/* ── Reset & Base ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --green-900: #1a2e1a;
  --green-800: #2d4a2d;
  --green-700: #3d6b3d;
  --green-600: #4a7c4a;
  --green-100: #e8f0e8;
  --green-50:  #f4f8f4;
  --sand:      #faf8f5;
  --sand-dark: #f0ece5;
  --gold:      #b8943e;
  --gold-light:#d4b85a;
  --text:      #2c2c2c;
  --text-muted:#5a5a5a;
  --white:     #ffffff;
  --font-display: "Playfair Display", Georgia, serif;
  --font-body:    "Inter", -apple-system, sans-serif;
  --max-width: 1120px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.25; }

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

/* ── Container ── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
.container--narrow { max-width: 900px; }

/* ── Button ── */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: 6px;
  padding: 0.85rem 2rem;
  transition: background 0.2s, transform 0.15s;
  cursor: pointer;
  letter-spacing: 0.02em;
}

.btn--primary {
  background: var(--green-700);
  color: var(--white);
}
.btn--primary:hover {
  background: var(--green-600);
  transform: translateY(-1px);
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(26, 46, 26, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.nav__links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav__links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--white); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(160deg, var(--green-900) 0%, var(--green-800) 40%, var(--green-700) 100%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 20% 80%, rgba(184,148,62,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 500px 500px at 80% 20%, rgba(255,255,255,0.03) 0%, transparent 60%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  max-width: 720px;
  padding: 2rem 1.5rem;
}

.hero__eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
  font-weight: 300;
}

.hero__fade {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--sand));
  pointer-events: none;
}

/* ── Sections ── */
.section { padding: 6rem 0; }

.section--light { background: var(--sand); }
.section--dark  { background: var(--green-900); color: var(--white); }
.section--accent { background: var(--sand-dark); }

.section__heading {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin-bottom: 1rem;
  color: inherit;
}

.section__heading--center { text-align: center; }

.section--dark .section__heading { color: var(--white); }

.section__subheading {
  font-size: 1.05rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 540px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.section--dark .section__subheading { color: rgba(255,255,255,0.6); }

/* ── Split (About) ── */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.split__text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.02rem;
}

.split__visual {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.icon-card {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  border: 1px solid rgba(0,0,0,0.04);
}

.icon-card__icon { font-size: 1.8rem; margin-bottom: 0.75rem; }
.icon-card h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.icon-card p { font-size: 0.92rem; color: var(--text-muted); }

/* ── Card Grid (Formulas) ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: background 0.2s, transform 0.2s;
}
.card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

.card__icon { font-size: 2.2rem; margin-bottom: 1rem; }
.card__title { font-size: 1.15rem; margin-bottom: 0.6rem; color: var(--white); }
.card__text { font-size: 0.92rem; color: rgba(255,255,255,0.6); line-height: 1.6; }

/* ── Values ── */
.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

.value__number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--green-700);
  opacity: 0.25;
  margin-bottom: 0.5rem;
}

.value__title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.value p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Footer ── */
.footer {
  background: var(--green-900);
  color: rgba(255,255,255,0.45);
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.85rem;
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .split { grid-template-columns: 1fr; gap: 2.5rem; }
  .card-grid { grid-template-columns: 1fr; }
  .values { grid-template-columns: 1fr; gap: 2rem; }
  .section { padding: 4rem 0; }

  .nav__links { gap: 1.25rem; }
  .nav__links a { font-size: 0.8rem; }
}

@media (max-width: 480px) {
  .nav__links { display: none; }
  .hero__inner { padding: 2rem 1rem; }
}