/* roulang page: index */
:root {
      --primary: #10B981;
      --primary-dark: #059669;
      --accent: #F97316;
      --accent-hover: #EA580C;
      --dark-slate: #0F172A;
      --slate-panel: #1E293B;
      --slate-border: #334155;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.06);
      --shadow-lg: 0 20px 30px -10px rgba(0,0,0,0.1);
      --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease-in-out;
    }

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

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部通知条 */
    .topbar {
      background-color: var(--dark-slate);
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 0.45rem 0;
      border-bottom: 1px solid var(--slate-border);
    }
    .topbar-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .topbar-info {
      display: flex;
      gap: 1.25rem;
    }
    .topbar-highlight {
      color: var(--primary);
      font-weight: 600;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--dark-slate);
      letter-spacing: -0.02em;
    }
    .brand-icon-box {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 1.75rem;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: #334155;
      padding: 0.5rem 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-dark);
    }
    .nav-link:hover::after, .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .header-action {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .btn-download-nav {
      background-color: var(--primary);
      color: #FFFFFF;
      font-weight: 600;
      font-size: 0.9rem;
      padding: 0.6rem 1.25rem;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    }
    .btn-download-nav:hover {
      background-color: var(--primary-dark);
      transform: translateY(-1px);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--dark-slate);
    }

    /* Section 基础骨架 */
    .section-wrap {
      padding: 5.5rem 0;
      position: relative;
    }
    .bg-white-panel {
      background-color: var(--bg-white);
    }
    .bg-slate-panel {
      background-color: var(--dark-slate);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 3.5rem;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-subtitle-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--primary-dark);
      background-color: #ECFDF5;
      padding: 0.35rem 0.85rem;
      border-radius: 999px;
      margin-bottom: 0.75rem;
      border: 1px solid #A7F3D0;
    }
    .bg-slate-panel .section-subtitle-tag {
      background-color: rgba(16, 185, 129, 0.15);
      border-color: rgba(16, 185, 129, 0.3);
      color: #34D399;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: -0.02em;
      margin-bottom: 1rem;
    }
    .bg-slate-panel .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      line-height: 1.75;
    }
    .bg-slate-panel .section-desc {
      color: #94A3B8;
    }

    /* 板块一：首屏 Hero 自测选型问卷与结果预览 */
    .hero-section {
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
      padding: 4.5rem 0 5rem;
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 900;
      letter-spacing: -0.03em;
      color: var(--dark-slate);
      margin-bottom: 1.25rem;
    }
    .hero-content h1 span {
      color: var(--primary);
    }
    .hero-intro-lead {
      font-size: 1.05rem;
      line-height: 1.8;
      color: #475569;
      margin-bottom: 2rem;
    }
    .hero-metrics-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      margin-bottom: 2.25rem;
    }
    .metric-pill {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 0.5rem 1rem;
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      box-shadow: var(--shadow-sm);
    }
    .metric-pill .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--primary);
    }
    .hero-cta-group {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .btn-hero-primary {
      background: var(--accent);
      color: #FFFFFF;
      font-weight: 700;
      font-size: 1rem;
      padding: 0.9rem 1.85rem;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 20px -3px rgba(249, 115, 22, 0.35);
      border: none;
      cursor: pointer;
    }
    .btn-hero-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
    }
    .btn-hero-outline {
      background: #FFFFFF;
      color: var(--dark-slate);
      font-weight: 700;
      font-size: 1rem;
      padding: 0.9rem 1.85rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-outline:hover {
      background: #F8FAFC;
      border-color: #CBD5E1;
    }

    /* 问卷评估卡 */
    .hero-eval-card {
      background: #FFFFFF;
      border: 1px solid #E2E8F0;
      border-radius: var(--radius-xl);
      padding: 2.25rem;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .eval-badge {
      display: inline-block;
      background: #FEF3C7;
      color: #B45309;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 0.25rem 0.65rem;
      border-radius: 4px;
      margin-bottom: 0.75rem;
    }
    .eval-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 0.5rem;
    }
    .eval-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.5rem;
    }
    .eval-form-group {
      margin-bottom: 1.25rem;
    }
    .eval-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 700;
      color: #334155;
      margin-bottom: 0.5rem;
    }
    .eval-grid-options {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.6rem;
    }
    .eval-option-btn {
      padding: 0.6rem 0.75rem;
      font-size: 0.8125rem;
      font-weight: 600;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #F8FAFC;
      cursor: pointer;
      text-align: center;
      transition: all 0.2s;
    }
    .eval-option-btn.selected {
      background: #ECFDF5;
      border-color: var(--primary);
      color: var(--primary-dark);
    }
    .eval-result-preview {
      background: #F1F5F9;
      border-radius: var(--radius-md);
      padding: 1rem;
      margin-top: 1.25rem;
      border-left: 4px solid var(--primary);
    }
    .eval-result-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.8125rem;
      font-weight: 600;
      margin-bottom: 0.25rem;
    }
    .eval-result-lead {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块二：痛点共鸣 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .pain-card {
      background: var(--bg-white);
      border: 1px solid #FEE2E2;
      border-radius: var(--radius-lg);
      padding: 2.25rem 1.75rem;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s;
    }
    .pain-card:hover {
      transform: translateY(-4px);
    }
    .pain-tag {
      color: #DC2626;
      background: #FEF2F2;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.6rem;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 1rem;
    }
    .pain-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--dark-slate);
    }
    .pain-text {
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.7;
    }

    /* 板块三：核心解决方案 */
    .solution-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .solution-img-wrapper {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .solution-img-wrapper img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .solution-tag-stat {
      position: absolute;
      bottom: 1.5rem;
      left: 1.5rem;
      background: rgba(15, 23, 42, 0.9);
      color: #FFFFFF;
      padding: 1rem 1.5rem;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
      border: 1px solid var(--slate-border);
    }
    .solution-points-list {
      list-style: none;
      margin-top: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .solution-point-item {
      display: flex;
      gap: 1rem;
    }
    .point-icon {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: #ECFDF5;
      color: var(--primary-dark);
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 0.2rem;
    }
    .point-content h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 0.25rem;
      color: var(--dark-slate);
    }
    .point-content p {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.6;
    }

    /* 板块四：核心优势矩阵（6卡） */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2rem;
      transition: all 0.25s;
    }
    .matrix-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .matrix-card-num {
      font-size: 1.75rem;
      font-weight: 900;
      color: #CBD5E1;
      margin-bottom: 0.75rem;
      line-height: 1;
    }
    .matrix-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      color: var(--dark-slate);
    }
    .matrix-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块五：课件与数字化教案（3卡） */
    .course-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .course-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s;
    }
    .course-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .course-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .course-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s;
    }
    .course-card:hover .course-thumb img {
      transform: scale(1.05);
    }
    .course-body {
      padding: 1.75rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .course-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 0.75rem;
    }
    .course-body h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 0.5rem;
    }
    .course-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .course-btn {
      align-self: flex-start;
      color: var(--dark-slate);
      font-weight: 700;
      font-size: 0.875rem;
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
      border-bottom: 2px solid var(--primary);
      padding-bottom: 2px;
    }
    .course-btn:hover {
      color: var(--primary-dark);
    }

    /* 板块六：深色数字化战术板解析 */
    .tactics-box {
      border: 1px solid var(--slate-border);
      border-radius: var(--radius-xl);
      background: #131E35;
      padding: 3rem;
      position: relative;
      overflow: hidden;
    }
    .tactics-board-grid {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .pitch-diagram {
      background: #0B3B2B;
      border: 2px solid #34D399;
      border-radius: var(--radius-md);
      padding: 1.5rem;
      position: relative;
      min-height: 280px;
      display: flex;
      flex-direction: column;
      justify-content: space-around;
      box-shadow: inset 0 0 40px rgba(0,0,0,0.5);
    }
    .pitch-line-center {
      position: absolute;
      top: 50%;
      left: 0;
      width: 100%;
      height: 1px;
      background: rgba(255,255,255,0.25);
    }
    .pitch-circle {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 90px;
      height: 90px;
      border: 1px solid rgba(255,255,255,0.25);
      border-radius: 50%;
    }
    .pitch-node-row {
      display: flex;
      justify-content: space-around;
      position: relative;
      z-index: 2;
    }
    .node-player {
      width: 38px;
      height: 38px;
      background: var(--accent);
      border: 2px solid #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 800;
      color: #FFFFFF;
      box-shadow: 0 4px 10px rgba(0,0,0,0.4);
    }
    .node-player.pivot {
      background: var(--primary);
    }
    .tactics-info h3 {
      font-size: 1.6rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 1rem;
    }
    .tactics-info p {
      color: #94A3B8;
      font-size: 0.95rem;
      line-height: 1.75;
      margin-bottom: 1.5rem;
    }
    .tactics-tags-flow {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .t-tag {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #E2E8F0;
      font-size: 0.8125rem;
      padding: 0.35rem 0.8rem;
      border-radius: var(--radius-sm);
    }

    /* 板块七：四步训练流程（步骤条） */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2rem 1.5rem;
      position: relative;
    }
    .step-number {
      font-size: 2.25rem;
      font-weight: 900;
      color: #E2E8F0;
      line-height: 1;
      margin-bottom: 1rem;
    }
    .step-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 0.5rem;
    }
    .step-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块八：数据指标条 */
    .stats-bar-wrapper {
      background: #0F172A;
      border-radius: var(--radius-xl);
      padding: 3.5rem 2rem;
      color: #FFFFFF;
      box-shadow: var(--shadow-lg);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .stat-item h3 {
      font-size: 2.75rem;
      font-weight: 900;
      color: var(--primary;
      letter-spacing: -0.03em;
      margin-bottom: 0.35rem;
    }
    .stat-item p {
      font-size: 0.95rem;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 板块九：实战成长案例（左右大卡） */
    .case-story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.25rem;
    }
    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 2.5rem;
      box-shadow: var(--shadow-sm);
    }
    .case-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--accent);
      background: #FFF7ED;
      padding: 0.25rem 0.65rem;
      border-radius: 4px;
      margin-bottom: 1rem;
    }
    .case-card h3 {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 0.85rem;
      color: var(--dark-slate);
    }
    .case-desc {
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.75;
      margin-bottom: 1.75rem;
    }
    .case-metrics-compare {
      display: grid;
      grid-template-columns: 1fr 1fr;
      background: #F8FAFC;
      border-radius: var(--radius-md);
      padding: 1.25rem;
      gap: 1rem;
      border: 1px solid #EDF2F7;
    }
    .compare-box span {
      display: block;
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 0.25rem;
    }
    .compare-box strong {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-dark);
    }

    /* 板块十：学员与教练评价（3卡） */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1rem;
      letter-spacing: 2px;
      margin-bottom: 1rem;
    }
    .review-quote {
      font-size: 0.925rem;
      color: #334155;
      line-height: 1.75;
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      border-top: 1px solid #F1F5F9;
      padding-top: 1rem;
    }
    .author-avatar-initial {
      width: 42px;
      height: 42px;
      background: #E2E8F0;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--dark-slate);
      font-size: 0.95rem;
    }
    .author-info h4 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--dark-slate);
    }
    .author-info p {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 板块十一：适用场景细分（4卡） */
    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2rem 1.5rem;
      text-align: left;
      transition: all 0.25s;
    }
    .scenario-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .scenario-icon {
      width: 48px;
      height: 48px;
      background: #ECFDF5;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      font-size: 1.25rem;
      margin-bottom: 1.25rem;
    }
    .scenario-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      color: var(--dark-slate);
    }
    .scenario-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块十二：资讯与技巧要领摘要（3卡） */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .article-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .article-img-wrap {
      height: 190px;
      overflow: hidden;
    }
    .article-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s;
    }
    .article-card:hover .article-img-wrap img {
      transform: scale(1.05);
    }
    .article-content {
      padding: 1.75rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .article-date {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
      font-weight: 600;
    }
    .article-content h3 {
      font-size: 1.15rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 0.65rem;
      color: var(--dark-slate);
    }
    .article-content p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }
    .article-action {
      margin-top: 1rem;
      color: var(--primary-dark);
      font-weight: 700;
      font-size: 0.85rem;
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    /* 板块十三：高频常见解答 FAQ */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
      transition: border-color 0.2s;
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-question {
      width: 100%;
      padding: 1.35rem 1.5rem;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-slate);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      line-height: 1;
      transition: transform 0.25s;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background-color: #FAFAFA;
      border-top: 1px solid transparent;
    }
    .faq-item.active .faq-answer {
      max-height: 240px;
      border-top-color: #F1F5F9;
    }
    .faq-inner {
      padding: 1.25rem 1.5rem;
      font-size: 0.925rem;
      color: #475569;
      line-height: 1.75;
    }

    /* 底部收口与下载转化条 */
    .bottom-cta-banner {
      background: linear-gradient(135deg, #0F172A 0%, #064E3B 100%);
      color: #FFFFFF;
      padding: 5rem 0;
      text-align: center;
      position: relative;
    }
    .bottom-cta-title {
      font-size: 2.25rem;
      font-weight: 900;
      letter-spacing: -0.02em;
      margin-bottom: 1rem;
    }
    .bottom-cta-sub {
      font-size: 1.05rem;
      color: #CBD5E1;
      max-width: 650px;
      margin: 0 auto 2.5rem;
      line-height: 1.75;
    }
    .bottom-btn-group {
      display: flex;
      justify-content: center;
      gap: 1.25rem;
      flex-wrap: wrap;
    }
    .btn-store-dl {
      background: #FFFFFF;
      color: var(--dark-slate);
      font-weight: 700;
      font-size: 0.95rem;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-md);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    }
    .btn-store-dl:hover {
      background: #F1F5F9;
      transform: translateY(-2px);
    }
    .btn-store-dl.android {
      background: var(--primary);
      color: #FFFFFF;
    }
    .btn-store-dl.android:hover {
      background: var(--primary-dark);
    }

    /* 全局统一页脚 Footer */
    .site-footer {
      background-color: #0B1120;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      font-size: 0.875rem;
      border-top: 1px solid #1E293B;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h4 {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-brand p {
      line-height: 1.75;
      margin-bottom: 1.25rem;
      color: #64748B;
    }
    .footer-col h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
      letter-spacing: 0.05em;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-col a:hover {
      color: var(--primary);
    }
    .contact-spec-item {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
      margin-bottom: 0.85rem;
    }
    .contact-spec-item span {
      font-size: 0.75rem;
      color: #64748B;
    }
    .contact-spec-item strong {
      color: #E2E8F0;
      font-size: 0.95rem;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1E293B;
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-legal-links {
      display: flex;
      gap: 1.5rem;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .solution-split {
        grid-template-columns: 1fr;
      }
      .tactics-board-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid, .course-grid, .steps-container, .review-grid, .scenarios-grid, .article-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        display: none;
      }
      .nav-menu.show {
        display: flex;
      }
      .header-action {
        display: none;
      }
      .hero-content h1 {
        font-size: 2.15rem;
      }
      .section-wrap {
        padding: 3.5rem 0;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .pain-grid, .matrix-grid, .course-grid, .steps-container, .case-story-grid, .review-grid, .scenarios-grid, .article-grid, .stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-bar {
        flex-direction: column;
        text-align: center;
      }
    }