:root {
    --paper: #f6f5f0;
    --surface: #ffffff;
    --surface-sunken: #ece9dd;
    --ink: #14201c;
    --ink-soft: #4a5a52;
    --ink-faint: #7c8b82;
    --border: #dad6c9;
    --border-strong: #c2bca8;

    --green: #143d2b;
    --green-bright: #1f6b47;
    --green-wash: #e6eee8;
    --gold: #9c7222;
    --gold-bright: #b8862e;
    --gold-wash: #f5ebd4;
    --red: #9b3a2e;
    --red-wash: #f5e6e1;

    --on-green: #f6f5f0;

    --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, "Liberation Mono", monospace;

    --shadow-sm: 0 1px 2px rgba(20, 32, 28, 0.07);
    --shadow-md: 0 12px 32px -16px rgba(20, 32, 28, 0.28);
    --shadow-lg: 0 28px 64px -24px rgba(20, 32, 28, 0.38);
    --radius: 14px;
    color-scheme: light;
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --paper: #0e1613;
      --surface: #16211c;
      --surface-sunken: #1c2921;
      --ink: #edefea;
      --ink-soft: #a9b8af;
      --ink-faint: #7e8f84;
      --border: #2a3830;
      --border-strong: #3b4c41;

      --green: #3fae79;
      --green-bright: #4fc98c;
      --green-wash: #14261d;
      --gold: #d9a84b;
      --gold-bright: #e6bd6c;
      --gold-wash: #2e2413;
      --red: #c1705f;
      --red-wash: #2e1a15;

      --on-green: #0e1613;

      --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
      --shadow-md: 0 12px 32px -16px rgba(0, 0, 0, 0.55);
      --shadow-lg: 0 28px 64px -24px rgba(0, 0, 0, 0.6);
      color-scheme: dark;
    }
  }
  :root[data-theme="dark"] {
    --paper: #0e1613;
    --surface: #16211c;
    --surface-sunken: #1c2921;
    --ink: #edefea;
    --ink-soft: #a9b8af;
    --ink-faint: #7e8f84;
    --border: #2a3830;
    --border-strong: #3b4c41;
    --green: #3fae79;
    --green-bright: #4fc98c;
    --green-wash: #14261d;
    --gold: #d9a84b;
    --gold-bright: #e6bd6c;
    --gold-wash: #2e2413;
    --red: #c1705f;
    --red-wash: #2e1a15;
    --on-green: #0e1613;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 12px 32px -16px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 28px 64px -24px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
  @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }

  img, svg { max-width: 100%; }
  a { color: inherit; }
  button { font-family: inherit; }
  .container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
  .mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

  :focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 3px; }

  /* ---------- Reveal on scroll ---------- */
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
  .reveal.in { opacity: 1; transform: none; }
  .stagger > * { transition-delay: calc(var(--i, 0) * 70ms); }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  }

  /* ---------- Header ---------- */
  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: color-mix(in oklab, var(--paper) 88%, transparent);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
  }
  .site-header.is-scrolled { border-color: var(--border); box-shadow: var(--shadow-sm); }
  .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 12px; }

  .brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
  .brand-mark {
    width: 34px; height: 34px; border-radius: 9px;
    background: var(--green); color: var(--on-green);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-mono); font-weight: 700; font-size: 15px; flex: none;
  }
  .brand-word { font-weight: 800; font-size: 17px; letter-spacing: -0.01em; color: var(--ink); white-space: nowrap; }
  .brand-word span { color: var(--green-bright); }

  .nav-links { display: flex; align-items: center; gap: 28px; }
  .nav-links a { text-decoration: none; font-size: 14px; font-weight: 600; color: var(--ink-soft); transition: color 0.15s ease; }
  .nav-links a:hover { color: var(--ink); }

  .nav-cta { display: flex; align-items: center; gap: 12px; }
  .nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; width: 40px; height: 40px; cursor: pointer; color: var(--ink); }

  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 14px; font-weight: 700; text-decoration: none;
    padding: 11px 20px; border-radius: 10px; border: 1px solid transparent;
    cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    white-space: nowrap;
  }
  .btn-primary { background: var(--green); color: var(--on-green); box-shadow: var(--shadow-sm); }
  .btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
  .btn-gold { background: var(--gold-bright); color: #1a1204; }
  .btn-gold:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
  .btn-outline { background: transparent; border-color: var(--border-strong); color: var(--ink); }
  .btn-outline:hover { border-color: var(--green); color: var(--green); }
  .btn-lg { padding: 15px 26px; font-size: 15.5px; }
  .btn .btn-short { display: none; }

  /* ---------- Hero ---------- */
  .hero { padding: 88px 0 72px; position: relative; overflow: hidden; }
  .hero::before {
    content: ""; position: absolute; inset: -20% -10% auto -10%; height: 620px;
    background: radial-gradient(60% 60% at 20% 20%, color-mix(in oklab, var(--green) 16%, transparent) 0%, transparent 70%),
                radial-gradient(50% 50% at 85% 10%, color-mix(in oklab, var(--gold) 14%, transparent) 0%, transparent 70%);
    pointer-events: none;
  }
  .hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; position: relative; }

  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
    color: var(--green-bright); background: var(--green-wash);
    border: 1px solid var(--border); padding: 7px 13px; border-radius: 100px;
  }
  .eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green-bright); }

  h1.hero-title {
    font-family: var(--font-display); font-weight: 800; letter-spacing: -0.02em;
    font-size: clamp(34px, 4.6vw, 54px); line-height: 1.06; margin: 20px 0 20px; text-wrap: balance;
  }
  h1.hero-title .underline {
    position: relative; white-space: nowrap;
  }
  h1.hero-title .underline svg { position: absolute; left: 0; bottom: -6px; width: 100%; height: 12px; }
  h1.hero-title .underline path { stroke: var(--gold-bright); stroke-width: 5; fill: none; stroke-linecap: round; stroke-dasharray: 340; stroke-dashoffset: 340; }
  h1.hero-title .underline.in path { animation: draw 1s 0.5s ease forwards; }
  @keyframes draw { to { stroke-dashoffset: 0; } }

  .hero-lead { font-size: 17.5px; color: var(--ink-soft); max-width: 46ch; margin: 0 0 30px; }
  .hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
  .hero-trust { font-size: 12.5px; color: var(--ink-faint); }
  .hero-trust strong { color: var(--ink-soft); }

  /* ---------- Hero ledger widget ---------- */
  .ledger-widget {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow-lg); overflow: hidden;
  }
  .ledger-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--border); }
  .ledger-head-title { font-size: 12.5px; font-weight: 700; color: var(--ink-soft); }
  .ledger-live { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700; color: var(--green-bright); }
  .ledger-live .pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--green-bright); animation: pulse 1.8s infinite; }
  @keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.35} }

  .ledger-body { padding: 8px; height: 300px; overflow: hidden; position: relative; }
  .ledger-row {
    display: grid; grid-template-columns: 20px 1fr auto; gap: 10px; align-items: center;
    padding: 11px 10px; border-radius: 9px; font-size: 13px;
    transform: translateY(-12px); opacity: 0;
    animation: rowIn 0.5s ease forwards;
  }
  @keyframes rowIn { to { transform: translateY(0); opacity: 1; } }
  .ledger-row .status-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
  .ledger-row.state-missed .status-dot { background: var(--red); }
  .ledger-row.state-pending .status-dot { background: var(--gold-bright); }
  .ledger-row.state-done .status-dot { background: var(--green-bright); }
  .ledger-row .r-text { color: var(--ink); font-weight: 500; }
  .ledger-row .r-time { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-faint); }
  .ledger-row.state-missed { background: var(--red-wash); }
  .ledger-row.state-pending { background: var(--gold-wash); }
  .ledger-row.state-done { background: var(--green-wash); }

  .ledger-foot { display: flex; justify-content: space-between; padding: 12px 18px; border-top: 1px solid var(--border); background: var(--surface-sunken); }
  .ledger-foot .lf-label { font-size: 11.5px; color: var(--ink-faint); }
  .ledger-foot .lf-value { font-family: var(--font-mono); font-weight: 700; font-size: 14px; color: var(--green-bright); }

  /* ---------- Stats strip ---------- */
  .stats-strip { padding: 36px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--surface); }
  .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .stat { text-align: left; }
  .stat-value { font-family: var(--font-mono); font-weight: 700; font-size: 30px; color: var(--green); letter-spacing: -0.01em; }
  .stat-label { font-size: 12.5px; color: var(--ink-soft); margin-top: 4px; }

  /* ---------- Section shell ---------- */
  .section { padding: 92px 0; }
  .section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .section-head { max-width: 62ch; margin-bottom: 48px; }
  .section-head h2 { font-family: var(--font-display); font-size: clamp(26px, 3.2vw, 36px); font-weight: 800; letter-spacing: -0.015em; margin: 14px 0 12px; }
  .section-head p { font-size: 16px; color: var(--ink-soft); }

  /* ---------- How it works ---------- */
  .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
  .steps::before { content: ""; position: absolute; top: 22px; left: 6%; right: 6%; height: 2px; background: repeating-linear-gradient(90deg, var(--border-strong) 0 8px, transparent 8px 16px); }
  .step { position: relative; padding-right: 20px; }
  .step-num {
    width: 44px; height: 44px; border-radius: 50%; background: var(--surface); border: 2px solid var(--green);
    color: var(--green); font-family: var(--font-mono); font-weight: 700; font-size: 15px;
    display: flex; align-items: center; justify-content: center; margin-bottom: 18px; position: relative; z-index: 1;
  }
  .step h3 { font-size: 15.5px; font-weight: 700; margin: 0 0 8px; }
  .step p { font-size: 13.5px; color: var(--ink-soft); margin: 0; }

  /* ---------- Solutions ---------- */
  .solutions-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .solution-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  }
  .solution-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
  .solution-card.is-flagship { border-color: color-mix(in oklab, var(--gold-bright) 45%, var(--border)); background: linear-gradient(180deg, var(--gold-wash), var(--surface) 60%); }
  .sc-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
  .sc-icon { width: 42px; height: 42px; border-radius: 11px; background: var(--green-wash); color: var(--green-bright); display: flex; align-items: center; justify-content: center; flex: none; }
  .sc-icon svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; }
  .sc-flag { font-size: 10.5px; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gold-bright); background: color-mix(in oklab, var(--gold-bright) 16%, transparent); padding: 5px 10px; border-radius: 100px; white-space: nowrap; }
  .solution-card h3 { font-size: 17px; font-weight: 700; margin: 0 0 8px; }
  .solution-card p { font-size: 14px; color: var(--ink-soft); margin: 0 0 14px; }
  .solution-card .sc-price { font-family: var(--font-mono); font-size: 13px; font-weight: 700; color: var(--ink); border-top: 1px dashed var(--border); padding-top: 12px; }
  .solution-card .sc-price small { color: var(--ink-faint); font-weight: 500; }

  /* ---------- Tax season banner ---------- */
  .banner {
    background: var(--ink); color: var(--paper); border-radius: 20px; padding: 44px 40px;
    display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
    position: relative; overflow: hidden;
  }
  .banner::after {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(60% 120% at 90% 0%, color-mix(in oklab, var(--red) 35%, transparent), transparent 70%);
  }
  .banner-content { position: relative; max-width: 60ch; }
  .banner-eyebrow { font-family: var(--font-mono); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: color-mix(in oklab, var(--red) 55%, #fff); }
  .banner h2 { font-family: var(--font-display); font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; margin: 10px 0 10px; }
  .banner p { font-size: 15px; color: color-mix(in oklab, var(--paper) 78%, transparent); margin: 0; }
  .banner-cta { position: relative; flex: none; }

  .countdown { display: flex; gap: 10px; margin-top: 18px; }
  .cd-unit { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.16); border-radius: 10px; padding: 10px 14px; text-align: center; min-width: 64px; }
  .cd-unit .cd-num { font-family: var(--font-mono); font-size: 22px; font-weight: 700; }
  .cd-unit .cd-label { font-size: 10px; color: color-mix(in oklab, var(--paper) 65%, transparent); text-transform: uppercase; letter-spacing: 0.05em; }

  /* ---------- Calculator ---------- */
  .calc-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; overflow: hidden; box-shadow: var(--shadow-md); }
  .calc-inputs { padding: 40px; }
  .calc-field { margin-bottom: 26px; }
  .calc-field:last-child { margin-bottom: 0; }
  .calc-field label { display: flex; justify-content: space-between; font-size: 13.5px; font-weight: 600; margin-bottom: 10px; }
  .calc-field label .calc-val { font-family: var(--font-mono); color: var(--green-bright); font-weight: 700; }
  .calc-field input[type="range"] {
    width: 100%; -webkit-appearance: none; appearance: none; height: 6px; border-radius: 4px;
    background: var(--surface-sunken); outline: none;
  }
  .calc-field input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
    background: var(--green); border: 3px solid var(--surface); box-shadow: var(--shadow-sm); cursor: pointer;
  }
  .calc-field input[type="range"]::-moz-range-thumb {
    width: 20px; height: 20px; border-radius: 50%; background: var(--green); border: 3px solid var(--surface); cursor: pointer;
  }
  .calc-assumption { font-size: 11.5px; color: var(--ink-faint); margin-top: 4px; }

  .calc-output { background: var(--ink); color: var(--paper); padding: 40px; display: flex; flex-direction: column; justify-content: center; }
  .calc-output-label { font-size: 12.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: color-mix(in oklab, var(--paper) 60%, transparent); }
  .calc-big { font-family: var(--font-mono); font-weight: 700; font-size: clamp(38px, 5vw, 52px); letter-spacing: -0.02em; margin: 10px 0 4px; color: var(--gold-bright); }
  .calc-sub { font-size: 13.5px; color: color-mix(in oklab, var(--paper) 72%, transparent); margin-bottom: 26px; }
  .calc-breakdown { display: flex; flex-direction: column; gap: 10px; border-top: 1px solid rgba(255,255,255,0.14); padding-top: 20px; margin-bottom: 22px; }
  .calc-breakdown div { display: flex; justify-content: space-between; font-size: 13.5px; }
  .calc-breakdown span:last-child { font-family: var(--font-mono); font-weight: 700; }
  .calc-recommend { background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.14); border-radius: 12px; padding: 16px 18px; font-size: 13.5px; line-height: 1.5; }
  .calc-recommend strong { color: var(--gold-bright); }

  /* ---------- Pricing ---------- */
  .tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .tier-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; position: relative; transition: transform 0.2s ease, box-shadow 0.2s ease; }
  .tier-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
  .tier-card.is-popular { border-color: var(--green); box-shadow: var(--shadow-md); }
  .tier-badge { position: absolute; top: -13px; left: 26px; background: var(--green); color: var(--on-green); font-size: 11px; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase; padding: 5px 12px; border-radius: 100px; }
  .tier-card h3 { font-size: 18px; font-weight: 800; margin: 4px 0 6px; }
  .tier-for { font-size: 13px; color: var(--ink-soft); margin: 0 0 20px; min-height: 36px; }
  .tier-price { font-family: var(--font-mono); font-weight: 700; font-size: 34px; letter-spacing: -0.01em; }
  .tier-price span { font-size: 14px; color: var(--ink-faint); font-weight: 500; }
  .tier-setup { font-size: 12.5px; color: var(--ink-faint); margin: 4px 0 22px; }
  .tier-card ul { list-style: none; margin: 0 0 24px; padding: 0; display: flex; flex-direction: column; gap: 11px; }
  .tier-card li { font-size: 13.5px; color: var(--ink); display: flex; gap: 9px; align-items: flex-start; }
  .tier-card li svg { width: 15px; height: 15px; stroke: var(--green-bright); stroke-width: 2.4; flex: none; margin-top: 2px; }
  .tier-note { text-align: center; font-size: 13px; color: var(--ink-faint); margin-top: 28px; }

  /* ---------- Trust ---------- */
  .trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .trust-item { text-align: center; padding: 24px 16px; }
  .trust-item svg { width: 30px; height: 30px; stroke: var(--green-bright); fill: none; stroke-width: 1.7; margin-bottom: 12px; }
  .trust-item h4 { font-size: 14px; font-weight: 700; margin: 0 0 6px; }
  .trust-item p { font-size: 12.5px; color: var(--ink-soft); margin: 0; }
  .stack-note { text-align: center; font-size: 13px; color: var(--ink-faint); margin-top: 40px; }
  .stack-note b { color: var(--ink-soft); }

  /* ---------- FAQ ---------- */
  .faq-list { max-width: 780px; }
  .faq-item { border-bottom: 1px solid var(--border); }
  .faq-item summary {
    list-style: none; cursor: pointer; padding: 20px 0; font-size: 15.5px; font-weight: 600;
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary .plus { font-family: var(--font-mono); font-size: 18px; color: var(--ink-faint); transition: transform 0.2s ease; flex: none; }
  .faq-item[open] summary .plus { transform: rotate(45deg); }
  .faq-item p { font-size: 14.5px; color: var(--ink-soft); margin: 0 0 22px; max-width: 66ch; }

  /* ---------- Final CTA ---------- */
  .final-cta { background: var(--green); color: var(--on-green); border-radius: 22px; padding: 56px 48px; text-align: center; }
  .final-cta h2 { font-family: var(--font-display); font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin: 0 0 14px; }
  .final-cta p { font-size: 15.5px; color: color-mix(in oklab, var(--on-green) 75%, transparent); max-width: 52ch; margin: 0 auto 28px; }
  .final-cta .btn-gold { padding: 15px 30px; font-size: 15.5px; }

  /* ---------- Footer ---------- */
  footer.site-footer { padding: 60px 0 32px; border-top: 1px solid var(--border); }
  .footer-grid { display: grid; grid-template-columns: 1.3fr repeat(4, 1fr); gap: 28px; margin-bottom: 40px; }
  .footer-brand p { font-size: 13px; color: var(--ink-soft); max-width: 34ch; margin: 12px 0 0; }
  .footer-col h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); margin: 0 0 14px; }
  .footer-col a { display: block; font-size: 13.5px; color: var(--ink-soft); text-decoration: none; margin-bottom: 10px; }
  .footer-col a:hover { color: var(--ink); }
  .footer-col a.footer-social { display: inline-flex; align-items: center; gap: 7px; }
  .footer-social svg { width: 15px; height: 15px; fill: currentColor; flex: none; }
  .footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--ink-faint); flex-wrap: wrap; gap: 10px; }

  /* ---------- Responsive ---------- */
  @media (max-width: 980px) {
    .hero-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
    .steps { grid-template-columns: repeat(2, 1fr); gap: 32px 20px; }
    .steps::before { display: none; }
    .solutions-grid { grid-template-columns: 1fr; }
    .tier-grid { grid-template-columns: 1fr; }
    .calc-wrap { grid-template-columns: 1fr; }
    .trust-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-links { display: none; }
    .nav-toggle { display: flex; align-items: center; justify-content: center; }
  }
  @media (max-width: 620px) {
    .hero { padding: 56px 0 48px; }
    .section { padding: 64px 0; }
    .banner { padding: 32px 24px; }
    .calc-inputs, .calc-output { padding: 26px; }
    .final-cta { padding: 40px 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .trust-grid { grid-template-columns: 1fr; }
    .hero-ctas .btn { flex: 1 1 auto; justify-content: center; }
  }
  @media (max-width: 420px) {
    .site-header .container { padding-left: 16px; padding-right: 16px; }
    .brand { gap: 7px; }
    .brand-mark { width: 28px; height: 28px; font-size: 13px; }
    .brand-word { font-size: 14px; }
    .nav-cta { gap: 8px; }
    .nav-cta .btn { padding: 10px 14px; font-size: 13px; }
    .nav-cta .btn .btn-full { display: none; }
    .nav-cta .btn .btn-short { display: inline; }
  }

  /* ===================================================================
     Guide / article pages (resources hub + individual guides)
     =================================================================== */

  .breadcrumb { font-size: 12.5px; color: var(--ink-faint); margin-bottom: 18px; }
  .breadcrumb a { color: var(--ink-faint); text-decoration: none; }
  .breadcrumb a:hover { color: var(--ink); }
  .breadcrumb .sep { margin: 0 6px; }

  .article-hero { padding: 44px 0 40px; border-bottom: 1px solid var(--border); }
  .article-hero .eyebrow { margin-bottom: 16px; }
  .article-hero h1 {
    font-family: var(--font-display); font-weight: 800; letter-spacing: -0.02em;
    font-size: clamp(28px, 3.6vw, 42px); line-height: 1.12; margin: 0 0 16px; max-width: 22ch;
  }
  .article-meta { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--ink-faint); }
  .article-meta span { display: inline-flex; align-items: center; gap: 6px; }

  .article-body { max-width: 760px; padding: 48px 0 0; }
  .article-body p { font-size: 16px; color: var(--ink); line-height: 1.7; margin: 0 0 20px; }
  .article-body h2 {
    font-family: var(--font-display); font-weight: 800; letter-spacing: -0.01em;
    font-size: 24px; margin: 44px 0 16px;
  }
  .article-body h3 { font-size: 18px; font-weight: 700; margin: 30px 0 12px; }
  .article-body ul, .article-body ol { padding-left: 22px; margin: 0 0 20px; }
  .article-body li { font-size: 15.5px; color: var(--ink); line-height: 1.65; margin-bottom: 8px; }
  .article-body a { color: var(--green-bright); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }
  .article-body strong { color: var(--ink); }

  /* Quick answer box: the direct, extractable answer up top. Human skimmers
     and AI answer engines both want this before the full explanation. */
  .quick-answer {
    background: var(--green-wash); border: 1px solid var(--border); border-left: 4px solid var(--green);
    border-radius: 10px; padding: 20px 22px; margin: 28px 0 8px;
  }
  .quick-answer .qa-label { font-family: var(--font-mono); font-size: 11px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--green-bright); margin-bottom: 8px; }
  .quick-answer p { margin: 0; font-size: 15.5px; color: var(--ink); }

  .toc { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px 24px; margin: 32px 0; }
  .toc-label { font-size: 11.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 12px; }
  .toc ol { margin: 0; padding-left: 20px; }
  .toc li { font-size: 14px; margin-bottom: 6px; }
  .toc a { color: var(--ink-soft); text-decoration: none; font-weight: 600; }
  .toc a:hover { color: var(--green-bright); }

  .compare-table-wrap { overflow-x: auto; margin: 24px 0 28px; border: 1px solid var(--border); border-radius: 12px; }
  table.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
  table.compare-table th { text-align: left; background: var(--surface-sunken); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; color: var(--ink-soft); padding: 12px 14px; border-bottom: 1px solid var(--border); }
  table.compare-table td { padding: 13px 14px; border-bottom: 1px solid var(--border); color: var(--ink); vertical-align: top; }
  table.compare-table tr:last-child td { border-bottom: none; }
  table.compare-table td.best { color: var(--green-bright); font-weight: 700; }

  .callout {
    border: 1px solid var(--border); border-radius: 12px; padding: 18px 22px; margin: 24px 0;
    background: var(--surface); border-left: 4px solid var(--gold-bright);
  }
  .callout .callout-label { font-family: var(--font-mono); font-size: 11px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--gold-bright); margin-bottom: 8px; }
  .callout p { margin: 0; font-size: 14.5px; }

  .sources { margin: 40px 0 8px; padding-top: 24px; border-top: 1px solid var(--border); }
  .sources h3 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-faint); margin: 0 0 14px; }
  .sources ol { padding-left: 20px; margin: 0; }
  .sources li { font-size: 13px; color: var(--ink-soft); margin-bottom: 8px; }
  .sources a { color: var(--ink-soft); }

  .article-cta {
    margin: 48px 0 0; padding: 32px; border-radius: 16px; background: var(--ink); color: var(--paper);
    display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  }
  .article-cta h3 { font-size: 17px; font-weight: 700; margin: 0 0 6px; }
  .article-cta p { font-size: 13.5px; color: color-mix(in oklab, var(--paper) 75%, transparent); margin: 0; max-width: 42ch; }

  .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 16px; }
  .related-card { border: 1px solid var(--border); border-radius: 12px; padding: 20px; text-decoration: none; display: block; transition: transform 0.15s ease, box-shadow 0.15s ease; }
  .related-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
  .related-tag { font-size: 10.5px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--green-bright); }
  .related-card h4 { font-size: 14.5px; font-weight: 700; color: var(--ink); margin: 8px 0 6px; }
  .related-card p { font-size: 12.5px; color: var(--ink-soft); margin: 0; }

  /* Resources hub */
  .guides-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .guide-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; text-decoration: none; display: flex; flex-direction: column; transition: transform 0.2s ease, box-shadow 0.2s ease; }
  .guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
  .guide-tag { font-size: 10.5px; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gold-bright); margin-bottom: 10px; }
  .guide-card h3 { font-size: 16.5px; font-weight: 700; color: var(--ink); margin: 0 0 10px; line-height: 1.3; }
  .guide-card p { font-size: 13.5px; color: var(--ink-soft); margin: 0; flex: 1; }
  .guide-card .guide-read { font-size: 12.5px; font-weight: 700; color: var(--green-bright); margin-top: 16px; }

  @media (max-width: 900px) {
    .related-grid { grid-template-columns: 1fr; }
    .guides-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 620px) {
    .guides-grid { grid-template-columns: 1fr; }
    .article-cta { flex-direction: column; align-items: flex-start; }
  }

  /* ===================================================================
     Site-wide micro-interactions
     =================================================================== */

  /* Buttons: press feedback + a diagonal shine sweep on hover */
  .btn {
    position: relative;
    overflow: hidden;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  }
  .btn::after {
    content: "";
    position: absolute;
    top: 0;
    left: -75%;
    width: 45%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transform: skewX(-20deg);
    transition: left 0.6s ease;
    pointer-events: none;
  }
  .btn:hover::after { left: 135%; }
  .btn-outline::after { background: linear-gradient(120deg, transparent, color-mix(in oklab, var(--green) 14%, transparent), transparent); }
  .btn:active { transform: scale(0.96) !important; box-shadow: var(--shadow-sm) !important; }
  .btn-outline:hover { transform: translateY(-1px); }

  /* Nav links: underline grows in from the left on hover */
  .nav-links a { position: relative; }
  .nav-links a::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -5px;
    height: 2px;
    background: var(--green-bright);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
  }
  .nav-links a:hover::after { transform: scaleX(1); }

  /* Logo mark: a small playful tilt on hover */
  .brand-mark { transition: transform 0.3s cubic-bezier(.34,1.56,.64,1); }
  .brand:hover .brand-mark { transform: rotate(-8deg) scale(1.06); }

  /* Card icons: nudge and re-tint when their parent card is hovered */
  .sc-icon { transition: transform 0.3s cubic-bezier(.34,1.56,.64,1), background 0.25s ease, color 0.25s ease; }
  .solution-card:hover .sc-icon { transform: scale(1.08) rotate(-4deg); background: var(--gold-wash); color: var(--gold-bright); }
  .trust-item svg { transition: transform 0.3s cubic-bezier(.34,1.56,.64,1); }
  .trust-item:hover svg { transform: scale(1.15) rotate(4deg); }
  .guide-tag, .related-tag { transition: letter-spacing 0.2s ease; }
  .guide-card:hover .guide-tag, .related-card:hover .related-tag { letter-spacing: 0.09em; }

  /* Article body links: underline draws in on hover instead of sitting static */
  .article-body a {
    text-decoration: none;
    background-image: linear-gradient(var(--green-bright), var(--green-bright));
    background-repeat: no-repeat;
    background-position: 0 100%;
    background-size: 0% 2px;
    transition: background-size 0.25s ease;
  }
  .article-body a:hover { background-size: 100% 2px; }

  /* Comparison tables: row highlight on hover */
  table.compare-table tbody tr { transition: background 0.15s ease; }
  table.compare-table tbody tr:hover { background: var(--surface-sunken); }

  /* FAQ: color shift on hover, gentle fade-in for the answer each time it opens */
  .faq-item summary { transition: color 0.15s ease; }
  .faq-item summary:hover { color: var(--green-bright); }
  @keyframes faqIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
  .faq-item[open] p { animation: faqIn 0.3s ease; }

  /* Calculator sliders: thumb grows under hover/focus/drag */
  .calc-field input[type="range"]::-webkit-slider-thumb { transition: transform 0.15s ease, box-shadow 0.15s ease; }
  .calc-field input[type="range"]:hover::-webkit-slider-thumb,
  .calc-field input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.2); }
  .calc-field input[type="range"]::-moz-range-thumb { transition: transform 0.15s ease; }
  .calc-field input[type="range"]:hover::-moz-range-thumb,
  .calc-field input[type="range"]:active::-moz-range-thumb { transform: scale(1.2); }

  /* Countdown: a brief pulse whenever a unit ticks over (class toggled from JS) */
  @keyframes cdPulse { 0% { transform: scale(1); } 45% { transform: scale(1.18); color: var(--gold-bright); } 100% { transform: scale(1); } }
  .cd-num.pulse { animation: cdPulse 0.45s ease; }

  /* Hero ledger rows: a soft highlight sweep as each new row lands */
  .ledger-row { transition: background 0.4s ease; }

  /* Breadcrumb links */
  .breadcrumb a { transition: color 0.15s ease; }

  /* Respect reduced motion everywhere, as a blanket safety net on top of the
     specific rules above (belt and suspenders: covers anything added later too) */
  @media (prefers-reduced-motion: reduce) {
    .btn::after { display: none; }
    .brand-mark, .sc-icon, .trust-item svg, .guide-tag, .related-tag,
    .cd-num, .faq-item[open] p {
      animation: none !important;
      transition: none !important;
      transform: none !important;
    }
  }

  /* ===================================================================
     Idle shine sweep on primary CTAs (runs on its own, not just on hover,
     so the main conversion buttons catch the eye without needing a hover)
     =================================================================== */

  @keyframes shimmerSweep {
    0%   { left: -75%; }
    18%  { left: 135%; }
    100% { left: 135%; }
  }
  .btn-shimmer::after { animation: shimmerSweep 3.6s ease-in-out infinite; }

  /* A slow, soft glow pulse for the cards we want to draw the eye to
     without needing interaction — the recommended plan and the flagship
     solution. Kept subtle: a breathing shadow, not a color flash. */
  @keyframes glowPulse {
    0%, 100% { box-shadow: var(--shadow-md), 0 0 0 0 color-mix(in oklab, var(--accent-glow, var(--green)) 0%, transparent); }
    50%      { box-shadow: var(--shadow-md), 0 0 24px 2px color-mix(in oklab, var(--accent-glow, var(--green)) 35%, transparent); }
  }
  .tier-card.is-popular { --accent-glow: var(--green); animation: glowPulse 4.5s ease-in-out infinite; }
  .solution-card.is-flagship { --accent-glow: var(--gold-bright); animation: glowPulse 4.5s ease-in-out infinite; animation-delay: 1.1s; }
  .tier-card.is-popular:hover, .solution-card.is-flagship:hover { animation-play-state: paused; }

  @media (prefers-reduced-motion: reduce) {
    .btn-shimmer::after { animation: none !important; }
    .tier-card.is-popular, .solution-card.is-flagship { animation: none !important; }
  }