/* ===== RESET / TOKENS ===== */
:root {
  --bg-hue: 220;
  --accent-hue: 85;
  --bg: oklch(0.18 0.02 var(--bg-hue));
  --bg-deep: oklch(0.14 0.02 var(--bg-hue));
  --bg-panel: oklch(0.21 0.02 var(--bg-hue));
  --fg: #F4F2EC;
  --fg-dim: oklch(0.82 0.01 var(--bg-hue));
  --muted: oklch(0.58 0.02 var(--bg-hue));
  --muted-2: oklch(0.45 0.02 var(--bg-hue));
  --rule: oklch(0.28 0.02 var(--bg-hue));
  --rule-strong: oklch(0.36 0.02 var(--bg-hue));
  --accent: oklch(0.82 0.14 var(--accent-hue));
  --accent-dim: oklch(0.55 0.08 var(--accent-hue));

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --maxw: 1440px;
  --gutter: clamp(20px, 4vw, 56px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

.mono { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.muted { color: var(--muted); }

/* subtle grain */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 1;
  background-image: radial-gradient(rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 3px 3px;
  mix-blend-mode: overlay;
}

/* ===== RULES (horizon lines) ===== */
.rule { height: 1px; background: var(--rule); width: 100%; }
.rule--full { width: 100%; }

/* ===== NAV ===== */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in oklch, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}
.nav-mark { display: inline-flex; }
.nav-ticker {
  justify-self: center;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--fg-dim);
}
.nav-ticker .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in oklch, var(--accent) 25%, transparent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  font-size: 14px;
  transition: border-color .2s, background .2s;
}
.nav-cta:hover { border-color: var(--fg); background: color-mix(in oklch, var(--fg) 6%, transparent); }
.nav-cta .arrow { transition: transform .2s; }
.nav-cta:hover .arrow { transform: translateX(3px); }

/* ===== LIV WORDMARK ===== */
.liv-mark {
  position: relative;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 26px;
  letter-spacing: 0.18em;
  color: var(--fg);
  line-height: 1;
  padding: 0 2px;
  display: inline-block;
}
.liv-mark--sm { font-size: 20px; }
.liv-mark-text { display: inline-block; }
.liv-mark-line {
  position: absolute;
  left: -8px; right: -8px;
  top: 52%;
  height: 1px;
  background: var(--fg);
}

/* ===== HERO ===== */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(48px, 9vh, 110px) var(--gutter) clamp(64px, 10vh, 120px);
  position: relative;
}
.hero-meta {
  display: flex; justify-content: space-between;
  gap: 24px; margin-bottom: 64px;
  flex-wrap: wrap;
}
.headline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(44px, 8vw, 112px);
  line-height: 0.98;
  letter-spacing: -0.025em;
  color: var(--fg);
  max-width: 15ch;
}
.headline-line { display: block; position: relative; }
.headline-line .word { display: inline-block; }
.headline-line .word--accent { color: var(--fg); position: relative; }
.headline .muted { color: var(--muted); font-size: 0.42em; font-family: var(--font-body); letter-spacing: 0; font-weight: 400; }
.headline-line--strike { position: relative; display: inline-block; }
.headline-line--strike .strike {
  position: absolute; left: -2vw; right: -4vw;
  top: 52%;
  height: 2px;
  background: var(--fg);
  transform-origin: left;
  animation: strikeIn 1.2s cubic-bezier(.22,.8,.2,1) .4s both;
}
@keyframes strikeIn { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.headline--stacked .headline-line--strike .strike { display: none; }
.headline--tight { letter-spacing: -0.04em; font-stretch: condensed; }
.headline--tight .headline-line--strike .strike { height: 1px; }

.hero-prompt {
  margin-top: clamp(40px, 6vh, 72px);
  max-width: 680px;
  position: relative;
}
.prompt-rule {
  height: 1px; background: var(--rule);
  margin-bottom: 16px;
}
.prompt-body {
  display: flex; align-items: baseline; gap: 14px;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--fg-dim);
  line-height: 1.4;
  min-height: 2em;
}
.prompt-text { font-family: var(--font-body); }
.caret {
  display: inline-block;
  animation: blink 1s steps(2) infinite;
  color: var(--accent);
  margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-cta {
  margin-top: clamp(40px, 6vh, 72px);
  display: flex; align-items: center; gap: 24px;
  flex-wrap: wrap;
}
.cta-side { max-width: 28ch; line-height: 1.5; letter-spacing: 0.04em; }

/* ===== COUNTDOWN ===== */
.hero-countdown {
  margin-top: clamp(48px, 7vh, 88px);
  border-top: 1px solid var(--rule);
  padding-top: 24px;
}
.countdown {
  display: flex; align-items: baseline; gap: 24px;
  flex-wrap: wrap;
}
.countdown-label { letter-spacing: 0.12em; }
.countdown-cells {
  display: flex; align-items: baseline; gap: 4px;
  font-variant-numeric: tabular-nums;
}
.countdown-cell {
  display: inline-flex; align-items: baseline; gap: 6px;
  padding: 0 4px;
}
.countdown-num {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.countdown-unit { color: var(--muted-2); letter-spacing: 0.1em; }
.countdown-sep {
  color: var(--muted-2);
  margin: 0 2px;
  font-size: 18px;
  align-self: center;
}
.countdown--compact .countdown-num { font-size: 20px; }
.countdown--compact { gap: 14px; }
.success-countdown {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 14px 0;
  margin: 4px 0;
}

/* ===== FOUNDER BADGE ===== */
.founder-badge {
  border: 1px solid var(--rule);
  padding: 18px 20px;
  display: flex; flex-direction: column; gap: 12px;
  background: color-mix(in oklch, var(--accent) 4%, transparent);
}
.founder-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  flex-wrap: wrap;
}
.founder-tag {
  color: var(--accent);
  letter-spacing: 0.14em;
}
.founder-pitch {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.7vw, 22px);
  line-height: 1.3;
  color: var(--fg);
}
.founder-pitch strong { font-weight: 500; color: var(--accent); }
.founder-bar {
  height: 2px;
  background: var(--rule);
  position: relative;
  overflow: hidden;
}
.founder-fill {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: var(--accent);
}
.success-share {
  display: flex; gap: 10px; flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 14px;
  padding: 18px 28px;
  font-family: var(--font-body);
  font-size: 16px;
  letter-spacing: 0;
  border-radius: 999px;
  transition: transform .15s, background .2s, color .2s;
  position: relative;
  overflow: hidden;
}
.btn--primary {
  background: var(--fg);
  color: var(--bg);
}
.btn--primary:hover { transform: translateY(-1px); }
.btn--primary .btn-arrow { transition: transform .2s; }
.btn--primary:hover .btn-arrow { transform: translateX(4px); }
.btn--full { width: 100%; justify-content: space-between; padding: 20px 28px; }
.btn--loading { opacity: 0.7; cursor: wait; }

/* ===== POSITIONING ===== */
.positioning {
  margin-top: 0;
}
.positioning-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(72px, 12vh, 140px) var(--gutter);
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: clamp(20px, 4vw, 48px);
}
.col-label { align-self: start; padding-top: 8px; color: var(--muted-2); }
.big-quote {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 4.5vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 20ch;
}
.big-quote .muted { color: var(--muted); }

/* ===== FOR WHOM ===== */
.for-whom {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(80px, 12vh, 140px) var(--gutter);
}
.fw-header {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: clamp(20px, 4vw, 48px);
  margin-bottom: clamp(48px, 8vh, 88px);
}
.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 4.2vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 18ch;
}
.section-title .muted { color: var(--muted); }

.fw-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.persona {
  background: var(--bg);
  padding: clamp(32px, 4vw, 56px);
  display: flex; flex-direction: column; gap: 32px;
}
.persona-visual {
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  padding: 20px;
  min-height: 220px;
  position: relative;
  overflow: hidden;
}
.persona-head { display: flex; align-items: baseline; gap: 16px; }
.persona-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 400;
  letter-spacing: -0.01em;
}
.persona-pitch {
  font-size: 17px;
  color: var(--fg-dim);
  line-height: 1.5;
  max-width: 36ch;
  text-wrap: pretty;
}
.persona-group { display: flex; flex-direction: column; gap: 10px; }
.persona-group-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
  padding-top: 4px;
}
.persona-list { display: flex; flex-direction: column; gap: 10px; margin-top: 0; }

.power-line {
  max-width: 800px;
  margin: clamp(56px, 8vh, 96px) auto 0;
  padding: 28px 0 0;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}
.pl-tag { padding-top: 10px; }
.persona-list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--rule);
  font-size: 15px;
  color: var(--fg-dim);
}
.persona-list li:last-child { border-bottom: 1px solid var(--rule); }
.li-num { padding-top: 2px; }

/* Visual blocks */
.viz { position: relative; height: 100%; display: flex; flex-direction: column; gap: 14px; }
.viz-strike {
  position: absolute;
  left: -20px; right: -20px;
  top: 50%;
  height: 1px;
  background: var(--rule-strong);
}
.viz-label { color: var(--muted); }
.viz-rows { display: flex; flex-direction: column; gap: 6px; position: relative; z-index: 1; }
.viz-row {
  display: grid;
  grid-template-columns: 12px 90px 1fr;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  background: color-mix(in oklch, var(--bg) 60%, transparent);
  border: 1px solid var(--rule);
  opacity: 0;
  animation: rowIn .5s ease-out forwards;
  font-size: 12px;
}
@keyframes rowIn { from { opacity: 0; transform: translateX(-6px); } to { opacity: 1; transform: translateX(0); } }
.viz-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.viz-status { justify-self: end; }
.viz-footer { padding-top: 8px; border-top: 1px solid var(--rule); }

.viz-eq { display: flex; flex-direction: column; gap: 8px; position: relative; z-index: 1; }
.eq-line, .eq-step {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 8px;
  padding: 8px 10px;
  background: color-mix(in oklch, var(--bg) 60%, transparent);
  border: 1px solid var(--rule);
  font-size: 13px;
  color: var(--fg-dim);
}
.eq-step em { font-style: normal; color: var(--fg); font-family: var(--font-mono); font-size: 12px; }
.eq-step--active { border-color: var(--accent-dim); }

.viz-tabs { display: flex; gap: 14px; position: relative; z-index: 1; }
.viz-tab { color: var(--muted-2); letter-spacing: 0.12em; transition: color .2s; }
.viz-tab--on { color: var(--fg); }
.viz-tab--on::after {
  content: '';
  display: block;
  height: 1px;
  background: var(--fg);
  margin-top: 4px;
}
.live { display: inline-flex; align-items: center; gap: 6px; color: var(--accent) !important; }
.rec-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.4s ease-in-out infinite;
}

.viz-brain {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  z-index: 1;
}
.brain-graph {
  width: 100%;
  height: 110px;
  stroke: var(--rule-strong);
  fill: var(--muted);
  stroke-width: 1;
}
.brain-graph circle { transition: fill .3s; }
.brain-node--active { fill: var(--accent); }
.brain-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.brain-tags span {
  padding: 4px 8px;
  border: 1px solid var(--rule);
  color: var(--muted);
  letter-spacing: 0.06em;
}
.brain-tag--on {
  color: var(--bg) !important;
  background: var(--fg);
  border-color: var(--fg) !important;
}

/* ===== HOW ===== */
.how {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 0 clamp(80px, 12vh, 140px);
}
.how-header {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: clamp(20px, 4vw, 48px);
  padding: clamp(60px, 10vh, 120px) var(--gutter) clamp(40px, 6vh, 72px);
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  padding: 0 var(--gutter);
}
.how-item {
  padding: 32px 28px 32px 0;
  display: flex; flex-direction: column;
  gap: 14px;
  position: relative;
}
.how-item + .how-item { padding-left: 28px; border-left: 1px solid var(--rule); }
.how-num { color: var(--muted-2); }
.how-rule {
  height: 1px;
  background: var(--fg);
  width: 40px;
  margin: 8px 0 6px;
}
.how-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.how-desc { color: var(--fg-dim); font-size: 15px; line-height: 1.55; max-width: 32ch; }

/* ===== WAITLIST ===== */
.waitlist { background: var(--bg-deep); }
.waitlist-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(80px, 12vh, 140px) var(--gutter);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}
.waitlist-left { display: flex; flex-direction: column; gap: 24px; }
.waitlist-list { display: flex; flex-direction: column; gap: 8px; color: var(--fg-dim); margin-top: 8px; }
.waitlist-list li { display: flex; gap: 10px; align-items: baseline; }

.form {
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: clamp(24px, 3vw, 40px);
  display: flex; flex-direction: column;
  gap: 22px;
}
.field { display: flex; flex-direction: column; gap: 10px; border: 0; padding: 0; margin: 0; min-width: 0; }
.field-label { letter-spacing: 0.12em; }
.field-input {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule-strong);
  padding: 10px 0 12px;
  font: inherit;
  color: var(--fg);
  font-size: 18px;
  outline: none;
  transition: border-color .2s;
}
.field-input::placeholder { color: var(--muted-2); }
.field-input:focus { border-color: var(--fg); }
.field-input--error { border-color: oklch(0.72 0.18 25); }

.radio-row { display: flex; flex-wrap: wrap; gap: 8px; }
.radio {
  position: relative;
  padding: 10px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  color: var(--fg-dim);
  transition: all .15s;
}
.radio input { position: absolute; opacity: 0; pointer-events: none; }
.radio:hover { border-color: var(--fg); color: var(--fg); }
.radio--on {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

.form-error { color: oklch(0.78 0.18 25); }
.form-fine { max-width: 40ch; line-height: 1.6; letter-spacing: 0.04em; }

/* success */
.success {
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: clamp(24px, 3vw, 40px);
  display: flex; flex-direction: column; gap: 20px;
  position: relative;
  overflow: hidden;
}
.success-head { display: flex; justify-content: space-between; align-items: center; }
.success-check {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--accent); color: var(--bg);
  display: grid; place-items: center;
}
.success-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 400;
  letter-spacing: -0.015em;
}
.success-strike { height: 1px; background: var(--fg); margin: 4px 0; }
.success-stats {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 28px;
  padding: 8px 0;
}
.success-stat { display: contents; }
.success-stat > .mono { align-self: baseline; color: var(--muted); letter-spacing: 0.1em; }
.success-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
}
.success-email {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--fg-dim);
  word-break: break-all;
}
.success-note { color: var(--fg-dim); font-size: 15px; line-height: 1.55; }
.share-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  transition: border-color .2s;
}
.share-btn:hover { border-color: var(--fg); }

/* ===== FOOTER ===== */
.footer { border-top: 1px solid var(--rule); }
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 32px var(--gutter);
  display: flex; justify-content: space-between; align-items: center;
  gap: 24px; flex-wrap: wrap;
}
.footer-mark { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 24px; color: var(--muted); }
.footer-links a:hover { color: var(--fg); }

/* ===== GRID OVERLAY ===== */
.grid-overlay {
  position: fixed; inset: 0;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  pointer-events: none; z-index: 50;
}
.grid-col { background: color-mix(in oklch, var(--accent) 8%, transparent); height: 100vh; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nav-ticker { display: none; }
  .positioning-inner,
  .fw-header,
  .how-header { grid-template-columns: 1fr; }
  .col-label { padding-top: 0; }
  .fw-grid { grid-template-columns: 1fr; }
  .how-grid { grid-template-columns: 1fr; padding: 0 var(--gutter); }
  .how-item + .how-item { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .waitlist-inner { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .hero-meta { gap: 8px; }
  .hero-cta { gap: 12px; }
  .btn { padding: 16px 22px; font-size: 15px; }
  .cta-side { max-width: 100%; }
}