/* roulang page: index */
:root {
      --color-primary: #0A5C36;
      --color-primary-dark: #064025;
      --color-primary-light: #10B981;
      --color-accent: #CCFF00;
      --color-accent-amber: #F59E0B;
      --color-dark: #0F172A;
      --color-dark-card: #1E293B;
      --color-dark-border: #334155;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-alt: #F1F5F9;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 6px 20px -2px rgba(15, 23, 42, 0.07);
      --shadow-lg: 0 16px 36px -4px rgba(15, 23, 42, 0.12);
      --container-max: 1240px;
      --transition: all 0.25s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: system-ui, -apple-system, "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;
      font-size: 16px;
      overflow-x: hidden;
    }

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

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

    button, input, select, textarea {
      font: inherit;
    }

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

    /* 顶部双行导航 */
    .top-bar {
      background-color: #072617;
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 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: 12px;
    }
    .top-info-group {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-info-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .badge-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(16, 185, 129, 0.15);
      color: #34D399;
      padding: 2px 8px;
      border-radius: 99px;
      font-size: 12px;
    }
    .badge-status::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #34D399;
    }

    .main-nav-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 20px;
      color: var(--color-primary-dark);
      letter-spacing: -0.5px;
    }
    .logo-mark {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 900;
      font-size: 20px;
      box-shadow: 0 4px 12px rgba(10, 92, 54, 0.25);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      padding: 8px 4px;
      position: relative;
    }
    .nav-item a:hover {
      color: var(--color-primary);
    }
    .nav-item a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--color-primary);
      transition: var(--transition);
    }
    .nav-item a:hover::after {
      width: 100%;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-nav-trial {
      background: var(--color-primary);
      color: #FFF;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
      border: 1px solid var(--color-primary);
    }
    .btn-nav-trial:hover {
      background: var(--color-primary-dark);
      box-shadow: 0 4px 14px rgba(10, 92, 54, 0.3);
    }

    /* 移动端菜单切换 */
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 通用区块排版 */
    .section-block {
      padding: 88px 0;
    }
    .section-block-alt {
      background-color: var(--bg-alt);
    }
    .section-block-white {
      background-color: var(--bg-white);
    }
    .section-block-dark {
      background-color: var(--color-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .badge-section {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 99px;
      background: rgba(16, 185, 129, 0.12);
      color: var(--color-primary);
      margin-bottom: 12px;
    }
    .section-block-dark .badge-section {
      background: rgba(204, 255, 0, 0.15);
      color: var(--color-accent);
    }
    .section-title {
      font-size: clamp(1.75rem, 3.2vw, 2.35rem);
      font-weight: 800;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-block-dark .section-title {
      color: #FFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-block-dark .section-desc {
      color: #94A3B8;
    }

    /* 板块一：全宽浅色顶栏 + 矮横幅 Hero */
    .hero-strip {
      background: #E8F5E9;
      border-bottom: 1px solid #C8E6C9;
      padding: 12px 0;
      font-size: 14px;
      color: #1B5E20;
    }
    .hero-strip-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .hero-compact {
      background: linear-gradient(135deg, #F0FDF4 0%, #FFFFFF 60%, #ECFDF5 100%);
      padding: 56px 0 64px;
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: clamp(2.1rem, 4.2vw, 3.2rem);
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      color: var(--color-primary);
    }
    .hero-lead {
      font-size: 1.08rem;
      color: var(--text-muted);
      line-height: 1.85;
      margin-bottom: 28px;
    }
    .hero-cta-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 32px;
    }
    .btn-primary {
      background: var(--color-primary);
      color: #FFF;
      padding: 14px 28px;
      font-size: 16px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
      border: 1px solid var(--color-primary);
    }
    .btn-primary:hover {
      background: var(--color-primary-dark);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .btn-secondary {
      background: #FFF;
      color: var(--text-main);
      padding: 14px 26px;
      font-size: 16px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
      border: 1px solid var(--border-color);
    }
    .btn-secondary:hover {
      background: var(--bg-alt);
      border-color: #CBD5E1;
    }
    .hero-feature-tags {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .hero-tag {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-light);
      font-weight: 600;
    }
    .hero-tag-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-primary-light);
    }
    .hero-visual {
      position: relative;
    }
    .hero-img-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 4px solid #FFFFFF;
      background: #000;
    }
    .hero-floating-stat {
      position: absolute;
      bottom: -18px;
      left: 20px;
      background: #FFFFFF;
      padding: 14px 22px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
      border-left: 5px solid var(--color-primary);
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .stat-pill-num {
      font-size: 24px;
      font-weight: 800;
      color: var(--color-primary);
      line-height: 1;
    }
    .stat-pill-label {
      font-size: 12px;
      color: var(--text-light);
      line-height: 1.3;
    }

    /* 板块二：问题陈述 */
    .problem-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 32px;
    }
    .problem-card {
      background: #FFF;
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .problem-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .problem-card-num {
      font-size: 32px;
      font-weight: 900;
      color: #E2E8F0;
      line-height: 1;
      margin-bottom: 12px;
    }
    .problem-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .problem-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块三：系统架构与技术底座 */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .arch-image-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }
    .arch-points-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 18px;
      margin-top: 24px;
    }
    .arch-point-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }
    .arch-point-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(16, 185, 129, 0.15);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .arch-point-text strong {
      display: block;
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .arch-point-text p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块四：操作演示与流程步骤 */
    .steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-box {
      background: #FFF;
      padding: 28px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .step-badge {
      display: inline-block;
      width: 36px;
      height: 36px;
      line-height: 36px;
      text-align: center;
      background: var(--color-primary);
      color: #FFF;
      font-weight: 800;
      border-radius: 8px;
      margin-bottom: 18px;
    }
    .step-box h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .step-box p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块五：六大技术优势（Grid 3x2） */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: #FFF;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--color-primary-light);
    }
    .feature-icon-badge {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(10, 92, 54, 0.08);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块六：前后对比 (Before / After) */
    .comparison-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .compare-card {
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid;
    }
    .compare-before {
      background: #FFF5F5;
      border-color: #FED7D7;
    }
    .compare-after {
      background: #F0FDF4;
      border-color: #BBF7D0;
    }
    .compare-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 20px;
      padding-bottom: 14px;
      border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
    }
    .compare-tag {
      font-size: 13px;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 99px;
    }
    .compare-before .compare-tag {
      background: #FEE2E2;
      color: #991B1B;
    }
    .compare-after .compare-tag {
      background: #DCFCE7;
      color: #166534;
    }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .compare-list li {
      font-size: 15px;
      line-height: 1.6;
      color: var(--text-muted);
      position: relative;
      padding-left: 24px;
    }
    .compare-before .compare-list li::before {
      content: "✕";
      position: absolute;
      left: 0;
      color: #DC2626;
      font-weight: bold;
    }
    .compare-after .compare-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: #16A34A;
      font-weight: bold;
    }

    /* 板块七：版本矩阵 (Cards 1x3) */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .pricing-card {
      background: #FFF;
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .pricing-card.featured {
      border: 2px solid var(--color-primary);
      box-shadow: 0 12px 30px rgba(10, 92, 54, 0.12);
      transform: scale(1.02);
    }
    .pricing-badge-popular {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--color-accent);
      color: #064025;
      font-weight: 800;
      font-size: 12px;
      padding: 4px 16px;
      border-radius: 99px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    .pricing-name {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .pricing-desc {
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 24px;
      min-height: 42px;
    }
    .pricing-features {
      list-style: none;
      margin: 24px 0;
      display: flex;
      flex-direction: column;
      gap: 12px;
      flex-grow: 1;
    }
    .pricing-features li {
      font-size: 14px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-features li::before {
      content: "•";
      color: var(--color-primary-light);
      font-size: 20px;
      line-height: 0;
    }
    .btn-pricing {
      width: 100%;
      text-align: center;
      padding: 12px 0;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 15px;
      margin-top: auto;
    }
    .pricing-card.featured .btn-pricing {
      background: var(--color-primary);
      color: #FFF;
    }
    .pricing-card.featured .btn-pricing:hover {
      background: var(--color-primary-dark);
    }
    .pricing-card:not(.featured) .btn-pricing {
      background: var(--bg-alt);
      color: var(--text-main);
      border: 1px solid var(--border-color);
    }
    .pricing-card:not(.featured) .btn-pricing:hover {
      background: #E2E8F0;
    }

    /* 板块八：深色沉浸式生物力学解析 */
    .biomech-grid {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
    }
    .biomech-visual {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--color-dark-border);
    }
    .kinetic-chain-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }
    .kinetic-item {
      background: var(--color-dark-card);
      padding: 18px 20px;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--color-accent);
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .kinetic-item-title {
      font-size: 16px;
      font-weight: 700;
      color: #FFF;
      display: flex;
      justify-content: space-between;
    }
    .kinetic-item-title span {
      color: var(--color-accent);
      font-size: 13px;
    }
    .kinetic-item-desc {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块九：实战案例与训练成效 */
    .case-story-card {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #FFF;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-bottom: 32px;
    }
    .case-story-card:last-child {
      margin-bottom: 0;
    }
    .case-img-box {
      position: relative;
      min-height: 320px;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content-box {
      padding: 40px 36px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--color-primary);
      background: rgba(10, 92, 54, 0.08);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      width: fit-content;
    }
    .case-content-box h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .case-content-box p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 20px;
    }
    .case-metrics {
      display: flex;
      gap: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 18px;
    }
    .case-metric-item strong {
      font-size: 22px;
      font-weight: 800;
      color: var(--color-primary);
      display: block;
    }
    .case-metric-item span {
      font-size: 13px;
      color: var(--text-light);
    }

    /* 板块十：业务数据统计条 (Counter Strip) */
    .counter-strip {
      background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
      color: #FFF;
      padding: 48px 0;
    }
    .counter-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .counter-item {
      padding: 0 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.15);
    }
    .counter-item:last-child {
      border-right: none;
    }
    .counter-number {
      font-size: clamp(2rem, 3.5vw, 2.8rem);
      font-weight: 900;
      color: var(--color-accent);
      line-height: 1.2;
      margin-bottom: 6px;
    }
    .counter-label {
      font-size: 14px;
      color: #E2E8F0;
      font-weight: 500;
    }

    /* 板块十一：教练员与机构真实评价 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFF;
      padding: 32px 26px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 16px;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-alt);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
      flex-shrink: 0;
      border: 1px solid var(--border-color);
    }
    .reviewer-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .reviewer-info span {
      font-size: 13px;
      color: var(--text-light);
      display: block;
    }

    /* 板块十二：动态与技术报告摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .news-img {
      height: 180px;
      overflow: hidden;
      background: #E2E8F0;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .news-card:hover .news-img img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .news-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 14px;
      font-weight: 700;
      color: var(--color-primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      margin-top: auto;
    }

    /* 板块十三：常见异议与 FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #FFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .faq-item details {
      width: 100%;
    }
    .faq-item summary {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      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: 20px;
      font-weight: 400;
      color: var(--text-light);
      transition: var(--transition);
    }
    .faq-item details[open] summary::after {
      transform: rotate(45deg);
      color: var(--color-primary);
    }
    .faq-answer {
      padding: 0 24px 22px 24px;
      font-size: 14.5px;
      color: var(--text-muted);
      line-height: 1.8;
      border-top: 1px solid #F1F5F9;
      margin-top: 6px;
      padding-top: 16px;
    }

    /* 板块十四：保障与服务体系条 */
    .assurance-strip {
      background: #FFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 36px 0;
    }
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .assurance-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .assurance-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(16, 185, 129, 0.12);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      flex-shrink: 0;
    }
    .assurance-text h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }
    .assurance-text p {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.4;
    }

    /* 板块十五：强力落地转化与预约表单 */
    .conversion-panel {
      background: linear-gradient(135deg, #09472A 0%, #0F172A 100%);
      border-radius: var(--radius-xl);
      padding: 56px 48px;
      color: #FFF;
      box-shadow: var(--shadow-lg);
    }
    .conversion-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .conversion-info h2 {
      font-size: clamp(1.8rem, 3.2vw, 2.4rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .conversion-info p {
      font-size: 15.5px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .form-box {
      background: #FFFFFF;
      padding: 32px 28px;
      border-radius: var(--radius-lg);
      color: var(--text-main);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13.5px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 14.5px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(10, 92, 54, 0.15);
    }
    .btn-submit {
      width: 100%;
      background: var(--color-primary);
      color: #FFF;
      border: none;
      padding: 13px;
      border-radius: var(--radius-sm);
      font-size: 16px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      margin-top: 8px;
    }
    .btn-submit:hover {
      background: var(--color-primary-dark);
      box-shadow: 0 4px 14px rgba(10, 92, 54, 0.3);
    }
    .form-note {
      font-size: 12px;
      color: var(--text-light);
      text-align: center;
      margin-top: 10px;
    }

    /* 页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      font-size: 14px;
      padding: 72px 0 32px;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 18px;
    }
    .footer-brand-title {
      font-size: 18px;
      font-weight: 800;
      color: #FFF;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-desc {
      line-height: 1.8;
      margin-bottom: 16px;
      color: #94A3B8;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #FFF;
      padding-left: 4px;
    }
    .footer-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-contact-list li strong {
      color: #E2E8F0;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }
    .footer-legal-links {
      display: flex;
      gap: 18px;
    }

    /* 浮动操作条 */
    .floating-widget {
      position: fixed;
      bottom: 24px;
      right: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 990;
    }
    .widget-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--color-primary);
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
      border: 2px solid #FFF;
      cursor: pointer;
      font-size: 18px;
      font-weight: 800;
      transition: var(--transition);
    }
    .widget-btn:hover {
      background: var(--color-primary-dark);
      transform: translateY(-3px);
    }

    /* 响应式样式适配 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-wrapper, .comparison-container, .biomech-grid, .conversion-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .features-grid, .pricing-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .counter-grid, .assurance-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .case-story-card {
        grid-template-columns: 1fr;
      }
      .case-img-box {
        height: 260px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .nav-action .btn-nav-trial {
        padding: 8px 14px;
        font-size: 13px;
      }
      .section-block {
        padding: 56px 0;
      }
      .problem-grid, .steps-row, .features-grid, .pricing-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .counter-grid, .assurance-grid {
        grid-template-columns: 1fr;
      }
      .counter-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        padding-bottom: 16px;
      }
      .counter-item:last-child {
        border-bottom: none;
      }
      .conversion-panel {
        padding: 32px 20px;
      }
      .form-box {
        padding: 24px 18px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }