:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --success: #1f8a65;
  --error: #cf2d56;
  --tl-thinking: #dfa88f;
  --tl-grep: #9fc9a2;
  --tl-read: #9fbbe0;
  --tl-edit: #c0a8dd;
  --tl-done: #c08532;
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-pill: 9999px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--body);
  font-family: "Inter", system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.15px;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 400;
  margin: 0 0 16px;
}

h1 { font-size: 60px; line-height: 1.1; letter-spacing: -1.8px; }
h2 { font-size: 36px; line-height: 1.2; letter-spacing: -0.72px; }
h3 { font-size: 26px; line-height: 1.25; letter-spacing: -0.33px; }
h4 { font-size: 18px; font-weight: 600; letter-spacing: 0; }

p { margin: 0 0 16px; }

a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.section { padding: 80px 0; }
.section-tight { padding: 56px 0; }

.label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 16px;
}

.badge-pill {
  display: inline-block;
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  border-radius: var(--r-pill);
  padding: 4px 10px;
}

/* Top nav */
.top-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 600; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px; height: 26px;
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--r-md);
  font-size: 16px;
  line-height: 1;
}
.brand-word { font-size: 17px; letter-spacing: -0.3px; }
.nav-menu { display: flex; align-items: center; gap: 24px; }
.nav-menu a { font-size: 14px; font-weight: 500; color: var(--ink); }
.nav-cta {
  background: var(--primary);
  color: var(--on-primary) !important;
  padding: 9px 16px;
  border-radius: var(--r-md);
  font-weight: 500;
}
.nav-cta:hover { background: var(--primary-active); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--r-md);
  cursor: pointer;
  border: 1px solid transparent;
  padding: 11px 18px;
  transition: background .15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-active); }
.btn-secondary { background: var(--surface-card); color: var(--ink); border-color: var(--hairline-strong); }
.btn-dark { background: var(--ink); color: var(--canvas); padding: 12px 20px; }

/* Hero */
.hero { background: var(--canvas); padding: 88px 0 64px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero h1 { margin-bottom: 20px; }
.hero-lead { font-size: 18px; color: var(--body); max-width: 46ch; }
.hero-actions { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.hero-figure {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.hero-figure img { width: 100%; height: 360px; object-fit: cover; }
.figure-caption {
  font-size: 13px;
  color: var(--muted);
  padding: 12px 16px;
  border-top: 1px solid var(--hairline);
}

/* Ledger mockup */
.ledger {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 20px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  color: var(--body);
}
.ledger-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--hairline-soft);
}
.ledger-row:last-child { border-bottom: 0; }
.ledger-row.total { color: var(--ink); font-weight: 400; border-top: 1px solid var(--hairline-strong); margin-top: 4px; }
.ledger-amount { color: var(--ink); }

/* Generic grid */
.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 24px;
}
.card h3 { font-size: 22px; letter-spacing: -0.11px; }
.card h4 { margin-bottom: 8px; }
.card p { margin-bottom: 0; }
.card-num {
  display: inline-flex;
  width: 28px; height: 28px;
  align-items: center; justify-content: center;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-pill);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  color: var(--ink);
  margin-bottom: 12px;
}

/* Article cards */
.article-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.article-card img { width: 100%; height: 180px; object-fit: cover; }
.article-card .article-body { padding: 20px 24px 24px; }
.article-card h3 { font-size: 20px; margin-bottom: 8px; }
.article-meta { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.read-link { font-size: 14px; font-weight: 500; color: var(--primary); }

/* Article page */
.article-hero { padding: 56px 0 32px; }
.article-hero .label { margin-bottom: 12px; }
.article-wrap { max-width: 760px; margin: 0 auto; padding-bottom: 80px; }
.article-wrap p { color: var(--body); }
.article-wrap h2 { margin-top: 40px; }
.article-wrap h3 { margin-top: 28px; font-size: 22px; }
.article-wrap ul, .article-wrap ol { color: var(--body); padding-left: 20px; margin: 0 0 16px; }
.article-wrap li { margin-bottom: 8px; }
.article-figure { margin: 28px 0; }
.article-figure img { width: 100%; border-radius: var(--r-lg); border: 1px solid var(--hairline); height: 380px; object-fit: cover; }
.article-figure figcaption { font-size: 13px; color: var(--muted); margin-top: 8px; }
.callout {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: var(--r-md);
  padding: 16px 20px;
  margin: 24px 0;
}
.callout p:last-child { margin-bottom: 0; }
.code-block {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 20px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  color: var(--ink);
  overflow-x: auto;
  margin: 24px 0;
}
.updated { font-size: 13px; color: var(--muted); margin-top: 8px; }

.source-list { list-style: none; padding: 0; }
.source-list li { margin-bottom: 8px; font-size: 14px; }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.data-table th, .data-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--hairline); }
.data-table th { color: var(--ink); font-weight: 600; background: var(--canvas-soft); }
.data-table tr:last-child td { border-bottom: 0; }

/* Section heads */
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head p { color: var(--body); margin-bottom: 0; }

/* Contact form */
.contact { background: var(--canvas-soft); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.form-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: 32px; }
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 6px; }
.form-row input, .form-row textarea {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font: inherit;
}
.form-row input:focus, .form-row textarea:focus { outline: 2px solid var(--primary); outline-offset: 0; border-color: var(--primary); }
.form-row textarea { min-height: 110px; resize: vertical; }
.form-status { font-size: 14px; margin-top: 12px; min-height: 20px; }
.form-status.success { color: var(--success); }
.form-status.error { color: var(--error); }

/* Page hero (about/privacy/terms) */
.page-hero { padding: 56px 0 24px; border-bottom: 1px solid var(--hairline); }
.page-wrap { max-width: 760px; margin: 0 auto; padding: 40px 0 80px; }
.page-wrap p, .page-wrap li { color: var(--body); }
.page-wrap h2 { margin-top: 36px; }
.page-wrap ul { padding-left: 20px; }

/* Cookie banner */
.cookie-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--ink);
  color: var(--canvas);
  z-index: 100;
}
.cookie-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px 24px; }
.cookie-inner p { margin: 0; font-size: 14px; }
.cookie-inner a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 12px; flex-shrink: 0; }

/* Footer */
.footer { background: var(--canvas); border-top: 1px solid var(--hairline); padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.footer-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.88px; color: var(--muted); margin-bottom: 14px; }
.footer-col a { display: block; font-size: 14px; color: var(--body); margin-bottom: 8px; }
.footer-note { font-size: 14px; color: var(--body); max-width: 36ch; margin-top: 12px; }
.footer-bottom { border-top: 1px solid var(--hairline); margin-top: 32px; padding-top: 20px; }
.footer-bottom p { font-size: 13px; color: var(--muted); margin: 0; }

@media (max-width: 1024px) {
  h1 { font-size: 48px; }
  .hero-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px 24px;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 8px 0; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  h1 { font-size: 34px; letter-spacing: -1px; }
  h2 { font-size: 28px; }
  .section { padding: 56px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}