:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --text: #15171c;
  --muted: #5c6370;
  --border: #e1e4ea;
  --accent: #d9480f;
  --accent-soft: #fff0e8;
  --ok: #2b8a3e;
  --warn: #b35c00;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 4px 16px rgba(16, 24, 40, .05);
  --radius: 14px;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0e12;
    --surface: #14171d;
    --surface-2: #1b1f27;
    --text: #e7e9ee;
    --muted: #98a1ae;
    --border: #262b35;
    --accent: #ff7a45;
    --accent-soft: #2a1a12;
    --ok: #69db7c;
    --warn: #ffb35c;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0c0e12;
  --surface: #14171d;
  --surface-2: #1b1f27;
  --text: #e7e9ee;
  --muted: #98a1ae;
  --border: #262b35;
  --accent: #ff7a45;
  --accent-soft: #2a1a12;
  --ok: #69db7c;
  --warn: #ffb35c;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 24px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 64px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

code, .mono { font-family: var(--mono); font-size: .92em; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 16px; }

/* ---------- Hero ---------- */
.hero { padding: 56px 0 28px; }
.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.08;
  letter-spacing: -.02em;
  text-wrap: balance;
}
.lede { max-width: 68ch; margin: 16px 0 28px; color: var(--muted); font-size: 17px; }
#stats { color: var(--text); font-weight: 600; }

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 190px), 1fr));
  gap: 12px;
}
.tile {
  min-width: 0;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.tile h2 {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.tile .main { margin: 0; font-size: 18px; font-weight: 650; overflow-wrap: anywhere; }
.tile .sub { margin: 2px 0 0; color: var(--muted); font-size: 13px; overflow-wrap: anywhere; }
.tile.accent { border-color: var(--accent); background: var(--accent-soft); }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

.btn {
  appearance: none;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: filter .15s, transform .15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 40%, transparent); outline-offset: 2px; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.small { padding: 6px 12px; font-size: 13px; }

/* ---------- Table of contents ---------- */
.toc {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  gap: 6px;
  padding: 10px max(16px, calc((100vw - 1240px) / 2 + 16px));
  overflow-x: auto;
  scrollbar-width: none;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.toc::-webkit-scrollbar { display: none; }
.toc a {
  flex: none;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}
.toc a:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 380px), 1fr));
  gap: 16px;
  align-items: start;
  padding-top: 20px;
  padding-bottom: 20px;
}

.card {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card.span-2 { grid-column: 1 / -1; }

.card-head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border);
}
.card-head .icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--surface-2);
  font-size: 19px;
}
.card-head h2 { margin: 0; font-size: 16px; letter-spacing: -.01em; }
.card-head .desc { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.rows { margin: 0; padding: 4px 0; }
.row {
  display: grid;
  grid-template-columns: minmax(120px, 40%) 1fr;
  gap: 4px 14px;
  padding: 8px 18px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
}
.row:last-child { border-bottom: 0; }
.row.wide { grid-template-columns: 1fr; }
.row dt { color: var(--muted); font-size: 13.5px; }
.row dt small { display: block; margin-top: 2px; font-size: 12px; opacity: .8; line-height: 1.35; }
.row dd { margin: 0; min-width: 0; overflow-wrap: anywhere; font-weight: 500; }
.row dd.mono { font-weight: 400; }

@media (max-width: 520px) {
  .row { grid-template-columns: 1fr; }
}

.na { color: var(--muted); font-style: italic; font-weight: 400; }
.warn { color: var(--warn); }
.ok { color: var(--ok); }

.chips { display: flex; flex-wrap: wrap; gap: 4px; }
.chip {
  padding: 1px 8px;
  border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 12.5px;
  font-weight: 500;
}

.loading { padding: 14px 18px; color: var(--muted); }
.loading::after {
  content: "";
  display: block;
  height: 8px;
  margin-top: 10px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--surface-2), var(--border), var(--surface-2));
  background-size: 200% 100%;
  animation: shimmer 1.2s linear infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }

.map {
  display: block;
  width: 100%;
  height: 240px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
}

.canvas-fp { display: flex; flex-direction: column; gap: 6px; }
.canvas-fp img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
}

.footer { padding-top: 12px; padding-bottom: 48px; color: var(--muted); font-size: 13px; }
.footer p { max-width: 90ch; }