/* ============ tokens ============ */
:root {
  --bg: #07070e;
  --bg2: #0b0b16;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-bright: rgba(255, 255, 255, 0.16);
  --text: #ececf4;
  --muted: #9aa0b8;
  --faint: #6b7090;
  --cyan: #34e3e8;
  --violet: #a780ff;
  --green: #46e0a0;
  --red: #ff6b80;
  --amber: #ffc54d;
  --grad: linear-gradient(110deg, var(--cyan), var(--violet));
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --display: "Space Grotesk", var(--sans);
  --r: 16px;
  --maxw: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
em { font-style: normal; color: var(--text); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ============ aurora bg ============ */
.aurora {
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(60vw 60vw at 75% -10%, rgba(167, 128, 255, 0.18), transparent 60%),
    radial-gradient(50vw 50vw at 10% 5%, rgba(52, 227, 232, 0.14), transparent 55%),
    radial-gradient(45vw 45vw at 60% 100%, rgba(70, 224, 160, 0.08), transparent 60%),
    var(--bg);
}
.aurora::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.5) 0.5px, transparent 0.5px);
  background-size: 44px 44px; opacity: 0.04;
}

/* ============ nav ============ */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 7, 14, 0.6);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; font-size: 18px; }
.brand span { color: var(--cyan); }
.nav-links { display: flex; gap: 26px; align-items: center; font-size: 14px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.nav-links .ghost { padding: 7px 14px; border: 1px solid var(--border-bright); border-radius: 999px; color: var(--text); }
.nav-links .ghost:hover { background: var(--surface-2); }

/* ============ hero ============ */
.hero { padding: 90px 24px 70px; text-align: center; }
.pill {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; color: var(--muted);
  padding: 7px 16px; border: 1px solid var(--border-bright); border-radius: 999px;
  background: var(--surface);
}
.pill strong { color: var(--green); }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero h1 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(34px, 6vw, 66px); line-height: 1.04; letter-spacing: -0.03em;
  margin: 26px 0 22px;
}
.lede { max-width: 720px; margin: 0 auto 16px; color: var(--muted); font-size: clamp(15px, 1.6vw, 18px); }
.lede.strong { color: var(--text); }
.lede b { color: var(--text); font-weight: 600; }
.cta-row { display: flex; gap: 14px; justify-content: center; margin: 32px 0 22px; flex-wrap: wrap; }
.btn {
  font-family: var(--sans); font-size: 15px; font-weight: 500; cursor: pointer;
  padding: 13px 24px; border-radius: 12px;
  border: 1px solid var(--border-bright); background: var(--surface-2); color: var(--text);
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-2px); background: var(--surface); }
.btn.primary { background: var(--grad); color: #08080f; font-weight: 600; border: none; }
.btn.primary:hover { box-shadow: 0 12px 34px rgba(167, 128, 255, 0.35); }
.btn.small { font-size: 14px; padding: 10px 18px; }
.disclaimer { font-size: 12.5px; color: var(--faint); max-width: 640px; margin: 18px auto 0; }
.disclaimer strong { color: var(--amber); }

/* ============ sections ============ */
.section { padding: 64px 24px; }
.section h2 { font-family: var(--display); font-weight: 700; font-size: clamp(26px, 4vw, 40px); letter-spacing: -0.02em; }
.section-lede { color: var(--muted); max-width: 680px; margin: 14px 0 38px; font-size: 16px; }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ why cards ============ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  padding: 26px; transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.card:hover { border-color: var(--border-bright); transform: translateY(-3px); background: var(--surface-2); }
.card-ic { font-size: 26px; margin-bottom: 12px; }
.card h3 { font-family: var(--display); font-size: 18px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 15px; }

/* ============ anatomy ============ */
.anatomy { border: 1px solid var(--border); border-radius: 22px; padding: 38px 30px; background: var(--surface); }
.chain { display: flex; align-items: stretch; justify-content: center; gap: 6px; flex-wrap: wrap; }
.node {
  flex: 1; min-width: 150px; max-width: 240px;
  border: 1px solid var(--border-bright); border-radius: 14px; padding: 18px 16px; text-align: center;
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  display: flex; flex-direction: column; gap: 5px;
}
.node.terminal { border-color: rgba(167,128,255,0.5); box-shadow: 0 0 30px rgba(167,128,255,0.12) inset; }
.node-role { font-family: var(--display); font-weight: 700; letter-spacing: 0.06em; font-size: 15px; }
.node.terminal .node-role { color: var(--violet); }
.node-sub { font-size: 12.5px; color: var(--faint); }
.flow { display: flex; align-items: center; padding: 0 4px; }
.flow-label { font-family: var(--mono); font-size: 12px; color: var(--cyan); white-space: nowrap; }

.guards { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 22px; justify-content: center; }
.guard-chip {
  font-family: var(--mono); font-size: 13px; cursor: pointer;
  padding: 9px 15px; border-radius: 999px; border: 1px solid var(--border-bright); background: var(--surface-2); color: var(--muted);
  transition: all 0.18s ease;
}
.guard-chip:hover { color: var(--text); border-color: var(--cyan); }
.guard-chip.active { background: var(--grad); color: #08080f; border: none; font-weight: 600; }
.guard-detail { border-top: 1px solid var(--border); padding-top: 22px; min-height: 96px; }
.gd-empty { color: var(--faint); font-style: italic; text-align: center; padding: 14px; }
.gd-title { font-family: var(--display); font-size: 19px; margin-bottom: 8px; }
.gd-plain { color: var(--muted); font-size: 15.5px; margin-bottom: 14px; max-width: 760px; }
.gd-vectors { display: flex; flex-wrap: wrap; gap: 8px; }
.gd-vec { font-family: var(--mono); font-size: 12px; color: var(--cyan); background: rgba(52,227,232,0.08); border: 1px solid rgba(52,227,232,0.2); padding: 4px 10px; border-radius: 7px; }

/* ============ terminal sim ============ */
.terminal-sim { border: 1px solid var(--border-bright); border-radius: 14px; overflow: hidden; background: #08080f; max-width: 760px; }
.ts-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: var(--surface); }
.tdot { width: 11px; height: 11px; border-radius: 50%; }
.tdot.r { background: #ff5f57; } .tdot.y { background: #febc2e; } .tdot.g { background: #28c840; }
.ts-title { font-family: var(--mono); font-size: 12.5px; color: var(--faint); margin-left: 6px; }
.ts-body { font-family: var(--mono); font-size: 13.5px; padding: 20px; min-height: 200px; }
.ts-line { display: flex; gap: 10px; padding: 5px 0; opacity: 0; transform: translateX(-8px); transition: opacity 0.3s ease, transform 0.3s ease; }
.ts-line.show { opacity: 1; transform: none; }
.ts-line .mark { width: 16px; }
.ts-line.ok .mark { color: var(--green); }
.ts-line.fail .mark { color: var(--red); }
.ts-line.fail { color: var(--red); }
.ts-line .note { color: var(--faint); }
.terminal-sim .btn.small { margin: 0 20px 20px; }

/* ============ matrix ============ */
.matrix-head { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; margin-bottom: 28px; }
.big-stat { display: flex; align-items: baseline; gap: 8px; }
.bs-num { font-family: var(--display); font-weight: 700; font-size: 52px; line-height: 1; }
.big-stat .bs-num { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.big-stat.alt .bs-num { background: none; -webkit-text-fill-color: var(--amber); color: var(--amber); }
.bs-of { color: var(--faint); font-size: 15px; }
.verdict { margin-left: auto; font-family: var(--display); font-weight: 600; font-size: 16px; padding: 9px 18px; border-radius: 999px; border: 1px solid var(--border-bright); }
.verdict.pass { color: var(--green); border-color: rgba(70,224,160,0.4); background: rgba(70,224,160,0.08); }

.matrix { display: flex; flex-direction: column; gap: 10px; }
.cat {
  border: 1px solid var(--border); border-radius: 14px; background: var(--surface); overflow: hidden;
  transition: border-color 0.2s ease;
}
.cat:hover { border-color: var(--border-bright); }
.cat-head { display: flex; align-items: center; gap: 16px; padding: 16px 20px; cursor: pointer; }
.cat-name { font-family: var(--mono); font-size: 14.5px; min-width: 180px; }
.cat-bar { flex: 1; height: 8px; border-radius: 999px; background: rgba(255,255,255,0.06); overflow: hidden; }
.cat-fill { height: 100%; width: 0; background: var(--grad); border-radius: 999px; transition: width 1s cubic-bezier(0.2,0.8,0.2,1); }
.cat-count { font-family: var(--mono); font-size: 13px; color: var(--muted); min-width: 92px; text-align: right; }
.cat-hard { font-family: var(--mono); font-size: 12px; color: var(--amber); min-width: 86px; text-align: right; }
.cat-caret { color: var(--faint); transition: transform 0.2s ease; }
.cat.open .cat-caret { transform: rotate(90deg); }
.cat-body { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.cat.open .cat-body { max-height: 1200px; }
.cat-vectors { padding: 4px 20px 18px; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 6px 18px; }
.vec-row { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 12.5px; padding: 3px 0; color: var(--muted); }
.vec-row .vmark { color: var(--green); }
.vec-row .vmark.fail { color: var(--red); }
.vec-tag { font-size: 10px; padding: 1px 7px; border-radius: 5px; margin-left: auto; }
.vec-tag.core { background: rgba(52,227,232,0.1); color: var(--cyan); }
.vec-tag.hardening { background: rgba(255,197,77,0.12); color: var(--amber); }
.prov { color: var(--faint); font-size: 13px; margin-top: 20px; }
.prov code { font-family: var(--mono); color: var(--muted); }
.prov a { color: var(--cyan); }

/* ============ run ============ */
.run-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.run-col { border: 1px solid var(--border); border-radius: var(--r); padding: 24px; background: var(--surface); }
.run-col h3 { font-family: var(--display); font-size: 18px; margin-bottom: 14px; }
.run-col p { color: var(--muted); font-size: 14px; margin-top: 12px; }
.run-col a { color: var(--cyan); }
.code {
  font-family: var(--mono); font-size: 13px; line-height: 1.7;
  background: #08080f; border: 1px solid var(--border); border-radius: 10px; padding: 16px;
  white-space: pre; overflow-x: auto; color: #d6d9e6;
}
.c-com { color: var(--faint); } .c-kw { color: var(--violet); } .c-str { color: var(--green); }

/* ============ glossary ============ */
.glossary { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.term { border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; background: var(--surface); }
.term dt { font-family: var(--mono); font-size: 14px; color: var(--cyan); margin-bottom: 5px; }
.term dd { color: var(--muted); font-size: 14px; }

/* ============ footer ============ */
.footer { border-top: 1px solid var(--border); padding: 40px 24px; margin-top: 40px; }
.foot-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer strong { font-family: var(--display); }
.footer p { color: var(--faint); font-size: 13px; max-width: 520px; margin-top: 6px; }
.footer a { color: var(--muted); }
.foot-links { display: flex; gap: 22px; align-items: flex-start; font-size: 14px; }
.foot-links a:hover { color: var(--text); }

/* ============ live runner ============ */
.runner { border: 1px solid var(--border-bright); border-radius: 16px; padding: 22px; background: var(--surface); margin-bottom: 14px; }
.runner-row { display: flex; gap: 12px; }
.url-input {
  flex: 1; font-family: var(--mono); font-size: 14px; color: var(--text);
  background: #08080f; border: 1px solid var(--border-bright); border-radius: 11px; padding: 13px 16px;
  outline: none; transition: border-color 0.18s ease;
}
.url-input:focus { border-color: var(--cyan); }
.runner-out { margin-top: 18px; }
.runner-status { font-family: var(--mono); font-size: 13.5px; color: var(--muted); padding: 14px; }
.runner-status code { color: var(--cyan); }
.runner-status.err { color: var(--amber); line-height: 1.8; }
.runner-status .dim { color: var(--faint); }
.runner-head { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 14px 16px; border-radius: 11px; border: 1px solid var(--border); background: var(--surface-2); margin-bottom: 14px; }
.runner-head.pass { border-color: rgba(70,224,160,0.35); }
.runner-head.fail { border-color: rgba(255,107,128,0.35); }
.runner-head.warn { border-color: rgba(255,197,77,0.4); }
.rh-verdict { font-family: var(--display); font-weight: 600; font-size: 15px; }
.runner-head.pass .rh-verdict { color: var(--green); }
.runner-head.fail .rh-verdict { color: var(--red); }
.runner-head.warn .rh-verdict { color: var(--amber); }
.rh-counts { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.rh-target { font-family: var(--mono); font-size: 12px; color: var(--faint); margin-left: auto; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.runner-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 4px 18px; }
.runner-note { color: var(--faint); font-size: 12.5px; margin-top: 14px; }
.share { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--border); }
.share-row { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.share-k { font-size: 12.5px; color: var(--faint); min-width: 96px; }
.share-v { font-family: var(--mono); font-size: 12px; color: var(--muted); background: #08080f; border: 1px solid var(--border); border-radius: 7px; padding: 6px 10px; flex: 1; min-width: 200px; overflow-x: auto; white-space: nowrap; }
.btn.copy { padding: 6px 12px; font-size: 12px; }
.share-badge { margin-top: 10px; }
.share-badge img { height: 20px; vertical-align: middle; }
h3.sub { font-family: var(--display); font-size: 19px; margin: 38px 0 6px; color: var(--text); }

/* ============ responsive ============ */
@media (max-width: 820px) {
  .cards, .run-grid { grid-template-columns: 1fr; }
  .nav-links { gap: 16px; font-size: 13px; }
  .nav-links a:not(.ghost) { display: none; }
  .flow { transform: rotate(90deg); padding: 6px 0; }
  .chain { flex-direction: column; align-items: center; }
  .node { max-width: 100%; width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { scroll-behavior: auto; }
}