/* roulang page: index */
:root {
      --bg-body: #07090e;
      --bg-surface: #0d121f;
      --bg-card: #121829;
      --bg-card-hover: #18223a;
      --border-subtle: #1e293b;
      --border-bright: #334155;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --accent-cyan: #0ea5e9;
      --accent-cyan-glow: rgba(14, 165, 233, 0.25);
      --accent-orange: #f97316;
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
      --container-max: 1240px;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-body);
      color: var(--text-main);
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    body {
      overflow-x: hidden;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

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

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

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

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

    /* 顶部双行导航系统 */
    .top-meta-bar {
      height: 36px;
      background-color: #05070a;
      border-bottom: 1px solid #131b2e;
      font-size: 0.8125rem;
      color: var(--text-dim);
      display: flex;
      align-items: center;
    }

    .meta-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .meta-status {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .status-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-color: #10b981;
      box-shadow: 0 0 8px #10b981;
    }

    .meta-contacts {
      display: flex;
      gap: 20px;
    }

    .meta-contacts a:hover {
      color: var(--accent-cyan);
    }

    header.main-header {
      position: sticky;
      top: 0;
      z-index: 90;
      background-color: rgba(7, 9, 14, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }

    .nav-bar {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      letter-spacing: -0.02em;
    }

    .logo-badge {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      background-color: var(--accent-cyan);
      color: #030712;
      padding: 2px 6px;
      border-radius: var(--radius-sm);
      font-weight: 800;
    }

    .desktop-nav {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .desktop-nav a {
      font-size: 0.9375rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .desktop-nav a:hover,
    .desktop-nav a.active {
      color: var(--text-main);
    }

    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.875rem;
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
      min-height: 42px;
    }

    .btn-primary {
      background: linear-gradient(135deg, #0ea5e9, #0284c7);
      color: #ffffff;
      box-shadow: 0 2px 10px var(--accent-cyan-glow);
    }

    .btn-primary:hover {
      box-shadow: 0 4px 18px var(--accent-cyan-glow);
      filter: brightness(1.1);
    }

    .btn-outline {
      border-color: var(--border-bright);
      color: var(--text-main);
      background-color: rgba(255, 255, 255, 0.03);
    }

    .btn-outline:hover {
      background-color: rgba(255, 255, 255, 0.08);
      border-color: var(--text-muted);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text-main);
      padding: 8px;
      cursor: pointer;
    }

    /* 通用板块样式 */
    section {
      padding: 88px 0;
      position: relative;
    }

    .section-dark {
      background-color: #0b0f19;
      border-top: 1px solid var(--border-subtle);
      border-bottom: 1px solid var(--border-subtle);
    }

    .section-light-tint {
      background-color: #0d121f;
    }

    .section-header {
      margin-bottom: 56px;
    }

    .section-badge {
      display: inline-block;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      text-transform: uppercase;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      background-color: rgba(14, 165, 233, 0.1);
      color: var(--accent-cyan);
      border: 1px solid rgba(14, 165, 233, 0.25);
      margin-bottom: 16px;
      letter-spacing: 0.06em;
    }

    .section-title {
      font-size: 2.125rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      max-width: 820px;
      line-height: 1.7;
    }

    /* 1. Hero 视频官网沉浸首屏 */
    .hero-section {
      position: relative;
      padding: 120px 0 100px;
      overflow: hidden;
      min-height: 82vh;
      display: flex;
      align-items: center;
      border-bottom: 1px solid var(--border-subtle);
    }

    .hero-media-backdrop {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 1;
      overflow: hidden;
    }

    .hero-media-backdrop img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      filter: brightness(0.28) contrast(1.15);
      transform: scale(1.02);
    }

    .hero-overlay-grid {
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 60% 30%, rgba(14, 165, 233, 0.15) 0%, transparent 60%),
                  linear-gradient(to bottom, rgba(7, 9, 14, 0.7) 0%, #07090e 100%);
    }

    .hero-content-box {
      position: relative;
      z-index: 2;
      max-width: 920px;
    }

    .hero-title {
      font-size: 3.25rem;
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
      color: #ffffff;
    }

    .hero-title span {
      background: linear-gradient(120deg, #38bdf8, #818cf8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.1875rem;
      line-height: 1.8;
      color: #cbd5e1;
      margin-bottom: 36px;
      max-width: 800px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .video-play-hint {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 10px 18px;
      border-radius: var(--radius-sm);
      background-color: rgba(255, 255, 255, 0.08);
      border: 1px solid var(--border-bright);
      color: var(--text-main);
      font-size: 0.875rem;
      cursor: pointer;
      transition: var(--transition);
    }

    .video-play-hint:hover {
      background-color: rgba(255, 255, 255, 0.14);
      border-color: var(--accent-cyan);
    }

    .play-icon-box {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background-color: var(--accent-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #030712;
      font-size: 10px;
    }

    /* 2. 行业标准与合规徽章条 */
    .compliance-bar {
      padding: 32px 0;
      background-color: #0a0e18;
      border-bottom: 1px solid var(--border-subtle);
    }

    .compliance-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }

    .comp-item {
      padding: 12px 14px;
      background: rgba(18, 24, 41, 0.6);
      border: 1px solid rgba(51, 65, 85, 0.5);
      border-radius: var(--radius-sm);
      text-align: center;
    }

    .comp-code {
      font-family: var(--font-mono);
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--accent-cyan);
    }

    .comp-label {
      font-size: 0.75rem;
      color: var(--text-dim);
      margin-top: 4px;
    }

    /* 3. 适用人群与团队角色 */
    .personas-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .persona-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: var(--transition);
    }

    .persona-card:hover {
      border-color: var(--accent-cyan);
      transform: translateY(-4px);
    }

    .persona-tag {
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      color: var(--accent-orange);
      font-weight: 600;
      margin-bottom: 12px;
      display: block;
    }

    .persona-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: #ffffff;
    }

    .persona-desc {
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.7;
    }

    /* 4. 谁适合 / 谁不适合（对比选型清晰界定） */
    .fit-comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .fit-panel {
      padding: 36px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
    }

    .fit-panel.suitable {
      background-color: rgba(14, 165, 233, 0.03);
      border-color: rgba(14, 165, 233, 0.3);
    }

    .fit-panel.unsuitable {
      background-color: rgba(15, 23, 42, 0.5);
      border-color: rgba(51, 65, 85, 0.4);
    }

    .fit-panel-title {
      font-size: 1.375rem;
      font-weight: 700;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .fit-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .fit-item {
      display: flex;
      gap: 12px;
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .fit-icon {
      font-weight: 800;
      font-family: var(--font-mono);
      flex-shrink: 0;
      margin-top: 2px;
    }

    .fit-item.pass .fit-icon { color: #10b981; }
    .fit-item.fail .fit-icon { color: #ef4444; }

    /* 5. 软硬解耦全栈架构概览 */
    .arch-overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .arch-text h3 {
      font-size: 1.75rem;
      margin-bottom: 20px;
      font-weight: 700;
    }

    .arch-layers {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .arch-layer-card {
      padding: 18px 22px;
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-left: 4px solid var(--accent-cyan);
      border-radius: var(--radius-sm);
    }

    .layer-head {
      display: flex;
      justify-content: space-between;
      margin-bottom: 6px;
    }

    .layer-name {
      font-weight: 600;
      font-size: 1rem;
      color: #ffffff;
    }

    .layer-std {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--text-dim);
    }

    .layer-body {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 6. 核心优势六联矩阵 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-card {
      background: var(--bg-card);
      padding: 30px;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      transition: var(--transition);
      position: relative;
    }

    .adv-card:hover {
      border-color: var(--accent-cyan);
      background-color: var(--bg-card-hover);
    }

    .adv-index {
      font-family: var(--font-mono);
      font-size: 1.5rem;
      font-weight: 800;
      color: rgba(14, 165, 233, 0.35);
      margin-bottom: 16px;
    }

    .adv-title {
      font-size: 1.1875rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #ffffff;
    }

    .adv-desc {
      font-size: 0.90625rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 7. 匹配方案：三大产品线深度拆解 */
    .solutions-triplet {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .sol-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .sol-thumb {
      height: 200px;
      position: relative;
      overflow: hidden;
    }

    .sol-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .sol-card:hover .sol-thumb img {
      transform: scale(1.05);
    }

    .sol-body {
      padding: 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .sol-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #ffffff;
    }

    .sol-spec-list {
      margin: 18px 0;
      padding: 14px;
      background-color: #080c14;
      border-radius: var(--radius-sm);
      border: 1px dashed var(--border-bright);
    }

    .spec-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.8125rem;
      padding: 4px 0;
    }

    .spec-key { color: var(--text-dim); }
    .spec-val { color: var(--accent-cyan); font-family: var(--font-mono); font-weight: 600; }

    .sol-card .btn {
      margin-top: auto;
    }

    /* 8. 深色沉浸式异构多核协同仿真舱 */
    .sim-console-box {
      background-color: #030508;
      border: 1px solid #1e293b;
      border-radius: var(--radius-lg);
      padding: 36px;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: center;
    }

    .code-mock-window {
      background-color: #060911;
      border: 1px solid #1e2a44;
      border-radius: var(--radius-sm);
      overflow: hidden;
    }

    .window-bar {
      height: 32px;
      background-color: #0c1322;
      border-bottom: 1px solid #1e2a44;
      display: flex;
      align-items: center;
      padding: 0 12px;
      gap: 6px;
    }

    .w-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: #334155;
    }

    .code-body {
      padding: 20px;
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      color: #94a3b8;
      line-height: 1.6;
      white-space: pre-wrap;
    }

    .token-k { color: #38bdf8; font-weight: 600; }
    .token-f { color: #fbbf24; }
    .token-c { color: #64748b; }

    /* 9. 量产落地数据看板 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metric-box {
      padding: 28px 16px;
      border-right: 1px solid var(--border-subtle);
    }

    .metric-box:last-child {
      border-right: none;
    }

    .metric-val {
      font-family: var(--font-mono);
      font-size: 2.75rem;
      font-weight: 800;
      color: #ffffff;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .metric-unit {
      color: var(--accent-cyan);
      font-size: 1.5rem;
    }

    .metric-lbl {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 10. 用户故事与主机厂联合研发实战 */
    .case-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 60px;
    }

    .case-block:last-child {
      margin-bottom: 0;
    }

    .case-block.reverse {
      direction: rtl;
    }

    .case-block.reverse .case-content {
      direction: ltr;
    }

    .case-img-holder {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-bright);
    }

    .case-tag {
      font-size: 0.75rem;
      font-family: var(--font-mono);
      color: var(--accent-orange);
      margin-bottom: 8px;
      font-weight: 700;
    }

    .case-title {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: #ffffff;
    }

    .case-text {
      color: var(--text-muted);
      font-size: 0.9375rem;
      line-height: 1.7;
      margin-bottom: 20px;
    }

    /* 11. 入口分流：开发者资源与芯片适配库 */
    .portal-split-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .portal-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .portal-item:hover {
      border-color: var(--accent-cyan);
      background: var(--bg-card-hover);
    }

    .portal-h {
      font-size: 1.125rem;
      font-weight: 600;
      margin-bottom: 10px;
      color: #ffffff;
    }

    .portal-p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .portal-link {
      font-size: 0.8125rem;
      color: var(--accent-cyan);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 12. 前沿资讯与白皮书摘要 */
    .news-articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .news-card {
      display: flex;
      gap: 20px;
      background-color: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: var(--transition);
    }

    .news-card:hover {
      border-color: var(--border-bright);
    }

    .news-img {
      width: 140px;
      height: 110px;
      flex-shrink: 0;
      border-radius: var(--radius-sm);
      overflow: hidden;
    }

    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-meta {
      font-size: 0.75rem;
      color: var(--text-dim);
      font-family: var(--font-mono);
      display: flex;
      gap: 12px;
      margin-bottom: 6px;
    }

    .news-headline {
      font-size: 1.0625rem;
      font-weight: 600;
      color: #ffffff;
      line-height: 1.4;
      margin-bottom: 6px;
    }

    .news-summary {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 13. 保障说明与量产技术支持承诺 */
    .guarantee-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .guar-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 24px;
      border-top: 3px solid #10b981;
    }

    .guar-title {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #ffffff;
    }

    .guar-text {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 14. 试用与评估申请（强收口转化表单） */
    .action-cta-wrap {
      background: linear-gradient(145deg, #0e172a, #070a12);
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 48px;
    }

    .form-box {
      background-color: #0b0f19;
      border: 1px solid var(--border-subtle);
      padding: 32px;
      border-radius: var(--radius-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      background-color: #060911;
      border: 1px solid var(--border-bright);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      color: #ffffff;
      font-size: 0.875rem;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 2px var(--accent-cyan-glow);
    }

    .form-privacy {
      font-size: 0.75rem;
      color: var(--text-dim);
      margin-top: 14px;
      line-height: 1.5;
    }

    /* 底部固定转化条 (Sticky Bottom Bar) */
    .sticky-action-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 60px;
      background-color: rgba(11, 15, 25, 0.95);
      border-top: 1px solid rgba(14, 165, 233, 0.3);
      backdrop-filter: blur(10px);
      z-index: 80;
      display: flex;
      align-items: center;
      transition: transform 0.3s ease;
      transform: translateY(100%);
    }

    .sticky-action-bar.visible {
      transform: translateY(0);
    }

    .sticky-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .sticky-lead {
      font-size: 0.9375rem;
      color: #ffffff;
      font-weight: 500;
    }

    .sticky-lead strong {
      color: var(--accent-cyan);
      font-family: var(--font-mono);
    }

    /* 统一页脚 */
    footer.main-footer {
      background-color: #03060c;
      border-top: 1px solid var(--border-subtle);
      padding: 64px 0 32px;
      color: var(--text-dim);
      font-size: 0.875rem;
    }

    .footer-columns {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-col-title {
      color: #ffffff;
      font-size: 0.9375rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a:hover {
      color: var(--accent-cyan);
    }

    .footer-bottom {
      border-top: 1px solid #131b2e;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      display: none;
      position: fixed;
      inset: 0;
      background-color: rgba(7, 9, 14, 0.98);
      z-index: 100;
      flex-direction: column;
      padding: 24px;
    }

    .mobile-drawer.active {
      display: flex;
    }

    .mobile-drawer-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 36px;
    }

    .mobile-drawer-links {
      display: flex;
      flex-direction: column;
      gap: 20px;
      font-size: 1.125rem;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .compliance-grid { grid-template-columns: repeat(3, 1fr); }
      .advantage-grid { grid-template-columns: repeat(2, 1fr); }
      .solutions-triplet { grid-template-columns: 1fr; }
      .portal-split-grid { grid-template-columns: repeat(2, 1fr); }
      .metrics-bar { grid-template-columns: repeat(2, 1fr); }
      .metric-box { border-right: none; border-bottom: 1px solid var(--border-subtle); }
      .guarantee-bar-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-columns { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .top-meta-bar { display: none; }
      .desktop-nav, .header-cta { display: none; }
      .mobile-toggle { display: block; }
      
      .hero-title { font-size: 2.125rem; }
      .hero-section { padding: 80px 0 60px; min-height: auto; }
      
      .fit-comparison-grid,
      .arch-overview-grid,
      .sim-console-box,
      .case-block,
      .case-block.reverse,
      .action-cta-wrap,
      .news-articles-grid,
      .personas-grid {
        grid-template-columns: 1fr;
      }
      
      .advantage-grid { grid-template-columns: 1fr; }
      .portal-split-grid { grid-template-columns: 1fr; }
      .guarantee-bar-grid { grid-template-columns: 1fr; }
      
      .footer-columns { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
      .sticky-action-bar { height: auto; padding: 12px 0; }
      .sticky-content { flex-direction: column; gap: 10px; text-align: center; }
    }