*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #0c0c0c;
  --surface: #141414;
  --border:  #272727;
  --accent:  #f97316;
  --text:    #f0f0f0;
  --muted:   #6b6b6b;
  --radius:  10px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 24px;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: all 0.18s;
}
.btn-sm { padding: 7px 16px; font-size: 13px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #e8680a; }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: #555; }
.btn-block { width: 100%; justify-content: center; }

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 58px;
  background: rgba(12,12,12,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px 0 16px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo { font-weight: 700; font-size: 15px; letter-spacing: -0.2px; color: var(--text); text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { font-size: 13px; color: var(--muted); font-weight: 500; transition: color 0.15s; }
.nav-links a:hover { color: var(--text); }

/* ── Hero ── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 620px;
  display: flex;
  align-items: center;
}
.hero-img {
  position: absolute;
  inset: 0;
  background-image: url('images/denver-travel_16x9.avif');
  background-size: cover;
  background-position: center 40%;
  background-color: #1a1a1a;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(12,12,12,0.55) 0%,
    rgba(12,12,12,0.78) 60%,
    rgba(12,12,12,1) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 58px;
}
.badge {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid rgba(249,115,22,0.5);
  color: var(--accent);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 18px;
}
.accent { color: var(--accent); }
.hero-sub {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 36px;
  letter-spacing: 0.01em;
}
.hero-cta { display: flex; gap: 10px; flex-wrap: wrap; }

/* ── Sections ── */
.section { padding: 96px 0; }
.section-dark { background: var(--surface); }
.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 48px;
  line-height: 1.1;
}

/* ── Tracks ── */
.tracks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.track-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  transition: border-color 0.2s;
}
.track-card:hover { border-color: #3a3a3a; }

.track-img {
  height: 260px;
  background-size: cover;
  background-position: center;
  background-color: #1c1c1c;
  position: relative;
  overflow: hidden;
}
.track-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.track-img-1 {
  background-image: url('https://images.unsplash.com/photo-1477959858617-67f85cf4f1df?auto=format&fit=crop&w=900&q=80');
}
.track-img-2 {
  background-image: url('https://images.unsplash.com/photo-1545558014-8692077e9b5c?auto=format&fit=crop&w=900&q=80');
}

.track-body { padding: 28px; }
.track-num {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-transform: uppercase;
}
.track-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 8px 0 10px;
}
.track-body p {
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 6px;
  line-height: 1.6;
}
.track-challenge-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 18px 0 10px;
}
.track-challenges {
  list-style: none;
  border-top: 1px solid var(--border);
  margin-bottom: 16px;
}
.track-challenges li {
  font-size: 13px;
  color: var(--muted);
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.5;
}
.track-challenges li strong { color: var(--text); font-weight: 600; }
.track-partner { font-size: 12px !important; margin-top: 4px; }
.track-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.track-tags span {
  padding: 3px 10px;
  background: rgba(249,115,22,0.08);
  border: 1px solid rgba(249,115,22,0.18);
  border-radius: 4px;
  font-size: 11.5px;
  color: var(--accent);
  font-weight: 500;
}

/* ── Schedule ── */
.dates {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.date-card {
  padding: 32px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.date-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  margin-bottom: 10px;
}
.date-card h4 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.date-card p { font-size: 13px; color: var(--muted); line-height: 1.55; }

/* ── Partners ── */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}
.partner-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px 18px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.partner-featured {
  border-color: var(--border);
  background: var(--surface);
}
.partner-logo-area {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-bottom: 4px;
}
.partner-logo-area img {
  max-height: 64px;
  max-width: 150px;
  object-fit: contain;
  opacity: 0.9;
}
.partner-featured .partner-logo-area img { opacity: 0.9; }
.logo-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.partner-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
}
.partner-tier {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.partner-featured .partner-tier { color: var(--muted); }
.partners-cta {
  font-size: 14px;
  color: var(--muted);
}
.partners-cta a { color: var(--accent); }
.partners-cta a:hover { text-decoration: underline; }


/* ── Footer ── */
.footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer p { font-size: 13px; color: var(--muted); }
.footer a { color: var(--muted); transition: color 0.15s; }
.footer a:hover { color: var(--text); }

/* ── Responsive ── */
@media (max-width: 720px) {
  .tracks { grid-template-columns: 1fr; }
  .dates { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: 1fr 1fr; }
  .hero-content h1 { font-size: 2.4rem; }
  .nav-links li:not(:last-child) { display: none; }
}