/* ─── Bubbles hero ──────────────────────────────────────────────── */
.wa-bubbles-hero {
  position: relative;
  min-height: 88vh;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.wa-bubbles-hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.wa-bubbles-hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-block: clamp(60px, 8vw, 120px);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: end;
}
@media (max-width: 880px) { .wa-bubbles-hero__inner { grid-template-columns: 1fr; } }
.wa-bubbles-hero__pill { margin-bottom: 28px; }
.wa-bubbles-hero__title {
  font-family: var(--wa-font-display);
  font-size: clamp(56px, 8vw, 124px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--wa-ink);
  margin: 0;
  max-width: 14ch;
}
.wa-bubbles-hero__title em { font-style: italic; color: var(--wa-terra-deep); }
.wa-bubbles-hero__copy {
  background: rgba(250, 248, 245, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--wa-line);
  border-radius: var(--wa-radius-md);
  padding: clamp(20px, 2vw, 28px);
  font-size: 15px;
  line-height: 1.55;
  color: var(--wa-ink-soft);
  max-width: 480px;
}
.wa-bubbles-hero__hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-family: var(--wa-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--wa-muted);
}
.wa-bubbles-hero__hint::before { content: "↗"; color: var(--wa-terra-deep); }

/* ─── Principles (§01) ──────────────────────────────────────────── */
.wa-principles__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 2.5vw, 32px);
}
@media (max-width: 720px) { .wa-principles__grid { grid-template-columns: 1fr; } }
.wa-principles__card {
  background: var(--wa-bg-alt);
  border: 1px solid var(--wa-line);
  border-radius: var(--wa-radius-lg);
  padding: clamp(28px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 280ms var(--wa-ease), border-color 280ms var(--wa-ease);
}
.wa-principles__card:hover { transform: translateY(-4px); border-color: var(--wa-ink); }
.wa-principles__card-num { font-family: var(--wa-font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--wa-terra-deep); text-transform: uppercase; }
.wa-principles__card-title {
  font-family: var(--wa-font-display);
  font-size: clamp(24px, 2.5vw, 36px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--wa-ink);
  margin: 0;
}
.wa-principles__card-desc { color: var(--wa-ink-soft); font-size: 15px; line-height: 1.55; margin: 0; }

/* ─── Timeline (§02) ────────────────────────────────────────────── */
.wa-timeline { position: relative; padding-left: 32px; }
.wa-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--wa-line);
}
.wa-timeline__row { position: relative; padding-block: clamp(24px, 3vw, 36px); padding-left: 24px; }
.wa-timeline__row::before {
  content: "";
  position: absolute;
  left: -32px;
  top: clamp(28px, 3vw, 40px);
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--wa-bg);
  border: 2px solid var(--wa-terra-deep);
  box-shadow: 0 0 0 4px var(--wa-bg);
}
.wa-timeline__row + .wa-timeline__row { border-top: 1px solid var(--wa-line); }
.wa-timeline__year {
  font-family: var(--wa-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--wa-terra-deep);
  margin-bottom: 8px;
}
.wa-timeline__title {
  font-family: var(--wa-font-display);
  font-size: clamp(24px, 2.4vw, 36px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--wa-ink);
  margin: 0 0 8px;
}
.wa-timeline__desc { color: var(--wa-ink-soft); font-size: 15px; line-height: 1.55; margin: 0; max-width: 60ch; }

/* ─── CTA strip ─────────────────────────────────────────────────── */
.wa-cta-strip {
  background: var(--wa-bg-alt);
  border-top: 1px solid var(--wa-line);
  border-bottom: 1px solid var(--wa-line);
}
.wa-cta-strip__inner {
  padding-block: clamp(60px, 8vw, 110px);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: end;
}
@media (max-width: 880px) { .wa-cta-strip__inner { grid-template-columns: 1fr; } }
.wa-cta-strip__title {
  font-family: var(--wa-font-display);
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--wa-ink);
  margin: 0;
  max-width: 18ch;
}
.wa-cta-strip__title em { font-style: italic; color: var(--wa-terra-deep); }
.wa-cta-strip__actions { display: flex; gap: 14px; flex-wrap: wrap; }