:root {
  --bg: #13130f;
  --panel: #1f2318;
  --panel-soft: #252b1e;
  --ink: #f2efdf;
  --ink-dim: #c9c3ad;
  --accent: #bb6f4a;
  --accent-2: #d3b678;
  --line: #46503d;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Serif TC", "PingFang TC", "Microsoft JhengHei", serif;
  background:
    radial-gradient(circle at 20% -10%, rgba(187, 111, 74, 0.18), transparent 42%),
    radial-gradient(circle at 90% 20%, rgba(211, 182, 120, 0.2), transparent 38%),
    var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 0.7px, transparent 0.7px);
  background-size: 4px 4px;
  opacity: 0.2;
  mix-blend-mode: overlay;
  z-index: -1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 5vw;
  border-bottom: 1px solid rgba(201, 195, 173, 0.25);
  backdrop-filter: blur(10px);
  background: rgba(19, 19, 15, 0.85);
}

.brand {
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.site-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-nav a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--ink);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--ink);
  border-radius: 10px;
  padding: 0.35rem 0.65rem;
}

main {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.hero {
  padding: 5.5rem 0 4rem;
}

.hero h1 {
  margin: 0.4rem 0 1rem;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.1;
  max-width: 16ch;
}

.hero p {
  max-width: 62ch;
  color: var(--ink-dim);
}

.eyebrow {
  margin: 0;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.hero-actions,
.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.65rem 1.15rem;
  text-decoration: none;
  font-weight: 700;
  transition: transform 180ms ease, opacity 180ms ease, border-color 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-solid {
  background: linear-gradient(120deg, var(--accent), #d1815a);
  color: #1f140f;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(37, 43, 30, 0.4);
}

.hero-meta {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
}

.hero-meta li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem 1rem;
}

.hero-meta span {
  color: var(--ink-dim);
  font-size: 0.82rem;
}

.hero-meta strong {
  display: block;
  margin-top: 0.25rem;
}

.section {
  margin: 2.8rem 0;
  background: rgba(37, 43, 30, 0.6);
  border: 1px solid rgba(70, 80, 61, 0.7);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2vw, 2rem);
  box-shadow: var(--shadow);
}

.section-head h2 {
  margin: 0.35rem 0 0.3rem;
  font-size: clamp(1.3rem, 3vw, 2rem);
}

.section-head p {
  margin: 0;
  color: var(--ink-dim);
}

.cards {
  margin-top: 1.1rem;
  display: grid;
  gap: 0.9rem;
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.route-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.card h3,
.route-item h3 {
  margin-top: 0;
}

.card p {
  color: var(--ink-dim);
}

.label {
  color: var(--accent-2) !important;
  font-size: 0.82rem;
}

.race-progress {
  margin-top: 1.2rem;
}

.progress {
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--line);
}

.progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.route-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.route-item small {
  color: var(--accent-2);
}

.split {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.split ul {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
}

.faq details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  margin-top: 0.7rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.cta {
  text-align: center;
}

.site-footer {
  text-align: center;
  color: var(--ink-dim);
  padding: 2rem 5vw 4rem;
}

.floating-cta {
  display: none;
}

@media (max-width: 980px) {
  .three-up,
  .route-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-meta {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: auto auto 1fr auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 0.9rem 5vw;
    background: rgba(19, 19, 15, 0.97);
    border-bottom: 1px solid var(--line);
    justify-content: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }

  .site-nav.open {
    display: flex;
  }

  .site-header > .btn {
    display: none;
  }

  .three-up,
  .route-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 4rem;
  }

  .floating-cta {
    position: fixed;
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    z-index: 12;
    display: inline-flex;
    justify-content: center;
    border-radius: 999px;
    background: linear-gradient(120deg, var(--accent), #d1815a);
    color: #1f140f;
    text-decoration: none;
    font-weight: 700;
    padding: 0.8rem 1rem;
    box-shadow: var(--shadow);
  }
}