:root {
  --board: #E8E4DC;
  --board-deep: #D9D4C8;
  --flap: #1A1814;
  --glyph: #F2EFE8;
  --frame: #8A8578;
  --on-time: #2F6B4F;
  --delayed: #9B3A3A;
  --current: #D5DCE6;
  --ink: #1A1814;
  --muted: #5C574C;
  --paper: #F3F0E8;
  --mono: "Chivo Mono", ui-monospace, monospace;
  --display: "Fraunces", Georgia, serif;
  --body: "Source Sans 3", "Source Sans Pro", system-ui, sans-serif;
  --max: 68rem;
  --slot: 0.08rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(213, 220, 230, 0.35), transparent 28%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 27px,
      rgba(138, 133, 120, 0.12) 27px,
      rgba(138, 133, 120, 0.12) 28px
    ),
    var(--board);
  min-height: 100vh;
}
img { max-width: 100%; height: auto; }
a { color: var(--on-time); text-underline-offset: 0.18em; }
a:hover { color: var(--ink); }
.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--flap);
  color: var(--glyph);
  padding: 0.5rem 1rem;
  z-index: 20;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

.shell { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.top {
  border-bottom: var(--slot) solid var(--frame);
  background: color-mix(in srgb, var(--board) 88%, white);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(6px);
}
.top__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.85rem 0 0.35rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--on-time); }
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  padding: 0.35rem 0 0.9rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.15rem;
}
.nav a[aria-current="page"],
.nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--on-time);
}

.board {
  margin: 1.5rem auto 2.5rem;
  width: min(100% - 2rem, var(--max));
  border: 0.35rem solid var(--frame);
  border-radius: 0.35rem;
  background: linear-gradient(180deg, #9a9588, var(--frame));
  box-shadow:
    0 1.5rem 2.5rem rgba(26, 24, 20, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  padding: 0.55rem;
}
.board__metal {
  background: var(--board-deep);
  border: 1px solid color-mix(in srgb, var(--frame) 70%, black);
  padding: 0.75rem 0.85rem 1rem;
}
.board__meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.85rem;
}
.flap-word {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem;
  margin: 0 0 1rem;
}
.flap {
  --delay: 0ms;
  display: inline-grid;
  place-items: center;
  min-width: 1.85rem;
  height: 2.55rem;
  padding: 0 0.2rem;
  background: linear-gradient(180deg, #2a2620 0 49%, #12100e 50% 100%);
  color: var(--glyph);
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  border-radius: 0.2rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    inset 0 -1px 0 rgba(0, 0, 0, 0.55),
    0 2px 0 rgba(0, 0, 0, 0.35);
  position: relative;
  animation: flap-in 0.55s cubic-bezier(0.2, 0.8, 0.2, 1) both;
  animation-delay: var(--delay);
}
.flap::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  top: 50%;
  height: 1px;
  background: rgba(0, 0, 0, 0.55);
}
.flap--space {
  background: transparent;
  box-shadow: none;
  min-width: 0.85rem;
}
.flap--space::after { display: none; }
@keyframes flap-in {
  from { transform: rotateX(-85deg); opacity: 0.2; }
  to { transform: rotateX(0deg); opacity: 1; }
}

.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.65rem, 3.4vw, 2.45rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  max-width: 22ch;
}
.hero__stand {
  margin: 0 0 1.25rem;
  color: var(--muted);
  max-width: 48ch;
  font-size: 1.05rem;
}

.timetable {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.timetable th,
.timetable td {
  text-align: left;
  padding: 0.65rem 0.55rem;
  border-top: var(--slot) solid color-mix(in srgb, var(--frame) 55%, transparent);
  vertical-align: top;
}
.timetable th {
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  border-top: 0;
}
.timetable tr.current {
  background: var(--current);
  animation: row-pulse 2.4s ease-in-out infinite;
}
.timetable a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--on-time) 55%, transparent);
}
.timetable a:hover { border-bottom-color: var(--on-time); }
.status {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 0.15rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.status--ok { background: color-mix(in srgb, var(--on-time) 18%, white); color: var(--on-time); }
.status--note { background: color-mix(in srgb, var(--delayed) 14%, white); color: var(--delayed); }
@keyframes row-pulse {
  0%, 100% { box-shadow: inset 3px 0 0 var(--on-time); }
  50% { box-shadow: inset 3px 0 0 color-mix(in srgb, var(--on-time) 35%, transparent); }
}

.block {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto 2.75rem;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.45rem;
}
.block h2 {
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
  font-weight: 600;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.standards, .faq {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}
.standards li, .faq li {
  background: color-mix(in srgb, var(--paper) 80%, white);
  border: 1px solid color-mix(in srgb, var(--frame) 45%, transparent);
  border-left: 0.35rem solid var(--frame);
  padding: 0.9rem 1rem;
}
.defs {
  display: grid;
  gap: 0.75rem;
  margin: 0;
}
.defs dt {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0;
}
.defs dd {
  margin: 0.2rem 0 0.85rem;
  color: var(--muted);
}

.prose { max-width: 42rem; }
.prose h1 {
  font-family: var(--display);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  line-height: 1.2;
  margin: 0 0 0.5rem;
}
.prose h2 {
  font-family: var(--display);
  font-size: 1.35rem;
  margin: 1.75rem 0 0.6rem;
}
.prose p, .prose li { color: var(--ink); }
.prose ul { padding-left: 1.2rem; }
.article__head {
  padding: 2rem 0 0.5rem;
  border-bottom: var(--slot) solid var(--frame);
  margin-bottom: 1.5rem;
  background: linear-gradient(180deg, var(--current), transparent);
}
.article__meta {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.backlink {
  display: inline-block;
  margin-top: 1.5rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 2px solid var(--on-time);
}
.backlink:hover { color: var(--on-time); }

.foot {
  border-top: var(--slot) solid var(--frame);
  padding: 1.5rem 0 2.5rem;
  background: color-mix(in srgb, var(--board-deep) 70%, white);
  margin-top: 3rem;
}
.foot__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.1rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}
.foot__nav a { color: var(--muted); text-decoration: none; }
.foot__nav a:hover { color: var(--ink); }
.foot__note {
  font-size: 0.92rem;
  color: var(--muted);
  margin: 0 0 1rem;
}
.tb {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 0.75rem;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: var(--slot) solid var(--frame);
  padding-top: 0.75rem;
}
.tb__mark {
  width: 0.7rem;
  height: 0.7rem;
  background: var(--flap);
  box-shadow: inset 0 -50% 0 rgba(255,255,255,0.08);
}

.contact-card {
  background: var(--paper);
  border: 1px solid var(--frame);
  padding: 1.25rem;
  max-width: 36rem;
}
.contact-card code {
  font-family: var(--mono);
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .timetable thead { display: none; }
  .timetable tr {
    display: grid;
    gap: 0.25rem;
    padding: 0.75rem 0.4rem;
    border-top: var(--slot) solid color-mix(in srgb, var(--frame) 55%, transparent);
  }
  .timetable td {
    border: 0;
    padding: 0.1rem 0;
  }
  .timetable td::before {
    content: attr(data-label);
    display: block;
    color: var(--muted);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.1rem;
  }
  .tb {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
  }
  .flap { min-width: 1.45rem; height: 2.1rem; font-size: 0.95rem; }
}

@media (prefers-reduced-motion: reduce) {
  .flap, .timetable tr.current { animation: none; }
}