/* Design tokens: teal operator palette, light and dark. Fonts: Inter, JetBrains Mono. */
:root {
  --ground: #EFF3F2;
  --surface: #FFFFFF;
  --surface-2: #F6F9F8;
  --line: #DBE3E1;
  --line-strong: #C2CECB;
  --ink: #101816;
  --ink-2: #3B4946;
  --muted: #5A6966;
  --accent: #0B6A6C;
  --accent-soft: #DBEDEC;
  --accent-ink: #064F51;
  --on-accent: #FFFFFF;
  --shadow: 0 1px 2px rgb(16 24 22 / 0.05), 0 8px 24px -18px rgb(16 24 22 / 0.35);
  --mark-from: #0B6A6C;
  --mark-to: #2E6FC0;
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius-card: 10px;
  --radius-control: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0D1211;
    --surface: #141B1A;
    --surface-2: #19211F;
    --line: #26312F;
    --line-strong: #35423F;
    --ink: #E8EDEB;
    --ink-2: #BCC8C5;
    --muted: #93A19E;
    --accent: #4FB3B0;
    --accent-soft: #16302F;
    --accent-ink: #8FD3D0;
    --on-accent: #08110F;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.45), 0 12px 28px -20px rgb(0 0 0 / 0.85);
    --mark-from: #4FB3B0;
    --mark-to: #5B9BE0;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

a { color: var(--accent-ink); }
a:focus-visible, .cta:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: 0.5rem 1rem; }
.skip:focus { left: 0; z-index: 10; }

/* Top nav */
.top-nav { border-bottom: 1px solid var(--line); }
.top-nav .wrap { display: flex; align-items: center; gap: 16px; padding-top: 18px; padding-bottom: 14px; flex-wrap: wrap; }
.brand-row { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 15px; color: var(--ink); text-decoration: none; }
.brand-mark {
  width: 24px; height: 24px; border-radius: 5px; flex: none;
  background: linear-gradient(135deg, var(--mark-from), var(--mark-to));
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 4px;
  border: 1.5px solid rgb(255 255 255 / 0.7); border-bottom: 0; border-right: 0; border-radius: 2px;
}
.links { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.links a {
  padding: 6px 12px; font-size: 13px; color: var(--muted);
  text-decoration: none; border: 1px solid transparent; border-radius: var(--radius-control);
}
.links a:hover { color: var(--ink); background: var(--surface); border-color: var(--line); }
.links a.primary { background: var(--accent-soft); border-color: var(--line-strong); color: var(--accent-ink); }

/* Hero */
.hero { padding: 72px 0 48px; display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero > * { min-width: 0; }
.hero-tag {
  display: inline-block; padding: 4px 12px; margin-bottom: 20px;
  background: var(--accent-soft); border: 1px solid var(--line-strong); color: var(--accent-ink);
  font-family: var(--font-mono); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.08em;
  border-radius: 5px;
}
.hero h1 { font-size: clamp(2.4rem, 8vw, 3.5rem); font-weight: 700; line-height: 1.05; letter-spacing: -0.025em; margin: 0 0 16px; }
.lede { font-size: 17px; line-height: 1.55; color: var(--ink-2); margin: 0 0 24px; max-width: 34rem; }
.ctas { display: flex; gap: 10px; flex-wrap: wrap; }
.cta {
  display: inline-flex; align-items: center; padding: 10px 18px; font-size: 14px; font-weight: 600;
  border-radius: var(--radius-control); text-decoration: none;
  background: var(--accent); color: var(--on-accent); border: 1px solid var(--accent);
}
.cta:hover { filter: brightness(1.08); }

.hero-art {
  background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: var(--radius-card); box-shadow: var(--shadow); overflow: hidden;
}
.hero-art .bar { display: flex; align-items: center; gap: 6px; padding: 9px 12px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.hero-art .dots { display: flex; gap: 5px; }
.hero-art .dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.hero-art .bar .t { font-family: var(--font-mono); font-size: 11px; color: var(--muted); margin-left: 8px; }
.row {
  display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: baseline;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-2);
}
.row .v { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.row.hl { background: var(--accent-soft); }
.hero-art .foot { padding: 10px 14px; font-family: var(--font-mono); font-size: 11px; color: var(--muted); }

/* Sections */
section { padding: 56px 0 8px; border-top: 1px solid var(--line); }
.eyebrow { font-family: var(--font-mono); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-ink); margin: 0 0 8px; }
h2 { font-size: clamp(1.5rem, 4vw, 1.9rem); font-weight: 700; letter-spacing: -0.015em; line-height: 1.2; margin: 0 0 12px; }
h3 { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; margin: 0 0 8px; line-height: 1.3; }
p { margin: 0 0 14px; }
.intro { color: var(--ink-2); max-width: 44rem; font-size: 16px; margin-bottom: 28px; }

/* Pillars (what it is) */
.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr)); gap: 14px; list-style: none; padding: 0; margin: 0; }
.pillar { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card); padding: 22px 20px; box-shadow: var(--shadow); }
.pillar .pico {
  width: 36px; height: 36px; display: grid; place-items: center; margin-bottom: 14px;
  background: var(--surface-2); border: 1px solid var(--line-strong); border-radius: 6px;
  color: var(--accent-ink); font-family: var(--font-mono); font-size: 16px;
}
.pillar p { margin: 0; font-size: 14px; color: var(--ink-2); }

/* Incident cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr)); gap: 16px; list-style: none; padding: 0; margin: 0; }
.card {
  position: relative; overflow: hidden; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-card); padding: 22px 18px 18px; box-shadow: var(--shadow);
}
.card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent); }
.card p { font-size: 14px; color: var(--ink-2); margin: 0 0 10px; }
.card p:last-child { margin-bottom: 0; }
.label { display: block; font-family: var(--font-mono); font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 2px; }
.tag { font-family: var(--font-mono); font-size: 11px; color: var(--muted); }

/* Numbers */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 9rem), 1fr)); gap: 12px; margin: 0; }
.stat { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card); padding: 16px; }
.stat dd { margin: 0; font-size: 22px; font-weight: 700; line-height: 1.15; font-variant-numeric: tabular-nums; }
.stat dt { order: 2; font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.note { color: var(--muted); font-size: 13px; margin-top: 14px; }

/* Open problems */
.problems { list-style: none; counter-reset: p; padding: 0; margin: 0; display: grid; gap: 12px; max-width: 48rem; }
.problems li {
  counter-increment: p; position: relative; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-card); padding: 14px 16px 14px 52px; font-size: 14px; color: var(--ink-2);
}
.problems li::before {
  content: counter(p, decimal-leading-zero); position: absolute; left: 16px; top: 15px;
  font-family: var(--font-mono); font-size: 12px; color: var(--accent-ink);
}
.problems strong { color: var(--ink); }

/* Footer */
footer { margin-top: 56px; border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 13px; }
footer p { margin: 0; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; gap: 32px; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 12px; }
  .links { margin-left: 0; width: 100%; }
}
@media (prefers-reduced-motion: no-preference) {
  .cta { transition: filter 150ms cubic-bezier(0.2, 0.6, 0.2, 1); }
}