/* roulang page: index */
/* ===== Design Tokens ===== */
    :root {
      --color-primary: #1F4A38;
      --color-primary-dark: #17362A;
      --color-primary-light: #EAF0EC;
      --color-accent: #C2A16F;
      --color-accent-light: #F2EBDF;
      --color-bg: #F7F4EF;
      --color-text: #211C17;
      --color-text-light: #6D6A63;
      --color-border: #E4DED3;
      --color-dark: #101714;
      --radius: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(16,23,20,0.08);
      --shadow-lg: 0 12px 32px rgba(16,23,20,0.12);
      --transition: all 0.25s ease;
    }

    /* ===== Reset & Base ===== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      background-color: var(--color-bg);
      color: var(--color-text);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button, input, textarea {
      font-family: inherit;
      font-size: inherit;
      border: none;
      outline: none;
    }
    ul {
      list-style: none;
    }

    /* ===== Container ===== */
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ===== Section ===== */
    .section {
      padding: 96px 0;
    }
    .section-head {
      max-width: 680px;
      margin-bottom: 56px;
    }
    .section-head .eyebrow,
    .eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--color-accent);
      margin-bottom: 12px;
    }
    .section-head h2 {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: 0.02em;
      margin-bottom: 16px;
    }
    .section-head p {
      font-size: 16px;
      color: var(--color-text-light);
      line-height: 1.8;
    }

    /* ===== Header ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 50;
      height: 64px;
      background: rgba(247, 244, 239, 0.85);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--color-border);
      transition: var(--transition);
    }
    .site-header.scrolled {
      background: #ffffff;
      box-shadow: 0 4px 20px rgba(16,23,20,0.06);
    }
    .header-inner {
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      font-size: 26px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--color-primary);
      display: flex;
      align-items: center;
      gap: 2px;
    }
    .logo span {
      color: var(--color-accent);
    }
    .main-nav ul {
      display: flex;
      align-items: center;
      gap: 36px;
    }
    .main-nav a {
      font-size: 15px;
      font-weight: 500;
      color: var(--color-text);
      position: relative;
      padding: 6px 2px;
      transition: var(--transition);
    }
    .main-nav a:hover {
      color: var(--color-primary);
    }
    .main-nav a.active {
      color: var(--color-primary);
      font-weight: 600;
    }
    .main-nav a.active::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 100%;
      height: 2px;
      background: var(--color-accent);
      border-radius: 2px;
    }
    .header-cta {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      font-size: 20px;
      color: var(--color-primary);
      cursor: pointer;
      width: 40px;
      height: 40px;
      border-radius: 8px;
      border: 1px solid var(--color-border);
    }
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: #ffffff;
      border-bottom: 1px solid var(--color-border);
      box-shadow: 0 12px 30px rgba(16,23,20,0.1);
      z-index: 49;
      padding: 20px 24px 28px;
    }
    .mobile-drawer.open {
      display: block;
    }
    .mobile-drawer ul {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .mobile-drawer a {
      display: block;
      padding: 12px 4px;
      font-size: 16px;
      font-weight: 500;
      color: var(--color-text);
      border-bottom: 1px solid var(--color-border);
    }
    .mobile-drawer a.active {
      color: var(--color-primary);
    }
    .mobile-drawer a:last-child {
      border-bottom: none;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 44px;
      padding: 0 24px;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--color-primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--color-primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(31,74,56,0.25);
    }
    .btn-outline {
      background: transparent;
      color: var(--color-text);
      border: 1px solid var(--color-accent);
    }
    .btn-outline:hover {
      background: var(--color-accent-light);
      color: var(--color-primary-dark);
    }
    .btn-small {
      height: 38px;
      padding: 0 18px;
      font-size: 14px;
    }
    .btn-block {
      width: 100%;
    }
    .btn:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      min-height: 92vh;
      display: flex;
      align-items: center;
      padding: 140px 0 80px;
      background-size: cover;
      background-position: center;
      background-color: var(--color-dark);
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(16,23,20,0.92) 0%, rgba(16,23,20,0.72) 55%, rgba(16,23,20,0.45) 100%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 60px;
      align-items: center;
    }
    .hero-text .eyebrow {
      color: var(--color-accent);
    }
    .hero-text h1 {
      font-size: 46px;
      line-height: 1.25;
      font-weight: 800;
      color: #fff;
      letter-spacing: 0.02em;
      margin: 16px 0 24px;
    }
    .hero-text p {
      font-size: 17px;
      line-height: 1.8;
      color: rgba(255,255,255,0.85);
      max-width: 520px;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .hero-metrics {
      display: flex;
      flex-direction: column;
      gap: 20px;
      padding: 28px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(6px);
    }
    .hero-metric {
      display: flex;
      align-items: center;
      gap: 16px;
      color: #fff;
      padding-bottom: 18px;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .hero-metric:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .hero-metric i {
      font-size: 22px;
      color: var(--color-accent);
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: rgba(194,161,111,0.12);
      border: 1px solid rgba(194,161,111,0.3);
      flex-shrink: 0;
    }
    .hero-metric strong {
      font-size: 16px;
      font-weight: 600;
      display: block;
    }
    .hero-metric span {
      font-size: 14px;
      color: rgba(255,255,255,0.7);
    }

    /* ===== Services ===== */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius);
      padding: 32px 28px;
      transition: var(--transition);
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(194,161,111,0.4);
    }
    .service-card .icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--color-primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 22px;
      border: 1px solid rgba(31,74,56,0.08);
      transition: var(--transition);
    }
    .service-card:hover .icon-wrap {
      background: var(--color-accent-light);
      border-color: var(--color-accent);
    }
    .service-card .icon-wrap i {
      font-size: 20px;
      color: var(--color-primary);
    }
    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .service-card p {
      font-size: 15px;
      color: var(--color-text-light);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .service-card a {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
    }
    .service-card a:hover {
      color: var(--color-accent);
      gap: 10px;
    }

    /* ===== Stats ===== */
    .stats-section {
      background: var(--color-dark);
      background-image: linear-gradient(135deg, #101714 0%, #1F4A38 100%);
      padding: 84px 0;
      position: relative;
      overflow: hidden;
    }
    .stats-section::after {
      content: "";
      position: absolute;
      right: -120px;
      top: -120px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(194,161,111,0.15) 0%, transparent 70%);
      border-radius: 50%;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 40px;
    }
    .stat-item {
      text-align: center;
      color: #fff;
      position: relative;
      z-index: 2;
    }
    .stat-number {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.2;
      color: #fff;
    }
    .stat-suffix {
      font-size: 28px;
      font-weight: 700;
      color: var(--color-accent);
      margin-left: 2px;
    }
    .stat-item p {
      margin-top: 10px;
      font-size: 15px;
      color: rgba(255,255,255,0.75);
      letter-spacing: 0.04em;
    }
    .stat-divider {
      width: 1px;
      height: 56px;
      background: rgba(255,255,255,0.12);
    }

    /* ===== Cases ===== */
    .cases-grid {
      display: grid;
      grid-template-columns: 1.25fr 1fr 1fr;
      grid-template-rows: auto auto;
      gap: 24px;
    }
    .case-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--color-border);
      display: block;
      min-height: 280px;
      transition: var(--transition);
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .case-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      position: absolute;
      inset: 0;
    }
    .case-large {
      grid-row: span 2;
      min-height: 576px;
    }
    .case-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 45%, rgba(16,23,20,0.82) 100%);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 28px;
      transition: var(--transition);
    }
    .case-card:hover .case-overlay {
      background: linear-gradient(180deg, rgba(16,23,20,0.15) 0%, rgba(16,23,20,0.85) 100%);
    }
    .case-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--color-accent);
      background: rgba(16,23,20,0.6);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 10px;
      width: fit-content;
      letter-spacing: 0.06em;
    }
    .case-overlay h3 {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }
    .case-overlay p {
      font-size: 14px;
      color: rgba(255,255,255,0.8);
      margin-bottom: 14px;
    }
    .case-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-accent);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      opacity: 0;
      transform: translateX(-8px);
      transition: var(--transition);
    }
    .case-card:hover .case-link {
      opacity: 1;
      transform: translateX(0);
    }
    .section-footer-link {
      text-align: center;
      margin-top: 48px;
    }
    .section-footer-link a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-primary);
      border-bottom: 2px solid var(--color-accent);
      padding-bottom: 4px;
      transition: var(--transition);
    }
    .section-footer-link a:hover {
      color: var(--color-accent);
      gap: 12px;
    }

    /* ===== Solution ===== */
    .solution-section {
      background: #fff;
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
    }
    .solution-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      position: relative;
      margin: 56px 0 40px;
    }
    .solution-steps::before {
      content: "";
      position: absolute;
      top: 30px;
      left: 10%;
      right: 10%;
      height: 1px;
      background: var(--color-border);
      z-index: 0;
    }
    .step {
      position: relative;
      z-index: 1;
      padding: 0 28px;
      text-align: left;
    }
    .step-num {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: #fff;
      border: 2px solid var(--color-accent);
      color: var(--color-primary);
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 20px;
      box-shadow: 0 4px 12px rgba(194,161,111,0.2);
    }
    .step h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .step p {
      font-size: 15px;
      color: var(--color-text-light);
      line-height: 1.7;
    }
    .solution-cta {
      text-align: center;
      margin-top: 16px;
    }

    /* ===== News List ===== */
    .news-section {
      background: var(--color-bg);
    }
    .news-list {
      max-width: 900px;
    }
    .news-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      padding: 26px 8px;
      border-bottom: 1px solid var(--color-border);
      transition: var(--transition);
    }
    .news-item:first-child {
      border-top: 1px solid var(--color-border);
    }
    .news-item:hover {
      background: rgba(234,240,236,0.4);
      padding-left: 16px;
      padding-right: 16px;
    }
    .news-cat {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--color-accent);
      background: var(--color-accent-light);
      padding: 4px 12px;
      border-radius: 20px;
      letter-spacing: 0.04em;
      margin-bottom: 8px;
    }
    .news-item h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--color-text);
      margin-bottom: 6px;
      transition: var(--transition);
    }
    .news-item:hover h3 {
      color: var(--color-primary);
    }
    .news-item p {
      font-size: 14px;
      color: var(--color-text-light);
      line-height: 1.7;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .news-meta {
      text-align: right;
      flex-shrink: 0;
    }
    .news-date {
      display: block;
      font-size: 13px;
      color: var(--color-text-light);
      margin-bottom: 12px;
    }
    .news-arrow {
      font-size: 20px;
      color: var(--color-primary);
      opacity: 0;
      transform: translateX(-6px);
      transition: var(--transition);
    }
    .news-item:hover .news-arrow {
      opacity: 1;
      transform: translateX(0);
    }
    .news-empty {
      text-align: center;
      padding: 60px 24px;
      background: #fff;
      border: 1px dashed var(--color-border);
      border-radius: var(--radius);
    }
    .news-empty i {
      font-size: 40px;
      color: var(--color-border);
      margin-bottom: 16px;
      display: block;
    }
    .news-empty p {
      font-size: 16px;
      color: var(--color-text-light);
    }

    /* ===== FAQ ===== */
    .faq-layout {
      display: grid;
      grid-template-columns: 0.85fr 1.15fr;
      gap: 64px;
    }
    .faq-side {
      position: sticky;
      top: 100px;
      align-self: start;
    }
    .faq-side h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .faq-side p {
      font-size: 16px;
      color: var(--color-text-light);
      margin-bottom: 24px;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: rgba(31,74,56,0.3);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      background: transparent;
      text-align: left;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      padding: 20px 22px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .faq-icon {
      position: relative;
      width: 18px;
      height: 18px;
      flex-shrink: 0;
    }
    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--color-primary);
      border-radius: 2px;
      transition: var(--transition);
    }
    .faq-icon::before {
      top: 8px;
      left: 0;
      width: 18px;
      height: 2px;
    }
    .faq-icon::after {
      top: 0;
      left: 8px;
      width: 2px;
      height: 18px;
    }
    .faq-item.active .faq-icon::after {
      transform: rotate(90deg);
      opacity: 0;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }
    .faq-answer-inner {
      padding: 0 22px 20px;
      font-size: 15px;
      color: var(--color-text-light);
      line-height: 1.8;
    }

    /* ===== Contact ===== */
    .contact-section {
      background: var(--color-dark);
      background-image: url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      padding: 96px 0;
      position: relative;
    }
    .contact-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(16,23,20,0.82);
    }
    .contact-section .container {
      position: relative;
      z-index: 2;
    }
    .contact-cta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      margin-bottom: 48px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255,255,255,0.12);
    }
    .contact-cta .eyebrow {
      color: var(--color-accent);
    }
    .contact-cta h2 {
      font-size: 34px;
      font-weight: 800;
      color: #fff;
      margin: 12px 0;
    }
    .contact-cta p {
      font-size: 16px;
      color: rgba(255,255,255,0.7);
      max-width: 480px;
    }
    .contact-info {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 40px;
    }
    .contact-info-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      color: #fff;
    }
    .contact-info-item i {
      font-size: 20px;
      color: var(--color-accent);
      background: rgba(194,161,111,0.12);
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(194,161,111,0.25);
      flex-shrink: 0;
    }
    .contact-info-item h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 6px;
    }
    .contact-info-item p {
      font-size: 14px;
      color: rgba(255,255,255,0.75);
    }
    .contact-form-wrap {
      max-width: 720px;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-lg);
      padding: 32px;
      backdrop-filter: blur(8px);
    }
    .contact-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 13px;
      font-weight: 500;
      color: rgba(255,255,255,0.8);
      letter-spacing: 0.04em;
    }
    .form-group input,
    .form-group textarea {
      height: 46px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.16);
      border-radius: 8px;
      padding: 0 16px;
      color: #fff;
      font-size: 15px;
      transition: var(--transition);
    }
    .form-group textarea {
      height: auto;
      padding: 14px 16px;
      resize: vertical;
    }
    .form-group input:focus,
    .form-group textarea:focus {
      border-color: var(--color-accent);
      box-shadow: 0 0 0 3px rgba(194,161,111,0.2);
      background: rgba(255,255,255,0.12);
    }
    .form-group input::placeholder,
    .form-group textarea::placeholder {
      color: rgba(255,255,255,0.35);
    }
    .form-group.full {
      grid-column: span 2;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #0d130f;
      color: rgba(255,255,255,0.8);
      padding-top: 72px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 48px;
      padding-bottom: 56px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand .logo {
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-brand .logo span {
      color: var(--color-accent);
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255,255,255,0.6);
      max-width: 300px;
    }
    .footer-col h3 {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 20px;
      letter-spacing: 0.06em;
    }
    .footer-col ul li {
      margin-bottom: 12px;
    }
    .footer-col a,
    .footer-col li {
      font-size: 14px;
      color: rgba(255,255,255,0.6);
      transition: var(--transition);
    }
    .footer-col a:hover {
      color: var(--color-accent);
    }
    .footer-bottom {
      padding: 24px 0;
      text-align: center;
      font-size: 13px;
      color: rgba(255,255,255,0.4);
    }
    .footer-bottom .container {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    /* ===== Mobile Tab Bar ===== */
    .mobile-tab-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 60px;
      background: #ffffff;
      border-top: 1px solid var(--color-border);
      z-index: 60;
      padding-bottom: env(safe-area-inset-bottom);
      box-shadow: 0 -4px 16px rgba(16,23,20,0.06);
    }
    .tab-item {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 3px;
      font-size: 11px;
      font-weight: 500;
      color: var(--color-text-light);
      transition: var(--transition);
    }
    .tab-item i {
      font-size: 18px;
      transition: transform 0.2s ease;
    }
    .tab-item.active {
      color: var(--color-primary);
      font-weight: 600;
    }
    .tab-item.active i {
      transform: scale(1.1);
    }
    .tab-item:hover {
      color: var(--color-primary);
    }

    /* ===== Scroll Animations ===== */
    .fade-up {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.5s ease, transform 0.5s ease;
    }
    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }
    @media (prefers-reduced-motion: reduce) {
      .fade-up {
        opacity: 1;
        transform: none;
        transition: none;
      }
      html {
        scroll-behavior: auto;
      }
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .hero {
        padding: 120px 0 60px;
      }
      .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-metrics {
        flex-direction: row;
        padding: 20px;
      }
      .hero-metric {
        flex: 1;
        border-bottom: none;
        border-right: 1px solid rgba(255,255,255,0.1);
        padding-bottom: 0;
      }
      .hero-metric:last-child {
        border-right: none;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
      .cases-grid {
        grid-template-columns: 1fr 1fr;
      }
      .case-large {
        grid-row: auto;
        min-height: 320px;
      }
      .case-card {
        min-height: 240px;
      }
      .solution-steps::before {
        display: none;
      }
      .solution-steps {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 768px) {
      .main-nav,
      .header-cta .btn {
        display: none;
      }
      .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .section {
        padding: 64px 0;
      }
      .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .cases-grid {
        grid-template-columns: 1fr;
      }
      .contact-info {
        grid-template-columns: 1fr;
      }
      .contact-form {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .faq-layout {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .faq-side {
        position: static;
      }
      .contact-cta {
        flex-direction: column;
        align-items: flex-start;
      }
      .hero-text h1 {
        font-size: 32px;
      }
      .section-head h2 {
        font-size: 26px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .mobile-tab-bar {
        display: flex;
      }
      .contact-section {
        padding-bottom: 80px;
      }
      .site-footer {
        padding-bottom: 76px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .hero-metrics {
        flex-direction: column;
      }
      .hero-metric {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding-bottom: 14px;
      }
      .hero-metric:last-child {
        border-bottom: none;
        padding-bottom: 0;
      }
      .solution-steps {
        grid-template-columns: 1fr;
      }
      .news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }
      .news-meta {
        text-align: left;
      }
      .news-date {
        margin-bottom: 0;
      }
      .news-arrow {
        display: none;
      }
      .contact-form-wrap {
        padding: 20px;
      }
      .btn {
        padding: 0 18px;
      }
    }

/* roulang page: category1 */
:root {
      --color-primary: #1F4A38;
      --color-primary-dark: #17362A;
      --color-primary-light: #EAF0EC;
      --color-accent: #C2A16F;
      --color-accent-light: #F2EBDF;
      --color-bg: #F7F4EF;
      --color-text: #211C17;
      --color-text-soft: #6D6A63;
      --color-border: #E4DED3;
      --color-deep: #101714;
      --radius-card: 12px;
      --radius-image: 16px;
      --shadow-card: 0 2px 8px rgba(16, 23, 20, 0.05);
      --shadow-hover: 0 12px 28px rgba(16, 23, 20, 0.12);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      background-color: var(--color-bg);
      color: var(--color-text);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

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

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

    /* Reveal animations */
    .reveal {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.5s ease, transform 0.5s ease;
    }

    .reveal.is-visible {
      opacity: 1;
      transform: translateY(0);
    }

    @media (prefers-reduced-motion: reduce) {
      .reveal {
        opacity: 1;
        transform: none;
        transition: none;
      }
      * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
      }
    }

    /* Header & Nav */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 50;
      height: 64px;
      background: rgba(255, 255, 255, 0.82);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--color-border);
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }

    .site-header.scrolled {
      background: #fff;
      box-shadow: 0 2px 16px rgba(16, 23, 20, 0.08);
    }

    .site-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
    }

    .logo {
      font-size: 1.45rem;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--color-primary);
      display: flex;
      align-items: center;
    }

    .logo span {
      color: var(--color-accent);
      font-weight: 700;
      margin-left: 1px;
    }

    .main-nav ul {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .main-nav a {
      font-size: 0.925rem;
      font-weight: 500;
      color: var(--color-text-soft);
      position: relative;
      padding: 8px 0;
      letter-spacing: 0.02em;
    }

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

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

    .main-nav a.active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      border-radius: 2px;
      background: var(--color-accent);
    }

    .btn-nav {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 20px;
      background: var(--color-primary);
      color: #fff;
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: 8px;
      border: none;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.2s ease;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

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

    /* Mobile menu */
    .mobile-menu-btn {
      display: none;
      width: 42px;
      height: 42px;
      border: none;
      background: transparent;
      color: var(--color-text);
      font-size: 1.4rem;
      cursor: pointer;
      border-radius: 8px;
      align-items: center;
      justify-content: center;
    }

    .mobile-menu-btn:hover {
      background: var(--color-bg);
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: #fff;
      border-bottom: 1px solid var(--color-border);
      box-shadow: 0 12px 24px rgba(16, 23, 20, 0.08);
      z-index: 49;
      padding: 16px 0;
    }

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

    .mobile-menu ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .mobile-menu li a {
      display: block;
      padding: 12px 24px;
      font-size: 1rem;
      color: var(--color-text);
      border-left: 3px solid transparent;
    }

    .mobile-menu li a.active {
      border-left-color: var(--color-accent);
      color: var(--color-primary);
      font-weight: 600;
      background: var(--color-primary-light);
    }

    /* Buttons */
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 32px;
      background: var(--color-primary);
      color: #fff;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 8px;
      border: none;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
      letter-spacing: 0.02em;
      box-shadow: 0 4px 14px rgba(31, 74, 56, 0.2);
    }

    .btn-primary:hover {
      background: var(--color-primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(31, 74, 56, 0.25);
    }

    .btn-primary:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 32px;
      background: transparent;
      color: var(--color-primary);
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 8px;
      border: 1.5px solid var(--color-accent);
      cursor: pointer;
      transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
      letter-spacing: 0.02em;
    }

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

    .btn-outline:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .btn-outline-white {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 32px;
      background: transparent;
      color: #fff;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 8px;
      border: 1.5px solid rgba(255, 255, 255, 0.6);
      cursor: pointer;
      transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
      letter-spacing: 0.02em;
    }

    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: #fff;
      transform: translateY(-2px);
    }

    /* Hero */
    .hero-section {
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      padding-top: 120px;
      padding-bottom: 80px;
    }

    .hero-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(16, 23, 20, 0.88) 45%, rgba(16, 23, 20, 0.55) 100%);
      z-index: 1;
    }

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

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.18em;
      color: var(--color-accent);
      margin-bottom: 16px;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      width: 28px;
      height: 2px;
      background: var(--color-accent);
      border-radius: 2px;
    }

    /* Breadcrumb */
    .breadcrumb {
      padding: 14px 0;
      border-bottom: 1px solid var(--color-border);
      background: var(--color-bg);
    }

    .breadcrumb .container {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      color: var(--color-text-soft);
    }

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

    .breadcrumb .sep {
      color: var(--color-border);
    }

    .breadcrumb .current {
      color: var(--color-primary);
      font-weight: 500;
    }

    /* Service rows */
    .service-list {
      padding-top: 88px;
      padding-bottom: 88px;
    }

    .service-row {
      margin-bottom: 72px;
    }

    .service-row:last-child {
      margin-bottom: 0;
    }

    .service-media {
      border-radius: var(--radius-image);
      overflow: hidden;
      position: relative;
      box-shadow: var(--shadow-card);
      transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

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

    .service-media img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      transition: transform 0.6s ease;
    }

    .service-row:hover .service-media img {
      transform: scale(1.03);
    }

    .service-number {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1;
      color: transparent;
      -webkit-text-stroke: 1px var(--color-accent);
      margin-bottom: 8px;
      font-family: -apple-system, "PingFang SC", sans-serif;
      letter-spacing: 0.03em;
    }

    .service-title {
      font-size: 1.75rem;
      font-weight: 700;
      color: var(--color-text);
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .service-desc {
      font-size: 1rem;
      line-height: 1.8;
      color: var(--color-text-soft);
      margin-bottom: 16px;
    }

    .tag-group {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 4px 14px;
      background: var(--color-accent-light);
      color: #8a6f45;
      font-size: 0.78rem;
      font-weight: 600;
      border-radius: 999px;
      letter-spacing: 0.04em;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .tag:hover {
      background: var(--color-accent);
      color: #fff;
    }

    /* Process */
    .process-section {
      background: #fff;
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
    }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      margin-top: 48px;
    }

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

    .process-step:not(:last-child)::after {
      content: "";
      position: absolute;
      top: 32px;
      right: -20px;
      width: 40px;
      height: 1px;
      background: var(--color-accent);
      opacity: 0.5;
    }

    .process-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 56px;
      height: 56px;
      background: var(--color-primary-light);
      color: var(--color-primary);
      font-size: 1.1rem;
      font-weight: 800;
      border-radius: 14px;
      margin-bottom: 20px;
      letter-spacing: 0.04em;
      transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
    }

    .process-step:hover .process-num {
      background: var(--color-primary);
      color: #fff;
      transform: translateY(-3px);
    }

    .process-step h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* Scenarios */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 48px;
    }

    .scenario-card {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .scenario-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--color-accent), transparent);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

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

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

    .scenario-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--color-primary-light);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      margin-bottom: 20px;
      transition: background 0.3s ease, color 0.3s ease;
    }

    .scenario-card:hover .scenario-icon {
      background: var(--color-primary);
      color: #fff;
    }

    .scenario-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .scenario-card p {
      font-size: 0.875rem;
      color: var(--color-text-soft);
      line-height: 1.7;
      margin: 0;
    }

    /* Stats */
    .stats-section {
      background: var(--color-deep);
      position: relative;
      overflow: hidden;
    }

    .stats-section::before {
      content: "";
      position: absolute;
      top: -40%;
      right: -10%;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(194, 161, 111, 0.12) 0%, transparent 70%);
      pointer-events: none;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 48px;
      padding: 72px 0;
      position: relative;
      z-index: 2;
    }

    .stat-item {
      text-align: left;
    }

    .stat-number {
      font-size: 3.25rem;
      font-weight: 800;
      color: #fff;
      line-height: 1.1;
      letter-spacing: -0.01em;
      display: flex;
      align-items: baseline;
    }

    .stat-number .suffix {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--color-accent);
      margin-left: 4px;
    }

    .stat-label {
      margin-top: 10px;
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.6);
      letter-spacing: 0.06em;
    }

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

    .faq-layout {
      display: grid;
      grid-template-columns: 1fr 1.6fr;
      gap: 64px;
      align-items: start;
    }

    .faq-side h2 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .faq-side p {
      color: var(--color-text-soft);
      font-size: 0.95rem;
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .faq-contact-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      color: var(--color-primary);
      font-size: 0.9rem;
      transition: gap 0.2s ease;
    }

    .faq-contact-link:hover {
      gap: 12px;
      color: var(--color-primary-dark);
    }

    .faq-accordion {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      background: #fff;
      overflow: hidden;
    }

    .faq-item {
      border-bottom: 1px solid var(--color-border);
    }

    .faq-item:last-child {
      border-bottom: none;
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      background: transparent;
      border: none;
      padding: 20px 24px;
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--color-text);
      cursor: pointer;
      text-align: left;
      transition: background 0.2s ease, color 0.2s ease;
      min-height: 56px;
    }

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

    .faq-question .icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: var(--color-accent);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      padding: 0 24px;
    }

    .faq-answer-inner {
      padding-bottom: 20px;
      font-size: 0.9rem;
      line-height: 1.8;
      color: var(--color-text-soft);
    }

    .faq-item.open .faq-answer {
      max-height: 400px;
    }

    /* CTA */
    .cta-section {
      position: relative;
      background-image: url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      padding: 88px 0;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(16, 23, 20, 0.82);
      z-index: 1;
    }

    .cta-content {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .cta-left h2 {
      font-size: 2.2rem;
      font-weight: 700;
      color: #fff;
      line-height: 1.35;
      margin-bottom: 16px;
    }

    .cta-left p {
      color: rgba(255, 255, 255, 0.75);
      font-size: 1rem;
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .cta-form {
      background: #fff;
      border-radius: var(--radius-image);
      padding: 36px;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
    }

    .cta-form h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .cta-form .form-tip {
      font-size: 0.82rem;
      color: var(--color-text-soft);
      margin-bottom: 24px;
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--color-text-soft);
      margin-bottom: 6px;
      letter-spacing: 0.02em;
    }

    .form-group input,
    .form-group textarea {
      width: 100%;
      height: 44px;
      border: 1px solid var(--color-border);
      border-radius: 8px;
      padding: 0 14px;
      font-size: 0.9rem;
      color: var(--color-text);
      background: #faf9f7;
      transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
      outline: none;
    }

    .form-group textarea {
      height: auto;
      padding: 12px 14px;
      resize: vertical;
      min-height: 80px;
    }

    .form-group input:focus,
    .form-group textarea:focus {
      border-color: var(--color-primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(31, 74, 56, 0.12);
    }

    .form-group input::placeholder,
    .form-group textarea::placeholder {
      color: #b8b2a8;
    }

    .btn-submit {
      width: 100%;
      height: 48px;
      background: var(--color-primary);
      color: #fff;
      border: none;
      border-radius: 8px;
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
      letter-spacing: 0.03em;
    }

    .btn-submit:hover {
      background: var(--color-primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 8px 20px rgba(31, 74, 56, 0.2);
    }

    .btn-submit:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    /* Footer */
    .site-footer {
      background: var(--color-deep);
      color: rgba(255, 255, 255, 0.7);
      padding: 64px 0 24px;
    }

    .site-footer .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand .logo {
      color: #fff;
      font-size: 1.6rem;
      margin-bottom: 16px;
      display: inline-block;
    }

    .footer-brand .logo span {
      color: var(--color-accent);
    }

    .footer-brand p {
      font-size: 0.875rem;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.55);
      max-width: 280px;
      margin: 0;
    }

    .footer-col h3 {
      color: #fff;
      font-size: 0.9rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .footer-col li {
      margin-bottom: 10px;
    }

    .footer-col a {
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.6);
      transition: color 0.2s ease, padding-left 0.2s ease;
    }

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

    .footer-col li {
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.6);
      line-height: 1.7;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 0.8rem;
      color: rgba(255, 255, 255, 0.4);
      letter-spacing: 0.03em;
    }

    /* Mobile bottom tab */
    .bottom-tab {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-top: 1px solid var(--color-border);
      height: 60px;
      z-index: 60;
      padding-bottom: env(safe-area-inset-bottom);
    }

    .bottom-tab .tab-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      height: 60px;
    }

    .bottom-tab .tab-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 3px;
      color: var(--color-text-soft);
      font-size: 0.68rem;
      font-weight: 500;
      transition: color 0.2s ease, transform 0.2s ease;
    }

    .bottom-tab .tab-item i {
      font-size: 1.15rem;
      transition: transform 0.2s ease;
    }

    .bottom-tab .tab-item:hover {
      color: var(--color-primary);
    }

    .bottom-tab .tab-item.active {
      color: var(--color-primary);
      font-weight: 600;
    }

    .bottom-tab .tab-item.active i {
      transform: scale(1.1);
      color: var(--color-accent);
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
      }

      .process-step:nth-child(2)::after {
        display: none;
      }

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

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
      }

      .faq-layout {
        grid-template-columns: 1fr;
        gap: 40px;
      }
    }

    @media (max-width: 768px) {
      .site-header .main-nav {
        display: none;
      }

      .site-header .btn-nav {
        display: none;
      }

      .mobile-menu-btn {
        display: flex;
      }

      .bottom-tab {
        display: block;
      }

      body {
        padding-bottom: 60px;
      }

      .hero-section {
        padding-top: 96px;
        padding-bottom: 56px;
      }

      .hero-section h1 {
        font-size: 1.8rem;
        line-height: 1.35;
      }

      .service-row .grid {
        gap: 32px !important;
      }

      .service-media img {
        height: 220px;
      }

      .service-title {
        font-size: 1.4rem;
      }

      .cta-content {
        grid-template-columns: 1fr;
        gap: 32px;
      }

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

      .footer-brand {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 520px) {
      .process-grid {
        grid-template-columns: 1fr;
      }

      .process-step::after {
        display: none;
      }

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

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

      .stat-number {
        font-size: 2.2rem;
      }

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

      .footer-brand {
        grid-column: auto;
      }

      .cta-form {
        padding: 24px;
      }

      .hero-section h1 {
        font-size: 1.6rem;
      }

      .btn-primary,
      .btn-outline,
      .btn-outline-white {
        width: 100%;
        padding: 0 20px;
      }

      .hero-section .flex {
        flex-direction: column;
      }
    }

    @media (max-width: 360px) {
      .site-header .container {
        padding: 0 12px;
      }

      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

/* roulang page: article */
/* ===================== 设计变量 ===================== */
    :root {
      --color-primary: #1F4A38;
      --color-primary-hover: #17362A;
      --color-primary-light: #EAF0EC;
      --color-accent: #C2A16F;
      --color-accent-light: #F2EBDF;
      --color-bg: #F7F4EF;
      --color-dark: #101714;
      --color-text: #211C17;
      --color-text-secondary: #6D6A63;
      --color-border: #E4DED3;
      --radius-card: 12px;
      --radius-lg: 16px;
      --shadow-default: 0 1px 3px rgba(0, 0, 0, 0.06);
      --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.10);
      --transition-base: all 0.25s ease;
    }

    /* ===================== Reset 基础 ===================== */
    *,
    *::before,
    *::after {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      background-color: var(--color-bg);
      color: var(--color-text);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      padding-bottom: 0;
    }

    a {
      color: var(--color-primary);
      text-decoration: none;
      transition: var(--transition-base);
    }

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

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

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

    /* ===================== 容器 ===================== */
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .container-narrow {
      max-width: 760px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===================== 头部导航 ===================== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(247, 244, 239, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
      transition: var(--transition-base);
    }

    .site-header.scrolled {
      background: rgba(255, 255, 255, 0.98);
      box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      position: relative;
    }

    .logo {
      font-size: 20px;
      font-weight: 800;
      color: var(--color-primary);
      letter-spacing: 0.02em;
      display: inline-flex;
      align-items: center;
      line-height: 1;
    }

    .logo span {
      color: var(--color-accent);
      font-weight: 700;
      margin-left: 2px;
    }

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

    .main-nav ul {
      display: flex;
      list-style: none;
      gap: 6px;
      align-items: center;
    }

    .main-nav a {
      position: relative;
      display: block;
      padding: 8px 16px;
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-secondary);
      border-radius: 8px;
      transition: var(--transition-base);
    }

    .main-nav a:hover {
      color: var(--color-primary);
      background: var(--color-primary-light);
    }

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

    .main-nav a.active::after {
      content: '';
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 4px;
      height: 2px;
      border-radius: 2px;
      background: var(--color-accent);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 40px;
      padding: 0 20px;
      background: var(--color-primary);
      color: #fff !important;
      font-size: 14px;
      font-weight: 500;
      border-radius: 8px;
      transition: var(--transition-base);
      white-space: nowrap;
    }

    .nav-cta:hover {
      background: var(--color-primary-hover);
      color: #fff !important;
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(31, 74, 56, 0.3);
    }

    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--color-border);
      width: 42px;
      height: 42px;
      border-radius: 8px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      padding: 0;
      transition: var(--transition-base);
    }

    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--color-text);
      margin: 2px auto;
      border-radius: 2px;
      transition: var(--transition-base);
    }

    .menu-toggle:hover {
      border-color: var(--color-primary);
    }

    .mobile-menu {
      display: none;
      position: absolute;
      top: 64px;
      left: 0;
      right: 0;
      background: #fff;
      border-bottom: 1px solid var(--color-border);
      box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
      padding: 16px;
      z-index: 49;
    }

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

    .mobile-menu a {
      display: block;
      padding: 12px 16px;
      font-size: 15px;
      color: var(--color-text);
      border-radius: 8px;
      margin-bottom: 4px;
      transition: var(--transition-base);
    }

    .mobile-menu a:hover {
      background: var(--color-primary-light);
      color: var(--color-primary);
    }

    .mobile-menu a.active {
      background: var(--color-primary-light);
      color: var(--color-primary);
      font-weight: 600;
    }

    /* ===================== 面包屑 ===================== */
    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 13px;
      color: var(--color-text-secondary);
      padding: 0;
    }

    .breadcrumb a {
      color: rgba(255, 255, 255, 0.7);
      transition: var(--transition-base);
    }

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

    .breadcrumb .separator {
      color: rgba(255, 255, 255, 0.4);
    }

    .breadcrumb .current {
      color: rgba(255, 255, 255, 0.92);
      font-weight: 500;
      max-width: 260px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    /* ===================== 文章 Hero ===================== */
    .article-hero {
      position: relative;
      background-size: cover;
      background-position: center;
      padding: 64px 0 88px;
      overflow: hidden;
    }

    .article-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(16, 23, 20, 0.96) 20%, rgba(23, 54, 42, 0.88));
      z-index: 1;
    }

    .article-hero::after {
      content: '';
      position: absolute;
      top: -80px;
      right: -80px;
      width: 300px;
      height: 300px;
      background: radial-gradient(circle, rgba(194, 161, 111, 0.15), transparent 70%);
      z-index: 1;
    }

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

    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      letter-spacing: 0.08em;
      color: var(--color-accent);
      text-transform: uppercase;
      margin-bottom: 12px;
      font-weight: 500;
    }

    /* ===================== 文章正文卡片 ===================== */
    .article-main {
      margin-top: -56px;
      position: relative;
      z-index: 5;
      padding-bottom: 32px;
    }

    .article-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 48px 56px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
      border: 1px solid var(--color-border);
    }

    .article-card h1 {
      font-size: 32px;
      line-height: 1.3;
      font-weight: 800;
      letter-spacing: 0.01em;
      color: var(--color-text);
      margin-bottom: 20px;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px 24px;
      margin-bottom: 32px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--color-border);
    }

    .meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      color: var(--color-text-secondary);
    }

    .meta-item i {
      color: var(--color-accent);
      font-size: 14px;
    }

    .meta-tag {
      display: inline-flex;
      align-items: center;
      padding: 2px 10px;
      background: var(--color-accent-light);
      color: #8a6b3d;
      font-size: 12px;
      font-weight: 600;
      border-radius: 20px;
      line-height: 1.6;
    }

    /* ===================== 正文内容 ===================== */
    .article-content {
      font-size: 16px;
      line-height: 1.85;
      color: #3a352f;
    }

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

    .article-content h2 {
      font-size: 24px;
      font-weight: 700;
      margin: 40px 0 16px;
      padding-top: 8px;
      color: var(--color-text);
    }

    .article-content h3 {
      font-size: 18px;
      font-weight: 600;
      margin: 32px 0 12px;
      color: var(--color-text);
    }

    .article-content h4 {
      font-size: 16px;
      font-weight: 600;
      margin: 24px 0 10px;
      color: var(--color-text);
    }

    .article-content blockquote {
      background: var(--color-accent-light);
      border-left: 3px solid var(--color-accent);
      padding: 16px 24px;
      margin: 24px 0;
      border-radius: 0 8px 8px 0;
      color: #5c5548;
      font-style: normal;
    }

    .article-content blockquote p:last-child {
      margin-bottom: 0;
    }

    .article-content img {
      border-radius: var(--radius-card);
      margin: 24px auto;
      box-shadow: var(--shadow-default);
    }

    .article-content figure {
      margin: 24px 0;
    }

    .article-content figcaption {
      text-align: center;
      font-size: 13px;
      color: var(--color-text-secondary);
      margin-top: 12px;
      margin-bottom: 8px;
    }

    .article-content ul,
    .article-content ol {
      margin: 16px 0 24px;
      padding-left: 24px;
    }

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

    .article-content li::marker {
      color: var(--color-accent);
    }

    .article-content a {
      color: var(--color-primary);
      border-bottom: 1px solid rgba(31, 74, 56, 0.3);
      transition: var(--transition-base);
    }

    .article-content a:hover {
      border-bottom-color: var(--color-primary);
    }

    .article-content code {
      background: var(--color-primary-light);
      padding: 2px 6px;
      border-radius: 4px;
      font-size: 14px;
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    }

    .article-content pre {
      background: var(--color-dark);
      color: #e8e6e3;
      padding: 20px 24px;
      border-radius: var(--radius-card);
      overflow-x: auto;
      font-size: 14px;
      line-height: 1.7;
      margin: 24px 0;
    }

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

    .article-content table {
      width: 100%;
      border-collapse: collapse;
      margin: 24px 0;
      font-size: 15px;
    }

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

    .article-content table th {
      background: var(--color-primary-light);
      font-weight: 600;
      color: var(--color-text);
    }

    /* 内容未找到 */
    .not-found {
      text-align: center;
      padding: 64px 24px;
      background: var(--color-bg);
      border-radius: var(--radius-card);
      border: 1px dashed var(--color-border);
    }

    .not-found i {
      font-size: 48px;
      color: var(--color-accent);
      margin-bottom: 16px;
      display: block;
    }

    .not-found p {
      font-size: 18px;
      color: var(--color-text);
      margin-bottom: 16px;
      font-weight: 500;
    }

    .not-found a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--color-primary);
      font-weight: 600;
      padding: 10px 20px;
      border: 1px solid var(--color-primary);
      border-radius: 8px;
      transition: var(--transition-base);
    }

    .not-found a:hover {
      background: var(--color-primary);
      color: #fff;
    }

    /* ===================== 上一篇/下一篇 ===================== */
    .article-pagination {
      margin-top: 24px;
    }

    .pagination-inner {
      display: flex;
      justify-content: space-between;
      gap: 16px;
    }

    .page-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 12px 20px;
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: 8px;
      font-size: 14px;
      color: var(--color-text);
      transition: var(--transition-base);
      max-width: calc(50% - 8px);
      font-weight: 500;
    }

    .page-link i {
      color: var(--color-accent);
      font-size: 13px;
      transition: transform 0.2s ease;
    }

    .page-link:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
      box-shadow: var(--shadow-default);
    }

    .page-link:hover i {
      transform: translateX(-3px);
    }

    .page-link.next:hover i {
      transform: translateX(3px);
    }

    .page-link.next {
      margin-left: auto;
      justify-content: flex-end;
    }

    /* ===================== 相关推荐 ===================== */
    .related-section {
      padding: 64px 0 48px;
      background: var(--color-bg);
    }

    .related-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 32px;
    }

    .related-header h2 {
      font-size: 24px;
      font-weight: 700;
      color: var(--color-text);
      line-height: 1.3;
    }

    .view-all {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 500;
      color: var(--color-primary);
      transition: var(--transition-base);
    }

    .view-all i {
      transition: transform 0.2s ease;
    }

    .view-all:hover {
      color: var(--color-primary-hover);
    }

    .view-all:hover i {
      transform: translateX(4px);
    }

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

    .related-card {
      background: #fff;
      border-radius: var(--radius-card);
      border: 1px solid var(--color-border);
      overflow: hidden;
      display: block;
      transition: var(--transition-base);
    }

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

    .related-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }

    .related-card-body {
      padding: 20px;
    }

    .card-tag {
      display: inline-block;
      padding: 2px 8px;
      background: var(--color-accent-light);
      color: #8a6b3d;
      font-size: 12px;
      font-weight: 600;
      border-radius: 4px;
      margin-bottom: 10px;
      letter-spacing: 0.02em;
    }

    .related-card h3 {
      font-size: 16px;
      font-weight: 600;
      line-height: 1.55;
      margin-bottom: 10px;
      color: var(--color-text);
      transition: var(--transition-base);
    }

    .related-card:hover h3 {
      color: var(--color-primary);
    }

    .card-meta {
      font-size: 13px;
      color: var(--color-text-secondary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .card-meta i {
      color: var(--color-accent);
      font-size: 12px;
    }

    /* ===================== 联系 CTA ===================== */
    .cta-block {
      padding: 32px 0 80px;
      background: var(--color-bg);
    }

    .cta-inner {
      background: var(--color-primary);
      border-radius: var(--radius-lg);
      padding: 40px 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      position: relative;
      overflow: hidden;
    }

    .cta-inner::after {
      content: '';
      position: absolute;
      right: -60px;
      top: -60px;
      width: 220px;
      height: 220px;
      background: radial-gradient(circle, rgba(194, 161, 111, 0.25), transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .cta-left {
      position: relative;
      z-index: 1;
    }

    .cta-title {
      color: #fff;
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 6px;
      line-height: 1.35;
    }

    .cta-desc {
      color: rgba(255, 255, 255, 0.7);
      font-size: 14px;
    }

    .cta-right {
      position: relative;
      z-index: 1;
      flex-shrink: 0;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 44px;
      padding: 0 28px;
      background: var(--color-accent);
      color: var(--color-dark);
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      transition: var(--transition-base);
      white-space: nowrap;
    }

    .btn-primary:hover {
      background: #d4b580;
      color: var(--color-dark);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(194, 161, 111, 0.3);
    }

    .btn-primary:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    /* ===================== 页脚 ===================== */
    .site-footer {
      background: var(--color-dark);
      color: rgba(255, 255, 255, 0.7);
      padding: 64px 0 32px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand .logo {
      color: #fff;
      font-size: 22px;
      margin-bottom: 12px;
      display: inline-flex;
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.6);
      margin-top: 12px;
    }

    .footer-col h3 {
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: 0.04em;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: 10px;
      font-size: 14px;
    }

    .footer-col ul a {
      color: rgba(255, 255, 255, 0.6);
      font-size: 14px;
      transition: var(--transition-base);
    }

    .footer-col ul a:hover {
      color: var(--color-accent);
      padding-left: 4px;
    }

    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      display: flex;
      justify-content: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.45);
      text-align: center;
    }

    /* ===================== 移动端底部 Tab ===================== */
    .mobile-tabbar {
      display: none;
    }

    /* ===================== 动效 ===================== */
    .fade-up {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.5s ease, transform 0.5s ease;
    }

    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===================== 响应式 ===================== */
    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }

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

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

      .nav-cta {
        display: none;
      }

      .menu-toggle {
        display: flex;
      }

      .header-inner {
        height: 56px;
      }

      .mobile-menu {
        top: 56px;
      }

      .article-hero {
        padding: 40px 0 72px;
      }

      .article-main {
        margin-top: -44px;
      }

      .article-card {
        padding: 24px 20px;
        border-radius: var(--radius-card);
      }

      .article-card h1 {
        font-size: 24px;
        line-height: 1.35;
      }

      .article-content {
        font-size: 15px;
        line-height: 1.8;
      }

      .article-content h2 {
        font-size: 20px;
      }

      .article-content h3 {
        font-size: 17px;
      }

      .pagination-inner {
        flex-direction: column;
      }

      .page-link,
      .page-link.next {
        max-width: 100%;
        margin-left: 0;
      }

      .related-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }

      .related-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }

      .cta-inner {
        flex-direction: column;
        text-align: center;
        padding: 32px 24px;
      }

      .cta-right {
        width: 100%;
      }

      .btn-primary {
        width: 100%;
        justify-content: center;
      }

      .mobile-tabbar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-top: 1px solid var(--color-border);
        z-index: 100;
        padding-bottom: env(safe-area-inset-bottom);
        box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.04);
      }

      .mobile-tabbar a {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        font-size: 10px;
        color: var(--color-text-secondary);
        transition: var(--transition-base);
      }

      .mobile-tabbar a i {
        font-size: 18px;
        transition: transform 0.2s ease, color 0.2s ease;
      }

      .mobile-tabbar a.active {
        color: var(--color-primary);
      }

      .mobile-tabbar a.active i {
        transform: scale(1.08);
      }

      body {
        padding-bottom: 60px;
      }

      .site-footer {
        padding-bottom: calc(32px + 60px);
      }

      .footer-bottom {
        font-size: 12px;
        flex-wrap: wrap;
      }
    }

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

      .container-narrow {
        padding: 0 16px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .article-meta {
        gap: 10px;
        flex-direction: row;
        flex-wrap: wrap;
      }

      .meta-item {
        font-size: 12px;
      }

      .breadcrumb {
        font-size: 12px;
      }

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

      .hero-eyebrow {
        font-size: 11px;
      }
    }

    /* ===================== 无障碍与减少动效 ===================== */
    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
      }

      html {
        scroll-behavior: auto;
      }

      .fade-up {
        opacity: 1;
        transform: none;
      }
    }

    a:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
      border-radius: 4px;
    }

    button:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

/* roulang page: category2 */
:root {
    --color-primary: #1F4A38;
    --color-primary-hover: #17362A;
    --color-primary-light: #EAF0EC;
    --color-accent: #C2A16F;
    --color-accent-light: #F2EBDF;
    --color-bg: #F7F4EF;
    --color-text: #211C17;
    --color-text-secondary: #6D6A63;
    --color-border: #E4DED3;
    --color-dark: #101714;
    --radius: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(33,28,23,0.05);
    --shadow-lg: 0 12px 32px rgba(33,28,23,0.1);
  }
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img {
    max-width: 100%;
    display: block;
  }
  a {
    color: inherit;
    text-decoration: none;
  }
  button {
    font-family: inherit;
  }
  .container {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
  }
  @media (min-width: 768px) {
    .container {
      padding-left: 40px;
      padding-right: 40px;
    }
  }
  /* ===== Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(247, 244, 239, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: background 0.3s, box-shadow 0.3s;
  }
  .site-header.scrolled {
    background: #fff;
    box-shadow: 0 2px 12px rgba(33, 28, 23, 0.06);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
  }
  .logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    transition: color 0.2s;
  }
  .logo span {
    color: var(--color-accent);
    margin-left: 2px;
  }
  .logo:hover {
    color: var(--color-primary-hover);
  }
  .main-nav ul {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 6px;
  }
  .main-nav a {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    color: var(--color-text-secondary);
    border-radius: 8px;
    transition: color 0.2s, background 0.2s;
    position: relative;
    font-weight: 500;
  }
  .main-nav a:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
  }
  .main-nav a.active {
    color: var(--color-primary);
    font-weight: 700;
  }
  .main-nav a.active::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 2px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
  }
  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-primary);
    color: #fff;
    height: 40px;
    padding: 0 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.2s, transform 0.2s;
  }
  .nav-cta:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
  }
  .menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: transparent;
    color: var(--color-text);
    font-size: 18px;
    cursor: pointer;
  }
  @media (max-width: 1023px) {
    .main-nav {
      display: none;
      position: absolute;
      top: 64px;
      left: 0;
      right: 0;
      background: #fff;
      border-bottom: 1px solid var(--color-border);
      padding: 16px 24px 24px;
      box-shadow: 0 12px 32px rgba(33, 28, 23, 0.08);
    }
    .main-nav.open {
      display: block;
      border-radius: 0 0 12px 12px;
    }
    .main-nav ul {
      flex-direction: column;
      align-items: stretch;
      gap: 4px;
    }
    .main-nav a {
      padding: 12px 16px;
      font-size: 16px;
    }
    .main-nav a.active::after {
      display: none;
    }
    .menu-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
  }
  @media (max-width: 767px) {
    .header-inner {
      height: 56px;
    }
    .logo {
      font-size: 1.25rem;
    }
  }
  /* ===== Mobile Bottom Tab ===== */
  .mobile-bottom-tab {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--color-border);
    padding-bottom: env(safe-area-inset-bottom);
    height: calc(60px + env(safe-area-inset-bottom));
  }
  .mobile-bottom-tab ul {
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 60px;
    list-style: none;
  }
  .mobile-bottom-tab a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: var(--color-text-secondary);
    gap: 4px;
    transition: color 0.2s;
    padding: 4px 6px;
  }
  .mobile-bottom-tab a i {
    font-size: 18px;
    transition: transform 0.2s;
  }
  .mobile-bottom-tab a:hover {
    color: var(--color-primary);
  }
  .mobile-bottom-tab a.active {
    color: var(--color-primary);
    font-weight: 700;
  }
  .mobile-bottom-tab a.active i {
    transform: scale(1.1);
  }
  @media (max-width: 767px) {
    .mobile-bottom-tab {
      display: block;
    }
    body {
      padding-bottom: calc(60px + env(safe-area-inset-bottom));
    }
  }
  /* ===== Hero ===== */
  .page-hero {
    position: relative;
    padding: 72px 0 64px;
    background-color: var(--color-dark);
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    color: #fff;
    overflow: hidden;
  }
  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(16, 23, 20, 0.88) 0%, rgba(16, 23, 20, 0.62) 60%, rgba(16, 23, 20, 0.3) 100%);
  }
  .page-hero .container {
    position: relative;
    z-index: 2;
  }
  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 28px;
    letter-spacing: 0.02em;
  }
  .breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s;
  }
  .breadcrumb a:hover {
    color: #fff;
  }
  .breadcrumb .sep {
    color: rgba(255, 255, 255, 0.4);
  }
  .breadcrumb .current {
    color: #fff;
    font-weight: 600;
  }
  .page-hero h1 {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.02em;
    margin-bottom: 20px;
    max-width: 640px;
  }
  .page-hero .hero-desc {
    font-size: 1.05rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.85);
    max-width: 560px;
    margin-bottom: 32px;
  }
  .hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-primary);
    color: #fff;
    height: 44px;
    padding: 0 28px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(31, 74, 56, 0.25);
  }
  .btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(31, 74, 56, 0.3);
  }
  .btn-primary:focus-visible,
  .btn-outline:focus-visible,
  .menu-toggle:focus-visible,
  .faq-toggle:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }
  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: #fff;
    height: 44px;
    padding: 0 28px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
  }
  .btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
  }
  .hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    flex-wrap: wrap;
  }
  .hero-stats .stat-item {
    display: flex;
    flex-direction: column;
  }
  .hero-stats .num {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
  }
  .hero-stats .label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.65);
    letter-spacing: 0.06em;
  }
  @media (max-width: 767px) {
    .page-hero {
      padding: 48px 0 44px;
    }
    .page-hero h1 {
      font-size: 1.625rem;
    }
    .page-hero .hero-desc {
      font-size: 0.95rem;
    }
    .hero-stats {
      gap: 16px;
    }
  }
  /* ===== Section Common ===== */
  .section {
    padding: 64px 0;
  }
  .section-tight {
    padding: 48px 0;
  }
  .section-alt {
    background: #fff;
  }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 40px;
    gap: 24px;
    flex-wrap: wrap;
  }
  .eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 10px;
  }
  .section-title {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: 0.02em;
    color: var(--color-text);
  }
  .section-desc {
    color: var(--color-text-secondary);
    margin-top: 12px;
    max-width: 600px;
    line-height: 1.7;
  }
  @media (max-width: 767px) {
    .section {
      padding: 48px 0;
    }
    .section-title {
      font-size: 1.375rem;
    }
  }
  /* ===== Filter Pills ===== */
  .filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
  }
  .filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: #fff;
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
  }
  .filter-pill:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-light);
  }
  .filter-pill.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
  }
  /* ===== Case Cards ===== */
  .case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .case-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.25s, box-shadow 0.25s;
  }
  .case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
  }
  .case-card.wide {
    grid-column: span 1;
  }
  .case-media {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
  }
  .case-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
  }
  .case-card:hover .case-media img {
    transform: scale(1.04);
  }
  .case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(16, 23, 20, 0) 50%, rgba(16, 23, 20, 0.72) 100%);
    opacity: 0;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    transition: opacity 0.3s;
  }
  .case-card:hover .case-overlay {
    opacity: 1;
  }
  .case-overlay .view-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(4px);
    border-radius: 999px;
    padding: 8px 18px;
    transition: background 0.2s;
  }
  .case-overlay .view-link:hover {
    background: rgba(255, 255, 255, 0.28);
  }
  .case-body {
    padding: 20px 24px 24px;
  }
  .case-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-light);
    border-radius: 6px;
    padding: 3px 10px;
    margin-bottom: 10px;
    letter-spacing: 0.04em;
  }
  .case-body h3 {
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 8px;
    transition: color 0.2s;
  }
  .case-card:hover .case-body h3 {
    color: var(--color-primary);
  }
  .case-body p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.65;
  }
  .case-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text-secondary);
  }
  .case-meta i {
    color: var(--color-accent);
  }
  @media (max-width: 767px) {
    .case-grid {
      grid-template-columns: 1fr;
    }
  }
  /* ===== Dark Stats ===== */
  .stats-dark {
    background-color: var(--color-dark);
    background-image: linear-gradient(135deg, rgba(31, 74, 56, 0.35) 0%, rgba(16, 23, 20, 0.9) 45%);
    color: #fff;
  }
  .stats-dark .section-title {
    color: #fff;
  }
  .stats-dark .section-desc {
    color: rgba(255, 255, 255, 0.7);
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .stat-block {
    text-align: center;
    padding: 24px 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.04);
    transition: border-color 0.2s, background 0.2s;
  }
  .stat-block:hover {
    border-color: rgba(194, 161, 111, 0.5);
    background: rgba(255, 255, 255, 0.08);
  }
  .stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1.2;
  }
  .stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 8px;
  }
  @media (max-width: 767px) {
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .stat-num {
      font-size: 1.5rem;
    }
  }
  /* ===== Workflow ===== */
  .flow-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
  }
  .flow-step {
    position: relative;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px 22px;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .flow-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
  }
  .flow-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 16px;
    font-family: Georgia, serif;
  }
  .flow-step h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
  }
  .flow-step p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.65;
  }
  .flow-step::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -24px;
    width: 24px;
    height: 1px;
    background: var(--color-accent);
    opacity: 0.5;
  }
  .flow-step:last-child::after {
    display: none;
  }
  @media (max-width: 1023px) {
    .flow-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .flow-step::after {
      display: none;
    }
  }
  @media (max-width: 767px) {
    .flow-grid {
      grid-template-columns: 1fr;
    }
  }
  /* ===== Testimonials ===== */
  .testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .testimonial-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
  }
  .testimonial-card .quote-icon {
    font-size: 1.25rem;
    color: var(--color-accent);
    margin-bottom: 14px;
  }
  .testimonial-card blockquote {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: 18px;
    font-style: normal;
  }
  .testimonial-card .from {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text);
  }
  .testimonial-card .position {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 2px;
  }
  @media (max-width: 767px) {
    .testimonial-grid {
      grid-template-columns: 1fr;
    }
  }
  /* ===== FAQ ===== */
  .faq-wrap {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 48px;
    align-items: start;
  }
  .faq-aside {
    position: sticky;
    top: 90px;
  }
  .faq-aside .contact-card {
    background: var(--color-accent-light);
    border-radius: var(--radius);
    padding: 24px;
    margin-top: 20px;
  }
  .faq-aside .contact-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
  }
  .faq-aside .contact-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
  }
  .faq-list {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
    overflow: hidden;
  }
  .faq-item {
    border-bottom: 1px solid var(--color-border);
  }
  .faq-item:last-child {
    border-bottom: none;
  }
  .faq-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 24px;
    background: transparent;
    border: none;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
    transition: color 0.2s;
  }
  .faq-toggle:hover {
    color: var(--color-primary);
  }
  .faq-toggle .icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 16px;
    font-weight: 400;
    flex-shrink: 0;
    transition: transform 0.3s, background 0.3s, color 0.3s;
  }
  .faq-item.open .faq-toggle .icon {
    transform: rotate(45deg);
    background: var(--color-primary);
    color: #fff;
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .faq-answer-inner {
    padding: 0 24px 20px;
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.7;
  }
  .faq-item.open .faq-answer {
    max-height: 300px;
  }
  @media (max-width: 1023px) {
    .faq-wrap {
      grid-template-columns: 1fr;
      gap: 32px;
    }
    .faq-aside {
      position: static;
    }
  }
  /* ===== CTA ===== */
  .cta-section {
    background: var(--color-dark);
    background-image: linear-gradient(120deg, rgba(31, 74, 56, 0.6) 0%, rgba(16, 23, 20, 0.9) 60%);
    color: #fff;
  }
  .cta-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
  }
  .cta-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 8px;
  }
  .cta-wrap p {
    color: rgba(255, 255, 255, 0.75);
    max-width: 520px;
    line-height: 1.7;
  }
  .cta-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }
  @media (max-width: 767px) {
    .cta-title {
      font-size: 1.25rem;
    }
  }
  /* ===== Footer ===== */
  .site-footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 56px 0 0;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
  }
  .site-footer .logo {
    color: #fff;
    font-size: 1.375rem;
    display: inline-block;
    margin-bottom: 14px;
  }
  .site-footer .logo span {
    color: var(--color-accent);
  }
  .footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
    max-width: 280px;
  }
  .footer-col h3 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: 0.04em;
  }
  .footer-col ul {
    list-style: none;
  }
  .footer-col li {
    margin-bottom: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
  }
  .footer-col a {
    color: rgba(255, 255, 255, 0.65);
    transition: color 0.2s;
  }
  .footer-col a:hover {
    color: var(--color-accent);
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 20px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
  }
  @media (max-width: 767px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .footer-brand {
      grid-column: span 2;
    }
    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
  }
  /* ===== Reveal Animation ===== */
  .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }
  .reveal.in-view {
    opacity: 1;
    transform: translateY(0);
  }
  @media (prefers-reduced-motion: reduce) {
    .reveal {
      opacity: 1;
      transform: none;
      transition: none;
    }
    * {
      transition-duration: 0.01ms !important;
      animation-duration: 0.01ms !important;
    }
  }

/* roulang page: category3 */
:root {
    --primary: #1F4A38;
    --primary-hover: #17362A;
    --primary-light: #EAF0EC;
    --accent: #C2A16F;
    --accent-dark: #A98858;
    --accent-light: #F2EBDF;
    --bg: #F7F4EF;
    --text: #211C17;
    --text-light: #6D6A63;
    --border: #E4DED3;
    --dark: #101714;
    --radius: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-lg: 0 14px 34px rgba(0,0,0,0.08);
    --container: 1280px;
    --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
  }

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

  ul {
    list-style: none;
  }

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

  /* ========== Header ========== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 64px;
    background: rgba(255,255,255,0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(228,222,211,0.7);
    transition: box-shadow 0.3s ease, background 0.3s ease;
  }

  .site-header.scrolled {
    background: #fff;
    box-shadow: 0 4px 18px rgba(16,23,20,0.06);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
  }

  .logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .logo span {
    color: var(--accent);
    font-weight: 700;
    font-size: 20px;
  }

  .main-nav ul {
    display: flex;
    gap: 8px;
  }

  .main-nav a {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    color: var(--text-light);
    border-radius: 8px;
    font-weight: 500;
    transition: color 0.2s, background 0.2s;
  }

  .main-nav a:hover {
    color: var(--primary);
    background: var(--primary-light);
  }

  .main-nav a.active {
    color: var(--primary);
    font-weight: 600;
    position: relative;
  }

  .main-nav a.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 16px;
    right: 16px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
  }

  .btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .menu-toggle {
    display: none;
    font-size: 20px;
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: #fff;
  }

  /* ========== Buttons ========== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 46px;
    padding: 0 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: all 0.2s ease;
    outline-offset: 2px;
  }

  .btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  .btn-primary {
    background: var(--primary);
    color: #fff;
  }

  .btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(31,74,56,0.22);
  }

  .btn-outline {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--text);
  }

  .btn-outline:hover {
    background: var(--accent-light);
    border-color: var(--accent-dark);
  }

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

  .btn-accent:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
  }

  .btn-sm {
    height: 38px;
    padding: 0 18px;
    font-size: 14px;
  }

  .btn-lg {
    height: 52px;
    padding: 0 36px;
    font-size: 16px;
  }

  /* ========== Page Hero ========== */
  .page-hero {
    position: relative;
    padding: 140px 0 90px;
    background: linear-gradient(135deg, var(--dark) 0%, #16302a 60%, #1f4a38 100%);
    overflow: hidden;
  }

  .page-hero-bg {
    position: absolute;
    inset: 0;
    background: url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
    opacity: 0.16;
    pointer-events: none;
  }

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

  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 28px;
  }

  .breadcrumb a {
    color: rgba(255,255,255,0.7);
    transition: color 0.2s;
  }

  .breadcrumb a:hover {
    color: #fff;
  }

  .breadcrumb .sep {
    opacity: 0.5;
  }

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

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 40px;
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--accent);
    margin-bottom: 20px;
  }

  .page-hero h1 {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.02em;
    color: #fff;
    max-width: 660px;
    margin-bottom: 18px;
  }

  .hero-desc {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255,255,255,0.78);
    max-width: 600px;
    margin-bottom: 36px;
  }

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

  .hero-cta .btn-outline {
    border-color: rgba(255,255,255,0.5);
    color: #fff;
  }

  .hero-cta .btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
  }

  /* ========== Section ========== */
  .section {
    padding: 88px 0;
  }

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

  .section-dark {
    background: var(--dark);
    color: #fff;
  }

  .section-head {
    max-width: 680px;
    margin-bottom: 52px;
  }

  .section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  .section-head.light h2 {
    color: #fff;
  }

  .section-head.light .section-desc {
    color: rgba(255,255,255,0.7);
  }

  .eyebrow {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
  }

  .section-head h2 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.02em;
    color: var(--text);
    margin-bottom: 14px;
  }

  .section-desc {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.75;
  }

  /* ========== News List ========== */
  .news-list {
    border-top: 1px solid var(--border);
  }

  .news-item {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 28px;
    padding: 34px 0;
    border-bottom: 1px solid var(--border);
    align-items: center;
    transition: background 0.2s ease;
  }

  .news-item:hover .news-thumb img {
    transform: scale(1.04);
  }

  .news-thumb {
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--primary-light);
  }

  .news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
  }

  .news-body h3 {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 10px;
  }

  .news-body h3 a {
    color: var(--text);
    transition: color 0.2s;
  }

  .news-body h3 a:hover {
    color: var(--primary);
  }

  .news-body p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 14px;
  }

  .news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--text-light);
  }

  .news-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 600;
    font-size: 13px;
    transition: gap 0.2s;
  }

  .news-link:hover {
    gap: 10px;
    color: var(--accent-dark);
  }

  .news-top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
  }

  .tag {
    display: inline-flex;
    align-items: center;
    padding: 3px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    background: var(--accent-light);
    color: var(--accent-dark);
    letter-spacing: 0.04em;
  }

  .section-footer {
    margin-top: 36px;
    text-align: center;
  }

  .text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 8px;
    transition: background 0.2s, gap 0.2s;
  }

  .text-link:hover {
    background: var(--primary-light);
    gap: 12px;
  }

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

  .feature-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 34px 28px;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }

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

  .feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 20px;
    transition: background 0.25s, color 0.25s;
  }

  .feature-card:hover .feature-icon {
    background: var(--primary);
    color: #fff;
  }

  .feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
  }

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

  /* ========== Column Cards ========== */
  .column-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
  }

  .column-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px 24px 24px;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }

  .column-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    opacity: 0;
    transition: opacity 0.25s;
  }

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

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

  .column-icon {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 18px;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .column-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
  }

  .column-card p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 18px;
    line-height: 1.65;
  }

  .column-card a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    transition: gap 0.2s;
  }

  .column-card a:hover {
    gap: 10px;
  }

  /* ========== Process ========== */
  .process-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    align-items: stretch;
    gap: 28px;
    margin-bottom: 48px;
  }

  .process-step {
    text-align: center;
    padding: 10px 0;
  }

  .step-num {
    font-size: 14px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 0.12em;
    margin-bottom: 14px;
  }

  .process-step h3 {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
  }

  .process-step p {
    font-size: 13px;
    color: rgba(255,255,255,0.62);
    line-height: 1.65;
    max-width: 220px;
    margin: 0 auto;
  }

  .process-line {
    width: 1px;
    background: rgba(255,255,255,0.12);
    position: relative;
    align-self: center;
    height: 56px;
  }

  .process-line::after {
    content: "";
    position: absolute;
    right: -3px;
    top: 50%;
    transform: translateY(-50%);
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
  }

  .dark-cta {
    text-align: center;
  }

  /* ========== FAQ ========== */
  .faq-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 64px;
    align-items: start;
  }

  .faq-left h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 14px;
  }

  .faq-left p {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 28px;
    line-height: 1.75;
  }

  .faq-contact {
    border-top: 1px solid var(--border);
    padding-top: 24px;
  }

  .faq-contact p {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 14px;
    margin-bottom: 0;
  }

  .faq-contact .btn {
    width: 100%;
  }

  .faq-list {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    overflow: hidden;
  }

  .faq-item {
    border-bottom: 1px solid var(--border);
  }

  .faq-item:last-child {
    border-bottom: none;
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    text-align: left;
    transition: background 0.2s;
  }

  .faq-question:hover {
    background: var(--bg);
  }

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

  .faq-icon::before,
  .faq-icon::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--text-light);
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  .faq-icon::before {
    width: 14px;
    height: 2px;
  }

  .faq-icon::after {
    width: 2px;
    height: 14px;
  }

  .faq-item.active .faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
    opacity: 0;
  }

  .faq-item.active .faq-question {
    color: var(--primary);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .faq-item.active .faq-answer {
    max-height: 320px;
  }

  .faq-answer p {
    padding: 0 24px 22px;
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.75;
  }

  /* ========== CTA ========== */
  .section-cta {
    padding-top: 0;
  }

  .cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
    border-radius: 18px;
    padding: 48px 52px;
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
  }

  .cta-box::after {
    content: "";
    position: absolute;
    right: -80px;
    top: -80px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(194,161,111,0.14);
  }

  .cta-left h2 {
    font-size: 27px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
  }

  .cta-left p {
    font-size: 15px;
    color: rgba(255,255,255,0.75);
    max-width: 460px;
    position: relative;
    z-index: 1;
  }

  .cta-right {
    display: flex;
    flex-direction: column;
    gap: 14px;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
  }

  .cta-right .btn-outline {
    border-color: rgba(255,255,255,0.5);
    color: #fff;
  }

  .cta-right .btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
  }

  .contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 880px;
    margin: 0 auto;
  }

  .contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
  }

  .contact-item > i {
    font-size: 20px;
    color: var(--primary);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .contact-item h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
  }

  .contact-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
  }

  /* ========== Footer ========== */
  .site-footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 44px;
  }

  .footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
    font-size: 24px;
  }

  .footer-brand .logo span {
    color: var(--accent);
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.55);
    max-width: 280px;
  }

  .footer-col h3 {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #fff;
    margin-bottom: 18px;
  }

  .footer-col ul li {
    margin-bottom: 10px;
    font-size: 14px;
  }

  .footer-col ul a {
    color: rgba(255,255,255,0.55);
    transition: color 0.2s, padding-left 0.2s;
  }

  .footer-col ul a:hover {
    color: var(--accent);
    padding-left: 4px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
  }

  /* ========== Mobile Tabbar ========== */
  .mobile-tabbar {
    display: none;
  }

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

    .process-grid {
      grid-template-columns: 1fr;
      gap: 30px;
    }

    .process-line {
      display: none;
    }

    .process-step p {
      min-height: 0;
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }

    .cta-box {
      flex-direction: column;
      text-align: center;
      padding: 40px 32px;
    }

    .cta-left p {
      margin: 0 auto;
    }

    .cta-right {
      flex-direction: row;
    }
  }

  @media (max-width: 768px) {
    .section {
      padding: 60px 0;
    }

    .page-hero {
      padding: 110px 0 60px;
    }

    .page-hero h1 {
      font-size: 30px;
    }

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

    .section-head h2 {
      font-size: 25px;
    }

    .news-item {
      grid-template-columns: 1fr;
      gap: 18px;
    }

    .news-thumb {
      aspect-ratio: 16 / 9;
    }

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

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

    .faq-layout {
      grid-template-columns: 1fr;
      gap: 40px;
    }

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

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

    .menu-toggle {
      display: flex;
    }

    .main-nav {
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-lg);
      transform: translateY(-16px);
      opacity: 0;
      visibility: hidden;
      transition: all 0.25s ease;
      padding: 12px 24px;
    }

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

    .main-nav ul {
      flex-direction: column;
      gap: 4px;
    }

    .main-nav a {
      padding: 12px 16px;
      font-size: 15px;
    }

    .main-nav a.active::after {
      left: 16px;
      width: 20px;
    }

    .btn-nav {
      display: none;
    }

    .cta-box {
      padding: 32px 24px;
    }

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

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

    .cta-right .btn {
      width: 100%;
    }

    .mobile-tabbar {
      display: flex;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 60px;
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-top: 1px solid var(--border);
      z-index: 200;
      padding-bottom: env(safe-area-inset-bottom);
    }

    .mobile-tabbar .tab-item {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 3px;
      font-size: 11px;
      color: var(--text-light);
      transition: color 0.2s, transform 0.2s;
    }

    .mobile-tabbar .tab-item i {
      font-size: 17px;
    }

    .mobile-tabbar .tab-item.active {
      color: var(--primary);
      font-weight: 600;
      transform: scale(1.02);
    }

    body {
      padding-bottom: 60px;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding-left: 18px;
      padding-right: 18px;
    }

    .page-hero h1 {
      font-size: 26px;
    }

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

    .hero-cta .btn {
      width: 100%;
    }

    .news-meta {
      flex-direction: column;
      align-items: flex-start;
    }

    .contact-item {
      flex-direction: column;
      align-items: flex-start;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation: none !important;
      transition: none !important;
    }
    html {
      scroll-behavior: auto;
    }
  }

/* roulang page: category4 */
:root {
            --color-primary: #1F4A38;
            --color-primary-hover: #17362A;
            --color-primary-light: #EAF0EC;
            --color-accent: #C2A16F;
            --color-accent-light: #F2EBDF;
            --color-bg: #F7F4EF;
            --color-text: #211C17;
            --color-text-secondary: #6D6A63;
            --color-border: #E4DED3;
            --color-dark: #101714;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(16, 23, 20, .06);
            --shadow-lg: 0 12px 32px rgba(16, 23, 20, .10);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: var(--color-primary-hover);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-dark {
            background: var(--color-dark);
            color: rgba(255, 255, 255, .85);
        }
        .section-dark h2 {
            color: #fff;
        }
        .eyebrow {
            display: inline-block;
            font-size: 13px;
            letter-spacing: .08em;
            color: var(--color-accent);
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .eyebrow.light {
            color: #D9C4A2;
        }
        .section-head {
            margin-bottom: 48px;
            max-width: 640px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        h1,
        h2,
        h3 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-text);
        }
        h1 {
            font-size: 42px;
            font-weight: 800;
            letter-spacing: .02em;
        }
        h2 {
            font-size: 32px;
            margin-bottom: 16px;
        }
        h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }
        .text-accent {
            color: var(--color-accent);
        }
        .text-secondary {
            color: var(--color-text-secondary);
            font-size: 15px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .2s;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--color-accent);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-primary);
        }
        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .1);
            color: #fff;
        }
        .btn-sm {
            height: 38px;
            padding: 0 20px;
            font-size: 14px;
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(247, 244, 239, .88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            z-index: 100;
            transition: background .3s, border-color .3s, box-shadow .3s;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, .96);
            border-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(16, 23, 20, .05);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 24px;
        }
        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: .02em;
            display: flex;
            align-items: baseline;
            line-height: 1;
        }
        .logo span {
            color: var(--color-accent);
            font-size: 20px;
            margin-left: 2px;
        }
        .main-nav {
            flex: 1;
            display: flex;
            justify-content: flex-end;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 4px;
        }
        .main-nav a {
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            color: var(--color-text-secondary);
            font-weight: 500;
            border-radius: 6px;
            transition: color .2s, background .2s;
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: var(--color-primary-light);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
        }
        .menu-toggle span {
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: transform .3s, opacity .3s;
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* Hero Page */
        .hero-page {
            position: relative;
            padding: 160px 0 80px;
            min-height: 440px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--color-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: .35;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(16, 23, 20, .92) 0%, rgba(16, 23, 20, .55) 60%, rgba(16, 23, 20, .30) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .hero-page h1 {
            color: #fff;
            margin-bottom: 20px;
        }
        .hero-page p {
            color: rgba(255, 255, 255, .8);
            font-size: 17px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-page .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .7);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, .4);
        }
        /* About Intro */
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .about-text p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            line-height: 1.8;
            max-width: 480px;
        }
        .about-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 420px;
            object-fit: cover;
            border: 1px solid var(--color-border);
        }
        .about-stats {
            display: flex;
            gap: 40px;
            margin-top: 36px;
            border-top: 1px solid var(--color-border);
            padding-top: 28px;
        }
        .stat-item .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
        }
        .stat-item .stat-unit {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent);
            margin-left: 2px;
        }
        .stat-item .stat-label {
            display: block;
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-top: 6px;
        }
        /* Values Cards */
        .values-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .value-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: transform .2s, box-shadow .2s;
            position: relative;
        }
        .value-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .value-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--color-primary);
        }
        .value-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .value-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 32px;
            max-width: 800px;
            margin: 0 auto;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--color-accent), var(--color-primary));
        }
        .timeline-item {
            position: relative;
            padding-bottom: 48px;
            padding-left: 24px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -28px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--color-accent);
        }
        .timeline-year {
            font-size: 20px;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 4px;
            letter-spacing: .02em;
        }
        .timeline-title {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .timeline-text {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        /* Team Dark Section */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 48px;
        }
        .team-card {
            border: 1px solid rgba(255, 255, 255, .10);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            background: rgba(255, 255, 255, .03);
            transition: background .2s, border-color .2s;
        }
        .team-card:hover {
            background: rgba(255, 255, 255, .06);
            border-color: rgba(194, 161, 111, .4);
        }
        .team-card h3 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 10px;
        }
        .team-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            line-height: 1.7;
        }
        .team-card .team-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-accent);
            display: block;
            margin-bottom: 16px;
            line-height: 1;
        }
        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            margin-top: 48px;
        }
        .process-step {
            position: relative;
            padding-top: 24px;
        }
        .process-step .step-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: .1em;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .process-step .step-num::after {
            content: "";
            flex: 0 0 40px;
            height: 2px;
            background: var(--color-accent);
            opacity: .5;
        }
        .process-step h3 {
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        /* FAQ */
        .faq-layout {
            display: grid;
            grid-template-columns: .8fr 1.2fr;
            gap: 64px;
        }
        .faq-left h2 {
            margin-bottom: 16px;
        }
        .faq-left p {
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            font-size: 15px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #fff;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            transition: background .2s;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            background: transparent;
            border: none;
            text-align: left;
            width: 100%;
            transition: background .2s;
        }
        .faq-question:hover {
            background: var(--color-primary-light);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 300;
            color: var(--color-accent);
            transition: transform .3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
            padding: 0 24px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-secondary);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 20px;
        }
        /* CTA Box */
        .cta-box {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(194, 161, 111, .12);
        }
        .cta-box h2 {
            color: #fff;
            margin-bottom: 10px;
            font-size: 28px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, .8);
            font-size: 15px;
            max-width: 460px;
        }
        .cta-box .btn-primary {
            background: #fff;
            color: var(--color-primary);
        }
        .cta-box .btn-primary:hover {
            background: var(--color-accent-light);
            color: var(--color-primary);
        }
        .cta-box .btn-outline-light {
            border-color: rgba(255, 255, 255, .6);
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        /* Contact Info */
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 24px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
        }
        .contact-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--color-primary);
        }
        .contact-item h4 {
            font-size: 16px;
            margin-bottom: 4px;
        }
        .contact-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        /* Footer */
        .site-footer {
            background: var(--color-dark);
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 32px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, .65);
            transition: color .2s;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 10px;
            font-size: 14px;
        }
        .footer-bottom {
            padding-top: 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        /* Mobile Tabs */
        .mobile-tabs {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: rgba(255, 255, 255, .95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-top: 1px solid var(--color-border);
            z-index: 200;
            padding-bottom: env(safe-area-inset-bottom);
            box-shadow: 0 -2px 12px rgba(16, 23, 20, .04);
        }
        .mobile-tabs-inner {
            display: flex;
            height: 100%;
        }
        .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 11px;
            color: var(--color-text-secondary);
            transition: color .2s;
        }
        .tab-item svg {
            width: 20px;
            height: 20px;
            transition: transform .2s;
        }
        .tab-item.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .tab-item.active svg {
            transform: scale(1.1);
            color: var(--color-primary);
        }
        /* Fade Up */
        .fade-up {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity .5s ease, transform .5s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .fade-up {
                opacity: 1;
                transform: none;
                transition: none;
            }
            * {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
            }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .values-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .team-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }
            .about-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .about-visual img {
                height: 300px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            h1 {
                font-size: 30px;
            }
            h2 {
                font-size: 24px;
            }
            .hero-page {
                padding: 120px 0 60px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                padding: 16px 24px;
                box-shadow: 0 12px 32px rgba(16, 23, 20, .08);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav ul {
                flex-direction: column;
                width: 100%;
            }
            .main-nav a {
                padding: 12px 16px;
            }
            .header-actions .btn-sm {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .mobile-tabs {
                display: block;
            }
            body {
                padding-bottom: 60px;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 40px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-actions {
                justify-content: center;
            }
            .about-stats {
                gap: 24px;
            }
            .stat-item .stat-num {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .values-grid {
                grid-template-columns: 1fr;
            }
            .team-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .about-stats {
                flex-direction: column;
                gap: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .breadcrumb {
                font-size: 12px;
            }
        }