:root {
  --bg: #dfe3e8;
  --bg-deep: #cfd5dd;
  --ink: #14181f;
  --ink-soft: #3d4654;
  --muted: #5e6878;
  --line: rgba(20, 24, 31, 0.14);
  --accent: #c2410c;
  --accent-ink: #fff7ed;
  --station: #f4f6f8;
  --shadow-card: #0f1318;
  --font-display: "Syne", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "IBM Plex Sans", "Helvetica Neue", sans-serif;
  --space: clamp(1.25rem, 3vw, 2.5rem);
  --measure: 38rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 0.4vw + 1rem, 1.2rem);
  line-height: 1.55;
  background:
    linear-gradient(165deg, #e7ebf0 0%, var(--bg) 42%, var(--bg-deep) 100%);
  background-attachment: fixed;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 79px,
      var(--line) 79px,
      var(--line) 80px
    );
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 70%);
  z-index: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.6rem 0.9rem;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-haze {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      180deg,
      rgba(223, 227, 232, 0.15) 0%,
      rgba(223, 227, 232, 0.55) 48%,
      rgba(207, 213, 221, 0.92) 100%
    ),
    linear-gradient(
      90deg,
      rgba(223, 227, 232, 0.88) 0%,
      rgba(223, 227, 232, 0.2) 42%,
      rgba(223, 227, 232, 0.75) 100%
    );
}

.station-board {
  position: absolute;
  inset: 8% 4% 18%;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.6rem, 1.8vw, 1.4rem);
}

.station-col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 0;
}

.station-label {
  font-family: var(--font-display);
  font-size: clamp(0.7rem, 0.9vw, 0.85rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.track {
  position: relative;
  flex: 1;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(244, 246, 248, 0.95), rgba(232, 236, 241, 0.7));
  overflow: hidden;
}

.station-col.is-active .track {
  border-color: rgba(194, 65, 12, 0.35);
}

.card-chip {
  position: absolute;
  left: 50%;
  top: 12%;
  width: min(78%, 9.5rem);
  padding: 0.85rem 0.75rem;
  transform: translateX(-50%);
  background: var(--station);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-align: center;
  animation: card-visit 9s ease-in-out infinite;
}

@keyframes card-visit {
  0%,
  8% {
    top: 10%;
    opacity: 0;
    transform: translateX(-50%) translateY(-8px);
  }
  18%,
  72% {
    top: 38%;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  88%,
  100% {
    top: 78%;
    opacity: 0;
    transform: translateX(-50%) translateY(12px);
  }
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(100% - 2 * var(--space), 42rem);
  margin: 0 auto var(--space);
  padding: var(--space);
  padding-bottom: clamp(2rem, 6vh, 4rem);
}

.brand {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 9vw, 5.5rem);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.hero-copy h1 {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0 0 1.75rem;
  max-width: 34ch;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
}

.cta-row {
  margin: 0;
}

.cta {
  display: inline-block;
  padding: 0.85rem 1.35rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease;
}

.cta:hover,
.cta:focus-visible {
  background: #9a3412;
  transform: translateY(-1px);
}

.cta:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

main {
  position: relative;
  z-index: 1;
  width: min(100% - 2 * var(--space), 44rem);
  margin: 0 auto;
  padding: clamp(3rem, 10vh, 6rem) 0 clamp(2rem, 6vh, 4rem);
}

.section {
  padding: clamp(2.5rem, 7vh, 4.5rem) 0;
  border-top: 1px solid var(--line);
}

.section-kicker {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.section h2 {
  margin: 0 0 1rem;
  max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.section p {
  margin: 0;
  max-width: var(--measure);
  color: var(--ink-soft);
}

.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

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

.footer {
  position: relative;
  z-index: 1;
  width: min(100% - 2 * var(--space), 44rem);
  margin: 0 auto;
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--line);
}

.footer-brand {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.footer-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .station-board {
    inset: 6% 3% 42%;
    gap: 0.45rem;
  }

  .station-label {
    letter-spacing: 0.04em;
    font-size: 0.62rem;
  }

  .card-chip {
    width: min(88%, 7.5rem);
    padding: 0.65rem 0.45rem;
    font-size: 0.72rem;
  }

  .hero-copy {
    background: linear-gradient(
      180deg,
      transparent,
      rgba(223, 227, 232, 0.88) 18%,
      rgba(207, 213, 221, 0.96)
    );
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .card-chip {
    animation: none;
    top: 38%;
    opacity: 1;
    transform: translateX(-50%);
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .cta {
    transition: none;
  }
}