/* Pareto marketing site — "the observed page" design system.
   The site presents itself as a live trace under Pareto observation: an
   observer rail tracks scroll like an execution timeline, sections read as
   log entries, and the page gets scored. Identity matches the product
   dashboard: signal green #00ff94 on green-tinted blacks, mono instrument
   type. Self-contained — no external fonts, images, or scripts. */

:root {
  --bg: #050807;            /* green-tinted near-black, not zinc */
  --bg-elev: #080d0a;
  --card: #0a110d;
  --card-hover: #0d1510;
  --border: #16211b;
  --border-strong: #24332a;
  --grid-line: rgba(0, 255, 148, 0.035);
  --text: #f2f7f4;
  --muted: #9fb3a8;
  --faint: #5f7268;
  --green: #00ff94;         /* the dashboard's actual signal green */
  --green-soft: rgba(0, 255, 148, 0.09);
  --green-border: rgba(0, 255, 148, 0.28);
  --yellow: #ffd60a;
  --yellow-soft: rgba(255, 214, 10, 0.10);
  --red: #ff453a;
  --red-soft: rgba(255, 69, 58, 0.10);
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --rail-w: 216px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; overflow-x: clip; }

/* hash jumps land below the sticky nav */
.section, .hero { scroll-margin-top: 70px; }

body {
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 100% 56px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 56px 100%,
    radial-gradient(1200px 700px at 75% -10%, rgba(0, 255, 148, 0.05), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

::selection { background: rgba(0, 255, 148, 0.3); color: #04130c; }

code, pre { font-family: var(--mono); }

/* ---------- primitives ---------- */

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 28px; }

/* Leave air for the observer rail on wide screens. */
@media (min-width: 1240px) {
  .wrap { padding-right: calc(var(--rail-w) + 28px); }
  .nav .wrap { padding-right: 28px; }
}

.micro {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
}

.micro.green { color: var(--green); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.btn-primary {
  background: var(--green);
  color: #03130b;
}
.btn-primary:hover { background: #33ffab; }

.btn-ghost { border-color: var(--border-strong); color: var(--text); background: rgba(5, 8, 7, 0.5); }
.btn-ghost:hover { border-color: var(--green-border); color: var(--green); }

/* ---------- cards: instrument panels with viewfinder brackets ---------- */

.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
}

.card.corner::before,
.card.corner::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  transition: border-color 0.2s;
}
.card.corner::before {
  top: -1px; left: -1px;
  border-top: 1px solid var(--border-strong);
  border-left: 1px solid var(--border-strong);
}
.card.corner::after {
  bottom: -1px; right: -1px;
  border-bottom: 1px solid var(--border-strong);
  border-right: 1px solid var(--border-strong);
}
.card.corner:hover::before,
.card.corner:hover::after { border-color: var(--green); }

.feature { padding: 26px 24px; transition: background 0.15s, border-color 0.15s; }
.feature:hover { background: var(--card-hover); border-color: var(--border-strong); }

.feature .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: 0.14em;
}

.feature h3 { font-family: var(--mono); font-size: 16.5px; margin-top: 12px; letter-spacing: -0.01em; }
.feature p { margin-top: 9px; font-size: 14px; color: var(--muted); }
.feature .q { color: var(--faint); font-size: 13px; margin-top: 7px; }

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(5, 8, 7, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner { display: flex; align-items: center; gap: 26px; height: 58px; }

.brand { display: flex; align-items: center; gap: 10px; }

.brand-mark {
  width: 11px; height: 11px;
  background: var(--green);
}

.brand-name { font-family: var(--mono); font-weight: 700; font-size: 15px; letter-spacing: 0.1em; }

.brand-sub {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--faint);
}

.nav-links { display: flex; gap: 20px; margin-left: auto; align-items: center; }

.nav-links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--green); }

.nav .btn { padding: 8px 16px; font-size: 12px; }
.nav-links a.btn-primary { color: #03130b; }
.nav-links a.btn-primary:hover { color: #03130b; }

@media (max-width: 800px) {
  .nav-links a:not(.keep) { display: none; }
}

/* ---------- detector ticker ---------- */

.ticker {
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  overflow: hidden;
  white-space: nowrap;
}
.ticker-track {
  display: inline-block;
  padding: 8px 0;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--faint);
  opacity: 0.75;
  animation: ticker 70s linear infinite;
}
.ticker-track .sep { margin: 0 16px; color: var(--border-strong); }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- hero ---------- */

.hero { position: relative; padding: 96px 0 84px; border-bottom: 1px solid var(--border); overflow: hidden; }

.hero h1 {
  font-family: var(--mono);
  font-size: clamp(38px, 6.2vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 700;
  max-width: 900px;
  text-wrap: balance;
}

.hero h1 .accent { color: var(--green); }

/* staggered mask reveal for the headline lines */
.hero h1 .hl { display: inline-block; overflow: hidden; vertical-align: bottom; }
html.js .hero h1 .hl-in {
  display: inline-block;
  transform: translateY(110%);
  animation: hl-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes hl-up { to { transform: translateY(0); } }
.hero .lede { margin-top: 26px; max-width: 640px; color: var(--muted); font-size: 17.5px; }

.hero-ctas { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }

/* telemetry strip */
.telemetry {
  display: flex;
  flex-wrap: wrap;
  margin-top: 64px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
}
.telemetry .cell {
  flex: 1 1 150px;
  padding: 18px 20px 16px;
  border-right: 1px solid var(--border);
  position: relative;
}
.telemetry .cell:last-child { border-right: none; }
.telemetry b {
  display: block;
  font-family: var(--mono);
  font-size: 26px;
  letter-spacing: -0.02em;
  color: var(--text);
}
.telemetry b .unit { font-size: 14px; color: var(--green); }
.telemetry span {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}

@keyframes blink { 50% { opacity: 0; } }

/* ---------- terminal ---------- */

.terminal {
  background: #040705;
  border: 1px solid var(--border-strong);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
}

.terminal-bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--border-strong); display: inline-block; }

.terminal-bar .title { margin-left: 10px; font-family: var(--mono); font-size: 11px; color: var(--faint); letter-spacing: 0.04em; }

.terminal-body {
  padding: 20px 22px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.9;
  min-height: 300px;
  white-space: pre-wrap;
  word-break: break-word;
}

.terminal-body .dim { color: var(--faint); }
.terminal-body .ok { color: var(--green); }
.terminal-body .warn { color: var(--yellow); }
.terminal-body .bad { color: var(--red); }

.cursor {
  display: inline-block;
  width: 7px; height: 14px;
  background: var(--green);
  vertical-align: -2px;
  animation: blink 1s steps(1) infinite;
}

/* ---------- sections as trace log entries ---------- */

.section { position: relative; padding: 92px 0; border-bottom: 1px solid var(--border); }
.section:last-of-type { border-bottom: none; }

.log-head { position: relative; margin-bottom: 44px; }

.log-line {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--faint);
  margin-bottom: 18px;
}
.log-line .ts { color: var(--green); }
.log-line .lead { flex: 0 0 26px; height: 1px; background: var(--border-strong); }
.log-line .tag {
  border: 1px solid var(--border-strong);
  padding: 2px 8px;
  text-transform: uppercase;
}
.log-line .status { margin-left: auto; color: var(--faint); }
.log-line .status.scored { color: var(--green); }

.log-head h2 {
  font-family: var(--mono);
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.035em;
  max-width: 720px;
  text-wrap: balance;
}

.log-head .sub { margin-top: 14px; color: var(--muted); font-size: 16px; max-width: 620px; }

/* ghosted section numeral */
.section .ghost-num {
  position: absolute;
  top: 34px;
  right: 12px;
  font-family: var(--mono);
  font-size: clamp(90px, 14vw, 190px);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 255, 148, 0.055);
  pointer-events: none;
  user-select: none;
}

/* ---------- grids ---------- */

.grid { display: grid; gap: 14px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 880px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* ---------- chips / badges ---------- */

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  font-family: var(--mono);
  font-size: 12px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--card);
  transition: border-color 0.15s, color 0.15s;
}
.chip:hover { border-color: var(--green-border); color: var(--green); }
.chip.hl { color: var(--green); border-color: var(--green-border); background: var(--green-soft); }

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 3px 9px;
  border: 1px solid;
}

.badge.high, .badge.critical { color: var(--red); border-color: rgba(255, 69, 58, 0.45); background: var(--red-soft); }
.badge.medium { color: var(--yellow); border-color: rgba(255, 214, 10, 0.45); background: var(--yellow-soft); }
.badge.low { color: var(--muted); border-color: var(--border-strong); background: transparent; }
.badge.green { color: var(--green); border-color: var(--green-border); background: var(--green-soft); }

/* ---------- risk cards ---------- */

.risk-card { padding: 20px 22px; }
.risk-card .rc-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.risk-card .rc-cat { font-family: var(--mono); font-size: 13px; font-weight: 700; }
.risk-card p { font-size: 13.5px; color: var(--muted); margin-top: 9px; }
.risk-card .rc-evidence {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  margin-top: 10px;
  border-left: 2px solid var(--border-strong);
  padding-left: 12px;
  word-break: break-word;
}
.risk-card .rc-fix { color: var(--green); font-size: 13px; margin-top: 12px; }

/* ---------- pipeline as horizontal trace ---------- */

.pipeline { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: step; }

.pipe-step {
  position: relative;
  padding: 26px 20px 24px 22px;
  border: 1px solid var(--border);
  border-left: none;
  background: var(--card);
}
.pipe-step:first-child { border-left: 1px solid var(--border); }

.pipe-step::before {
  content: "";
  position: absolute;
  top: 33px; left: -5px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--green);
  z-index: 1;
}
.pipe-step:first-child::before { display: none; }

.pipe-step .num { font-family: var(--mono); font-size: 10.5px; color: var(--green); letter-spacing: 0.14em; }
.pipe-step h3 { font-family: var(--mono); font-size: 15.5px; margin-top: 10px; }
.pipe-step p { font-size: 12.5px; color: var(--muted); margin-top: 7px; }

@media (max-width: 980px) {
  .pipeline { grid-template-columns: 1fr; }
  .pipe-step { border-left: 1px solid var(--border); border-top: none; }
  .pipe-step:first-child { border-top: 1px solid var(--border); }
  .pipe-step::before { top: -5px; left: 30px; }
}

/* ---------- code block ---------- */

.codeblock {
  background: #040705;
  border: 1px solid var(--border);
  padding: 20px 22px;
  font-size: 13px;
  line-height: 1.75;
  overflow-x: auto;
  white-space: pre;
}

.codeblock.typed { white-space: normal; }
.codeblock .cb-line { white-space: pre; min-height: 1.2em; }
html.js .codeblock .cb-line { opacity: 0; transform: translateX(-6px); transition: opacity 0.28s ease, transform 0.28s ease; }
html.js .codeblock .cb-line.on { opacity: 1; transform: none; }
/* a caret rides the last typed line until the block finishes */
html.js .codeblock:not(.done) .cb-line.on:last-of-type::after,
html.js .codeblock .cb-line.on:has(+ .cb-line:not(.on))::after {
  content: "";
  display: inline-block;
  width: 7px; height: 1em;
  background: var(--green);
  vertical-align: -0.15em;
  margin-left: 3px;
  animation: blink 0.8s steps(1) infinite;
}
html.js .codeblock.done .cb-line::after { display: none; }

.codeblock .c { color: var(--faint); }
.codeblock .k { color: #7dd3fc; }
.codeblock .s { color: var(--yellow); }
.codeblock .g { color: var(--green); }
.codeblock .bad { color: var(--red); }

/* ---------- tabs ---------- */

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); }

.tab {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  padding: 11px 18px;
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab:hover { color: var(--muted); }
.tab.active { color: var(--green); border-bottom-color: var(--green); }

/* ---------- observer rail ---------- */

.observer {
  position: fixed;
  top: 90px;
  right: 22px;
  width: var(--rail-w);
  z-index: 50;
  font-family: var(--mono);
  border: 1px solid var(--border);
  background: rgba(5, 8, 7, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: none;
}

@media (min-width: 1240px) { .observer { display: block; } }

.observer-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--faint);
}
.observer-head .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
}

.observer-body { padding: 12px 14px 14px; position: relative; }

.observer-line {
  position: absolute;
  left: 19px; top: 18px; bottom: 18px;
  width: 1px;
  background: var(--border-strong);
}
.observer-line .fill {
  position: absolute;
  top: 0; left: 0; width: 100%;
  height: 0%;
  background: var(--green);
  transition: height 0.15s linear;
}

.observer-step {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 5px 0 5px 18px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--faint);
  cursor: pointer;
}
.observer-step .node {
  position: absolute;
  left: 2px; top: 9px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.observer-step .score { margin-left: auto; color: var(--border-strong); font-size: 10px; }
.observer-step.done { color: var(--muted); }
.observer-step.done .node { background: var(--green); border-color: var(--green); }
.observer-step.done .score { color: var(--green); }
.observer-step.active { color: var(--text); }
.observer-step.active .node { border-color: var(--green); }
.observer-step.risk.done .node { background: var(--red); border-color: var(--red); }
.observer-step.risk.done .score { color: var(--red); }

.observer-foot {
  border-top: 1px solid var(--border);
  padding: 9px 14px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--faint);
  display: flex;
  justify-content: space-between;
}
.observer-foot .val { color: var(--green); }

/* risk toast */
.risk-toast {
  position: fixed;
  bottom: 26px;
  right: 22px;
  z-index: 70;
  max-width: 320px;
  background: rgba(5, 8, 7, 0.95);
  border: 1px solid rgba(255, 69, 58, 0.5);
  padding: 14px 16px;
  font-family: var(--mono);
  transform: translateY(24px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.risk-toast.show { opacity: 1; transform: none; }
.risk-toast .rt-head { display: flex; gap: 8px; align-items: center; font-size: 10px; letter-spacing: 0.14em; color: var(--red); }
.risk-toast p { margin-top: 7px; font-size: 12px; color: var(--muted); line-height: 1.55; }

/* ---------- session-scored stamp ---------- */

.stamp-wrap { display: flex; align-items: center; justify-content: center; gap: 40px; flex-wrap: wrap; }

.stamp {
  position: relative;
  width: 168px; height: 168px;
  flex: 0 0 auto;
}
.stamp svg { transform: rotate(-90deg); }
.stamp .stamp-num {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-family: var(--mono);
}
.stamp .stamp-num b { font-size: 44px; letter-spacing: -0.03em; }
.stamp .stamp-num span { font-size: 9px; letter-spacing: 0.2em; color: var(--faint); text-transform: uppercase; }

/* ---------- flow strip ---------- */

.flow-strip {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  padding: 16px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
}
.flow-strip b { color: var(--text); font-weight: 600; }
.flow-strip .arrow { color: var(--green); }

/* ---------- score bars (shared with demo page) ---------- */

.scorebar { display: grid; grid-template-columns: 150px 1fr 34px; gap: 12px; align-items: center; }
.scorebar + .scorebar { margin-top: 12px; }
.scorebar .sb-label { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.scorebar .sb-track { height: 5px; background: var(--border); overflow: hidden; }
.scorebar .sb-fill { height: 100%; background: var(--green); }
.scorebar .sb-fill.mid { background: var(--yellow); }
.scorebar .sb-fill.low { background: var(--red); }
.scorebar .sb-val { font-family: var(--mono); font-size: 12px; text-align: right; }

.ring-wrap { position: relative; width: 108px; height: 108px; }
.ring-wrap svg { transform: rotate(-90deg); }
.ring-wrap .ring-num {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 28px; font-weight: 700; letter-spacing: -0.02em;
}

/* ---------- footer ---------- */

footer { padding: 56px 0; border-top: 1px solid var(--border); }

.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

.footer-links { display: flex; gap: 20px; }
.footer-links a { font-family: var(--mono); font-size: 12px; color: var(--faint); }
.footer-links a:hover { color: var(--green); }

.footnote { font-size: 12px; color: var(--faint); margin-top: 8px; }

/* ---------- reveal (JS-gated so no-JS renders everything) ---------- */

html.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.55s ease, transform 0.55s ease; }
html.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; transition: none; transition-delay: 0s !important; }
  html.js .hero h1 .hl-in { animation: none; transform: none; }
  html.js .codeblock .cb-line { opacity: 1; transform: none; transition: none; }
  html.js .codeblock .cb-line::after { display: none; }
  .cursor { animation: none; }
  .ticker-track { animation: none; }
  html { scroll-behavior: auto; }
}