/* roulang page: index */
:root {
      --primary-teal: #0F766E;
      --primary-dark: #0D5D57;
      --primary-light: #F0FDFA;
      --soft-cyan: #06B6D4;
      --warm-amber: #F59E0B;
      --amber-hover: #D97706;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark-slate: #042F2E;
      --bg-dark-case: #02201F;
      --border-color: #E2E8F0;
      --border-teal: #CCFBF1;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --shadow-sm: 0 1px 3px rgba(15, 118, 110, 0.05);
      --shadow-md: 0 4px 20px -2px rgba(15, 118, 110, 0.08);
      --shadow-lg: 0 10px 25px -5px rgba(15, 118, 110, 0.12);
      --transition: all 0.25s ease-in-out;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* Top Bar */
    .top-bar {
      background-color: #042F2E;
      color: #99F6E4;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-badge::before {
      content: "";
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10B981;
    }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      box-shadow: 0 2px 12px rgba(15, 118, 110, 0.06);
      border-bottom: 1px solid var(--border-color);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary-teal);
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      background: var(--primary-teal);
      color: #FFFFFF;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.2rem;
      box-shadow: 0 2px 8px rgba(15, 118, 110, 0.3);
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 24px;
      align-items: center;
    }
    .nav-item a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 6px 4px;
      position: relative;
    }
    .nav-item a:hover,
    .nav-item a.active {
      color: var(--primary-teal);
    }
    .nav-item a::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-teal);
      transition: var(--transition);
    }
    .nav-item a:hover::after,
    .nav-item a.active::after {
      width: 100%;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background-color: var(--primary-teal);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      box-shadow: 0 4px 12px rgba(15, 118, 110, 0.25);
    }
    .btn-outline {
      border-color: var(--primary-teal);
      color: var(--primary-teal);
      background: transparent;
    }
    .btn-outline:hover {
      background-color: var(--primary-light);
    }
    .btn-amber {
      background-color: var(--warm-amber);
      color: #FFFFFF;
    }
    .btn-amber:hover {
      background-color: var(--amber-hover);
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Section Global Headers */
    .section-padding {
      padding: 80px 0;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: var(--primary-light);
      color: var(--primary-teal);
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
      border: 1px solid var(--border-teal);
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* Section 1: Hero Carousel / Stage */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #042F2E 0%, #0F766E 100%);
      color: #FFFFFF;
      padding: 90px 0 100px;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.16;
      mix-blend-mode: overlay;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      color: #5EEAD4;
    }
    .hero-lead {
      font-size: 1.12rem;
      color: #CCFBF1;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 36px;
    }
    .hero-badge-pill {
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: var(--radius-full);
      padding: 6px 16px;
      font-size: 0.85rem;
      color: #FFFFFF;
      backdrop-filter: blur(4px);
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-card-stage {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(12px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    }
    .hero-stage-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 20px;
      position: relative;
    }
    .hero-stage-img-box img {
      width: 100%;
      height: 280px;
      object-fit: cover;
    }
    .hero-stage-status {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: rgba(4, 47, 46, 0.7);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
    }
    .pulse-dot {
      width: 10px;
      height: 10px;
      background-color: #10B981;
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    /* Section 2: Brand & Architecture */
    .architecture-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .arch-img-wrap {
      position: relative;
    }
    .arch-img-main {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .arch-img-main img {
      width: 100%;
      height: 440px;
      object-fit: cover;
    }
    .arch-card-overlay {
      position: absolute;
      bottom: -25px;
      right: -20px;
      background: var(--bg-white);
      padding: 20px 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      max-width: 260px;
    }
    .arch-points {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .arch-point-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }
    .point-badge {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-teal);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
      border: 1px solid var(--border-teal);
    }

    /* Section 3: 6 Card Grid */
    .card-grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 32px 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-teal);
    }
    .feature-icon-box {
      width: 54px;
      height: 54px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary-teal);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      border: 1px solid var(--border-teal);
    }
    .feature-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feature-desc {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Section 4: Hot Products Trio */
    .products-trio-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-box {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .product-box:hover {
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-teal);
    }
    .product-img-holder {
      height: 240px;
      overflow: hidden;
      position: relative;
      background: #F1F5F9;
    }
    .product-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-box:hover .product-img-holder img {
      transform: scale(1.05);
    }
    .product-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 118, 110, 0.9);
      color: #FFFFFF;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      font-size: 0.8rem;
      font-weight: 600;
    }
    .product-details {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-name {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .product-spec-list {
      list-style: none;
      margin: 16px 0 20px 0;
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 0.88rem;
      background: var(--bg-light);
      padding: 12px;
      border-radius: var(--radius-sm);
    }
    .product-spec-item {
      display: flex;
      justify-content: space-between;
      color: var(--text-muted);
    }
    .product-spec-item strong {
      color: var(--text-main);
    }

    /* Section 5: Dark Case & Technology */
    .dark-section {
      background: linear-gradient(180deg, #02201F 0%, #042F2E 100%);
      color: #FFFFFF;
    }
    .dark-section .section-title {
      color: #FFFFFF;
    }
    .dark-section .section-desc {
      color: #99F6E4;
    }
    .dark-showcase-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .dark-metric-cards {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }
    .dark-card {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      padding: 20px;
    }
    .dark-card-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #5EEAD4;
      margin-bottom: 8px;
    }
    .dark-card-desc {
      font-size: 0.88rem;
      color: #CCFBF1;
      line-height: 1.6;
    }
    .dark-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .dark-img-box img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* Section 6: Family Scenarios & Stories */
    .scenario-grid {
      display: flex;
      flex-direction: column;
      gap: 36px;
    }
    .scenario-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .scenario-item.reverse {
      direction: rtl;
    }
    .scenario-item.reverse .scenario-text {
      direction: ltr;
    }
    .scenario-item.reverse .scenario-media {
      direction: ltr;
    }
    .scenario-tag-label {
      font-size: 0.85rem;
      color: var(--primary-teal);
      font-weight: 700;
      margin-bottom: 6px;
      display: block;
    }
    .scenario-title {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .scenario-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .scenario-media {
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 260px;
    }
    .scenario-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* Section 7: Key Metrics Trust Bar */
    .trust-bar-section {
      background: var(--primary-teal);
      color: #FFFFFF;
      padding: 50px 0;
    }
    .trust-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-value {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 8px;
      color: #A7F3D0;
    }
    .metric-title {
      font-size: 1rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 4px;
    }
    .metric-subtitle {
      font-size: 0.85rem;
      color: #CCFBF1;
    }

    /* Section 8: Reviews Wall */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: var(--warm-amber);
      font-size: 1.1rem;
      margin-bottom: 10px;
    }
    .review-content {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-teal);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .reviewer-name {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-meta {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* Section 9: Health Articles Wall */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .article-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .article-thumb {
      height: 200px;
      overflow: hidden;
    }
    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }
    .article-card:hover .article-thumb img {
      transform: scale(1.05);
    }
    .article-body {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .article-meta-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 10px;
    }
    .article-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .article-snippet {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    /* Section 10: FAQ Accordion */
    .faq-container {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: var(--primary-teal);
    }
    .faq-summary {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-arrow {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-teal);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      transition: transform 0.25s ease;
    }
    details[open] .faq-arrow {
      transform: rotate(180deg);
      background: var(--primary-teal);
      color: #FFFFFF;
    }
    .faq-content {
      padding: 0 24px 22px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      border-top: 1px dashed var(--border-teal);
      padding-top: 16px;
    }

    /* Section 11: Warranty & Promises */
    .warranty-section {
      background: #F0FDFA;
      border-top: 1px solid var(--border-teal);
      border-bottom: 1px solid var(--border-teal);
      padding: 60px 0;
    }
    .warranty-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .warranty-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      background: var(--bg-white);
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(15, 118, 110, 0.15);
    }
    .warranty-icon {
      width: 44px;
      height: 44px;
      flex-shrink: 0;
      background: var(--primary-light);
      border: 1px solid var(--border-teal);
      color: var(--primary-teal);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: bold;
    }
    .warranty-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .warranty-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Section 12: Bottom CTA */
    .cta-section {
      background: linear-gradient(135deg, #0F766E 0%, #042F2E 100%);
      color: #FFFFFF;
      padding: 85px 0;
    }
    .cta-card-main {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 48px;
      backdrop-filter: blur(8px);
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .cta-text-side h2 {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 18px;
    }
    .cta-text-side p {
      color: #CCFBF1;
      font-size: 1.05rem;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .cta-feature-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .cta-pill {
      background: rgba(255, 255, 255, 0.12);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      color: #E2E8F0;
    }
    .cta-form-box {
      background: var(--bg-white);
      color: var(--text-main);
      padding: 30px;
      border-radius: var(--radius-md);
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    }
    .cta-form-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--primary-teal);
    }
    .cta-form-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 18px;
    }
    .cta-form-group {
      margin-bottom: 14px;
    }
    .cta-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 6px;
    }
    .cta-input, .cta-select {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      transition: var(--transition);
    }
    .cta-input:focus, .cta-select:focus {
      outline: none;
      border-color: var(--primary-teal);
      box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
    }
    .cta-btn-submit {
      width: 100%;
      padding: 12px;
      background: var(--warm-amber);
      color: #FFFFFF;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      margin-top: 8px;
    }
    .cta-btn-submit:hover {
      background: var(--amber-hover);
    }

    /* Footer */
    .site-footer {
      background: #0F172A;
      color: #94A3B8;
      padding: 70px 0 30px;
      font-size: 0.92rem;
      border-top: 4px solid var(--primary-teal);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h3 {
      font-size: 1.3rem;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      color: #94A3B8;
      font-size: 0.9rem;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      color: #FFFFFF;
      font-weight: 600;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col h4::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--soft-cyan);
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #5EEAD4;
      padding-left: 4px;
    }
    .footer-contact-item {
      display: flex;
      gap: 10px;
      margin-bottom: 12px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 26px;
      text-align: center;
      font-size: 0.84rem;
      color: #64748B;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-bottom a {
      color: #94A3B8;
    }
    .footer-bottom a:hover {
      color: #5EEAD4;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-grid, .architecture-grid, .dark-showcase-grid, .cta-card-main {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .card-grid-6, .products-trio-grid, .reviews-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .trust-metrics-grid, .warranty-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-content h1 {
        font-size: 2.25rem;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu, .nav-action {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-menu.mobile-active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .card-grid-6, .products-trio-grid, .reviews-grid, .articles-grid, .warranty-grid {
        grid-template-columns: 1fr;
      }
      .scenario-item {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .scenario-item.reverse {
        direction: ltr;
      }
      .trust-metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .hero-content h1 {
        font-size: 1.95rem;
      }
      .cta-card-main {
        padding: 24px;
      }
    }

    @media (max-width: 480px) {
      .trust-metrics-grid {
        grid-template-columns: 1fr;
      }
      .dark-metric-cards {
        grid-template-columns: 1fr;
      }
    }