/* --------------------------------------------------
       CSS RESET & BASE VARIABLES (极致鲜亮风格)
       -------------------------------------------------- */
    :root {
      --primary: #2563eb;
      --primary-light: #3b82f6;
      --primary-glow: rgba(37, 99, 235, 0.16);
      --accent-cyan: #06b6d4;
      --accent-purple: #8b5cf6;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --accent-rose: #f43f5e;
      --text-main: #0f172a;
      --text-sub: #334155;
      --text-muted: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --border-light: #e2e8f0;
      --border-focus: #93c5fd;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px rgba(37, 99, 235, 0.08);
      --shadow-lg: 0 16px 36px rgba(37, 99, 235, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --container-max: 1200px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      background-color: var(--bg-page);
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background: radial-gradient(100% 80% at 50% 0%, #e0f2fe 0%, #f8fafc 40%, #ffffff 100%);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    /* --------------------------------------------------
       LAYOUT CONTAINERS
       -------------------------------------------------- */
    .site-container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    .section-spacing {
      padding: 5rem 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 3.5rem auto;
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.35rem 0.9rem;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      background: #eff6ff;
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-full);
      margin-bottom: 1rem;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 0.85rem;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* --------------------------------------------------
       HEADER & NAVIGATION
       -------------------------------------------------- */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 16px rgba(15, 23, 42, 0.03);
    }

    .navbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    /* Prompt rule: .nav-links gap must be 0 */
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
      margin: 0;
      padding: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 0.55rem 0.85rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-sub);
      border-radius: var(--radius-sm);
      position: relative;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: #eff6ff;
    }

    .nav-cta-group {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      padding: 0.65rem 1.4rem;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, #1d4ed8 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(37, 99, 235, 0.45);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      border-color: #cbd5e1;
      color: var(--text-sub);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #f8fafc;
    }

    .btn-accent {
      background: linear-gradient(135deg, #06b6d4 0%, #0284c7 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(6, 182, 212, 0.45);
      color: #ffffff;
    }

    .menu-toggle-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 0.45rem;
      cursor: pointer;
      color: var(--text-main);
    }

    /* --------------------------------------------------
       HERO SECTION (Strictly NO IMAGES, Pure CSS/Vector)
       -------------------------------------------------- */
    .hero-section {
      padding: 4.5rem 0 5.5rem;
      position: relative;
      overflow: hidden;
      background: linear-gradient(180deg, rgba(239, 246, 255, 0.7) 0%, rgba(248, 250, 252, 0.95) 100%);
      border-bottom: 1px solid rgba(226, 232, 240, 0.7);
    }

    .hero-decor-circle {
      position: absolute;
      width: 450px;
      height: 450px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(6, 182, 212, 0.18) 0%, rgba(255, 255, 255, 0) 70%);
      top: -120px;
      right: -80px;
      pointer-events: none;
      z-index: 0;
    }

    .hero-decor-square {
      position: absolute;
      width: 380px;
      height: 380px;
      border-radius: 38%;
      background: radial-gradient(circle, rgba(139, 92, 246, 0.14) 0%, rgba(255, 255, 255, 0) 70%);
      bottom: -100px;
      left: -100px;
      pointer-events: none;
      z-index: 0;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.45rem 1.1rem;
      background: #ffffff;
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-full);
      box-shadow: 0 2px 10px rgba(37, 99, 235, 0.08);
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 1.5rem;
      animation: pulseGlow 3s infinite;
    }

    @keyframes pulseGlow {
      0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.2); }
      50% { box-shadow: 0 0 0 8px rgba(37, 99, 235, 0); }
    }

    /* H1 constrained under 20 chars */
    .hero-title {
      font-size: 2.85rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 1.25rem;
    }

    .hero-title span {
      background: linear-gradient(135deg, #1d4ed8 0%, #06b6d4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.2rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 2.5rem;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-box {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 1.25rem;
      flex-wrap: wrap;
      margin-bottom: 3.5rem;
    }

    .hero-official-btn {
      font-size: 1.15rem;
      padding: 0.9rem 2.5rem;
      font-weight: 700;
      background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
      color: #ffffff;
      border-radius: var(--radius-full);
      box-shadow: 0 10px 24px rgba(37, 99, 235, 0.35);
      border: none;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }

    .hero-official-btn:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 30px rgba(6, 182, 212, 0.45);
      color: #ffffff;
    }

    .hero-stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.25rem;
      margin-top: 1.5rem;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-md);
      padding: 1.4rem 1rem;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }

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

    .stat-num {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 0.25rem;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.15rem;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* --------------------------------------------------
       COMMON CARD & GRID STYLES
       -------------------------------------------------- */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

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

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

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 2rem 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #bfdbfe;
    }

    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
      background: #eff6ff;
      color: var(--primary);
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }

    .card-desc {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }

    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      margin-top: auto;
    }

    .tag {
      font-size: 0.78rem;
      padding: 0.2rem 0.55rem;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      color: var(--text-muted);
      font-weight: 500;
    }

    /* --------------------------------------------------
       SUPPORTED MODELS TICKER & MATRIX
       -------------------------------------------------- */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 0.65rem;
      justify-content: center;
      margin-top: 1.5rem;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 0.45rem 1rem;
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-sub);
      box-shadow: 0 1px 4px rgba(0,0,0,0.03);
      transition: var(--transition);
    }

    .model-chip:hover {
      border-color: var(--primary-light);
      color: var(--primary);
      background: #eff6ff;
      transform: translateY(-2px);
    }

    /* --------------------------------------------------
       ONE-STOP PRODUCTION SCENARIOS (Tabular / Grid)
       -------------------------------------------------- */
    .scene-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 1.6rem;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .scene-header {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-bottom: 0.85rem;
    }

    .scene-badge {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.2rem 0.5rem;
      border-radius: var(--radius-sm);
      background: #ecfeff;
      color: #0891b2;
      border: 1px solid #cffafe;
    }

    .scene-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .scene-content {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* --------------------------------------------------
       COMPARISON & BENCHMARK TABLE
       -------------------------------------------------- */
    .eval-highlight-box {
      background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      margin-bottom: 2.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2rem;
      flex-wrap: wrap;
    }

    .eval-score-area {
      display: flex;
      align-items: center;
      gap: 1.5rem;
    }

    .eval-big-score {
      font-size: 3.5rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 1.4rem;
      margin-bottom: 0.35rem;
    }

    .eval-score-text h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 0.25rem;
    }

    .eval-score-text p {
      font-size: 0.95rem;
      color: #cbd5e1;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .eval-table th, .eval-table td {
      padding: 1.15rem 1.4rem;
      border-bottom: 1px solid var(--border-light);
      font-size: 0.95rem;
    }

    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .eval-table tr:last-child td {
      border-bottom: none;
    }

    .eval-table .col-ideal {
      background: #eff6ff;
      color: var(--primary);
      font-weight: 700;
    }

    .eval-check {
      color: var(--accent-emerald);
      font-weight: bold;
      margin-right: 0.3rem;
    }

    .eval-cross {
      color: #ef4444;
      font-weight: bold;
      margin-right: 0.3rem;
    }

    /* --------------------------------------------------
       TOKEN PRICE MATRIX
       -------------------------------------------------- */
    .price-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

    .price-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 2.2rem 1.75rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }

    .price-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-md);
    }

    .price-card-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.75rem;
      border-radius: var(--radius-full);
    }

    .price-plan-name {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }

    .price-cost {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--primary);
      margin: 1rem 0;
      display: flex;
      align-items: baseline;
      gap: 0.3rem;
    }

    .price-cost small {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 450;
    }

    .price-list {
      list-style: none;
      margin: 1.5rem 0;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      font-size: 0.92rem;
      color: var(--text-sub);
    }

    .price-list li {
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    /* --------------------------------------------------
       CASES & BANNERS (Compliant with required banner images)
       -------------------------------------------------- */
    .banner-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      margin-bottom: 2.5rem;
    }

    .banner-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .banner-item .ai-page-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }

    .case-details-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 1.75rem;
    }

    .case-media-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      background: #ffffff;
    }

    .case-media-box img {
      width: 100%;
      height: 280px;
      object-fit: cover;
    }

    .case-info-padding {
      padding: 1.25rem 1.5rem;
    }

    /* --------------------------------------------------
       USER REVIEWS (6 distinct customer personas)
       -------------------------------------------------- */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

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

    .review-user-header {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      margin-bottom: 1rem;
    }

    .review-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
      color: #ffffff;
      font-weight: 700;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .review-meta h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .review-meta p {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .review-stars {
      color: #f59e0b;
      font-size: 0.9rem;
      margin-bottom: 0.75rem;
    }

    .review-body {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* --------------------------------------------------
       FAQ ACCORDION
       -------------------------------------------------- */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: #bfdbfe;
      box-shadow: var(--shadow-sm);
    }

    .faq-trigger {
      width: 100%;
      padding: 1.3rem 1.5rem;
      text-align: left;
      background: transparent;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      gap: 1rem;
    }

    .faq-icon-arrow {
      transition: transform 0.3s ease;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      background: #fcfdfe;
    }

    .faq-content-inner {
      padding: 0 1.5rem 1.3rem 1.5rem;
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* --------------------------------------------------
       CONTACT & DEMAND FORM
       -------------------------------------------------- */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 2.5rem;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 2.5rem;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-col {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
    }

    .contact-icon-circle {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      flex-shrink: 0;
    }

    .contact-text h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.2rem;
    }

    .contact-text p, .contact-text a {
      font-size: 0.95rem;
      color: var(--text-sub);
    }

    .contact-qr-card {
      margin-top: 1rem;
      padding: 1.25rem;
      background: #f8fafc;
      border-radius: var(--radius-md);
      display: inline-flex;
      align-items: center;
      gap: 1.25rem;
      border: 1px dashed #cbd5e1;
    }

    .contact-qr-card img {
      width: 100px;
      height: 100px;
      border-radius: 8px;
      object-fit: cover;
      background: #ffffff;
      padding: 4px;
      border: 1px solid #e2e8f0;
    }

    .form-box {
      display: flex;
      flex-direction: column;
      gap: 1.15rem;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 0.8rem 1rem;
      font-size: 0.95rem;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      outline: none;
      transition: var(--transition);
      background: #f8fafc;
      font-family: inherit;
    }

    .form-control:focus {
      background: #ffffff;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* --------------------------------------------------
       ARTICLES & FRIENDLY LINKS
       -------------------------------------------------- */
    .article-links-container {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      margin-bottom: 2rem;
    }

    .article-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 0.85rem;
      margin-top: 0.75rem;
      list-style: none;
    }

    .article-links-list a {
      color: var(--primary);
      font-size: 0.9rem;
      background: #eff6ff;
      padding: 0.35rem 0.8rem;
      border-radius: var(--radius-sm);
      border: 1px solid #dbeafe;
    }

    .article-links-list a:hover {
      background: var(--primary);
      color: #ffffff;
    }

    .friend-links-box {
      background: #f1f5f9;
      border-radius: var(--radius-md);
      padding: 1.25rem 1.5rem;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    .friend-links-box a {
      color: var(--text-sub);
      font-weight: 500;
      transition: var(--transition);
    }

    .friend-links-box a:hover {
      color: var(--primary);
    }

    /* --------------------------------------------------
       FOOTER (Clear contrast, crisp light slate)
       -------------------------------------------------- */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-light);
      padding: 3.5rem 0 2rem;
      color: var(--text-sub);
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2.5rem;
      margin-bottom: 2.5rem;
    }

    .footer-col h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 1.2rem;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
      font-size: 0.92rem;
    }

    .footer-col ul li a {
      color: var(--text-muted);
    }

    .footer-col ul li a:hover {
      color: var(--primary);
    }

    .footer-bottom-bar {
      border-top: 1px solid var(--border-light);
      padding-top: 1.75rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.88rem;
      color: var(--text-muted);
      flex-wrap: wrap;
      gap: 1rem;
    }

    /* --------------------------------------------------
       FLOATING ACTIONS
       -------------------------------------------------- */
    .float-dock {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      transition: var(--transition);
      font-size: 1.25rem;
      text-decoration: none;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
      box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
    }

    /* --------------------------------------------------
       RESPONSIVE BREAKPOINTS
       -------------------------------------------------- */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.3rem; }
      .grid-4, .hero-stat-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3, .price-grid, .banner-gallery, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .case-details-grid { grid-template-columns: 1fr; }
      .footer-top-grid { grid-template-columns: 1fr 1fr; }
      .contact-wrapper { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .navbar { height: 64px; }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        border-bottom: 1px solid var(--border-light);
        padding: 1rem 0;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active { display: flex; }
      .nav-links li { width: 100%; text-align: center; }
      .nav-links li a { display: block; padding: 0.8rem 1rem; }
      .menu-toggle-btn { display: inline-flex; }
      .nav-cta-group .btn-outline { display: none; }
      .hero-title { font-size: 1.95rem; }
      .hero-lead { font-size: 1.05rem; }
      .grid-3, .grid-4, .price-grid, .banner-gallery, .review-grid, .hero-stat-grid, .grid-2 { grid-template-columns: 1fr; }
      .footer-top-grid { grid-template-columns: 1fr; }
      .eval-highlight-box { flex-direction: column; align-items: flex-start; }
      .eval-score-area { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    }