:root {
  --bg: #fbf8f6;
  --surface: #ffffff;
  --surface-2: #f6efea;
  --text: #17110f;
  --muted: #64574f;
  --line: #ece2db;
  /* KOC brand orange #ea3c12; a darker shade keeps text and buttons at AA contrast on light. */
  --brand: #ea3c12;
  --accent: #c3300c;
  --accent-2: #f08a24;
  --accent-3: #9f1d0a;
  --accent-soft: #fde9e1;
  --code-bg: #0c0c21;
  --code-text: #d7e3ee;
  --warn-bg: #fff7e6;
  --warn-line: #f3d08a;
  --shadow: 0 1px 2px rgba(15, 23, 32, 0.04), 0 8px 24px rgba(15, 23, 32, 0.06);
  --radius: 14px;
  --max: 1040px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0c21;
    --surface: #14142e;
    --surface-2: #1b1b3a;
    --text: #f1eeee;
    --muted: #a8a3b8;
    --line: #2a2a4a;
    --brand: #ea3c12;
    --accent: #ff6a3d;
    --accent-2: #ffa94d;
    --accent-3: #ff3d5a;
    --accent-soft: #3a1a17;
    --code-bg: #07071a;
    --code-text: #d7e3ee;
    --warn-bg: #2a2310;
    --warn-line: #5a4719;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { overflow-x: clip; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-2); }
code, pre { font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.88em; }
code { background: var(--surface-2); border: 1px solid var(--line); padding: 0.08em 0.38em; border-radius: 6px; overflow-wrap: anywhere; }
pre { background: var(--code-bg); color: var(--code-text); padding: 16px 18px; border-radius: 12px; overflow-x: auto; line-height: 1.5; box-shadow: var(--shadow); }
pre code { background: none; border: 0; padding: 0; color: inherit; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.flush { margin: 0; }

/* Header */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.brand img { width: 30px; height: 30px; margin-right: 10px; border-radius: 50%; box-shadow: 0 4px 14px color-mix(in srgb, var(--brand) 35%, transparent); }
.brand { display: inline-flex; align-items: center; font-weight: 800; font-size: 1.15rem; color: var(--text); text-decoration: none; letter-spacing: -0.02em; }
.brand span { color: var(--accent); }
nav a { margin-left: 20px; color: var(--muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
nav a:first-child { margin-left: 0; }
nav a:hover { color: var(--text); }

/* Hero */
.hero { position: relative; padding: 72px 0 56px; }
.hero::before {
  content: ""; position: absolute; top: -40px; bottom: 0; left: calc(50% - 50vw); right: calc(50% - 50vw); z-index: -1;
  background:
    radial-gradient(600px 300px at 15% 10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
    radial-gradient(500px 280px at 85% 0%, color-mix(in srgb, var(--accent-2) 20%, transparent), transparent 70%),
    radial-gradient(400px 260px at 60% 90%, color-mix(in srgb, var(--accent-3) 14%, transparent), transparent 70%);
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 40px; align-items: center; }
.hero-grid > * { min-width: 0; }
.hero h1 {
  font-size: clamp(2rem, 4.8vw, 3.2rem); line-height: 1.08; margin: 0 0 18px; letter-spacing: -0.035em; font-weight: 800;
}
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2) 55%, var(--accent-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: 1.14rem; color: var(--muted); max-width: 600px; margin: 0 0 26px; }
.status {
  display: inline-flex; align-items: center; gap: 8px; font-size: 0.82rem; font-weight: 600;
  padding: 5px 12px; border-radius: 999px; margin-bottom: 20px;
  background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 25%, transparent); }
.btn { display: inline-block; padding: 12px 20px; border-radius: 10px; text-decoration: none; font-weight: 650; margin: 0 10px 10px 0; transition: transform .15s ease, box-shadow .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: linear-gradient(135deg, #d4360f, #b52c0b); color: #fff; box-shadow: 0 8px 22px color-mix(in srgb, var(--accent) 35%, transparent); }
.btn.primary:hover { color: #fff; }
.btn.ghost { background: var(--surface); border: 1px solid var(--line); color: var(--text); box-shadow: var(--shadow); }

/* Terminal card */
.term { background: var(--code-bg); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; border: 1px solid color-mix(in srgb, var(--line) 50%, #000); }
.term-bar { display: flex; gap: 7px; padding: 12px 14px; background: color-mix(in srgb, var(--code-bg) 80%, #333); }
.term-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.term-bar i:nth-child(2) { background: #febc2e; }
.term-bar i:nth-child(3) { background: #28c840; }
.term pre { margin: 0; border-radius: 0; box-shadow: none; font-size: 0.82rem; }
.t-dim { color: #7d8a97; }
.t-green { color: #4ade80; }
.t-amber { color: #fbbf24; }
.t-blue { color: #7dd3fc; }
.t-violet { color: #c4b5fd; }

/* Sections */
section { padding: 56px 0; }
section + section { border-top: 1px solid var(--line); }
.eyebrow { display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
section h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 18px; letter-spacing: -0.025em; }
h3 { font-size: 1.08rem; margin: 22px 0 8px; letter-spacing: -0.01em; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.card {
  position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 20px 18px; box-shadow: var(--shadow); transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; border-radius: var(--radius) var(--radius) 0 0; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.card:nth-child(2)::before { background: linear-gradient(90deg, var(--accent-2), var(--accent-3)); }
.card:nth-child(3)::before { background: linear-gradient(90deg, var(--accent-3), var(--accent)); }
.card:nth-child(4)::before { background: linear-gradient(90deg, var(--accent), var(--accent-3)); }
.card h3 { margin-top: 2px; }
.card p { margin: 0; color: var(--muted); }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.steps li { counter-increment: s; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 52px 18px 18px; position: relative; box-shadow: var(--shadow); }
.steps li::before {
  content: counter(s); position: absolute; left: 18px; top: 16px; width: 28px; height: 28px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-weight: 800; font-size: 0.85rem;
  display: flex; align-items: center; justify-content: center;
}

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
table { border-collapse: collapse; width: 100%; font-size: 0.93rem; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td, tr:last-child th { border-bottom: 0; }
thead th { background: var(--surface-2); color: var(--muted); font-weight: 650; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap; }
tbody tr:hover { background: color-mix(in srgb, var(--accent-soft) 45%, transparent); }
td code { white-space: nowrap; }
td:last-child { font-variant-numeric: tabular-nums; }
.price { font-weight: 700; color: var(--accent); }

.callout {
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, var(--surface)), color-mix(in srgb, var(--accent-3) 10%, var(--surface)));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line)); border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow);
}
.callout p { margin: 0; }
.note { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: var(--radius); padding: 16px 20px; }

/* Whitepaper */
article.paper { padding: 48px 0 24px; max-width: 820px; margin: 0 auto; }
article.paper h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); line-height: 1.15; margin: 0 0 8px; letter-spacing: -0.03em; }
article.paper h2 { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 1.4rem; letter-spacing: -0.02em; }
article.paper .meta { color: var(--muted); margin-bottom: 28px; }
article.paper p, article.paper li { color: color-mix(in srgb, var(--text) 88%, var(--muted)); }
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 22px; box-shadow: var(--shadow); }
.toc ol { margin: 8px 0 0; padding-left: 22px; columns: 2; column-gap: 32px; }
.toc a { text-decoration: none; }
.flow { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 14px 0; }
.flow span { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 7px 12px; font-size: 0.9rem; box-shadow: var(--shadow); }
.flow b { color: var(--accent); font-weight: 700; }

footer.site { border-top: 1px solid var(--line); padding: 28px 0 44px; color: var(--muted); font-size: 0.88rem; }

@media (max-width: 820px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .toc ol { columns: 1; }
}
@media (max-width: 640px) {
  /* Tables become one card per row on phones. */
  .table-wrap { overflow: visible; }
  .table-wrap table, .table-wrap tbody, .table-wrap tr, .table-wrap td, .table-wrap th { display: block; }
  .table-wrap thead { display: none; }
  .table-wrap tr { padding: 12px 16px; border-bottom: 1px solid var(--line); }
  .table-wrap tr:last-child { border-bottom: 0; }
  .table-wrap td, .table-wrap th { border: 0; padding: 2px 0; }
  .table-wrap tbody th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
  td code { white-space: normal; }
}
@media (max-width: 560px) {
  nav a { margin-left: 14px; }
  .hero { padding: 44px 0 36px; }
  section { padding: 40px 0; }
}
.bases { margin-bottom: 8px; }
.bases .card { padding: 14px 18px; }
.bases h3 { margin: 0 0 4px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }

/* Brand touches */
.callout.kc { display: flex; gap: 18px; align-items: flex-start; }
.callout.kc img { flex: 0 0 auto; border-radius: 50%; }
.foot { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.foot-logo { height: 40px; width: auto; }
.term-bar { border-bottom: 1px solid #1d1d3d; }
@media (max-width: 560px) {
  .callout.kc { flex-direction: column; }
}