/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
button { font-family: inherit; }

:root {
  --bg: #0e0d0c;
  --bg-alt: #131211;
  --bg-elev: #1a1816;
  --bg-card: #15130f;
  --fg: #e8e6e3;
  --fg-mute: #9a948e;
  --fg-dim: #6b6660;
  --accent: #d9c79a;
  --accent-dim: #8b7c52;
  --accent-soft: #3a3322;
  --ok: #6dbf7e;
  --warn: #d4a14a;
  --err: #c96a5a;
  --info: #8db4e2;
  --api-amazon: #e0a96d;
  --api-ads: #cf9ad7;
  --api-ext: #88c5a3;
  --db: #7fb88e;
  --logic: #b09fd8;
  --dash: #8db4e2;
  --border: #26221f;
  --border-soft: #1c1916;
  --border-strong: #3a342f;
  --radius: 6px;
  --radius-lg: 14px;
  --shadow-card: 0 1px 0 rgba(255,255,255,0.02), 0 12px 30px -10px rgba(0,0,0,0.45);
  --font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Charter", "Georgia", serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.15s ease, border-color 0.15s ease;
}
a:hover { color: var(--accent); border-color: var(--accent-dim); }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fg);
}
h1 { font-size: 2.4rem; line-height: 1.15; margin: 0 0 1.5rem; }
h2 { font-size: 2rem; line-height: 1.22; margin: 0 0 1.4rem; }
h3 { font-size: 1.3rem; line-height: 1.3; margin: 2.2rem 0 1rem; }
h4 { font-size: 1.05rem; line-height: 1.35; margin: 0 0 0.5rem; letter-spacing: 0; }
.huge {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  margin: 0 0 2rem;
}
.hh { margin-top: 4rem; font-size: 1.55rem; }

p { margin: 0 0 1rem; max-width: 70ch; }
.lede {
  font-size: 1.13rem;
  color: var(--fg-mute);
  max-width: 60ch;
  margin-bottom: 2rem;
  line-height: 1.6;
}
.muted { color: var(--fg-mute); }
.kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--accent-dim);
  text-transform: uppercase;
  margin: 0 0 1rem;
}
strong { color: var(--fg); font-weight: 600; }
em { color: var(--fg); font-style: italic; }
code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-elev);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--accent);
}
pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--fg-mute);
  margin: 1rem 0 0;
}
pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* ============ LAYOUT ============ */
.container { max-width: 1160px; margin: 0 auto; padding: 0 1.5rem; }
.container.narrow { max-width: 820px; }
.section {
  padding: 6rem 0;
  border-top: 1px solid var(--border-soft);
}
.band {
  padding: 5rem 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border-soft);
}
.row { display: flex; align-items: center; gap: 1rem; }
.spread { justify-content: space-between; }

/* ============ GATE ============ */
.gate {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); z-index: 100;
}
.gate-inner { text-align: center; max-width: 360px; padding: 2rem; }
.gate-inner h1 { font-size: 1.75rem; margin: 1rem 0 0.5rem; }
.gate-inner form { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1.5rem; }
.gate-inner input {
  background: var(--bg-elev); border: 1px solid var(--border); color: var(--fg);
  padding: 0.75rem 1rem; border-radius: var(--radius); font-size: 1rem; font-family: inherit;
  text-align: center;
}
.gate-inner input:focus { outline: none; border-color: var(--accent-dim); }
.gate-inner button {
  background: var(--accent); color: var(--bg); border: none;
  padding: 0.75rem 1rem; border-radius: var(--radius); font-size: 0.95rem; font-weight: 600;
  cursor: pointer; letter-spacing: 0.02em;
  transition: background 0.15s ease;
}
.gate-inner button:hover { background: var(--fg); }
.err { color: var(--err); font-size: 0.85rem; min-height: 1.2em; margin: 0.5rem 0 0; }

/* ============ LOGO ============ */
.logo-mark {
  width: 56px; height: 56px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--accent) 0 5px, transparent 6px),
    radial-gradient(circle at center, transparent 0 17px, var(--accent-dim) 17px 19px, transparent 20px);
  margin: 0 auto;
  display: inline-block;
}
.logo-mark.sm {
  width: 22px; height: 22px; margin: 0; vertical-align: middle;
  background:
    radial-gradient(circle at center, var(--accent) 0 2.5px, transparent 3px),
    radial-gradient(circle at center, transparent 0 7px, var(--accent-dim) 7px 8px, transparent 9px);
}

/* ============ TOPBAR ============ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14, 13, 12, 0.85);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border-soft);
  padding: 0.85rem 0;
}
.brand { font-size: 0.95rem; display: flex; align-items: center; gap: 0.5rem; }
.topnav { display: flex; gap: 1.2rem; font-size: 0.85rem; flex-wrap: wrap; }
.topnav a { border-bottom: none; color: var(--fg-mute); }
.topnav a:hover { color: var(--accent); }

/* ============ HERO ============ */
.hero {
  padding: 6rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -300px; right: -200px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(217, 199, 154, 0.07), transparent 60%);
  pointer-events: none;
}
.hero .huge {
  background: linear-gradient(180deg, var(--fg) 0%, #aaa298 100%);
  background-clip: text; -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.kpis {
  display: flex; flex-wrap: wrap; gap: 1.5rem 3rem;
  margin: 2.5rem 0 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}
.kpi { display: flex; flex-direction: column; gap: 0.15rem; }
.kpi .n {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--accent);
  line-height: 1;
}
.kpi .l {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.closing-kpis { margin-top: 3rem; }

/* ============ BUTTONS ============ */
.hero-cta { display: flex; gap: 1rem; margin-top: 1rem; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 0.8rem 1.4rem;
  border-radius: var(--radius); font-size: 0.93rem; font-weight: 500;
  border-bottom: none; letter-spacing: 0.01em;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn.primary { background: var(--accent); color: var(--bg); }
.btn.primary:hover { background: var(--fg); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--fg); border: 1px solid var(--border-strong); }
.btn.ghost:hover { border-color: var(--accent-dim); color: var(--accent); }

/* ============ GRIDS ============ */
.grid-2 {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 3rem; align-items: start;
}
.grid-3 {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem; margin: 2rem 0;
}

.callout {
  background: var(--bg-elev);
  border-left: 2px solid var(--accent-dim);
  padding: 1.6rem 1.8rem;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.callout-title { color: var(--accent); font-weight: 500; margin-bottom: 0.8rem; }
.check-list { margin: 0; padding-left: 1.2rem; }
.check-list li { margin-bottom: 0.5rem; color: var(--fg-mute); }
.check-list li::marker { color: var(--accent-dim); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.card-h {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent-dim);
  text-transform: uppercase;
  margin: 0 0 1rem;
}
.tight { margin: 0; padding-left: 1.1rem; font-size: 0.92rem; }
.tight li { margin-bottom: 0.55rem; color: var(--fg-mute); line-height: 1.5; }
.tight li::marker { color: var(--accent-dim); }
.tight strong { color: var(--fg); }

/* ============ API CARDS ============ */
.api-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin: 2.5rem 0 1.5rem;
}
.api-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.4rem 1.3rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.api-card::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--accent-dim); opacity: 0.5;
}
.api-card[data-color="amazon"]::after { background: var(--api-amazon); }
.api-card[data-color="ads"]::after { background: var(--api-ads); }
.api-card[data-color="ext"]::after { background: var(--api-ext); }
.api-card:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.api-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.api-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  padding: 0.25rem 0.55rem;
  background: var(--bg-elev);
  border-radius: 4px;
  color: var(--fg-mute);
}
.api-card[data-color="amazon"] .api-badge { color: var(--api-amazon); }
.api-card[data-color="ads"] .api-badge { color: var(--api-ads); }
.api-card[data-color="ext"] .api-badge { color: var(--api-ext); }
.api-cadence {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg);
}
.api-card h3 { font-size: 1.1rem; margin: 0 0 0.5rem; }
.api-card p { font-size: 0.92rem; color: var(--fg-mute); margin-bottom: 0.6rem; }
.api-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem !important;
  color: var(--fg-dim) !important;
  margin-top: 0.8rem !important;
}
.api-footnote {
  margin-top: 2rem;
  padding: 1.3rem 1.5rem;
  background: var(--bg-elev);
  border-radius: var(--radius);
  border-left: 2px solid var(--accent-dim);
}
.api-footnote p { margin: 0; color: var(--fg-mute); font-size: 0.95rem; }

/* ============ PIPELINE DIAGRAM ============ */
.pipeline-section { background: var(--bg-alt); }
.pipeline-wrap {
  position: relative;
  margin: 3rem auto 1rem;
  max-width: 1000px;
  height: 760px;
}
.pipeline-svg {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
.pipe-stage {
  position: absolute;
  width: 280px;
  padding: 1rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  z-index: 2;
}
.pipe-stage.center {
  left: 50%;
  transform: translateX(-50%);
  width: 460px;
}
.pipe-stage h4 { font-size: 1rem; margin: 0.4rem 0 0.3rem; }
.pipe-stage p { font-size: 0.86rem; color: var(--fg-mute); margin: 0; }
.pipe-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  padding: 0.25rem 0.55rem;
  background: var(--bg-elev);
  border-radius: 4px;
  color: var(--fg-mute);
  display: inline-block;
}
.pipe-badge.api { color: var(--api-amazon); }
.pipe-badge.ads { color: var(--api-ads); }
.pipe-badge.etl { color: var(--logic); }
.pipe-badge.db { color: var(--db); }
.pipe-badge.logic { color: var(--logic); }
.pipe-badge.dash { color: var(--dash); }
.dashboard-stage {
  background: linear-gradient(180deg, var(--bg-card), rgba(141, 180, 226, 0.06));
  border-color: rgba(141, 180, 226, 0.4) !important;
  box-shadow: 0 8px 30px -12px rgba(141, 180, 226, 0.2);
}

/* Pipeline animated dots */
@keyframes flow1 {
  0% { transform: translate(250px, 90px); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(500px, 200px); opacity: 0; }
}
@keyframes flow2 {
  0% { transform: translate(750px, 90px); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(500px, 200px); opacity: 0; }
}
@keyframes flow3 {
  0% { transform: translate(500px, 250px); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(500px, 335px); opacity: 0; }
}
@keyframes flow4 {
  0% { transform: translate(500px, 395px); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(500px, 475px); opacity: 0; }
}
@keyframes flow5 {
  0% { transform: translate(500px, 540px); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translate(500px, 615px); opacity: 0; }
}
.dot { transform-box: fill-box; transform-origin: center; }
.dot-1 { animation: flow1 3.4s linear infinite; }
.dot-2 { animation: flow2 3.4s linear infinite 1s; }
.dot-3 { animation: flow3 2.4s linear infinite 0.5s; }
.dot-4 { animation: flow4 2.4s linear infinite 1.5s; }
.dot-5 { animation: flow5 2.4s linear infinite 2.5s; }
@media (prefers-reduced-motion: reduce) {
  .dot { display: none; }
}

/* ============ DB SURFACES ============ */
.db-surfaces { margin-top: 2rem; }
.db-surfaces .card { padding: 1.5rem 1.4rem; }
.sql-callout {
  margin-top: 2rem;
  padding: 1.5rem 1.7rem;
}
.sql-callout .callout-title { margin-bottom: 0.6rem; }

/* ============ RULES GRID ============ */
.rules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2.5rem 0 2rem;
}
.rule {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem 1rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.rule:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.rule[data-status="off"] { opacity: 0.55; }
.rule-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.5rem;
}
.prio {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--accent-dim);
  background: var(--bg-elev);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}
.status {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}
.status.active { background: rgba(109, 191, 126, 0.12); color: var(--ok); }
.status.off { background: rgba(154, 148, 142, 0.1); color: var(--fg-dim); }
.rule h4 { font-size: 0.98rem; margin: 0 0 0.4rem; }
.rule p { font-size: 0.85rem; color: var(--fg-mute); margin: 0; line-height: 1.5; }

.rules-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}
.rules-summary > div {
  display: flex; flex-direction: column; gap: 0.2rem;
}
.rules-summary .big {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--accent);
  line-height: 1;
}
.rules-summary .lbl {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ============ BEFORE / AFTER TABLE ============ */
.ba-table {
  margin: 2.5rem 0 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.ba-row {
  display: grid;
  grid-template-columns: 1.1fr 2fr 2.2fr;
  border-bottom: 1px solid var(--border-soft);
}
.ba-row:last-child { border-bottom: none; }
.ba-row > div {
  padding: 1rem 1.2rem;
  border-right: 1px solid var(--border-soft);
  font-size: 0.92rem;
  color: var(--fg-mute);
  line-height: 1.5;
}
.ba-row > div:last-child { border-right: none; }
.ba-row > div:first-child { color: var(--fg); }
.ba-head { background: var(--bg-elev); }
.ba-head > div {
  color: var(--accent-dim) !important;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.footnote-em {
  margin-top: 2rem;
  font-style: italic;
  color: var(--fg-mute);
  max-width: 70ch;
}

/* ============ DASHBOARD MOCK ============ */
.dashboard-mock {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
  margin: 2.5rem 0 1rem;
}
.dash-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem 1.3rem;
  position: relative;
  overflow: hidden;
}
.dash-card.pulse::before, .dash-card.errors::before,
.dash-card.impact::before, .dash-card.control::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
}
.dash-card.pulse::before { background: var(--ok); }
.dash-card.errors::before { background: var(--err); }
.dash-card.impact::before { background: var(--warn); }
.dash-card.control::before { background: var(--info); }
.dash-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.6rem;
}
.dash-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--accent-dim);
}
.dash-status {
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.dash-status.ok { color: var(--ok); }
.dash-status.warn { color: var(--warn); }
.dash-status.info { color: var(--info); }
.dash-card h4 { font-size: 1.1rem; margin: 0 0 0.9rem; }
.dash-list {
  list-style: none; padding: 0; margin: 0;
}
.dash-list li {
  display: flex; align-items: flex-start; gap: 0.7rem;
  font-size: 0.9rem;
  color: var(--fg-mute);
  padding: 0.45rem 0;
  border-bottom: 1px dashed var(--border-soft);
}
.dash-list li:last-child { border-bottom: none; }
.dash-list li strong { color: var(--fg); }
.dot-led {
  width: 8px; height: 8px; border-radius: 50%;
  flex-shrink: 0; margin-top: 0.45rem;
}
.dot-led.ok { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot-led.warn { background: var(--warn); box-shadow: 0 0 8px var(--warn); }
.dot-led.err { background: var(--err); box-shadow: 0 0 8px var(--err); animation: blinkRed 1.6s infinite; }
@keyframes blinkRed { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.dash-toggles li { padding-left: 0; }
.toggle {
  width: 26px; height: 14px;
  border-radius: 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  position: relative;
  flex-shrink: 0;
  margin-top: 0.2rem;
}
.toggle::after {
  content: '';
  position: absolute;
  top: 1px; left: 1px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--fg-dim);
  transition: left 0.2s ease, background 0.2s ease;
}
.toggle.on { border-color: var(--ok); background: rgba(109, 191, 126, 0.12); }
.toggle.on::after { left: 13px; background: var(--ok); }

.gates {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}
.gate-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.2rem 1.1rem;
  position: relative;
}
.gate-num {
  position: absolute;
  top: -10px; left: 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--accent);
  color: var(--bg);
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}
.gate-card strong { display: block; margin-bottom: 0.4rem; color: var(--accent); }
.gate-card p { font-size: 0.85rem; color: var(--fg-mute); margin: 0; line-height: 1.5; }

/* ============ LOOP DIAGRAM ============ */
.loop-band { background: linear-gradient(180deg, var(--bg-alt), var(--bg)); }
.loop-diagram {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  margin: 2.5rem 0 1rem;
  max-width: 900px;
}
.loop-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.5rem;
  align-items: start;
  padding: 1.2rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.loop-step.learn {
  background: linear-gradient(135deg, var(--bg-card), rgba(217, 199, 154, 0.06));
  border-color: var(--accent-dim);
}
.ls-num {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  color: var(--accent);
  line-height: 1;
  text-align: center;
}
.loop-step h4 { margin: 0 0 0.3rem; font-size: 1.05rem; }
.loop-step p { margin: 0; color: var(--fg-mute); font-size: 0.92rem; }
.loop-arrow {
  width: 2px; height: 22px;
  background: linear-gradient(180deg, var(--accent-dim), transparent);
  margin-left: 27px;
}
.loop-arrow.back {
  background: linear-gradient(180deg, transparent, var(--accent));
  position: relative;
}
.loop-arrow.back::after {
  content: '';
  position: absolute;
  top: 12px; left: -3px;
  width: 8px; height: 8px;
  border-right: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent);
  transform: rotate(45deg);
}

/* ============ ROADMAP ============ */
.roadmap-section { background: var(--bg-alt); }
.roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2.5rem 0 1rem;
  position: relative;
}
.roadmap::before {
  content: '';
  position: absolute;
  top: 24px; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.rm-stage {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.3rem 1.2rem;
  position: relative;
}
.rm-stage.now { border-color: var(--accent-dim); }
.rm-stage::before {
  content: '';
  position: absolute;
  top: -7px; left: 24px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent-dim);
}
.rm-stage.now::before { background: var(--accent); border-color: var(--accent); }
.rm-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--accent-dim);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.5rem;
  padding-top: 0.2rem;
}
.rm-stage.now .rm-label { color: var(--accent); }
.rm-stage h4 { font-size: 1rem; margin: 0 0 0.6rem; }
.rm-stage ul { margin: 0; padding-left: 1.1rem; font-size: 0.86rem; }
.rm-stage li { margin-bottom: 0.3rem; color: var(--fg-mute); }
.rm-stage li::marker { color: var(--accent-dim); }
.rm-note {
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: var(--fg-mute);
  max-width: 70ch;
}

/* ============ SCALE GRID ============ */
.scale-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  margin: 2.5rem 0 1rem;
}
.scale-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.5rem 1.4rem;
  text-align: left;
}
.scale-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  display: block;
  margin-bottom: 1rem;
}
.scale-card h4 { font-size: 1.2rem; margin: 0 0 0.6rem; }
.scale-card p { margin: 0; color: var(--fg-mute); font-size: 0.92rem; }

/* ============ STACK GRID ============ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin: 2.5rem 0 1rem;
}
.stack-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem 1.2rem;
}
.stack-kind {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--accent-dim);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.6rem;
}
.stack-card h4 { font-size: 1rem; margin: 0 0 0.5rem; }
.stack-card p { margin: 0; color: var(--fg-mute); font-size: 0.9rem; line-height: 1.55; }

/* ============ CLOSING ============ */
.closing h2 { font-size: 2.3rem; }
.closing .lede { font-size: 1.18rem; max-width: 65ch; }

/* ============ FOOTER ============ */
.footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--border-soft);
  font-size: 0.85rem;
}

/* ============ REVEAL ANIMATION ============ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 980px) {
  .grid-2, .grid-3, .api-grid, .rules-grid,
  .roadmap, .scale-grid, .stack-grid, .gates {
    grid-template-columns: 1fr 1fr;
  }
  .roadmap::before { display: none; }
  .dashboard-mock { grid-template-columns: 1fr; }
  .rules-summary { grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
  .pipeline-wrap { height: auto; }
  .pipeline-svg { display: none; }
  .pipe-stage { position: static; transform: none; width: 100% !important; margin-bottom: 0.8rem; }
  .pipe-stage.center { width: 100% !important; }
  .ba-row { grid-template-columns: 1fr; }
  .ba-row > div { border-right: none; border-bottom: 1px solid var(--border-soft); }
  .ba-row > div:last-child { border-bottom: none; }
  .ba-head { display: none; }
}

@media (max-width: 640px) {
  .container { padding: 0 1.2rem; }
  .topnav { display: none; }
  .grid-2, .grid-3, .api-grid, .rules-grid,
  .roadmap, .scale-grid, .stack-grid, .gates {
    grid-template-columns: 1fr;
  }
  .rules-summary { grid-template-columns: 1fr 1fr; }
  .kpis { gap: 1.2rem 2rem; }
  .kpi .n { font-size: 1.6rem; }
  h2 { font-size: 1.65rem; }
  .huge { font-size: clamp(2rem, 9vw, 2.8rem); }
  .hero { padding: 3.5rem 0 3rem; }
  .section, .band { padding: 4rem 0; }
  pre { font-size: 0.74rem; }
}