/* roulang page: index */
:root {
      --primary: #0E7490;
      --primary-dark: #155E75;
      --primary-light: #E0F2FE;
      --secondary: #F97316;
      --secondary-hover: #EA580C;
      --accent: #0284C7;
      --dark-slate: #0F172A;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --bg-base: #F8FAFC;
      --bg-card: #FFFFFF;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --radius-full: 9999px;
      --shadow-sm: 0 4px 6px -1px rgba(14, 116, 144, 0.05);
      --shadow-card: 0 12px 30px -5px rgba(14, 116, 144, 0.08);
      --shadow-hover: 0 20px 40px -10px rgba(14, 116, 144, 0.16);
      --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

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

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

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

    button, input, select {
      font: inherit;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: clamp(1rem, 3vw, 2rem);
      padding-right: clamp(1rem, 3vw, 2rem);
    }

    /* 顶部双行式导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 4px 20px rgba(15, 23, 42, 0.1);
    }

    .top-bar {
      background-color: rgba(15, 23, 42, 0.95);
      color: #94A3B8;
      font-size: 0.85rem;
      padding: 0.45rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .top-info-group {
      display: flex;
      align-items: center;
      gap: 1.25rem;
    }

    .main-nav-bar {
      background: linear-gradient(100deg, var(--primary) 0%, var(--accent) 100%);
      padding: 0.85rem 0;
      transition: var(--transition-smooth);
    }

    .main-nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      color: #FFFFFF;
      font-weight: 800;
      font-size: 1.45rem;
      letter-spacing: -0.5px;
    }

    .brand-icon {
      width: 36px;
      height: 36px;
      background: #FFFFFF;
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.2rem;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }

    .nav-links a {
      color: rgba(255, 255, 255, 0.92);
      font-weight: 500;
      font-size: 0.98rem;
      position: relative;
      padding: 0.35rem 0;
      transition: var(--transition-smooth);
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: #FFFFFF;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: #FFFFFF;
      box-shadow: 0 0 8px #FFFFFF;
      transition: width 0.3s ease;
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .nav-cta-btn {
      background-color: var(--secondary);
      color: #FFFFFF !important;
      padding: 0.55rem 1.35rem;
      border-radius: var(--radius-full);
      font-weight: 700;
      box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      transition: var(--transition-smooth);
    }

    .nav-cta-btn:hover {
      background-color: var(--secondary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(249, 115, 22, 0.45);
    }

    /* Section 通用规范 */
    .section-wrap {
      padding: clamp(3.5rem, 6vw, 5.5rem) 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto clamp(2rem, 4vw, 3.25rem) auto;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      padding: 0.35rem 0.95rem;
      border-radius: var(--radius-full);
      background-color: rgba(14, 116, 144, 0.1);
      color: var(--primary);
      margin-bottom: 0.85rem;
    }

    .section-badge.badge-light {
      background: rgba(255, 255, 255, 0.15);
      color: #F8FAFC;
    }

    .section-title {
      font-size: clamp(1.8rem, 3.2vw, 2.4rem);
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 0.85rem;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 1: Hero 首屏轮播 */
    .hero-section {
      background: #F1F5F9;
      padding: clamp(2.5rem, 5vw, 4rem) 0 clamp(3rem, 6vw, 4.5rem) 0;
      position: relative;
      overflow: hidden;
    }

    .hero-slider-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      position: relative;
      border: 1px solid var(--border-color);
    }

    .hero-slide {
      display: none;
      padding: clamp(2rem, 5vw, 4rem);
      background-size: cover;
      background-position: center;
      position: relative;
      align-items: center;
      min-height: 480px;
    }

    .hero-slide.active {
      display: flex;
    }

    .hero-slide-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.85) 60%, rgba(255, 255, 255, 0.3) 100%);
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 660px;
    }

    .hero-badge-tag {
      background: rgba(249, 115, 22, 0.12);
      color: var(--secondary);
      font-weight: 700;
      padding: 0.4rem 1rem;
      border-radius: var(--radius-full);
      display: inline-block;
      margin-bottom: 1.25rem;
      font-size: 0.9rem;
    }

    .hero-title {
      font-size: clamp(2.1rem, 3.8vw, 3rem);
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 1.25rem;
    }

    .hero-description {
      font-size: 1.1rem;
      color: #475569;
      line-height: 1.8;
      margin-bottom: 2rem;
    }

    .hero-cta-group {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }

    .btn-main-primary {
      background: var(--primary);
      color: #FFFFFF;
      padding: 0.85rem 2rem;
      border-radius: var(--radius-full);
      font-weight: 700;
      font-size: 1.05rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 15px rgba(14, 116, 144, 0.3);
      min-height: 48px;
    }

    .btn-main-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
    }

    .btn-main-outline {
      border: 2px solid var(--primary);
      color: var(--primary);
      background: transparent;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-full);
      font-weight: 700;
      font-size: 1.05rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition-smooth);
      min-height: 48px;
    }

    .btn-main-outline:hover {
      background: var(--primary);
      color: #FFFFFF;
    }

    .slider-indicators {
      position: absolute;
      bottom: 1.5rem;
      right: 2rem;
      z-index: 3;
      display: flex;
      gap: 0.5rem;
    }

    .slider-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: rgba(14, 116, 144, 0.25);
      cursor: pointer;
      border: none;
      transition: var(--transition-smooth);
    }

    .slider-dot.active {
      background: var(--primary);
      width: 32px;
      border-radius: var(--radius-full);
    }

    /* Section 2: 服务介绍与体测标准 */
    .bg-white {
      background-color: #FFFFFF;
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1.15fr;
      gap: clamp(2rem, 5vw, 4rem);
      align-items: center;
    }

    .intro-media-stack {
      position: relative;
    }

    .intro-main-img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    .intro-floating-card {
      position: absolute;
      bottom: -1.5rem;
      right: -1rem;
      background: #FFFFFF;
      padding: 1.5rem;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-hover);
      border-left: 5px solid var(--secondary);
      max-width: 260px;
    }

    .floating-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--secondary);
      line-height: 1.1;
    }

    .floating-text {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 0.25rem;
    }

    .intro-feature-list {
      list-style: none;
      margin-top: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1.1rem;
    }

    .intro-feature-item {
      display: flex;
      gap: 1rem;
      background: var(--bg-base);
      padding: 1rem 1.25rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .feature-icon-badge {
      background: var(--primary-light);
      color: var(--primary);
      width: 38px;
      height: 38px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      flex-shrink: 0;
    }

    /* Section 3: 核心优势矩阵 (6独立大卡) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

    .advantage-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: clamp(1.5rem, 2.5vw, 2.25rem);
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-color);
      transition: var(--transition-smooth);
      position: relative;
    }

    .advantage-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }

    .adv-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: rgba(14, 116, 144, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 1.25rem;
    }

    .advantage-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }

    .advantage-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Section 4: 热门青少年体育体系 (3张大卡) */
    .programs-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .program-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      transition: var(--transition-smooth);
    }

    .program-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-hover);
    }

    .program-img-wrapper {
      position: relative;
      height: 220px;
      overflow: hidden;
    }

    .program-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .program-card:hover .program-img {
      transform: scale(1.05);
    }

    .program-badge {
      position: absolute;
      top: 1rem;
      left: 1rem;
      background: var(--secondary);
      color: #FFFFFF;
      font-size: 0.8rem;
      font-weight: 700;
      padding: 0.35rem 0.85rem;
      border-radius: var(--radius-full);
    }

    .program-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .program-title {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 0.5rem;
    }

    .program-meta {
      display: flex;
      gap: 1rem;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
      padding-bottom: 0.75rem;
      border-bottom: 1px dashed var(--border-color);
    }

    .program-desc {
      font-size: 0.95rem;
      color: #475569;
      line-height: 1.6;
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }

    .program-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .program-btn {
      color: var(--primary);
      font-weight: 700;
      font-size: 0.95rem;
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    .program-btn:hover {
      color: var(--secondary);
    }

    /* Section 5: 深色沉浸成长特训流程 */
    .bg-dark {
      background-color: var(--dark-slate);
      color: #F8FAFC;
    }

    .bg-dark .section-title {
      color: #FFFFFF;
    }

    .bg-dark .section-subtitle {
      color: #94A3B8;
    }

    .training-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
      margin-top: 2rem;
    }

    .step-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 1.75rem 1.25rem;
      position: relative;
      transition: var(--transition-smooth);
    }

    .step-card:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: var(--secondary);
      transform: translateY(-4px);
    }

    .step-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--secondary);
      line-height: 1;
      margin-bottom: 0.75rem;
    }

    .step-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 0.5rem;
    }

    .step-detail {
      font-size: 0.9rem;
      color: #CBD5E1;
      line-height: 1.6;
    }

    /* Section 6: 青少年学员成长案例墙 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 1.75rem;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .case-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .case-user-title {
      font-weight: 800;
      font-size: 1.1rem;
    }

    .case-badge {
      background: var(--primary-light);
      color: var(--primary);
      padding: 0.2rem 0.65rem;
      border-radius: var(--radius-full);
      font-size: 0.78rem;
      font-weight: 700;
    }

    .case-stat-box {
      background: var(--bg-base);
      border-radius: var(--radius-sm);
      padding: 0.85rem;
      display: flex;
      justify-content: space-around;
      text-align: center;
    }

    .stat-label {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .stat-value {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--primary);
    }

    .case-desc {
      font-size: 0.92rem;
      color: #475569;
      line-height: 1.65;
    }

    /* Section 7: 关键运营数据条 */
    .metrics-bar {
      background: linear-gradient(135deg, var(--primary) 0%, #0369A1 100%);
      padding: 3.5rem 0;
      color: #FFFFFF;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      text-align: center;
    }

    .metric-item {
      padding: 1rem;
    }

    .metric-num {
      font-size: clamp(2.3rem, 4.5vw, 3.2rem);
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 0.35rem;
      color: #FFFFFF;
    }

    .metric-title {
      font-size: 1.05rem;
      font-weight: 600;
      opacity: 0.95;
    }

    .metric-sub {
      font-size: 0.85rem;
      opacity: 0.75;
      margin-top: 0.25rem;
    }

    /* Section 8: 家长与机构评价区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

    .testi-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 2rem;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-color);
      position: relative;
    }

    .testi-stars {
      color: #F59E0B;
      margin-bottom: 1rem;
      font-size: 1.1rem;
      letter-spacing: 2px;
    }

    .testi-content {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 1.5rem;
      font-style: italic;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 0.85rem;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }

    .author-name {
      font-weight: 700;
      font-size: 0.95rem;
    }

    .author-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* Section 9: 体育资讯与长尾知识库 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }

    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-color);
      transition: var(--transition-smooth);
    }

    .news-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .news-body {
      padding: 1.5rem;
    }

    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
    }

    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      line-height: 1.4;
      color: var(--text-main);
    }

    .news-snippet {
      font-size: 0.9rem;
      color: #64748B;
      line-height: 1.6;
      margin-bottom: 1rem;
    }

    .news-tags {
      display: flex;
      gap: 0.5rem;
      flex-wrap: wrap;
    }

    .news-tag {
      background: var(--bg-base);
      color: var(--primary);
      padding: 0.2rem 0.55rem;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      font-weight: 600;
    }

    /* Section 10: FAQ 折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .faq-item {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: var(--transition-smooth);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 1.25rem 1.5rem;
      background: transparent;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.25rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFAFA;
      color: #475569;
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 1.5rem 1.25rem 1.5rem;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* Section 11: 合作伙伴与考级认证 */
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 1.25rem;
      align-items: center;
    }

    .partner-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.25rem 0.75rem;
      text-align: center;
      font-weight: 700;
      font-size: 0.9rem;
      color: #64748B;
      transition: var(--transition-smooth);
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .partner-item:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    /* Section 12: 预约转化 CTA 表单 */
    .cta-container {
      background: linear-gradient(135deg, var(--dark-slate) 0%, #1E293B 100%);
      border-radius: var(--radius-lg);
      padding: clamp(2rem, 5vw, 4rem);
      color: #FFFFFF;
      box-shadow: var(--shadow-card);
      position: relative;
      overflow: hidden;
    }

    .cta-inner-grid {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: clamp(2rem, 4vw, 3.5rem);
      align-items: center;
    }

    .cta-form-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 2rem;
      color: var(--text-main);
    }

    .form-group {
      margin-bottom: 1.2rem;
    }

    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      margin-bottom: 0.4rem;
      color: #334155;
    }

    .form-control {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(14, 116, 144, 0.15);
    }

    .btn-submit-cta {
      width: 100%;
      background: var(--secondary);
      color: #FFFFFF;
      border: none;
      padding: 0.9rem;
      border-radius: var(--radius-sm);
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      transition: var(--transition-smooth);
      min-height: 48px;
    }

    .btn-submit-cta:hover {
      background: var(--secondary-hover);
    }

    /* 统一页脚 */
    .site-footer {
      background: #090D16;
      color: #94A3B8;
      padding: 4.5rem 0 2rem 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.92rem;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 2.5rem;
      margin-bottom: 3.5rem;
    }

    .footer-brand-title {
      color: #FFFFFF;
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 1rem;
    }

    .footer-intro {
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }

    .footer-col-title {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }

    .footer-links a:hover {
      color: #FFFFFF;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.85rem;
    }

    /* 移动端与响应式断点 */
    @media (max-width: 1024px) {
      .matrix-grid,
      .programs-grid,
      .case-grid,
      .testimonial-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .training-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .matrix-grid,
      .programs-grid,
      .case-grid,
      .testimonial-grid,
      .news-grid,
      .training-steps,
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .partner-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cta-inner-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .top-bar-inner {
        justify-content: center;
      }
      .top-info-group {
        display: none;
      }
      .intro-floating-card {
        position: static;
        margin-top: 1rem;
        max-width: 100%;
      }
    }