:root {
  --void: #0a0d1a;
  --midnight: #12172e;
  --slate: #1f243d;
  --panel: #242845;
  --panel-bright: #2e3357;
  --cyan: #19ebf2;
  --magenta: #f238b8;
  --amber: #ffb82e;
  --lime: #8cfa59;
  --violet: #9461fa;
  --coral: #ff6b61;
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.62);
  --faint: rgba(255, 255, 255, 0.38);
  --rail-w: 76px;
  --radius: 18px;
  --font: "Outfit", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 20px;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--void);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); }

.atlas-shell {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  min-height: 100vh;
}

.stamp-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  background: linear-gradient(180deg, var(--void) 0%, var(--midnight) 55%, #0d1528 100%);
  border-right: 1px dashed rgba(25, 235, 242, 0.22);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 22px 0;
  z-index: 30;
}

.rail-mark {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--cyan);
  margin-bottom: 28px;
}

.rail-mark span {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  font-weight: 500;
}

.rail-links {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rail-links a {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--faint);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  transition: border-color 0.2s, color 0.2s, background 0.2s, box-shadow 0.2s;
}

.rail-links a:hover,
.rail-links a.is-active {
  color: var(--void);
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 24px rgba(25, 235, 242, 0.35);
}

.rail-coords {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--faint);
  margin: 18px 0 0;
}

.atlas-main { min-width: 0; }

.hero {
  position: relative;
  min-height: 90vh;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  overflow: hidden;
  padding: clamp(40px, 7vw, 88px) clamp(28px, 6vw, 72px);
  background: radial-gradient(ellipse 80% 60% at 20% 40%, rgba(148, 97, 250, 0.18), transparent 60%),
              radial-gradient(ellipse 70% 50% at 80% 20%, rgba(25, 235, 242, 0.12), transparent 55%),
              linear-gradient(160deg, var(--void) 0%, var(--midnight) 50%, var(--slate) 100%);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(25, 235, 242, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 235, 242, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 45%, black 20%, transparent 75%);
  pointer-events: none;
}

.hero-border-lines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 80px,
      rgba(242, 56, 184, 0.08) 80px,
      rgba(242, 56, 184, 0.08) 81px
    );
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.hero-kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 14px;
}

.hero h1 {
  margin: 0 0 22px;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand {
  display: block;
  background: linear-gradient(100deg, var(--cyan), var(--magenta), var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 0 0 30px;
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 38ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-tripoint,
.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
}

.btn-tripoint {
  color: var(--void);
  background: linear-gradient(100deg, var(--cyan), var(--magenta), var(--amber));
  box-shadow: 0 12px 36px rgba(25, 235, 242, 0.28);
}

.btn-outline {
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.04);
}

.hero-pins {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.pin {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 3s ease-in-out infinite;
}

.pin::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid currentColor;
  opacity: 0.35;
}

.pin-cyan { background: var(--cyan); color: var(--cyan); animation-delay: 0s; }
.pin-magenta { background: var(--magenta); color: var(--magenta); animation-delay: 0.6s; }
.pin-amber { background: var(--amber); color: var(--amber); animation-delay: 1.2s; }
.pin-violet { background: var(--violet); color: var(--violet); animation-delay: 1.8s; }
.pin-lime { background: var(--lime); color: var(--lime); animation-delay: 2.4s; }

@keyframes pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.85; }
  50% { transform: translate(-50%, -50%) scale(1.25); opacity: 1; }
}

.hero-tripoint {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 24px;
  display: none;
}

.tri-shape {
  position: relative;
  width: 140px;
  height: 122px;
  margin: 0 auto 12px;
  clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
  background: linear-gradient(160deg, rgba(25, 235, 242, 0.2), rgba(242, 56, 184, 0.2));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.tri-shape span {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--cyan);
}

.tri-n { top: 18%; left: 50%; transform: translateX(-50%); }
.tri-e { bottom: 12%; right: 14%; }
.tri-s { bottom: 12%; left: 14%; }

.hero-tripoint p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--faint);
  font-family: var(--mono);
  letter-spacing: 0.06em;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--midnight);
}

.metric {
  padding: 28px 16px;
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.metric:last-child { border-right: none; }

.metric strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
  background: linear-gradient(100deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.metric span {
  font-size: 0.78rem;
  color: var(--faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.section-intro {
  padding: 56px clamp(24px, 5vw, 64px) 28px;
  max-width: 700px;
}

.section-intro h2 {
  margin: 0 0 10px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
}

.section-intro p {
  margin: 0;
  color: var(--muted);
}

.tab-cards {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 0 clamp(24px, 5vw, 64px) 56px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.tab-card {
  flex: 0 0 min(300px, 80vw);
  scroll-snap-align: start;
  background: var(--panel);
  border-radius: var(--radius);
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow);
  border-top: 3px solid var(--cyan);
}

.tab-atlas { border-top-color: var(--magenta); }
.tab-oddities { border-top-color: var(--amber); }
.tab-crossings { border-top-color: var(--coral); }
.tab-challenges { border-top-color: var(--violet); }
.tab-passport { border-top-color: var(--lime); }

.tab-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
}

.tab-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.tab-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.category-constellation {
  padding-bottom: 56px;
  background: linear-gradient(180deg, transparent, rgba(148, 97, 250, 0.06) 50%, transparent);
}

.cat-grid {
  list-style: none;
  margin: 0;
  padding: 0 clamp(24px, 5vw, 64px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.cat-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.07);
  font-weight: 600;
  font-size: 0.92rem;
}

.cat-chip span {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  font-size: 0.85rem;
}

.cat-trijunction span { background: rgba(25, 235, 242, 0.18); color: var(--cyan); }
.cat-enclave span { background: rgba(242, 56, 184, 0.18); color: var(--magenta); }
.cat-exclave span { background: rgba(148, 97, 250, 0.18); color: var(--violet); }
.cat-oddity span { background: rgba(255, 184, 46, 0.18); color: var(--amber); }
.cat-crossing span { background: rgba(255, 107, 97, 0.18); color: var(--coral); }
.cat-park span { background: rgba(140, 250, 89, 0.18); color: var(--lime); }
.cat-house span { background: rgba(250, 140, 200, 0.18); color: #fa8cc8; }
.cat-fort span { background: rgba(184, 140, 97, 0.18); color: #b88c61; }

.records-panel {
  padding: clamp(48px, 8vw, 80px) clamp(24px, 5vw, 64px);
  background: var(--midnight);
  border-top: 1px dashed rgba(25, 235, 242, 0.15);
  border-bottom: 1px dashed rgba(25, 235, 242, 0.15);
}

.records-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
  max-width: 1100px;
}

.records-copy h2 {
  margin: 0 0 14px;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.records-copy > p {
  margin: 0 0 24px;
  color: var(--muted);
}

.spotlight-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.spotlight-list li {
  padding: 14px 16px;
  background: var(--panel);
  border-radius: 12px;
  border-left: 3px solid var(--cyan);
  font-size: 0.92rem;
  color: var(--muted);
}

.spotlight-list strong { color: var(--text); }

.records-cards {
  display: grid;
  gap: 14px;
}

.record-card {
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.record-label {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}

.record-value {
  margin: 0 0 4px;
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
}

.record-sub {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.record-long .record-value { color: var(--amber); }
.record-short .record-value { color: var(--coral); }
.record-micro .record-value { color: var(--magenta); }

.about-block {
  max-width: 680px;
  padding: 56px clamp(24px, 5vw, 64px);
}

.about-block h2 {
  margin: 0 0 12px;
  font-size: 1.5rem;
}

.about-block p {
  margin: 0;
  color: var(--muted);
}

.legal-zone {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 24px;
  padding: 48px clamp(24px, 5vw, 64px) 32px;
  background: linear-gradient(180deg, var(--void), #060810);
}

.legal-panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 28px;
}

.legal-panel h2 {
  margin: 0 0 16px;
  font-size: 1.3rem;
}

.legal-panel h3 {
  margin: 20px 0 8px;
  font-size: 0.95rem;
  color: var(--cyan);
}

.legal-panel p {
  margin: 0 0 12px;
  font-size: 0.92rem;
  color: var(--muted);
  line-height: 1.65;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 24px clamp(24px, 5vw, 64px);
  background: #060810;
  color: var(--faint);
  font-size: 0.85rem;
}

.site-footer nav {
  display: flex;
  gap: 20px;
}

.site-footer a {
  text-decoration: none;
}

@media (min-width: 1024px) {
  .hero-tripoint { display: block; }
}

@media (max-width: 900px) {
  .atlas-shell { grid-template-columns: 1fr; }

  .stamp-rail {
    position: fixed;
    bottom: 0;
    top: auto;
    left: 0;
    right: 0;
    height: auto;
    flex-direction: row;
    padding: 10px 14px;
    border-right: none;
    border-top: 1px dashed rgba(25, 235, 242, 0.22);
    background: rgba(10, 13, 26, 0.94);
    backdrop-filter: blur(10px);
  }

  .rail-mark,
  .rail-coords { display: none; }

  .rail-links {
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
    flex: unset;
  }

  .rail-links a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 0.6rem;
  }

  .atlas-main { padding-bottom: 72px; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: none; }
  .metric:nth-child(1),
  .metric:nth-child(2) { border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
  .records-split { grid-template-columns: 1fr; }
}