:root {
      --primary: #0f172a;
      --primary-light: #1e293b;
      --accent: #d97706;
      --accent-hover: #b45309;
      --accent-soft: #fef3c7;
      --text-main: #334155;
      --text-dark: #0f172a;
      --text-muted: #64748b;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
      --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
      --radius: 12px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      line-height: 1.6;
      color: var(--text-main);
      background-color: #e6ebff;
      background-image: url('https://sc02.alicdn.com/kf/Hd05ac0798d664645ba091fbfacff24763.jpg');
      background-repeat: repeat;
      background-attachment: fixed;
      background-size: cover;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1140px;
      margin: 0 auto;
      padding: 40px 20px;
    }

    /* Hero Section */
    .hero-banner {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      color: #ffffff;
      padding: 60px 40px;
      border-radius: var(--radius);
      margin-bottom: 40px;
      box-shadow: var(--shadow-lg);
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-banner::after {
      content: "";
      position: absolute;
      top: -50%;
      right: -20%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(217, 119, 6, 0.15) 0%, transparent 70%);
      border-radius: 50%;
    }

    .badge-pill {
      display: inline-block;
      background: rgba(217, 119, 6, 0.2);
      color: #fbbf24;
      border: 1px solid rgba(251, 191, 36, 0.4);
      font-size: 0.85rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 6px 16px;
      border-radius: 20px;
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 2.6rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 20px;
      line-height: 1.25;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: #cbd5e1;
      max-width: 820px;
      margin: 0 auto 30px;
      line-height: 1.7;
    }

    .trust-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 16px;
      margin-top: 35px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 30px;
    }

    .trust-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 16px;
      border-radius: 10px;
      text-align: center;
      backdrop-filter: blur(4px);
    }

    .trust-icon {
      font-size: 1.6rem;
      margin-bottom: 8px;
    }

    .trust-item h4 {
      font-size: 1rem;
      color: #ffffff;
      margin-bottom: 4px;
      font-weight: 700;
    }

    .trust-item p {
      font-size: 0.85rem;
      color: #94a3b8;
    }

    /* Section Styles */
    .section {
      background: var(--bg-white);
      border-radius: var(--radius);
      padding: 45px 35px;
      margin-bottom: 35px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
    }

    .section-header {
      text-align: center;
      margin-bottom: 35px;
    }

    .section-subtitle {
      color: var(--accent);
      font-size: 0.9rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.2px;
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 1.85rem;
      color: var(--text-dark);
      font-weight: 800;
      letter-spacing: -0.5px;
    }

    /* Why 3D Hero Showcase */
    .why3d-showcase {
      display: grid;
      grid-template-columns: 1.05fr 1fr;
      gap: 36px;
      align-items: center;
      margin-bottom: 35px;
    }

    .why3d-visuals {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .why3d-card {
      background: #ffffff;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
      border: 1px solid var(--border);
      aspect-ratio: 1 / 1;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .why3d-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
      display: block;
    }

    .why3d-card:hover img {
      transform: scale(1.05);
    }

    .why3d-side-tag {
      position: absolute;
      bottom: 12px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(15, 23, 42, 0.82);
      backdrop-filter: blur(4px);
      color: #ffffff;
      font-size: 0.72rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 20px;
      white-space: nowrap;
      letter-spacing: 0.5px;
      pointer-events: none;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
    }

    .why3d-content {
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .why3d-tag {
      display: inline-block;
      align-self: flex-start;
      background: #eef2ff;
      color: #4338ca;
      font-size: 0.75rem;
      font-weight: 800;
      letter-spacing: 1.2px;
      padding: 5px 14px;
      border-radius: 20px;
      margin-bottom: 14px;
      text-transform: uppercase;
    }

    .why3d-title {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .why3d-desc {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.65;
      margin-bottom: 22px;
    }

    .why3d-checklist {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .why3d-checklist li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-dark);
      line-height: 1.5;
    }

    .why3d-check {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--accent);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 1px;
    }

    .why3d-check svg {
      width: 13px;
      height: 13px;
      stroke: #ffffff;
      stroke-width: 3;
    }

    /* Features Grid */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .feature-card {
      background: var(--bg-light);
      padding: 20px 18px;
      border-radius: 10px;
      border: 1px solid var(--border);
      border-left: 4px solid var(--accent);
      display: flex;
      flex-direction: column;
    }

    .feature-card h3 {
      font-size: 1.05rem;
      color: var(--text-dark);
      margin-bottom: 10px;
      line-height: 1.35;
    }

    .feature-card p {
      font-size: 0.88rem;
      color: var(--text-main);
      line-height: 1.55;
    }

    /* Style Comparison */
    .comparison-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

    .comparison-card {
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 28px;
      background: var(--bg-white);
      position: relative;
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .comparison-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .comparison-card.highlight {
      border: 2px solid var(--accent);
      background: #fffdfa;
    }

    .popular-tag {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--accent);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 12px;
    }

    .comparison-card h3 {
      font-size: 1.3rem;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .comparison-tagline {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
      margin-bottom: 18px;
      display: block;
    }

    .comparison-list {
      list-style: none;
      font-size: 0.92rem;
    }

    .comparison-list li {
      margin-bottom: 10px;
      padding-left: 22px;
      position: relative;
      color: var(--text-main);
    }

    .comparison-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--accent);
      font-weight: bold;
    }

    /* Image Gallery */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: 20px;
    }

    .gallery-item {
      border-radius: 10px;
      overflow: hidden;
      border: 1px solid var(--border);
      background: var(--bg-white);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
      display: flex;
      flex-direction: column;
    }

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

    .gallery-img-wrap {
      width: 100%;
      aspect-ratio: 1 / 1;
      background-color: #f1f5f9;
      position: relative;
      overflow: hidden;
    }

    .gallery-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .gallery-info {
      padding: 14px 16px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .gallery-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
      line-height: 1.35;
    }

    .gallery-badge {
      display: inline-block;
      font-size: 0.75rem;
      color: var(--accent);
      background: var(--accent-soft);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      width: fit-content;
    }

    /* Specs Table */
    .specs-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 15px;
      font-size: 0.95rem;
    }

    .specs-table th,
    .specs-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border);
      text-align: left;
    }

    .specs-table th {
      background-color: #f8fafc;
      color: var(--text-dark);
      font-weight: 700;
      width: 25%;
    }

    .specs-table tr:hover {
      background-color: #fcfcfd;
    }

    .highlight-moq {
      display: inline-block;
      background: #fef2f2;
      color: #dc2626;
      border: 1px solid #fecaca;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 6px;
    }

    /* Steps */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }

    .step-box {
      background: var(--bg-light);
      padding: 24px;
      border-radius: 10px;
      border: 1px solid var(--border);
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 15px;
    }

    .step-box h4 {
      font-size: 1.05rem;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .step-box p {
      font-size: 0.9rem;
      color: var(--text-main);
      line-height: 1.5;
    }

    /* FAQ Accordion */
    .faq-container {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--border);
      border-radius: 8px;
      overflow: hidden;
      background: var(--bg-white);
    }

    .faq-question {
      padding: 18px 22px;
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-dark);
      font-size: 1.02rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-question::after {
      content: "+";
      font-size: 1.3rem;
      color: var(--accent);
      font-weight: 600;
    }

    .faq-answer {
      padding: 18px 22px;
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.7;
      border-top: 1px solid var(--border);
      background: var(--bg-white);
    }

    /* CTA Bottom */
    .cta-box {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      color: #ffffff;
      padding: 50px 30px;
      border-radius: var(--radius);
      text-align: center;
      margin-top: 40px;
    }

    .cta-box h2 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 15px;
    }

    .cta-box p {
      font-size: 1.05rem;
      color: #cbd5e1;
      max-width: 650px;
      margin: 0 auto 25px;
    }

    .btn-gold {
      display: inline-block;
      background: var(--accent);
      color: #ffffff;
      font-weight: 700;
      font-size: 1rem;
      padding: 14px 36px;
      border-radius: 8px;
      text-decoration: none;
      transition: background 0.2s, transform 0.2s;
    }

    .btn-gold:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
    }

    /* Option Grids (Plating, Edges, Packaging) */
    .option-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
      margin-top: 25px;
    }

    .option-grid.col-4 {
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .option-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 16px 12px;
      text-align: center;
      transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
      box-shadow: 0 1px 3px rgba(0,0,0,0.03);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
    }

    .option-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }

    .option-img-wrap {
      width: 100%;
      height: 110px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
    }

    .option-img-wrap img {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
      display: block;
    }

    .option-name {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-dark);
      line-height: 1.3;
    }

    @media (max-width: 992px) {
      .why3d-showcase {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .why3d-visuals {
        max-width: 520px;
        margin: 0 auto;
        width: 100%;
      }
      .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .option-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .option-grid.col-4 {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 576px) {
      .why3d-visuals {
        gap: 10px;
      }
      .why3d-title {
        font-size: 1.5rem;
      }
      .feature-grid {
        grid-template-columns: 1fr;
        gap: 14px;
      }
      .option-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .hero-title { font-size: 1.9rem; }
      .hero-desc { font-size: 1rem; }
      .section { padding: 30px 20px; }
      .specs-table th, .specs-table td { padding: 10px 12px; }
    }