/* roulang page: index */
:root {
      --primary-600: #1d4ed8;
      --primary-500: #2563eb;
      --primary-50: #eff6ff;
      --accent-orange: #f97316;
      --accent-green: #10b981;
      --dark-900: #0f172a;
      --dark-800: #1e293b;
      --dark-700: #334155;
      --gray-50: #f8fafc;
      --gray-100: #f1f5f9;
      --gray-200: #e2e8f0;
      --gray-300: #cbd5e1;
      --gray-600: #475569;
      --gray-700: #334155;
      --gray-900: #0f172a;
      --white: #ffffff;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 9999px;
      --shadow-sm: 0 2px 6px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.07);
      --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-stack);
      color: var(--gray-900);
      background-color: var(--gray-50);
      line-height: 1.65;
      letter-spacing: -0.012em;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .text-center { text-align: center; }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      font-size: 0.8125rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      letter-spacing: 0.02em;
    }
    .badge-primary {
      background-color: var(--primary-50);
      color: var(--primary-600);
      border: 1px solid rgba(37, 99, 235, 0.2);
    }
    .badge-accent {
      background-color: #fff7ed;
      color: var(--accent-orange);
      border: 1px solid rgba(249, 115, 22, 0.25);
    }
    .badge-dark {
      background-color: rgba(255, 255, 255, 0.12);
      color: #93c5fd;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 26px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
      color: var(--white);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(37, 99, 235, 0.35);
    }
    .btn-accent {
      background: linear-gradient(135deg, #fb923c 0%, var(--accent-orange) 100%);
      color: var(--white);
      box-shadow: 0 6px 16px rgba(249, 115, 22, 0.3);
    }
    .btn-accent:hover {
      background: #ea580c;
      transform: translateY(-2px);
    }
    .btn-outline-white {
      background: transparent;
      color: var(--white);
      border: 1.5px solid rgba(255, 255, 255, 0.6);
    }
    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: var(--white);
    }
    .btn-outline {
      background: var(--white);
      color: var(--gray-700);
      border: 1.5px solid var(--gray-200);
    }
    .btn-outline:hover {
      border-color: var(--primary-500);
      color: var(--primary-600);
      background-color: var(--primary-50);
    }
    /* Header & Top Bar */
    .top-bar {
      height: 38px;
      background: var(--dark-900);
      color: #94a3b8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-bar-right a:hover {
      color: var(--white);
    }
    .main-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--gray-200);
      height: 74px;
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--primary-500) 0%, var(--accent-orange) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      font-weight: 800;
      font-size: 1.15rem;
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
    }
    .brand-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--gray-900);
      line-height: 1.25;
    }
    .brand-title span {
      display: block;
      font-size: 0.75rem;
      font-weight: 500;
      color: var(--gray-600);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--gray-700);
      position: relative;
      padding: 6px 0;
    }
    .nav-item a:hover,
    .nav-item.active a {
      color: var(--primary-600);
    }
    .nav-item.active a::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary-600);
      border-radius: 2px;
    }
    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--gray-900);
      margin: 5px 0;
      transition: all 0.3s;
    }
    /* Section Common Styles */
    .section-wrap {
      padding: 84px 0;
      position: relative;
    }
    .section-head {
      margin-bottom: 50px;
    }
    .section-head.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
      margin-bottom: 54px;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      color: var(--gray-900);
      line-height: 1.3;
      margin: 12px 0;
      letter-spacing: -0.02em;
    }
    .section-sub {
      font-size: 1.0625rem;
      color: var(--gray-600);
      line-height: 1.7;
    }
    .bg-white { background-color: var(--white); }
    .bg-light { background-color: var(--gray-100); }
    .bg-dark { background-color: var(--dark-900); color: var(--white); }
    /* Hero Banner: 工业参数首屏 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(30, 41, 59, 0.92) 100%),
                  url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      color: var(--white);
      padding: 90px 0 80px;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.2;
      margin: 18px 0;
      letter-spacing: -0.025em;
    }
    .hero-content h1 span {
      background: linear-gradient(90deg, #60a5fa, #34d399);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.125rem;
      color: #cbd5e1;
      line-height: 1.75;
      margin-bottom: 32px;
      max-width: 620px;
    }
    .hero-action-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    /* Industrial Spec Bar */
    .hero-spec-strip {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      padding: 20px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
    }
    .spec-item {
      border-right: 1px solid rgba(255, 255, 255, 0.12);
      padding-right: 14px;
    }
    .spec-item:last-child {
      border-right: none;
      padding-right: 0;
    }
    .spec-val {
      font-size: 1.625rem;
      font-weight: 800;
      color: #38bdf8;
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }
    .spec-label {
      font-size: 0.8125rem;
      color: #94a3b8;
      margin-top: 4px;
    }
    /* Hero Right Stage */
    .hero-stage {
      position: relative;
    }
    .hero-stage-card {
      background: rgba(30, 41, 59, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 26px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(14px);
    }
    .stage-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 14px;
      margin-bottom: 20px;
    }
    .stage-title {
      font-size: 0.9375rem;
      font-weight: 700;
      color: #f8fafc;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .stage-status-dot {
      width: 10px;
      height: 10px;
      background: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--accent-green);
    }
    .stage-metric-rows {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .metric-row {
      background: rgba(15, 23, 42, 0.6);
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .metric-row span {
      font-size: 0.875rem;
      color: #cbd5e1;
    }
    .metric-row strong {
      font-size: 1.125rem;
      color: #38bdf8;
    }
    .hero-img-wrap {
      margin-top: 20px;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    /* Section 2: 分类入口 (Category Grid) */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .category-card {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius-md);
      padding: 26px 22px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }
    .category-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-500);
    }
    .cat-icon-badge {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--primary-50);
      color: var(--primary-600);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 18px;
    }
    .cat-title {
      font-size: 1.1875rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 8px;
    }
    .cat-desc {
      font-size: 0.875rem;
      color: var(--gray-600);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .cat-meta {
      font-size: 0.8125rem;
      color: var(--primary-600);
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    /* Section 3: 精选推荐方案 (Featured Products) */
    .featured-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .featured-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
      position: relative;
    }
    .featured-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-5px);
    }
    .featured-card.highlight {
      border: 2px solid var(--primary-500);
      box-shadow: 0 16px 36px -8px rgba(37, 99, 235, 0.16);
    }
    .featured-ribbon {
      position: absolute;
      top: 16px;
      right: 16px;
      z-index: 10;
    }
    .featured-img {
      height: 200px;
      width: 100%;
      object-fit: cover;
    }
    .featured-body {
      padding: 28px 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .featured-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .featured-text {
      font-size: 0.9125rem;
      color: var(--gray-600);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .featured-specs {
      list-style: none;
      border-top: 1px dashed var(--gray-200);
      padding-top: 16px;
      margin-bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .featured-specs li {
      font-size: 0.84375rem;
      color: var(--gray-700);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .featured-specs li::before {
      content: "✓";
      color: var(--accent-green);
      font-weight: 700;
    }
    /* Section 4: 资讯精要 (Industry News) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .news-card {
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--gray-200);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
      border-color: var(--gray-300);
    }
    .news-thumb {
      height: 175px;
      width: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-header-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      font-size: 0.8125rem;
      color: var(--gray-600);
    }
    .news-title {
      font-size: 1.125rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 10px;
      color: var(--gray-900);
    }
    .news-desc {
      font-size: 0.875rem;
      color: var(--gray-600);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.84375rem;
      color: var(--primary-600);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    /* Section 5: 指标与核心排行榜 (Ranking & Highlights) */
    .ranking-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .rank-board {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }
    .rank-board-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .rank-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .rank-item {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      background: var(--gray-50);
      transition: background 0.2s;
    }
    .rank-item:hover {
      background: #f1f5f9;
    }
    .rank-idx {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--gray-200);
      color: var(--gray-700);
      font-size: 0.875rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .rank-item:nth-child(1) .rank-idx {
      background: #fef08a;
      color: #854d0e;
    }
    .rank-item:nth-child(2) .rank-idx {
      background: #e2e8f0;
      color: #334155;
    }
    .rank-item:nth-child(3) .rank-idx {
      background: #ffedd5;
      color: #9a3412;
    }
    .rank-info {
      flex-grow: 1;
    }
    .rank-name {
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--gray-900);
    }
    .rank-detail {
      font-size: 0.8125rem;
      color: var(--gray-600);
    }
    .rank-stat {
      font-weight: 700;
      color: var(--primary-600);
      font-size: 1.0625rem;
    }
    /* Section 6: 案例与量化证据 (Client Stories) */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .case-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--gray-200);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-img {
      height: 240px;
      width: 100%;
      object-fit: cover;
    }    .case-body {
      padding: 30px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .case-tag {
      margin-bottom: 12px;
    }
    .case-heading {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .case-p {
      font-size: 0.9375rem;
      color: var(--gray-600);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .case-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      padding-top: 20px;
      border-top: 1px solid var(--gray-200);
      margin-top: auto;
    }
    .c-stat-box {
      background: var(--gray-50);
      padding: 12px;
      border-radius: var(--radius-sm);
      text-align: center;
    }
    .c-stat-n {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-600);
      line-height: 1.2;
    }
    .c-stat-t {
      font-size: 0.75rem;
      color: var(--gray-600);
      margin-top: 4px;
    }
    /* Section 7: 传统开发与统一运营系统对比选型表 */
    .compare-container {
      background: var(--white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--gray-200);
      box-shadow: var(--shadow-sm);
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--gray-200);
      font-size: 0.9375rem;
    }
    .compare-table th {
      background: var(--gray-100);
      font-weight: 700;
      color: var(--gray-900);
    }
    .compare-table th.col-highlight {
      background: var(--primary-50);
      color: var(--primary-600);
      border-left: 2px solid var(--primary-500);
      border-right: 2px solid var(--primary-500);
    }
    .compare-table td.col-highlight {
      background: rgba(239, 246, 255, 0.4);
      font-weight: 600;
      color: var(--primary-600);
      border-left: 2px solid var(--primary-500);
      border-right: 2px solid var(--primary-500);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    /* Section 8: 深度技术底座与数据微内核 (Dark Section) */
    .deep-tech-panel {
      background: linear-gradient(145deg, #0b1120 0%, #1e293b 100%);
      border-radius: var(--radius-lg);
      padding: 48px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
    }
    .tech-dual-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .tech-item-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-top: 24px;
    }
    .tech-item {
      display: flex;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      padding: 18px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .tech-icon {
      font-size: 1.5rem;
      color: #38bdf8;
      flex-shrink: 0;
    }
    .tech-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: #f1f5f9;
      margin-bottom: 6px;
    }
    .tech-desc {
      font-size: 0.875rem;
      color: #94a3b8;
      line-height: 1.6;
    }
    .tech-flow-card {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 26px;
    }
    .flow-step-item {
      padding: 14px 16px;
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, 0.05);
      margin-bottom: 12px;
      border-left: 4px solid var(--primary-500);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .flow-step-item:last-child {
      margin-bottom: 0;
      border-left-color: var(--accent-green);
    }
    /* Section 9: 发展历程与版本里程碑 (Milestones) */
    .timeline-wrap {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
      padding: 20px 0;
    }
    .timeline-wrap::before {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: var(--gray-200);
      transform: translateX(-50%);
    }
    .timeline-node {
      display: flex;
      justify-content: flex-end;
      padding-right: 48px;
      position: relative;
      margin-bottom: 40px;
      width: 50%;
    }
    .timeline-node:nth-child(even) {
      align-self: flex-end;
      margin-left: auto;
      justify-content: flex-start;
      padding-right: 0;
      padding-left: 48px;
    }
    .timeline-point {
      position: absolute;
      top: 18px;
      right: -10px;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--white);
      border: 4px solid var(--primary-500);
      box-shadow: 0 0 0 4px var(--primary-50);
      z-index: 2;
    }
    .timeline-node:nth-child(even) .timeline-point {
      right: auto;
      left: -10px;
    }
    .timeline-content {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      width: 100%;
    }
    .timeline-ver {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--primary-600);
      margin-bottom: 6px;
    }
    .timeline-h {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 8px;
    }
    .timeline-p {
      font-size: 0.875rem;
      color: var(--gray-600);
      line-height: 1.6;
    }
    /* Section 10: 行业生态合作伙伴 (Partners) */
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .partner-card {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      transition: all 0.3s;
    }
    .partner-card:hover {
      border-color: var(--primary-500);
      box-shadow: var(--shadow-sm);
    }
    .partner-name {
      font-size: 1rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 6px;
    }
    .partner-meta {
      font-size: 0.8125rem;
      color: var(--gray-600);
    }
    /* Section 11: 平台合规与安全资质保障 (Guarantee) */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-box {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s;
    }
    .guarantee-box:hover {
      transform: translateY(-4px);
    }
    .guarantee-icon {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: var(--primary-50);
      color: var(--primary-600);
      margin: 0 auto 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
    }
    .guarantee-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 8px;
    }
    .guarantee-desc {
      font-size: 0.84375rem;
      color: var(--gray-600);
      line-height: 1.6;
    }
    /* Section 12: 常见业务与技术疑问 (FAQ Accordion) */
    .faq-accordion {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.25s;
    }
    .faq-item[open] {
      border-color: var(--primary-500);
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 20px 24px;
      font-size: 1rem;
      font-weight: 700;
      color: var(--gray-900);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      list-style: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: "+";
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--primary-600);
      transition: transform 0.25s;
    }
    .faq-item[open] .faq-summary::after {
      content: "−";
      transform: rotate(180deg);
    }
    .faq-answer {
      padding: 0 24px 22px;
      font-size: 0.90625rem;
      color: var(--gray-600);
      line-height: 1.7;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }
    /* Section 13: 转化与演示预约表单 (Contact CTA) */
    .cta-outer-panel {
      background: linear-gradient(135deg, var(--primary-600) 0%, #1e3a8a 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: var(--white);
      box-shadow: 0 24px 48px -12px rgba(29, 78, 216, 0.4);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-info h2 {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.25;
      margin: 16px 0;
    }
    .cta-info p {
      font-size: 1rem;
      color: #bfdbfe;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .cta-trust-items {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .cta-trust-items li {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.875rem;
      color: #e2e8f0;
    }
    .cta-trust-items li::before {
      content: "●";
      color: var(--accent-orange);
      font-size: 0.75rem;
    }
    .lead-form-box {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 32px;
      color: var(--gray-900);
      box-shadow: 0 20px 30px rgba(0, 0, 0, 0.15);
    }
    .form-heading {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 20px;
      text-align: center;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.84375rem;
      font-weight: 600;
      color: var(--gray-700);
      margin-bottom: 6px;
    }
    .form-input, .form-select {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1.5px solid var(--gray-200);
      border-radius: var(--radius-sm);
      font-size: 0.90625rem;
      color: var(--gray-900);
      outline: none;
      transition: all 0.2s;
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--primary-500);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }
    /* Site Footer */
    .site-footer {
      background: var(--dark-900);
      color: #94a3b8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--white);
      margin-bottom: 14px;
    }
    .footer-brand-p {
      font-size: 0.875rem;
      line-height: 1.7;
      color: #94a3b8;
      margin-bottom: 20px;
    }
    .footer-h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links li a {
      font-size: 0.875rem;
      color: #94a3b8;
    }
    .footer-links li a:hover {
      color: var(--white);
      padding-left: 4px;
    }
    .footer-contact-item {
      font-size: 0.875rem;
      line-height: 1.65;
      margin-bottom: 12px;
      display: flex;
      flex-direction: column;
    }
    .footer-contact-item strong {
      color: #cbd5e1;
      font-size: 0.8125rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
    }
    .footer-bottom a {
      color: #64748b;
    }
    .footer-bottom a:hover {
      color: #94a3b8;
    }
    /* Mobile Drawer */
    .mobile-drawer {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: var(--dark-900);
      z-index: 10000;
      display: none;
      flex-direction: column;
      padding: 30px 24px;
    }
    .mobile-drawer.active {
      display: flex;
    }
    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
    }
    .drawer-close {
      background: none;
      border: none;
      color: var(--white);
      font-size: 2rem;
      cursor: pointer;
    }
    .drawer-menu {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .drawer-menu a {
      color: var(--white);
      font-size: 1.15rem;
      font-weight: 600;
    }
    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .category-grid, .guarantee-grid, .partner-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .featured-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 2.4rem;
      }
      .tech-dual-grid {
        grid-template-columns: 1fr;
      }
      .deep-tech-panel {
        padding: 32px 24px;
      }
    }
    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-menu, .header-cta { display: none; }
      .mobile-toggle { display: block; }
      .category-grid, .featured-grid, .news-grid, .ranking-grid, .case-grid, .partner-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .hero-spec-strip {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .spec-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 10px;
      }
      .spec-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
      }
      .timeline-wrap::before {
        left: 20px;
      }
      .timeline-node, .timeline-node:nth-child(even) {
        width: 100%;
        padding-left: 54px;
        padding-right: 0;
      }
      .timeline-point, .timeline-node:nth-child(even) .timeline-point {
        left: 10px;
      }
      .cta-grid {
        grid-template-columns: 1fr;
      }
      .cta-outer-panel {
        padding: 36px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }