:root {
    --wood-50: #faf6f1;
    --wood-100: #f0e8dc;
    --wood-200: #e2d2bb;
    --wood-300: #d1b896;
    --wood-400: #c19b6d;
    --wood-500: #a67c52;
    --wood-600: #8b6342;
    --wood-700: #6d4c35;
    --wood-800: #4a3425;
    --wood-900: #2d1f17;
    --sawdust: #f7f3ed;
    --chalk: #ffffff;
    --graphite: #1a1612;
    --pencil: #3d342b;
    --steel: #6b7280;
    --blade: #e74c3c;
    --blade-hover: #c0392b;
    --green-ok: #27ae60;
    --green-light: #eafaf1;
    --amber: #f39c12;
    --amber-light: #fef9e7;
    --kerf: rgba(231, 76, 60, 0.15);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(45,31,23,0.06);
    --shadow-md: 0 4px 16px rgba(45,31,23,0.08);
    --shadow-lg: 0 8px 32px rgba(45,31,23,0.12);
    --shadow-xl: 0 16px 48px rgba(45,31,23,0.16);
    --font-body: 'DM Sans', system-ui, sans-serif;
    --font-display: 'Fraunces', Georgia, serif;
    --font-mono: 'JetBrains Mono', monospace;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: var(--font-body);
    color: var(--pencil);
    background: var(--sawdust);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  /* ═══════════════════ NAV ═══════════════════ */
  nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(247, 243, 237, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--wood-200);
    padding: 0 24px;
  }

  .nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--graphite);
  }

  .logo-icon {
    width: 28px;
    height: 28px;
    background: var(--wood-800);
    border-radius: 6px;
    display: grid;
    place-items: center;
    position: relative;
    overflow: hidden;
  }

  .logo-icon::before {
    content: '';
    position: absolute;
    width: 1px;
    height: 100%;
    background: var(--blade);
    left: 60%;
    opacity: 0.9;
  }

  .logo-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    background: var(--blade);
    top: 40%;
    opacity: 0.9;
  }

  .logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.3px;
  }

  .logo-text span { color: var(--wood-500); }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
  }

  .nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--pencil);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity 0.2s;
  }

  .nav-links a:hover { opacity: 1; }

  .nav-cta {
    background: var(--wood-800) !important;
    color: var(--chalk) !important;
    padding: 7px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px !important;
    font-weight: 600 !important;
    opacity: 1 !important;
    transition: background 0.2s !important;
  }

  .nav-cta:hover { background: var(--graphite) !important; }

  .nav-burger {
    display: none;
    background: transparent;
    border: 0;
    width: 40px;
    height: 40px;
    cursor: pointer;
    padding: 0;
    position: relative;
    margin-left: auto;
  }
  .nav-burger span {
    display: block;
    position: absolute;
    left: 8px;
    right: 8px;
    height: 2px;
    background: var(--graphite);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s, top 0.2s;
  }
  .nav-burger span:nth-child(1) { top: 13px; }
  .nav-burger span:nth-child(2) { top: 19px; }
  .nav-burger span:nth-child(3) { top: 25px; }
  .nav-burger.is-open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
  .nav-burger.is-open span:nth-child(2) { opacity: 0; }
  .nav-burger.is-open span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

  @media (max-width: 760px) {
    .nav-burger { display: block; }
    .nav-links {
      display: none;
      position: absolute;
      top: 56px;
      left: 0;
      right: 0;
      background: var(--sawdust);
      border-bottom: 1px solid var(--wood-200);
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      padding: 8px 24px 16px;
      box-shadow: var(--shadow-md);
      z-index: 99;
    }
    .nav-links.is-open { display: flex; }
    .nav-links li {
      width: 100%;
      padding: 12px 0;
      border-bottom: 1px solid var(--wood-200);
    }
    .nav-links li:last-child { border-bottom: 0; }
    .nav-links a { font-size: 16px; opacity: 0.85; display: block; }
    .nav-cta {
      display: inline-block;
      text-align: center;
      margin-top: 8px;
      padding: 10px 18px !important;
      font-size: 14px !important;
    }
    .nav-user { display: flex; flex-direction: column; gap: 8px; align-items: stretch; }
    .nav-user-link { padding: 6px 0; }
  }

  /* ═══════════════════ HERO - TOOL FIRST ═══════════════════ */
  .hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 60px;
  }

  .hero-header {
    text-align: center;
    margin-bottom: 36px;
  }

  .early-access-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
    color: var(--wood-700);
    background: var(--wood-100);
    border: 1px solid var(--wood-300);
    padding: 6px 14px;
    border-radius: 999px;
    text-decoration: none;
    margin-bottom: 18px;
    transition: background 0.15s, color 0.15s;
  }
  .early-access-badge:hover {
    background: var(--wood-200);
    color: var(--wood-800);
  }

  .hero-header h1 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    color: var(--graphite);
    letter-spacing: -1px;
    line-height: 1.15;
    margin-bottom: 12px;
  }

  .hero-header h1 .accent { color: var(--wood-500); }

  .hero-header p {
    font-size: 16px;
    color: var(--steel);
    max-width: 520px;
    margin: 0 auto;
  }

  /* ─── Tool Container ─── */
  .tool {
    background: var(--chalk);
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
  }

  .tool-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    min-height: 560px;
  }

  @media (max-width: 900px) {
    .tool-grid { grid-template-columns: 1fr; }
  }

  /* ─── Input Panel ─── */
  .input-panel {
    padding: 28px;
    border-right: 1px solid var(--wood-200);
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: var(--chalk);
  }

  .panel-section h3 {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--steel);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .panel-section h3 .step {
    background: var(--wood-800);
    color: var(--chalk);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-family: var(--font-mono);
  }

  .stock-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .input-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--pencil);
    opacity: 0.7;
  }

  .input-group input, .input-group select {
    width: 100%;
    font-family: var(--font-mono);
    font-size: 14px;
    padding: 8px 10px;
    border: 1.5px solid var(--wood-200);
    border-radius: var(--radius-sm);
    background: var(--sawdust);
    color: var(--graphite);
    transition: border-color 0.15s;
    outline: none;
  }

  .input-group input:focus, .input-group select:focus {
    border-color: var(--wood-500);
  }

  .input-group input::placeholder {
    color: var(--wood-300);
  }

  .input-full { grid-column: 1 / -1; }

  /* ─── Parts Table ─── */
  .parts-table-wrap {
    flex: 1;
    overflow-y: auto;
    max-height: 220px;
    border: 1.5px solid var(--wood-200);
    border-radius: var(--radius-sm);
    background: var(--sawdust);
  }

  .parts-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
  }

  .parts-table thead {
    position: sticky;
    top: 0;
    z-index: 2;
  }

  .parts-table th {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--steel);
    background: var(--wood-100);
    padding: 8px 10px;
    text-align: left;
    border-bottom: 1px solid var(--wood-200);
  }

  .parts-table td {
    padding: 6px 10px;
    border-bottom: 1px solid var(--wood-100);
    font-family: var(--font-mono);
    font-size: 13px;
  }

  .parts-table tr:last-child td { border-bottom: none; }

  .parts-table .part-color {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    display: inline-block;
  }

  .add-part-row {
    display: flex;
    gap: 6px;
    margin-top: 4px;
  }

  .add-part-row input {
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 7px 8px;
    border: 1.5px dashed var(--wood-300);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--graphite);
    outline: none;
    flex: 1;
    min-width: 0;
  }

  .add-part-row input::placeholder { color: var(--wood-300); font-size: 12px; }
  .add-part-row input:focus { border-color: var(--wood-500); border-style: solid; }

  .btn-add {
    background: var(--wood-100);
    border: 1.5px solid var(--wood-200);
    border-radius: var(--radius-sm);
    color: var(--wood-600);
    font-size: 18px;
    width: 34px;
    cursor: pointer;
    transition: all 0.15s;
    display: grid;
    place-items: center;
  }

  .btn-add:hover {
    background: var(--wood-200);
    color: var(--wood-800);
  }

  /* ─── Settings Row ─── */
  .settings-row {
    display: flex;
    gap: 12px;
    align-items: end;
  }

  .settings-row .input-group { flex: 1; }

  /* ─── Optimize Button ─── */
  .btn-optimize {
    width: 100%;
    padding: 14px;
    background: var(--blade);
    color: var(--chalk);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
  }

  .btn-optimize:hover {
    background: var(--blade-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(231, 76, 60, 0.3);
  }

  .btn-optimize:active { transform: translateY(0); }

  .btn-optimize svg { width: 18px; height: 18px; }

  /* ─── Result Panel ─── */
  .result-panel {
    padding: 28px;
    display: flex;
    flex-direction: column;
    background: var(--sawdust);
  }

  .result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
  }

  .result-header h3 {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--steel);
  }

  .result-actions {
    display: flex;
    gap: 8px;
  }

  .btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--wood-200);
    background: var(--chalk);
    color: var(--pencil);
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 5px;
  }

  .btn-sm:hover { border-color: var(--wood-400); background: var(--wood-50); }

  /* ─── Cutting Diagram ─── */
  .diagram-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .sheet-diagram {
    background: var(--chalk);
    border: 2px solid var(--wood-300);
    border-radius: var(--radius-md);
    position: relative;
    aspect-ratio: 2 / 1;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .sheet-label {
    position: absolute;
    top: -10px;
    left: 12px;
    background: var(--wood-800);
    color: var(--chalk);
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 3px;
    letter-spacing: 0.5px;
  }

  /* Mock cut pieces */
  .piece {
    position: absolute;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    color: rgba(0,0,0,0.6);
    transition: all 0.3s ease;
    cursor: default;
    border: 1px solid rgba(0,0,0,0.08);
  }

  .piece:hover {
    filter: brightness(0.95);
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  }

  .piece-a { background: #a8d8ea; top: 2%; left: 1%; width: 48%; height: 55%; }
  .piece-b { background: #f6d186; top: 2%; left: 50%; width: 30%; height: 55%; }
  .piece-c { background: #cce5ae; top: 2%; left: 81%; width: 18%; height: 38%; }
  .piece-d { background: #f2b5a0; top: 60%; left: 1%; width: 35%; height: 38%; }
  .piece-e { background: #d4b8e0; top: 60%; left: 37%; width: 25%; height: 38%; }
  .piece-f { background: #b8d4e3; top: 60%; left: 63%; width: 18%; height: 38%; }
  .piece-waste {
    background: repeating-linear-gradient(
      45deg,
      var(--wood-100),
      var(--wood-100) 4px,
      var(--wood-200) 4px,
      var(--wood-200) 8px
    );
    top: 42%; left: 81%; width: 18%; height: 16%;
    font-size: 9px;
    color: var(--steel);
  }
  .piece-waste2 {
    background: repeating-linear-gradient(
      45deg,
      var(--wood-100),
      var(--wood-100) 4px,
      var(--wood-200) 4px,
      var(--wood-200) 8px
    );
    top: 60%; left: 82%; width: 17%; height: 38%;
    font-size: 9px;
    color: var(--steel);
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    font-family: var(--font-mono);
    font-weight: 600;
    cursor: default;
  }

  /* ─── Stats Bar ─── */
  .stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
  }

  .stat-card {
    background: var(--chalk);
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    text-align: center;
  }

  .stat-value {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 700;
    color: var(--graphite);
    line-height: 1;
    margin-bottom: 4px;
  }

  .stat-value.good { color: var(--green-ok); }
  .stat-value.warn { color: var(--amber); }

  .stat-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--steel);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  @media (max-width: 600px) {
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
  }

  /* ─── Save CTA (anon, post-result) ─── */
  .save-cta-anon {
    margin-top: 16px;
    padding: 14px 18px;
    background: linear-gradient(135deg, #fff7e6 0%, #fff0d4 100%);
    border: 1px solid #e8c98a;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
  }
  .save-cta-anon-text {
    font-size: 14px;
    color: var(--graphite);
    line-height: 1.4;
  }
  .save-cta-anon-text strong { color: var(--graphite); font-weight: 700; }
  .save-cta-anon-btn {
    background: var(--graphite);
    color: var(--chalk);
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 600;
    border: 0;
    cursor: pointer;
    white-space: nowrap;
  }
  .save-cta-anon-btn:hover { opacity: 0.88; }

  /* ═══════════════════ SOCIAL PROOF BAR ═══════════════════ */
  .proof-bar {
    max-width: 1200px;
    margin: 0 auto 60px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    opacity: 0.5;
  }

  .proof-item {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--steel);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .proof-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green-ok);
  }

  /* ═══════════════════ HOW IT WORKS ═══════════════════ */
  .section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
  }

  .section-header {
    text-align: center;
    margin-bottom: 48px;
  }

  .section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(24px, 3vw, 34px);
    font-weight: 700;
    color: var(--graphite);
    letter-spacing: -0.5px;
    margin-bottom: 10px;
  }

  .section-header p {
    font-size: 15px;
    color: var(--steel);
    max-width: 460px;
    margin: 0 auto;
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  @media (max-width: 700px) {
    .steps-grid { grid-template-columns: 1fr; }
  }

  .step-card {
    text-align: center;
    padding: 32px 24px;
  }

  .step-number {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 800;
    color: var(--wood-200);
    line-height: 1;
    margin-bottom: 16px;
  }

  .step-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--graphite);
    margin-bottom: 8px;
  }

  .step-card p {
    font-size: 14px;
    color: var(--steel);
    line-height: 1.6;
  }

  /* ═══════════════════ SAVINGS SECTION ═══════════════════ */
  .savings {
    background: var(--wood-800);
    color: var(--chalk);
    border-radius: var(--radius-lg);
    padding: 48px;
    margin: 0 24px;
    max-width: 1152px;
    margin-left: auto;
    margin-right: auto;
  }

  .savings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  @media (max-width: 700px) {
    .savings-grid { grid-template-columns: 1fr; }
    .savings { padding: 32px 24px; }
  }

  .savings h2 {
    font-family: var(--font-display);
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
    line-height: 1.2;
  }

  .savings p {
    font-size: 15px;
    opacity: 0.75;
    line-height: 1.7;
    margin-bottom: 24px;
  }

  .savings-example {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-md);
    padding: 24px;
  }

  .savings-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: 14px;
  }

  .savings-row:last-child { border-bottom: none; }

  .savings-row .label { opacity: 0.6; }
  .savings-row .val { font-family: var(--font-mono); font-weight: 600; }
  .savings-row .val.highlight { color: var(--green-ok); font-size: 18px; }

  /* ═══════════════════ TEMPLATES ═══════════════════ */
  .templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
  }

  .template-card {
    background: var(--chalk);
    border: 1.5px solid var(--wood-200);
    border-radius: var(--radius-md);
    padding: 20px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    color: inherit;
  }

  .template-card:hover {
    border-color: var(--wood-400);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }

  .template-icon {
    font-size: 28px;
    margin-bottom: 10px;
  }

  .template-card h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 4px;
  }

  .template-card p {
    font-size: 12px;
    color: var(--steel);
  }

  .template-parts {
    margin-top: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--wood-500);
  }

  /* ═══════════════════ FAQ ═══════════════════ */
  .faq-list {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .faq-item {
    border-bottom: 1px solid var(--wood-200);
  }

  .faq-q {
    width: 100%;
    padding: 18px 0;
    background: none;
    border: none;
    text-align: left;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    color: var(--graphite);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .faq-q::after {
    content: '+';
    font-size: 20px;
    font-weight: 400;
    color: var(--steel);
    transition: transform 0.2s;
  }

  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .faq-a-inner {
    padding: 0 0 18px;
    font-size: 14px;
    color: var(--steel);
    line-height: 1.7;
  }

  .faq-item.open .faq-q::after { transform: rotate(45deg); }
  .faq-item.open .faq-a { max-height: 200px; }

  /* ═══════════════════ FOOTER ═══════════════════ */
  footer {
    border-top: 1px solid var(--wood-200);
    padding: 40px 24px;
    margin-top: 40px;
  }

  .footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
  }

  .footer-copy {
    font-size: 13px;
    color: var(--steel);
  }

  .footer-links {
    display: flex;
    gap: 24px;
    list-style: none;
  }

  .footer-links a {
    font-size: 13px;
    color: var(--steel);
    text-decoration: none;
  }

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

  /* ═══════════════════ ANIMATIONS ═══════════════════ */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .hero-header { animation: fadeUp 0.6s ease both; }
  .tool { animation: fadeUp 0.6s ease 0.15s both; }
  .proof-bar { animation: fadeUp 0.6s ease 0.3s both; }

  /* ═══════════════════ TOP TOGGLES ═══════════════════ */
  .top-toggles {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
  }

  .mode-toggle, .unit-toggle {
    display: flex;
    border: 1.5px solid var(--wood-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
  }

  .mode-toggle button, .unit-toggle button {
    flex: 1;
    padding: 8px 16px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--steel);
    transition: all 0.15s;
  }

  .mode-toggle button.active, .unit-toggle button.active {
    background: var(--wood-800);
    color: var(--chalk);
  }

  .error-banner {
    background: #fef2f2;
    border: 1.5px solid #fecaca;
    color: #dc2626;
    font-size: 13px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
  }

  /* ═══════════════════ SVG DIAGRAM ═══════════════════ */
  .sheet-wrapper { width: 100%; margin-bottom: 16px; }

  .sheet-svg {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--wood-300);
  }

  .piece-rect { cursor: default; transition: filter 0.15s; }
  .piece-rect:hover { filter: brightness(0.92); }

  .piece-tooltip {
    display: none;
    position: fixed;
    z-index: 1000;
    background: var(--graphite);
    color: var(--chalk);
    font-size: 12px;
    line-height: 1.5;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    pointer-events: none;
    transform: translate(-50%, -100%);
    white-space: nowrap;
    box-shadow: var(--shadow-md);
  }

  .sheet-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 12px;
  }

  .sheet-nav-label {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--steel);
  }

  .sheet-nav button:disabled { opacity: 0.3; cursor: default; }

  .parts-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--wood-200);
  }

  .legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--pencil);
  }

  .legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    border: 1px solid rgba(0,0,0,0.08);
    flex-shrink: 0;
  }

  .bar-wrapper { margin-bottom: 16px; }
  .bar-svg { width: 100%; height: auto; border-radius: var(--radius-sm); border: 2px solid var(--wood-300); box-shadow: var(--shadow-sm); }

  .stat-value.bad { color: var(--blade); }
  .stat-value.ok { color: var(--amber); }

  /* ═══════════════════ PRINT ═══════════════════ */
  @media print {
    nav, .input-panel, .btn-optimize, .proof-bar,
    .section, .savings, footer, .hero-header,
    .result-actions, .sheet-nav, .piece-tooltip { display: none !important; }
    .result-panel { width: 100%; padding: 0; }
    .sheet-svg { width: 100%; page-break-after: always; }
    .tool-grid { grid-template-columns: 1fr !important; }
  }

  /* ═══════════════════ MOBILE ═══════════════════ */
  @media (max-width: 900px) {
    .tool-grid { grid-template-columns: 1fr; }
    .input-panel { border-right: none; border-bottom: 1px solid var(--wood-200); }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
  }

  @media (max-width: 480px) {
    .stock-inputs { grid-template-columns: 1fr; }
    .add-part-row input { font-size: 16px; }
    .input-group input, .input-group select { font-size: 16px; }
  }

  .btn-delete {
    background: none;
    border: none;
    color: var(--steel);
    cursor: pointer;
    font-size: 16px;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.15s;
  }
  .btn-delete:hover { color: var(--blade); background: var(--kerf); }

  .btn-optimize:disabled { opacity: 0.7; cursor: wait; }
  .btn-optimize svg { width: 18px; height: 18px; }

  /* ═══════════════════ PRICING ═══════════════════ */
  .pricing-wrap {
    max-width: 1080px;
    margin: 0 auto;
    padding: 40px 24px 80px;
  }
  .pricing-header {
    text-align: center;
    margin-bottom: 48px;
  }
  .pricing-header h1 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--graphite);
    letter-spacing: -0.5px;
    line-height: 1.15;
    margin: 14px 0 14px;
  }
  .pricing-header p {
    color: var(--steel);
    font-size: 16px;
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.65;
  }
  .pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 760px;
    margin: 0 auto;
  }
  .price-card {
    position: relative;
    background: var(--chalk);
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-lg);
    padding: 28px 26px 30px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
  }
  .price-card--current {
    border-color: var(--wood-500);
    box-shadow: var(--shadow-md);
  }
  .price-card--future {
    background: var(--sawdust);
    border-style: dashed;
  }
  .price-card-tag {
    position: absolute;
    top: -11px;
    left: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--wood-500);
    color: white;
  }
  .price-card-tag--soon {
    background: var(--wood-200);
    color: var(--wood-800);
  }
  .price-card h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--graphite);
    margin-bottom: 8px;
  }
  .price-card-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
  }
  .price-amount {
    font-family: var(--font-display);
    font-size: 38px;
    font-weight: 700;
    color: var(--graphite);
    line-height: 1;
  }
  .price-period {
    font-size: 13px;
    color: var(--steel);
  }
  .price-features {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
    flex: 1;
  }
  .price-features li {
    font-size: 14px;
    color: var(--pencil);
    padding: 6px 0;
    border-bottom: 1px dashed var(--wood-100);
  }
  .price-features li:last-child { border-bottom: none; }
  .price-cta {
    display: block;
    text-align: center;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: background 0.15s, transform 0.15s;
  }
  .price-cta--primary {
    background: var(--wood-700);
    color: white;
  }
  .price-cta--primary:hover {
    background: var(--wood-800);
    transform: translateY(-1px);
  }
  .price-note {
    background: var(--wood-100);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    font-size: 13px;
    color: var(--wood-800);
    line-height: 1.5;
  }
  .price-note strong { color: var(--graphite); }

  .pricing-faq {
    max-width: 680px;
    margin: 72px auto 0;
  }
  .pricing-faq h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--graphite);
    text-align: center;
    margin-bottom: 28px;
  }
  .pricing-faq-item {
    padding: 18px 0;
    border-bottom: 1px solid var(--wood-100);
  }
  .pricing-faq-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--graphite);
    margin-bottom: 6px;
  }
  .pricing-faq-item p {
    font-size: 14px;
    color: var(--pencil);
    line-height: 1.65;
  }

  /* ═══════════════════ AUTH ═══════════════════ */
  .auth-wrap {
    max-width: 420px;
    margin: 0 auto;
    padding: 48px 24px 80px;
  }
  .auth-card {
    background: var(--chalk);
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-md);
  }
  .auth-card h1 {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 700;
    color: var(--graphite);
    margin-bottom: 6px;
  }
  .auth-sub {
    font-size: 14px;
    color: var(--steel);
    margin-bottom: 22px;
  }
  .auth-flash {
    padding: 10px 12px;
    border-radius: var(--radius-md);
    font-size: 13px;
    margin-bottom: 16px;
  }
  .auth-flash--error {
    background: #fdecea;
    color: var(--blade-hover);
    border: 1px solid #f5c6c0;
  }
  .auth-flash--ok {
    background: var(--green-light);
    color: var(--green-ok);
    border: 1px solid #b9e7cc;
  }
  .auth-form { display: flex; flex-direction: column; gap: 14px; }
  .auth-form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--pencil);
  }
  .auth-form label span { color: var(--steel); font-weight: 500; }
  .auth-form input {
    padding: 10px 12px;
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: var(--sawdust);
    color: var(--graphite);
    transition: border-color 0.15s, background 0.15s;
  }
  .auth-form input:focus {
    outline: none;
    border-color: var(--wood-500);
    background: var(--chalk);
  }
  .auth-form button {
    margin-top: 6px;
  }
  .auth-alt {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px dashed var(--wood-200);
    font-size: 13px;
    color: var(--steel);
    text-align: center;
  }
  .auth-alt a { color: var(--wood-700); font-weight: 600; text-decoration: none; }
  .auth-alt a:hover { color: var(--wood-800); text-decoration: underline; }
  .auth-alt span { margin: 0 8px; color: var(--wood-300); }

  /* Nav auth state */
  .nav-user {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .nav-user-name {
    font-size: 13px;
    color: var(--pencil);
    font-weight: 500;
  }
  .nav-link-btn {
    background: none;
    border: none;
    font: inherit;
    font-size: 14px;
    color: var(--steel);
    cursor: pointer;
    padding: 0;
  }
  .nav-link-btn:hover { color: var(--graphite); }
  .nav-cta {
    background: var(--wood-700);
    color: white !important;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: background 0.15s;
  }
  .nav-cta:hover { background: var(--wood-800); }

  /* ─── Google OAuth button ─── */
  .btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    background: var(--chalk);
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-md);
    font: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--graphite);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  }
  .btn-google:hover {
    background: var(--sawdust);
    border-color: var(--wood-300);
    box-shadow: var(--shadow-sm);
  }
  /* button_to wraps in a form - kill the default form margin */
  .auth-card form[action="/auth/google_oauth2"] { margin: 0 0 4px; }

  .auth-divider {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 14px 0 10px;
    color: var(--steel);
    font-size: 12px;
    font-weight: 500;
  }
  .auth-divider::before,
  .auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--wood-200);
  }

  /* ═══════════════════ NAV USER (avatar + early access) ═══════════════════ */
  .nav-user-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--graphite);
  }
  .nav-user-link:hover .nav-user-name { color: var(--wood-700); }
  .nav-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 1px solid var(--wood-200);
    object-fit: cover;
  }
  .early-access-banner {
    background: var(--wood-100);
    color: var(--wood-800);
    font-size: 13px;
    padding: 8px 24px;
    text-align: center;
    border-bottom: 1px solid var(--wood-200);
    position: relative;
  }
  .early-access-banner a {
    color: var(--wood-700);
    font-weight: 600;
  }
  .early-access-banner .banner-close {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 0;
    color: var(--wood-700);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    padding: 4px 8px;
    opacity: 0.7;
  }
  .early-access-banner .banner-close:hover {
    opacity: 1;
  }

  /* ═══════════════════ ACTION ROW (Optimize + Save) ═══════════════════ */
  .action-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
  }
  .action-row .btn-optimize { flex: 1; }
  .btn-save {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 16px;
    background: var(--chalk);
    border: 1px solid var(--wood-300);
    border-radius: var(--radius-md);
    color: var(--wood-700);
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
  }
  .btn-save:hover {
    background: var(--wood-100);
    border-color: var(--wood-500);
    color: var(--wood-800);
  }

  /* ═══════════════════ PROJECTS LIST ═══════════════════ */
  .projects-wrap {
    max-width: 880px;
    margin: 0 auto;
    padding: 40px 24px 80px;
  }
  .projects-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
    flex-wrap: wrap;
  }
  .projects-header h1 {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--graphite);
    margin-bottom: 4px;
  }
  .projects-sub { color: var(--steel); font-size: 14px; }

  .projects-empty {
    background: var(--chalk);
    border: 2px dashed var(--wood-200);
    border-radius: var(--radius-lg);
    padding: 50px 24px;
    text-align: center;
  }
  .projects-empty h3 {
    font-family: var(--font-display);
    font-size: 20px;
    color: var(--graphite);
    margin-bottom: 6px;
  }
  .projects-empty p { color: var(--steel); font-size: 14px; }

  .projects-list { display: flex; flex-direction: column; gap: 10px; }
  .project-card {
    background: var(--chalk);
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: border-color 0.15s, box-shadow 0.15s;
  }
  .project-card:hover {
    border-color: var(--wood-400);
    box-shadow: var(--shadow-sm);
  }
  .project-card-main { flex: 1; min-width: 0; }
  .project-card-title {
    display: block;
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--graphite);
    text-decoration: none;
    margin-bottom: 4px;
  }
  .project-card-title:hover { color: var(--wood-700); }
  .project-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--steel);
    flex-wrap: wrap;
  }
  .project-tag {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.4px;
    background: var(--wood-100);
    color: var(--wood-800);
  }
  .project-tag--1d { background: #e3eef5; color: #1a4a6e; }
  .project-card-actions {
    display: flex;
    gap: 6px;
    align-items: center;
  }
  .project-card-actions form { margin: 0; }
  .btn-sm--danger { color: var(--blade); border-color: rgba(231,76,60,0.3); }
  .btn-sm--danger:hover { background: var(--kerf); color: var(--blade-hover); }
  .btn-sm--ghost { background: transparent; color: var(--steel); border-color: var(--wood-300); }
  .btn-sm--ghost:hover { background: var(--wood-50); color: var(--graphite); }

  .project-rename-view { display: flex; align-items: center; gap: 6px; }
  .project-rename-btn {
    background: transparent;
    border: 0;
    padding: 4px;
    color: var(--steel);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s;
    border-radius: 4px;
  }
  .project-rename-btn:hover { background: var(--wood-100); color: var(--wood-700); }
  .project-card:hover .project-rename-btn { opacity: 1; }
  .project-rename-edit { display: flex; gap: 6px; align-items: center; margin-bottom: 4px; }
  .project-rename-edit input {
    flex: 1;
    min-width: 0;
    padding: 6px 10px;
    font: inherit;
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    color: var(--graphite);
    border: 1px solid var(--wood-300);
    border-radius: 6px;
    background: var(--chalk);
  }
  .project-rename-edit input:focus { outline: 2px solid var(--wood-400); outline-offset: -1px; }
  .project-rename-error {
    font-size: 12px;
    color: var(--blade);
    margin: 4px 0 8px;
  }

  /* ═══════════════════ DANGER (account delete) ═══════════════════ */
  .btn-danger {
    background: var(--blade);
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
  }
  .btn-danger:hover { background: var(--blade-hover); }

  /* ═══════════════════ BLOG POST ═══════════════════ */
  .post-section { max-width: 1080px; }
  .post-back {
    display: inline-block;
    font-size: 14px;
    color: var(--steel);
    text-decoration: none;
    margin-bottom: 8px;
  }
  .post-back:hover { color: var(--graphite); }

  .post-layout {
    display: grid;
    grid-template-columns: minmax(0, 720px) 240px;
    gap: 64px;
    align-items: start;
    margin-top: 16px;
  }

  .post-toc {
    position: sticky;
    top: 100px;
    font-size: 13px;
    border-left: 2px solid var(--wood-200);
    padding-left: 20px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }
  .post-toc-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--wood-700);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 14px;
  }
  .post-toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  .post-toc li { margin: 0 0 10px; line-height: 1.45; }
  .post-toc a {
    color: var(--steel);
    text-decoration: none;
    display: block;
    padding: 2px 0;
    border-left: 2px solid transparent;
    margin-left: -22px;
    padding-left: 20px;
    transition: color 0.15s, border-color 0.15s;
  }
  .post-toc a:hover { color: var(--graphite); }
  .post-toc a.active {
    color: var(--graphite);
    border-left-color: var(--blade);
    font-weight: 600;
  }

  .post-cta {
    margin-top: 56px;
    padding: 28px 32px;
    background: var(--wood-50);
    border: 1.5px solid var(--wood-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
  }
  .post-cta-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--graphite);
    margin: 0 0 6px;
  }
  .post-cta-text {
    font-size: 14px;
    color: var(--steel);
    margin: 0 0 14px;
  }
  .post-cta-link {
    display: inline-block;
    color: var(--blade);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
    transition: border-color 0.15s;
  }
  .post-cta-link:hover { border-bottom-color: var(--blade); }

  .post-article { min-width: 0; }
  .post-date {
    display: inline-block;
    font-size: 13px;
    color: var(--steel);
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }
  .post-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--graphite);
    line-height: 1.2;
    margin: 8px 0 32px;
    letter-spacing: -0.01em;
  }

  .post-body {
    font-size: 17px;
    line-height: 1.75;
    color: var(--pencil);
  }
  .post-body p { margin: 0 0 20px; }
  .post-body strong { color: var(--graphite); font-weight: 600; }
  .post-body a {
    color: var(--blade);
    text-decoration: underline;
    text-underline-offset: 2px;
    text-decoration-thickness: 1px;
  }
  .post-body a:hover { color: var(--blade-hover); text-decoration-thickness: 2px; }

  .post-body h2 {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--graphite);
    line-height: 1.25;
    margin: 56px 0 18px;
    padding-top: 32px;
    border-top: 2px solid var(--wood-200);
    letter-spacing: -0.01em;
  }
  .post-body > h2:first-child,
  .post-body > h2:first-of-type:not(:nth-of-type(n+2)) {
    margin-top: 24px;
  }

  .post-body h3 {
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 600;
    color: var(--graphite);
    margin: 36px 0 12px;
    line-height: 1.3;
  }

  .post-body h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--wood-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 24px 0 10px;
  }

  .post-body ul, .post-body ol {
    margin: 0 0 24px;
    padding-left: 24px;
  }
  .post-body li {
    margin-bottom: 10px;
    padding-left: 4px;
  }
  .post-body li::marker { color: var(--wood-500); }
  .post-body li > ul, .post-body li > ol { margin: 10px 0 0; }

  .post-body hr {
    border: 0;
    height: 1px;
    background: var(--wood-200);
    margin: 48px 0;
  }

  .post-body blockquote {
    margin: 28px 0;
    padding: 20px 24px;
    background: var(--wood-50);
    border-left: 4px solid var(--wood-500);
    border-radius: var(--radius-sm);
    color: var(--pencil);
    font-size: 16px;
  }
  .post-body blockquote p { margin: 0 0 12px; }
  .post-body blockquote p:last-child { margin-bottom: 0; }
  .post-body blockquote strong { color: var(--graphite); }

  .post-body .callout-tldr {
    background: linear-gradient(135deg, var(--wood-50) 0%, var(--sawdust) 100%);
    border: 1.5px solid var(--wood-300);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    margin: 32px 0 40px;
    box-shadow: var(--shadow-sm);
  }
  .post-body .callout-tldr h2 {
    border-top: 0;
    padding-top: 0;
    margin: 0 0 16px;
    font-size: 20px;
  }
  .post-body .callout-tldr ul { margin-bottom: 0; }
  .post-body .callout-tldr li { margin-bottom: 12px; }
  .post-body .callout-tldr li:last-child { margin-bottom: 0; }

  .post-body .callout-verdict {
    background: var(--wood-50);
    border-left: 4px solid var(--wood-600);
    border-radius: var(--radius-sm);
    padding: 16px 22px;
    margin: 20px 0 32px;
  }
  .post-body .callout-verdict::before {
    content: "Verdict";
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--wood-700);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
  }
  .post-body .callout-verdict p { margin: 0; }

  .post-body .table-wrap {
    overflow-x: auto;
    margin: 28px 0 36px;
    border: 1px solid var(--wood-200);
    border-radius: var(--radius-md);
    background: var(--chalk);
    box-shadow: var(--shadow-sm);
  }
  .post-body table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 0;
  }
  .post-body table thead { background: var(--wood-100); }
  .post-body table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--graphite);
    border-bottom: 2px solid var(--wood-300);
    font-size: 13px;
    white-space: nowrap;
  }
  .post-body table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--wood-100);
    vertical-align: top;
    color: var(--pencil);
  }
  .post-body table tbody tr:nth-child(even) { background: var(--sawdust); }
  .post-body table tbody tr:last-child td { border-bottom: 0; }
  .post-body table tbody tr:hover { background: var(--wood-50); }
  .post-body table strong { color: var(--graphite); }

  .post-body code {
    background: var(--wood-100);
    color: var(--wood-800);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.92em;
  }
  .post-body pre {
    background: var(--graphite);
    color: var(--wood-100);
    padding: 18px 22px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 24px 0;
    font-size: 13px;
    line-height: 1.6;
  }
  .post-body pre code { background: transparent; color: inherit; padding: 0; }

  .post-body .faq-list { counter-reset: faq; margin-top: 8px; }
  .post-body .faq-list h3 {
    counter-increment: faq;
    position: relative;
    padding-left: 60px;
    margin-top: 36px;
    margin-bottom: 10px;
    min-height: 32px;
  }
  .post-body .faq-list h3::before {
    content: counter(faq, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 2px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--wood-700);
    background: var(--wood-100);
    border: 1px solid var(--wood-300);
    border-radius: var(--radius-sm);
    padding: 5px 9px;
    letter-spacing: 0.04em;
    line-height: 1;
  }
  .post-body .faq-list > p,
  .post-body .faq-list > ul,
  .post-body .faq-list > ol { padding-left: 60px; }

  @media (max-width: 1000px) {
    .post-layout { grid-template-columns: 1fr; gap: 0; }
    .post-toc { display: none; }
    .post-section { max-width: 760px; padding: 56px 20px; }
  }

  @media (max-width: 700px) {
    .post-section { padding: 32px 18px 60px; }
    .post-title { font-size: 26px; margin: 8px 0 24px; }
    .post-body { font-size: 16px; line-height: 1.7; }
    .post-body h2 { font-size: 22px; margin: 36px 0 14px; padding-top: 22px; }
    .post-body h3 { font-size: 18px; margin: 26px 0 10px; }
    .post-body p { margin: 0 0 16px; }
    .post-body ul, .post-body ol { padding-left: 22px; }
    .post-body table { font-size: 13px; }
    .post-body table th, .post-body table td { padding: 10px 12px; }
    .post-body blockquote { padding: 14px 16px; margin: 22px 0; }
    .post-body .faq-list h3 { padding-left: 44px; margin-top: 26px; }
    .post-body .faq-list h3::before { padding: 4px 7px; font-size: 11px; }
    .post-body .faq-list > p,
    .post-body .faq-list > ul,
    .post-body .faq-list > ol { padding-left: 44px; }
    .post-cta { padding: 20px; margin-top: 40px; }
    .post-cta-title { font-size: 16px; }
  }