/* ============================================================
   HOME PAGE — editorial, asymmetric, warm
   ============================================================ */

/* ---------- HERO ---------- */
.hero {
  padding: var(--space-16) 0 var(--space-12);
  position: relative;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: end;
}
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; gap: var(--space-8); } }

.hero__headline {
  font-size: var(--fs-mega);
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--color-primary);
  font-weight: 400;
}
.hero__headline em {
  font-style: italic;
  font-weight: 300;
  color: var(--color-accent);
}
.hero__lead {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-ink-soft);
  max-width: 42ch;
  margin-bottom: var(--space-6);
}
.hero__ctas {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* Bookmark ribbon in hero */
.hero__ribbon {
  position: absolute;
  top: 0;
  right: var(--gutter);
  width: 48px;
  height: 120px;
  background: var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 80%, 0 100%);
  opacity: 0.85;
}
@media (max-width: 640px) { .hero__ribbon { display: none; } }

/* ---------- STATS STRIP ---------- */
.stats {
  padding: var(--space-8) 0;
  border-block: 1px solid var(--color-rule);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-12);
}
@media (max-width: 640px) { .stats { grid-template-columns: 1fr; gap: var(--space-4); } }
.stat__number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 300;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -0.03em;
}
.stat__label {
  font-size: var(--fs-tiny);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  margin-top: var(--space-2);
}

/* ---------- HOW IT WORKS ---------- */
.how {
  padding: var(--space-16) 0;
}
.how__header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: end;
  margin-bottom: var(--space-12);
}
@media (max-width: 720px) { .how__header { grid-template-columns: 1fr; } }
.how__title {
  font-size: var(--fs-h1);
  color: var(--color-primary);
}
.how__intro {
  color: var(--color-ink-soft);
  max-width: 50ch;
}

/* Asymmetric steps — numbered, staggered */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  counter-reset: step;
}
@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }
.step {
  counter-increment: step;
  padding-top: var(--space-6);
  border-top: 2px solid var(--color-primary);
}
.step:nth-child(2) { margin-top: var(--space-8); }
.step:nth-child(3) { margin-top: var(--space-16); }
@media (max-width: 720px) {
  .step:nth-child(2), .step:nth-child(3) { margin-top: 0; }
}
.step__number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-3);
}
.step__number::before { content: counter(step, decimal-leading-zero); }
.step__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  margin-bottom: var(--space-2);
  color: var(--color-ink);
}
.step__desc {
  color: var(--color-ink-soft);
  font-size: var(--fs-small);
  line-height: 1.6;
}

/* ---------- ABOUT SECTION ---------- */
.about-section {
  padding: var(--space-16) 0;
  background: var(--color-paper-deep);
  position: relative;
}
.about-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, transparent 49.5%, var(--color-rule-soft) 49.5%, var(--color-rule-soft) 50.5%, transparent 50.5%);
  background-size: 40px 40px;
  opacity: 0.25;
  pointer-events: none;
}
.about-section__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-12);
  align-items: start;
}
@media (max-width: 900px) { .about-section__inner { grid-template-columns: 1fr; } }
.about-section__title {
  font-size: var(--fs-h1);
  color: var(--color-primary);
  position: sticky;
  top: 120px;
}
.about-section__body p {
  margin-bottom: var(--space-4);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-ink-soft);
}
.about-section__body p:first-child::first-letter {
  font-family: var(--font-display);
  font-size: 4rem;
  float: left;
  line-height: 0.9;
  padding-right: var(--space-3);
  padding-top: var(--space-1);
  color: var(--color-accent);
  font-weight: 400;
}

/* ---------- SUBJECTS STRIP ---------- */
.subjects-strip {
  padding: var(--space-16) 0;
}
.subjects-strip h2 {
  font-size: var(--fs-h2);
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
}
.subject-card {
  padding: var(--space-6);
  background: var(--color-card);
  border: 1px solid var(--color-rule-soft);
  border-radius: var(--radius-sm);
  transition: all var(--duration-base) var(--ease-out);
  cursor: pointer;
  display: block;
}
.subject-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 4px 6px 0 var(--color-primary);
}
.subject-card__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}
.subject-card__count {
  font-size: var(--fs-small);
  color: var(--color-ink-muted);
}

/* ---------- CTA BANNER ---------- */
.cta-banner {
  margin-top: var(--space-16);
  padding: var(--space-12);
  background: var(--color-primary);
  color: var(--color-paper);
  border-radius: var(--radius-md);
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-8);
  align-items: center;
}
@media (max-width: 720px) { .cta-banner { grid-template-columns: 1fr; padding: var(--space-8); } }
.cta-banner h2 {
  font-size: var(--fs-h1);
  color: var(--color-paper);
  margin-bottom: var(--space-3);
}
.cta-banner p {
  color: color-mix(in srgb, var(--color-paper) 80%, transparent);
  font-size: var(--fs-small);
}
.cta-banner .btn--accent {
  justify-self: end;
}
@media (max-width: 720px) { .cta-banner .btn--accent { justify-self: start; } }