/* roulang page: index */
:root {
      --color-primary: #163A34;
      --color-primary-dark: #0F2B26;
      --color-accent: #C9A96A;
      --color-bg: #FAF9F6;
      --color-card: #FFFFFF;
      --color-text-main: #1F2421;
      --color-text-sub: #6B7280;
      --color-text-mute: #9CA3AF;
      --color-border: #ECE8E1;
      --color-soft: #F3F1EC;
      --radius-sm: 6px;
      --radius-md: 8px;
      --shadow-sm: 0 2px 8px rgba(22, 58, 52, 0.06);
      --shadow-md: 0 8px 24px rgba(22, 58, 52, 0.10);
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-num: "Inter", "DIN Alternate", "Noto Sans SC", monospace;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--color-bg);
      color: var(--color-text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      display: block;
      max-width: 100%;
      height: auto;
    }
    button {
      cursor: pointer;
      font-family: inherit;
    }
    input {
      font-family: inherit;
    }
    .container-site {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section-padding {
      padding-top: 96px;
      padding-bottom: 96px;
    }
    .label-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.04em;
      color: var(--color-accent);
      background: rgba(201, 169, 106, 0.12);
      border: 1px solid rgba(201, 169, 106, 0.25);
      border-radius: 99px;
      padding: 6px 14px;
      text-transform: uppercase;
    }
    .h1-title {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 700;
      letter-spacing: -0.01em;
    }
    .h2-title {
      font-size: 34px;
      line-height: 1.3;
      font-weight: 600;
      letter-spacing: -0.01em;
    }
    .h3-title {
      font-size: 21px;
      line-height: 1.4;
      font-weight: 600;
    }
    .body-text {
      font-size: 16px;
      line-height: 1.8;
      color: var(--color-text-sub);
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 24px;
      background: var(--color-primary);
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      border: 1px solid transparent;
      transition: all 0.2s ease;
      white-space: nowrap;
    }
    .btn-primary:hover {
      background: var(--color-primary-dark);
      transform: translateY(-1px);
      box-shadow: var(--shadow-md);
    }
    .btn-primary:active {
      transform: translateY(0);
    }
    .btn-primary:focus-visible {
      outline: 2px solid rgba(22, 58, 52, 0.4);
      outline-offset: 2px;
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 24px;
      background: transparent;
      color: var(--color-text-main);
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      border: 1px solid #D6D0C6;
      transition: all 0.2s ease;
      white-space: nowrap;
    }
    .btn-secondary:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
    }
    .btn-secondary:focus-visible {
      outline: 2px solid rgba(22, 58, 52, 0.3);
      outline-offset: 2px;
    }
    .nav-link {
      position: relative;
      font-size: 15px;
      color: #4B5563;
      font-weight: 500;
      padding: 8px 2px;
      transition: color 0.2s ease;
    }
    .nav-link:hover {
      color: var(--color-primary);
    }
    .nav-link.active {
      color: var(--color-primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background: var(--color-primary);
      border-radius: 2px;
    }
    .search-box {
      display: flex;
      align-items: center;
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: 999px;
      height: 38px;
      padding: 0 14px;
      transition: all 0.2s ease;
      width: 220px;
    }
    .search-box:focus-within {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 2px rgba(22, 58, 52, 0.1);
      background: #fff;
    }
    .search-box input {
      border: none;
      outline: none;
      background: transparent;
      font-size: 13px;
      color: var(--color-text-main);
      width: 100%;
      margin-left: 8px;
    }
    .search-box input::placeholder {
      color: var(--color-text-mute);
    }
    .hero {
      position: relative;
      overflow: hidden;
      min-height: 560px;
      display: flex;
      align-items: center;
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      z-index: 0;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(22, 58, 52, 0.88) 0%, rgba(22, 58, 52, 0.45) 60%, rgba(22, 58, 52, 0.12) 100%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      padding-top: 88px;
      padding-bottom: 88px;
    }
    .hero-badge {
      display: inline-block;
      background: rgba(201, 169, 106, 0.22);
      color: var(--color-accent);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.04em;
      border: 1px solid rgba(201, 169, 106, 0.35);
      border-radius: 99px;
      padding: 5px 16px;
      margin-bottom: 22px;
    }
    .hero h1 {
      color: #fff;
      max-width: 640px;
      font-size: 46px;
      line-height: 1.22;
      font-weight: 700;
      letter-spacing: -0.01em;
    }
    .hero p {
      color: #D1D5DB;
      font-size: 16px;
      line-height: 1.8;
      max-width: 520px;
      margin-top: 18px;
    }
    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 30px;
      background: #fff;
      color: var(--color-primary);
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
    }
    .btn-hero-primary:hover {
      background: var(--color-accent);
      color: var(--color-primary);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    }
    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 30px;
      background: transparent;
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.55);
      transition: all 0.2s ease;
    }
    .btn-hero-secondary:hover {
      border-color: #fff;
      background: rgba(255, 255, 255, 0.1);
    }
    .feature-card {
      display: block;
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: box-shadow 0.3s ease, transform 0.2s ease;
      box-shadow: var(--shadow-sm);
    }
    .feature-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .feature-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .feature-card .card-body {
      padding: 24px;
    }
    .badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.04em;
      color: var(--color-accent);
      background: rgba(201, 169, 106, 0.12);
      border-radius: 99px;
      padding: 4px 12px;
      white-space: nowrap;
    }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--color-primary);
      font-size: 14px;
      font-weight: 600;
      transition: gap 0.2s ease;
    }
    .text-link:hover {
      gap: 10px;
    }
    .latest-list {
      border-top: 1px solid var(--color-border);
    }
    .latest-item {
      display: flex;
      align-items: center;
      gap: 24px;
      padding: 28px 8px;
      border-bottom: 1px solid var(--color-border);
      transition: background 0.2s ease;
      position: relative;
    }
    .latest-item:hover {
      background: var(--color-soft);
    }
    .latest-item::before {
      content: '';
      position: absolute;
      left: 0;
      top: 12%;
      bottom: 12%;
      width: 2px;
      background: var(--color-primary);
      border-radius: 2px;
      opacity: 0;
      transition: opacity 0.2s ease;
    }
    .latest-item:hover::before {
      opacity: 1;
    }
    .latest-date {
      width: 76px;
      flex-shrink: 0;
      text-align: center;
      border-right: 1px solid var(--color-border);
      padding-right: 20px;
      font-family: var(--font-num);
    }
    .date-day {
      font-size: 32px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1;
      display: block;
      font-family: var(--font-num);
    }
    .date-ym {
      font-size: 12px;
      color: var(--color-text-mute);
      display: block;
      margin-top: 4px;
      font-family: var(--font-num);
    }
    .date-time {
      font-size: 13px;
      color: var(--color-text-sub);
      display: block;
      margin-top: 2px;
      font-family: var(--font-num);
    }
    .latest-content {
      flex: 1;
      min-width: 0;
    }
    .latest-content h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--color-text-main);
      transition: color 0.2s ease;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .latest-item:hover .latest-content h3 {
      color: var(--color-primary);
    }
    .latest-content p {
      font-size: 14px;
      color: var(--color-text-sub);
      margin-top: 4px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .latest-meta {
      flex-shrink: 0;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .latest-meta .arrow {
      font-size: 18px;
      color: var(--color-primary);
      transition: transform 0.2s ease;
    }
    .latest-item:hover .arrow {
      transform: translateX(4px);
    }
    .empty-state {
      text-align: center;
      padding: 48px 24px;
      border-bottom: 1px solid var(--color-border);
    }
    .empty-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border: 2px dashed var(--color-text-mute);
      border-radius: 50%;
      font-size: 20px;
      color: var(--color-text-mute);
      margin-bottom: 12px;
    }
    .empty-state p {
      font-size: 14px;
      color: var(--color-text-mute);
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-num);
      font-size: 48px;
      font-weight: 700;
      color: var(--color-accent);
      line-height: 1.2;
      display: block;
    }
    .stat-label {
      font-size: 14px;
      color: #D1D5DB;
      display: block;
      margin-top: 8px;
      letter-spacing: 0.02em;
    }
    .contact-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: 99px;
      padding: 8px 18px;
      font-size: 14px;
      color: var(--color-text-sub);
      transition: border-color 0.2s ease;
    }
    .contact-chip:hover {
      border-color: var(--color-primary);
    }
    .faq-item {
      border-bottom: 1px solid var(--color-border);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      width: 100%;
      padding: 22px 8px;
      background: transparent;
      border: none;
      text-align: left;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text-main);
      transition: color 0.2s ease;
    }
    .faq-question:hover {
      color: var(--color-primary);
    }
    .faq-icon {
      flex-shrink: 0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--color-soft);
      color: var(--color-primary);
      font-size: 18px;
      font-weight: 500;
      transition: all 0.3s ease;
    }
    .faq-item.active .faq-icon {
      background: var(--color-primary);
      color: #fff;
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }
    .faq-answer-inner {
      padding: 0 8px 22px;
      font-size: 14px;
      line-height: 1.8;
      color: var(--color-text-sub);
    }
    .footer-section {
      background: var(--color-soft);
      border-top: 1px solid var(--color-border);
    }
    .footer-link {
      font-size: 14px;
      color: var(--color-text-sub);
      transition: color 0.2s ease, padding-left 0.2s ease;
      display: inline-block;
      padding: 4px 0;
    }
    .footer-link:hover {
      color: var(--color-primary);
      padding-left: 4px;
    }
    .mobile-menu {
      position: fixed;
      top: 0;
      right: 0;
      width: 280px;
      height: 100vh;
      background: #fff;
      z-index: 100;
      padding: 24px;
      transform: translateX(100%);
      transition: transform 0.3s ease;
      box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
    }
    .mobile-menu.open {
      transform: translateX(0);
    }
    .mobile-nav-link {
      display: block;
      padding: 14px 8px;
      font-size: 16px;
      font-weight: 500;
      color: var(--color-text-main);
      border-bottom: 1px solid var(--color-border);
      transition: color 0.2s ease;
    }
    .mobile-nav-link:hover,
    .mobile-nav-link.active {
      color: var(--color-primary);
    }
    .menu-overlay {
      position: fixed;
      inset: 0;
      background: rgba(31, 36, 33, 0.4);
      z-index: 90;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }
    .menu-overlay.show {
      opacity: 1;
      pointer-events: auto;
    }
    @media (max-width: 1024px) {
      .h1-title {
        font-size: 36px;
      }
      .h2-title {
        font-size: 28px;
      }
      .hero h1 {
        font-size: 36px;
      }
      .section-padding {
        padding-top: 64px;
        padding-bottom: 64px;
      }
    }
    @media (max-width: 768px) {
      .container-site {
        padding-left: 16px;
        padding-right: 16px;
      }
      .h1-title {
        font-size: 30px;
      }
      .h2-title {
        font-size: 26px;
      }
      .hero {
        min-height: 480px;
      }
      .hero h1 {
        font-size: 30px;
      }
      .hero .hero-content {
        padding-top: 64px;
        padding-bottom: 64px;
      }
      .latest-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 20px 8px;
      }
      .latest-date {
        width: auto;
        text-align: left;
        border-right: none;
        padding-right: 0;
        display: flex;
        align-items: baseline;
        gap: 8px;
      }
      .date-day {
        font-size: 24px;
      }
      .date-ym {
        margin-top: 0;
      }
      .date-time {
        margin-top: 0;
      }
      .latest-content h3 {
        white-space: normal;
        font-size: 16px;
      }
      .latest-content p {
        white-space: normal;
      }
      .latest-meta {
        width: 100%;
        justify-content: space-between;
      }
      .stat-number {
        font-size: 36px;
      }
      .section-padding {
        padding-top: 56px;
        padding-bottom: 56px;
      }
    }
    @media (max-width: 520px) {
      .hero h1 {
        font-size: 26px;
      }
      .hero .btn-hero-primary,
      .hero .btn-hero-secondary {
        width: 100%;
      }
      .btn-primary,
      .btn-secondary {
        width: 100%;
      }
    }

/* roulang page: article */
:root {
      --primary: #163A34;
      --primary-hover: #0F2B26;
      --accent: #C9A96A;
      --bg-main: #FAF9F6;
      --bg-muted: #F3F1EC;
      --bg-card: #FFFFFF;
      --text-main: #1F2421;
      --text-sub: #6B7280;
      --text-weak: #9CA3AF;
      --border: #ECE8E1;
      --success: #1B8A5A;
      --error: #D14343;
      --radius: 8px;
      --radius-sm: 6px;
      --shadow-sm: 0 2px 8px rgba(22,58,52,0.06);
      --shadow-md: 0 8px 24px rgba(22,58,52,0.10);
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

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

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

    input {
      font: inherit;
    }

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

    /* ===== Header / Nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border);
    }

    .nav-link {
      position: relative;
      color: #4B5563;
      font-size: 15px;
      font-weight: 500;
      padding: 8px 2px;
      transition: color 0.2s ease;
      display: inline-block;
    }

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

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

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

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 24px;
      border-radius: var(--radius);
      background: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: 500;
      transition: all 0.2s ease;
      cursor: pointer;
      border: none;
      line-height: 1;
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: var(--shadow-md);
    }

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

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 20px;
      border-radius: var(--radius);
      border: 1px solid #D6D0C6;
      background: transparent;
      color: var(--text-main);
      font-size: 14px;
      font-weight: 500;
      transition: all 0.2s ease;
      cursor: pointer;
      line-height: 1;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .search-wrapper {
      position: relative;
    }

    .search-input {
      width: 220px;
      height: 36px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: var(--bg-main);
      padding: 0 16px 0 38px;
      font-size: 13px;
      color: var(--text-main);
      outline: none;
      transition: all 0.2s ease;
    }

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

    .search-input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 2px rgba(22, 58, 52, 0.15);
      background: #fff;
    }

    .search-icon {
      position: absolute;
      left: 13px;
      top: 50%;
      transform: translateY(-50%);
      width: 15px;
      height: 15px;
      color: var(--text-weak);
      pointer-events: none;
    }

    .search-dropdown {
      position: absolute;
      top: calc(100% + 6px);
      left: 0;
      right: 0;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-md);
      padding: 8px;
      z-index: 20;
      display: none;
    }

    .search-dropdown.show {
      display: block;
    }

    .search-dropdown a {
      display: block;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-sub);
      transition: all 0.15s ease;
    }

    .search-dropdown a:hover {
      background: var(--bg-muted);
      color: var(--primary);
    }

    .btn-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      border-radius: var(--radius-sm);
      color: var(--text-sub);
      transition: all 0.2s ease;
    }

    .btn-icon:hover {
      background: var(--bg-muted);
      color: var(--primary);
    }

    /* ===== Mobile Menu ===== */
    .mobile-menu {
      position: fixed;
      top: 0;
      right: -300px;
      width: 280px;
      height: 100vh;
      background: #fff;
      z-index: 100;
      transition: right 0.3s ease;
      padding: 24px;
      box-shadow: -8px 0 32px rgba(0, 0, 0, 0.10);
      display: flex;
      flex-direction: column;
    }

    .mobile-menu.open {
      right: 0;
    }

    .mobile-menu-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.30);
      z-index: 90;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .mobile-menu-overlay.show {
      opacity: 1;
      visibility: visible;
    }

    .mobile-menu-link {
      display: block;
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      transition: all 0.15s ease;
    }

    .mobile-menu-link:hover {
      background: var(--bg-muted);
      color: var(--primary);
    }

    .mobile-menu-link.active {
      background: var(--bg-muted);
      color: var(--primary);
      font-weight: 600;
    }

    /* ===== Breadcrumb ===== */
    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      font-size: 13px;
      color: var(--text-weak);
      padding: 24px 0 0;
      gap: 4px;
    }

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

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

    .breadcrumb-sep {
      margin: 0 8px;
      color: #d1d5db;
    }

    .breadcrumb .current {
      color: var(--text-sub);
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      max-width: 300px;
    }

    /* ===== Article Header ===== */
    .article-hero {
      padding: 48px 0 24px;
      border-bottom: 1px solid var(--border);
    }

    .article-title {
      font-size: 42px;
      font-weight: 700;
      line-height: 1.25;
      color: var(--text-main);
      max-width: 860px;
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }

    .article-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px 24px;
      font-size: 14px;
      color: var(--text-sub);
    }

    .article-meta .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 14px;
      background: var(--bg-muted);
      border-radius: 999px;
      font-size: 13px;
      color: var(--primary);
      font-weight: 500;
    }

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

    .article-meta .meta-item i {
      color: var(--text-weak);
    }

    /* ===== Article Body ===== */
    .article-body {
      padding: 40px 0 72px;
    }

    .container-article {
      max-width: 760px;
      margin: 0 auto;
    }

    .article-content {
      font-size: 16px;
      line-height: 1.9;
      color: var(--text-main);
    }

    .article-content p {
      margin-bottom: 24px;
    }

    .article-content h2 {
      font-size: 24px;
      font-weight: 600;
      margin: 40px 0 16px;
      line-height: 1.4;
      color: var(--primary);
    }

    .article-content h3 {
      font-size: 20px;
      font-weight: 600;
      margin: 32px 0 12px;
      color: var(--text-main);
    }

    .article-content h4 {
      font-size: 18px;
      font-weight: 600;
      margin: 24px 0 10px;
      color: var(--text-main);
    }

    .article-content blockquote {
      border-left: 4px solid var(--accent);
      background: var(--bg-muted);
      padding: 16px 20px;
      margin: 24px 0;
      border-radius: 0 8px 8px 0;
      color: var(--text-sub);
      font-size: 15px;
    }

    .article-content img {
      border-radius: var(--radius);
      max-width: 100%;
      height: auto;
      margin: 24px 0;
    }

    .article-content a {
      color: var(--primary);
      text-decoration: underline;
      text-underline-offset: 4px;
      text-decoration-color: rgba(22, 58, 52, 0.3);
    }

    .article-content ul {
      list-style: disc;
      padding-left: 22px;
      margin: 16px 0 24px;
    }

    .article-content ol {
      list-style: decimal;
      padding-left: 22px;
      margin: 16px 0 24px;
    }

    .article-content li {
      margin-bottom: 6px;
    }

    .article-content table {
      width: 100%;
      border-collapse: collapse;
      margin: 24px 0;
      font-size: 14px;
    }

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

    .article-content table th {
      background: var(--bg-muted);
      font-weight: 600;
      color: var(--text-main);
    }

    .article-content code {
      background: var(--bg-muted);
      padding: 2px 6px;
      border-radius: 4px;
      font-size: 14px;
      font-family: "JetBrains Mono", "Fira Code", monospace;
    }

    .article-content pre {
      background: #1e1e1e;
      color: #e5e7eb;
      padding: 16px 20px;
      border-radius: var(--radius);
      overflow-x: auto;
      margin: 24px 0;
      font-size: 14px;
      line-height: 1.7;
    }

    .article-content pre code {
      background: transparent;
      padding: 0;
      color: inherit;
    }

    /* ===== Not Found ===== */
    .not-found {
      text-align: center;
      padding: 60px 24px;
      background: #fff;
      border-radius: 16px;
      border: 1px solid var(--border);
    }

    .not-found .empty-icon {
      font-size: 48px;
      color: var(--text-weak);
      margin-bottom: 16px;
    }

    .not-found h2 {
      font-size: 20px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .not-found p {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 24px;
    }

    /* ===== Related Section ===== */
    .related-section {
      background: var(--bg-muted);
      padding: 64px 0;
    }

    .section-label {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
      letter-spacing: 0.08em;
      margin-bottom: 8px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 32px;
      font-weight: 600;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .related-card {
      background: #fff;
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: block;
      height: 100%;
    }

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

    .related-card .card-body {
      padding: 24px;
    }

    .related-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

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

    .card-tag {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      background: var(--bg-muted);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 500;
      color: var(--primary);
      letter-spacing: 0.02em;
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
      font-size: 14px;
      font-weight: 500;
      transition: gap 0.2s ease;
    }

    .text-link:hover {
      gap: 10px;
    }

    /* ===== CTA Section ===== */
    .cta-section {
      padding: 80px 0;
      background: var(--bg-main);
    }

    .cta-box {
      background: var(--bg-muted);
      border-radius: 16px;
      padding: 56px 48px;
      text-align: center;
      border: 1px solid var(--border);
    }

    .cta-box h2 {
      font-size: 32px;
      font-weight: 600;
      color: var(--text-main);
      line-height: 1.3;
    }

    .cta-box .cta-desc {
      margin-top: 16px;
      color: var(--text-sub);
      max-width: 520px;
      margin-left: auto;
      margin-right: auto;
      font-size: 15px;
      line-height: 1.7;
    }

    .cta-box .cta-actions {
      margin-top: 32px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 16px;
    }

    .cta-box .cta-aux {
      margin-top: 20px;
      font-size: 13px;
      color: var(--text-weak);
    }

    @media (min-width: 640px) {
      .cta-box .cta-actions {
        flex-direction: row;
      }
    }

    /* ===== Footer ===== */
    .footer-section {
      background: var(--bg-muted);
      border-top: 1px solid var(--border);
    }

    .footer-link {
      font-size: 14px;
      color: var(--text-sub);
      transition: color 0.2s;
      line-height: 2.2;
    }

    .footer-link:hover {
      color: var(--primary);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .container-site {
        padding-left: 20px;
        padding-right: 20px;
      }

      .article-title {
        font-size: 34px;
      }
    }

    @media (max-width: 768px) {
      .article-hero {
        padding: 32px 0 20px;
      }

      .article-title {
        font-size: 28px;
      }

      .article-body {
        padding: 32px 0 56px;
      }

      .related-section {
        padding: 48px 0;
      }

      .cta-box {
        padding: 40px 24px;
      }

      .cta-box h2 {
        font-size: 26px;
      }

      .section-title {
        font-size: 28px;
      }

      .breadcrumb .current {
        max-width: 180px;
      }
    }

    @media (max-width: 520px) {
      .article-title {
        font-size: 24px;
      }

      .article-meta {
        gap: 12px 16px;
        font-size: 13px;
      }

      .article-content {
        font-size: 15px;
      }

      .article-content h2 {
        font-size: 21px;
      }

      .cta-box {
        padding: 32px 20px;
      }

      .cta-box h2 {
        font-size: 22px;
      }
    }

/* roulang page: category1 */
:root {
  --color-primary: #163A34;
  --color-primary-hover: #0F2B26;
  --color-accent: #C9A96A;
  --color-bg: #FAF9F6;
  --color-card: #FFFFFF;
  --color-text: #1F2421;
  --color-text-sub: #6B7280;
  --color-text-weak: #9CA3AF;
  --color-border: #ECE8E1;
  --color-border-light: #E5E0D8;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 8px rgba(22,58,52,0.06);
  --shadow-md: 0 8px 24px rgba(22,58,52,0.10);
  --shadow-lg: 0 16px 40px rgba(22,58,52,0.12);
  --container: 1200px;
  --header-height: 72px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input:focus, button:focus { outline: none; }
.container-site { max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--color-border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); gap: 24px; }
.logo-wrap { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { display: flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 10px; background: var(--color-primary); color: var(--color-accent); font-weight: 700; font-size: 18px; font-family: "Inter","DIN Alternate",sans-serif; }
.logo-text { font-size: 20px; font-weight: 600; color: var(--color-text); white-space: nowrap; }
.nav-link { font-size: 15px; color: #4B5563; padding: 8px 2px; position: relative; transition: color 0.2s; white-space: nowrap; }
.nav-link:hover { color: var(--color-primary); }
.nav-link::after { content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px; background: var(--color-primary); transform: scaleX(0); transition: transform 0.2s; border-radius: 2px; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--color-primary); font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 16px; }
.search-wrap { position: relative; }
.search-input { width: 220px; height: 36px; border-radius: 999px; border: 1px solid var(--color-border); background: #fff; padding: 0 40px 0 38px; font-size: 14px; color: var(--color-text); transition: border-color 0.2s, box-shadow 0.2s; }
.search-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(22,58,52,0.12); }
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 15px; height: 15px; color: var(--color-text-weak); pointer-events: none; }
.search-dropdown { position: absolute; top: calc(100% + 8px); left: 0; width: 280px; background: #fff; border-radius: 10px; box-shadow: var(--shadow-md); border: 1px solid var(--color-border); padding: 12px; opacity: 0; visibility: hidden; transform: translateY(6px); transition: all 0.2s; z-index: 60; }
.search-wrap.active .search-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-title { font-size: 12px; color: var(--color-text-weak); display: block; padding: 4px 8px 8px; }
.dropdown-link { display: block; padding: 8px 10px; border-radius: 6px; font-size: 14px; color: var(--color-text-sub); transition: background 0.2s, color 0.2s; }
.dropdown-link:hover { background: var(--color-bg); color: var(--color-primary); }
.btn-header { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 20px; background: var(--color-primary); color: #fff; border-radius: var(--radius); font-size: 14px; font-weight: 500; transition: background 0.2s, transform 0.2s; white-space: nowrap; }
.btn-header:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-header:active { transform: translateY(0); }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 24px; background: var(--color-primary); color: #fff; border-radius: var(--radius); font-size: 15px; font-weight: 500; transition: background 0.2s, transform 0.2s; border: none; cursor: pointer; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 24px; background: transparent; color: var(--color-primary); border: 1px solid #D6D0C6; border-radius: var(--radius); font-size: 15px; font-weight: 500; transition: all 0.2s; cursor: pointer; }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-white { display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 30px; background: #fff; color: var(--color-primary); border-radius: var(--radius); font-size: 15px; font-weight: 600; transition: all 0.2s; box-shadow: 0 2px 8px rgba(0,0,0,0.08); cursor: pointer; }
.btn-white:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
.btn-white-outline { display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 30px; background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.55); border-radius: var(--radius); font-size: 15px; font-weight: 500; transition: all 0.2s; cursor: pointer; }
.btn-white-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.menu-toggle { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid var(--color-border); border-radius: 8px; background: #fff; cursor: pointer; color: var(--color-text); }

/* Mobile drawer */
.mobile-drawer { position: fixed; top: 0; right: -300px; width: 280px; height: 100vh; background: #fff; z-index: 100; transition: right 0.3s ease; padding: 24px; box-shadow: -8px 0 30px rgba(0,0,0,0.08); }
.mobile-drawer.open { right: 0; }
.mobile-drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.drawer-close { width: 32px; height: 32px; border-radius: 6px; border: 1px solid var(--color-border); background: #fff; font-size: 20px; cursor: pointer; color: var(--color-text-sub); }
.mobile-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav-link { display: block; padding: 12px 14px; border-radius: 8px; font-size: 15px; color: var(--color-text); transition: background 0.2s; }
.mobile-nav-link:hover { background: var(--color-bg); }
.mobile-nav-link.active { background: var(--color-bg); color: var(--color-primary); font-weight: 600; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(22,58,52,0.4); z-index: 90; opacity: 0; visibility: hidden; transition: opacity 0.3s; }
.drawer-overlay.show { opacity: 1; visibility: visible; }

/* Page Hero */
.page-hero { background-image: linear-gradient(100deg, rgba(22,58,52,0.92) 0%, rgba(22,58,52,0.68) 50%, rgba(22,58,52,0.35) 100%), url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; padding: 92px 0; color: #fff; position: relative; }
.page-category-label { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.30); color: rgba(255,255,255,0.80); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; background: rgba(255,255,255,0.06); }

/* Section */
.section-padding { padding: 96px 0; }
.section-tag { display: inline-block; font-size: 13px; letter-spacing: 0.04em; color: var(--color-accent); font-weight: 600; text-transform: uppercase; padding: 6px 14px; border-radius: 999px; background: rgba(201,169,106,0.12); }
.section-title { font-size: 36px; font-weight: 600; line-height: 1.3; color: var(--color-text); margin-top: 16px; }
.section-sub { font-size: 16px; color: var(--color-text-sub); margin-top: 12px; line-height: 1.7; }

/* Service Card */
.service-card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow 0.25s, transform 0.25s; height: 100%; }
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.service-card-img { width: 100%; height: 200px; object-fit: cover; }
.service-card-body { padding: 24px; }
.card-tag { font-size: 13px; color: var(--color-accent); font-weight: 600; letter-spacing: 0.02em; }

/* Process */
.process-section { background: #fff; padding: 96px 0; }
.timeline { position: relative; }
.timeline::before { content: ''; position: absolute; left: 11px; top: 8px; bottom: 8px; width: 2px; background: var(--color-border); }
.timeline-item { position: relative; padding: 0 0 44px 48px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; left: 0; top: 4px; width: 24px; height: 24px; border-radius: 50%; background: #fff; border: 5px solid var(--color-primary); box-shadow: 0 2px 6px rgba(22,58,52,0.15); }
.timeline-num { font-family: "Inter","DIN Alternate",sans-serif; font-weight: 700; font-size: 14px; color: var(--color-accent); margin-bottom: 4px; display: block; letter-spacing: 0.04em; }
.timeline-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; color: var(--color-text); }
.timeline-desc { font-size: 15px; color: var(--color-text-sub); line-height: 1.8; }
.summary-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 12px; padding: 32px; }
.summary-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.summary-item { display: flex; align-items: flex-start; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--color-border); }
.summary-item:last-child { border-bottom: none; }
.summary-icon { width: 36px; height: 36px; border-radius: 8px; background: rgba(22,58,52,0.08); display: flex; align-items: center; justify-content: center; color: var(--color-primary); flex-shrink: 0; }
.summary-label { font-size: 13px; color: var(--color-text-weak); }
.summary-value { font-size: 15px; font-weight: 500; color: var(--color-text); }

/* Scenarios */
.scenario-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.scenario-block.reverse .scenario-img-wrap { order: 2; }
.scenario-img-wrap { position: relative; }
.scenario-img { border-radius: 12px; box-shadow: var(--shadow-md); width: 100%; height: 320px; object-fit: cover; }
.scenario-label { font-size: 13px; color: var(--color-accent); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.scenario-title { font-size: 28px; font-weight: 600; margin-top: 10px; line-height: 1.3; color: var(--color-text); }
.scenario-desc { font-size: 16px; color: var(--color-text-sub); margin-top: 16px; line-height: 1.8; }
.scenario-points { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.scenario-point { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--color-text-sub); }
.scenario-point svg { width: 18px; height: 18px; color: var(--color-primary); flex-shrink: 0; margin-top: 3px; }

/* Stats */
.stats-section { background: var(--color-primary); padding: 80px 0; color: #fff; }
.stats-number { font-family: "Inter","DIN Alternate",sans-serif; font-size: 52px; font-weight: 700; color: var(--color-accent); line-height: 1.2; }
.stats-label { font-size: 15px; color: #D1D5DB; margin-top: 8px; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-toggle { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 20px 0; background: transparent; border: none; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--color-text); text-align: left; transition: color 0.2s; }
.faq-toggle:hover { color: var(--color-primary); }
.faq-icon { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center; color: var(--color-primary); font-size: 18px; transition: transform 0.3s, background 0.3s; flex-shrink: 0; }
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer-inner { padding: 0 0 24px; font-size: 15px; color: var(--color-text-sub); line-height: 1.8; }

/* CTA */
.cta-section { background: var(--color-bg); border-top: 1px solid var(--color-border); padding: 80px 0; text-align: center; }
.cta-box { background: #fff; border-radius: 16px; padding: 56px 32px; box-shadow: var(--shadow-sm); max-width: 720px; margin: 0 auto; border: 1px solid var(--color-border); }
.cta-title { font-size: 32px; font-weight: 600; line-height: 1.3; color: var(--color-text); }
.cta-desc { font-size: 16px; color: var(--color-text-sub); margin-top: 12px; line-height: 1.8; }
.cta-meta { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 20px; font-size: 14px; color: var(--color-text-weak); flex-wrap: wrap; }

/* Footer */
.footer-section { background: #F3F1EC; padding-top: 56px; border-top: 1px solid var(--color-border-light); }
.footer-link { font-size: 14px; color: var(--color-text-sub); transition: color 0.2s; line-height: 2; }
.footer-link:hover { color: var(--color-primary); }
.footer-bottom { border-top: 1px solid var(--color-border-light); padding: 20px 0; margin-top: 40px; font-size: 13px; color: var(--color-text-weak); }

/* Responsive */
@media (max-width: 1024px) {
  .page-hero { padding: 64px 0; }
  .section-padding { padding: 64px 0; }
  .process-section { padding: 64px 0; }
  .scenario-block { grid-template-columns: 1fr; gap: 32px; }
  .scenario-block.reverse .scenario-img-wrap { order: 0; }
  .section-title { font-size: 30px; }
}
@media (max-width: 768px) {
  .header-inner { gap: 12px; }
  .container-site { padding-left: 20px; padding-right: 20px; }
  .section-padding { padding: 56px 0; }
  .process-section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .page-hero { padding: 56px 0; }
  .stats-number { font-size: 40px; }
  .cta-title { font-size: 26px; }
  .cta-box { padding: 40px 20px; }
}
@media (max-width: 520px) {
  .header-actions .btn-header { display: none; }
  .search-input { width: 160px; }
  .scenario-img { height: 220px; }
  .service-card-img { height: 160px; }
}

/* roulang page: category2 */
:root {
            --primary: #163A34;
            --primary-hover: #0F2B26;
            --accent: #C9A96A;
            --accent-hover: #B89450;
            --bg-base: #FAF9F6;
            --bg-card: #FFFFFF;
            --text-main: #1F2421;
            --text-sub: #6B7280;
            --text-weak: #9CA3AF;
            --border: #ECE8E1;
            --border-strong: #D6D0C6;
            --success: #1B8A5A;
            --danger: #D14343;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(22, 58, 52, 0.06);
            --shadow-md: 0 8px 24px rgba(22, 58, 52, 0.10);
            --container: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg-base);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container-site {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width:768px) {
            .container-site {
                padding-left: 18px;
                padding-right: 18px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
        }
        .nav-link {
            font-size: 15px;
            color: #4B5563;
            padding: 6px 2px;
            margin: 0 8px;
            position: relative;
            font-weight: 500;
            white-space: nowrap;
            transition: color .2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .search-input {
            width: 220px;
            height: 36px;
            border-radius: 999px;
            border: 1px solid var(--border-strong);
            background: #fff;
            padding: 0 36px 0 38px;
            font-size: 14px;
            color: var(--text-main);
            transition: border-color .2s, box-shadow .2s;
        }
        .search-input::placeholder {
            color: var(--text-weak);
        }
        .search-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(22, 58, 52, 0.12);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            box-shadow: 0 0 0 3px rgba(22, 58, 52, 0.25);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            background: transparent;
            border: 1px solid var(--border-strong);
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: border-color .2s, color .2s, transform .2s;
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 30px;
            border-radius: var(--radius-md);
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: transform .2s, box-shadow .2s;
            white-space: nowrap;
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
        }
        .btn-white-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 30px;
            border-radius: var(--radius-md);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background .2s, border-color .2s;
            white-space: nowrap;
        }
        .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
        }

        /* ===== Badge ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(201, 169, 106, 0.12);
            border: 1px solid rgba(201, 169, 106, 0.30);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(90deg, rgba(22, 58, 52, 0.88) 0%, rgba(22, 58, 52, 0.60) 55%, rgba(22, 58, 52, 0.38) 100%), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            padding: 90px 0;
            color: #fff;
            position: relative;
        }
        .page-hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.25;
            margin: 18px 0 14px;
            letter-spacing: 0.01em;
        }
        .page-hero .hero-sub {
            font-size: 16px;
            color: #D1D5DB;
            line-height: 1.8;
            max-width: 600px;
        }
        .page-hero .hero-decor {
            width: 40px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
            margin-bottom: 18px;
        }
        @media (max-width:768px) {
            .page-hero {
                padding: 60px 0;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
            }
        }

        /* ===== Cards ===== */
        .hover-lift {
            transition: transform .25s ease, box-shadow .25s ease;
        }
        .hover-lift:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .card-surface {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(236, 232, 225, 0.6);
        }

        /* ===== Timeline ===== */
        .timeline-list {
            position: relative;
            padding-left: 36px;
            list-style: none;
            margin: 0;
        }
        .timeline-list::before {
            content: '';
            position: absolute;
            left: 9px;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary) 0%, var(--accent) 100%);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding: 20px 24px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(236, 232, 225, 0.7);
            margin-bottom: 20px;
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .timeline-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -30px;
            top: 28px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px rgba(22, 58, 52, 0.18);
        }
        .timeline-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 6px;
            color: var(--text-main);
        }
        .timeline-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== Capability Card ===== */
        .capability-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid rgba(236, 232, 225, 0.8);
            box-shadow: var(--shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease;
            height: 100%;
        }
        .capability-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .capability-card .cap-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(22, 58, 52, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .capability-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text-main);
        }
        .capability-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== Scene Item ===== */
        .scene-item {
            display: flex;
            flex-direction: column;
            gap: 10px;
            padding: 26px 24px;
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent);
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: transform .25s, box-shadow .25s;
        }
        .scene-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .scene-item .scene-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(201, 169, 106, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }
        .scene-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0;
        }
        .scene-item p {
            font-size: 13.5px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Step Card ===== */
        .step-card {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-md);
            background: #fff;
            border: 1px solid rgba(236, 232, 225, 0.8);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: transform .25s, box-shadow .25s;
            height: 100%;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-family: "Inter", "DIN Alternate", sans-serif;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 8px;
        }
        .step-card p {
            font-size: 13.5px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .25s;
        }
        .faq-item.open {
            box-shadow: var(--shadow-sm);
            border-color: rgba(22, 58, 52, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            user-select: none;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(22, 58, 52, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 400;
            transition: transform .3s ease, background .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: #F3F1EC;
            border-radius: 16px;
            padding: 60px 40px;
            text-align: center;
        }
        @media (max-width:768px) {
            .cta-section {
                padding: 40px 20px;
                border-radius: 12px;
            }
        }

        /* ===== Footer ===== */
        .footer-section {
            background: #F3F1EC;
            border-top: 1px solid #E5E0D8;
            margin-top: 80px;
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 2.4;
            transition: color .2s;
        }
        .footer-link:hover {
            color: var(--primary);
        }

        /* ===== Mobile Drawer ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: #fff;
            z-index: 100;
            box-shadow: -8px 0 30px rgba(0, 0, 0, 0.08);
            transition: right .3s ease;
            padding: 24px;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-mask {
            position: fixed;
            inset: 0;
            background: rgba(22, 58, 52, 0.4);
            z-index: 90;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
        }
        .drawer-mask.open {
            opacity: 1;
            visibility: visible;
        }
        .drawer-link {
            display: block;
            padding: 14px 4px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            border-bottom: 1px solid var(--border);
            transition: color .2s;
        }
        .drawer-link:hover {
            color: var(--primary);
        }
        .drawer-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* search dropdown */
        .search-box {
            position: relative;
        }
        .search-suggest {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            right: 0;
            background: #fff;
            border-radius: 10px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            padding: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: all .2s ease;
            z-index: 20;
        }
        .search-box:focus-within .search-suggest {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .search-suggest a {
            display: block;
            padding: 8px 12px;
            font-size: 14px;
            color: var(--text-sub);
            border-radius: 6px;
            transition: background .2s, color .2s;
        }
        .search-suggest a:hover {
            background: rgba(22, 58, 52, 0.06);
            color: var(--primary);
        }

        /* section spacing */
        .section-pad {
            padding: 96px 0;
        }
        @media (max-width:768px) {
            .section-pad {
                padding: 56px 0;
            }
        }

        .section-label {
            font-size: 13px;
            letter-spacing: 0.04em;
            color: var(--accent-hover);
            font-weight: 600;
            margin-bottom: 10px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .section-label::before {
            content: '';
            display: inline-block;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 600;
            line-height: 1.3;
            margin: 0 0 16px;
            color: var(--text-main);
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 660px;
        }
        @media (max-width:768px) {
            .section-title {
                font-size: 26px;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #163A34;
    --primary-dark: #0F2B26;
    --accent: #C9A96A;
    --bg-warm: #FAF9F6;
    --text-main: #1F2421;
    --text-sub: #6B7280;
    --text-weak: #9CA3AF;
    --line-soft: #ECE8E1;
    --shadow-sm: 0 2px 8px rgba(22,58,52,0.06);
    --shadow-md: 0 8px 24px rgba(22,58,52,0.10);
    --radius-md: 8px;
    --radius-sm: 6px;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-warm);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
  img { max-width: 100%; height: auto; display: block; }
  button { font-family: inherit; cursor: pointer; border: none; background: none; }
  input { font-family: inherit; }

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

  /* Header / Nav */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line-soft);
  }
  .nav-link {
    font-size: 15px; color: #4B5563; font-weight: 500;
    padding: 6px 2px; position: relative; transition: color 0.2s ease;
  }
  .nav-link:hover { color: var(--primary); }
  .nav-link.active { color: var(--primary); font-weight: 600; }
  .nav-link.active::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
    background: var(--primary); border-radius: 2px;
  }

  .search-box {
    height: 36px; border-radius: 999px; border: 1px solid #D6D0C6;
    background: #fff; padding: 0 14px; display: flex; align-items: center; gap: 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
  }
  .search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(22,58,52,0.12);
  }
  .search-box input { border: none; outline: none; background: transparent; font-size: 14px; color: var(--text-main); width: 100%; }

  .btn-primary {
    display: inline-flex; align-items: center; justify-content: center;
    height: 44px; padding: 0 24px; border-radius: 8px;
    background: var(--primary); color: #fff; font-size: 15px; font-weight: 600;
    transition: background 0.2s ease, transform 0.2s ease;
  }
  .btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
  .btn-primary:active { transform: translateY(0); }

  .btn-outline {
    display: inline-flex; align-items: center; justify-content: center;
    height: 44px; padding: 0 24px; border-radius: 8px;
    background: transparent; color: var(--text-main); border: 1px solid #D6D0C6;
    font-size: 15px; font-weight: 500; transition: all 0.2s ease;
  }
  .btn-outline:hover { border-color: var(--primary); color: var(--primary); }

  .btn-light {
    display: inline-flex; align-items: center; justify-content: center;
    height: 44px; padding: 0 24px; border-radius: 8px;
    background: #fff; color: var(--primary); font-size: 15px; font-weight: 600;
    transition: background 0.2s ease, transform 0.2s ease;
  }
  .btn-light:hover { background: #f0efec; transform: translateY(-1px); }

  .btn-ghost-light {
    display: inline-flex; align-items: center; justify-content: center;
    height: 44px; padding: 0 24px; border-radius: 8px;
    background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.6);
    font-size: 15px; font-weight: 500; transition: all 0.2s ease;
  }
  .btn-ghost-light:hover { border-color: #fff; background: rgba(255,255,255,0.10); }

  .text-link {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--primary); font-size: 14px; font-weight: 600;
    transition: gap 0.2s ease;
  }
  .text-link:hover { gap: 10px; }

  /* Hero */
  .hero-section {
    position: relative;
    background-image: linear-gradient(90deg, rgba(22,58,52,0.88) 0%, rgba(22,58,52,0.45) 60%, rgba(22,58,52,0.10) 100%), url('/assets/images/backpic/back-3.webp');
    background-size: cover; background-position: center;
    padding: 96px 0;
  }

  /* Card */
  .feature-card {
    background: #fff; border: 1px solid var(--line-soft); border-radius: 8px;
    padding: 28px; transition: box-shadow 0.25s ease, transform 0.25s ease;
    height: 100%;
  }
  .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
  .feature-icon {
    width: 46px; height: 46px; border-radius: 8px;
    background: rgba(22,58,52,0.06); display: flex; align-items: center; justify-content: center;
    color: var(--primary);
  }

  /* Timeline */
  .process-section { background: #fff; }
  .timeline-list { position: relative; padding-left: 0; }
  .timeline-item { display: flex; gap: 32px; position: relative; padding-bottom: 40px; }
  .timeline-item:last-child { padding-bottom: 0; }
  .timeline-item::before {
    content: ''; position: absolute; left: 24px; top: 56px; bottom: 0; width: 1px;
    background: var(--line-soft);
  }
  .timeline-item:last-child::before { display: none; }
  .timeline-index {
    width: 48px; height: 48px; border-radius: 50%; flex-shrink: 0;
    background: var(--primary); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; font-weight: 700; font-family: "Inter", sans-serif;
    position: relative; z-index: 1;
  }

  /* Scenario image card */
  .scenario-card {
    background: #fff; border-radius: 8px; overflow: hidden;
    border: 1px solid var(--line-soft);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
  }
  .scenario-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
  .scenario-img { aspect-ratio: 16/9; width: 100%; object-fit: cover; }

  /* Data band */
  .data-band {
    background: var(--primary);
    color: #fff; padding: 72px 0;
  }
  .data-number {
    font-family: "Inter", "DIN Alternate", sans-serif;
    font-size: 48px; font-weight: 700; color: var(--accent);
    line-height: 1.2;
  }

  /* FAQ */
  .faq-item { border-bottom: 1px solid var(--line-soft); }
  .faq-question { width: 100%; text-align: left; padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-size: 16px; font-weight: 600; color: var(--text-main); transition: color 0.2s; }
  .faq-question:hover { color: var(--primary); }
  .faq-question .icon { font-size: 22px; color: var(--text-weak); transition: transform 0.3s ease, color 0.3s ease; }
  .faq-item.active .faq-question .icon { transform: rotate(45deg); color: var(--primary); }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
  .faq-answer-inner { padding-bottom: 20px; font-size: 14px; color: var(--text-sub); line-height: 1.8; padding-right: 40px; }

  /* CTA */
  .cta-section { background: #fff; }

  /* Footer */
  .footer-section { background: #F3F1EC; }
  .footer-link { font-size: 14px; color: var(--text-sub); transition: color 0.2s; }
  .footer-link:hover { color: var(--primary); }

  /* Search dropdown */
  .search-dropdown {
    position: absolute; top: calc(100% + 8px); right: 0; left: 0;
    background: #fff; border: 1px solid var(--line-soft); border-radius: 8px;
    box-shadow: var(--shadow-md); padding: 10px 0; z-index: 60;
  }
  .search-suggest { display: block; padding: 8px 16px; font-size: 14px; color: var(--text-main); cursor: pointer; }
  .search-suggest:hover { background: var(--bg-warm); color: var(--primary); }

  /* Mobile drawer */
  .mobile-drawer {
    position: fixed; top: 0; right: -280px; width: 280px; height: 100%;
    background: #fff; z-index: 100; transition: right 0.3s ease;
    box-shadow: -8px 0 32px rgba(0,0,0,0.08);
    padding: 24px; display: flex; flex-direction: column; gap: 8px;
  }
  .mobile-drawer.open { right: 0; }
  .drawer-backdrop { position: fixed; inset: 0; background: rgba(15,20,18,0.45); z-index: 90; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
  .drawer-backdrop.show { opacity: 1; pointer-events: auto; }

  /* Responsive */
  @media (max-width: 1024px) {
    .hero-section { padding: 72px 0; }
    .data-number { font-size: 38px; }
  }
  @media (max-width: 768px) {
    .hero-section { padding: 56px 0; }
    .site-header .desktop-nav { display: none; }
    .mobile-menu-btn { display: inline-flex; }
    .hero-title { font-size: 34px !important; line-height: 1.3 !important; }
    .data-number { font-size: 32px; }
    .timeline-item { gap: 16px; }
    .timeline-item::before { left: 19px; }
    .timeline-index { width: 38px; height: 38px; font-size: 14px; }
  }
  @media (min-width: 769px) {
    .mobile-menu-btn { display: none; }
  }
  @media (max-width: 520px) {
    .hero-section { padding: 40px 0; }
    .btn-light, .btn-ghost-light { width: 100%; }
    .hero-actions { flex-direction: column; gap: 12px !important; }
    .container-site { padding-left: 20px; padding-right: 20px; }
  }