:root {
  --bg: #FAFAF8;
  --fg: #1A1A1A;
  --fg-muted: #6B6B6B;
  --accent: #D97706;
  --accent-light: #FEF3C7;
  --border: #E5E5E0;
  --card-bg: #FFFFFF;
  --serif: 'Instrument Serif', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
  /* Aliases for auth views */
  --color-bg: var(--bg);
  --color-text: var(--fg);
  --color-text-muted: var(--fg-muted);
  --color-surface: var(--card-bg);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ——— Nav ——— */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
}
.nav-brand {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: -0.01em;
}
.nav-tagline {
  font-size: 13px;
  color: var(--fg-muted);
  font-style: italic;
}
.nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 8px;
}
.nav-cta:hover { opacity: 0.9; }

/* ——— Hero ——— */
.hero {
  padding: 80px 48px 96px;
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.hero-text { padding-top: 8px; }
.hero-headline {
  font-family: var(--serif);
  font-size: clamp(36px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  font-weight: 400;
}
.hero-sub {
  font-size: 17px;
  color: var(--fg-muted);
  max-width: 440px;
  line-height: 1.7;
}

/* Briefing card mockup */
.hero-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--accent);
  color: #fff;
}
.card-date { font-size: 13px; font-weight: 500; }
.card-badge { font-size: 12px; background: rgba(255,255,255,0.2); padding: 2px 8px; border-radius: 99px; }
.card-items { padding: 16px; display: flex; flex-direction: column; gap: 1px; }
.card-item { padding: 14px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); }
.card-item--focus { background: #FFFBEB; border-color: #FCD34D; }
.item-source { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); display: block; margin-bottom: 6px; }
.item-text { font-size: 13.5px; line-height: 1.55; color: var(--fg); margin-bottom: 8px; }
.item-tag { font-size: 11px; color: var(--fg-muted); }
.card-footer { padding: 10px 16px; border-top: 1px solid var(--border); font-size: 11.5px; color: var(--fg-muted); }

/* ——— Section base ——— */
.section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 20px;
}
.section-heading {
  font-family: var(--serif);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.section-body {
  color: var(--fg-muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 560px;
}

/* ——— Brief Case ——— */
.brief-case { padding: 96px 48px; border-bottom: 1px solid var(--border); }
.brief-case-inner { max-width: 1200px; margin: 0 auto; }
.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 56px; }
.feature-icon { width: 40px; height: 40px; border: 1px solid var(--border); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--accent); margin-bottom: 16px; }
.feature h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.feature p { font-size: 14px; color: var(--fg-muted); line-height: 1.65; }

/* ——— How It Works ——— */
.how-it-works { padding: 96px 48px; border-bottom: 1px solid var(--border); background: #F5F5F2; }
.how-it-works-inner { max-width: 1200px; margin: 0 auto; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; margin-top: 56px; }
.step-num { font-family: var(--serif); font-size: 48px; color: var(--border); display: block; margin-bottom: 16px; line-height: 1; }
.step h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--fg-muted); line-height: 1.65; }

/* ——— The Stack ——— */
.the-stack { padding: 80px 48px; border-bottom: 1px solid var(--border); }
.the-stack-inner { max-width: 1200px; margin: 0 auto; }
.stack-grid { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; }
.stack-pill { padding: 8px 16px; background: var(--card-bg); border: 1px solid var(--border); border-radius: 99px; font-size: 13px; font-weight: 500; }

/* ——— Manifesto ——— */
.manifesto { padding: 96px 48px; border-bottom: 1px solid var(--border); }
.manifesto-inner { max-width: 760px; margin: 0 auto; }
.manifesto-quote {
  font-family: var(--serif);
  font-size: clamp(22px, 2.5vw, 30px);
  font-style: italic;
  line-height: 1.4;
  color: var(--fg);
  margin-bottom: 32px;
  border-left: 3px solid var(--accent);
  padding-left: 28px;
}
.manifesto-body { font-size: 16px; color: var(--fg-muted); line-height: 1.75; }

/* ——— Closing ——— */
.closing { padding: 96px 48px; }
.closing-inner { max-width: 1200px; margin: 0 auto; }
.closing-headline {
  font-family: var(--serif);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 640px;
}
.closing-sub { margin-top: 20px; font-size: 16px; color: var(--fg-muted); }

/* ——— Footer ——— */
.footer { padding: 32px 48px; border-top: 1px solid var(--border); }
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.footer-brand { font-family: var(--serif); font-size: 16px; }
.footer-copy { font-size: 13px; color: var(--fg-muted); }

/* ——— Responsive ——— */
@media (max-width: 768px) {
  .nav { padding: 16px 24px; }
  .hero { padding: 56px 24px 64px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .brief-case { padding: 64px 24px; }
  .brief-case-inner { max-width: 100%; }
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .how-it-works { padding: 64px 24px; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  .the-stack { padding: 64px 24px; }
  .manifesto { padding: 64px 24px; }
  .closing { padding: 64px 24px; }
  .footer { padding: 24px; }
  .footer-inner { flex-direction: column; gap: 8px; align-items: flex-start; }
}