/* roulang page: index */
:root {
      --primary: #FF7A30;
      --primary-hover: #E86319;
      --primary-light: #FFF4E5;
      --secondary: #0FA97E;
      --secondary-light: #E6F7F2;
      --accent-blue: #3B82F6;
      --accent-blue-light: #EBF3FE;
      --dark-bg: #16222F;
      --dark-card: #203142;
      --text-main: #242E39;
      --text-muted: #5C6B7B;
      --text-light: #94A3B8;
      --bg-page: #FAF9F6;
      --bg-white: #FFFFFF;
      --border-color: #EDE8E1;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-full: 9999px;
      --shadow-sm: 0 4px 12px rgba(255, 122, 48, 0.06);
      --shadow-md: 0 12px 32px -8px rgba(255, 122, 48, 0.12);
      --shadow-lg: 0 20px 40px -12px rgba(36, 46, 57, 0.1);
      --shadow-dark: 0 16px 36px rgba(0, 0, 0, 0.25);
      --transition: all 0.3s ease;
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    ul, ol {
      list-style: none;
    }

    button, input, textarea, select {
      font-family: inherit;
      font-size: inherit;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部双行导航 */
    .top-bar {
      background-color: #2D3748;
      color: #CBD5E1;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .top-bar-badge {
      background-color: rgba(255, 122, 48, 0.2);
      color: #FFA16C;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), #FF9F66);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: bold;
      box-shadow: 0 4px 10px rgba(255, 122, 48, 0.3);
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-link {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      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: 3px;
      background-color: var(--primary);
      border-radius: 2px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-weight: 700;
      border-radius: var(--radius-full);
      cursor: pointer;
      border: 2px solid transparent;
      transition: var(--transition);
      text-align: center;
      line-height: 1.2;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 8px 20px rgba(255, 122, 48, 0.28);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(255, 122, 48, 0.35);
    }

    .btn-secondary {
      background-color: var(--bg-white);
      color: var(--primary);
      border-color: var(--primary);
    }

    .btn-secondary:hover {
      background-color: var(--primary-light);
      transform: translateY(-2px);
    }

    .btn-outline-white {
      background-color: transparent;
      color: #FFFFFF;
      border-color: rgba(255, 255, 255, 0.6);
    }

    .btn-outline-white:hover {
      background-color: rgba(255, 255, 255, 0.15);
      border-color: #FFFFFF;
      transform: translateY(-2px);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 通用板块样式 */
    section {
      padding: 96px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 56px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .section-badge.secondary {
      background-color: var(--secondary-light);
      color: var(--secondary);
    }

    .section-badge.dark {
      background-color: rgba(255, 255, 255, 0.12);
      color: #FFA16C;
    }

    .section-title {
      font-size: 2.35rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 18px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 1. Hero 影视海报沉浸暗底视觉 */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #0F1722 0%, #16222F 100%);
      color: #FFFFFF;
      padding: 100px 0 120px 0;
      overflow: hidden;
    }

    .hero-bg-media {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      opacity: 0.22;
      object-fit: cover;
      filter: blur(2px);
    }

    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content {
      max-width: 640px;
    }

    .hero-badge-group {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 24px;
      flex-wrap: wrap;
    }

    .hero-tag {
      background: rgba(255, 122, 48, 0.25);
      border: 1px solid var(--primary);
      color: #FFB385;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 600;
    }

    .hero-heat-badge {
      background: rgba(255, 255, 255, 0.1);
      color: #CBD5E1;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-title {
      font-size: 3.2rem;
      font-weight: 800;
      line-height: 1.22;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: linear-gradient(90deg, #FF9F66, #FF7A30);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-description {
      font-size: 1.12rem;
      color: #CBD5E1;
      margin-bottom: 36px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      gap: 18px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .hero-poster-frame {
      position: relative;
      border-radius: var(--radius-lg);
      padding: 12px;
      background: rgba(255, 255, 255, 0.06);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
    }

    .hero-poster-img {
      width: 100%;
      height: 480px;
      object-fit: cover;
      border-radius: var(--radius-md);
    }

    .hero-poster-overlay {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(15, 23, 34, 0.85);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 2. 全球与区域覆盖 / 痛点剖析 */
    .pain-section {
      background-color: var(--bg-white);
    }

    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .pain-card {
      background: var(--bg-page);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .pain-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 122, 48, 0.3);
    }

    .pain-card-icon {
      width: 56px;
      height: 56px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 20px;
    }

    .pain-card-title {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .pain-card-text {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.7;
    }

    /* 3. 场景卡板块 */
    .scene-section {
      background-color: var(--bg-page);
    }

    .scene-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 36px;
    }

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

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

    .scene-media {
      height: 240px;
      overflow: hidden;
    }

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

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

    .scene-body {
      padding: 32px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .scene-tag {
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--secondary);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .scene-title {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .scene-desc {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    /* 4. 本地化体系与教研标准 */
    .about-section {
      background-color: var(--bg-white);
    }

    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .about-visual {
      position: relative;
    }

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

    .about-stat-card {
      position: absolute;
      bottom: -24px;
      right: -20px;
      background: var(--bg-white);
      padding: 24px 30px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

    .about-stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 4px;
    }

    .about-stat-lbl {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .about-points {
      margin-top: 28px;
      display: grid;
      gap: 16px;
    }

    .about-point-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }

    .point-dot {
      width: 22px;
      height: 22px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 3px;
    }

    /* 5. 核心优势矩阵 */
    .advantages-section {
      background-color: var(--bg-page);
    }

    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .advantage-box {
      background: var(--bg-white);
      padding: 32px 26px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .advantage-box:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 122, 48, 0.4);
    }

    .advantage-header {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 16px;
    }

    .advantage-icon {
      width: 48px;
      height: 48px;
      background: var(--secondary-light);
      color: var(--secondary);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: bold;
    }

    .advantage-title {
      font-size: 1.2rem;
      font-weight: 700;
    }

    .advantage-text {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* 6. 课程与阶段产品 */
    .courses-section {
      background-color: var(--bg-white);
    }

    .courses-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

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

    .course-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .course-media {
      height: 200px;
      position: relative;
    }

    .course-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .course-age-pill {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(255, 255, 255, 0.92);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.82rem;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    .course-content {
      padding: 30px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .course-title {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .course-summary {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .course-specs {
      border-top: 1px dashed var(--border-color);
      padding-top: 18px;
      margin-bottom: 24px;
      font-size: 0.88rem;
      color: var(--text-main);
      display: grid;
      gap: 8px;
    }

    .course-action {
      margin-top: auto;
    }

    /* 7. 深色沉浸式教育理念区 */
    .dark-philosophy-section {
      background-color: var(--dark-bg);
      color: #FFFFFF;
      padding: 110px 0;
    }

    .dark-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .philosophy-text-block .section-title {
      color: #FFFFFF;
    }

    .philosophy-text-block .section-desc {
      color: #94A3B8;
    }

    .dark-card-box {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-dark);
    }

    .dark-card-quote {
      font-size: 1.15rem;
      line-height: 1.8;
      color: #E2E8F0;
      font-style: italic;
      margin-bottom: 24px;
    }

    .dark-author {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .dark-author-avatar {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      border: 2px solid var(--primary);
      object-fit: cover;
    }

    /* 8. 教学闭环四步法 */
    .method-section {
      background-color: var(--bg-white);
    }

    .method-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-card {
      background: var(--bg-page);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      border: 1px solid var(--border-color);
      position: relative;
      transition: var(--transition);
    }

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

    .step-badge {
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 18px;
    }

    .step-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .step-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 9. 学员成长故事与案例 */
    .stories-section {
      background-color: var(--bg-page);
    }

    .stories-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 36px;
    }

    .story-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      box-shadow: var(--shadow-sm);
    }

    .story-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .story-body {
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .story-child {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .story-age {
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 14px;
    }

    .story-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 10. 关键成效指标 */
    .metrics-section {
      background: linear-gradient(135deg, #FF7A30, #FF9F66);
      color: #FFFFFF;
      padding: 70px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }

    .metric-item {
      padding: 16px;
    }

    .metric-value {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .metric-label {
      font-size: 1.05rem;
      color: rgba(255, 255, 255, 0.9);
      font-weight: 600;
    }

    /* 11. 家长口碑与评价墙 */
    .testimonials-section {
      background-color: var(--bg-white);
    }

    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .testimonial-bubble {
      background: var(--bg-page);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .stars {
      color: #FBBF24;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .testimonial-text {
      color: var(--text-main);
      font-size: 0.96rem;
      line-height: 1.7;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .parent-info {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .parent-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      object-fit: cover;
    }

    .parent-name {
      font-size: 1rem;
      font-weight: 700;
    }

    .parent-role {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* 12. 育儿专题资讯与 FAQ/转化 */
    .news-faq-section {
      background-color: var(--bg-page);
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      margin-bottom: 80px;
    }

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

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

    .news-img {
      height: 190px;
      object-fit: cover;
      width: 100%;
    }

    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .news-date {
      font-size: 0.82rem;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-excerpt {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .news-link {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--primary);
    }

    /* FAQ 手风琴与 CTA 组合 */
    .faq-cta-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 48px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item details {
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item details[open] {
      border-color: rgba(255, 122, 48, 0.4);
    }

    .faq-item summary {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 1.05rem;
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: '+';
      font-size: 1.3rem;
      color: var(--primary);
      font-weight: 400;
      transition: transform 0.2s ease;
    }

    .faq-item details[open] summary::after {
      content: '−';
    }

    .faq-answer {
      padding: 0 24px 20px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .cta-form-box {
      background: var(--primary-light);
      border-radius: var(--radius-md);
      padding: 36px;
      border: 1px solid rgba(255, 122, 48, 0.2);
    }

    .form-title {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .form-subtitle {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .consult-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group input, .form-group select {
      width: 100%;
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      background-color: var(--bg-white);
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }

    .form-group input:focus, .form-group select:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(255, 122, 48, 0.15);
    }

    /* 页脚 */
    .site-footer {
      background-color: #1A222C;
      color: #94A3B8;
      padding: 80px 0 36px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.95rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 60px;
    }

    .footer-brand .logo {
      color: #FFFFFF;
      margin-bottom: 18px;
    }

    .footer-brand p {
      line-height: 1.8;
      margin-bottom: 20px;
      color: #94A3B8;
    }

    .footer-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-links a:hover {
      color: var(--primary);
    }

    .footer-contact-item {
      display: flex;
      gap: 10px;
      margin-bottom: 12px;
      line-height: 1.6;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.88rem;
    }

    /* 移动端响应式 */
    @media (max-width: 1024px) {
      .hero-grid, .about-split, .dark-split, .faq-cta-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-title {
        font-size: 2.6rem;
      }
      .hero-poster-frame {
        max-width: 600px;
        margin: 0 auto;
      }
      .pain-grid, .advantages-grid, .courses-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .method-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 64px 0;
      }
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-color);
        gap: 18px;
        align-items: flex-start;
      }
      .nav-menu.show {
        display: flex;
      }
      .nav-btn-hide {
        display: none;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.85rem;
      }
      .pain-grid, .scene-grid, .advantages-grid, .courses-grid, .stories-grid, .testimonials-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .method-steps {
        grid-template-columns: 1fr;
      }
      .story-card {
        grid-template-columns: 1fr;
      }
      .story-img {
        height: 220px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .faq-cta-wrapper {
        padding: 24px;
      }
      .about-stat-card {
        position: static;
        margin-top: 16px;
      }
    }