html, body { margin: 0; padding: 0; background: var(--paper-50); color: var(--ink-900); }
  body { font-family: var(--font-sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
  *, *::before, *::after { box-sizing: border-box; }
  a { color: inherit; text-decoration: none; }
  ::selection { background: var(--accent-soft); color: var(--ink-900); }

  /* ---------- primitives ---------- */
  .wm {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 400;
    letter-spacing: -0.025em;
    color: var(--ink-900);
    display: inline-flex;
    align-items: baseline;
  }
  .wm .dot {
    display: inline-block;
    width: 6px; height: 6px;
    border-radius: 999px;
    background: var(--dawn-500);
    margin-left: 3px;
    align-self: center;
  }
  .container { max-width: 1240px; margin: 0 auto; padding: 0 56px; }

  .eyebrow {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--ink-500);
  }
  .eyebrow.on-ink { color: rgba(250,247,241,0.55); }

  .btn-primary {
    display: inline-flex; align-items: center; justify-content: center;
    font-family: var(--font-sans);
    font-size: 14px; font-weight: 500;
    color: var(--paper-50);
    background: var(--sage-700);
    border: none;
    border-radius: var(--r-3);
    padding: 14px 22px;
    cursor: pointer;
    transition: background var(--dur-2) var(--ease-out), transform var(--dur-1) var(--ease-out);
  }
  .btn-primary:hover { background: var(--sage-900); }
  .btn-primary:active { transform: translateY(1px); }
  .btn-primary.sm { font-size: 13.5px; padding: 10px 16px; }
  .btn-primary.dark { background: var(--ink-900); }
  .btn-primary.dark:hover { background: var(--ink-700); }

  .btn-ghost {
    display: inline-flex; align-items: center; justify-content: center;
    font-family: var(--font-sans);
    font-size: 14px; font-weight: 400;
    color: var(--ink-900);
    background: transparent;
    border: none;
    padding: 14px 16px;
    cursor: pointer;
    text-decoration: none;
  }
  .btn-ghost:hover { color: var(--sage-700); }

  /* focus */
  a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
    border-radius: var(--r-2);
  }

  /* ---------- nav ---------- */
  .nav {
    position: sticky; top: 0; z-index: 50;
    height: 72px;
    padding: 0 56px;
    background: rgba(250,247,241,0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ink-100);
    display: flex; align-items: center; justify-content: space-between;
  }
  .nav-left { display: flex; align-items: center; gap: 48px; }
  .nav-links { display: flex; gap: 26px; }
  .nav-link {
    font-family: var(--font-sans);
    font-size: 13.5px;
    color: var(--ink-700);
    transition: color var(--dur-2) var(--ease-out);
  }
  .nav-link:hover { color: var(--ink-900); }
  .nav-right { display: flex; align-items: center; gap: 14px; }
  .nav-signin {
    font-family: var(--font-sans);
    font-size: 13.5px;
    color: var(--ink-900);
    padding: 8px 12px;
  }
  .nav-signin:hover { color: var(--sage-700); }

  /* ---------- hero ---------- */
  .hero { position: relative; overflow: hidden; isolation: isolate; }

  /* slow rotating aurora disc — palette only: dawn, sage, dusk */
  .hero .sunset {
    position: absolute;
    inset: -420px -320px auto -320px;
    height: 1320px;
    pointer-events: none;
    z-index: 0;
    background:
      conic-gradient(from 220deg at 60% 40%,
        rgba(244,165,130,0.55)   0deg,    /* dawn-500 */
        rgba(251,212,189,0.40)  70deg,    /* dawn-300 */
        rgba(228,234,223,0.35) 140deg,    /* sage-100 */
        rgba(182,158,204,0.50) 210deg,    /* dusk-500 */
        rgba(220,207,232,0.32) 280deg,    /* dusk-300 */
        rgba(244,165,130,0.55) 360deg);
    filter: blur(90px);
    opacity: 0.90;
    transform-origin: 60% 40%;
    animation: heroSpin 80s linear infinite;
    will-change: transform;
  }

  /* drifting brand blobs — each blurs itself, no double-blur cascade */
  .hero::before,
  .hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    will-change: transform, opacity;
    filter: blur(55px);
    z-index: 0;
  }
  .hero::before {
    top: -8%; left: -10%;
    width: 560px; height: 560px;
    background: radial-gradient(closest-side,
      rgba(181,197,174,0.70),     /* sage-300 */
      rgba(181,197,174,0.22) 48%,
      rgba(181,197,174,0)    82%);
    animation: heroDriftA 36s ease-in-out infinite alternate,
               heroPulse  11s ease-in-out infinite;
  }
  .hero::after {
    top: 28%; right: -6%;
    width: 660px; height: 660px;
    background: radial-gradient(closest-side,
      rgba(182,158,204,0.60),     /* dusk-500 */
      rgba(182,158,204,0.20) 48%,
      rgba(182,158,204,0)    82%);
    animation: heroDriftB 44s ease-in-out infinite alternate,
               heroPulse  14s ease-in-out -3s infinite;
  }

  /* keeps content crisp above the FX layer */
  .hero-inner { z-index: 1; }

  @keyframes heroSpin {
    from { transform: rotate(0deg)   scale(1);    }
    50%  { transform: rotate(180deg) scale(1.04); }
    to   { transform: rotate(360deg) scale(1);    }
  }
  @keyframes heroDriftA {
    0%   { transform: translate3d(0, 0, 0)        scale(1);    }
    100% { transform: translate3d(60px, 40px, 0)  scale(1.14); }
  }
  @keyframes heroDriftB {
    0%   { transform: translate3d(0, 0, 0)        scale(1);    }
    100% { transform: translate3d(-70px,-30px, 0) scale(1.10); }
  }
  @keyframes heroPulse {
    0%, 100% { opacity: 0.85; }
    50%      { opacity: 1.00; }
  }
  @media (prefers-reduced-motion: reduce) {
    .hero .sunset,
    .hero::before,
    .hero::after { animation: none; }
  }
  .hero-inner {
    position: relative;
    padding: 112px 0 128px;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 80px;
    align-items: center;
  }
  .hero h1 {
    margin: 24px 0 0;
    font-family: var(--font-sans);
    font-size: 80px; font-weight: 400;
    line-height: 0.98; letter-spacing: -0.035em;
    color: var(--ink-900);
  }
  .hero h1 em {
    font-family: var(--font-display);
    font-style: italic; font-weight: 400;
    letter-spacing: -0.02em;
  }
  .hero .lede {
    margin: 28px 0 36px;
    max-width: 520px;
    font-family: var(--font-sans);
    font-size: 18px; line-height: 1.5;
    color: var(--ink-700);
  }
  .hero .lede em { font-family: var(--font-display); font-style: italic; }
  .hero .ctas { display: flex; align-items: center; gap: 6px; }
  .hero .note {
    margin-top: 48px;
    display: flex; align-items: center; gap: 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--ink-500);
  }
  .hero .note-dot {
    width: 6px; height: 6px; border-radius: 999px; background: var(--sage-700);
    box-shadow: 0 0 0 4px rgba(61,86,64,0.12);
  }

  .arrow {
    margin-left: 8px;
    width: 14px; height: 14px;
  }

  /* ---------- hero dashboard placeholder ---------- */
  .dash {
    position: relative;
    width: 100%;
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-4);
    box-shadow: var(--shadow-1);
    overflow: hidden;
  }
  .dash .titlebar {
    height: 36px;
    border-bottom: 1px solid var(--ink-100);
    display: flex; align-items: center; gap: 6px;
    padding: 0 14px;
    background: var(--paper-50);
  }
  .dash .titlebar .pill {
    width: 7px; height: 7px; border-radius: 999px; background: var(--ink-100);
  }
  .dash .titlebar .addr {
    margin-left: 12px;
    font-family: var(--font-mono);
    font-size: 11px; color: var(--ink-500);
  }
  .dash-body { padding: 24px; display: grid; gap: 18px; }
  .dash-head { display: flex; align-items: baseline; justify-content: space-between; }
  .dash-head .label { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-500); }
  .dash-head .cadence { font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); }

  .quarter-tile {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px 24px;
    padding: 18px 0;
    border-top: 1px solid var(--ink-100);
    border-bottom: 1px solid var(--ink-100);
    align-items: baseline;
  }
  .quarter-tile .k { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-500); grid-column: 1; }
  .quarter-tile .v {
    grid-column: 1;
    font-family: var(--font-display);
    font-style: italic; font-weight: 400;
    font-size: 44px; letter-spacing: -0.025em;
    color: var(--ink-900);
    line-height: 1;
  }
  .quarter-tile .meta {
    grid-column: 2; grid-row: 1 / span 2;
    text-align: right;
    align-self: center;
    font-family: var(--font-mono);
    font-size: 11px; color: var(--ink-500);
    display: flex; flex-direction: column; gap: 2px;
  }
  .quarter-tile .meta .due { color: var(--sage-700); }
  .quarter-tile .meta .due.warn { color: var(--clay-500); }

  .row-list { display: grid; gap: 0; }
  .row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--ink-100);
    align-items: center;
  }
  .row:last-child { border-bottom: 0; }
  .row .tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-500);
    background: var(--paper-100);
    padding: 3px 7px;
    border-radius: var(--r-1);
  }
  .row .label { font-family: var(--font-sans); font-size: 13px; color: var(--ink-900); }
  .row .label .dim { color: var(--ink-500); }
  .row .v {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: 12.5px;
    color: var(--ink-700);
  }
  .row .v.ok { color: var(--sage-700); }
  .row .v.warn { color: var(--clay-500); }

  /* ---------- pains section ---------- */
  .section { padding: 128px 0; border-top: 1px solid var(--ink-100); }
  .section h2 {
    margin: 16px 0 0;
    font-family: var(--font-sans);
    font-size: 56px; font-weight: 400; line-height: 1.04; letter-spacing: -0.03em;
    color: var(--ink-900);
  }
  .section h2 em { font-family: var(--font-display); font-style: italic; font-weight: 400; }

  .pain-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 56px; margin-top: 72px; }
  .pain-col h3 {
    margin: 16px 0 0;
    font-family: var(--font-sans);
    font-size: 19px; font-weight: 500;
    line-height: 1.3; letter-spacing: -0.01em;
    color: var(--ink-900);
  }
  .pain-col p {
    margin: 12px 0 0;
    font-family: var(--font-sans);
    font-size: 14px; line-height: 1.6; color: var(--ink-500);
  }
  .pain-col .num {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px; color: var(--ink-300);
    letter-spacing: 0.04em;
  }
  .pain-col .tags {
    margin-top: 14px;
    display: flex; flex-wrap: wrap; gap: 6px;
  }
  .pain-col .tags span {
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--ink-500);
    background: var(--paper-100);
    border: 1px solid var(--ink-100);
    padding: 3px 8px;
    border-radius: 999px;
  }

  /* ---------- speed band ---------- */
  .speed {
    background: var(--sage-900);
    color: var(--paper-50);
    padding: 96px 0;
    border-top: 1px solid rgba(250,247,241,0.08);
    border-bottom: 1px solid rgba(250,247,241,0.08);
  }
  .speed .grid {
    display: grid; grid-template-columns: 1.1fr 1fr 1fr 1fr; gap: 32px;
    align-items: end;
  }
  .speed .label-block .eyebrow { color: rgba(250,247,241,0.55); }
  .speed .h {
    margin: 14px 0 0;
    font-family: var(--font-sans);
    font-size: 36px; font-weight: 400; line-height: 1.06; letter-spacing: -0.025em;
    color: var(--paper-50);
  }
  .speed .h em { font-family: var(--font-display); font-style: italic; }
  .speed .stat .k {
    font-family: var(--font-mono);
    font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
    color: rgba(250,247,241,0.55);
  }
  .speed .stat .v {
    margin-top: 6px;
    font-family: var(--font-display);
    font-style: italic; font-weight: 400;
    font-size: 64px; line-height: 1; letter-spacing: -0.035em;
    color: var(--paper-50);
  }
  .speed .stat .d {
    margin-top: 6px;
    font-family: var(--font-mono);
    font-size: 11.5px; color: rgba(250,247,241,0.55);
  }

  /* ---------- two paths ---------- */
  .paths-grid {
    margin-top: 56px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .path-card {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-4);
    padding: 32px;
    display: flex; flex-direction: column; gap: 16px;
  }
  .path-card .head {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
  }
  .path-card .head .tag {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-500);
    background: var(--paper-100);
    padding: 4px 10px;
    border-radius: 999px;
  }
  .path-card .head .tag .d { width: 5px; height: 5px; border-radius: 999px; background: var(--sage-700); }
  .path-card .head .tag.peach .d { background: var(--dawn-500); }
  .path-card h3 {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 26px; font-weight: 500; letter-spacing: -0.02em;
    color: var(--ink-900);
  }
  .path-card h3 em { font-family: var(--font-display); font-style: italic; font-weight: 400; }
  .path-card p {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 14.5px; line-height: 1.6; color: var(--ink-700);
  }

  /* human path preview */
  .human-preview {
    background: var(--paper-50);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 18px;
    display: grid; gap: 12px;
  }
  .human-preview .h-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--ink-100);
    align-items: center;
  }
  .human-preview .h-row:last-child { border-bottom: 0; }
  .human-preview .h-label { font-family: var(--font-sans); font-size: 13px; color: var(--ink-900); }
  .human-preview .h-label .dim { color: var(--ink-500); }
  .human-preview .h-value { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 12.5px; color: var(--ink-700); }
  .human-preview .h-status {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--sage-700);
    background: var(--sage-100);
    padding: 3px 8px;
    border-radius: 999px;
  }
  .human-preview .h-status.warn { color: var(--clay-700); background: var(--clay-100); }

  /* agent path preview */
  .agent-preview {
    background: var(--ink-900);
    color: rgba(250,247,241,0.92);
    border-radius: var(--r-3);
    padding: 18px 20px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.65;
    overflow: hidden;
  }
  .agent-preview .prompt { color: var(--dawn-300); }
  .agent-preview .tool { color: rgba(250,247,241,0.55); }
  .agent-preview .out { color: rgba(250,247,241,0.92); }
  .agent-preview .num { color: var(--sage-300); }
  .agent-preview .due { color: var(--dawn-500); }
  .agent-preview .sep { color: rgba(250,247,241,0.18); padding: 6px 0; display: block; border-bottom: 1px solid rgba(250,247,241,0.08); margin-bottom: 6px; }
  .agent-preview .latency { color: rgba(250,247,241,0.45); font-style: italic; font-family: var(--font-display); }

  /* ---------- features ---------- */
  .features-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; margin-top: 56px; }
  .feature-card {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 32px 28px 24px;
    display: flex; flex-direction: column; gap: 14px;
    transition: border-color var(--dur-2) var(--ease-out);
  }
  .feature-card:hover { border-color: var(--ink-300); }
  .feature-card .ic { width: 28px; height: 28px; color: var(--ink-900); }
  .feature-card h3 {
    margin: 4px 0 0;
    font-family: var(--font-sans);
    font-size: 21px; font-weight: 500; letter-spacing: -0.015em;
    color: var(--ink-900);
  }
  .feature-card p {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 14px; line-height: 1.55; color: var(--ink-700);
  }
  .feature-card .meta {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--ink-100);
    display: flex; align-items: center; gap: 8px;
    font-family: var(--font-mono);
    font-size: 11px; color: var(--ink-500);
  }
  .feature-card .meta .d { width: 5px; height: 5px; border-radius: 999px; background: var(--sage-700); }

  /* ---------- privacy band ---------- */
  .privacy {
    background: var(--paper-100);
    border-top: 1px solid var(--ink-100);
    padding: 128px 0;
  }
  .privacy-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 80px;
    align-items: center;
  }
  .privacy h2 {
    margin: 16px 0 0;
    font-family: var(--font-sans);
    font-size: 52px; font-weight: 400; line-height: 1.04; letter-spacing: -0.03em;
    color: var(--ink-900);
  }
  .privacy h2 em { font-family: var(--font-display); font-style: italic; }
  .privacy .lede {
    margin: 24px 0 0;
    font-family: var(--font-sans);
    font-size: 17px; line-height: 1.55; color: var(--ink-700);
    max-width: 46ch;
  }
  .privacy .seal {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-4);
    padding: 32px;
  }
  .privacy .seal-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--ink-100);
    align-items: center;
  }
  .privacy .seal-row:last-child { border-bottom: 0; }
  .privacy .seal-row .ic { width: 20px; height: 20px; color: var(--ink-900); }
  .privacy .seal-row .t { font-family: var(--font-sans); font-size: 14.5px; color: var(--ink-900); }
  .privacy .seal-row .t .d { color: var(--ink-500); font-size: 12.5px; margin-top: 2px; display: block; }
  .privacy .seal-row .ck { color: var(--sage-700); }

  /* ---------- pricing ---------- */
  .pricing-wrap { display: grid; place-items: center; margin-top: 64px; }
  .pricing-card {
    width: 100%; max-width: 460px;
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-4);
    padding: 36px 36px 32px;
    box-shadow: var(--shadow-1);
  }
  .pricing-head { display: flex; align-items: center; justify-content: space-between; }
  .pricing-head .name { font-family: var(--font-mono); font-size: 12px; color: var(--ink-500); letter-spacing: 0.06em; }
  .pricing-head .tag {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-mono); font-size: 11px;
    color: var(--sage-700);
    background: var(--sage-100);
    padding: 4px 10px; border-radius: 999px;
  }
  .pricing-head .tag .d { width: 5px; height: 5px; border-radius: 999px; background: var(--sage-700); }
  .price { display: flex; align-items: baseline; gap: 8px; margin-top: 28px; }
  .price .amt {
    font-family: var(--font-display);
    font-style: italic; font-weight: 400;
    font-size: 76px; line-height: 1; letter-spacing: -0.04em;
    color: var(--ink-900);
  }
  .price .per { color: var(--ink-500); font-size: 14px; }
  .pricing-sub { margin-top: 6px; color: var(--ink-500); font-size: 14px; text-align: left; }
  .price-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 10px; }
  .price-list li {
    display: flex; align-items: flex-start; gap: 10px;
    font-size: 14.5px; color: var(--ink-900);
    text-align: left;
  }
  .price-list svg { flex: 0 0 auto; margin-top: 3px; color: var(--sage-700); }
  .pricing-card .btn-primary { width: 100%; margin-top: 28px; }
  .pricing-fineprint {
    margin: 14px 0 0; text-align: center;
    font-family: var(--font-mono); font-size: 11px; color: var(--ink-500);
  }

  /* ---------- faq ---------- */
  .faq { background: var(--paper-100); border-top: 1px solid var(--ink-100); padding: 128px 0; }
  .faq .inner { max-width: 760px; margin: 0 auto; padding: 0 56px; }
  .faq h2 { text-align: center; }
  .faq-list { margin-top: 56px; }
  details.qa { border-top: 1px solid var(--ink-100); padding: 20px 0; }
  details.qa:last-of-type { border-bottom: 1px solid var(--ink-100); }
  details.qa > summary {
    list-style: none;
    cursor: pointer;
    display: flex; align-items: flex-start; justify-content: space-between; gap: 24px;
  }
  details.qa > summary::-webkit-details-marker { display: none; }
  details.qa .q {
    font-family: var(--font-sans);
    font-size: 17px; font-weight: 500;
    color: var(--ink-900);
    line-height: 1.4;
  }
  details.qa .chev {
    width: 24px; height: 24px;
    flex: 0 0 auto;
    margin-top: 2px;
    border: 1px solid var(--ink-100);
    border-radius: 999px;
    display: grid; place-items: center;
    color: var(--ink-500);
    transition: transform var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out);
  }
  details.qa[open] .chev { transform: rotate(45deg); border-color: var(--ink-300); }
  details.qa .a {
    margin: 14px 0 0;
    max-width: 64ch;
    font-family: var(--font-sans);
    font-size: 15px; line-height: 1.6;
    color: var(--ink-700);
  }

  /* ---------- final cta ---------- */
  .final {
    position: relative;
    border-top: 1px solid var(--ink-100);
    padding: 144px 0 160px;
    text-align: center;
    overflow: hidden;
  }
  .final .sunset {
    position: absolute;
    bottom: -240px;
    left: 50%; transform: translateX(-50%);
    width: 1100px; height: 480px;
    background:
      radial-gradient(closest-side, rgba(244,165,130,0.55), rgba(244,165,130,0.18) 45%, transparent 75%);
    filter: blur(8px);
    pointer-events: none;
  }
  .final h2 {
    position: relative;
    font-family: var(--font-sans);
    font-size: 72px; font-weight: 400; line-height: 1.02; letter-spacing: -0.035em;
    color: var(--ink-900);
    margin: 0 auto;
    max-width: 18ch;
  }
  .final h2 em { font-family: var(--font-display); font-style: italic; font-weight: 400; }
  .final .lede {
    position: relative;
    margin: 24px auto 0;
    max-width: 44ch;
    font-family: var(--font-sans);
    font-size: 18px; line-height: 1.5;
    color: var(--ink-700);
  }
  .final .cta { position: relative; margin-top: 36px; display: inline-flex; }
  .final .fineprint {
    position: relative; margin-top: 18px;
    font-family: var(--font-mono); font-size: 12px; color: var(--ink-500);
  }

  /* ---------- footer ---------- */
  footer.site {
    background: var(--paper-50);
    border-top: 1px solid var(--ink-100);
    padding: 96px 0 48px;
  }
  footer.site .top {
    display: grid;
    grid-template-columns: 1.4fr 3fr;
    gap: 80px;
    padding-bottom: 64px;
  }
  footer.site .wm { font-size: 36px; }
  footer.site .tagline {
    margin-top: 12px;
    font-family: var(--font-sans);
    font-size: 15px; line-height: 1.5;
    color: var(--ink-700);
    max-width: 28ch;
  }
  footer.site .tagline em { font-family: var(--font-display); font-style: italic; }
  footer.site .cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
  footer.site .col-head {
    font-family: var(--font-sans);
    font-size: 11px; font-weight: 500;
    letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--ink-500); margin-bottom: 16px;
  }
  footer.site .col a {
    display: block; padding: 5px 0;
    font-family: var(--font-sans);
    font-size: 13.5px; color: var(--ink-900);
  }
  footer.site .col a:hover { color: var(--sage-700); }
  footer.site .bottom {
    display: flex; justify-content: space-between; gap: 24px;
    padding-top: 32px;
    border-top: 1px solid var(--ink-100);
    font-family: var(--font-mono); font-size: 11px; color: var(--ink-500);
  }

  /* ---------- responsive ---------- */
  @media (max-width: 1024px) {
    .container { padding: 0 32px; }
    .nav { padding: 0 32px; }
    .hero-inner { grid-template-columns: 1fr; gap: 56px; padding: 80px 0 96px; }
    .hero h1 { font-size: 56px; }
    .section { padding: 96px 0; }
    .section h2 { font-size: 40px; }
    .pain-grid { grid-template-columns: 1fr; gap: 32px; }
    .speed .grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .paths-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .privacy-inner { grid-template-columns: 1fr; gap: 48px; }
    .privacy h2 { font-size: 38px; }
    .final h2 { font-size: 44px; }
    footer.site .top { grid-template-columns: 1fr; gap: 48px; }
    footer.site .cols { grid-template-columns: 1fr 1fr; gap: 24px; }
    footer.site .bottom { flex-direction: column; align-items: flex-start; }
    .nav-links { display: none; }
  }

  /* ---------- demo (interactive product tour) ---------- */
  .demo { padding: 128px 0; border-top: 1px solid var(--ink-100); background: var(--paper-50); }
  .demo h2 { margin: 16px 0 0; font-family: var(--font-sans); font-size: 56px; font-weight: 400; line-height: 1.04; letter-spacing: -0.03em; color: var(--ink-900); }
  .demo h2 em { font-family: var(--font-display); font-style: italic; font-weight: 400; }
  .demo .sub { margin-top: 16px; max-width: 56ch; font-family: var(--font-sans); font-size: 17px; line-height: 1.55; color: var(--ink-700); }
  .demo .sub em { font-family: var(--font-display); font-style: italic; }

  .demo-tabs {
    margin-top: 56px;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    border-top: 1px solid var(--ink-100);
    border-bottom: 1px solid var(--ink-100);
  }
  .demo-tab {
    flex: 1 1 0;
    background: transparent;
    border: none;
    border-right: 1px solid var(--ink-100);
    padding: 22px 24px;
    display: flex; flex-direction: column; gap: 6px;
    text-align: left;
    cursor: pointer;
    position: relative;
    transition: background var(--dur-2) var(--ease-out);
  }
  .demo-tab:last-child { border-right: 0; }
  .demo-tab .t {
    font-family: var(--font-sans);
    font-size: 14px; font-weight: 500;
    color: var(--ink-700);
    letter-spacing: -0.005em;
  }
  .demo-tab .time {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-500);
    letter-spacing: 0.04em;
  }
  .demo-tab:hover { background: var(--paper-100); }
  .demo-tab.active { background: var(--paper-0); }
  .demo-tab.active .t { color: var(--ink-900); }
  .demo-tab.active::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -1px;
    height: 2px;
    background: var(--dawn-500);
  }

  .demo-panel {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-top: 0;
    border-radius: 0 0 var(--r-4) var(--r-4);
    padding: 48px;
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 56px;
    align-items: center;
    min-height: 460px;
  }
  .demo-narrative { display: flex; flex-direction: column; gap: 16px; }
  .demo-narrative .marker {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-500);
  }
  .demo-narrative h3 {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 32px; font-weight: 400;
    line-height: 1.1; letter-spacing: -0.025em;
    color: var(--ink-900);
  }
  .demo-narrative h3 em { font-family: var(--font-display); font-style: italic; }
  .demo-narrative p {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 15px; line-height: 1.6;
    color: var(--ink-700);
    max-width: 42ch;
  }
  .demo-narrative .demo-action {
    margin-top: 8px;
    display: inline-flex; align-items: center;
    font-family: var(--font-sans);
    font-size: 13.5px; font-weight: 500;
    color: var(--sage-700);
  }
  .demo-narrative .demo-action svg { margin-left: 6px; width: 12px; height: 12px; }

  .demo-screen {
    background: var(--paper-50);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 24px;
    min-height: 380px;
    display: flex; flex-direction: column;
    overflow: hidden;
  }

  /* demo scene: stack connect */
  .stack-list { display: grid; gap: 0; margin-top: 6px; }
  .stack-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--ink-100);
    align-items: center;
  }
  .stack-row:last-child { border-bottom: 0; }
  .stack-row .ic {
    width: 22px; height: 22px;
    border: 1px solid var(--ink-100);
    border-radius: var(--r-2);
    background: var(--paper-0);
    display: grid; place-items: center;
    font-family: var(--font-display);
    font-style: italic; font-size: 11px;
    color: var(--ink-700);
  }
  .stack-row .nm { font-family: var(--font-sans); font-size: 13.5px; color: var(--ink-900); }
  .stack-row .nm .dim { color: var(--ink-500); font-size: 12px; margin-left: 6px; }
  .stack-row .st {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 3px 9px;
    border-radius: 999px;
  }
  .stack-row .st.ok { color: var(--sage-700); background: var(--sage-100); }
  .stack-row .st.pending { color: var(--clay-700); background: var(--clay-100); }
  .stack-row .st.queued { color: var(--ink-500); background: var(--paper-100); border: 1px solid var(--ink-100); }
  .beckham-card {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 16px 18px;
    margin-bottom: 14px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px 16px;
    align-items: center;
  }
  .beckham-card .k { grid-column: 1; font-family: var(--font-sans); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-500); }
  .beckham-card .v { grid-column: 1; font-family: var(--font-display); font-style: italic; font-size: 32px; line-height: 1; letter-spacing: -0.025em; color: var(--ink-900); }
  .beckham-card .pill {
    grid-column: 2; grid-row: 1 / span 2;
    align-self: center;
    font-family: var(--font-mono); font-size: 11px;
    padding: 4px 10px; border-radius: 999px;
    color: var(--sage-700); background: var(--sage-100);
  }

  /* demo scene: AEAT letter */
  .letter-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    flex: 1;
    min-height: 0;
  }
  .letter-pane {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 16px;
    display: flex; flex-direction: column; gap: 10px;
    overflow: hidden;
  }
  .letter-pane.original { background: var(--paper-100); }
  .letter-pane .head {
    display: flex; align-items: center; justify-content: space-between;
    padding-bottom: 8px; border-bottom: 1px solid var(--ink-100);
  }
  .letter-pane .head .tag {
    font-family: var(--font-mono); font-size: 10px;
    letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--ink-500);
  }
  .letter-pane .head .src {
    font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-500);
  }
  .letter-pane .seal {
    width: 38px; height: 38px;
    border-radius: 999px;
    background: var(--paper-50);
    border: 1px solid var(--ink-100);
    display: grid; place-items: center;
    font-family: var(--font-display);
    font-style: italic; font-size: 13px;
    color: var(--ink-700);
  }
  .letter-pane .ref {
    font-family: var(--font-mono); font-size: 11px; color: var(--ink-500);
  }
  .letter-pane .body {
    font-family: var(--font-sans);
    font-size: 12.5px; line-height: 1.5;
    color: var(--ink-900);
    flex: 1; overflow: hidden;
  }
  .letter-pane .body.es { color: var(--ink-700); }
  .letter-pane .body strong { font-weight: 500; }
  .letter-pane .foot {
    padding-top: 8px; border-top: 1px solid var(--ink-100);
    font-family: var(--font-mono); font-size: 10.5px;
    color: var(--ink-500);
    display: flex; justify-content: space-between;
  }
  .clock-bar {
    margin-top: 14px;
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px;
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
  }
  .clock-bar .dot { width: 7px; height: 7px; border-radius: 999px; background: var(--clay-500); box-shadow: 0 0 0 4px rgba(197,137,99,0.16); }
  .clock-bar .t { font-family: var(--font-sans); font-size: 13px; color: var(--ink-900); flex: 1; }
  .clock-bar .t .dim { color: var(--ink-500); }
  .clock-bar .due { font-family: var(--font-mono); font-size: 12px; color: var(--clay-700); }

  /* demo scene: receipt */
  .receipt-split { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 18px; flex: 1; }
  .receipt-card {
    background: var(--paper-100);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 18px;
    display: flex; flex-direction: column; gap: 10px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--ink-700);
    line-height: 1.5;
    position: relative;
  }
  .receipt-card .top { display: flex; justify-content: space-between; }
  .receipt-card .name { font-family: var(--font-display); font-style: italic; font-size: 18px; color: var(--ink-900); letter-spacing: -0.015em; }
  .receipt-card .addr { color: var(--ink-500); font-size: 10.5px; }
  .receipt-card .items { display: grid; gap: 4px; border-top: 1px dashed var(--ink-300); border-bottom: 1px dashed var(--ink-300); padding: 8px 0; }
  .receipt-card .items .ln { display: flex; justify-content: space-between; }
  .receipt-card .tot { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--ink-900); }
  .receipt-card .stamp {
    position: absolute; right: 12px; bottom: 12px;
    width: 56px; height: 56px;
    border: 1.5px solid var(--clay-500);
    color: var(--clay-700);
    border-radius: 999px;
    display: grid; place-items: center;
    transform: rotate(-12deg);
    font-family: var(--font-display);
    font-style: italic; font-weight: 400;
    font-size: 11px;
    letter-spacing: -0.005em;
  }
  .receipt-analysis { display: flex; flex-direction: column; gap: 12px; }
  .receipt-analysis .row {
    display: flex; justify-content: space-between; align-items: baseline;
    padding: 10px 0;
    border-bottom: 1px solid var(--ink-100);
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--ink-900);
  }
  .receipt-analysis .row:last-child { border-bottom: 0; }
  .receipt-analysis .row .k { color: var(--ink-500); }
  .receipt-analysis .row .v.mono { font-family: var(--font-mono); font-size: 12.5px; }
  .receipt-analysis .verdict {
    margin-top: auto;
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 14px 16px;
    display: flex; align-items: center; gap: 14px;
  }
  .receipt-analysis .verdict .badge {
    font-family: var(--font-mono); font-size: 11px;
    padding: 4px 10px; border-radius: 999px;
    color: var(--sage-700); background: var(--sage-100);
  }
  .receipt-analysis .verdict .cite { font-family: var(--font-mono); font-size: 11px; color: var(--dawn-700); }
  .receipt-analysis .verdict .pct { margin-left: auto; font-family: var(--font-display); font-style: italic; font-size: 22px; color: var(--ink-900); letter-spacing: -0.015em; }

  /* demo scene: modelo 303 form */
  .modelo-form {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 22px;
    display: flex; flex-direction: column; gap: 14px;
    flex: 1;
  }
  .modelo-form .head { display: flex; justify-content: space-between; align-items: baseline; }
  .modelo-form .head .name { font-family: var(--font-display); font-style: italic; font-size: 22px; color: var(--ink-900); letter-spacing: -0.015em; }
  .modelo-form .head .ref { font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); }
  .modelo-form .lns { display: grid; gap: 0; }
  .modelo-form .lns .ln {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    padding: 11px 0;
    border-bottom: 1px solid var(--ink-100);
    align-items: baseline;
  }
  .modelo-form .lns .ln:last-child { border-bottom: 0; }
  .modelo-form .lns .num { font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); width: 32px; }
  .modelo-form .lns .label { font-family: var(--font-sans); font-size: 13px; color: var(--ink-900); }
  .modelo-form .lns .label .dim { color: var(--ink-500); display: block; font-size: 11.5px; margin-top: 2px; }
  .modelo-form .lns .v { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 13px; color: var(--ink-900); }
  .modelo-form .lns .v.minus { color: var(--clay-700); }
  .modelo-form .lns .ln.total .label { font-weight: 500; }
  .modelo-form .lns .ln.total .v { font-family: var(--font-display); font-style: italic; font-size: 22px; letter-spacing: -0.015em; }
  .modelo-form .sign {
    margin-top: 4px;
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 14px; border-top: 1px solid var(--ink-100);
    gap: 14px;
  }
  .modelo-form .sign .meta { font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); }
  .modelo-form .sign .meta .ok { color: var(--sage-700); }
  .modelo-form .sign .btn {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--font-sans);
    font-size: 12.5px; font-weight: 500;
    color: var(--paper-50);
    background: var(--sage-700);
    padding: 9px 14px;
    border-radius: var(--r-3);
  }
  .modelo-form .sign .btn .kbd {
    font-family: var(--font-mono);
    font-size: 10px;
    background: rgba(250,247,241,0.2);
    border: 1px solid rgba(250,247,241,0.25);
    padding: 1px 6px;
    border-radius: var(--r-1);
  }

  /* demo scene: annual */
  .annual-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; flex: 1; }
  .annual-card {
    background: var(--paper-0);
    border: 1px solid var(--ink-100);
    border-radius: var(--r-3);
    padding: 20px;
    display: flex; flex-direction: column; gap: 14px;
  }
  .annual-card.peach { border-color: var(--dawn-300); }
  .annual-card .head { display: flex; justify-content: space-between; align-items: baseline; }
  .annual-card .name { font-family: var(--font-display); font-style: italic; font-size: 20px; color: var(--ink-900); letter-spacing: -0.015em; }
  .annual-card .tag { font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-500); padding: 3px 8px; background: var(--paper-100); border-radius: 999px; }
  .annual-card .big {
    font-family: var(--font-display); font-style: italic;
    font-size: 40px; line-height: 1; letter-spacing: -0.03em;
    color: var(--ink-900);
  }
  .annual-card .big-sub { font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); }
  .annual-card .rows { display: grid; gap: 6px; }
  .annual-card .rows .r {
    display: flex; justify-content: space-between;
    font-family: var(--font-sans); font-size: 12.5px;
    color: var(--ink-900);
  }
  .annual-card .rows .r .v { font-family: var(--font-mono); }
  .annual-card .rows .r .dim { color: var(--ink-500); }
  .annual-card .foot {
    margin-top: auto;
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 12px; border-top: 1px solid var(--ink-100);
  }
  .annual-card .foot .status {
    font-family: var(--font-mono); font-size: 11px;
    padding: 3px 9px; border-radius: 999px;
    color: var(--sage-700); background: var(--sage-100);
  }
  .annual-card .foot .due { font-family: var(--font-mono); font-size: 11px; color: var(--ink-500); }

  @media (max-width: 1024px) {
    .demo { padding: 96px 0; }
    .demo h2 { font-size: 40px; }
    .demo-tabs { overflow-x: auto; flex-wrap: nowrap; }
    .demo-tab { flex: 0 0 200px; }
    .demo-panel { grid-template-columns: 1fr; padding: 32px; gap: 32px; }
    .receipt-split { grid-template-columns: 1fr; }
    .letter-split { grid-template-columns: 1fr; }
    .annual-grid { grid-template-columns: 1fr; }
  }