/* roulang page: index */
:root {
      --primary: #1B4332;
      --primary-light: #2D6A4F;
      --primary-soft: #D8F3DC;
      --secondary: #E07A5F;
      --secondary-hover: #C9664C;
      --accent: #D4A373;
      --dark: #081C15;
      --dark-card: #132A22;
      --text-main: #2D3748;
      --text-muted: #64748B;
      --bg-light: #F8F9FA;
      --bg-sage: #F3F6F4;
      --white: #FFFFFF;
      --border-light: rgba(45, 106, 79, 0.12);
      --shadow-sm: 0 4px 12px rgba(27, 67, 50, 0.04);
      --shadow-md: 0 10px 30px -5px rgba(27, 67, 50, 0.08);
      --shadow-lg: 0 20px 40px -10px rgba(8, 28, 21, 0.16);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s 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-light);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    }

    .top-bar {
      background: var(--dark);
      color: #A3B18A;
      font-size: 0.85rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .top-meta span {
      margin-right: 18px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .main-nav {
      padding: 16px 0;
    }
    .main-nav .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      font-size: 1.55rem;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary-light);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text-main);
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary-light);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--secondary);
      transition: var(--transition);
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 26px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      min-height: 46px;
    }
    .btn-primary {
      background-color: var(--secondary);
      color: var(--white);
      box-shadow: 0 4px 14px rgba(224, 122, 95, 0.35);
    }
    .btn-primary:hover {
      background-color: var(--secondary-hover);
      transform: translateY(-2px);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: transparent;
    }
    .btn-outline:hover {
      background: var(--primary-soft);
      border-color: var(--primary-light);
    }
    .btn-white {
      background: var(--white);
      color: var(--primary);
    }
    .btn-white:hover {
      background: #F0F3F1;
      transform: translateY(-2px);
    }

    /* 模块通用样式 */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      background: var(--primary-soft);
      color: var(--primary);
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 18px;
      line-height: 1.3;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 1. Hero 品牌大图叙事 */
    .hero-section {
      position: relative;
      min-height: 640px;
      display: flex;
      align-items: center;
      padding: 110px 0;
      background: linear-gradient(135deg, rgba(8, 28, 21, 0.88), rgba(27, 67, 50, 0.82)), url('/assets/images/621ddb9554f91b34.webp') center/cover no-repeat;
      color: var(--white);
    }
    .hero-content {
      max-width: 820px;
    }
    .hero-title {
      font-size: 3.2rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      color: var(--accent);
    }
    .hero-desc {
      font-size: 1.18rem;
      color: #E2E8F0;
      line-height: 1.85;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 2. 倒计时特惠条 */
    .countdown-section {
      background: var(--primary-light);
      color: var(--white);
      padding: 34px 0;
      box-shadow: inset 0 2px 10px rgba(0,0,0,0.1);
    }
    .countdown-wrap {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }
    .countdown-text h3 {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .countdown-text p {
      font-size: 0.92rem;
      color: #D8F3DC;
    }
    .timer-boxes {
      display: flex;
      gap: 12px;
      align-items: center;
    }
    .time-unit {
      background: var(--dark);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      text-align: center;
      min-width: 58px;
    }
    .time-unit .num {
      display: block;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.1;
    }
    .time-unit .label {
      font-size: 0.75rem;
      color: #A3B18A;
    }

    /* 3. 活动亮点墙 */
    .highlights-section {
      background: var(--bg-sage);
    }
    .highlights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .highlight-card {
      background: var(--white);
      padding: 36px 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .highlight-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }
    .highlight-icon {
      width: 54px;
      height: 54px;
      border-radius: 12px;
      background: var(--primary-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 22px;
    }
    .highlight-icon svg {
      width: 28px;
      height: 28px;
      fill: var(--primary);
    }
    .highlight-card h4 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .highlight-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 4. 专属调理礼包与权益 */
    .benefits-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .benefit-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .benefit-item:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .benefit-thumb {
      height: 180px;
      overflow: hidden;
    }
    .benefit-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .benefit-item:hover .benefit-thumb img {
      transform: scale(1.06);
    }
    .benefit-body {
      padding: 24px;
      flex-grow: 1;
    }
    .benefit-body h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .benefit-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. 科学评估玩法步骤 */
    .steps-section {
      background: var(--white);
    }
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      position: relative;
      background: var(--bg-sage);
      padding: 32px 24px;
      border-radius: var(--radius-md);
      border-top: 4px solid var(--primary-light);
    }
    .step-badge {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--primary-light);
      opacity: 0.35;
      margin-bottom: 14px;
      line-height: 1;
    }
    .step-card h4 {
      font-size: 1.2rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 12px;
    }
    .step-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
    }

    /* 6. 核心优势与吸收机制（深色沉浸） */
    .mechanism-section {
      background: var(--dark);
      color: var(--white);
    }
    .mechanism-section .section-title {
      color: var(--white);
    }
    .mechanism-section .section-subtitle {
      color: #A3B18A;
    }
    .mechanism-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .mechanism-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(255,255,255,0.1);
    }
    .mechanism-info h3 {
      font-size: 1.8rem;
      color: var(--accent);
      margin-bottom: 18px;
      line-height: 1.35;
    }
    .mechanism-info p {
      color: #CBD5E1;
      margin-bottom: 24px;
      font-size: 1rem;
    }
    .check-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.96rem;
      color: #E2E8F0;
    }
    .check-list svg {
      width: 20px;
      height: 20px;
      fill: var(--accent);
      flex-shrink: 0;
      margin-top: 3px;
    }

    /* 7. 方案奖励与配方预览 */
    .preview-section {
      background: var(--bg-light);
    }
    .preview-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .preview-card {
      background: var(--white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .preview-card .img-box {
      height: 220px;
      overflow: hidden;
    }
    .preview-card .img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .preview-content {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .preview-tag {
      font-size: 0.8rem;
      color: var(--secondary);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .preview-content h4 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .preview-content p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    /* 8. 效能数据指标条 */
    .metrics-section {
      background: var(--primary);
      color: var(--white);
      padding: 65px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item .val {
      font-size: 3rem;
      font-weight: 900;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 8px;
      font-family: Arial, sans-serif;
    }
    .metric-item .lbl {
      font-size: 1rem;
      color: var(--primary-soft);
      font-weight: 500;
    }

    /* 9. 营养健康前沿资讯 */
    .news-section {
      background: var(--white);
    }
    .news-layout {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 40px;
    }
    .featured-article {
      background: var(--bg-sage);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
    }
    .featured-article img {
      width: 100%;
      height: 260px;
      object-fit: cover;
    }
    .featured-article .inner {
      padding: 30px;
    }
    .featured-article h4 {
      font-size: 1.35rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 12px;
    }
    .featured-article p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .news-card-mini {
      display: flex;
      gap: 18px;
      background: var(--bg-light);
      padding: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
      align-items: center;
    }
    .news-card-mini img {
      width: 100px;
      height: 80px;
      border-radius: 6px;
      object-fit: cover;
      flex-shrink: 0;
    }
    .news-card-mini h5 {
      font-size: 1.05rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 6px;
      line-height: 1.4;
    }
    .news-card-mini p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 10. 用户口碑与蜕变故事 */
    .reviews-section {
      background: var(--bg-sage);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .review-bubble {
      background: var(--white);
      padding: 34px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 14px;
    }
    .review-text {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.75;
      margin-bottom: 20px;
      font-style: italic;
    }
    .user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #EEF2F0;
      padding-top: 16px;
    }
    .avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }
    .user-meta h5 {
      font-size: 0.95rem;
      color: var(--primary);
      font-weight: 700;
    }
    .user-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 11. 权威资质与机构认证背书 */
    .partners-section {
      background: var(--white);
      padding: 60px 0;
      border-top: 1px solid #E2E8F0;
      border-bottom: 1px solid #E2E8F0;
    }
    .partners-bar {
      display: flex;
      justify-content: space-around;
      align-items: center;
      flex-wrap: wrap;
      gap: 30px;
    }
    .partner-item {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-muted);
      font-weight: 600;
      font-size: 1.05rem;
      filter: grayscale(100%);
      opacity: 0.7;
      transition: var(--transition);
    }
    .partner-item:hover {
      filter: grayscale(0%);
      opacity: 1;
      color: var(--primary);
    }
    .partner-icon {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--bg-sage);
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* 12. 报名测评与定制咨询收口区 */
    .cta-section {
      background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
      color: var(--white);
      padding: 100px 0;
    }
    .cta-box {
      max-width: 860px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      backdrop-filter: blur(12px);
      box-shadow: var(--shadow-lg);
    }
    .cta-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 36px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 0.9rem;
      color: #E2E8F0;
      font-weight: 500;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.08);
      color: var(--white);
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
    }
    .form-select option {
      background: var(--dark);
      color: var(--white);
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.15);
    }
    .form-submit {
      grid-column: span 2;
      margin-top: 10px;
    }
    .form-submit .btn {
      width: 100%;
      padding: 16px;
      font-size: 1.1rem;
    }
    .form-hint {
      text-align: center;
      font-size: 0.85rem;
      color: #A3B18A;
      margin-top: 16px;
    }

    /* 统一页脚 */
    .site-footer {
      background: #05140F;
      color: #8E9D94;
      padding: 80px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: var(--white);
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 22px;
      letter-spacing: 0.5px;
    }
    .footer-desc {
      line-height: 1.8;
      margin-bottom: 20px;
      font-size: 0.92rem;
      color: #94A3B8;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a {
      color: #8E9D94;
    }
    .footer-links a:hover {
      color: var(--white);
      padding-left: 4px;
    }
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 14px;
      line-height: 1.6;
    }
    .footer-contact-item svg {
      width: 18px;
      height: 18px;
      fill: var(--accent);
      flex-shrink: 0;
      margin-top: 3px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      text-align: center;
      font-size: 0.85rem;
      line-height: 1.8;
    }
    .footer-compliance {
      margin-top: 8px;
      color: #64748B;
      font-size: 0.8rem;
    }

    /* 移动端汉堡按钮与交互 */
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .mobile-toggle svg {
      width: 28px;
      height: 28px;
      stroke: var(--primary);
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 2.5rem;
      }
      .highlights-grid, .preview-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .benefits-grid, .steps-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .news-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-md);
        gap: 18px;
        border-top: 1px solid var(--border-light);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-cta-btn {
        display: none;
      }
      .hero-section {
        padding: 70px 0;
        min-height: auto;
      }
      .hero-title {
        font-size: 2rem;
      }
      .highlights-grid, .benefits-grid, .steps-timeline, .preview-grid, .reviews-grid {
        grid-template-columns: 1fr;
      }
      .mechanism-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .cta-form {
        grid-template-columns: 1fr;
      }
      .form-group.full-width, .form-submit {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
    }