/* roulang page: index */
:root {
      --primary: #0F5132;
      --primary-dark: #0A3622;
      --primary-light: #198754;
      --accent: #20C997;
      --accent-glow: #00E676;
      --highlight: #FF9800;
      --highlight-hover: #E68A00;
      --dark-pitch: #0A1912;
      --dark-card: #12261C;
      --text-main: #111827;
      --text-muted: #4B5563;
      --text-sub: #9CA3AF;
      --bg-light: #F8FAF8;
      --bg-white: #FFFFFF;
      --border-color: rgba(15, 81, 50, 0.12);
      --border-dark: rgba(32, 201, 151, 0.25);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --shadow-sm: 0 2px 8px rgba(15, 81, 50, 0.06);
      --shadow-md: 0 6px 24px -2px rgba(15, 81, 50, 0.1);
      --shadow-lg: 0 16px 36px -4px rgba(15, 81, 50, 0.18);
      --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      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: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部服务信息栏 */
    .top-utility-bar {
      background-color: #EBF3EE;
      font-size: 0.82rem;
      color: var(--text-muted);
      border-bottom: 1px solid rgba(15, 81, 50, 0.08);
      padding: 6px 0;
    }
    .top-utility-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .top-utility-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .top-tag {
      background: var(--primary-light);
      color: #fff;
      padding: 1px 6px;
      border-radius: 4px;
      font-size: 0.75rem;
    }

    /* 主导航 */
    .main-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: box-shadow 0.3s ease;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .logo-ball-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      box-shadow: 0 2px 8px rgba(32, 201, 151, 0.4);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 22px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link:hover::after, .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      white-space: nowrap;
      min-height: 44px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(15, 81, 50, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(15, 81, 50, 0.35);
    }
    .btn-accent {
      background-color: var(--highlight);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 152, 0, 0.3);
    }
    .btn-accent:hover {
      background-color: var(--highlight-hover);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.4);
      color: #ffffff;
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: #ffffff;
    }

    /* 移动端汉堡 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--primary);
      cursor: pointer;
      padding: 6px;
    }

    /* 共同 Section 规范 */
    .section-wrap {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-white);
    }
    .section-dark {
      background: linear-gradient(180deg, var(--dark-pitch) 0%, var(--dark-card) 100%);
      color: #ffffff;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      background: rgba(25, 135, 84, 0.12);
      color: var(--primary-light);
    }
    .section-dark .section-badge {
      background: rgba(32, 201, 151, 0.18);
      color: var(--accent-glow);
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      margin-bottom: 14px;
      line-height: 1.3;
      color: var(--text-main);
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: var(--text-sub);
    }

    /* 板块1：斜切活力Hero旗舰大图 */
    .hero-section {
      position: relative;
      background: #0A1912;
      overflow: hidden;
      clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
      padding: 100px 0 120px;
    }
    .hero-bg-media {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.28;
      filter: saturate(1.2);
    }
    .hero-overlay-grid {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 75% 30%, rgba(32, 201, 151, 0.15) 0%, transparent 60%),
                  linear-gradient(to right, rgba(10, 25, 18, 0.96) 20%, rgba(10, 25, 18, 0.6) 100%);
    }
    .hero-inner {
      position: relative;
      z-index: 2;
      max-width: 900px;
    }
    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(32, 201, 151, 0.15);
      border: 1px solid rgba(32, 201, 151, 0.35);
      color: var(--accent-glow);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 22px;
    }
    .hero-title {
      font-size: 3.1rem;
      font-weight: 900;
      color: #ffffff;
      line-height: 1.22;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(120deg, #20C997, #00E676);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.15rem;
      color: #E2E8F0;
      line-height: 1.8;
      margin-bottom: 35px;
      max-width: 780px;
    }
    .hero-series-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 35px;
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(8px);
      padding: 12px 16px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
      width: fit-content;
    }
    .hero-series-item {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.88rem;
      color: #CBD5E1;
    }
    .hero-series-item b {
      color: var(--accent-glow);
    }
    .hero-cta-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 板块2：产品系统架构与介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .intro-image-box {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .intro-image-box img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .intro-badge-float {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(10, 25, 18, 0.9);
      color: #ffffff;
      padding: 12px 18px;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--accent);
      font-size: 0.88rem;
      backdrop-filter: blur(6px);
    }
    .intro-content h3 {
      font-size: 1.6rem;
      margin-bottom: 16px;
      color: var(--primary-dark);
    }
    .intro-content p {
      color: var(--text-muted);
      margin-bottom: 18px;
      font-size: 1rem;
      line-height: 1.7;
    }
    .intro-specs-list {
      list-style: none;
      margin-top: 20px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .intro-spec-item {
      background: #F1F7F3;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--primary-dark);
      border-left: 3px solid var(--primary-light);
    }

    /* 板块3：核心技术与功能优势 (6卡网格) */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .adv-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .adv-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }
    .adv-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(25, 135, 84, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
      color: var(--primary);
    }
    .adv-card h4 {
      font-size: 1.2rem;
      color: var(--primary-dark);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .adv-card p {
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块4：产品版本矩阵 (3列对比) */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .pricing-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 34px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: transform 0.3s ease;
    }
    .pricing-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
      transform: scale(1.03);
      z-index: 2;
    }
    .pricing-card:hover {
      transform: translateY(-4px);
    }
    .pricing-card.featured:hover {
      transform: scale(1.03) translateY(-4px);
    }
    .popular-tag {
      position: absolute;
      top: -14px;
      right: 24px;
      background: var(--highlight);
      color: #ffffff;
      padding: 4px 12px;
      font-size: 0.78rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      box-shadow: 0 2px 8px rgba(255, 152, 0, 0.35);
    }
    .pricing-tier {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 6px;
    }
    .pricing-target {
      font-size: 0.88rem;
      color: var(--text-sub);
      margin-bottom: 18px;
    }
    .pricing-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px dashed var(--border-color);
    }
    .feature-list {
      list-style: none;
      margin-bottom: 30px;
      flex-grow: 1;
    }
    .feature-item {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feature-item::before {
      content: "✓";
      color: var(--primary-light);
      font-weight: bold;
    }

    /* 板块5：深色战术理念与复盘引擎 (深墨绿背景) */
    .tactics-inner-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .tactics-mockup {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-dark);
      background: #000;
    }
    .tactics-mockup img {
      width: 100%;
      height: 360px;
      object-fit: cover;
      opacity: 0.85;
    }
    .tactics-step-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .tactics-step-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(32, 201, 151, 0.2);
      padding: 18px 22px;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
    }
    .tactics-step-item:hover {
      background: rgba(32, 201, 151, 0.08);
      border-color: var(--accent);
    }
    .tactics-step-num {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--accent-glow);
      margin-bottom: 6px;
    }
    .tactics-step-item h4 {
      font-size: 1.15rem;
      color: #ffffff;
      margin-bottom: 8px;
    }
    .tactics-step-item p {
      font-size: 0.9rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块6：俱乐部落地应用案例 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-img-wrap {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }
    .case-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .case-tag {
      font-size: 0.78rem;
      background: #E8F5E9;
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      width: fit-content;
      margin-bottom: 10px;
      font-weight: 600;
    }
    .case-body h4 {
      font-size: 1.15rem;
      color: var(--primary-dark);
      margin-bottom: 10px;
    }
    .case-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块7：关键效能数据统计条 */
    .stats-section {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
      color: #ffffff;
      padding: 55px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .stat-item {
      padding: 10px 15px;
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--accent-glow);
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .stat-label {
      font-size: 0.95rem;
      color: #E2E8F0;
      font-weight: 500;
    }

    /* 板块8：教练组与分析师口碑评价 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .review-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 14px;
    }
    .review-text {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #EDF2F7;
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: bold;
      font-size: 1.1rem;
    }
    .author-info h5 {
      font-size: 0.95rem;
      color: var(--primary-dark);
      font-weight: 700;
    }
    .author-info span {
      font-size: 0.82rem;
      color: var(--text-sub);
    }

    /* 板块9：前沿资讯与战术指南 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .insight-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .insight-thumb {
      height: 190px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .insight-card:hover .insight-thumb img {
      transform: scale(1.06);
    }
    .insight-content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-date {
      font-size: 0.8rem;      color: var(--text-sub);
      margin-bottom: 8px;
    }
    .insight-content h4 {
      font-size: 1.1rem;
      color: var(--primary-dark);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
      flex-grow: 1;
    }
    .insight-link {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .insight-link:hover {
      color: var(--accent);
    }

    /* 板块10：常见问题答疑 FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-item[open] {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--primary-dark);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: "+";
      font-size: 1.4rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item[open] .faq-summary::after {
      transform: rotate(45deg);
      color: var(--highlight);
    }
    .faq-body {
      padding: 0 24px 20px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed rgba(15, 81, 50, 0.08);
      padding-top: 14px;
    }

    /* 板块11：全域适用人群与机构覆盖 */
    .audiences-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .audience-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      transition: transform 0.25s ease;
    }
    .audience-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .audience-icon {
      width: 54px;
      height: 54px;
      margin: 0 auto 16px;
      background: #EBF7EE;
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
    }
    .audience-card h4 {
      font-size: 1.1rem;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }
    .audience-card p {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 板块12：底部行动呼吁转化区块 */
    .cta-card-box {
      background: radial-gradient(circle at top right, #198754 0%, #0A1912 85%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #ffffff;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-dark);
    }
    .cta-inner-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .cta-text-side h3 {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
    }
    .cta-text-side p {
      font-size: 1rem;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 22px;
    }
    .cta-perks {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--accent-glow);
    }
    .cta-perk-item {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .cta-form-side {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(10px);
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      color: #E2E8F0;
      margin-bottom: 6px;
      font-weight: 500;
    }
    .form-input, .form-select {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      background: rgba(255, 255, 255, 0.95);
      border: 1px solid transparent;
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--accent);
    }
    .btn-submit {
      width: 100%;
      height: 48px;
      margin-top: 10px;
      font-size: 1rem;
    }

    /* 统一页脚 */
    .site-footer {
      background-color: #07130D;
      color: #94A3B8;
      padding: 70px 0 25px;
      border-top: 1px solid rgba(32, 201, 151, 0.15);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      font-size: 0.88rem;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
      border-left: 3px solid var(--accent);
      padding-left: 8px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent-glow);
    }
    .footer-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.82rem;
    }
    .footer-cert-tags {
      display: flex;
      gap: 12px;
    }
    .footer-cert-tag {
      background: rgba(255, 255, 255, 0.06);
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 2.5rem;
      }
      .advantages-grid, .cases-grid, .insights-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .audiences-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-utility-bar {
        display: none;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-menu.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .hero-series-bar {
        width: 100%;
      }
      .intro-grid, .tactics-inner-grid, .cta-inner-layout {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .advantages-grid, .cases-grid, .insights-grid, .reviews-grid, .pricing-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .audiences-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .cta-card-box {
        padding: 35px 20px;
      }
    }

    @media (max-width: 480px) {
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .hero-cta-group {
        flex-direction: column;
        width: 100%;
      }
      .btn {
        width: 100%;
      }
    }