/* ============================================
   DANI — Design Tokens
   Concept: sovereign voice AI, warm human trust,
   waveform-as-clarity motif. Dark charcoal base,
   warm amber-copper accent (deliberately not the
   cliché AI blue/purple).
   ============================================ */

:root,
[data-theme='light'] {
  /* Surfaces — warm off-white/ivory, paper-like */
  --color-bg: #f6f3ee;
  --color-surface: #fbf9f5;
  --color-surface-2: #ffffff;
  --color-surface-offset: #efeae1;
  --color-surface-offset-2: #e8e1d4;
  --color-surface-dynamic: #ded5c2;
  --color-divider: #ddd5c5;
  --color-border: #d1c7b3;

  /* Text — warm near-black to muted taupe */
  --color-text: #211c15;
  --color-text-muted: #6f6656;
  --color-text-faint: #a99e89;
  --color-text-inverse: #f6f3ee;

  /* Primary accent — warm copper/amber */
  --color-primary: #b5651d;
  --color-primary-hover: #96521a;
  --color-primary-active: #7a4315;
  --color-primary-highlight: #ecd9c2;

  /* Secondary accent — deep clay red-brown, used sparingly */
  --color-warning: #8c4a2e;
  --color-warning-hover: #703b25;
  --color-warning-active: #562d1c;
  --color-warning-highlight: #e6d2c4;

  --color-error: #93372c;
  --color-error-hover: #762b22;
  --color-error-active: #591f19;
  --color-error-highlight: #e8d2cd;

  --color-success: #4d6b3f;
  --color-success-hover: #3c552f;
  --color-success-active: #2c4022;
  --color-success-highlight: #d9e1d0;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.03 60 / 0.08);
  --shadow-md: 0 4px 16px oklch(0.2 0.03 60 / 0.10);
  --shadow-lg: 0 16px 40px oklch(0.2 0.03 60 / 0.16);

  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1240px;
  --content-full: 100%;

  --font-display: 'Cabinet Grotesk', 'General Sans', 'Segoe UI', sans-serif;
  --font-body: 'General Sans', 'Satoshi', 'Segoe UI', sans-serif;
}

/* DARK MODE — primary intended experience: near-black, warm amber accent */
[data-theme='dark'] {
  --color-bg: #14110c;
  --color-surface: #1b170f;
  --color-surface-2: #201b12;
  --color-surface-offset: #241f15;
  --color-surface-offset-2: #2a2417;
  --color-surface-dynamic: #33291a;
  --color-divider: #2c2519;
  --color-border: #3c3222;

  --color-text: #f2ead9;
  --color-text-muted: #ab9d84;
  --color-text-faint: #766b57;
  --color-text-inverse: #1b170f;

  --color-primary: #e8974a;
  --color-primary-hover: #f2ac68;
  --color-primary-active: #f7c088;
  --color-primary-highlight: #40311c;

  --color-warning: #d68662;
  --color-warning-hover: #e29d7d;
  --color-warning-active: #ecb499;
  --color-warning-highlight: #3c2a1f;

  --color-error: #d3766a;
  --color-error-hover: #dd8e83;
  --color-error-active: #e6a99f;
  --color-error-highlight: #3c231e;

  --color-success: #92ae7e;
  --color-success-hover: #a5bd94;
  --color-success-active: #b9ccab;
  --color-success-highlight: #29301f;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.35);
  --shadow-md: 0 8px 24px oklch(0 0 0 / 0.45);
  --shadow-lg: 0 24px 56px oklch(0 0 0 / 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #14110c;
    --color-surface: #1b170f;
    --color-surface-2: #201b12;
    --color-surface-offset: #241f15;
    --color-surface-offset-2: #2a2417;
    --color-surface-dynamic: #33291a;
    --color-divider: #2c2519;
    --color-border: #3c3222;
    --color-text: #f2ead9;
    --color-text-muted: #ab9d84;
    --color-text-faint: #766b57;
    --color-text-inverse: #1b170f;
    --color-primary: #e8974a;
    --color-primary-hover: #f2ac68;
    --color-primary-active: #f7c088;
    --color-primary-highlight: #40311c;
    --color-warning: #d68662;
    --color-warning-highlight: #3c2a1f;
    --color-error: #d3766a;
    --color-error-highlight: #3c231e;
    --color-success: #92ae7e;
    --color-success-highlight: #29301f;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.35);
    --shadow-md: 0 8px 24px oklch(0 0 0 / 0.45);
    --shadow-lg: 0 24px 56px oklch(0 0 0 / 0.55);
  }
}

/* Type scale */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.75rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6vw, 6.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ============================================
   Global element styles
   ============================================ */

body {
  overflow-x: hidden;
}

.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.container--wide {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.container--narrow {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

section {
  position: relative;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.eyebrow::before {
  content: '';
  width: 14px;
  height: 1.5px;
  background: var(--color-primary);
  display: inline-block;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 650;
  letter-spacing: -0.01em;
}

p {
  color: var(--color-text-muted);
}

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

/* ============================================
   Header
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.08);
  transition:
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.site-header--hidden {
  transform: translateY(-100%);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}
.logo-mark {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 650;
  font-size: var(--text-lg);
  color: var(--color-text);
}
.logo-mark svg {
  width: 30px;
  height: 30px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.main-nav ul a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  position: relative;
}
.main-nav ul a:hover,
.main-nav ul a:focus-visible {
  color: var(--color-text);
}
.main-nav ul a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1.5px;
  background: var(--color-primary);
  transition: width var(--transition-interactive);
}
.main-nav ul a:hover::after,
.main-nav ul a:focus-visible::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* The header has two .header-actions blocks: one inside .main-nav (desktop)
   and one standalone for mobile (theme toggle + hamburger). Hide the
   standalone mobile block on desktop; show it only under 768px. */
.header-inner > .header-actions {
  display: none;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive),
    border-color var(--transition-interactive);
}
.btn-primary {
  background: var(--color-primary);
  color: #17120a;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid oklch(from var(--color-text) l c h / 0.18);
}
.btn-ghost:hover {
  border-color: oklch(from var(--color-text) l c h / 0.32);
  background: oklch(from var(--color-text) l c h / 0.04);
}
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  padding-block: clamp(var(--space-24), 14vw, 9rem) clamp(var(--space-16), 8vw, var(--space-24));
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-16);
  align-items: center;
}
.hero-copy .eyebrow {
  margin-bottom: var(--space-6);
}
.hero h1 {
  font-size: var(--text-hero);
  line-height: 1.02;
  margin-bottom: var(--space-6);
}
.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}
.hero-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-bottom: var(--space-8);
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}
.hero-proof {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
}
.hero-proof-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.hero-proof-item .num {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 650;
  color: var(--color-text);
}
.hero-proof-item .label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 20ch;
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16/12;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, oklch(0.08 0.02 60 / 0.5));
}

/* Waveform divider used between sections */
.wave-divider {
  width: 100%;
  height: 40px;
  color: var(--color-primary);
  opacity: 0.5;
}

/* ============================================
   Section rhythm
   ============================================ */

.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-24));
}
.section--tight {
  padding-block: clamp(var(--space-10), 6vw, var(--space-16));
}
.section--surface {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.section-head {
  max-width: 62ch;
  margin-bottom: var(--space-12);
}
.section-head h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-4);
}
.section-head p {
  font-size: var(--text-lg);
  margin-top: var(--space-4);
}

/* ============================================
   Problem section — asymmetric 2 col
   ============================================ */

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.problem-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.problem-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-8);
}
.problem-list-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  padding-block: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.problem-list-item:first-child {
  border-top: none;
  padding-top: 0;
}
.problem-list-item .index {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text-faint);
  font-weight: 600;
}
.problem-list-item h3 {
  font-size: var(--text-base);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  font-family: var(--font-body);
  font-weight: 650;
}
.problem-list-item p {
  font-size: var(--text-sm);
}

.pull-quote {
  margin-top: var(--space-16);
  padding: var(--space-8) var(--space-10);
  border-left: none;
  background: var(--color-surface-offset);
  border-radius: var(--radius-lg);
  position: relative;
}
.pull-quote p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  font-style: normal;
  max-width: 60ch;
}
.pull-quote cite {
  display: block;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-style: normal;
}

/* ============================================
   Loop / How it works — 4 step flow (not 3-col cards)
   ============================================ */

.loop-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-4);
  position: relative;
}
.loop-step {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 2px solid var(--color-primary);
}
.loop-step .step-num {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
  font-weight: 650;
}
.loop-step h3 {
  font-size: var(--text-lg);
  font-weight: 650;
  color: var(--color-text);
}
.loop-step p {
  font-size: var(--text-sm);
}

.solution-media {
  margin-top: var(--space-16);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.solution-media-img {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.solution-media-copy h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.solution-media-copy p {
  font-size: var(--text-base);
}
.solution-media-copy p + p {
  margin-top: var(--space-4);
}

.not-list {
  margin-top: var(--space-10);
  padding: var(--space-6) var(--space-8);
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
}
.not-list h4 {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.not-list ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
}
.not-list li {
  font-size: var(--text-sm);
  color: var(--color-text);
  position: relative;
  padding-left: var(--space-5);
}
.not-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-faint);
}

/* ============================================
   Use cases — feature grid, asymmetric 2+2
   ============================================ */

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-4);
}
.usecase-card {
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
}
.usecase-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.usecase-card p {
  font-size: var(--text-sm);
}
.usecase-card .tag {
  display: inline-block;
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

/* ============================================
   Technology — three pillars, asymmetric layout
   ============================================ */

.tech-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-16);
  align-items: start;
}
.tech-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: calc(var(--space-24));
}
.tech-pillars {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.tech-pillar {
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-divider);
}
.tech-pillar:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.tech-pillar h3 {
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}
.tech-pillar h3 .pillar-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  font-weight: 650;
}
.tech-pillar p {
  font-size: var(--text-sm);
}

.spec-strip {
  margin-top: var(--space-16);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  padding: var(--space-8);
  background: var(--color-surface-offset);
  border-radius: var(--radius-lg);
}
.spec-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.spec-item .spec-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.spec-item .spec-value {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 650;
  color: var(--color-text);
}

/* ============================================
   Market section — stat callouts, not gradient cards
   ============================================ */

.market-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-4);
}
.market-stat {
  padding-top: var(--space-6);
  border-top: 2px solid var(--color-divider);
}
.market-stat .stat-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-3);
}
.market-stat .stat-label {
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.market-stat .stat-source {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.market-stat .stat-source a {
  color: var(--color-text-faint);
  text-decoration: underline;
  text-decoration-color: oklch(from var(--color-text-faint) l c h / 0.4);
}
.market-stat .stat-source a:hover {
  color: var(--color-primary);
}

.market-note {
  margin-top: var(--space-12);
  padding: var(--space-6) var(--space-8);
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
  font-size: var(--text-sm);
}

/* ============================================
   Founder section
   ============================================ */

.founder-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: var(--space-16);
  align-items: start;
}
.founder-image-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: var(--space-24);
}
.founder-copy .eyebrow {
  margin-bottom: var(--space-6);
}
.founder-copy h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
}
.founder-copy p {
  font-size: var(--text-base);
  margin-bottom: var(--space-5);
}
.founder-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.credential-chip {
  font-size: var(--text-xs);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-divider);
  color: var(--color-text-muted);
}
.venture-list {
  margin-top: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.venture-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.venture-item:first-child {
  border-top: none;
  padding-top: 0;
}
.venture-item .venture-name {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: var(--text-sm);
  color: var(--color-text);
}
.venture-item p {
  font-size: var(--text-sm);
  margin: 0;
}

/* ============================================
   Vision / Roadmap — horizontal timeline
   ============================================ */

.vision-hero-img {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-16);
  aspect-ratio: 16/8;
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}
.roadmap-item {
  padding-top: var(--space-5);
  border-top: 2px solid var(--color-primary);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.roadmap-item .phase {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.roadmap-item h3 {
  font-size: var(--text-base);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 650;
}
.roadmap-item p {
  font-size: var(--text-sm);
}

/* ============================================
   Investor CTA
   ============================================ */

.cta-section {
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--radius-xl);
  margin-inline: var(--space-5);
  padding: clamp(var(--space-12), 8vw, var(--space-24)) clamp(var(--space-6), 6vw, var(--space-16));
  position: relative;
  overflow: hidden;
}
[data-theme='dark'] .cta-section {
  background: var(--color-surface-offset-2);
  color: var(--color-text);
}
.cta-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-16);
  align-items: end;
}
.cta-inner h2 {
  font-size: var(--text-2xl);
  color: var(--color-bg);
  margin-bottom: var(--space-6);
}
[data-theme='dark'] .cta-inner h2 {
  color: var(--color-text);
}
.cta-inner .cta-lede {
  font-size: var(--text-base);
  color: oklch(from var(--color-bg) l c h / 0.72);
  max-width: 52ch;
}
[data-theme='dark'] .cta-inner .cta-lede {
  color: var(--color-text-muted);
}
.cta-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.cta-form label {
  font-size: var(--text-xs);
  color: oklch(from var(--color-bg) l c h / 0.6);
  margin-bottom: var(--space-1);
  display: block;
}
[data-theme='dark'] .cta-form label {
  color: var(--color-text-faint);
}
.cta-form input,
.cta-form textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid oklch(from var(--color-bg) l c h / 0.2);
  background: oklch(from var(--color-bg) l c h / 0.06);
  color: var(--color-bg);
  font-size: var(--text-sm);
}
[data-theme='dark'] .cta-form input,
[data-theme='dark'] .cta-form textarea {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-surface);
}
.cta-form input::placeholder,
.cta-form textarea::placeholder {
  color: oklch(from var(--color-bg) l c h / 0.4);
}
.cta-form input:focus-visible,
.cta-form textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.cta-form .field-group {
  display: flex;
  flex-direction: column;
}
.cta-form button {
  margin-top: var(--space-2);
}
.cta-form-note {
  font-size: var(--text-xs);
  color: oklch(from var(--color-bg) l c h / 0.5);
  margin-top: var(--space-1);
}
[data-theme='dark'] .cta-form-note {
  color: var(--color-text-faint);
}
.cta-success {
  display: none;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  background: oklch(from var(--color-bg) l c h / 0.08);
  font-size: var(--text-sm);
  color: var(--color-bg);
}
[data-theme='dark'] .cta-success {
  background: var(--color-surface);
  color: var(--color-text);
}
.cta-success.is-visible {
  display: block;
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  padding-block: var(--space-16) var(--space-10);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 0.8fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-divider);
}
.footer-brand .logo-mark {
  margin-bottom: var(--space-4);
}
.footer-brand p {
  font-size: var(--text-sm);
  max-width: 34ch;
}
.footer-col h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-col a:hover {
  color: var(--color-primary);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ============================================
   Scroll reveal
   ============================================ */

.reveal {
  opacity: 1;
}
@supports (animation-timeline: scroll()) {
  .reveal {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 40%;
  }
}
@keyframes reveal-fade {
  to {
    opacity: 1;
  }
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .hero-visual {
    order: -1;
  }
  .problem-grid,
  .tech-layout,
  .founder-layout,
  .solution-media {
    grid-template-columns: 1fr;
  }
  .tech-image,
  .founder-image-wrap {
    position: static;
    max-width: 420px;
  }
  .loop-flow {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
  .usecase-grid {
    grid-template-columns: 1fr;
  }
  .market-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  .roadmap {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-10);
  }
  .cta-inner {
    grid-template-columns: 1fr;
  }
  .spec-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .header-inner > .header-actions {
    display: flex;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav.is-open {
    display: flex;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-8) var(--space-5);
    gap: var(--space-8);
    z-index: 90;
    overflow-y: auto;
  }
  .main-nav.is-open ul {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
    width: 100%;
  }
  .main-nav.is-open a {
    font-size: var(--text-lg);
  }
  .main-nav.is-open .header-actions {
    width: 100%;
  }
  .main-nav.is-open .btn {
    width: 100%;
  }

  .hero {
    padding-block: var(--space-16) var(--space-12);
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-proof {
    gap: var(--space-6);
  }
  .loop-flow {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .market-stats {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .roadmap {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .venture-item {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }
  .spec-strip {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .cta-section {
    margin-inline: var(--space-3);
    border-radius: var(--radius-lg);
  }
  .not-list ul {
    flex-direction: column;
    gap: var(--space-2);
  }
}