:root {
  --color-white: #ffffff;
  --color-cream: #feccce;
  --color-sand: #ffec9e;
  --color-red: #800b1d;
  --color-black: #000000;

  --bg: var(--color-white);
  --panel: var(--color-white);
  --text: var(--color-black);
  --muted: rgba(0, 0, 0, 0.65);
  --border: rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 34px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 6px 14px rgba(0, 0, 0, 0.08);
  --r-panel: 26px;
  --r-card: 22px;
  --r-pill: 999px;
  --pad: clamp(18px, 3vw, 28px);
  --gap: clamp(18px, 3vw, 34px);
  --space-1: clamp(16px, 2.6vw, 26px);
  --space-2: clamp(24px, 4.5vw, 48px);
  --block-gap: var(--space-1);
  --section-pad: var(--space-2);
}

html {
  font-size: 17px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", system-ui, -apple-system, "Segoe UI", "Roboto", "Arial",
    sans-serif;
  background: var(--bg);
  color: var(--text);
  font-weight: 400;
}

h1,
h2,
h3,
h4 {
  color: var(--color-red);
}

h1 {
  margin: var(--block-gap) 0 var(--block-gap);
}

html,
body {
  height: 100%;
  scroll-snap-type: y mandatory;
}

.section {
  display: flex;
  flex-direction: column;
  gap: var(--block-gap);
  padding: var(--section-pad) 0;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.section + .section {
  margin-top: var(--block-gap);
}

html {
  scroll-behavior: smooth;
}

.reveal {
  opacity: 0;
  transform: translateY(18px) scale(0.98);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@media (max-width: 520px) {
  :root {
    --space-1: 12px;
    --space-2: 18px;
  }

  .section {
    padding: 16px 0;
  }
}

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  border-radius: var(--r-pill);
  padding: 12px 16px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.12s ease;
  user-select: none;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(1px);
}

.btn--dark {
  background: var(--color-red);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn--dark:hover {
  opacity: 0.95;
}

.btn--lg {
  padding: 13px 18px;
}

.btn--compact {
  padding: 9px 14px;
  font-size: 13px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 700;
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.tag--soft {
  background: var(--panel);
  color: var(--color-black);
  border: 1px solid var(--border);
}