:root {
  --ink: #14181f;
  --ink-soft: #4b5563;
  --paper: #fbfaf7;
  --paper-alt: #f1efe9;
  --line: #e2ded3;
  --accent: #d64545;
  --accent-ink: #7a1f1f;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --display: 'Space Grotesk', var(--sans);
  --radius: 10px;
  --max-w: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 600; }
.brand-mark {
  display: grid; place-items: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--ink); color: var(--paper);
  font-size: 13px; letter-spacing: 0.02em;
}
.brand-sub { color: var(--ink-soft); font-weight: 500; font-size: 0.9em; }
nav[aria-label="Primary"] { display: flex; align-items: center; gap: 28px; }
nav[aria-label="Primary"] a {
  color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; font-weight: 500;
}
nav[aria-label="Primary"] a:hover { color: var(--ink); }
.nav-cta {
  background: var(--accent); color: #fff !important;
  padding: 8px 16px; border-radius: 999px; font-weight: 600 !important;
}
.nav-cta:hover { background: var(--accent-ink); }

/* Hero */
.hero { padding: 72px 0 48px; border-bottom: 1px solid var(--line); }
.eyebrow {
  font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.12em;
  font-size: 0.75rem; color: var(--accent-ink); margin: 0 0 16px;
}
.hero h1 {
  font-family: var(--display); font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1.12; margin: 0 0 20px; max-width: 18ch;
}
.hero-lede { font-size: 1.1rem; color: var(--ink-soft); max-width: 62ch; margin: 0 0 32px; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 40px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px; border-radius: 8px; font-weight: 600; font-size: 0.95rem;
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-block { width: 100%; }

.hero-meta { display: flex; gap: 40px; margin: 0; flex-wrap: wrap; }
.hero-meta div { display: flex; flex-direction: column; gap: 4px; }
.hero-meta dt {
  font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--ink-soft);
}
.hero-meta dd { margin: 0; font-weight: 600; font-size: 1.05rem; }

/* Strip */
.strip { background: var(--ink); color: var(--paper); padding: 14px 0; }
.strip-inner {
  display: flex; gap: 32px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.04em; opacity: 0.85;
}

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: var(--paper-alt); }
.section-title {
  font-family: var(--display); font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 12px;
}
.section-lede { color: var(--ink-soft); max-width: 60ch; margin: 0 0 40px; }

/* Agenda */
.day-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 28px; }
.day-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: 0 1px 2px rgba(20,24,31,0.04);
}
.day-head { margin-bottom: 20px; }
.day-label {
  font-family: var(--mono); font-size: 0.75rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--accent-ink);
}
.day-head h3 { margin: 6px 0 0; font-family: var(--display); font-size: 1.3rem; }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
  display: flex; gap: 16px; padding: 10px 0; border-top: 1px solid var(--line);
}
.timeline li:first-child { border-top: none; }
.timeline .time {
  font-family: var(--mono); font-size: 0.85rem; color: var(--ink-soft);
  flex-shrink: 0; width: 52px;
}
.timeline .what { font-size: 0.95rem; }

/* Tracks */
.track-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.track-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px;
}
.track-tag {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  color: var(--accent); text-transform: uppercase;
}
.track-card h3 { font-family: var(--display); margin: 8px 0 10px; font-size: 1.15rem; }
.track-card p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }

/* Logistics */
.logistics-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; }
.fact-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.fact-list li { padding-left: 18px; position: relative; }
.fact-list li::before {
  content: ''; position: absolute; left: 0; top: 9px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
}
.fact-list.compact li { font-size: 0.9rem; color: var(--ink-soft); }
.callout {
  background: var(--ink); color: var(--paper); border-radius: var(--radius);
  padding: 28px; align-self: start;
}
.callout h3 { font-family: var(--display); margin: 0 0 10px; font-size: 1.1rem; }
.callout p { margin: 0; opacity: 0.85; font-size: 0.92rem; }

/* Signup */
.section-signup { background: var(--paper-alt); }
.signup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.signup-form {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; display: flex; flex-direction: column; gap: 18px;
}
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row label, fieldset legend {
  font-size: 0.85rem; font-weight: 600; color: var(--ink);
}
.optional { font-weight: 400; color: var(--ink-soft); }
input[type="text"], input[type="email"], select, textarea {
  font: inherit; padding: 11px 12px; border: 1px solid var(--line);
  border-radius: 6px; background: var(--paper); color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent);
}
fieldset { border: none; padding: 0; margin: 0; }
.radio-group { display: flex; gap: 20px; margin-top: 4px; }
.radio-label { display: flex; align-items: center; gap: 6px; font-weight: 500 !important; }
.field-hint { font-size: 0.8rem; color: var(--accent-ink); min-height: 1em; }
.form-status { margin: 0; font-size: 0.9rem; min-height: 1.2em; }
.form-status.ok { color: #1a7a3c; }
.form-status.err { color: var(--accent-ink); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; }
.footer-inner {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 0.85rem; color: var(--ink-soft);
}

@media (max-width: 860px) {
  nav[aria-label="Primary"] { display: none; }
  .logistics-grid, .signup-grid { grid-template-columns: 1fr; }
}