:root {
      --primary-color: #f58320;
      --primary-light: #fff3e8;
      --accent-yellow: #ffb800;
      --text-main: #2d3142;
      --text-muted: #6c728a;
      --card-bg: rgba(255, 255, 255, 0.94);
      --card-border: rgba(255, 255, 255, 0.8);
      --shadow-soft: 0 12px 35px rgba(60, 80, 140, 0.08);
      --shadow-hover: 0 16px 40px rgba(245, 131, 32, 0.15);
      --radius-lg: 20px;
      --radius-md: 14px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-main);
      background-color: #eaedff;
      background-image: url('https://sc02.alicdn.com/kf/H2b6f7411e6454797a49bb64f48d6e8beM.jpg');
      background-repeat: repeat;
      background-position: center top;
      background-attachment: fixed;
      line-height: 1.65;
      padding: 40px 20px 80px;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
    }

    /* Top Hero Header */
    .hero-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
      padding: 45px;
      margin-bottom: 40px;
      display: grid;
      grid-template-columns: 1.05fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .hero-visual {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
      background: #fff;
    }

    .hero-visual img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .hero-visual:hover img {
      transform: scale(1.03);
    }

    .hero-badge-tag {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(6px);
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-color);
      box-shadow: 0 4px 12px rgba(0,0,0,0.08);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .hero-content h1 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.25;
      color: #1e2235;
      margin-bottom: 12px;
    }

    .hero-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .feature-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 28px;
    }

    .pill {
      background: var(--primary-light);
      color: #c95c00;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      border: 1px solid rgba(245, 131, 32, 0.2);
    }

    .hero-highlights {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 28px;
    }

    .hero-highlights li {
      font-size: 14px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #3b4256;
    }

    .hero-highlights li::before {
      content: "✔";
      color: var(--primary-color);
      font-weight: bold;
      font-size: 14px;
      line-height: 1.4;
    }

    .material-notice-box {
      background: #f8faff;
      border-left: 4px solid #4a6bff;
      padding: 14px 18px;
      border-radius: 8px;
      font-size: 13px;
      color: #414a6b;
      line-height: 1.6;
    }

    .material-notice-box strong {
      color: #2b3970;
    }

    /* Section General */
    .section-title-wrap {
      text-align: center;
      margin: 50px 0 35px;
    }

    .section-tag {
      display: inline-block;
      text-transform: uppercase;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 1.5px;
      color: var(--primary-color);
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: #1e2235;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 650px;
      margin: 10px auto 0;
    }

    /* Specs Table Grid */
    .specs-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
      padding: 35px 45px;
      margin-bottom: 50px;
    }

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

    .spec-item {
      padding: 16px 20px;
      background: #ffffff;
      border-radius: 12px;
      border: 1px solid #f0f2fa;
    }

    .spec-label {
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      color: #8c93a8;
      letter-spacing: 0.5px;
      margin-bottom: 6px;
    }

    .spec-value {
      font-size: 15px;
      font-weight: 700;
      color: #222638;
    }

    .spec-note {
      font-size: 12px;
      color: #798196;
      margin-top: 4px;
    }

    /* 7-Step Macro Gallery */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
      margin-bottom: 50px;
    }

    .gallery-item {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

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

    .gallery-item.featured {
      grid-column: span 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
    }

    .gallery-img-box {
      position: relative;
      background: #f7f8fc;
      overflow: hidden;
    }

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

    .gallery-item:hover .gallery-img-box img {
      transform: scale(1.05);
    }

    .gallery-step-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(30, 34, 53, 0.85);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 12px;
      letter-spacing: 0.5px;
    }

    .gallery-info {
      padding: 26px 30px;
    }

    .gallery-info h3 {
      font-size: 19px;
      font-weight: 750;
      color: #1e2235;
      margin-bottom: 8px;
    }

    .gallery-info p {
      font-size: 14px;
      color: #555b70;
      line-height: 1.6;
      margin-bottom: 14px;
    }

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

    .tag-item {
      font-size: 11px;
      font-weight: 600;
      padding: 3px 10px;
      background: #eef2ff;
      color: #4353b3;
      border-radius: 6px;
    }

    /* Layer Anatomy Section */
    .anatomy-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
      padding: 45px;
      margin-bottom: 50px;
    }

    .layer-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 25px;
    }

    .layer-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 22px 18px;
      border: 1px solid #edf0f8;
      position: relative;
    }

    .layer-num {
      width: 28px;
      height: 28px;
      background: var(--primary-color);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .layer-title {
      font-size: 15px;
      font-weight: 700;
      color: #222638;
      margin-bottom: 6px;
    }

    .layer-desc {
      font-size: 13px;
      color: #6a7185;
      line-height: 1.5;
    }

    /* FAQ Section */
    .faq-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
      padding: 45px;
      margin-bottom: 40px;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 25px;
    }

    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 20px 24px;
      border: 1px solid #edf0f8;
    }

    .faq-q {
      font-size: 15px;
      font-weight: 750;
      color: #1e2235;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .faq-q::before {
      content: "Q";
      background: var(--primary-light);
      color: var(--primary-color);
      font-size: 12px;
      font-weight: 800;
      width: 22px;
      height: 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 4px;
    }

    .faq-a {
      font-size: 13.5px;
      color: #555b70;
      line-height: 1.6;
    }

    /* Footer Note */
    .footer-note {
      text-align: center;
      font-size: 13px;
      color: #7d859d;
      margin-top: 30px;
    }