:root {
      --bg: #ffffff;
      --surface: #f5f5f7;
      --surface-warm: #fbfbfd;
      --fg: #1d1d1f;
      --fg-2: #424245;
      --muted: #6e6e73;
      --meta: #86868b;
      --border: #d2d2d7;
      --border-soft: #e8e8ed;
      --accent: #0071e3;
      --accent-on: #ffffff;
      --accent-hover: #0077ed;
      --accent-active: #0066cc;
      --success: #16a34a;
      --warn: #eab308;
      --danger: #dc2626;
      --font-display:
        "SF Pro Display", "SF Pro Icons", "Helvetica Neue", Helvetica, Arial, sans-serif;
      --font-body:
        "SF Pro Text", "SF Pro Icons", "Helvetica Neue", Helvetica, Arial, sans-serif;
      --font-mono:
        "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Monaco, Consolas, monospace;
      --text-xs: 12px;
      --text-sm: 14px;
      --text-base: 17px;
      --text-lg: 21px;
      --text-xl: 28px;
      --text-2xl: 40px;
      --text-3xl: 56px;
      --text-4xl: 80px;
      --leading-body: 1.47;
      --leading-tight: 1.05;
      --tracking-display: -0.015em;
      --space-1: 4px;
      --space-2: 8px;
      --space-3: 12px;
      --space-4: 16px;
      --space-5: 20px;
      --space-6: 24px;
      --space-8: 32px;
      --space-12: 48px;
      --section-y-desktop: 100px;
      --section-y-tablet: 64px;
      --section-y-phone: 40px;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --radius-pill: 980px;
      --elev-flat: none;
      --elev-ring: 0 0 0 1px var(--border);
      --elev-raised: 0 12px 32px rgba(0, 0, 0, 0.08);
      --focus-ring: 0 0 0 4px color-mix(in oklab, var(--accent), transparent 65%);
      --motion-fast: 150ms;
      --motion-base: 220ms;
      --ease-standard: cubic-bezier(0.28, 0, 0.22, 1);
      --container-max: 1024px;
      --container-gutter-desktop: 22px;
      --container-gutter-tablet: 18px;
      --container-gutter-phone: 16px;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--fg);
      font-family: var(--font-body);
      font-size: var(--text-base);
      line-height: var(--leading-body);
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    img, svg { display: block; max-width: 100%; }
    a { color: inherit; text-decoration: none; }
    button, input, textarea, summary { font: inherit; }
    button { cursor: pointer; }
    p { margin: 0; text-wrap: pretty; }
    h1, h2, h3 { margin: 0; font-family: var(--font-display); text-wrap: balance; }
    ul { margin: 0; padding: 0; list-style: none; }
    :focus-visible {
      outline: none;
      box-shadow: var(--focus-ring);
      border-radius: var(--radius-sm);
    }

    .skip-link {
      position: absolute;
      left: var(--space-4);
      top: -200px;
      z-index: 100;
      padding: var(--space-3) var(--space-4);
      background: var(--fg);
      color: var(--bg);
      border-radius: var(--radius-md);
      transition: top var(--motion-fast) var(--ease-standard);
    }
    .skip-link:focus-visible { top: var(--space-4); }

    .container {
      width: min(100%, calc(var(--container-max) + (var(--container-gutter-desktop) * 2)));
      margin-inline: auto;
      padding-inline: var(--container-gutter-desktop);
    }
    .section {
      padding-block: clamp(var(--section-y-phone), 8vw, var(--section-y-desktop));
    }
    .section + .section { border-top: 1px solid var(--border-soft); }
    .stack { display: flex; flex-direction: column; }
    .row { display: flex; align-items: center; gap: var(--space-4); }
    .row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
    .grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-8); }
    .grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6); }
    .grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-5); }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: var(--space-2);
      font-family: var(--font-mono);
      font-size: var(--text-xs);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--muted);
    }
    .eyebrow::before {
      content: "";
      width: 18px;
      height: 1px;
      background: var(--meta);
    }
    h1 {
      font-size: clamp(44px, 7vw, var(--text-4xl));
      line-height: var(--leading-tight);
      letter-spacing: var(--tracking-display);
    }
    h2 {
      font-size: clamp(34px, 4.4vw, var(--text-2xl));
      line-height: 1.08;
      letter-spacing: -0.02em;
    }
    h3 {
      font-size: clamp(24px, 2vw, var(--text-xl));
      line-height: 1.14;
      letter-spacing: -0.01em;
    }
    .lead {
      max-width: 58ch;
      color: var(--fg-2);
      font-size: clamp(18px, 2vw, var(--text-lg));
      line-height: 1.5;
    }
    .meta, .num {
      font-family: var(--font-mono);
      font-size: var(--text-xs);
      color: var(--muted);
      font-variant-numeric: tabular-nums;
    }

    .topnav {
      position: sticky;
      top: 0;
      z-index: 40;
      backdrop-filter: blur(22px);
      background: color-mix(in oklab, var(--bg), transparent 10%);
      border-bottom: 1px solid color-mix(in oklab, var(--border), transparent 14%);
    }
    .topnav-inner {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-6);
      min-height: 76px;
      padding-block: var(--space-3);
    }
    .brand-lockup {
      display: flex;
      flex-direction: column;
      gap: var(--space-1);
      min-width: 0;
    }
    .logo {
      font-family: var(--font-display);
      font-size: 22px;
      font-weight: 600;
      letter-spacing: -0.03em;
    }
    .brand-note {
      font-size: var(--text-xs);
      color: var(--muted);
      font-family: var(--font-mono);
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }
    .topnav-menu {
      position: relative;
      display: flex;
      align-items: center;
      margin-left: auto;
    }
    .nav-toggle {
      display: none;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 var(--space-4);
      border: 1px solid var(--border);
      border-radius: var(--radius-pill);
      background: var(--bg);
      color: var(--fg);
      font-size: var(--text-sm);
      font-weight: 600;
      letter-spacing: -0.01em;
      cursor: pointer;
    }
    .topnav-panel {
      display: flex;
      align-items: center;
      gap: clamp(var(--space-4), 2vw, var(--space-6));
    }
    .topnav nav {
      display: flex;
      align-items: center;
      gap: clamp(var(--space-3), 1.8vw, var(--space-5));
      justify-content: center;
      min-width: 0;
    }
    .topnav nav a {
      font-size: var(--text-sm);
      color: var(--muted);
      white-space: nowrap;
      transition: color var(--motion-fast) var(--ease-standard);
    }
    .topnav nav a:hover,
    .topnav nav a[aria-current="page"] { color: var(--fg); }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: var(--space-2);
      flex-shrink: 0;
    }
    .nav-actions .btn {
      min-height: 40px;
      padding-inline: var(--space-4);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: var(--space-2);
      min-height: 44px;
      padding: 0 var(--space-5);
      border: 1px solid transparent;
      border-radius: var(--radius-pill);
      transition:
        transform var(--motion-fast) var(--ease-standard),
        border-color var(--motion-fast) var(--ease-standard),
        background var(--motion-fast) var(--ease-standard),
        color var(--motion-fast) var(--ease-standard);
    }
    .btn:hover { transform: translateY(-1px); }
    .btn-primary {
      background: var(--accent);
      color: var(--accent-on);
    }
    .btn-primary:hover { background: var(--accent-hover); }
    .btn-secondary {
      border-color: var(--border);
      background: var(--bg);
      color: var(--fg);
    }
    .btn-secondary:hover { border-color: var(--fg); }
    .btn-dark {
      background: var(--fg);
      color: var(--bg);
    }
    .btn-dark:hover { background: color-mix(in oklab, var(--fg), transparent 8%); }
    .btn-inline {
      padding-inline: 0;
      min-height: auto;
      border-radius: 0;
      background: transparent;
      color: var(--fg);
    }
    .btn-inline::after { content: "→"; }

    .card {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: clamp(var(--space-5), 3vw, var(--space-8));
      box-shadow: var(--elev-flat);
    }
    .card-muted { background: var(--surface); }
    .rule-card {
      border-top: 1px solid var(--fg);
      padding-top: var(--space-5);
    }
    .hero-shell {
      overflow: clip;
      background:
        radial-gradient(circle at 82% 18%, color-mix(in oklab, var(--accent), transparent 92%), transparent 22%),
        linear-gradient(160deg, color-mix(in oklab, var(--fg), black 18%) 0%, color-mix(in oklab, var(--fg), black 40%) 62%, color-mix(in oklab, var(--fg), black 54%) 100%);
      color: var(--bg);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
      gap: clamp(var(--space-8), 4.5vw, 72px);
      align-items: center;
    }
    .hero-copy {
      display: flex;
      flex-direction: column;
      gap: clamp(var(--space-4), 2vw, var(--space-6));
      justify-content: center;
      max-width: 500px;
      padding-block: var(--space-6);
    }
    .hero-copy h1 {
      max-width: 8.5ch;
      font-size: clamp(42px, 5.4vw, 74px);
    }
    .hero-copy .lead {
      max-width: 30rem;
      color: color-mix(in oklab, var(--bg), transparent 20%);
    }
    .hero-cta {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-3);
      padding-top: var(--space-3);
    }
    .proof-list {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: var(--space-4);
      padding-top: var(--space-4);
      border-top: 1px solid color-mix(in oklab, var(--bg), transparent 80%);
    }
    .proof-item {
      display: flex;
      flex-direction: column;
      gap: var(--space-1);
      padding-top: var(--space-4);
      border-top: 1px solid color-mix(in oklab, var(--bg), transparent 82%);
    }
    .proof-item strong {
      font-size: var(--text-sm);
      font-weight: 600;
      color: var(--bg);
    }
    .proof-item span {
      font-size: var(--text-xs);
      color: color-mix(in oklab, var(--bg), transparent 34%);
    }

    .hero-preview {
      position: relative;
      display: flex;
      flex-direction: column;
      width: 100%;
      max-width: 640px;
      margin-left: auto;
      padding: clamp(var(--space-4), 1.8vw, var(--space-5));
      border-radius: 32px;
      background:
        linear-gradient(180deg, color-mix(in oklab, var(--bg), transparent 97%), transparent 24%),
        color-mix(in oklab, var(--bg), transparent 96%);
      border: 1px solid color-mix(in oklab, var(--bg), transparent 90%);
      box-shadow:
        inset 0 1px 0 color-mix(in oklab, var(--bg), transparent 86%),
        0 32px 88px color-mix(in oklab, black, transparent 74%);
    }
    .hero-preview::after {
      content: "";
      position: absolute;
      inset: auto 22px 20px;
      height: 72px;
      border-radius: 50%;
      background: color-mix(in oklab, black, transparent 84%);
      filter: blur(24px);
      pointer-events: none;
    }
    .window-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-4);
      padding-bottom: var(--space-4);
      border-bottom: 1px solid color-mix(in oklab, var(--bg), transparent 86%);
    }
    .window-dots { display: flex; gap: var(--space-2); }
    .window-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: color-mix(in oklab, var(--bg), transparent 76%);
    }
    .window-title {
      font-size: var(--text-xs);
      color: color-mix(in oklab, var(--bg), transparent 38%);
      font-family: var(--font-mono);
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }
    .dashboard-shell {
      position: relative;
      display: grid;
      grid-template-columns: 168px 1fr;
      gap: var(--space-5);
      margin-top: var(--space-5);
      min-height: 460px;
    }
    .dashboard-nav,
    .dashboard-main,
    .mini-panel {
      border: 1px solid color-mix(in oklab, var(--bg), transparent 82%);
      border-radius: var(--radius-lg);
      background: color-mix(in oklab, var(--bg), var(--fg) 80%);
      box-shadow: inset 0 1px 0 color-mix(in oklab, var(--bg), transparent 86%);
    }
    .dashboard-nav {
      padding: var(--space-4);
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }
    .dashboard-pill {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
      padding: 12px;
      border-radius: var(--radius-md);
      background: color-mix(in oklab, var(--bg), transparent 95%);
      color: var(--bg);
      font-size: var(--text-sm);
    }
    .dashboard-pill.is-active {
      background:
        linear-gradient(135deg, color-mix(in oklab, var(--accent), transparent 88%), transparent),
        color-mix(in oklab, var(--bg), transparent 94%);
      border: 1px solid color-mix(in oklab, var(--bg), transparent 86%);
    }
    .dashboard-pill.is-muted {
      background: transparent;
      color: color-mix(in oklab, var(--bg), transparent 34%);
    }
    .badge-count {
      min-width: 22px;
      min-height: 22px;
      padding-inline: var(--space-2);
      border-radius: var(--radius-pill);
      background: var(--danger);
      color: var(--bg);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      font-size: 11px;
      font-variant-numeric: tabular-nums;
    }
    .dashboard-main {
      padding: clamp(var(--space-4), 1.8vw, var(--space-5));
      display: flex;
      flex-direction: column;
      gap: var(--space-4);
    }
    .dashboard-summary {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: var(--space-3);
    }
    .summary-chip {
      display: flex;
      flex-direction: column;
      gap: var(--space-1);
      padding: var(--space-4);
      border-radius: var(--radius-md);
      border: 1px solid color-mix(in oklab, var(--bg), transparent 88%);
      background: color-mix(in oklab, var(--bg), transparent 95%);
    }
    .summary-chip strong {
      color: var(--bg);
      font-size: var(--text-sm);
    }
    .summary-chip span {
      color: color-mix(in oklab, var(--bg), transparent 34%);
      font-family: var(--font-mono);
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }
    .dashboard-top,
    .mini-row,
    .invoice-row,
    .action-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-4);
    }
    .dashboard-top strong,
    .mini-row strong,
    .invoice-row strong,
    .action-row strong { color: var(--bg); font-size: var(--text-sm); }
    .dashboard-top span,
    .mini-row span,
    .invoice-row span,
    .action-row span {
      color: color-mix(in oklab, var(--bg), transparent 34%);
      font-size: var(--text-xs);
      font-family: var(--font-mono);
    }
    .mini-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
      gap: var(--space-4);
    }
    .hero-focus {
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(180px, 0.88fr);
      gap: var(--space-4);
      padding: clamp(var(--space-4), 1.8vw, var(--space-5));
      border-radius: 22px;
      border: 1px solid color-mix(in oklab, var(--bg), transparent 86%);
      background:
        linear-gradient(180deg, color-mix(in oklab, var(--bg), transparent 95%), color-mix(in oklab, var(--accent), transparent 97%)),
        color-mix(in oklab, var(--bg), transparent 96%);
    }
    .hero-focus-copy {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }
    .hero-focus-copy strong {
      font-family: var(--font-display);
      font-size: clamp(24px, 2.2vw, 30px);
      line-height: 1.08;
      letter-spacing: -0.02em;
      color: var(--bg);
    }
    .hero-focus-copy p {
      color: color-mix(in oklab, var(--bg), transparent 30%);
      font-size: var(--text-sm);
    }
    .hero-focus-side {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      justify-content: space-between;
    }
    .focus-stat {
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
      padding: var(--space-4);
      border-radius: var(--radius-md);
      border: 1px solid color-mix(in oklab, var(--bg), transparent 88%);
      background: color-mix(in oklab, var(--bg), transparent 95%);
    }
    .focus-stat strong {
      color: var(--bg);
      font-size: var(--text-sm);
    }
    .focus-stat span {
      color: color-mix(in oklab, var(--bg), transparent 34%);
      font-size: var(--text-xs);
      font-family: var(--font-mono);
    }
    .mini-panel {
      padding: var(--space-4);
      min-height: 116px;
      justify-content: space-between;
      display: flex;
      flex-direction: column;
    }
    .progress-track {
      height: 6px;
      border-radius: var(--radius-pill);
      background: color-mix(in oklab, var(--bg), transparent 92%);
      overflow: hidden;
    }
    .progress-track span {
      display: block;
      height: 100%;
      width: 72%;
      border-radius: inherit;
      background: color-mix(in oklab, var(--bg), transparent 8%);
    }
    .invoice-list,
    .action-list {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }
    .invoice-row,
    .action-row {
      padding: var(--space-3) var(--space-4);
      border-radius: var(--radius-md);
      background: color-mix(in oklab, var(--bg), transparent 94%);
    }
    .hero-preview .tag {
      color: color-mix(in oklab, var(--bg), transparent 18%);
      border-color: color-mix(in oklab, var(--bg), transparent 76%);
      background: transparent;
    }
    .hero-preview .tag-success {
      color: color-mix(in oklab, var(--success), var(--bg) 24%);
      border-color: color-mix(in oklab, var(--success), transparent 68%);
      background: color-mix(in oklab, var(--success), transparent 90%);
    }
    .hero-preview .tag-warning {
      color: color-mix(in oklab, var(--warn), var(--bg) 22%);
      border-color: color-mix(in oklab, var(--warn), transparent 70%);
      background: color-mix(in oklab, var(--warn), transparent 90%);
    }
    .hero-preview-meta {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: var(--space-4);
      margin-top: var(--space-4);
    }
    .hero-floating-card {
      position: static;
      width: auto;
      padding: var(--space-4);
      border-radius: 18px;
      border: 1px solid color-mix(in oklab, var(--bg), transparent 86%);
      background:
        linear-gradient(180deg, color-mix(in oklab, var(--bg), transparent 95%), transparent),
        color-mix(in oklab, var(--bg), var(--fg) 78%);
      box-shadow: 0 18px 34px color-mix(in oklab, black, transparent 80%);
    }
    .hero-floating-card strong {
      display: block;
      color: var(--bg);
      font-size: var(--text-sm);
      margin-bottom: var(--space-2);
    }
    .hero-floating-card p {
      color: color-mix(in oklab, var(--bg), transparent 34%);
      font-size: var(--text-xs);
    }
    .hero-preview--visual {
      gap: var(--space-4);
      padding: clamp(var(--space-4), 1.8vw, var(--space-5));
    }
    .hero-preview--visual::after { display: none; }
    .screen-showcase {
      display: grid;
      grid-template-columns: minmax(0, 1.06fr) minmax(260px, 0.94fr);
      gap: var(--space-4);
      align-items: start;
    }
    .screen-rail,
    .screen-row {
      display: grid;
      gap: var(--space-4);
    }
    .screen-row {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .screen-row--three {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .screen-card {
      margin: 0;
      overflow: hidden;
      border-radius: 24px;
      border: 1px solid var(--border);
      background: var(--bg);
      box-shadow: var(--elev-raised);
    }
    .screen-card img {
      width: 100%;
      height: auto;
      display: block;
    }
    .screen-card figcaption {
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
      padding: var(--space-4);
      border-top: 1px solid var(--border-soft);
      background: color-mix(in oklab, var(--bg), var(--surface) 26%);
    }
    .screen-card strong {
      font-size: var(--text-sm);
      color: var(--fg);
    }
    .screen-card p {
      font-size: var(--text-sm);
      color: var(--fg-2);
    }
    .screen-card--phone {
      max-width: 320px;
      margin-inline: auto;
      border-radius: 34px;
    }
    .screen-card--tall {
      max-width: 520px;
      margin-inline: auto;
    }
    .screen-band {
      margin-top: clamp(var(--space-6), 4vw, 56px);
    }
    .screen-band .section-header {
      margin-bottom: var(--space-5);
    }
    .tag {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 28px;
      padding-inline: var(--space-3);
      border-radius: var(--radius-pill);
      border: 1px solid var(--border);
      color: var(--muted);
      font-size: var(--text-xs);
      font-family: var(--font-mono);
      letter-spacing: 0.04em;
      text-transform: uppercase;
    }
    .tag-success {
      color: var(--success);
      border-color: color-mix(in oklab, var(--success), transparent 72%);
      background: color-mix(in oklab, var(--success), transparent 92%);
    }
    .tag-warning {
      color: color-mix(in oklab, var(--fg), var(--warn) 52%);
      border-color: color-mix(in oklab, var(--warn), transparent 72%);
      background: color-mix(in oklab, var(--warn), transparent 92%);
    }

    .subtle-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: var(--space-5);
    }
    .subtle-grid .card { min-height: 220px; }
    .section-header {
      display: flex;
      flex-direction: column;
      gap: var(--space-4);
      max-width: 680px;
      margin-bottom: clamp(var(--space-6), 4vw, 56px);
    }
    .feature-card {
      display: flex;
      flex-direction: column;
      gap: var(--space-4);
      min-height: 100%;
    }
    .feature-mark {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      border: 1px solid var(--border);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--fg);
      background: var(--surface);
    }
    .feature-mark svg { width: 18px; height: 18px; }
    .feature-points {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      margin-top: auto;
    }
    .feature-points li {
      position: relative;
      padding-left: var(--space-5);
      color: var(--fg-2);
      font-size: var(--text-sm);
    }
    .feature-points li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 10px;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: color-mix(in oklab, var(--fg), var(--bg) 82%);
    }

    .kpi-card {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      min-height: 170px;
    }
    .kpi-card strong {
      font-size: clamp(34px, 4vw, 52px);
      line-height: 1;
      letter-spacing: -0.04em;
      font-family: var(--font-display);
    }
    .kpi-card p { color: var(--fg-2); }

    .tabs-shell {
      display: grid;
      grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
      gap: var(--space-8);
      align-items: start;
    }
    .tab-list {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }
    .tab-button {
      width: 100%;
      text-align: left;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      background: var(--bg);
      padding: var(--space-5);
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
      transition: border-color var(--motion-fast) var(--ease-standard), transform var(--motion-fast) var(--ease-standard);
    }
    .tab-button:hover { transform: translateY(-1px); border-color: var(--fg); }
    .tab-button[aria-selected="true"] {
      background: var(--surface);
      border-color: var(--fg);
    }
    .tab-button strong {
      font-size: var(--text-sm);
      color: var(--fg);
    }
    .tab-button span {
      color: var(--muted);
      font-size: var(--text-sm);
    }
    .tab-panels { position: relative; }
    .tab-panel[hidden] { display: none; }
    .tab-panel {
      border: 1px solid var(--border);
      border-radius: 28px;
      overflow: hidden;
      background: var(--bg);
      box-shadow: var(--elev-raised);
    }
    .tab-panel header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-4);
      padding: var(--space-5) var(--space-6);
      border-bottom: 1px solid var(--border-soft);
      background: var(--surface);
    }
    .tab-panel main {
      padding: var(--space-6);
      display: grid;
      gap: var(--space-5);
    }
    .mock-grid {
      display: grid;
      gap: var(--space-4);
      grid-template-columns: 1.2fr 0.8fr;
    }
    .mock-screen,
    .mock-side {
      border: 1px solid var(--border);
      border-radius: 22px;
      background: var(--surface-warm);
      padding: var(--space-5);
    }
    .mock-screen { display: flex; flex-direction: column; gap: var(--space-4); }
    .mock-header,
    .mock-chip-row,
    .mock-table-row,
    .alert-row,
    .badge-preview,
    .invoice-card-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
    }
    .mock-chip-row { justify-content: flex-start; flex-wrap: wrap; }
    .chip {
      padding: 6px 12px;
      border-radius: var(--radius-pill);
      border: 1px solid var(--border);
      background: var(--bg);
      color: var(--muted);
      font-size: var(--text-xs);
      font-family: var(--font-mono);
    }
    .mock-table {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }
    .mock-table-row {
      padding: var(--space-4);
      border-radius: var(--radius-md);
      background: var(--bg);
      border: 1px solid var(--border-soft);
    }
    .mock-table-row strong,
    .mock-header strong,
    .alert-row strong,
    .badge-preview strong,
    .invoice-card-row strong { font-size: var(--text-sm); }
    .muted-copy,
    .mock-table-row span,
    .mock-header span,
    .alert-row span,
    .badge-preview span,
    .invoice-card-row span {
      font-size: var(--text-xs);
      color: var(--muted);
      font-family: var(--font-mono);
    }
    .alert-stack,
    .invoice-stack {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }
    .alert-row,
    .invoice-card-row {
      padding: var(--space-4);
      border-radius: var(--radius-md);
      background: color-mix(in oklab, var(--bg), var(--surface) 38%);
      border: 1px solid var(--border-soft);
    }
    .alert-row.is-critical {
      border-color: color-mix(in oklab, var(--danger), transparent 72%);
      background: color-mix(in oklab, var(--danger), transparent 94%);
    }
    .qr-box {
      min-height: 220px;
      border-radius: 26px;
      border: 1px solid var(--border);
      background:
        linear-gradient(180deg, var(--bg), color-mix(in oklab, var(--surface), transparent 24%));
      padding: var(--space-5);
      display: grid;
      place-items: center;
    }
    .qr-grid {
      width: min(240px, 100%);
      aspect-ratio: 1;
      display: grid;
      grid-template-columns: repeat(9, 1fr);
      gap: 5px;
    }
    .qr-grid span {
      border-radius: 2px;
      background: var(--fg);
    }
    .qr-grid span:nth-child(4n) { background: transparent; }
    .qr-grid span:nth-child(5n) { background: color-mix(in oklab, var(--fg), transparent 24%); }
    .invoice-total {
      padding-top: var(--space-4);
      border-top: 1px solid var(--border);
    }

    .comparison-shell {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: var(--space-5);
    }
    .comparison-card {
      padding: clamp(var(--space-5), 3vw, var(--space-8));
      border-radius: 28px;
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      gap: var(--space-5);
      min-height: 100%;
    }
    .comparison-card h3 { font-size: 30px; }
    .comparison-card ul {
      display: flex;
      flex-direction: column;
      gap: var(--space-4);
    }
    .comparison-card li {
      position: relative;
      padding-left: 30px;
      color: var(--fg-2);
    }
    .comparison-card li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 9px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      border: 1px solid var(--border);
      background: var(--surface);
    }
    .comparison-card.is-current {
      background: var(--surface);
      border-color: var(--fg);
      box-shadow: var(--elev-raised);
    }

    .trust-band {
      border-radius: 28px;
      background: var(--surface);
      border: 1px solid var(--border);
      padding: clamp(var(--space-5), 3vw, var(--space-8));
    }
    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: var(--space-5);
    }
    .trust-grid article {
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
    }
    .trust-grid strong {
      font-size: var(--text-sm);
      color: var(--fg);
    }
    .trust-grid p {
      font-size: var(--text-sm);
      color: var(--fg-2);
    }

    .cta-shell {
      text-align: center;
      max-width: 740px;
      margin-inline: auto;
      display: flex;
      flex-direction: column;
      gap: var(--space-5);
    }
    .cta-actions {
      display: flex;
      gap: var(--space-3);
      justify-content: center;
      flex-wrap: wrap;
    }
    .pagefoot {
      padding-block: var(--space-8);
      border-top: 1px solid var(--border);
      background: var(--surface);
    }
    .foot-grid {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: var(--space-6);
      flex-wrap: wrap;
    }
    .foot-links {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-4);
      color: var(--muted);
      font-size: var(--text-sm);
    }
    .foot-links a:hover { color: var(--fg); }

    @media (max-width: 1180px) {
      .hero-grid,
      .screen-showcase,
      .tabs-shell,
      .mock-grid,
      .grid-3,
      .grid-4,
      .trust-grid,
      .comparison-shell {
        grid-template-columns: 1fr;
      }
      .screen-row,
      .screen-row--three { grid-template-columns: 1fr; }
      .subtle-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .proof-list { grid-template-columns: 1fr; }
      .dashboard-shell { grid-template-columns: 1fr; }
      .dashboard-summary,
      .hero-focus,
      .mini-grid { grid-template-columns: 1fr; }
      .hero-copy,
      .hero-preview { max-width: none; }
      .hero-copy h1 { max-width: 9ch; }
    }
    @media (max-width: 980px) {
      .topnav-inner {
        min-height: auto;
        align-items: center;
      }
      .topnav-menu {
        position: relative;
        margin-left: auto;
      }
      .nav-toggle {
        display: inline-flex;
      }
      .topnav-panel {
        position: absolute;
        top: calc(100% + var(--space-3));
        right: 0;
        min-width: min(360px, calc(100vw - (var(--container-gutter-tablet) * 2)));
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-4);
        padding: var(--space-4);
        border-radius: 24px;
        border: 1px solid var(--border);
        background: color-mix(in oklab, var(--bg), var(--surface) 20%);
        box-shadow: var(--elev-raised);
      }
      .topnav-menu.is-open .topnav-panel { display: flex; }
      .topnav nav,
      .nav-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
      }
      .topnav nav { gap: 0; }
      .topnav nav a {
        padding: var(--space-3) 0;
        border-bottom: 1px solid var(--border-soft);
      }
      .topnav nav a:last-child { border-bottom: 0; }
      .nav-actions .btn { width: 100%; }
    }
    @media (max-width: 880px) {
      .container { padding-inline: var(--container-gutter-tablet); }
      .row-between,
      .hero-cta,
      .cta-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-cta .btn,
      .cta-actions .btn { width: 100%; }
      .grid-2,
      .subtle-grid,
      .hero-preview-meta { grid-template-columns: 1fr; }
    }
    @media (max-width: 520px) {
      .container { padding-inline: var(--container-gutter-phone); }
      .topnav-panel {
        right: auto;
        left: 0;
        min-width: 100%;
      }
      .hero-preview,
      .tab-panel,
      .screen-card,
      .comparison-card,
      .trust-band { border-radius: 22px; }
      .window-bar,
      .tab-panel header,
      .topnav-inner { gap: var(--space-3); }
      .hero-copy h1 { font-size: clamp(38px, 13vw, 56px); }
    }