/* roulang page: index */
:root {
      --bg-dark: #080B10;
      --bg-surface: #0F141C;
      --bg-card: rgba(18, 24, 38, 0.78);
      --bg-card-hover: rgba(26, 36, 56, 0.9);
      --primary: #0F141C;
      --accent-green: #00FF88;
      --accent-purple: #7928CA;
      --accent-cyan: #38BDF8;
      --text-main: #FFFFFF;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-glow: rgba(0, 255, 136, 0.4);
      --font-base: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      --font-mono: "JetBrains Mono", "Fira Code", monospace;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --container-max: 1280px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: var(--font-base);
      line-height: 1.6;
    }

    body {
      background-image: 
        radial-gradient(circle at 50% 0%, rgba(121, 40, 202, 0.15) 0%, transparent 60%),
        radial-gradient(circle at 10% 40%, rgba(0, 255, 136, 0.04) 0%, transparent 40%),
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
      background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
      overflow-x: hidden;
    }

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

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

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

    /* 顶部信息状态栏与主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(8, 11, 16, 0.92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
    }

    .top-status-bar {
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      font-size: 12px;
      color: var(--text-muted);
      padding: 6px 0;
      font-family: var(--font-mono);
    }
    .top-status-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-green);
      box-shadow: 0 0 10px var(--accent-green);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    .main-nav-bar {
      padding: 14px 0;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      font-size: 19px;
      font-weight: 800;
      letter-spacing: -0.02em;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-main);
    }
    .brand-icon {
      width: 28px;
      height: 28px;
      border: 1.5px solid var(--accent-green);
      border-radius: var(--radius-sm);
      display: grid;
      place-items: center;
      box-shadow: 0 0 12px rgba(0, 255, 136, 0.35);
      position: relative;
    }
    .brand-icon::after {
      content: '';
      width: 10px;
      height: 10px;
      background: var(--accent-green);
      border-radius: 2px;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .nav-links a:hover {
      color: var(--accent-green);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: none;
    }
    .btn-primary {
      background: var(--accent-green);
      color: #05080c;
      box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
    }
    .btn-primary:hover {
      background: #33ff9e;
      transform: translateY(-2px);
      box-shadow: 0 0 28px rgba(0, 255, 136, 0.5);
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      border: 1px solid var(--border-subtle);
    }
    .btn-outline:hover {
      border-color: var(--accent-cyan);
      background: rgba(56, 189, 248, 0.08);
      color: var(--accent-cyan);
    }

    /* 板块排版公用 */
    section {
      padding: 90px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      position: relative;
    }
    .section-header {
      margin-bottom: 48px;
      max-width: 760px;
    }
    .section-eyebrow {
      display: inline-block;
      font-family: var(--font-mono);
      font-size: 13px;
      color: var(--accent-green);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 10px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #fff;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. 首屏指标看板大屏 #hero */
    #hero {
      padding: 100px 0 80px;
      background: radial-gradient(circle at 75% 30%, rgba(121, 40, 202, 0.22) 0%, transparent 60%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 44px;
      line-height: 1.22;
      font-weight: 800;
      letter-spacing: -0.03em;
      margin-bottom: 22px;
      background: linear-gradient(135deg, #FFFFFF 30%, #94A3B8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 34px;
    }
    .hero-cta-group {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-metrics-pill {
      display: flex;
      gap: 24px;
      padding-top: 24px;
      border-top: 1px solid var(--border-subtle);
    }
    .pill-item span {
      display: block;
      font-family: var(--font-mono);
      font-size: 22px;
      font-weight: 700;
      color: var(--accent-cyan);
    }
    .pill-item label {
      font-size: 12px;
      color: var(--text-dim);
    }

    .hero-simulator {
      position: relative;
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
    }
    .sim-header {
      background: rgba(15, 20, 28, 0.85);
      padding: 12px 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-subtle);
      font-family: var(--font-mono);
      font-size: 12px;
    }
    .sim-stage {
      position: relative;
      height: 380px;
      overflow: hidden;
    }
    .sim-stage img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: contrast(1.15) brightness(0.9);
    }
    .sim-overlay-hud {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(8, 11, 16, 0.95) 100%);
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      pointer-events: none;
    }
    .hud-chip {
      align-self: flex-start;
      background: rgba(0, 255, 136, 0.12);
      border: 1px solid var(--accent-green);
      color: var(--accent-green);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-size: 11px;
      font-family: var(--font-mono);
    }
    .hud-telemetry {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }
    .hud-data-box {
      background: rgba(10, 15, 24, 0.88);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 10px;
      border-radius: var(--radius-sm);
      backdrop-filter: blur(8px);
    }
    .hud-data-box strong {
      font-family: var(--font-mono);
      color: #fff;
      font-size: 15px;
      display: block;
    }
    .hud-data-box small {
      font-size: 11px;
      color: var(--text-dim);
    }

    /* 2. 品牌与产品引擎架构矩阵 #engine-intro */
    .engine-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .engine-diagram-box {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .pipeline-step {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 20px;
      position: relative;
    }
    .step-num {
      width: 32px;
      height: 32px;
      border-radius: var(--radius-sm);
      background: rgba(121, 40, 202, 0.25);
      border: 1px solid var(--accent-purple);
      color: #fff;
      display: grid;
      place-items: center;
      font-family: var(--font-mono);
      font-weight: 700;
      font-size: 13px;
      flex-shrink: 0;
    }
    .step-info h4 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 4px;
    }
    .step-info p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .engine-spec-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 28px;
    }
    .spec-card {
      background: rgba(255, 255, 255, 0.02);
      border-left: 2px solid var(--accent-cyan);
      padding: 12px 16px;
    }
    .spec-card code {
      font-family: var(--font-mono);
      color: var(--accent-cyan);
      font-size: 13px;
    }

    /* 3. 沉浸式核心技术优势网格 #advantages */
    .grid-6-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      position: relative;
    }
    .adv-card:hover {
      border-color: var(--accent-green);
      transform: translateY(-4px);
      box-shadow: 0 10px 30px rgba(0, 255, 136, 0.12);
    }
    .adv-icon {
      font-size: 20px;
      color: var(--accent-green);
      margin-bottom: 16px;
      font-family: var(--font-mono);
    }
    .adv-card h3 {
      font-size: 18px;
      margin-bottom: 10px;
      color: #fff;
    }
    .adv-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 4. 热门数据可视化套件 #products */
    .suite-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .suite-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
      overflow: hidden;
      transition: var(--transition);
    }
    .suite-card:hover {
      border-color: rgba(56, 189, 248, 0.4);
      transform: translateY(-5px);
    }
    .suite-visual {
      height: 190px;
      overflow: hidden;
      position: relative;
    }
    .suite-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .suite-card:hover .suite-visual img {
      transform: scale(1.05);
    }
    .suite-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .suite-tag {
      font-size: 11px;
      font-family: var(--font-mono);
      color: var(--accent-cyan);
      background: rgba(56, 189, 248, 0.1);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 12px;
      align-self: flex-start;
    }
    .suite-body h3 {
      font-size: 19px;
      margin-bottom: 10px;
      color: #fff;
    }
    .suite-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .suite-features {
      list-style: none;
      border-top: 1px solid var(--border-subtle);
      padding-top: 14px;
      margin-bottom: 20px;
    }
    .suite-features li {
      font-size: 13px;
      color: var(--text-dim);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .suite-features li::before {
      content: '▸';
      color: var(--accent-green);
    }

    /* 5. 深色实战案例与全息渲染理念区 #dark-cases */
    #dark-cases {
      background: #06090e url('/assets/images/cb16d6340c0b043b.png') center/cover no-repeat;
      position: relative;
    }
    #dark-cases::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(6, 9, 14, 0.88);
    }
    .case-wrapper {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .case-media {
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
    }
    .case-content h3 {
      font-size: 28px;
      color: #fff;
      margin-bottom: 18px;
    }
    .case-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .case-stat-badge-row {
      display: flex;
      gap: 20px;
      margin-bottom: 28px;
    }
    .case-badge {
      background: rgba(15, 20, 28, 0.7);
      border: 1px solid var(--border-subtle);
      padding: 12px 18px;
      border-radius: var(--radius-sm);
    }
    .case-badge span {
      display: block;
      font-size: 20px;
      font-family: var(--font-mono);
      font-weight: 700;
      color: var(--accent-green);
    }
    .case-badge label {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 6. 游戏研发与发行用户故事展区 #stories */
    .story-cards-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .story-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 32px;
      display: flex;
      flex-direction: column;
    }
    .story-role {
      font-size: 12px;
      font-family: var(--font-mono);
      color: var(--accent-purple);
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .story-card h3 {
      font-size: 20px;
      color: #fff;
      margin-bottom: 14px;
    }
    .story-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .story-foot {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid var(--border-subtle);
      padding-top: 16px;
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 7. 硬核技术结果对比看板 #benchmark */
    .benchmark-table-box {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow-x: auto;
    }
    .bm-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .bm-table th, .bm-table td {
      padding: 18px 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .bm-table th {
      background: rgba(15, 20, 28, 0.95);
      font-family: var(--font-mono);
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }
    .bm-table td.highlight {
      background: rgba(0, 255, 136, 0.04);
      color: var(--accent-green);
      font-family: var(--font-mono);
      font-weight: 600;
    }
    .bm-table td.dimmed {
      color: var(--text-dim);
    }

    /* 8. 关键业务与技术数据统计条 #stats */
    #stats {
      padding: 60px 0;
      background: linear-gradient(90deg, rgba(15, 20, 28, 0.9) 0%, rgba(121, 40, 202, 0.15) 50%, rgba(15, 20, 28, 0.9) 100%);
    }
    .stats-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .stat-strip-item strong {
      font-family: var(--font-mono);
      font-size: 44px;
      font-weight: 800;
      color: #fff;
      display: block;
      line-height: 1.1;
      margin-bottom: 8px;
      background: linear-gradient(180deg, #fff 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .stat-strip-item p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 9. 演进里程碑与引擎版本轨迹 #milestones */
    .timeline-container {
      position: relative;
      margin-left: 20px;
      border-left: 2px solid rgba(255, 255, 255, 0.1);
      padding-left: 32px;
      display: flex;
      flex-direction: column;
      gap: 36px;
    }
    .timeline-node {
      position: relative;
    }
    .node-marker {
      position: absolute;
      left: -40px;
      top: 4px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--bg-dark);
      border: 2px solid var(--accent-cyan);
      box-shadow: 0 0 10px var(--accent-cyan);
    }
    .timeline-node.active .node-marker {
      border-color: var(--accent-green);
      background: var(--accent-green);
      box-shadow: 0 0 12px var(--accent-green);
    }
    .node-version {
      font-family: var(--font-mono);
      font-size: 13px;
      color: var(--accent-green);
      margin-bottom: 6px;
    }
    .timeline-node h4 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 8px;
    }
    .timeline-node p {
      font-size: 14px;
      color: var(--text-muted);
      max-width: 800px;
      line-height: 1.6;
    }

    /* 10. 行业客户与研发工作室评价区 #testimonials */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-subtle);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      display: grid;
      place-items: center;
      font-weight: 700;
      color: var(--accent-cyan);
      font-family: var(--font-mono);
    }
    .author-meta strong {
      display: block;
      font-size: 14px;
      color: #fff;
    }
    .author-meta small {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 11. 深度技术资讯与研发洞察精选 #insights */
    .insight-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .insight-card:hover {
      border-color: rgba(255, 255, 255, 0.2);
      transform: translateY(-4px);
    }
    .insight-thumb {
      height: 170px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-content {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-date {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 8px;
    }
    .insight-content h4 {
      font-size: 17px;
      color: #fff;
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .insight-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .insight-link {
      font-size: 13px;
      color: var(--accent-green);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-weight: 600;
    }

    /* 12. 常见技术问题与平台保障 FAQ #faq */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      overflow: hidden;
    }
    .faq-item summary {
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      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-family: var(--font-mono);
      font-size: 18px;
      color: var(--accent-cyan);
      transition: var(--transition);
    }
    .faq-item[open] summary::after {
      transform: rotate(45deg);
      color: var(--accent-green);
    }
    .faq-item p {
      padding: 0 22px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 13. 高转化意向沟通与演示申请表单 #contact */
    #contact {
      background: radial-gradient(circle at 50% 100%, rgba(121, 40, 202, 0.25) 0%, transparent 70%);
      padding-bottom: 110px;
    }
    .contact-card-box {
      background: var(--bg-surface);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 44px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
    }
    .contact-info h3 {
      font-size: 26px;
      margin-bottom: 16px;
      color: #fff;
    }
    .contact-info p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 30px;
    }
    .sla-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .sla-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: var(--text-main);
    }
    .sla-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(0, 255, 136, 0.1);
      color: var(--accent-green);
      display: grid;
      place-items: center;
      font-size: 12px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      background: rgba(8, 11, 16, 0.75);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      font-size: 14px;
      color: #fff;
      font-family: inherit;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--accent-green);
      box-shadow: 0 0 12px rgba(0, 255, 136, 0.2);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    /* 页脚 */
    .site-footer {
      background: #05070a;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 60px 0 30px;
      font-size: 13px;
      color: var(--text-dim);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      font-size: 17px;
      color: #fff;
      margin-bottom: 14px;
    }
    .footer-col h5 {
      font-size: 14px;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a:hover {
      color: var(--accent-green);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 移动端汉堡切换与响应式断点 */
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      color: #fff;
      font-size: 22px;
      cursor: pointer;
    }

    @media (max-width: 1024px) {
      .hero-grid, .engine-layout, .case-wrapper, .contact-card-box {
        grid-template-columns: 1fr;
      }
      .grid-6-cards, .suite-grid, .testi-grid, .insight-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-strip {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-status-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .grid-6-cards, .suite-grid, .testi-grid, .insight-grid, .story-cards-row, .faq-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .hero-metrics-pill {
        flex-direction: column;
        gap: 12px;
      }
    }