max-width: 760px;
        margin: 0 auto;
        font-size: 1.0625rem;
        line-height: 1.9;
        color: var(--text);
    }

    .article-body h2 {
        font-family: var(--font-head);
        font-size: 1.85rem;
        font-weight: 700;
        margin: 2em 0 0.7em;
        line-height: 1.4;
        color: var(--primary);
    }

    .article-body h3 {
        font-size: 1.375rem;
        font-weight: 600;
        margin: 1.8em 0 0.6em;
        line-height: 1.5;
        color: var(--primary);
    }

    .article-body p {
        margin: 1.2em 0;
    }

    .article-body ul,
    .article-body ol {
        margin: 1.2em 0 1.2em 1.6em;
    }

    .article-body li {
        margin: 0.5em 0;
    }

    .article-body blockquote {
        border-left: 4px solid var(--accent);
        background: var(--bg-alt);
        padding: 16px 24px;
        border-radius: 0 12px 12px 0;
        margin: 1.6em 0;
        color: var(--text-light);
        font-style: normal;
    }

    .article-body img {
        border-radius: var(--radius-card);
        margin: 1.6em auto;
        box-shadow: var(--shadow-sm);
    }

    .article-body a {
        color: var(--primary);
        text-decoration: underline;
        text-underline-offset: 4px;
        transition: color 0.2s ease;
    }

    .article-body a:hover {
        color: var(--accent-dark);
    }

    .article-body code {
        background: var(--bg-alt);
        padding: 2px 8px;
        border-radius: 6px;
        font-size: 0.9em;
        border: 1px solid var(--border);
    }

    .article-body pre {
        background: var(--primary-dark);
        color: #E8F0EC;
        padding: 20px 24px;
        border-radius: var(--radius-card);
        overflow-x: auto;
        margin: 1.6em 0;
        font-size: 0.95rem;
        line-height: 1.7;
    }

    .article-footer {
        max-width: 760px;
        margin: 48px auto 0;
        padding-top: 32px;
        border-top: 1px solid var(--border);
    }

    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 28px;
    }

    .tag {
        display: inline-block;
        background: var(--bg-alt);
        border: 1px solid var(--border);
        color: var(--text-light);
        font-size: 13px;
        padding: 6px 16px;
        border-radius: var(--radius-pill);
        transition: all 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
        cursor: default;
    }

    .tag:hover {
        border-color: var(--accent);
        color: var(--accent-dark);
        background: rgba(200, 168, 107, 0.06);
    }

    .article-back {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        flex-wrap: wrap;
    }

    .btn-back {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--bg-alt);
        border: 1px solid var(--border);
        border-radius: var(--radius-btn);
        padding: 10px 20px;
        font-size: 14px;
        font-weight: 600;
        color: var(--text);
        transition: all 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
    }

    .btn-back:hover {
        border-color: var(--accent);
        color: var(--accent-dark);
        transform: translateX(-4px);
        box-shadow: var(--shadow-sm);
    }

    .btn-back:active {
        transform: translateX(-2px);
    }

    .btn-back:focus-visible {
        outline: 3px solid rgba(200, 168, 107, 0.4);
        outline-offset: 2px;
    }

    .related-section {
        background: var(--bg-alt);
        padding: 72px 0;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

    .section-title {
        font-family: var(--font-head);
        font-size: 2rem;
        font-weight: 700;
        color: var(--primary);
        text-align: center;
        margin-bottom: 12px;
        line-height: 1.4;
    }

    .section-subtitle {
        text-align: center;
        color: var(--text-light);
        font-size: 15px;
        max-width: 520px;
        margin: 0 auto 40px;
    }

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

    .related-card {
        background: var(--white);
        border-radius: var(--radius-card);
        overflow: hidden;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        transition: all 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
        height: 100%;
    }

    .related-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-4px);
        border-color: rgba(200, 168, 107, 0.5);
    }

    .related-card a {
        display: flex;
        flex-direction: column;
        height: 100%;
    }

    .related-card-img {
        overflow: hidden;
        aspect-ratio: 16 / 10;
        background: var(--bg-alt);
    }

    .related-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
    }

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

    .related-card-body {
        padding: 22px 24px 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .card-badge {
        display: inline-block;
        background: rgba(200, 168, 107, 0.14);
        color: var(--accent-dark);
        font-size: 12px;
        font-weight: 600;
        padding: 3px 10px;
        border-radius: var(--radius-pill);
        align-self: flex-start;
    }

    .related-card-body h3 {
        font-size: 17px;
        font-weight: 600;
        line-height: 1.5;
        color: var(--primary);
        transition: color 0.2s ease;
    }

    .related-card:hover .related-card-body h3 {
        color: var(--accent-dark);
    }

    .related-card-body p {
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.7;
        flex: 1;
    }

    .card-more {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        margin-top: 4px;
        transition: color 0.2s ease, gap 0.2s ease;
    }

    .related-card:hover .card-more {
        color: var(--accent-dark);
        gap: 10px;
    }

    .cta-section {
        background: var(--primary-dark);
        padding: 80px 0;
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: "";
        position: absolute;
        top: -60%;
        right: -10%;
        width: 500px;
        height: 500px;
        border-radius: 50%;
        background: rgba(200, 168, 107, 0.05);
        pointer-events: none;
    }

    .cta-section::after {
        content: "";
        position: absolute;
        bottom: -80%;
        left: -5%;
        width: 400px;
        height: 400px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.03);
        pointer-events: none;
    }

    .cta-inner {
        position: relative;
        z-index: 1;
        text-align: center;
        max-width: 680px;
        margin: 0 auto;
    }

    .cta-inner h2 {
        font-family: var(--font-head);
        font-size: 2.1rem;
        font-weight: 700;
        color: var(--white);
        line-height: 1.4;
        margin-bottom: 14px;
    }

    .cta-inner p {
        color: rgba(255, 255, 255, 0.75);
        font-size: 16px;
        margin-bottom: 32px;
    }

    .cta-actions {
        display: flex;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }

    .site-footer {
        background: var(--primary-dark);
        color: rgba(255, 255, 255, 0.75);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-top {
        display: grid;
        grid-template-columns: 1.2fr 2fr;
        gap: 48px;
        padding: 64px 0 40px;
    }

    .footer-brand .brand-text {
        font-size: 20px;
        font-weight: 700;
        color: var(--white);
        display: block;
        margin-bottom: 10px;
    }

    .footer-brand p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.6);
        line-height: 1.8;
        max-width: 320px;
    }

    .footer-links {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 32px;
    }

    .footer-col h4 {
        font-size: 15px;
        font-weight: 600;
        color: var(--white);
        margin-bottom: 14px;
    }

    .footer-col a {
        display: block;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.6);
        line-height: 2;
        transition: color 0.2s ease, transform 0.2s ease;
    }

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

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 22px 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
    }

    .footer-bottom a {
        color: rgba(255, 255, 255, 0.45);
        transition: color 0.2s ease;
    }

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

    .not-found {
        text-align: center;
        padding: 60px 20px;
        background: var(--bg-alt);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        max-width: 600px;
        margin: 32px auto 0;
    }

    .not-found p {
        font-size: 18px;
        color: var(--text-light);
        margin-bottom: 24px;
    }

    .not-found .btn-primary {
        background: var(--accent);
        color: #16211E;
    }

    @media (max-width: 1024px) {
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .related-card:last-child {
            grid-column: span 2;
            max-width: 520px;
            margin: 0 auto;
            width: 100%;
        }

        .footer-top {
            grid-template-columns: 1fr;
            gap: 32px;
        }

        .footer-brand p {
            max-width: 100%;
        }
    }

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

        .main-nav {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100vh;
            background: var(--primary-dark);
            flex-direction: column;
            align-items: flex-start;
            padding: 90px 28px 28px;
            gap: 10px;
            transition: right 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
            box-shadow: -8px 0 30px rgba(0, 0, 0, 0.3);
            z-index: 999;
            overflow-y: auto;
        }

        .main-nav.open {
            right: 0;
        }

        .nav-link {
            width: 100%;
            padding: 12px 0;
            font-size: 17px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.85);
        }

        .nav-link::after {
            display: none;
        }

        .nav-link:hover {
            color: var(--accent);
            padding-left: 8px;
        }

        .nav-link.active {
            color: var(--accent);
            padding-left: 8px;
        }

        .status-pill {
            display: none;
        }

        .header-actions .btn-primary {
            padding: 8px 16px;
            font-size: 14px;
        }

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

        .brand-badge {
            font-size: 10px;
            padding: 2px 6px;
        }

        .article-hero {
            padding: 110px 0 32px;
        }

        .article-title {
            font-size: 1.8rem;
        }

        .article-meta {
            gap: 10px;
            font-size: 13px;
        }

        .article-content {
            padding: 40px 0 56px;
        }

        .article-body {
            font-size: 1rem;
        }

        .article-body h2 {
            font-size: 1.5rem;
        }

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

        .related-card:last-child {
            grid-column: auto;
            max-width: none;
        }

        .cta-inner h2 {
            font-size: 1.6rem;
        }

        .footer-links {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

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

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }

        .header-inner {
            height: 64px;
        }

        .header-actions .btn-primary {
            display: none;
        }

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

        .brand-dot {
            width: 28px;
            height: 28px;
            font-size: 14px;
            border-radius: 8px;
        }

        .article-hero {
            padding: 98px 0 28px;
        }

        .article-title {
            font-size: 1.5rem;
        }

        .article-body {
            font-size: 0.975rem;
        }

        .article-body blockquote {
            padding: 14px 18px;
        }

        .cta-section {
            padding: 60px 0;
        }

        .cta-actions {
            flex-direction: column;
            width: 100%;
        }

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

        .footer-links {
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
    }

/* roulang page: category3 */
:root {
            --primary: #0F3B34;
            --primary-dark: #0B2522;
            --accent: #C8A86B;
            --accent-light: #D9BE8A;
            --bg: #FAF8F3;
            --bg-soft: #F4F1EA;
            --text: #1F2A28;
            --text-light: #5A6B66;
            --border: #E3DED4;
            --success: #5E9B6E;
            --radius-card: 14px;
            --radius-btn: 10px;
            --shadow-card: 0 1px 3px rgba(15,59,52,0.06);
            --shadow-hover: 0 12px 32px rgba(15,59,52,0.12);
            --transition: 220ms cubic-bezier(0.22, 0.61, 0.36, 1);
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        h1, h2, h3, h4 {
            margin: 0;
            line-height: 1.35;
            color: var(--primary);
        }
        h1, h2 {
            font-family: "Noto Serif SC", "Songti SC", serif;
        }
        h1 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 600;
        }
        h2 {
            font-size: clamp(1.6rem, 3vw, 2.1rem);
            font-weight: 600;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
        }
        p {
            margin: 0 0 1em;
            line-height: 1.8;
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 37, 34, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 37, 34, 0.98);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand-logo {
            font-weight: 700;
            font-size: 1.4rem;
            color: #fff;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary-dark);
            font-weight: 800;
        }
        .official-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: #fff;
            background: var(--success);
            border-radius: 20px;
            padding: 2px 10px;
            font-weight: 500;
            line-height: 1.6;
        }
        .official-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #fff;
            display: inline-block;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav .nav-link {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .main-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 260ms cubic-bezier(0.22, 0.61, 0.36, 1);
            border-radius: 2px;
        }
        .main-nav .nav-link:hover {
            color: #fff;
        }
        .main-nav .nav-link:hover::after {
            width: 100%;
        }
        .main-nav .nav-link.active {
            color: #fff;
        }
        .main-nav .nav-link.active::after {
            width: 100%;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: #9AB3AC;
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 20px;
            padding: 3px 12px;
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-status i {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            display: inline-block;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 22px;
            border: none;
            transition: all var(--transition);
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(200, 168, 107, 0.4);
            outline-offset: 2px;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(200, 168, 107, 0.3);
        }
        .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 4px 10px rgba(200, 168, 107, 0.2);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .btn-outline-light:active {
            transform: translateY(0);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all 260ms ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端抽屉 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 300px;
            height: 100vh;
            background: var(--primary-dark);
            z-index: 99;
            padding: 80px 24px 40px;
            transform: translateX(100%);
            transition: transform 300ms cubic-bezier(0.22, 0.61, 0.36, 1);
            flex-direction: column;
        }
        .mobile-menu.open {
            transform: translateX(0);
        }
        .mobile-menu .nav-link {
            display: block;
            color: rgba(255, 255, 255, 0.8);
            font-size: 17px;
            font-weight: 500;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-menu .nav-link.active {
            color: var(--accent);
        }
        .mobile-menu .btn {
            margin-top: 28px;
        }
        .menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.4);
            z-index: 98;
        }
        .menu-overlay.open {
            display: block;
        }

        /* Banner */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #1A5C4E 100%);
            padding: 72px 0 64px;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 60%;
            height: 100%;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent);
            background: rgba(200, 168, 107, 0.15);
            border: 1px solid rgba(200, 168, 107, 0.4);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 20px;
        }
        .page-banner h1 {
            color: #fff;
            font-size: clamp(2rem, 4vw, 2.8rem);
            margin-bottom: 16px;
        }
        .banner-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            line-height: 1.8;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 28px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        /* 安全态势总览 */
        .security-overview {
            padding: 88px 0;
        }
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .overview-image {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }
        .overview-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .overview-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 30%;
            background: linear-gradient(to top, rgba(11, 37, 34, 0.5), transparent);
            pointer-events: none;
        }
        .overview-content .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .overview-content h2 {
            margin-bottom: 20px;
        }
        .overview-content p {
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .overview-points {
            margin-top: 24px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .overview-point {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
            background: var(--bg-soft);
            border-radius: 10px;
            padding: 14px 16px;
            border: 1px solid var(--border);
            transition: background var(--transition), border-color var(--transition);
        }
        .overview-point:hover {
            background: #fff;
            border-color: var(--accent);
        }
        .overview-point svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            margin-top: 2px;
            color: var(--accent);
        }

        /* 时间线 */
        .timeline-section {
            background: var(--bg-soft);
            padding: 88px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .timeline-section .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }
        .section-label-center {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .timeline-section .section-header h2 {
            margin-bottom: 12px;
        }
        .timeline-section .section-header p {
            color: var(--text-light);
            font-size: 15px;
        }
        .timeline {
            position: relative;
            max-width: 820px;
            margin: 0 auto;
            padding: 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, transparent, var(--accent) 8%, var(--border) 92%, transparent);
            transform: translateX(-50%);
        }
        .timeline-item {
            position: relative;
            width: 50%;
            padding-right: 48px;
            margin-bottom: 44px;
            text-align: right;
        }
        .timeline-item:nth-child(even) {
            margin-left: 50%;
            padding-right: 0;
            padding-left: 48px;
            text-align: left;
        }
        .timeline-dot {
            position: absolute;
            top: 8px;
            right: -6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid var(--bg-soft);
            box-shadow: 0 0 0 2px var(--accent);
        }
        .timeline-item:nth-child(even) .timeline-dot {
            right: auto;
            left: -6px;
        }
        .timeline-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 26px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
            display: inline-block;
            text-align: left;
            max-width: 100%;
            width: 100%;
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .timeline-phase {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(200, 168, 107, 0.12);
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.04em;
        }
        .timeline-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .timeline-card p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* 安全能力卡片 */
        .capability-section {
            padding: 88px 0;
        }
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 48px;
        }
        .capability-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
            position: relative;
            overflow: hidden;
        }
        .capability-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .capability-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .capability-card:hover::before {
            opacity: 1;
        }
        .capability-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(200, 168, 107, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
        }
        .capability-icon svg {
            width: 26px;
            height: 26px;
        }
        .capability-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }
        .capability-card p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* 安全指标数据条 */
        .metrics-bar {
            background: var(--primary);
            padding: 52px 0;
            color: #fff;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .metric-item {
            padding: 8px 0;
        }
        .metric-num {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--accent);
            font-family: "Noto Serif SC", "Songti SC", serif;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* FAQ */
        .faq-section {
            padding: 88px 0;
        }
        .faq-section .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item.active {
            box-shadow: 0 6px 20px rgba(15, 59, 52, 0.08);
            border-color: rgba(200, 168, 107, 0.4);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 28px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--accent);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform 300ms ease;
            position: relative;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--accent);
            border-radius: 2px;
        }
        .faq-icon::before {
            width: 10px;
            height: 1.5px;
        }
        .faq-icon::after {
            width: 1.5px;
            height: 10px;
            transition: opacity 200ms ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item.active .faq-icon::after {
            opacity: 0;
        }
        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 300ms cubic-bezier(0.22, 0.61, 0.36, 1);
        }
        .faq-item.active .faq-answer {
            grid-template-rows: 1fr;
        }
        .faq-answer-inner {
            overflow: hidden;
        }
        .faq-answer-inner p {
            padding: 0 28px 24px;
            margin: 0;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 72px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 页脚 */
        .site-footer {
            background: var(--primary-dark);
            color: #9AB3AC;
            padding: 64px 0 0;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 2fr;
            gap: 56px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
            color: #9AB3AC;
            max-width: 360px;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-family: "Noto Serif SC", "Songti SC", serif;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: #9AB3AC;
            padding: 5px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            font-size: 13px;
        }
        .footer-bottom a {
            color: #9AB3AC;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .overview-grid {
                gap: 36px;
            }
        }
        @media (max-width: 767px) {
            .header-inner {
                height: 60px;
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-status {
                display: none;
            }
            .mobile-menu {
                display: flex;
            }
            .page-banner {
                padding: 52px 0 48px;
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .overview-image img {
                height: 260px;
            }
            .overview-points {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 16px;
                transform: none;
            }
            .timeline-item,
            .timeline-item:nth-child(even) {
                width: 100%;
                margin-left: 0;
                padding-left: 48px;
                padding-right: 0;
                text-align: left;
            }
            .timeline-item .timeline-dot,
            .timeline-item:nth-child(even) .timeline-dot {
                left: 10px;
                right: auto;
            }
            .capability-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-question {
                padding: 18px 20px;
            }
            .faq-answer-inner p {
                padding: 0 20px 20px;
            }
            .timeline-section,
            .capability-section,
            .security-overview,
            .faq-section {
                padding: 64px 0;
            }
            .btn-accent, .btn-outline-light {
                padding: 12px 20px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .footer-links {
                grid-template-columns: 1fr;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-buttons .btn {
                width: 100%;
            }
            .metric-num {
                font-size: 2rem;
            }
            .brand-logo {
                font-size: 1.15rem;
            }
        }

/* roulang page: category2 */
:root {
    --primary: #0F3B34;
    --primary-dark: #0B2522;
    --accent: #C8A86B;
    --accent-hover: #B8955A;
    --bg: #FAF8F3;
    --bg-light: #F4F1EA;
    --text: #1F2A28;
    --text-secondary: #5A6B66;
    --border: #E3DED4;
    --success: #5E9B6E;
    --radius: 14px;
    --radius-sm: 10px;
    --shadow: 0 1px 3px rgba(15,59,52,0.06);
    --shadow-hover: 0 12px 32px rgba(15,59,52,0.12);
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

  a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
  img { max-width: 100%; display: block; }
  button { font-family: inherit; cursor: pointer; }
  h1, h2, h3, h4 { line-height: 1.35; font-weight: 600; }

  .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

  .serif { font-family: "Noto Serif SC", "Songti SC", serif; }

  /* ===== 导航 ===== */
  .header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(11, 37, 34, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: background .3s ease, box-shadow .3s ease;
  }

  .header.scrolled {
    background: rgba(11, 37, 34, 0.96);
    box-shadow: 0 2px 8px rgba(0,0,0,0.24);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
  }

  .brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.28rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.02em;
    white-space: nowrap;
  }

  .brand-logo .dot-badge {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #5E9B6E;
    box-shadow: 0 0 0 3px rgba(94,155,110,0.25);
    display: inline-block;
    flex-shrink: 0;
  }

  .brand-logo .official-tag {
    font-size: 0.7rem;
    font-weight: 500;
    color: #d8d2c2;
    border: 1px solid rgba(255,255,255,0.22);
    border-radius: 999px;
    padding: 2px 10px;
    letter-spacing: 0.06em;
    margin-left: 4px;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .main-nav .nav-link {
    position: relative;
    display: inline-block;
    padding: 8px 18px;
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255,255,255,0.78);
    border-radius: 8px;
    transition: color .25s ease;
  }

  .main-nav .nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 2px;
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width .3s var(--ease);
  }

  .main-nav .nav-link:hover { color: #fff; }
  .main-nav .nav-link:hover::after { width: 24px; }

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

  .main-nav .nav-link.active::after {
    width: 24px;
  }

  .nav-cta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-left: 16px;
  }

  .nav-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    color: #B9C8C3;
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 999px;
    padding: 4px 12px;
    white-space: nowrap;
  }

  .nav-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #5E9B6E;
    box-shadow: 0 0 6px rgba(94,155,110,0.6);
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--accent);
    color: #0B2522;
    font-weight: 600;
    font-size: 0.92rem;
    border: 1px solid var(--accent);
    border-radius: 10px;
    padding: 10px 26px;
    line-height: 1.4;
    transition: background .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease), color .25s ease;
    cursor: pointer;
    white-space: nowrap;
  }

  .btn-primary:hover {
    background: #D5B87C;
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(200,168,107,0.35);
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(200,168,107,0.3);
    background: var(--accent-hover);
  }

  .btn-primary:focus-visible {
    outline: 3px solid rgba(200,168,107,0.4);
    outline-offset: 2px;
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: #fff;
    font-weight: 500;
    font-size: 0.92rem;
    border: 1px solid rgba(255,255,255,0.55);
    border-radius: 10px;
    padding: 10px 26px;
    line-height: 1.4;
    transition: border-color .25s ease, color .25s ease, transform .25s var(--ease), background .25s ease;
    cursor: pointer;
    white-space: nowrap;
  }

  .btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
  }

  .btn-outline:active {
    transform: translateY(0);
    background: rgba(200,168,107,0.1);
  }

  .btn-outline:focus-visible {
    outline: 3px solid rgba(200,168,107,0.35);
    outline-offset: 2px;
  }

  .hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    padding: 8px;
    border-radius: 8px;
  }

  .hamburger span {
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform .3s ease, opacity .3s ease;
  }

  .hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .hamburger.active span:nth-child(2) { opacity: 0; }
  .hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .mobile-menu {
    display: none;
    background: #0B2522;
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 24px 28px;
  }

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

  .mobile-menu .nav-link {
    display: block;
    padding: 14px 0;
    color: rgba(255,255,255,0.85);
    font-size: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }

  .mobile-menu .nav-link.active { color: var(--accent); font-weight: 600; }
  .mobile-menu .btn-primary { width: 100%; margin-top: 20px; }

  /* ===== 分类 Banner ===== */
  .category-hero {
    position: relative;
    background: linear-gradient(135deg, #0B2522 0%, #0F3B34 55%, #123E36 100%);
    padding: 160px 0 90px;
    overflow: hidden;
  }

  .category-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.16;
    pointer-events: none;
  }

  .category-hero::after {
    content: "";
    position: absolute;
    bottom: -60px;
    right: -80px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200,168,107,0.22), transparent 70%);
    pointer-events: none;
  }

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

  .category-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--accent);
    border: 1px solid rgba(200,168,107,0.4);
    border-radius: 999px;
    padding: 5px 16px;
    margin-bottom: 24px;
    background: rgba(200,168,107,0.08);
  }

  .category-hero h1 {
    font-family: "Noto Serif SC", "Songti SC", serif;
    font-size: 2.9rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.3;
    letter-spacing: 0.02em;
    max-width: 640px;
  }

  .category-hero .hero-desc {
    margin-top: 22px;
    font-size: 1.06rem;
    line-height: 1.85;
    color: rgba(255,255,255,0.75);
    max-width: 560px;
  }

  .category-hero .hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 36px;
    flex-wrap: wrap;
  }

  /* ===== 服务能力三列错落卡片 ===== */
  .service-capability {
    padding: 96px 0 56px;
    background: var(--bg);
  }

  .section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent-hover);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 16px;
  }

  .section-label::before {
    content: "";
    width: 22px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
  }

  .section-title {
    font-family: "Noto Serif SC", "Songti SC", serif;
    font-size: 2.1rem;
    font-weight: 600;
    color: #0B2522;
    line-height: 1.35;
  }

  .section-sub {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin-top: 14px;
  }

  .cards-stagger {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: start;
    margin-top: 60px;
  }

  .service-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: box-shadow .3s var(--ease), transform .3s var(--ease);
    display: flex;
    flex-direction: column;
  }

  .service-card:nth-child(1) { margin-top: 0; }
  .service-card:nth-child(2) { margin-top: 44px; }
  .service-card:nth-child(3) { margin-top: 88px; }

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

  .service-card .card-img {
    position: relative;
    height: 200px;
    overflow: hidden;
  }

  .service-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s var(--ease);
  }

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

  .service-card .card-body {
    padding: 30px 28px 32px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .service-card .card-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(200,168,107,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    color: var(--accent-hover);
  }

  .service-card h3 {
    font-size: 1.2rem;
    color: #0B2522;
    margin-bottom: 12px;
    line-height: 1.4;
  }

  .service-card p {
    font-size: 0.94rem;
    color: var(--text-secondary);
    line-height: 1.8;
    flex: 1;
  }

  .service-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    margin-top: 22px;
    transition: color .25s ease, gap .25s ease;
  }

  .service-card .card-link:hover { color: var(--accent-hover); gap: 12px; }

  /* ===== 信任数据条 ===== */
  .trust-bar {
    background: #0B2522;
    padding: 68px 0;
    position: relative;
  }

  .trust-bar .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
  }

  .stat-item {
    text-align: center;
    padding: 20px 12px;
    border-right: 1px solid rgba(255,255,255,0.08);
  }

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

  .stat-item .stat-num {
    font-family: "Noto Serif SC", "Songti SC", serif;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
  }

  .stat-item .stat-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.65);
    margin-top: 8px;
  }

  /* ===== 服务流程 ===== */
  .service-process {
    padding: 96px 0;
    background: var(--bg-light);
  }

  .process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-top: 56px;
    position: relative;
  }

  .process-steps::before {
    content: "";
    position: absolute;
    top: 28px;
    left: 8%;
    right: 8%;
    height: 1px;
    background: rgba(200,168,107,0.35);
  }

  .process-step {
    position: relative;
    text-align: center;
    padding: 0 8px;
  }

  .process-step .step-num {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: #0B2522;
    margin: 0 auto 20px;
    box-shadow: 0 4px 14px rgba(200,168,107,0.2);
  }

  .process-step h4 {
    font-size: 1.06rem;
    color: #0B2522;
    margin-bottom: 10px;
  }

  .process-step p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  /* ===== 保障条 ===== */
  .guarantee-strip {
    background: var(--bg);
    padding: 72px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .guarantee-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
  }

  .guarantee-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 8px 4px;
  }

  .guarantee-item .g-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(200,168,107,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-hover);
    flex-shrink: 0;
    transition: transform .3s var(--ease);
  }

  .guarantee-item:hover .g-icon { transform: rotate(5deg); }

  .guarantee-item .g-text h4 {
    font-size: 0.96rem;
    color: #0B2522;
    margin-bottom: 2px;
  }

  .guarantee-item .g-text p {
    font-size: 0.82rem;
    color: var(--text-secondary);
  }

  /* ===== FAQ ===== */
  .faq-section {
    padding: 96px 0;
    background: var(--bg);
  }

  .faq-inner {
    max-width: 800px;
    margin: 0 auto;
  }

  .faq-item {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
    margin-bottom: 16px;
    overflow: hidden;
    transition: box-shadow .3s var(--ease);
  }

  .faq-item:hover { box-shadow: var(--shadow); }
  .faq-item.active { border-color: rgba(200,168,107,0.5); }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 22px 28px;
    background: transparent;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: #0B2522;
    text-align: left;
    cursor: pointer;
    transition: color .25s ease;
  }

  .faq-question:hover { color: var(--accent-hover); }
  .faq-question:focus-visible { outline: 3px solid rgba(200,168,107,0.35); outline-offset: -2px; border-radius: 12px; }

  .faq-icon {
    position: relative;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
  }

  .faq-icon::before,
  .faq-icon::after {
    content: "";
    position: absolute;
    background: var(--accent-hover);
    border-radius: 2px;
    transition: transform .3s var(--ease);
  }

  .faq-icon::before { width: 16px; height: 2px; top: 9px; left: 2px; }
  .faq-icon::after { width: 2px; height: 16px; top: 2px; left: 9px; }

  .faq-item.active .faq-icon::after { transform: scaleY(0); }

  .faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows .35s var(--ease);
  }

  .faq-item.active .faq-answer { grid-template-rows: 1fr; }

  .faq-answer-inner {
    overflow: hidden;
    padding: 0 28px;
  }

  .faq-item.active .faq-answer-inner { padding-bottom: 24px; }

  .faq-answer-inner p {
    font-size: 0.94rem;
    color: var(--text-secondary);
    line-height: 1.8;
    border-top: 1px solid var(--border);
    padding-top: 16px;
  }

  /* ===== CTA ===== */
  .cta-section {
    background: linear-gradient(120deg, #0B2522, #0F3B34);
    padding: 88px 0;
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: "";
    position: absolute;
    top: -80px;
    right: 10%;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(200,168,107,0.2), transparent 70%);
  }

  .cta-inner {
    position: relative;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
  }

  .cta-inner h2 {
    font-family: "Noto Serif SC", "Songti SC", serif;
    font-size: 2rem;
    color: #fff;
    line-height: 1.4;
  }

  .cta-inner p {
    font-size: 1rem;
    color: rgba(255,255,255,0.7);
    margin-top: 18px;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 18px;
    margin-top: 36px;
    flex-wrap: wrap;
  }

  /* ===== 页脚 ===== */
  .site-footer {
    background: var(--primary-dark);
    padding: 64px 0 32px;
  }

  .footer-top {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .footer-brand .brand-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
  }

  .footer-brand p {
    font-size: 0.9rem;
    color: #9AB3AC;
    margin-top: 12px;
    max-width: 300px;
    line-height: 1.7;
  }

  .footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255,255,255,0.5);
    margin-bottom: 18px;
    letter-spacing: 0.04em;
  }

  .footer-col a {
    display: block;
    font-size: 0.88rem;
    color: #9AB3AC;
    padding: 4px 0;
    transition: color .25s ease;
  }

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

  .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 28px;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
    flex-wrap: wrap;
    gap: 8px;
  }

  .footer-bottom a { color: rgba(255,255,255,0.5); }
  .footer-bottom a:hover { color: var(--accent); }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .cards-stagger { grid-template-columns: 1fr 1fr; }
    .service-card:nth-child(3) { margin-top: 0; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-item:nth-child(2) { border-right: none; }
    .stat-item:nth-child(1), .stat-item:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,0.08); }
    .process-steps { grid-template-columns: 1fr 1fr; gap: 32px; }
    .process-steps::before { display: none; }
    .guarantee-grid { grid-template-columns: 1fr 1fr; }
    .footer-top { grid-template-columns: 1fr; }
  }

  @media (max-width: 767px) {
    .main-nav { display: none; }
    .nav-cta .btn-primary { display: none; }
    .nav-status { display: none; }
    .hamburger { display: flex; }
    .mobile-menu { display: none; }
    .mobile-menu.open { display: block; }
    .header-inner { height: 68px; }
    .category-hero { padding: 120px 0 60px; }
    .category-hero h1 { font-size: 2rem; }
    .cards-stagger { grid-template-columns: 1fr; }
    .service-card:nth-child(2),
    .service-card:nth-child(3) { margin-top: 0; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .process-steps { grid-template-columns: 1fr; }
    .guarantee-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .section-title { font-size: 1.6rem; }
    .btn-primary, .btn-outline { width: 100%; }
    .category-hero .hero-actions { flex-direction: column; }
  }

  @media (max-width: 520px) {
    .container { padding: 0 18px; }
    .brand-logo { font-size: 1.1rem; }
    .brand-logo .official-tag { display: none; }
    .category-hero h1 { font-size: 1.7rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); }
    .stat-item:last-child { border-bottom: none; }
  }