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

:root {
  --bg: #F5F0E8;
  --bg-alt: #EDE8DC;
  --fg: #1A1A18;
  --fg-muted: #6B6458;
  --accent: #E8A838;
  --accent-dark: #C88A1A;
  --green: #0D4A3F;
  --green-light: #1A6B58;
  --white: #FFFFFF;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav { position: sticky; top: 0; z-index: 100; background: var(--bg); border-bottom: 1px solid rgba(26,26,24,0.08); }
.nav-inner { max-width: 1100px; margin: 0 auto; padding: 1.1rem 2rem; }
.nav-logo { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; color: var(--green); }

/* HERO */
.hero { max-width: 1100px; margin: 0 auto; padding: 5rem 2rem 4rem; }
.hero-grid { display: grid; grid-template-columns: 260px 1fr; gap: 4rem; align-items: start; }
.hero-stat-col { padding-top: 1.5rem; }
.hero-big-number { font-family: var(--font-display); font-size: 7.5rem; font-weight: 800; line-height: 0.9; color: var(--accent); display: block; }
.hero-stat-label { margin-top: 0.75rem; font-size: 0.8rem; font-weight: 500; color: var(--fg-muted); text-transform: uppercase; letter-spacing: 0.08em; line-height: 1.5; }
.hero-headline { font-family: var(--font-display); font-size: clamp(2.6rem, 5.5vw, 4rem); font-weight: 800; line-height: 1.05; letter-spacing: -0.02em; color: var(--green); margin-bottom: 1.5rem; }
.hero-sub { font-size: 1.05rem; color: var(--fg-muted); line-height: 1.7; margin-bottom: 0.9rem; }
.hero-equation-preview { margin-top: 3.5rem; padding: 1.5rem 2rem; background: var(--green); color: var(--white); font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; display: inline-block; letter-spacing: 0.01em; }
.hero-equation-preview strong { color: var(--accent); }

/* PROBLEM */
.problem { background: var(--fg); color: var(--bg); padding: 5rem 2rem; }
.problem-inner { max-width: 1100px; margin: 0 auto; }
.section-label { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em; color: var(--accent); margin-bottom: 2.5rem; }
.problem-statement { font-family: var(--font-display); font-size: clamp(1.8rem, 3.5vw, 2.7rem); font-weight: 700; line-height: 1.25; margin-bottom: 3.5rem; color: var(--white); }
.problem-statement em { font-style: italic; color: var(--accent); }
.problem-facts { display: flex; flex-direction: column; gap: 1.25rem; }
.problem-fact { display: flex; align-items: flex-start; gap: 1rem; padding: 1.25rem 0; border-bottom: 1px solid rgba(245,240,232,0.12); }
.fact-icon { color: var(--accent); font-size: 0.55rem; margin-top: 0.4rem; flex-shrink: 0; }
.problem-fact p { font-size: 1rem; line-height: 1.6; color: rgba(245,240,232,0.85); }
.problem-fact strong { color: var(--white); }

/* SOLUTION */
.solution { padding: 5rem 2rem; }
.solution-inner { max-width: 1100px; margin: 0 auto; }
.solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.solution-card { padding: 2rem; background: var(--bg-alt); border-radius: 2px; position: relative; }
.card-num { font-family: var(--font-display); font-size: 0.7rem; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 0.12em; display: block; margin-bottom: 1rem; }
.solution-card h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: var(--green); margin-bottom: 0.75rem; line-height: 1.3; }
.solution-card p { font-size: 0.95rem; color: var(--fg-muted); line-height: 1.65; }

/* EQUATION BAND */
.equation-band { background: var(--green); padding: 5rem 2rem; text-align: center; }
.equation-inner { max-width: 1100px; margin: 0 auto; }
.equation-statement { font-family: var(--font-display); font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.2em; color: rgba(255,255,255,0.5); margin-bottom: 2.5rem; }
.equation-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 1.25rem; }
.eq-term { font-family: var(--font-display); font-size: clamp(1.1rem, 2.5vw, 1.8rem); font-weight: 700; color: var(--white); }
.eq-plus, .eq-eq { font-family: var(--font-display); font-size: 1.5rem; color: var(--accent); }
.eq-result { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 800; color: var(--accent); }

/* MANIFESTO */
.manifesto { padding: 6rem 2rem; background: var(--bg-alt); }
.manifesto-inner { max-width: 800px; margin: 0 auto; }
.manifesto-quote { font-family: var(--font-display); font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700; font-style: italic; color: var(--green); line-height: 1.25; margin-bottom: 2.5rem; }
.manifesto-body { font-size: 1.05rem; color: var(--fg-muted); line-height: 1.75; margin-bottom: 1.25rem; }

/* CLOSING */
.closing { padding: 6rem 2rem; background: var(--green); }
.closing-inner { max-width: 900px; margin: 0 auto; }
.closing-statement { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 700; line-height: 1.3; color: var(--white); text-align: center; }

/* FOOTER */
.footer { padding: 3rem 2rem; border-top: 1px solid rgba(26,26,24,0.1); }
.footer-inner { max-width: 1100px; margin: 0 auto; text-align: center; }
.footer-brand { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--green); margin-bottom: 0.3rem; }
.footer-sub { font-size: 0.85rem; color: var(--fg-muted); margin-bottom: 1rem; }
.footer-legal { font-size: 0.75rem; color: var(--fg-muted); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 3rem 1.5rem 3rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-stat-col { display: flex; align-items: baseline; gap: 1rem; }
  .hero-big-number { font-size: 5rem; }
  .solution-grid { grid-template-columns: 1fr; }
  .equation-row { gap: 0.75rem; }
  .eq-term { font-size: 1.1rem; }
  .eq-result { font-size: 2rem; }
  .problem-statement br { display: none; }
  .manifesto { padding: 4rem 1.5rem; }
  .closing { padding: 4rem 1.5rem; }
}