/* ============ DESIGN TOKENS ============ */
  :root {
    --bg: #f4f1ea;
    --bg-alt: #ebe6db;
    --paper: #fdfcf8;
    --ink: #1a1c1a;
    --ink-soft: #4a4e48;
    --ink-faint: #8a8e88;
    --rule: #d1ccc0;
    --rule-strong: #2a2c29;
    --accent: #b85820;
    --accent-deep: #8a3e14;
    --accent-soft: #f4ddc8;
    --highlight: #d9c97a;
    --error: #a02828;

    --serif: 'Fraunces', 'Times New Roman', serif;
    --sans: 'Inter Tight', -apple-system, sans-serif;
    --mono: 'JetBrains Mono', 'Courier New', monospace;

    --shadow-sm: 0 1px 2px rgba(26,28,26,0.06);
    --shadow: 0 4px 12px rgba(26,28,26,0.08);
    --shadow-lg: 0 12px 40px rgba(26,28,26,0.12);
  }

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

  html {
    scroll-behavior: smooth;
    overflow-x: hidden;
  }

  body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.55;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    background-image:
      radial-gradient(circle at 20% 10%, rgba(184,88,32,0.04) 0%, transparent 40%),
      radial-gradient(circle at 80% 80%, rgba(42,44,41,0.03) 0%, transparent 40%);
    overflow-x: hidden;
  }
  .skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
  }
  .skip-link:focus {
    left: 16px;
    top: 16px;
    width: auto;
    height: auto;
    z-index: 1000;
    background: var(--ink);
    color: var(--paper);
    padding: 10px 14px;
    text-decoration: none;
  }

  /* ============ HEADER ============ */
  header.site {
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
    padding: 18px 0;
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(8px);
    background: rgba(253, 252, 248, 0.92);
  }
  .container { max-width: 1080px; margin: 0 auto; padding: 0 28px; }
  .header-inner { display: flex; align-items: center; justify-content: space-between; }
  .logo {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: -0.02em;
    color: var(--ink);
    text-decoration: none;
  }
  .logo-mark {
    display: inline-block;
    width: 10px; height: 10px;
    background: var(--accent);
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
    transform: translateY(-1px);
  }
  nav.top { display: flex; gap: 28px; font-size: 14px; font-weight: 500; }
  nav.top ul,
  footer.site ul {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  nav.top li,
  footer.site li { margin: 0; }
  nav.top a { color: var(--ink-soft); text-decoration: none; transition: color .15s; }
  nav.top a:hover { color: var(--accent); }

  /* ============ HERO ============ */
  .hero {
    padding: 72px 0 48px;
    border-bottom: 1px solid var(--rule);
    position: relative;
  }
  .hero::before {
    content: 'C₂₀H₃₂N₆O₅ · NH₂ · Mw 661.7';
    position: absolute;
    top: 18px; right: 28px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
    letter-spacing: 0.05em;
  }
  .eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--accent);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .eyebrow::before {
    content: '';
    display: inline-block;
    width: 32px; height: 1px;
    background: var(--accent);
  }
  h1 {
    font-family: var(--serif);
    font-weight: 500;
    font-size: clamp(40px, 6vw, 72px);
    line-height: 1.02;
    letter-spacing: -0.025em;
    color: var(--ink);
    max-width: 14ch;
    margin-bottom: 24px;
  }
  h1 em {
    font-style: italic;
    font-weight: 400;
    color: var(--accent);
  }
  .lede {
    font-size: 19px;
    line-height: 1.5;
    color: var(--ink-soft);
    max-width: 58ch;
    margin-bottom: 0;
  }

  /* ============ TABS ============ */
  .calculator-section { padding: 48px 0 64px; }
  .tabs-wrap {
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: var(--shadow);
  }
  .tabs {
    display: flex;
    border-bottom: 1px solid var(--rule);
    background: var(--bg-alt);
  }
  .tab {
    flex: 1;
    padding: 22px 24px;
    background: none;
    border: none;
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--ink-soft);
    cursor: pointer;
    transition: all .2s;
    border-bottom: 2px solid transparent;
    position: relative;
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 14px;
  }
  .tab .num {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
    font-weight: 500;
  }
  .tab:hover { color: var(--ink); background: rgba(184,88,32,0.04); }
  .tab.active {
    color: var(--ink);
    background: var(--paper);
    border-bottom-color: var(--accent);
  }
  .tab.active .num { color: var(--accent); }

  .panel { display: none; padding: 40px 36px; }
  .panel.active { display: block; }

  /* ============ FORM ============ */
  .form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 28px;
    margin-bottom: 32px;
  }
  .field { display: flex; flex-direction: column; gap: 8px; }
  .field-full { grid-column: 1 / -1; }
  label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ink-soft);
  }
  label .hint {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-faint);
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0.02em;
    margin-left: 6px;
  }
  .input-wrap { position: relative; }
  input[type="number"], select {
    width: 100%;
    padding: 14px 16px;
    padding-right: 56px;
    background: var(--bg);
    border: 1px solid var(--rule);
    border-radius: 3px;
    font-family: var(--mono);
    font-size: 16px;
    font-weight: 500;
    color: var(--ink);
    transition: all .15s;
    -moz-appearance: textfield;
  }
  input[type="number"]::-webkit-outer-spin-button,
  input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
  input:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--paper);
    box-shadow: 0 0 0 3px rgba(184,88,32,0.12);
  }
  .unit-tag {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--ink-faint);
    letter-spacing: 0.04em;
    pointer-events: none;
  }

  select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3e%3cpath d='M1 1.5L6 6.5L11 1.5' stroke='%234a4e48' stroke-width='1.5' stroke-linecap='round'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
  }

  /* ============ RESULTS ============ */
  .results {
    background: var(--ink);
    color: var(--paper);
    border-radius: 4px;
    padding: 32px 36px;
    position: relative;
    overflow: hidden;
  }
  .results::before {
    content: 'OUTPUT';
    position: absolute;
    top: 14px; right: 18px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: rgba(244, 241, 234, 0.35);
  }
  .results-header {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--highlight);
    margin-bottom: 24px;
  }
  .result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px 40px;
  }
  .result-item { border-left: 2px solid var(--accent); padding-left: 18px; }
  .result-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(244,241,234,0.6);
    margin-bottom: 8px;
    font-weight: 500;
  }
  .result-value {
    font-family: var(--serif);
    font-size: 32px;
    font-weight: 500;
    line-height: 1.1;
    color: var(--paper);
    letter-spacing: -0.015em;
  }
  .result-value .unit {
    font-family: var(--mono);
    font-size: 14px;
    font-weight: 500;
    color: var(--highlight);
    margin-left: 6px;
    letter-spacing: 0.02em;
  }
  .result-detail {
    font-family: var(--mono);
    font-size: 12px;
    color: rgba(244,241,234,0.55);
    margin-top: 6px;
  }
  .results-empty .result-value { color: rgba(244,241,234,0.25); }
  .results-empty .result-value .unit { color: rgba(217,201,122,0.35); }

  /* ============ DISCLAIMER STRIP ============ */
  .disclaimer-strip {
    background: var(--accent-soft);
    border: 1px solid rgba(184,88,32,0.2);
    border-radius: 3px;
    padding: 14px 18px;
    margin-top: 24px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--accent-deep);
    display: flex;
    gap: 14px;
    align-items: flex-start;
  }
  .disclaimer-strip svg { flex-shrink: 0; margin-top: 2px; }
  .disclaimer-strip strong { font-weight: 600; }

  /* ============ CONTENT SECTIONS ============ */
  .content { padding: 80px 0; border-top: 1px solid var(--rule); }
  .content-inner { max-width: 720px; margin: 0 auto; }
  .site-page {
    background: var(--bg);
  }
  .page-hero {
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    padding: 72px 0 56px;
  }
  .page-hero h1 {
    max-width: 760px;
    margin-bottom: 18px;
  }
  .page-content-block {
    border-top: 0;
  }
  .page-content-block .content-inner {
    background: var(--paper);
    border: 1px solid var(--rule);
    padding: 42px;
  }
  .page-content-block a {
    color: var(--accent-deep);
    font-weight: 600;
  }

  h2 {
    font-family: var(--serif);
    font-weight: 500;
    font-size: clamp(30px, 4vw, 42px);
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-bottom: 20px;
    margin-top: 56px;
  }
  h2:first-child { margin-top: 0; }
  h3 {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 22px;
    line-height: 1.25;
    color: var(--ink);
    margin-bottom: 12px;
    margin-top: 32px;
    letter-spacing: -0.01em;
  }
  .content p {
    font-size: 17px;
    line-height: 1.65;
    color: var(--ink-soft);
    margin-bottom: 16px;
  }
  .content p strong { color: var(--ink); font-weight: 600; }
  .content ul, .content ol {
    margin: 12px 0 20px;
    padding-left: 24px;
    color: var(--ink-soft);
    font-size: 17px;
    line-height: 1.65;
  }
  .content li { margin-bottom: 8px; }

  /* Reference table */
  .ref-card {
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 4px;
    padding: 28px 32px;
    margin: 24px 0;
  }
  .ref-card h3 {
    margin-top: 0;
    font-size: 18px;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 14px;
    margin-bottom: 18px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
  }
  .ref-card h3::after {
    content: 'TABLE 01';
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--ink-faint);
    font-weight: 500;
  }
  table { width: 100%; border-collapse: collapse; font-size: 14px; }
  th {
    text-align: left;
    padding: 10px 14px 10px 0;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ink-faint);
    font-weight: 600;
    border-bottom: 1px solid var(--rule);
  }
  td {
    padding: 12px 14px 12px 0;
    border-bottom: 1px solid var(--rule);
    font-family: var(--mono);
    font-size: 13px;
    color: var(--ink-soft);
  }
  td:first-child { font-weight: 600; color: var(--ink); }
  tr:last-child td { border-bottom: none; }

  /* FAQ */
  details {
    border-bottom: 1px solid var(--rule);
    padding: 22px 0;
  }
  details:first-of-type { border-top: 1px solid var(--rule); margin-top: 24px; }
  summary {
    list-style: none;
    cursor: pointer;
    font-family: var(--serif);
    font-weight: 500;
    font-size: 19px;
    color: var(--ink);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    letter-spacing: -0.01em;
  }
  summary::-webkit-details-marker { display: none; }
  summary::after {
    content: '+';
    font-family: var(--mono);
    font-size: 24px;
    font-weight: 400;
    color: var(--accent);
    transition: transform .2s;
    flex-shrink: 0;
  }
  details[open] summary::after { content: '−'; }
  details p {
    margin-top: 14px;
    margin-bottom: 0 !important;
    font-size: 16px;
    color: var(--ink-soft);
    line-height: 1.6;
  }

  /* ============ 404 ============ */
  .error-page { min-height: 70vh; }
  .error-hero {
    padding: 72px 0 56px;
    border-bottom: 1px solid var(--rule);
    position: relative;
    overflow: hidden;
  }
  .error-hero::before {
    content: '404 · sequence not found · recalibrate path';
    position: absolute;
    top: 18px;
    right: 28px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .error-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
    align-items: center;
  }
  .error-hero h1 { max-width: 13ch; }
  .error-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    margin-top: 32px;
  }
  .error-link {
    color: var(--ink-soft);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid var(--rule-strong);
  }
  .error-link:hover {
    color: var(--accent);
    border-color: var(--accent);
  }
  .error-panel {
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 4px;
    box-shadow: var(--shadow);
    padding: 28px;
  }
  .error-panel::before {
    content: '';
    display: block;
    height: 6px;
    background: repeating-linear-gradient(90deg, var(--accent), var(--accent) 26px, var(--highlight) 26px, var(--highlight) 52px);
    border-radius: 999px;
    margin-bottom: 24px;
  }
  .error-code {
    font-family: var(--mono);
    font-size: clamp(54px, 8vw, 92px);
    line-height: 1;
    color: var(--accent);
    margin-bottom: 24px;
  }
  .error-panel__row {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 16px 0;
    border-top: 1px solid var(--rule);
    font-family: var(--mono);
    font-size: 12px;
  }
  .error-panel__row span {
    color: var(--ink-faint);
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }
  .error-panel__row strong {
    color: var(--ink);
    font-weight: 600;
    text-align: right;
  }
  .error-recovery,
  .error-recent {
    padding: 56px 0;
    border-bottom: 1px solid var(--rule);
  }
  .error-recovery__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(260px, .7fr);
    gap: 28px;
  }
  .error-search-card,
  .error-route-card {
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 4px;
    padding: 28px;
    box-shadow: var(--shadow-sm);
  }
  .error-search-card h2,
  .error-route-card h2,
  .error-section-head h2 {
    font-size: clamp(28px, 4vw, 42px);
    margin: 0 0 20px;
  }
  .error-search-card .search-form {
    display: flex;
    gap: 10px;
  }
  .error-search-card input[type="search"] {
    width: 100%;
    min-height: 48px;
    border: 1px solid var(--rule);
    background: var(--bg);
    color: var(--ink);
    padding: 0 14px;
    border-radius: 3px;
  }
  .error-search-card input[type="submit"],
  .error-search-card button {
    min-height: 48px;
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--paper);
    border-radius: 3px;
    padding: 0 18px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }
  .error-route-list {
    display: grid;
    gap: 10px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .error-route-list li { margin: 0; }
  .error-route-list a {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: var(--ink);
    text-decoration: none;
    border: 1px solid var(--rule);
    border-radius: 3px;
    padding: 14px 16px;
    background: var(--bg);
    font-weight: 600;
  }
  .error-route-list a::after {
    content: '->';
    font-family: var(--mono);
    color: var(--accent);
  }
  .error-route-list a:hover {
    border-color: var(--accent);
    background: var(--paper);
  }
  .error-section-head {
    max-width: 720px;
    margin-bottom: 32px;
  }
  .error-blog-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  /* ============ FOOTER CTA ============ */
  .cta-band {
    background: var(--ink);
    color: var(--paper);
    padding: 64px 0;
    text-align: center;
  }
  .cta-band h2 { color: var(--paper); margin-bottom: 16px; }
  .cta-band p { color: rgba(244,241,234,0.7); font-size: 18px; max-width: 50ch; margin: 0 auto 28px; }
  .cta-button {
    display: inline-block;
    padding: 16px 32px;
    background: var(--accent);
    color: var(--paper);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 3px;
    transition: all .2s;
    border: 1px solid var(--accent);
  }
  .cta-button:hover {
    background: var(--accent-deep);
    border-color: var(--accent-deep);
    transform: translateY(-1px);
  }

  footer.site {
    background: var(--bg-alt);
    border-top: 1px solid var(--rule);
    padding: 32px 0;
    font-size: 13px;
    color: var(--ink-faint);
  }
  footer.site .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
  footer.site ul { gap: 18px; }
  footer.site a { color: var(--ink-soft); text-decoration: none; }
  footer.site div:last-child {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
  }
  footer.site a:hover { color: var(--accent); }

  /* ============ RESPONSIVE ============ */
  @media (max-width: 720px) {
    .hero { padding: 48px 0 32px; }
    .hero::before { display: none; }
    .header-inner {
      align-items: flex-start;
      flex-direction: column;
      gap: 14px;
    }
    nav.top {
      display: flex;
      max-width: 100%;
      padding-bottom: 2px;
    }
    nav.top ul {
      flex-wrap: wrap;
      gap: 10px 18px;
    }
    .form-grid { grid-template-columns: 1fr; gap: 18px; }
    .result-grid { grid-template-columns: 1fr; gap: 24px; }
    .panel { padding: 28px 22px; }
    .results { padding: 24px 22px; }
    .tab { padding: 18px 16px; font-size: 13px; }
    .tab .num { display: none; }
    .ref-card { padding: 20px; }
    .content { padding: 56px 0; }
    .error-hero { padding: 48px 0 36px; }
    .error-hero::before { display: none; }
    .error-hero__grid,
    .error-recovery__grid,
    .error-blog-grid {
      grid-template-columns: 1fr;
    }
    .error-panel,
    .error-search-card,
    .error-route-card {
      padding: 22px;
    }
    .error-search-card .search-form {
      flex-direction: column;
    }
    .error-search-card input[type="submit"],
    .error-search-card button {
      width: 100%;
    }
  }

  /* Subtle entrance */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .hero > .container > * { animation: fadeUp .6s ease-out backwards; }
  .hero .eyebrow { animation-delay: .05s; }
  .hero h1 { animation-delay: .15s; }
  .hero .lede { animation-delay: .25s; }

  /* ============ BLOG ============ */
  .blog-main {
    background: var(--bg);
    color: var(--ink);
  }
  .blog-archive-hero,
  .single-hero {
    padding: 78px 0 64px;
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
  }
  .blog-archive-hero h1,
  .single-hero h1 {
    font-family: var(--serif);
    font-size: clamp(48px, 7vw, 86px);
    line-height: 1.02;
    font-weight: 600;
    letter-spacing: -0.02em;
    max-width: 850px;
    margin: 12px 0 20px;
  }
  .blog-archive-hero p,
  .blog-archive-description,
  .single-hero p {
    max-width: 680px;
    color: var(--ink-soft);
    font-size: 20px;
    line-height: 1.5;
  }
  .blog-listing {
    padding: 54px 0 80px;
  }
  .blog-listing__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    margin-bottom: 34px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--rule);
    font-family: var(--mono);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-faint);
  }
  .blog-listing__head .search-form {
    display: flex;
    gap: 8px;
    margin: 0;
  }
  .blog-search-row {
    display: flex;
    justify-content: flex-end;
    margin: -16px 0 34px;
  }
  .blog-search-row .search-form {
    display: flex;
    gap: 8px;
    margin: 0;
  }
  .blog-search-row input[type="search"] {
    min-height: 42px;
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink);
    padding: 0 12px;
    border-radius: 3px;
  }
  .blog-search-row input[type="submit"],
  .blog-search-row button {
    min-height: 42px;
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--paper);
    border-radius: 3px;
    padding: 0 16px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }
  .blog-listing__head input[type="search"] {
    min-height: 42px;
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink);
    padding: 0 12px;
    border-radius: 3px;
  }
  .blog-listing__head input[type="submit"],
  .blog-listing__head button {
    min-height: 42px;
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--paper);
    border-radius: 3px;
    padding: 0 16px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }
  .blog-filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
  }
  .blog-filter-row a {
    color: var(--ink-soft);
    text-decoration: none;
    border: 1px solid var(--rule);
    background: var(--paper);
    padding: 9px 12px;
    border-radius: 999px;
  }
  .blog-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 42px 28px;
  }
  .blog-card {
    margin: 0;
  }
  .blog-card__media {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 4 / 3;
    background:
      linear-gradient(135deg, rgba(184,88,32,0.12), rgba(217,201,122,0.18)),
      var(--paper);
    border: 1px solid var(--rule);
    color: var(--accent);
    text-decoration: none;
    overflow: hidden;
  }
  .blog-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .25s ease;
  }
  .blog-card__media span {
    font-family: var(--serif);
    font-size: 88px;
    line-height: 1;
  }
  .blog-card:hover .blog-card__media img {
    transform: scale(1.03);
  }
  .blog-card__body {
    padding-top: 16px;
  }
  .blog-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-faint);
  }
  .post-cat-name {
    background: var(--accent-soft);
    color: var(--accent-deep);
    border: 1px solid rgba(184,88,32,0.18);
    border-radius: 999px;
    padding: 5px 9px;
    text-decoration: none;
  }
  .blog-card__title {
    font-family: var(--serif);
    font-size: 28px;
    line-height: 1.08;
    font-weight: 600;
    margin: 14px 0 10px;
    letter-spacing: -0.01em;
  }
  .blog-card__title a {
    color: var(--ink);
    text-decoration: none;
  }
  .blog-card__title a:hover {
    color: var(--accent);
  }
  .blog-card p {
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.55;
    margin: 0;
  }
  .navigation.pagination {
    margin: 56px 0 0;
    font-family: var(--mono);
    font-size: 13px;
  }
  .nav-links {
    display: flex;
    gap: 8px;
    justify-content: center;
  }
  .page-numbers {
    min-width: 38px;
    min-height: 38px;
    padding: 0 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink-soft);
    text-decoration: none;
  }
  .page-numbers.current {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
  }
  .single-hero__inner {
    max-width: 890px;
    text-align: center;
  }
  .single-hero .blog-meta,
  .single-author {
    justify-content: center;
  }
  .single-author {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
    color: var(--ink-soft);
    font-size: 14px;
  }
  .single-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
  }
  .single-author a {
    color: var(--ink);
    font-weight: 600;
    text-decoration: none;
  }
  .single-featured {
    max-width: 1040px;
    padding-top: 42px;
  }
  .single-featured img {
    width: 100%;
    max-height: 560px;
    object-fit: cover;
    border: 1px solid var(--rule);
  }
  .single-featured__placeholder {
    min-height: 430px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--rule);
    background:
      linear-gradient(135deg, rgba(184,88,32,0.10), rgba(217,201,122,0.16)),
      var(--paper);
  }
  .single-featured__placeholder span {
    font-family: var(--serif);
    font-size: clamp(110px, 16vw, 190px);
    color: var(--accent);
    line-height: 1;
  }
  .single-layout {
    display: grid;
    grid-template-columns: minmax(0, 720px) 280px;
    gap: 80px;
    align-items: start;
    padding-top: 56px;
    padding-bottom: 88px;
    max-width: 1080px;
  }
  .single-aside {
    position: sticky;
    top: 104px;
    order: 2;
  }
  .single-aside__box {
    background: var(--paper);
    border: 1px solid var(--rule);
    margin-bottom: 18px;
    padding: 22px;
  }
  .single-aside__box h2,
  .single-aside__box > span {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin: 0 0 14px;
  }
  .single-aside__box strong {
    display: block;
    color: var(--ink);
    font-family: var(--serif);
    font-size: 22px;
    line-height: 1.2;
    margin-bottom: 8px;
  }
  .single-aside__box p {
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.55;
    margin: 0;
  }
  .single-aside .search-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 0;
  }
  .single-aside label,
  .single-aside input[type="search"] {
    width: 100%;
  }
  .single-aside input[type="search"] {
    border: 1px solid var(--rule);
    background: var(--bg);
    min-height: 42px;
    padding: 0 12px;
  }
  .single-aside input[type="submit"],
  .single-aside button {
    border: 1px solid var(--ink);
    background: var(--ink);
    color: var(--paper);
    min-height: 42px;
    border-radius: 3px;
    padding: 0 14px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }
  .single-aside .blog-filter-row {
    justify-content: flex-start;
  }
  .single-latest {
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .single-latest li {
    border-top: 1px solid var(--rule);
    margin: 0;
    padding: 14px 0;
  }
  .single-latest li:first-child {
    border-top: none;
    padding-top: 0;
  }
  .single-latest a {
    display: block;
    color: var(--ink);
    font-family: var(--serif);
    font-size: 18px;
    line-height: 1.2;
    text-decoration: none;
  }
  .single-latest a:hover {
    color: var(--accent);
  }
  .single-latest span {
    display: block;
    margin-top: 7px;
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-faint);
  }
  .single-content {
    color: var(--ink-soft);
    font-size: 18px;
    line-height: 1.72;
    order: 1;
  }
  .single-content > * {
    margin-bottom: 22px;
  }
  .single-content h2,
  .single-content h3,
  .single-content h4 {
    color: var(--ink);
    font-family: var(--serif);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-top: 46px;
  }
  .single-content h2 { font-size: 38px; }
  .single-content h3 { font-size: 28px; }
  .single-content a {
    color: var(--accent-deep);
  }
  .single-content blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 22px;
    color: var(--ink);
    font-family: var(--serif);
    font-size: 24px;
    line-height: 1.35;
  }
  .single-content img {
    max-width: 100%;
    height: auto;
  }
  .single-related {
    border-top: 1px solid var(--rule);
    background: var(--paper);
    padding: 64px 0 82px;
  }
  .single-related h2 {
    font-family: var(--serif);
    font-size: clamp(34px, 5vw, 54px);
    line-height: 1.05;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 0 0 34px;
    color: var(--ink);
  }
  .single-related .blog-card__title {
    font-size: 30px;
    line-height: 1.08;
    margin-top: 18px;
    margin-bottom: 8px;
  }
  .single-related .blog-card p {
    font-size: 15px;
    line-height: 1.5;
  }

  @media (max-width: 900px) {
    .blog-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .single-layout {
      grid-template-columns: 1fr;
      gap: 28px;
    }
    .single-aside {
      position: static;
    }
  }

  @media (max-width: 640px) {
    .blog-archive-hero,
    .single-hero {
      padding: 48px 0 36px;
    }
    .blog-archive-hero h1,
    .single-hero h1 {
      font-size: 44px;
    }
    .blog-listing__head {
      align-items: flex-start;
      flex-direction: column;
    }
    .blog-filter-row {
      justify-content: flex-start;
    }
    .blog-search-row {
      justify-content: flex-start;
      margin-top: -12px;
    }
    .blog-search-row .search-form {
      width: 100%;
    }
    .blog-search-row label,
    .blog-search-row input[type="search"] {
      width: 100%;
    }
    .blog-listing__head .search-form,
    .blog-listing__head label,
    .blog-listing__head input[type="search"] {
      width: 100%;
    }
    .blog-grid {
      grid-template-columns: 1fr;
    }
    .blog-card__title {
      font-size: 26px;
    }
    .single-aside {
      grid-template-columns: 1fr;
    }
    .single-content {
      font-size: 17px;
    }
    .single-content h2 {
      font-size: 30px;
    }
    .single-related .blog-card__title {
      font-size: 26px;
    }
    .single-featured__placeholder {
      min-height: 260px;
    }
  }

  /* ============ BRAND REVIEWS ============ */
  .reviews-main {
    background: var(--bg);
    color: var(--ink);
  }
  .reviews-archive-hero,
  .brand-hero {
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    padding: 70px 0;
  }
  .reviews-archive-hero h1,
  .brand-hero h1 {
    font-family: var(--serif);
    font-size: clamp(50px, 8vw, 88px);
    line-height: 1;
    margin: 10px 0 18px;
  }
  .reviews-archive-hero p,
  .brand-hero p {
    color: var(--ink-soft);
    font-size: 20px;
    line-height: 1.5;
    max-width: 680px;
  }
  .reviews-grid-section,
  .brand-body,
  .brand-reviews {
    padding: 64px 0;
  }
  .reviews-grid,
  .brand-hero__grid,
  .brand-body__grid {
    display: grid;
    gap: 36px;
    align-items: start;
  }
  .brand-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 360px);
    gap: 64px;
  }
  .brand-body__grid {
    grid-template-columns: minmax(0, 680px) 320px;
    gap: 72px;
  }
  .reviews-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .review-brand-card,
  .brand-sidebar__box,
  .customer-review,
  .leave-review {
    background: var(--paper);
    border: 1px solid var(--rule);
  }
  .review-brand-card__media,
  .brand-hero__media {
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(184,88,32,.1), rgba(217,201,122,.14)), var(--paper);
    text-decoration: none;
    overflow: hidden;
  }
  .review-brand-card__media:hover,
  .review-brand-card__media:focus,
  .brand-hero__media:hover,
  .brand-hero__media:focus {
    text-decoration: none;
  }
  .brand-hero__media {
    border: 1px solid var(--rule);
  }
  .single-brand_review .brand-hero__media {
    display: none;
  }
  .review-brand-card__media img,
  .brand-hero__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .review-brand-card__media span,
  .brand-hero__media span {
    font-family: var(--serif);
    font-size: 120px;
    color: var(--accent);
    text-decoration: none;
  }
  .review-brand-card__body {
    padding: 22px;
  }
  .review-brand-card h2 {
    font-family: var(--serif);
    font-size: 32px;
    line-height: 1.05;
    margin: 14px 0 10px;
  }
  .review-brand-card h2 a {
    color: var(--ink);
    text-decoration: none;
  }
  .review-brand-card p,
  .brand-sidebar__box p,
  .customer-review p {
    color: var(--ink-soft);
    line-height: 1.55;
  }
  .company-info {
    margin: 0;
  }
  .company-info dt {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-faint);
    text-transform: uppercase;
    letter-spacing: .12em;
    margin: 16px 0 5px;
  }
  .company-info dt:first-child {
    margin-top: 0;
  }
  .company-info dd {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.45;
  }
  .company-info a {
    color: var(--accent-deep);
  }
  .review-score,
  .brand-score-card {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
  }
  .review-score strong,
  .brand-score-card strong {
    font-family: var(--serif);
    font-size: 34px;
    line-height: 1;
  }
  .review-stars {
    color: var(--ink-faint);
    letter-spacing: 0.04em;
  }
  .review-stars .is-filled {
    color: var(--accent);
  }
  .brand-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
  }
  .brand-editorial-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 14px;
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--ink-faint);
  }
  .brand-hero__rating {
    background: var(--paper);
    border: 1px solid var(--rule);
    padding: 24px;
  }
  .brand-hero__side {
    display: grid;
    gap: 18px;
  }
  .brand-hero__rating h2 {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--ink-faint);
    margin: 0 0 16px;
  }
  .brand-hero__rating-score {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
  }
  .brand-hero__rating-score strong {
    font-family: var(--serif);
    font-size: 38px;
    line-height: 1;
  }
  .review-verify-card {
    border-top: 1px solid var(--rule);
    margin-top: 18px;
    padding-top: 18px;
  }
  .review-verify-card h3 {
    font-family: var(--serif);
    font-size: 20px;
    line-height: 1.2;
    margin: 0 0 10px;
  }
  .review-verify-card ul {
    margin: 0;
    padding-left: 18px;
    color: var(--ink-soft);
    font-size: 13px;
    line-height: 1.45;
  }
  .cta-button--light {
    background: transparent;
    color: var(--ink);
    border-color: var(--rule-strong);
  }
  .brand-content {
    color: var(--ink-soft);
    font-size: 18px;
    line-height: 1.72;
  }
  .brand-content h2,
  .brand-content h3 {
    color: var(--ink);
    font-family: var(--serif);
    line-height: 1.1;
  }
  .brand-content h2 {
    font-size: 40px;
  }
  .pros-cons {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin: 32px 0;
  }
  .pros-cons > div {
    background: var(--paper);
    border: 1px solid var(--rule);
    padding: 24px;
  }
  .brand-sidebar {
    position: sticky;
    top: 104px;
  }
  .brand-sidebar__box {
    padding: 24px;
    margin-bottom: 18px;
  }
  .brand-sidebar__box h2 {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--ink-faint);
    margin: 0 0 18px;
  }
  .rating-row {
    display: grid;
    grid-template-columns: 56px 1fr 44px;
    gap: 10px;
    align-items: center;
    margin: 11px 0;
    font-size: 13px;
  }
  .rating-row div {
    height: 8px;
    background: var(--bg-alt);
  }
  .rating-row i {
    display: block;
    height: 100%;
    background: var(--accent);
  }
  .brand-reviews {
    border-top: 1px solid var(--rule);
    background: var(--paper);
  }
  .brand-reviews__head {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: flex-start;
    margin-bottom: 30px;
  }
  .brand-reviews__head .cta-button {
    flex: 0 0 auto;
    align-self: flex-start;
    margin-top: 10px;
  }
  .brand-reviews__head h2,
  .leave-review h2 {
    font-family: var(--serif);
    font-size: clamp(34px, 5vw, 54px);
    line-height: 1.05;
    margin: 0;
  }
  .review-list {
    display: grid;
    gap: 18px;
    margin-bottom: 34px;
  }
  .review-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    border: 1px solid var(--rule);
    background: var(--bg);
    padding: 16px;
    margin-bottom: 18px;
  }
  .review-toolbar div {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
  }
  .review-toolbar strong {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--ink-faint);
    margin-right: 4px;
  }
  .review-toolbar a,
  .review-toolbar span {
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink-soft);
    border-radius: 999px;
    padding: 7px 10px;
    text-decoration: none;
    font-size: 13px;
  }
  .review-toolbar a.is-active {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
  }
  .review-trust-note {
    border: 1px solid var(--rule);
    background: var(--bg);
    padding: 20px 24px;
    margin-bottom: 22px;
  }
  .review-trust-note h3 {
    font-family: var(--serif);
    font-size: 24px;
    margin: 0 0 10px;
  }
  .review-trust-note ul {
    margin: 0;
    padding-left: 20px;
    color: var(--ink-soft);
    line-height: 1.55;
  }
  .customer-review {
    padding: 26px;
  }
  .customer-review__meta {
    display: flex;
    gap: 12px;
    align-items: center;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
    text-transform: uppercase;
    letter-spacing: .12em;
  }
  .customer-review h3 {
    font-family: var(--serif);
    font-size: 28px;
    margin: 12px 0 10px;
  }
  .leave-review {
    padding: 30px;
  }
  .leave-review__head {
    border-bottom: 1px solid var(--rule);
    margin: -4px 0 24px;
    padding-bottom: 20px;
  }
  .leave-review__head span {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent-deep);
    margin-bottom: 8px;
  }
  .leave-review__head p {
    max-width: 620px;
    margin: 12px 0 0;
    color: var(--ink-soft);
    font-size: 16px;
    line-height: 1.55;
  }
  .leave-review form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 16px;
  }
  .review-extra-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 0;
  }
  .review-extra-fields .comment-form-rating {
    grid-column: 1 / -1;
  }
  .review-extra-fields .comment-form-recommend {
    grid-column: 1 / -1;
    max-width: 520px;
  }
  .leave-review .comment-form-comment,
  .leave-review .comment-form-title,
  .leave-review .form-submit,
  .leave-review .comment-notes {
    grid-column: 1 / -1;
  }
  .leave-review input,
  .leave-review select,
  .leave-review textarea {
    width: 100%;
    border: 1px solid var(--rule);
    background: var(--bg);
    padding: 12px;
  }
  .leave-review .comment-form-cookies-consent {
    grid-column: 1 / -1;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 0;
  }
  .leave-review .comment-form-cookies-consent input {
    width: 16px;
    height: 16px;
    flex: 0 0 16px;
    margin: 3px 0 0;
    padding: 0;
  }
  .leave-review .comment-form-cookies-consent label {
    margin: 0;
    line-height: 1.45;
  }
  .leave-review textarea {
    min-height: 180px;
    resize: vertical;
  }
  .leave-review label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
  }
  .leave-review small {
    display: block;
    margin-top: 8px;
    color: var(--ink-faint);
    font-size: 12px;
  }
  .review-rating-input {
    display: flex;
    gap: 8px;
    align-items: center;
    min-height: 54px;
  }
  .review-rating-input button {
    width: 46px;
    height: 46px;
    border: 1px solid var(--rule);
    background: var(--paper);
    color: var(--ink-faint);
    border-radius: 50%;
    padding: 0;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
  }
  .review-rating-input button.is-active,
  .review-rating-input button:hover {
    color: var(--accent);
  }
  .review-rating-input button.is-active {
    border-color: rgba(184,88,32,.35);
    background: var(--accent-soft);
  }
  .review-choice-group {
    display: flex;
    gap: 10px;
  }
  .review-choice-group input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 1px;
    height: 1px;
    padding: 0;
  }
  .review-choice-group label {
    flex: 1;
    border: 1px solid var(--rule);
    background: var(--bg);
    color: var(--ink-soft);
    cursor: pointer;
    margin: 0;
    padding: 13px 16px;
    text-align: center;
  }
  .review-choice-group input:checked + label {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
  }
  .leave-review input[type="submit"] {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
    text-transform: uppercase;
    letter-spacing: .1em;
    font-size: 13px;
  }
  @media (max-width: 800px) {
    .reviews-grid,
    .brand-hero__grid,
    .brand-body__grid,
    .pros-cons,
    .leave-review form {
      grid-template-columns: 1fr;
    }
    .brand-sidebar {
      position: static;
    }
    .brand-reviews__head {
      align-items: flex-start;
      flex-direction: column;
    }
    .review-toolbar {
      align-items: flex-start;
      flex-direction: column;
    }
  }