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

    :root {
      --bg-deep: #0a0e1a;
      --bg-dark: #0f1424;
      --bg-card: #151c32;
      --bg-card-hover: #1a2340;
      --primary: #6c3cff;
      --primary-light: #8b5cff;
      --accent-cyan: #00d4ff;
      --accent-pink: #ff3d9a;
      --accent-lime: #b6ff3d;
      --text-light: #eef1ff;
      --text-muted: #9aa4c0;
      --text-dim: #6b7699;
      --gradient-laser: linear-gradient(135deg, #6c3cff 0%, #00d4ff 40%, #ff3d9a 80%, #b6ff3d 100%);
      --gradient-card: linear-gradient(145deg, rgba(108,60,255,0.15), rgba(0,212,255,0.05));
      --border-glow: rgba(108,60,255,0.35);
      --shadow-soft: 0 8px 32px rgba(0,0,0,0.45);
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-sm: 10px;
    }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 80px;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

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

    .container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ========== 顶部导航 ========== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(10,14,26,0.82);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(108,60,255,0.2);
      transition: background 0.3s;
    }

    .header-inner {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .logo-area img {
      height: 38px;
      width: auto;
      border-radius: 8px;
    }

    .logo-text {
      font-size: 19px;
      font-weight: 800;
      background: var(--gradient-laser);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: 0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
      flex-wrap: wrap;
    }

    .nav-links li a {
      display: block;
      padding: 8px 13px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 8px;
      transition: color 0.25s, background 0.25s;
      white-space: nowrap;
    }

    .nav-links li a:hover {
      color: #fff;
      background: rgba(108,60,255,0.18);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 22px;
      font-size: 14px;
      font-weight: 700;
      color: #fff;
      background: var(--gradient-laser);
      border-radius: 40px;
      transition: transform 0.25s, box-shadow 0.25s;
      white-space: nowrap;
      flex-shrink: 0;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(108,60,255,0.5);
    }

    .mobile-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: #fff;
      border-radius: 2px;
      transition: transform 0.3s, opacity 0.3s;
    }

    .mobile-toggle.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .mobile-toggle.active span:nth-child(2) {
      opacity: 0;
    }
    .mobile-toggle.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* ========== Hero 首屏（无图片） ========== */
    .hero {
      position: relative;
      padding: 150px 0 90px;
      overflow: hidden;
      background: radial-gradient(ellipse at 20% 0%, rgba(108,60,255,0.22) 0%, transparent 55%),
                  radial-gradient(ellipse at 85% 20%, rgba(0,212,255,0.12) 0%, transparent 50%),
                  radial-gradient(ellipse at 50% 100%, rgba(255,61,154,0.1) 0%, transparent 55%),
                  var(--bg-deep);
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(108,60,255,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108,60,255,0.06) 1px, transparent 1px);
      background-size: 64px 64px;
      mask-image: radial-gradient(ellipse at 50% 40%, rgba(0,0,0,0.9), transparent 75%);
      -webkit-mask-image: radial-gradient(ellipse at 50% 40%, rgba(0,0,0,0.9), transparent 75%);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 18px;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent-cyan);
      background: rgba(0,212,255,0.1);
      border: 1px solid rgba(0,212,255,0.3);
      border-radius: 40px;
      margin-bottom: 26px;
      letter-spacing: 0.4px;
    }

    .hero-badge .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-cyan);
      box-shadow: 0 0 10px var(--accent-cyan);
      animation: pulseDot 2s infinite;
    }

    @keyframes pulseDot {
      0%,100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.75); }
    }

    .hero h1 {
      font-size: clamp(30px, 5vw, 54px);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -0.5px;
      margin-bottom: 24px;
    }

    .hero h1 .gradient-text {
      background: var(--gradient-laser);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-desc {
      font-size: clamp(15px, 1.6vw, 18px);
      color: var(--text-muted);
      max-width: 680px;
      margin-bottom: 36px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 56px;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 15px 38px;
      font-size: 16px;
      font-weight: 800;
      color: #fff;
      background: var(--gradient-laser);
      background-size: 200% 200%;
      border: none;
      border-radius: 50px;
      cursor: pointer;
      transition: transform 0.25s, box-shadow 0.25s, background-position 0.4s;
      box-shadow: 0 6px 26px rgba(108,60,255,0.45);
      letter-spacing: 0.3px;
    }

    .btn-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 36px rgba(108,60,255,0.6);
      background-position: 100% 50%;
    }

    .btn-primary:active {
      transform: translateY(-1px) scale(0.99);
    }

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 34px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-light);
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.16);
      border-radius: 50px;
      cursor: pointer;
      transition: background 0.25s, border-color 0.25s, transform 0.25s;
    }

    .btn-ghost:hover {
      background: rgba(108,60,255,0.14);
      border-color: rgba(108,60,255,0.5);
      transform: translateY(-2px);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .stat-card {
      padding: 22px 20px;
      background: var(--gradient-card);
      border: 1px solid rgba(108,60,255,0.22);
      border-radius: var(--radius-md);
      transition: transform 0.3s, border-color 0.3s;
    }

    .stat-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0,212,255,0.45);
    }

    .stat-num {
      font-size: clamp(26px, 3vw, 36px);
      font-weight: 900;
      background: var(--gradient-laser);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* ========== 通用区块 ========== */
    .section {
      padding: 88px 0;
      position: relative;
    }

    .section-alt {
      background: var(--bg-dark);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 56px;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent-cyan);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: clamp(24px, 3.2vw, 38px);
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.3px;
    }

    .section-subtitle {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
    }

    .reveal {
      opacity: 0;
      transform: translateY(36px);
      transition: opacity 0.7s cubic-bezier(0.22,1,0.36,1), transform 0.7s cubic-bezier(0.22,1,0.36,1);
    }

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

    /* ========== 平台介绍 ========== */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .intro-text p {
      color: var(--text-muted);
      margin-bottom: 18px;
      font-size: 15.5px;
      line-height: 1.9;
    }

    .intro-text strong {
      color: var(--text-light);
    }

    .intro-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 28px;
    }

    .intro-feature {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--text-muted);
    }

    .intro-feature svg {
      flex-shrink: 0;
      margin-top: 3px;
    }

    .intro-visual {
      position: relative;
      padding: 32px;
      background: linear-gradient(145deg, rgba(108,60,255,0.14), rgba(0,212,255,0.06));
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
    }

    .intro-visual-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 13px;
    }

    .intro-pill {
      padding: 14px 16px;
      background: rgba(10,14,26,0.7);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      color: var(--text-light);
      transition: border-color 0.3s, transform 0.3s;
    }

    .intro-pill:hover {
      border-color: rgba(0,212,255,0.5);
      transform: translateY(-2px);
    }

    .intro-pill span {
      display: block;
      font-size: 11px;
      color: var(--text-dim);
      font-weight: 400;
      margin-top: 3px;
    }

    /* ========== 服务能力卡片 ========== */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card {
      padding: 30px 26px;
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: var(--radius-md);
      transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s, background 0.35s;
      position: relative;
      overflow: hidden;
    }

    .service-card::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--gradient-laser);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.4s;
    }

    .service-card:hover {
      transform: translateY(-6px);
      border-color: var(--border-glow);
      box-shadow: var(--shadow-soft);
      background: var(--bg-card-hover);
    }

    .service-card:hover::after {
      transform: scaleX(1);
    }

    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(145deg, rgba(108,60,255,0.3), rgba(0,212,255,0.12));
      border: 1px solid rgba(108,60,255,0.35);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .service-icon svg {
      width: 26px;
      height: 26px;
      stroke: var(--accent-cyan);
      fill: none;
      stroke-width: 1.7;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

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

    /* ========== 一站式场景 ========== */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .scene-card {
      padding: 24px 20px;
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: var(--radius-md);
      transition: transform 0.3s, border-color 0.3s;
    }

    .scene-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0,212,255,0.4);
    }

    .scene-card h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .scene-card h4::before {
      content: '';
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-cyan);
      flex-shrink: 0;
    }

    .scene-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* ========== 模型标签云 ========== */
    .model-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 980px;
      margin: 0 auto;
    }

    .model-tag {
      padding: 8px 16px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.09);
      border-radius: 40px;
      transition: color 0.25s, border-color 0.25s, background 0.25s, transform 0.25s;
    }

    .model-tag:hover {
      color: #fff;
      border-color: var(--accent-cyan);
      background: rgba(0,212,255,0.12);
      transform: translateY(-2px);
    }

    /* ========== 服务网络 ========== */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .network-card {
      padding: 26px 22px;
      background: var(--gradient-card);
      border: 1px solid rgba(108,60,255,0.2);
      border-radius: var(--radius-md);
      text-align: center;
      transition: transform 0.3s, border-color 0.3s;
    }

    .network-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0,212,255,0.45);
    }

    .network-num {
      font-size: 30px;
      font-weight: 900;
      background: var(--gradient-laser);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 4px;
    }

    .network-card h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .network-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* ========== 流程步骤 ========== */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      padding: 26px 20px;
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: var(--radius-md);
      position: relative;
      transition: transform 0.3s, border-color 0.3s;
    }

    .step-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-glow);
    }

    .step-num {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--gradient-laser);
      font-size: 16px;
      font-weight: 900;
      color: #fff;
      margin-bottom: 16px;
    }

    .step-card h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* ========== 案例 ========== */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .case-card {
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
    }

    .case-card:hover {
      transform: translateY(-6px);
      border-color: var(--border-glow);
      box-shadow: var(--shadow-soft);
    }

    .case-img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      background: linear-gradient(135deg, #1a1a2e, #16213e);
    }

    .case-body {
      padding: 24px 26px 28px;
    }

    .case-body h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .case-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 14px;
    }

    .case-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .case-meta span {
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 30px;
      background: rgba(108,60,255,0.15);
      color: var(--accent-cyan);
      border: 1px solid rgba(0,212,255,0.2);
    }

    /* ========== 对比评测 ========== */
    .compare-wrap {
      overflow-x: auto;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255,255,255,0.08);
      background: var(--bg-card);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 760px;
      font-size: 14px;
    }

    .compare-table thead {
      background: linear-gradient(90deg, rgba(108,60,255,0.28), rgba(0,212,255,0.14));
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .compare-table th {
      font-weight: 700;
      font-size: 14px;
      color: #fff;
      white-space: nowrap;
    }

    .compare-table td {
      color: var(--text-muted);
      vertical-align: top;
    }

    .compare-table tbody tr {
      transition: background 0.25s;
    }

    .compare-table tbody tr:hover {
      background: rgba(108,60,255,0.08);
    }

    .compare-table .highlight-cell {
      color: var(--accent-cyan);
      font-weight: 600;
    }

    .stars {
      color: #ffc93d;
      letter-spacing: 2px;
      font-size: 16px;
      white-space: nowrap;
    }

    .score-badge {
      display: inline-flex;
      align-items: baseline;
      gap: 4px;
      padding: 6px 16px;
      background: var(--gradient-laser);
      border-radius: 40px;
      font-weight: 900;
      color: #fff;
      font-size: 18px;
      margin-top: 8px;
    }

    .score-badge small {
      font-size: 12px;
      font-weight: 600;
      opacity: 0.85;
    }

    /* ========== 用户评论 ========== */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      padding: 28px 26px;
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: var(--radius-md);
      transition: transform 0.3s, border-color 0.3s;
      display: flex;
      flex-direction: column;
    }

    .review-card:hover {
      transform: translateY(-5px);
      border-color: var(--border-glow);
    }

    .review-stars {
      color: #ffc93d;
      font-size: 15px;
      letter-spacing: 2px;
      margin-bottom: 14px;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      flex: 1;
      margin-bottom: 20px;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .review-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(145deg, var(--primary), var(--accent-cyan));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
      color: #fff;
      flex-shrink: 0;
    }

    .review-info strong {
      display: block;
      font-size: 14px;
      font-weight: 700;
    }

    .review-info span {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* ========== 价格参考 ========== */
    .price-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .price-card {
      padding: 34px 28px;
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-lg);
      text-align: center;
      transition: transform 0.35s, border-color 0.35s, box-shadow 0.35s;
      position: relative;
    }

    .price-card.featured {
      border-color: var(--primary);
      background: linear-gradient(160deg, rgba(108,60,255,0.2), rgba(0,212,255,0.06));
      box-shadow: 0 0 40px rgba(108,60,255,0.25);
    }

    .price-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-soft);
    }

    .price-card.featured::before {
      content: '推荐';
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      padding: 4px 18px;
      font-size: 12px;
      font-weight: 700;
      background: var(--gradient-laser);
      border-radius: 30px;
      color: #fff;
      white-space: nowrap;
    }

    .price-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .price-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .price-amount {
      font-size: 40px;
      font-weight: 900;
      background: var(--gradient-laser);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1;
      margin-bottom: 4px;
    }

    .price-amount small {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      -webkit-text-fill-color: var(--text-muted);
    }

    .price-note {
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 24px;
    }

    .price-features {
      list-style: none;
      text-align: left;
      margin-bottom: 28px;
    }

    .price-features li {
      font-size: 13.5px;
      color: var(--text-muted);
      padding: 7px 0;
      display: flex;
      align-items: flex-start;
      gap: 9px;
    }

    .price-features li::before {
      content: '✓';
      color: var(--accent-lime);
      font-weight: 800;
      flex-shrink: 0;
    }

    .btn-price {
      display: block;
      width: 100%;
      padding: 12px;
      font-size: 14px;
      font-weight: 700;
      text-align: center;
      color: #fff;
      background: var(--gradient-laser);
      border: none;
      border-radius: 40px;
      cursor: pointer;
      transition: transform 0.25s, box-shadow 0.25s;
    }

    .btn-price:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(108,60,255,0.45);
    }

    /* ========== 文章列表 ========== */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-card {
      padding: 26px 24px;
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: var(--radius-md);
      transition: transform 0.3s, border-color 0.3s;
      display: flex;
      flex-direction: column;
    }

    .article-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-glow);
    }

    .article-tag {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      color: var(--accent-cyan);
      background: rgba(0,212,255,0.1);
      border: 1px solid rgba(0,212,255,0.25);
      padding: 3px 11px;
      border-radius: 30px;
      margin-bottom: 14px;
      align-self: flex-start;
    }

    .article-card h3 {
      font-size: 16px;
      font-weight: 700;
      line-height: 1.5;
      margin-bottom: 10px;
    }

    .article-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      flex: 1;
      margin-bottom: 14px;
    }

    .article-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--accent-cyan);
      transition: gap 0.25s;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .article-link:hover {
      gap: 9px;
    }

    /* ========== FAQ ========== */
    .faq-list {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.3s;
    }

    .faq-item.active {
      border-color: var(--border-glow);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      background: none;
      border: none;
      color: var(--text-light);
      font-size: 15.5px;
      font-weight: 600;
      text-align: left;
      cursor: pointer;
      font-family: inherit;
      transition: color 0.25s;
    }

    .faq-question:hover {
      color: var(--accent-cyan);
    }

    .faq-icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(108,60,255,0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--accent-cyan);
      transition: transform 0.3s, background 0.3s;
      line-height: 1;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: rgba(0,212,255,0.22);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s cubic-bezier(0.22,1,0.36,1);
    }

    .faq-answer-inner {
      padding: 0 24px 22px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.85;
    }

    /* ========== 表单 ========== */
    .form-wrap {
      max-width: 760px;
      margin: 0 auto;
      padding: 44px 40px;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      box-shadow: 0 0 60px rgba(108,60,255,0.1);
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 13.5px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-light);
    }

    .form-group label .req {
      color: var(--accent-pink);
      margin-left: 3px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      font-family: inherit;
      color: var(--text-light);
      background: rgba(10,14,26,0.7);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-sm);
      outline: none;
      transition: border-color 0.25s, box-shadow 0.25s;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(108,60,255,0.18);
    }

    .form-group textarea {
      resize: vertical;
      min-height: 110px;
    }

    .form-group select option {
      background: var(--bg-dark);
      color: var(--text-light);
    }

    .form-submit {
      width: 100%;
      padding: 15px;
      font-size: 16px;
      font-weight: 800;
      color: #fff;
      background: var(--gradient-laser);
      border: none;
      border-radius: 50px;
      cursor: pointer;
      transition: transform 0.25s, box-shadow 0.25s;
      margin-top: 6px;
      font-family: inherit;
      letter-spacing: 0.5px;
    }

    .form-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 30px rgba(108,60,255,0.5);
    }

    .form-submit:active {
      transform: translateY(0) scale(0.99);
    }

    /* ========== 加盟代理 ========== */
    .join-wrap {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 44px;
      align-items: center;
      padding: 48px 44px;
      background: linear-gradient(135deg, rgba(108,60,255,0.16), rgba(255,61,154,0.08));
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
    }

    .join-text h3 {
      font-size: clamp(22px, 2.6vw, 30px);
      font-weight: 900;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .join-text p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.85;
      margin-bottom: 24px;
    }

    .join-benefits {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .join-benefit {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 14px;
      color: var(--text-light);
    }

    .join-benefit svg {
      flex-shrink: 0;
      margin-top: 3px;
    }

    .join-visual {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .join-visual .media-horizontal img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255,255,255,0.1);
    }

    .join-visual .media-square img {
      width: 100%;
      max-width: 240px;
      height: auto;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255,255,255,0.1);
    }

    /* ========== 联系与公众号 ========== */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
      margin-bottom: 48px;
    }

    .contact-card {
      padding: 28px 24px;
      background: var(--bg-card);
      border: 1px solid rgba(255,255,255,0.07);
      border-radius: var(--radius-md);
      text-align: center;
      transition: transform 0.3s, border-color 0.3s;
    }

    .contact-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-glow);
    }

    .contact-icon {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      background: linear-gradient(145deg, rgba(108,60,255,0.3), rgba(0,212,255,0.12));
      border: 1px solid rgba(108,60,255,0.35);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    .contact-icon svg {
      width: 26px;
      height: 26px;
      stroke: var(--accent-cyan);
      fill: none;
      stroke-width: 1.7;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .contact-card h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .contact-card p {
      font-size: 14px;
      color: var(--text-muted);
      word-break: break-all;
    }

    .contact-card a {
      color: var(--accent-cyan);
    }

    .qr-block {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 32px;
      margin-top: 12px;
    }

    .qr-item {
      text-align: center;
    }

    .qr-item img {
      width: 150px;
      height: 150px;
      object-fit: cover;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255,255,255,0.15);
      margin-bottom: 10px;
    }

    .qr-item span {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* ========== 页脚 ========== */
    .site-footer {
      background: #070a12;
      border-top: 1px solid rgba(108,60,255,0.18);
      padding: 60px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 44px;
    }

    .footer-brand .logo-text {
      font-size: 21px;
      display: inline-block;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 13.5px;
      color: var(--text-dim);
      line-height: 1.8;
      margin-bottom: 16px;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-light);
    }

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

    .footer-col ul li {
      margin-bottom: 9px;
    }

    .footer-col ul li a {
      font-size: 13px;
      color: var(--text-dim);
      transition: color 0.25s;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      font-size: 12.5px;
      color: var(--text-dim);
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links a {
      color: var(--text-dim);
      transition: color 0.25s;
    }

    .friend-links a:hover {
      color: var(--accent-cyan);
    }

    /* ========== 浮动客服 ========== */
    .float-service {
      position: fixed;
      right: 22px;
      bottom: 90px;
      z-index: 900;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      background: var(--gradient-laser);
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 22px rgba(108,60,255,0.45);
      transition: transform 0.25s, box-shadow 0.25s;
      position: relative;
    }

    .float-btn:hover {
      transform: translateY(-3px) scale(1.06);
      box-shadow: 0 10px 30px rgba(108,60,255,0.6);
    }

    .float-btn svg {
      width: 25px;
      height: 25px;
      stroke: #fff;
      fill: none;
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .float-tooltip {
      position: absolute;
      right: 64px;
      top: 50%;
      transform: translateY(-50%);
      white-space: nowrap;
      padding: 7px 14px;
      font-size: 12.5px;
      font-weight: 600;
      color: #fff;
      background: rgba(21,28,50,0.96);
      border: 1px solid rgba(108,60,255,0.4);
      border-radius: 8px;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.25s;
    }

    .float-btn:hover .float-tooltip {
      opacity: 1;
    }

    .float-qr-pop {
      position: fixed;
      right: 90px;
      bottom: 90px;
      z-index: 950;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      padding: 16px;
      box-shadow: var(--shadow-soft);
      display: none;
      text-align: center;
    }

    .float-qr-pop.show {
      display: block;
      animation: fadeInUp 0.3s ease;
    }

    .float-qr-pop img {
      width: 150px;
      height: 150px;
      object-fit: cover;
      border-radius: 10px;
      margin-bottom: 8px;
    }

    .float-qr-pop span {
      font-size: 12px;
      color: var(--text-muted);
    }

    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(12px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .back-top {
      position: fixed;
      right: 22px;
      bottom: 24px;
      z-index: 900;
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: rgba(21,28,50,0.92);
      border: 1px solid rgba(108,60,255,0.4);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s, visibility 0.3s, transform 0.25s;
    }

    .back-top.show {
      opacity: 1;
      visibility: visible;
    }

    .back-top:hover {
      transform: translateY(-3px);
      border-color: var(--accent-cyan);
    }

    .back-top svg {
      width: 20px;
      height: 20px;
      stroke: var(--accent-cyan);
      fill: none;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1024px) {
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .scene-grid { grid-template-columns: repeat(3, 1fr); }
      .steps-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
      .network-grid { grid-template-columns: repeat(2, 1fr); }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .article-grid { grid-template-columns: repeat(2, 1fr); }
      .price-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
      .intro-grid { grid-template-columns: 1fr; gap: 36px; }
      .join-wrap { grid-template-columns: 1fr; padding: 36px 28px; }
      .contact-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 880px) {
      .nav-links {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: rgba(10,14,26,0.98);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(108,60,255,0.25);
        padding: 12px 24px 22px;
        gap: 2px;
        max-height: calc(100vh - 68px);
        overflow-y: auto;
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
      }
      .nav-links.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
      }
      .nav-links li a {
        padding: 12px 14px;
        font-size: 15px;
      }
      .mobile-toggle { display: flex; }
      .nav-cta { display: none; }
      .hero { padding: 120px 0 70px; }
      .hero-stats { grid-template-columns: repeat(2, 1fr); }
      .case-grid { grid-template-columns: 1fr; }
      .scene-grid { grid-template-columns: repeat(2, 1fr); }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .form-row { grid-template-columns: 1fr; }
      .join-visual { align-items: center; }
    }

    @media (max-width: 640px) {
      .section { padding: 60px 0; }
      .container { padding: 0 18px; }
      .header-inner { padding: 0 18px; }
      .hero h1 { font-size: 28px; }
      .hero-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
      .stat-card { padding: 16px 14px; }
      .service-grid { grid-template-columns: 1fr; }
      .scene-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: 1fr; }
      .network-grid { grid-template-columns: 1fr 1fr; }
      .review-grid { grid-template-columns: 1fr; }
      .article-grid { grid-template-columns: 1fr; }
      .contact-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .form-wrap { padding: 28px 20px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .btn-primary, .btn-ghost { width: 100%; }
      .float-service { right: 14px; bottom: 76px; }
      .back-top { right: 14px; bottom: 20px; }
      .float-qr-pop { right: 80px; bottom: 76px; }
      .intro-features { grid-template-columns: 1fr; }
      .intro-visual-grid { grid-template-columns: 1fr; }
      .qr-item img { width: 128px; height: 128px; }
    }

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