/* ── Section scaffolding ─────────────────────────────────────── */
.screen { min-height: 100vh; scroll-snap-align: start; display: flex; flex-direction: column; justify-content: center; padding: 100px 0 64px; position: relative; }
.screen.top-align { justify-content: flex-start; }
.sec-head { max-width: 680px; }
.sec-head.center { margin: 0 auto; text-align: center; }
.sec-head h2 { font-size: clamp(1.9rem, 3.2vw, 2.8rem); margin-top: 14px; }
.sec-head p { color: var(--text-2); font-size: 1.08rem; margin-top: 14px; }