:root {
    --bg: #121010;
    --surface: #1b1816;
    --surface-2: #252220;
    --surface-elev: #221e1b;
    --border: #302b26;
    --border-soft: #26221f;
    --ink: #f5ece0;
    --ink-soft: #c9bfb2;
    --ink-muted: #8e8578;
    --ink-faint: #5f574d;
    --blue: #7aa6ff;
    --blue-bright: #a7c3ff;
    --blue-soft: #1c2338;
    --amber: #d6a860;
    --serif: 'Fraunces', Georgia, serif;
    --sans: 'IBM Plex Sans', ui-sans-serif, system-ui, sans-serif;
    --mono: 'IBM Plex Mono', ui-monospace, monospace;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html, body { background: var(--bg); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
  body { min-height: 100vh; font-size: 15px; line-height: 1.6; }
  a { color: inherit; text-decoration: none; }
  body::before { content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: 0.04; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }

  /* ============ nav ============ */
  .nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(18,16,16,0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
  }
  .nav-inner {
    max-width: 1120px; margin: 0 auto;
    padding: 18px 32px;
    display: flex; align-items: center; justify-content: space-between;
  }
  .brand { display: inline-flex; align-items: baseline; gap: 10px; }
  .brand-mark { width: 14px; height: 14px; border: 2px solid var(--ink); border-radius: 3px; position: relative; transform: translateY(2px); }
  .brand-mark::before { content: ''; position: absolute; inset: 2px; background: var(--blue); border-radius: 1px; }
  .brand-name { font-family: var(--serif); font-weight: 500; font-size: 22px; letter-spacing: -0.015em; }
  .nav-right { display: flex; align-items: center; gap: 24px; }
  .nav-link { font-size: 13px; color: var(--ink-soft); transition: color 0.15s; }
  .nav-link:hover { color: var(--ink); }
  .nav-cta {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; background: var(--blue); color: var(--bg);
    border-radius: 6px; font-size: 13px; font-weight: 600; letter-spacing: -0.005em;
    transition: background 0.15s;
  }
  .nav-cta:hover { background: var(--blue-bright); }

  /* ============ hero ============ */
  .hero {
    position: relative; z-index: 2;
    max-width: 1120px; margin: 0 auto;
    padding: 96px 32px 80px;
    display: grid;
    grid-template-columns: 1fr 460px;
    gap: 72px;
    align-items: center;
  }
  @media (max-width: 900px) { .hero { grid-template-columns: 1fr; gap: 32px; } .hero-preview { display: none; } }
  .hero-eyebrow {
    font-family: var(--mono); font-size: 11px;
    letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--blue); margin-bottom: 24px;
  }
  .hero-eyebrow::before {
    content: ''; display: inline-block; width: 20px; height: 1px;
    background: var(--blue); vertical-align: middle; margin-right: 10px;
  }
  .hero-title {
    font-family: var(--serif);
    font-size: 64px;
    font-weight: 400;
    line-height: 1.03;
    letter-spacing: -0.025em;
    color: var(--ink);
    margin-bottom: 20px;
  }
  .hero-title em { font-style: italic; color: var(--blue); }
  .hero-lead {
    font-size: 17px;
    line-height: 1.6;
    color: var(--ink-soft);
    max-width: 44ch;
    margin-bottom: 32px;
  }
  .hero-ctas { display: flex; gap: 10px; flex-wrap: wrap; }
  .btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 20px; background: var(--blue); color: var(--bg);
    border-radius: 7px; font-weight: 600; font-size: 13.5px;
    transition: background 0.15s, transform 0.05s;
  }
  .btn-primary:hover { background: var(--blue-bright); }
  .btn-primary:active { transform: translateY(1px); }
  .btn-ghost {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 11px 20px; background: transparent; color: var(--ink-soft);
    border: 1px solid var(--border); border-radius: 7px; font-weight: 500; font-size: 13.5px;
    transition: background 0.15s, color 0.15s;
  }
  .btn-ghost:hover { background: var(--surface-2); color: var(--ink); }

  /* hero preview — miniature dashboard */
  .hero-preview {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
    box-shadow: 0 30px 60px -30px rgba(0,0,0,0.55), 0 0 0 1px rgba(122,166,255,0.06);
    font-family: var(--mono);
    font-size: 10.5px;
  }
  .hero-preview::before {
    content: '';
    position: absolute; left: 14px; top: 14px;
    width: 9px; height: 9px; border-radius: 50%; background: #d0554f;
    box-shadow: 16px 0 0 #d6a860, 32px 0 0 #66c08c;
  }
  .preview-inner {
    margin-top: 30px;
    padding: 18px 16px 20px;
  }
  .preview-eyebrow {
    font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em;
    text-transform: uppercase; color: var(--ink-faint); margin-bottom: 8px;
  }
  .preview-title {
    font-family: var(--serif); font-size: 22px;
    font-weight: 400; line-height: 1.1; letter-spacing: -0.02em;
    color: var(--ink); margin-bottom: 18px;
  }
  .preview-title em { font-style: italic; color: var(--blue); }
  .preview-item {
    display: grid; grid-template-columns: 44px 1fr auto; gap: 10px;
    padding: 10px 4px; border-top: 1px solid var(--border-soft);
  }
  .preview-item:last-child { border-bottom: 1px solid var(--border-soft); }
  .preview-item.selected {
    background: var(--surface-elev); margin: 0 -10px; padding-left: 14px; padding-right: 14px;
    border-radius: 4px; position: relative;
  }
  .preview-item.selected::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--blue);
  }
  .preview-time {
    font-size: 10px; color: var(--ink-muted); padding-top: 2px;
  }
  .preview-time strong { color: var(--ink); display: block; font-weight: 500; }
  .preview-subject {
    font-family: var(--serif); font-size: 13.5px; color: var(--ink);
    letter-spacing: -0.005em; line-height: 1.25;
  }
  .preview-meta {
    display: flex; gap: 5px; align-items: center; margin-top: 4px;
    font-family: var(--mono); font-size: 9px; color: var(--ink-muted); letter-spacing: 0.04em;
  }
  .preview-kw { background: var(--surface-2); padding: 1px 6px; border-radius: 8px; }
  .preview-kw.pri { background: var(--blue-soft); color: var(--blue); }
  .preview-right {
    font-family: var(--mono); font-size: 9.5px; color: var(--ink-faint); padding-top: 4px;
  }

  /* ============ how it works ============ */
  .how {
    position: relative; z-index: 2;
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }
  .how-inner {
    max-width: 1120px; margin: 0 auto;
    padding: 80px 32px;
  }
  .section-eyebrow {
    font-family: var(--mono); font-size: 11px;
    letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--blue); margin-bottom: 18px;
  }
  .section-title {
    font-family: var(--serif); font-size: 40px;
    font-weight: 400; letter-spacing: -0.02em; line-height: 1.1;
    margin-bottom: 50px;
    max-width: 20ch;
  }
  .section-title em { font-style: italic; color: var(--blue); }
  .steps {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
  }
  @media (max-width: 900px) { .steps { grid-template-columns: 1fr; gap: 28px; } }
  .step {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px 24px;
    position: relative;
  }
  .step-num {
    font-family: var(--serif); font-style: italic;
    font-size: 40px;
    color: var(--blue);
    line-height: 1;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
  }
  .step-title {
    font-family: var(--serif); font-size: 22px; font-weight: 500;
    letter-spacing: -0.015em; margin-bottom: 10px;
  }
  .step-body {
    font-size: 14px; color: var(--ink-soft); line-height: 1.6;
  }
  .step-body code { font-family: var(--mono); font-size: 12.5px; color: var(--blue-bright); background: var(--surface-2); padding: 1px 5px; border-radius: 3px; }

  /* ============ sources grid ============ */
  .sources {
    position: relative; z-index: 2;
    max-width: 1120px; margin: 0 auto;
    padding: 80px 32px;
  }
  .sources-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
    margin-top: 40px;
  }
  @media (max-width: 900px) { .sources-grid { grid-template-columns: 1fr; } }
  .source-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px;
    display: flex; flex-direction: column; gap: 10px;
    position: relative;
  }
  .source-card.coming {
    opacity: 0.55;
    background: transparent;
    border-style: dashed;
  }
  .source-head {
    display: flex; align-items: center; gap: 12px;
  }
  .source-dot { width: 10px; height: 10px; border-radius: 50%; }
  .source-dot.limitless { background: var(--amber); }
  .source-dot.granola { background: var(--blue); }
  .source-dot.future { background: var(--ink-faint); }
  .source-name {
    font-family: var(--serif); font-size: 22px;
    letter-spacing: -0.015em; font-weight: 500; color: var(--ink);
  }
  .source-status {
    font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--blue); margin-left: auto;
  }
  .source-status.soon { color: var(--ink-faint); }
  .source-body {
    font-size: 13.5px; color: var(--ink-soft); line-height: 1.55;
  }

  /* ============ code demo block ============ */
  .demo {
    position: relative; z-index: 2;
    background: var(--surface);
    border-top: 1px solid var(--border);
  }
  .demo-inner {
    max-width: 1120px; margin: 0 auto;
    padding: 80px 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }
  @media (max-width: 900px) { .demo-inner { grid-template-columns: 1fr; } }
  .demo-text .section-title { font-size: 34px; margin-bottom: 18px; }
  .demo-text p { font-size: 15px; color: var(--ink-soft); line-height: 1.65; margin-bottom: 14px; max-width: 44ch; }
  .codeblock {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 22px;
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.65;
    color: var(--ink-soft);
    position: relative;
    overflow-x: auto;
  }
  .codeblock::before {
    content: 'Claude';
    position: absolute; top: 12px; right: 14px;
    font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--ink-faint);
  }
  .codeblock .u { color: var(--blue-bright); font-weight: 500; }
  .codeblock .c { color: var(--ink-muted); font-style: italic; }
  .codeblock .kw { color: var(--amber); }

  /* ============ final cta ============ */
  .final {
    position: relative; z-index: 2;
    max-width: 1120px; margin: 0 auto;
    padding: 100px 32px;
    text-align: center;
  }
  .final-title {
    font-family: var(--serif); font-size: 56px;
    font-weight: 400; letter-spacing: -0.025em; line-height: 1.05;
    margin-bottom: 16px;
  }
  .final-title em { font-style: italic; color: var(--blue); }
  .final-sub {
    font-size: 16px; color: var(--ink-muted); margin-bottom: 32px;
  }
  .final-cta {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 28px; background: var(--blue); color: var(--bg);
    border-radius: 8px; font-weight: 600; font-size: 14.5px; letter-spacing: -0.005em;
  }
  .final-cta:hover { background: var(--blue-bright); }

  /* ============ footer ============ */
  footer {
    border-top: 1px solid var(--border);
    padding: 32px;
    text-align: center;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }
  footer span em { font-style: italic; text-transform: none; letter-spacing: 0; color: var(--ink-muted); }

/* =========================================================
   Mobile — landing page.
   At <760px: horizontal nav links collapse into a hamburger
   that reveals them as a vertical dropdown panel.
   ========================================================= */

.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--ink);
  cursor: pointer;
}

/* Dropdown is hidden by default at all widths. The media query below
   re-enables it as a drawer at narrow widths when body.nav-open is set. */
.nav-dropdown {
  display: none;
}

@media (max-width: 760px) {
  .nav-inner { padding: 14px 20px; }

  /* Hide the horizontal link row; show the hamburger instead */
  .nav-right {
    display: none;
  }
  .nav-hamburger {
    display: inline-flex;
  }

  /* Position and style the drawer panel (still display:none until opened) */
  .nav-dropdown {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px 18px;
    flex-direction: column;
    gap: 4px;
  }
  body.nav-open .nav-dropdown {
    display: flex;
  }
  .nav-dropdown a {
    padding: 10px 4px;
    font-size: 15px;
    color: var(--ink-soft);
    border-bottom: 1px solid var(--border-soft);
  }
  .nav-dropdown a:last-child { border-bottom: none; }
  .nav-dropdown a.nav-cta {
    margin-top: 10px;
    background: var(--blue);
    color: var(--bg);
    font-weight: 600;
    border-radius: 6px;
    text-align: center;
    padding: 12px 0;
    border-bottom: none;
  }

  /* Hero — tighter padding, smaller title */
  .hero {
    padding: 56px 20px 48px;
    gap: 32px;
  }
  .hero-title {
    font-size: 42px !important;
    line-height: 1.05 !important;
  }
  .hero-lead { font-size: 15px; }
  .hero-preview { display: none; }

  /* Section titles shrink */
  .section-title {
    font-size: 30px !important;
  }

  /* How it works — tighter cards */
  .how-inner, .sources, .demo-inner, .final {
    padding-left: 20px; padding-right: 20px;
  }
  .how-inner { padding-top: 60px; padding-bottom: 60px; }
  .sources { padding-top: 60px; padding-bottom: 60px; }
  .demo-inner { padding-top: 60px; padding-bottom: 60px; }
  .final { padding-top: 70px; padding-bottom: 70px; }

  .final-title {
    font-size: 40px !important;
    line-height: 1.08 !important;
  }

  /* Code demo block — horizontal scroll for long lines */
  .codeblock { font-size: 12px; padding: 16px 18px; }

  /* Source cards — give the status badge room */
  .source-head { flex-wrap: wrap; }
}

@media (max-width: 420px) {
  .hero-title { font-size: 36px !important; }
  .final-title { font-size: 32px !important; }
  .section-title { font-size: 26px !important; }
}