/* roulang page: index */
:root {
      --primary-navy: #0E44B8;
      --primary-teal: #00A389;
      --brand-gradient: linear-gradient(135deg, #0E44B8 0%, #00A389 100%);
      --brand-gradient-hover: linear-gradient(135deg, #0b3695 0%, #008772 100%);
      --accent-cyan: #00E5FF;
      --accent-orange: #FF7D00;
      --bg-white: #FFFFFF;
      --bg-light: #F4F7FB;
      --bg-deep: #081226;
      --bg-deep-card: #0F1D38;
      --text-main: #0B132B;
      --text-body: #3A4560;
      --text-muted: #6B7A99;
      --border-light: rgba(14, 68, 184, 0.08);
      --card-radius: 20px;
      --radius-sm: 8px;
      --radius-pill: 9999px;
      --shadow-card: 0 10px 30px -10px rgba(14, 68, 184, 0.08);
      --shadow-hover: 0 20px 40px -12px rgba(0, 163, 137, 0.18);
      --container-max: 1280px;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      color: var(--text-body);
      background-color: var(--bg-white);
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 32px;
    }

    /* 顶部信息栏 */
    .top-bar {
      background: #060e1f;
      color: #8fa0be;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #92e6d6;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #00E5FF;
      border-radius: 50%;
      box-shadow: 0 0 8px #00E5FF;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.4; }
      50% { opacity: 1; }
      100% { opacity: 0.4; }
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
      border-bottom: 1px solid rgba(14, 68, 184, 0.05);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.45rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: var(--brand-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 0 4px 12px rgba(14, 68, 184, 0.25);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      font-size: 0.98rem;
      font-weight: 500;
      color: var(--text-body);
      transition: var(--transition);
      position: relative;
      padding: 6px 0;
    }
    .nav-item a:hover {
      color: var(--primary-navy);
    }
    .nav-item a:hover::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--brand-gradient);
      border-radius: 2px;
    }
    .header-btn {
      display: inline-flex;
      align-items: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      color: #ffffff;
      background: var(--brand-gradient);
      transition: var(--transition);
      box-shadow: 0 6px 16px rgba(14, 68, 184, 0.2);
    }
    .header-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(0, 163, 137, 0.3);
    }

    /* 移动端汉堡菜单控制 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 通用板块与标题系统 */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-light);
    }
    .section-dark {
      background-color: var(--bg-deep);
      color: #ffffff;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px auto;
    }
    .pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: var(--radius-pill);
      background: rgba(14, 68, 184, 0.08);
      color: var(--primary-navy);
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .pill-badge.light {
      background: rgba(0, 229, 255, 0.12);
      color: var(--accent-cyan);
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-dark .section-desc {
      color: #93a4c3;
    }

    /* SECTION 1: HERO 首屏 */
    .hero-section {
      position: relative;
      padding: 90px 0 100px;
      background: radial-gradient(circle at 10% 20%, rgba(14, 68, 184, 0.04) 0%, rgba(0, 163, 137, 0.03) 90%), #ffffff;
      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: 1.25;
      color: var(--text-main);
      margin-bottom: 22px;
      letter-spacing: -1px;
    }
    .hero-content h1 span {
      background: var(--brand-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.12rem;
      color: var(--text-body);
      line-height: 1.85;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      background: var(--brand-gradient);
      color: #fff;
      box-shadow: 0 10px 24px rgba(14, 68, 184, 0.25);
      transition: var(--transition);
      border: none;
      cursor: pointer;
    }
    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(0, 163, 137, 0.35);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 32px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      border: 2px solid rgba(14, 68, 184, 0.2);
      color: var(--primary-navy);
      background: transparent;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(14, 68, 184, 0.05);
      border-color: var(--primary-navy);
    }
    .hero-meta-points {
      display: flex;
      gap: 28px;
      border-top: 1px solid rgba(0, 0, 0, 0.06);
      padding-top: 24px;
    }
    .meta-point-item strong {
      display: block;
      font-size: 1.45rem;
      font-weight: 700;
      color: var(--primary-navy);
    }
    .meta-point-item span {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .hero-dashboard-mock {
      background: #081226;
      border-radius: var(--card-radius);
      padding: 24px;
      box-shadow: 0 25px 60px -15px rgba(8, 18, 38, 0.35);
      border: 1px solid rgba(0, 229, 255, 0.2);
      color: #fff;
    }
    .mock-topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 14px;
      margin-bottom: 20px;
    }
    .mock-indicator {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.82rem;
      color: var(--accent-cyan);
    }
    .mock-stats-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }
    .mock-card {
      background: #0e1e3b;
      padding: 16px;
      border-radius: 12px;
      border: 1px solid rgba(255, 255, 255, 0.06);
    }
    .mock-card-label {
      font-size: 0.82rem;
      color: #8da1c4;
      margin-bottom: 6px;
    }
    .mock-card-val {
      font-size: 1.5rem;
      font-weight: 700;
      color: #ffffff;
    }
    .mock-visual {
      background: #0d1a33;
      border-radius: 14px;
      padding: 18px;
      border: 1px solid rgba(255, 255, 255, 0.05);
      position: relative;
      overflow: hidden;
    }
    .mock-bar-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
      font-size: 0.82rem;
      color: #9cb0d1;
    }
    .mock-bar-row:last-child {
      margin-bottom: 0;
    }
    .bar-line {
      flex: 1;
      height: 7px;
      background: rgba(255, 255, 255, 0.08);
      border-radius: 4px;
      overflow: hidden;
      position: relative;
    }
    .bar-fill {
      height: 100%;
      border-radius: 4px;
      background: var(--brand-gradient);
    }

    /* SECTION 2: 矩阵与产品解构 */
    .matrix-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .matrix-img-box {
      border-radius: var(--card-radius);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
    }
    .matrix-content h3 {
      font-size: 1.85rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
      line-height: 1.4;
    }
    .matrix-params {
      margin-top: 24px;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .param-box {
      padding: 16px 20px;
      background: var(--bg-white);
      border-radius: 14px;
      border: 1px solid var(--border-light);
    }
    .param-box strong {
      display: block;
      font-size: 1.3rem;
      color: var(--primary-navy);
      margin-bottom: 4px;
    }
    .param-box span {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* SECTION 3: 核心优势 6卡片网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .feature-card {
      background: var(--bg-white);
      padding: 36px 30px;
      border-radius: var(--card-radius);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 163, 137, 0.3);
    }
    .feature-icon-badge {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: rgba(14, 68, 184, 0.08);
      color: var(--primary-navy);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.25rem;
      margin-bottom: 22px;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* SECTION 4: 标杆产品矩阵 3列大卡 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .solution-card {
      background: var(--bg-white);
      border-radius: var(--card-radius);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .solution-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .solution-cover {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .solution-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .solution-card:hover .solution-cover img {
      transform: scale(1.05);
    }
    .solution-body {
      padding: 32px 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .solution-body h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .solution-body p {
      font-size: 0.94rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 20px;
      flex: 1;
    }
    .solution-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 24px;
    }
    .solution-tag {
      background: #eef4fc;
      color: var(--primary-navy);
      font-size: 0.78rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
    }

    /* SECTION 5: 深色沉浸式全域数智中台 */
    .deep-architecture-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 48px;
    }
    .arch-card {
      background: var(--bg-deep-card);
      border-radius: var(--card-radius);
      padding: 30px 24px;
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition);
    }
    .arch-card:hover {
      border-color: var(--accent-cyan);
      box-shadow: 0 10px 30px rgba(0, 229, 255, 0.15);
      transform: translateY(-4px);
    }
    .arch-step {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent-cyan);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .arch-card h3 {
      font-size: 1.2rem;
      color: #ffffff;
      margin-bottom: 12px;
      font-weight: 600;
    }
    .arch-card p {
      font-size: 0.9rem;
      color: #9cb0d1;
      line-height: 1.7;
    }

    /* SECTION 6: 结果对比 (传统 vs 平台) */
    .comparison-container {
      background: var(--bg-white);
      border-radius: var(--card-radius);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }
    .comparison-row {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      padding: 22px 32px;
      align-items: center;
      border-bottom: 1px solid rgba(14, 68, 184, 0.06);
    }
    .comparison-row:last-child {
      border-bottom: none;
    }
    .comparison-row.header {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
      font-size: 1rem;
    }
    .comp-aspect {
      font-weight: 600;
      color: var(--text-main);
    }
    .comp-old {
      color: #8c9ba5;
      font-size: 0.95rem;
      padding-right: 20px;
    }
    .comp-new {
      color: var(--primary-teal);
      font-weight: 600;
      font-size: 0.98rem;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .comp-new::before {
      content: '✓';
      display: inline-block;
      width: 18px;
      height: 18px;
      background: rgba(0, 163, 137, 0.12);
      border-radius: 50%;
      text-align: center;
      line-height: 18px;
      font-size: 0.75rem;
    }

    /* SECTION 7: 关键数据统计条 */
    .metrics-bar-wrap {
      background: var(--brand-gradient);
      padding: 60px 0;
      color: #ffffff;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-item strong {
      display: block;
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 8px;
      letter-spacing: -1px;
    }
    .metric-item span {
      font-size: 1rem;
      color: rgba(255, 255, 255, 0.88);
      font-weight: 500;
    }

    /* SECTION 8: 真实口碑反馈 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .review-card {
      background: var(--bg-white);
      padding: 36px 30px;
      border-radius: var(--card-radius);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 0.98rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 24px;
      font-style: normal;
    }
    .review-user-info {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid rgba(14, 68, 184, 0.06);
      padding-top: 18px;
    }
    .review-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(14, 68, 184, 0.1);
      color: var(--primary-navy);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .review-user-name {
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.98rem;
    }
    .review-user-org {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* SECTION 9: 资讯与研报 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .insight-card {
      background: var(--bg-white);
      border-radius: var(--card-radius);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .insight-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .insight-img {
      height: 200px;
      overflow: hidden;
    }
    .insight-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 26px;
    }
    .insight-date {
      font-size: 0.82rem;
      color: var(--primary-teal);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .insight-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .insight-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .insight-link {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary-navy);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* SECTION 10: 平台保障区 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .security-card {
      background: var(--bg-white);
      padding: 28px 22px;
      border-radius: 16px;
      border: 1px solid var(--border-light);
      text-align: center;
    }
    .security-badge {
      font-size: 1.8rem;
      margin-bottom: 14px;
      color: var(--primary-navy);
    }
    .security-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .security-card p {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* SECTION 11: FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-white);
      border-radius: 16px;
      border: 1px solid var(--border-light);
      margin-bottom: 18px;
      overflow: hidden;
      box-shadow: 0 4px 16px rgba(14, 68, 184, 0.04);
    }
    .faq-question {
      width: 100%;
      padding: 22px 28px;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      text-align: left;
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary-navy);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      padding: 0 28px;
      color: var(--text-body);
      font-size: 0.98rem;
      line-height: 1.8;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 22px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* SECTION 12: 转化表单与底部 CTA */
    .form-section {
      background: radial-gradient(circle at bottom, #0d2250 0%, #081226 100%);
      color: #ffffff;
      padding: 90px 0;
    }
    .form-container {
      max-width: 900px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.12);
      backdrop-filter: blur(16px);
      padding: 50px 48px;
      border-radius: var(--card-radius);
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    }
    .form-header {
      text-align: center;
      margin-bottom: 38px;
    }
    .form-header h2 {
      font-size: 2.2rem;
      font-weight: 800;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .form-header p {
      color: #9cb0d1;
      font-size: 1.05rem;
    }
    .cta-form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: #cfdcf3;
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 14px 18px;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 10px;
      color: #ffffff;
      font-size: 0.98rem;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--accent-cyan);
      background: rgba(255, 255, 255, 0.12);
      box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
    }
    .form-control option {
      background: #081226;
      color: #ffffff;
    }
    .btn-submit {
      width: 100%;
      padding: 16px;
      font-size: 1.1rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--brand-gradient);
      border: none;
      border-radius: var(--radius-pill);
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 24px rgba(0, 163, 137, 0.4);
      margin-top: 10px;
    }
    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(0, 163, 137, 0.5);
    }
    .form-privacy-note {
      text-align: center;
      margin-top: 18px;
      font-size: 0.82rem;
      color: #8da1c4;
    }

    /* 页脚 */
    .site-footer {
      background: #040914;
      color: #8fa0be;
      padding: 64px 0 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.92rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 1.4rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.8;
      margin-bottom: 18px;
      font-size: 0.9rem;
    }
    .footer-column h5 {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: #8fa0be;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: var(--accent-cyan);
    }
    .footer-contact-item {
      margin-bottom: 10px;
      display: flex;
      gap: 8px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid {
        grid-template-columns: 1fr;
      }
      .features-grid,
      .solutions-grid,
      .reviews-grid,
      .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .deep-architecture-grid,
      .security-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }
      .section-wrap {
        padding: 64px 0;
      }
      .hero-content h1 {
        font-size: 2.2rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .features-grid,
      .solutions-grid,
      .reviews-grid,
      .insights-grid,
      .deep-architecture-grid,
      .security-grid,
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .comparison-row {
        grid-template-columns: 1fr;
        gap: 8px;
      }
      .comparison-row.header {
        display: none;
      }
      .cta-form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .nav-links,
      .header-btn {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .top-bar {
        display: none;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }