/* ============================================================
   PALVO — Physical-AI Orchestration Platform
   Design system: deep navy-black surfaces, cyan primary accent,
   gold secondary accent. Cabinet Grotesk display + Satoshi body.
   ============================================================ */

/* ---------- TOKENS ---------- */
:root,
[data-theme='dark'] {
  /* Surfaces (deep navy-black) */
  --color-bg: #0a0e14;
  --color-surface: #0e131b;
  --color-surface-2: #131a24;
  --color-surface-offset: #10161f;
  --color-surface-elevated: #16202c;
  --color-divider: #1c2733;
  --color-border: #26333f;
  --color-border-strong: #35485a;

  /* Text */
  --color-text: #e6edf3;
  --color-text-muted: #9fb0c0;
  --color-text-faint: #64768a;
  --color-text-inverse: #0a0e14;

  /* Primary accent — cyan */
  --color-primary: #22c7de;
  --color-primary-hover: #4fd6e8;
  --color-primary-active: #17a6bb;
  --color-primary-dim: #0f6a78;
  --color-primary-glow: rgba(34, 199, 222, 0.15);

  /* Secondary accent — gold */
  --color-gold: #e5a83a;
  --color-gold-dim: #6e5322;

  /* Success/status */
  --color-success: #5cc98a;

  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.1vw, 2.125rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.6vw, 3.5rem);
  --text-3xl: clamp(2.6rem, 1.4rem + 4.2vw, 5rem);
  --text-hero: clamp(3rem, 1rem + 6.5vw, 7rem);

  /* Spacing */
  --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;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Widths */
  --content-narrow: 680px;
  --content-default: 1040px;
  --content-wide: 1280px;

  /* Transitions */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-interactive: 200ms var(--ease);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--color-primary-glow);

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

/* Light mode — kept restrained; deep-tech brand prefers dark, but toggle required */
[data-theme='light'] {
  --color-bg: #f4f7fa;
  --color-surface: #ffffff;
  --color-surface-2: #eef3f8;
  --color-surface-offset: #e9eff5;
  --color-surface-elevated: #ffffff;
  --color-divider: #dde5ee;
  --color-border: #d0dae4;
  --color-border-strong: #b3c2d0;
  --color-text: #0f1a24;
  --color-text-muted: #4a5c6e;
  --color-text-faint: #8496a6;
  --color-text-inverse: #ffffff;
  --color-primary: #0b8fa3;
  --color-primary-hover: #0a7d8f;
  --color-primary-active: #086777;
  --color-primary-dim: #b3e2ea;
  --color-primary-glow: rgba(11, 143, 163, 0.12);
  --color-gold: #b47c15;
  --color-gold-dim: #e4d3a8;
  --color-success: #2f9d5f;
  --shadow-sm: 0 1px 3px rgba(15, 26, 36, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 26, 36, 0.08);
  --shadow-lg: 0 24px 60px rgba(15, 26, 36, 0.12);
  --shadow-glow: 0 0 40px var(--color-primary-glow);
}

/* ---------- BASE ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}
img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}
ul[role='list'] {
  list-style: none;
}
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  text-wrap: balance;
  line-height: 1.08;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}
p {
  text-wrap: pretty;
}
a {
  color: inherit;
  text-decoration: none;
}
::selection {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
button {
  cursor: pointer;
  background: none;
  border: none;
}
table {
  border-collapse: collapse;
  width: 100%;
}
a,
button,
input,
textarea,
select,
.card,
.tier-row {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ---------- LAYOUT ---------- */
.wrap {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}
.wrap--default {
  max-width: var(--content-default);
}
.wrap--narrow {
  max-width: var(--content-narrow);
}
section {
  padding-block: clamp(3.5rem, 7vw, 7rem);
}
.section-divider {
  border: 0;
  border-top: 1px solid var(--color-divider);
}

/* Eyebrow / kicker */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.kicker::before {
  content: '';
  width: 1.75rem;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.6;
}
.kicker--gold {
  color: var(--color-gold);
}
.kicker--gold::before {
  background: var(--color-gold);
}
.kicker--center {
  justify-content: center;
}

.section-head {
  max-width: 780px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section-head--center {
  margin-inline: auto;
  text-align: center;
}
.section-head h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.section-head p {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  max-width: 60ch;
}
.section-head--center p {
  margin-inline: auto;
}

/* ---------- HEADER / NAV ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition:
    border-color 0.3s var(--ease),
    background 0.3s var(--ease),
    transform 0.35s var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--color-divider);
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
}
.site-header.hidden {
  transform: translateY(-100%);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 4.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.brand__logo {
  color: var(--color-primary);
}
.brand__word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  list-style: none;
}
.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding-block: 0.5rem;
  position: relative;
}
.nav__links a:hover,
.nav__links a[aria-current='page'] {
  color: var(--color-text);
}
.nav__links a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.theme-toggle {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-border-strong);
}
.nav__toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  place-items: center;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn svg {
  width: 1.05em;
  height: 1.05em;
}
.btn--primary {
  background: var(--color-primary);
  color: #04252b;
  box-shadow: 0 0 0 rgba(34, 199, 222, 0);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}
.btn--ghost {
  border-color: var(--color-border-strong);
  color: var(--color-text);
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--sm {
  padding: 0.55rem 1rem;
  font-size: var(--text-xs);
}
.btn--lg {
  padding: 0.9rem 1.75rem;
  font-size: var(--text-base);
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-sm);
}
.text-link svg {
  width: 1em;
  height: 1em;
  transition: transform var(--transition-interactive);
}
.text-link:hover {
  color: var(--color-primary-hover);
}
.text-link:hover svg {
  transform: translateX(3px);
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  padding-top: clamp(8rem, 14vw, 12rem);
  padding-bottom: clamp(4rem, 8vw, 7rem);
  overflow: hidden;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--color-border) 55%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-border) 55%, transparent) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 70% at 70% 20%, #000 25%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 70% 20%, #000 25%, transparent 75%);
  opacity: 0.5;
  pointer-events: none;
}
.hero__glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 55vw;
  height: 55vw;
  max-width: 700px;
  max-height: 700px;
  background: radial-gradient(circle, var(--color-primary-glow), transparent 62%);
  filter: blur(20px);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero__descriptor {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}
.hero__descriptor span {
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface);
}
.hero h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
}
.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}
.hero__sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-8);
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ---------- GENERIC PAGE HERO ---------- */
.page-hero {
  position: relative;
  padding-top: clamp(9rem, 14vw, 12rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  overflow: hidden;
}
.page-hero__glow {
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 900px;
  height: 500px;
  background: radial-gradient(ellipse at center, var(--color-primary-glow), transparent 65%);
  filter: blur(20px);
  pointer-events: none;
}
.page-hero__inner {
  position: relative;
  max-width: 820px;
}
.page-hero h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-5);
}
.page-hero p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 62ch;
}

/* ---------- CARDS ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2rem);
  height: 100%;
}
.card--hover:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.card--accent {
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-border));
  background: linear-gradient(160deg, color-mix(in srgb, var(--color-primary) 6%, var(--color-surface)), var(--color-surface));
}
.card__icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-primary-dim);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}
.card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.card p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.grid {
  display: grid;
  gap: var(--space-5);
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ---------- PALVO STACK ROW ---------- */
.stack-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}
.stack-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
}
.stack-item__letter {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  display: grid;
  place-items: center;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-primary-dim);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.stack-item--gold .stack-item__letter {
  color: var(--color-gold);
  border-color: var(--color-gold-dim);
}
.stack-item h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}
.stack-item p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ---------- WITHOUT / WITH COMPARE ---------- */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
.compare__col {
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  border: 1px solid var(--color-border);
}
.compare__col--without {
  background: var(--color-surface-offset);
}
.compare__col--with {
  background: linear-gradient(160deg, color-mix(in srgb, var(--color-primary) 8%, var(--color-surface)), var(--color-surface));
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-border));
}
.compare__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.compare__col--without .compare__label {
  color: var(--color-text-faint);
}
.compare__col--with .compare__label {
  color: var(--color-primary);
}
.compare__col h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-5);
}
.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.compare-list li {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-muted);
}
.compare-list li svg {
  flex-shrink: 0;
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.25rem;
}
.compare__col--without .compare-list svg {
  color: var(--color-text-faint);
}
.compare__col--with .compare-list svg {
  color: var(--color-primary);
}
.compare__col--with .compare-list li {
  color: var(--color-text);
}

/* ---------- STAT BAND ---------- */
.stat-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}
.stat {
  text-align: center;
}
.stat__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.stat__note {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: 0.15rem;
}

/* ---------- SPLIT (asymmetric two-column) ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.split--reverse .split__media {
  order: -1;
}
.split__body h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.split__body > p {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
}
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.feature-list li {
  display: flex;
  gap: var(--space-4);
}
.feature-list .fl-icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background: var(--color-primary-glow);
  color: var(--color-primary);
}
.feature-list .fl-icon svg {
  width: 1.15rem;
  height: 1.15rem;
}
.feature-list h4 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: 0.15rem;
}
.feature-list p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ---------- LOOP DIAGRAM ---------- */
.loop {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  counter-reset: step;
}
.loop__step {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.loop__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.5;
  margin-bottom: var(--space-3);
}
.loop__step h3 {
  font-size: var(--text-base);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.loop__step p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.loop__arrow {
  position: absolute;
  right: -1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-border-strong);
  z-index: 2;
}
.loop__step:last-child .loop__arrow {
  display: none;
}

/* ---------- TIER TABLE ---------- */
.tier-table {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.tier-head,
.tier-row {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 2fr 1fr;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  align-items: start;
}
.tier-head {
  background: var(--color-surface-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  border-bottom: 1px solid var(--color-border);
}
.tier-row {
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.tier-row:last-child {
  border-bottom: 0;
}
.tier-row:hover {
  background: var(--color-surface-offset);
}
.tier-row--cloud {
  background: linear-gradient(90deg, color-mix(in srgb, var(--color-gold) 6%, var(--color-surface)), var(--color-surface));
}
.tier-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
}
.tier-name span {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-top: 0.25rem;
}
.tier-latency {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.tier-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.tier-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
}
.tier-row--cloud .tier-status {
  color: var(--color-gold);
}

/* ---------- CHANNELS (orchestrated) ---------- */
.channels {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
.channel {
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--color-surface);
}
.channel__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}
.channel p {
  font-weight: 500;
  font-size: var(--text-base);
}

/* ---------- PIPELINE (detect->remove) ---------- */
.pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: var(--space-3);
}
.pipeline__stage {
  flex: 1 1 0;
  min-width: 150px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  position: relative;
  text-align: center;
}
.pipeline__stage .p-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.1em;
}
.pipeline__stage h4 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin: var(--space-2) 0;
}
.pipeline__stage p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- SPEC BLOCK ---------- */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.spec {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--color-surface);
}
.spec__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}
.spec__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- STANDARDS CHIPS ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.chip {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: var(--color-surface);
}
.chip strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- BENCHMARK TABLE ---------- */
.bench-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
table.bench {
  min-width: 640px;
  font-size: var(--text-sm);
}
table.bench th,
table.bench td {
  text-align: left;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}
table.bench thead th {
  background: var(--color-surface-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  font-weight: 600;
}
table.bench tbody tr:last-child td {
  border-bottom: 0;
}
table.bench tbody td:first-child {
  font-weight: 600;
  color: var(--color-text);
}
table.bench tr.is-palvo td {
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface));
  color: var(--color-text);
}
table.bench tr.is-palvo td:first-child {
  color: var(--color-primary);
}
.yes {
  color: var(--color-success);
  font-weight: 600;
}
.no {
  color: var(--color-text-faint);
}

/* ---------- ROADMAP ---------- */
.roadmap {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}
.phase {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
}
.phase__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}
.phase__year {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.phase__title {
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}
.phase__desc {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  flex: 1;
  margin-bottom: var(--space-4);
}
.phase__stage {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-gold);
}

/* ---------- CTA BAND ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--color-primary) 40%, var(--color-border));
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, color-mix(in srgb, var(--color-primary) 10%, var(--color-surface)), var(--color-surface));
  padding: clamp(2.5rem, 5vw, 4rem);
  text-align: center;
}
.cta-band__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--color-primary-glow), transparent 60%);
  pointer-events: none;
}
.cta-band h2 {
  position: relative;
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.cta-band p {
  position: relative;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  max-width: 52ch;
  margin: 0 auto var(--space-8);
}
.cta-band__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* ---------- POSITIONING (are / are not) ---------- */
.position {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
.position__col {
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.position__col--not {
  border-color: color-mix(in srgb, var(--color-gold) 40%, var(--color-border));
}
.position__col h3 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}
.position__col--are h3 {
  color: var(--color-primary);
}
.position__col--not h3 {
  color: var(--color-gold);
}
.position-item {
  padding-block: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.position-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}
.position-item h4 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: 0.2rem;
}
.position-item p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ---------- OPERATOR UI MOCK ---------- */
.mock {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.mock__bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}
.mock__dots {
  display: flex;
  gap: 0.4rem;
}
.mock__dots span {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: var(--radius-full);
  background: var(--color-border-strong);
}
.mock__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.mock__body {
  padding: var(--space-5);
}
.mock__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.mock__metric {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.mock__metric .m-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.mock__metric .m-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-primary);
  line-height: 1.1;
  margin-top: 0.25rem;
}
.mock__log {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.9;
}
.mock__log .lg-time {
  color: var(--color-text-faint);
}
.mock__log .lg-ok {
  color: var(--color-success);
}
.mock__log .lg-act {
  color: var(--color-primary);
}

/* ---------- BLOG / RESOURCES ---------- */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.post {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.post__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.post h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.post p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  flex: 1;
  margin-bottom: var(--space-4);
}

/* ---------- CONTACT FORM ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.contact-routes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-6);
}
.contact-routes li {
  display: flex;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.contact-routes svg {
  flex-shrink: 0;
  width: 1.15rem;
  height: 1.15rem;
  color: var(--color-primary);
  margin-top: 0.2rem;
}
.form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
}
.field {
  margin-bottom: var(--space-5);
}
.field label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-2);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-base);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}
.field textarea {
  resize: vertical;
  min-height: 7rem;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.form__note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-4);
  text-align: center;
}

/* ---------- FOOTER ---------- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(2.5rem, 5vw, 4rem) var(--space-8);
  background: var(--color-surface);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
.footer-brand p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  max-width: 34ch;
  margin-top: var(--space-4);
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.footer-col a:hover {
  color: var(--color-primary);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
}
.footer-langs {
  display: flex;
  gap: var(--space-4);
}

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- MOBILE MENU ---------- */
.mobile-menu {
  position: fixed;
  inset: 4.5rem 0 auto 0;
  z-index: 99;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-6) clamp(1.25rem, 4vw, 3rem) var(--space-8);
  transform: translateY(-120%);
  transition: transform 0.35s var(--ease);
}
.mobile-menu.open {
  transform: none;
}
.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-menu a {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-lg);
  font-weight: 500;
  border-bottom: 1px solid var(--color-divider);
}
.mobile-menu .btn {
  margin-top: var(--space-5);
  width: 100%;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 960px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__media {
    display: none;
  }
  .grid-4,
  .stack-row,
  .loop,
  .channels,
  .roadmap {
    grid-template-columns: repeat(2, 1fr);
  }
  .loop__arrow {
    display: none;
  }
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .split--reverse .split__media {
    order: 0;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .tier-head {
    display: none;
  }
  .tier-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}
@media (max-width: 720px) {
  .nav__links {
    display: none;
  }
  .nav__actions .btn {
    display: none;
  }
  .nav__toggle {
    display: grid;
  }
  .grid-2,
  .grid-3,
  .grid-4,
  .stack-row,
  .loop,
  .channels,
  .compare,
  .position,
  .stat-band,
  .spec-grid,
  .roadmap,
  .post-grid,
  .footer-top {
    grid-template-columns: 1fr;
  }
  .field-row {
    grid-template-columns: 1fr;
  }
  .hero__descriptor {
    font-size: 0.7rem;
  }
}