/* roulang page: index */
:root {
      --bg-base: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-dark: #0B1320;
      --bg-deep: #070D17;
      --primary: #0284C7;
      --primary-dark: #0369A1;
      --accent-cyan: #38BDF8;
      --accent-emerald: #10B981;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.08);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius-sm: 4px;
      --radius-md: 8px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      --container-max: 1240px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    button, input, select, textarea {
      font-family: inherit;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部导航 Utility + Main */
    .utility-bar {
      background-color: var(--bg-deep);
      color: var(--text-light);
      font-size: 12px;
      padding: 6px 0;
      border-bottom: 1px solid var(--border-dark);
    }
    .utility-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background-color: var(--accent-emerald);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 8px var(--accent-emerald);
      animation: pulseDot 2s infinite;
    }
    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.15); }
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 700;
      letter-spacing: -0.3px;
      color: var(--text-main);
    }
    .brand-badge {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      font-size: 11px;
      padding: 2px 7px;
      border-radius: 3px;
      font-weight: 600;
      text-transform: uppercase;
    }
    .nav-menu {
      display: flex;
      gap: 28px;
      list-style: none;
      align-items: center;
    }
    .nav-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #fff;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(2, 132, 199, 0.35);
    }
    .btn-secondary {
      background-color: var(--bg-surface);
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: #F0F9FF;
    }
    .btn-dark {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      border-color: var(--border-dark);
    }
    .btn-dark:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: var(--accent-cyan);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    /* 板块通用标准 */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-bg-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 56px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--primary);
      background: #E0F2FE;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .section-dark .section-tag {
      background: rgba(56, 189, 248, 0.15);
      color: var(--accent-cyan);
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: var(--text-light);
    }

    /* 板块一：Hero 裂变邀请与动力学首屏 */
    .hero-section {
      padding: 70px 0 90px;
      background: radial-gradient(circle at 80% 20%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
                  linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .hero-h1 span {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
    }
    .fission-banner-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-left: 4px solid var(--primary);
      padding: 18px 22px;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
    }
    .fission-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
    }
    .progress-bar-bg {
      width: 100%;
      height: 7px;
      background: #EEF2F6;
      border-radius: 4px;
      overflow: hidden;
      margin-bottom: 8px;
    }
    .progress-fill {
      width: 78%;
      height: 100%;
      background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
      border-radius: 4px;
    }
    .fission-tips {
      font-size: 12px;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
    }
    .hero-media-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.15);
      border: 1px solid var(--border-color);
      background: #000;
    }
    .hero-media-card img {
      width: 100%;
      height: 440px;
      object-fit: cover;
      opacity: 0.92;
    }
    .hero-hud-overlay {
      position: absolute;
      bottom: 16px;
      left: 16px;
      right: 16px;
      background: rgba(11, 19, 32, 0.88);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-dark);
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      display: flex;
      justify-content: space-around;
      color: #fff;
    }
    .hud-stat-num {
      font-size: 18px;
      font-weight: 700;
      color: var(--accent-cyan);
    }
    .hud-stat-lbl {
      font-size: 11px;
      color: var(--text-light);
    }

    /* 板块二：痛点剖析 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 32px 24px;
      transition: var(--transition);
      position: relative;
    }
    .pain-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px -10px rgba(2, 132, 199, 0.1);
      border-color: #BAE6FD;
    }
    .pain-idx {
      font-size: 28px;
      font-weight: 800;
      color: #CBD5E1;
      margin-bottom: 12px;
      font-family: monospace;
    }
    .pain-h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .pain-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块三：架构与方案流程 */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 28px 20px;
      position: relative;
    }
    .flow-step-num {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      font-size: 13px;
      font-weight: 700;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }
    .flow-h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .flow-text {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块四：六大技术看板优势 */
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 28px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .adv-item:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: 0 10px 24px -8px rgba(0, 0, 0, 0.05);
    }
    .adv-top-badge {
      font-size: 11px;
      font-weight: 600;
      color: var(--primary-dark);
      background: #E0F2FE;
      padding: 2px 8px;
      border-radius: 2px;
      display: inline-block;
      margin-bottom: 14px;
    }
    .adv-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .adv-desc {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .adv-metric-flag {
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
      font-size: 12px;
      color: var(--primary-dark);
      font-weight: 600;
    }

    /* 板块五：沉浸式算法内核 */
    .pipeline-wrapper {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 36px;
    }
    .pipeline-step-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 32px;
    }
    .pipeline-box {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-sm);
      padding: 24px;
    }
    .pipeline-h4 {
      font-size: 16px;
      color: var(--accent-cyan);
      margin-bottom: 10px;
      font-weight: 600;
    }
    .pipeline-text {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.65;
    }

    /* 板块六：场景演示与图文画廊 */
    .case-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 48px;
    }
    .case-row:last-child {
      margin-bottom: 0;
    }
    .case-row.reverse {
      direction: rtl;
    }
    .case-row.reverse .case-content {
      direction: ltr;
    }
    .case-media-box {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #000;
    }
    .case-media-box img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .case-media-box:hover img {
      transform: scale(1.03);
    }
    .case-content {
      padding: 10px;
    }
    .case-h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .case-p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .case-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .case-tag-item {
      font-size: 12px;
      color: var(--primary);
      background: #F0F9FF;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      border: 1px solid #BAE6FD;
    }

    /* 板块七：核心运行指标 */
    .metrics-bar-wrap {
      background: var(--bg-deep);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 48px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-value {
      font-size: 38px;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -0.5px;
      margin-bottom: 6px;
    }
    .metric-value span {
      font-size: 20px;
      color: var(--accent-cyan);
      font-weight: 600;
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 板块八：专家与教练员评述 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 32px 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--text-muted);
      font-size: 13px;
    }
    .reviewer-info-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-info-role {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块九：前沿资讯与学术速递 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }
    .news-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块十：套餐对比与产品矩阵 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .pricing-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .pricing-card.featured {
      border-color: var(--primary);
      box-shadow: 0 12px 30px -10px rgba(2, 132, 199, 0.2);
    }
    .featured-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: #fff;
      font-size: 11px;
      padding: 2px 10px;
      border-radius: 20px;
      font-weight: 600;
    }
    .pricing-plan {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .pricing-target {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 40px;
    }
    .pricing-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .pricing-features li {
      font-size: 13.5px;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-features li::before {
      content: "✓";
      color: var(--accent-emerald);
      font-weight: 800;
    }

    /* 板块十一：技术规格与常见问答 FAQ */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #FFFFFF;
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: #BAE6FD;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 15.5px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-toggle-icon {
      font-size: 20px;
      line-height: 1;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFCFE;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 220px;
      padding: 0 24px 20px 24px;
      border-top: 1px solid #F1F5F9;
    }

    /* 板块十二：保障与合规资质条 */
    .guarantee-band {
      background: #0F172A;
      color: #FFFFFF;
      padding: 44px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      align-items: center;
    }
    .guarantee-box {
      border-left: 2px solid var(--primary);
      padding-left: 18px;
    }
    .guarantee-title {
      font-size: 14px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 4px;
    }
    .guarantee-text {
      font-size: 12px;
      color: var(--text-light);
      line-height: 1.5;
    }

    /* 板块十三：部署接入咨询与试用引导表单 */
    .cta-card {
      background: linear-gradient(135deg, #0B1320 0%, #0F172A 100%);
      border-radius: var(--radius-md);
      border: 1px solid rgba(56, 189, 248, 0.2);
      padding: 56px 48px;
      color: #FFFFFF;
      box-shadow: 0 24px 48px -12px rgba(2, 132, 199, 0.25);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-h2 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #FFFFFF;
    }
    .cta-p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .consult-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      padding: 28px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-dark);
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-label {
      font-size: 12px;
      color: #CBD5E1;
      font-weight: 500;
    }
    .form-input, .form-select {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid #334155;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 13.5px;
      transition: var(--transition);
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.25);
    }
    .form-btn-submit {
      width: 100%;
      background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
      color: #FFFFFF;
      border: none;
      padding: 12px;
      font-size: 14px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
    }
    .form-btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    /* 统一页脚 */
    .site-footer {
      background: var(--bg-deep);
      color: var(--text-light);
      padding: 72px 0 32px;
      border-top: 1px solid var(--border-dark);
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 56px;
    }
    .footer-brand-title {
      font-size: 18px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-desc {
      line-height: 1.7;
      color: #94A3B8;
      font-size: 13px;
      margin-bottom: 20px;
    }
    .footer-col-title {
      font-size: 14px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent-cyan);
    }
    .footer-contact-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
      margin-bottom: 12px;
    }
    .footer-contact-label {
      font-size: 11px;
      color: #64748B;
    }
    .footer-contact-val {
      color: #F8FAFC;
      font-weight: 600;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
    }
    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-grid, .cta-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .pain-grid, .adv-grid, .pipeline-step-row, .reviews-grid, .news-grid, .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-grid, .metrics-grid, .guarantee-grid, .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-row, .case-row.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
    }
    @media (max-width: 768px) {
      .utility-bar {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .hero-h1 {
        font-size: 30px;
      }
      .section-title {
        font-size: 25px;
      }
      .pain-grid, .adv-grid, .pipeline-step-row, .reviews-grid, .news-grid, .pricing-grid, .flow-grid, .metrics-grid, .guarantee-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .consult-form {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .cta-card {
        padding: 32px 20px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }