/* roulang page: index */
:root {
      --primary: #E65100;
      --primary-hover: #FF6D00;
      --primary-light: #FFF3E0;
      --secondary: #00897B;
      --secondary-dark: #1A3038;
      --dark-surface: #0F172A;
      --bg-body: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-focus: #FF9800;
      --warning: #F59E0B;
      --success: #10B981;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-pill: 9999px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 12px 28px -4px rgba(230, 81, 0, 0.14);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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-body);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    ul, ol {
      list-style: none;
    }

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部通知条 */
    .top-bar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.8125rem;
      color: var(--text-muted);
      height: 36px;
      display: flex;
      align-items: center;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .top-bar-tags {
      display: flex;
      gap: 16px;
    }
    .top-bar-badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: var(--secondary);
      font-weight: 500;
    }

    /* 吸顶导航条 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(10px);
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-container {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--primary-hover));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 1.2rem;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--primary);
      border-radius: var(--radius-pill);
    }
    .header-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 按钮样式规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.9375rem;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(230, 81, 0, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(230, 81, 0, 0.35);
    }
    .btn-secondary {
      background-color: #ffffff;
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .btn-outline-white {
      background: transparent;
      color: #ffffff;
      border-color: rgba(255, 255, 255, 0.4);
    }
    .btn-outline-white:hover {
      border-color: #ffffff;
      background: rgba(255, 255, 255, 0.1);
    }

    /* 汉堡按钮 */
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 区块通用结构 */
    .section {
      padding: clamp(64px, 8vw, 96px) 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
    }
    .section-dark {
      background-color: var(--dark-surface);
      color: #FFFFFF;
    }
    .section-header {
      margin-bottom: 48px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 0.8125rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-dark .section-tag {
      background-color: rgba(255, 109, 0, 0.15);
      color: #FFA726;
    }
    .section-title {
      font-size: clamp(1.75rem, 3.5vw, 2.35rem);
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-dark .section-desc {
      color: var(--text-light);
    }

    /* 板块1：Hero Banner */
    .hero-section {
      padding: 72px 0 88px;
      background: radial-gradient(circle at top right, rgba(255, 109, 0, 0.08), transparent 45%),
                  radial-gradient(circle at bottom left, rgba(0, 137, 123, 0.06), transparent 40%),
                  var(--bg-body);
      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(2.2rem, 4.2vw, 3.25rem);
      line-height: 1.2;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-highlight {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }
    .hero-lead {
      font-size: 1.125rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 32px;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      padding-top: 24px;
      border-top: 1px dashed var(--border-color);
    }
    .hero-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: var(--text-main);
      font-weight: 600;
    }
    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--secondary);
    }
    .hero-visual-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 18px;
      box-shadow: 0 16px 40px -12px rgba(15, 23, 42, 0.12);
      border: 1px solid var(--border-color);
      overflow: hidden;
      position: relative;
    }
    .hero-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      position: relative;
      height: 380px;
    }
    .hero-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .hero-floating-stat {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.8);
      display: flex;
      justify-content: space-around;
      box-shadow: var(--shadow-md);
    }
    .stat-mini-item {
      text-align: center;
    }
    .stat-mini-val {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      display: block;
      line-height: 1.2;
    }
    .stat-mini-lbl {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 板块2：国家标准对接与架构规范 */
    .standard-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .standard-image-panel {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      height: 400px;
    }
    .standard-image-panel img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .standard-spec-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .spec-item {
      background: #FFFFFF;
      padding: 20px;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .spec-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .spec-text {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块3：六大核心功能优势 */
    .strengths-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .strength-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      border: 1px solid var(--border-color);
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .strength-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(230, 81, 0, 0.4);
    }
    .strength-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.25rem;
      margin-bottom: 20px;
    }
    .strength-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .strength-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    /* 板块4：产品矩阵对比 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .matrix-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }
    .matrix-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 8px 30px rgba(230, 81, 0, 0.12);
      transform: scale(1.02);
      z-index: 2;
    }
    .matrix-featured-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: #fff;
      padding: 4px 16px;
      font-size: 0.8rem;
      font-weight: 700;
      border-radius: var(--radius-pill);
    }
    .matrix-edition {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .matrix-target {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-color);
    }
    .matrix-features {
      margin-bottom: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .matrix-feature-item {
      font-size: 0.925rem;
      color: var(--text-main);
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .matrix-feature-item::before {
      content: "✔";
      color: var(--secondary);
      font-weight: 800;
      font-size: 0.85rem;
    }

    /* 板块5：深色高反差 智慧操场大屏沉浸区 */
    .immersive-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .immersive-screen-mock {
      background: #1E293B;
      border-radius: var(--radius-lg);
      padding: 16px;
      border: 1px solid #334155;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    }
    .screen-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 360px;
    }
    .screen-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .closed-loop-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .loop-item {
      display: flex;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .loop-key {
      font-weight: 800;
      color: #FFA726;
      font-size: 1.15rem;
      line-height: 1.3;
    }
    .loop-val {
      font-size: 0.925rem;
      color: #CBD5E1;
      line-height: 1.5;
    }

    /* 板块6：场景演示与双端角色工作流 */
    .workflow-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-bottom: 56px;
    }
    .workflow-row.reversed {
      direction: rtl;
    }
    .workflow-row.reversed .workflow-content {
      direction: ltr;
    }
    .workflow-media {
      direction: ltr;
      border-radius: var(--radius-lg);
      overflow: hidden;
      height: 340px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }
    .workflow-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .workflow-title {
      font-size: 1.45rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .workflow-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .workflow-points {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .point-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--text-main);
    }

    /* 板块7：用户故事与纪实落地 */
    .story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .story-img-box {
      height: 220px;
      overflow: hidden;
    }
    .story-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 28px;
    }
    .story-school {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .story-feedback {
      font-style: italic;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .story-metrics-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: #ECFDF5;
      color: #065F46;
      border-radius: var(--radius-pill);
      font-size: 0.875rem;
      font-weight: 700;
    }

    /* 板块8：关键数据成效条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #FFF8E1, #FFE0B2);
      border-top: 1px solid #FFE082;
      border-bottom: 1px solid #FFE082;
      padding: 56px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-number {
      font-size: clamp(2rem, 3.8vw, 3rem);
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-label {
      font-size: 0.95rem;
      color: var(--secondary-dark);
      font-weight: 700;
    }

    /* 板块9：真实评价与家校回馈 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .review-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }
    .review-stars {
      color: var(--warning);
      font-size: 1.1rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .review-quote {
      font-size: 0.9375rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-body);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      border: 1px solid var(--border-color);
    }
    .author-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .author-title {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 板块10：政策证据链与资讯 */
    .evidence-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 32px;
    }
    .evidence-main-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .evidence-main-thumb {
      height: 240px;
      overflow: hidden;
    }
    .evidence-main-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .evidence-main-body {
      padding: 28px;
    }
    .evidence-date {
      font-size: 0.8125rem;
      color: var(--secondary);
      font-weight: 700;
      margin-bottom: 8px;
      display: inline-block;
    }
    .evidence-title {
      font-size: 1.3rem;
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .evidence-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .evidence-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .evidence-sub-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 20px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .evidence-sub-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .evidence-sub-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块11：手风琴 FAQ */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      color: var(--text-main);
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: "+";
      font-size: 1.4rem;
      color: var(--primary);
      transition: transform 0.25s ease;
      font-weight: 400;
    }
    details[open] .faq-summary::after {
      content: "−";
      transform: rotate(180deg);
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed #F1F5F9;
      padding-top: 16px;
    }

    /* 板块12：落地服务保障与规范流程 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-badge {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      font-size: 1.15rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }
    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块13：收口转化表单 */
    .cta-card {
      background: linear-gradient(135deg, #1A3038, #0F172A);
      border-radius: var(--radius-lg);
      padding: clamp(36px, 6vw, 64px);
      color: #FFFFFF;
      box-shadow: 0 20px 40px rgba(15, 23, 42, 0.2);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-heading {
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
    }
    .cta-desc {
      font-size: 1rem;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-features {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .cta-feature-point {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9375rem;
      color: #94A3B8;
    }
    .cta-form {
      background: #FFFFFF;
      padding: 32px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-input {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9375rem;
      color: var(--text-main);
      background-color: #F8FAFC;
      transition: border-color 0.2s;
    }
    .form-input:focus {
      border-color: var(--primary);
      background-color: #FFFFFF;
    }
    .form-submit-btn {
      width: 100%;
      padding: 12px;
      background: var(--primary);
      color: #fff;
      border: none;
      border-radius: var(--radius-pill);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: background-color 0.2s;
    }
    .form-submit-btn:hover {
      background: var(--primary-hover);
    }
    .form-notice {
      font-size: 0.75rem;
      color: var(--text-muted);
      text-align: center;
      margin-top: 10px;
    }

    /* 底部固定转化条 */
    .floating-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 999;
      background: rgba(15, 23, 42, 0.96);
      backdrop-filter: blur(12px);
      border-top: 1px solid #334155;
      padding: 12px 24px;
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    }
    .floating-bar-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .floating-text-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .floating-tag {
      background: var(--primary);
      color: #fff;
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      font-weight: 700;
    }
    .floating-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: #F8FAFC;
    }
    .floating-hotline {
      font-size: 0.875rem;
      color: #94A3B8;
    }

    /* 页脚设计 */
    .site-footer {
      background-color: var(--dark-surface);
      color: #94A3B8;
      padding: 64px 0 32px;
      border-top: 1px solid #1E293B;
      padding-bottom: 96px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-about {
      font-size: 0.875rem;
      line-height: 1.8;
      color: #94A3B8;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.875rem;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-cert-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.875rem;
      color: #94A3B8;
    }
    .footer-contact-item {
      font-size: 0.875rem;
      margin-bottom: 10px;
      display: flex;
      gap: 8px;
      color: #CBD5E1;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
      color: #64748B;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 108px;
      left: 0;
      right: 0;
      background: #FFFFFF;
      padding: 24px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
      border-bottom: 1px solid var(--border-color);
      flex-direction: column;
      gap: 16px;
      z-index: 998;
    }
    .mobile-drawer.active {
      display: flex;
    }
    .mobile-drawer .nav-link {
      font-size: 1.05rem;
      padding: 8px 0;
      border-bottom: 1px solid #F1F5F9;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid, .standard-grid, .immersive-wrap, .evidence-layout, .cta-grid {
        grid-template-columns: 1fr;
      }
      .strengths-grid, .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 32px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-img-wrap, .standard-image-panel, .screen-img, .workflow-media {
        height: 300px;
      }
    }

    @media (max-width: 767px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .top-bar {
        display: none;
      }
      .main-nav, .header-action .btn {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .strengths-grid, .matrix-grid, .story-grid, .reviews-grid, .steps-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .workflow-row, .workflow-row.reversed {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .floating-text-wrap {
        display: none;
      }
      .floating-bar-inner {
        justify-content: center;
        width: 100%;
      }
      .floating-bar-inner .btn {
        width: 100%;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .cta-form {
        padding: 20px;
      }
      .site-footer {
        padding-bottom: 110px;
      }
    }