/* =========================================================
   THE FUTURE IS ULTRA BRIGHT — design tokens & components
   ========================================================= */

:root,
[data-theme='dark'] {
  /* ---- Type scale ---- */
  --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, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 0.4rem + 8vw, 8.5rem);

  /* ---- Spacing (4px system) ---- */
  --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;

  /* ---- Surfaces — deep cosmic navy ---- */
  --color-bg: oklch(0.08 0.014 262);
  --color-surface: oklch(0.11 0.017 262);
  --color-surface-2: oklch(0.135 0.018 262);
  --color-surface-offset: oklch(0.16 0.02 260);
  --color-surface-offset-2: oklch(0.19 0.02 260);
  --color-divider: oklch(1 0 0 / 0.08);
  --color-border: oklch(1 0 0 / 0.12);

  /* ---- Text ---- */
  --color-text: oklch(0.96 0.008 90);
  --color-text-muted: oklch(0.72 0.02 85);
  --color-text-faint: oklch(0.5 0.018 85);
  --color-text-inverse: oklch(0.1 0.015 262);

  /* ---- Primary accent — ultra bright gold ---- */
  --color-primary: oklch(0.8 0.155 84);
  --color-primary-hover: oklch(0.86 0.15 86);
  --color-primary-active: oklch(0.72 0.16 82);
  --color-primary-highlight: oklch(0.28 0.06 84);

  /* ---- Data-viz accents (chart use only) ---- */
  --color-chart-2: oklch(0.72 0.11 55);
  --color-chart-3: oklch(0.68 0.05 250);
  --color-chart-4: oklch(0.75 0.03 90);
  --color-success: oklch(0.72 0.14 150);
  --color-error: oklch(0.68 0.17 25);

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

  /* ---- Transitions ---- */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* ---- Shadows (cool-dark tone) ---- */
  --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 20px 60px oklch(0 0 0 / 0.55);
  --shadow-glow: 0 0 60px oklch(0.8 0.155 84 / 0.18);

  /* ---- Content widths ---- */
  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1240px;
  --content-full: 100%;

  /* ---- Fonts ---- */
  --font-display: 'Clash Display', 'General Sans', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'General Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'Menlo', monospace;
}

/* ---- LIGHT MODE — the daylight variant: the brightness made manifest ---- */
[data-theme='light'] {
  --color-bg: oklch(0.975 0.012 88);
  --color-surface: oklch(0.99 0.008 88);
  --color-surface-2: oklch(0.955 0.014 86);
  --color-surface-offset: oklch(0.93 0.018 84);
  --color-surface-offset-2: oklch(0.9 0.02 82);
  --color-divider: oklch(0.15 0.02 262 / 0.1);
  --color-border: oklch(0.15 0.02 262 / 0.14);

  --color-text: oklch(0.2 0.03 262);
  --color-text-muted: oklch(0.42 0.03 262);
  --color-text-faint: oklch(0.6 0.02 262);
  --color-text-inverse: oklch(0.97 0.01 88);

  --color-primary: oklch(0.5 0.135 62);
  --color-primary-hover: oklch(0.44 0.14 60);
  --color-primary-active: oklch(0.38 0.13 58);
  --color-primary-highlight: oklch(0.9 0.06 80);

  --color-chart-2: oklch(0.52 0.12 40);
  --color-chart-3: oklch(0.45 0.08 250);
  --color-chart-4: oklch(0.45 0.02 262);
  --color-success: oklch(0.48 0.12 150);
  --color-error: oklch(0.5 0.18 25);

  --shadow-sm: 0 1px 2px oklch(0.3 0.02 80 / 0.08);
  --shadow-md: 0 8px 24px oklch(0.3 0.02 80 / 0.1);
  --shadow-lg: 0 20px 60px oklch(0.3 0.02 80 / 0.14);
  --shadow-glow: 0 0 60px oklch(0.5 0.135 62 / 0.15);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
  }
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    color-scheme: light;
  }
}

/* =========================================================
   LAYOUT PRIMITIVES
   ========================================================= */

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

section {
  position: relative;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

.presented-by {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4) var(--space-1) var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: oklch(from var(--color-surface) l c h / 0.6);
  backdrop-filter: blur(6px);
  margin-bottom: var(--space-6);
}
.presented-by img {
  width: 26px;
  height: 22px;
  object-fit: contain;
  flex-shrink: 0;
}
.presented-by span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  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-5);
}
.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 10px 2px oklch(from var(--color-primary) l c h / 0.6);
}

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

.section-title {
  font-size: var(--text-2xl);
  font-weight: 500;
  max-width: 18ch;
  margin-bottom: var(--space-5);
}
.section-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 62ch;
  font-family: var(--font-body);
  font-weight: 400;
}

/* =========================================================
   BACKGROUND SYSTEM — starfield + scroll-linked brightness
   ========================================================= */

#starfield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.brightness-veil {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(
    ellipse 140% 90% at 50% 100%,
    oklch(from var(--color-primary) l c h / calc(var(--scroll-glow, 0) * 0.16)) 0%,
    transparent 65%
  );
  transition: background 400ms linear;
}

main,
header,
footer {
  position: relative;
  z-index: 2;
}

/* =========================================================
   HEADER
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-block: var(--space-4);
  background: oklch(from var(--color-bg) l c h / 0);
  backdrop-filter: blur(0px);
  transition:
    background 300ms var(--ease-out),
    backdrop-filter 300ms var(--ease-out),
    border-color 300ms var(--ease-out),
    padding 300ms var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: oklch(from var(--color-bg) l c h / 0.72);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--color-divider);
  padding-block: var(--space-3);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
}
.brand svg {
  width: 30px;
  height: 30px;
  color: var(--color-primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.main-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  position: relative;
}
.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-text);
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-interactive);
}
.main-nav a:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle,
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.theme-toggle:hover,
.nav-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}
.theme-toggle svg,
.nav-toggle svg {
  width: 18px;
  height: 18px;
}
.nav-toggle {
  display: none;
}

@media (max-width: 760px) {
  .main-nav {
    position: fixed;
    inset: 64px var(--space-4) auto var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
    padding: var(--space-3);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition:
      opacity 220ms var(--ease-out),
      transform 220ms var(--ease-out);
  }
  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .main-nav a {
    width: 100%;
    padding: var(--space-3) var(--space-3);
    border-radius: var(--radius-sm);
  }
  .main-nav a:hover {
    background: var(--color-surface-offset);
  }
  .main-nav a::after {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: clamp(var(--space-24), 18vw, var(--space-32));
  padding-bottom: var(--space-20);
  overflow: hidden;
  background: var(--color-bg);
  transition: background 400ms linear;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background-image: url('./assets/hero-singularity.webp');
  background-size: cover;
  background-position: center 70%;
  opacity: 0.9;
  mix-blend-mode: screen;
  z-index: -1;
}

.hero-content {
  position: relative;
}

.hero h1 {
  font-size: var(--text-hero);
  font-weight: 500;
  line-height: 1.02;
  max-width: 15ch;
}
.hero h1 .accent {
  color: var(--color-primary);
  font-style: italic;
}

.hero .section-lede {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  max-width: 46ch;
}

.hero-meta {
  margin-top: var(--space-12);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.hero-meta-item .num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}
.hero-meta-item .label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.scroll-cue {
  position: absolute;
  bottom: var(--space-8);
  left: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.scroll-cue svg {
  width: 14px;
  height: 14px;
  animation: bob 1.8s var(--ease-in-out) infinite;
}
@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(5px);
  }
}

/* Splitting.js char reveal for hero */
.split-chars .char {
  opacity: 0;
  filter: blur(6px);
  animation: char-reveal 0.7s var(--ease-out) forwards;
  animation-delay: calc(var(--char-index) * 22ms + 150ms);
}
@keyframes char-reveal {
  to {
    opacity: 1;
    filter: blur(0);
  }
}

/* =========================================================
   SCROLL REVEAL (JS-driven via IntersectionObserver — no CLS)
   ========================================================= */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 700ms var(--ease-out),
    transform 700ms var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.no-js .reveal {
  opacity: 1;
  transform: none;
}

/* =========================================================
   THE CURVE (philosophy section)
   ========================================================= */

.curve-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-16);
  align-items: center;
}
@media (max-width: 860px) {
  .curve-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

.pull-quote {
  margin-top: var(--space-8);
  padding-left: var(--space-6);
  border-left: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text);
  max-width: 46ch;
}
.pull-quote cite {
  display: block;
  margin-top: var(--space-3);
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.03em;
}
.pull-quote cite a {
  color: var(--color-text-faint);
  text-decoration: underline;
  text-decoration-color: var(--color-divider);
}

.curve-visual {
  background: linear-gradient(180deg, var(--color-surface), var(--color-surface-2));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}
.curve-visual canvas {
  width: 100%;
  height: 240px;
}
.curve-visual .curve-caption {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
}
.curve-visual .curve-caption a {
  color: var(--color-text-faint);
}

/* =========================================================
   KPI / STAT CARDS
   ========================================================= */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-1);
  margin-top: var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-border);
}
@media (max-width: 900px) {
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 520px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: var(--color-surface);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.stat-card .stat-sparkline {
  width: 100%;
  height: 40px;
  margin-top: var(--space-2);
}
.stat-card .stat-multiplier {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.stat-card .stat-range {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}
.stat-card .stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.stat-card .stat-source {
  margin-top: auto;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.stat-card .stat-source a {
  color: var(--color-text-faint);
  text-decoration: underline;
  text-decoration-color: var(--color-divider);
}
.stat-card .stat-source a:hover {
  color: var(--color-primary);
}

/* =========================================================
   MARKET CHART
   ========================================================= */

.chart-panel {
  margin-top: var(--space-16);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
  box-shadow: var(--shadow-md);
}
.chart-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.chart-panel-head h3 {
  font-size: var(--text-lg);
  font-weight: 500;
}
.chart-panel-head .chart-source {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.chart-panel-head .chart-source a {
  color: var(--color-text-faint);
}
.chart-canvas-wrap {
  position: relative;
  height: 340px;
}

/* =========================================================
   QUANTUM SECTION — full-bleed image band
   ========================================================= */

.bleed-band {
  position: relative;
  padding-block: clamp(var(--space-20), 14vw, var(--space-32));
  overflow: hidden;
}
.bleed-band .bleed-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.bleed-band .bleed-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}
.bleed-band .bleed-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    var(--color-bg) 0%,
    oklch(from var(--color-bg) l c h / 0.55) 18%,
    oklch(from var(--color-bg) l c h / 0.55) 82%,
    var(--color-bg) 100%
  );
}

.big-numbers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-10) var(--space-12);
  margin-top: var(--space-14);
}
@media (max-width: 760px) {
  .big-numbers {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}
.big-number {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
}
.big-number .value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.big-number .desc {
  margin-top: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 42ch;
}
.big-number .desc a {
  color: var(--color-text-muted);
  text-decoration-color: var(--color-divider);
}

/* =========================================================
   TIMELINE (singularity)
   ========================================================= */

.timeline {
  margin-top: var(--space-16);
  position: relative;
  padding-left: var(--space-8);
  border-left: 1px solid var(--color-border);
}
.timeline-item {
  position: relative;
  padding-bottom: var(--space-12);
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(var(--space-8) * -1 - 4.5px);
  top: 4px;
  width: 9px;
  height: 9px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-bg), 0 0 14px 2px oklch(from var(--color-primary) l c h / 0.7);
}
.timeline-item .year {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.04em;
}
.timeline-item h3 {
  margin-top: var(--space-2);
  font-size: var(--text-lg);
  font-weight: 500;
}
.timeline-item p {
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 60ch;
}
.timeline-item .src {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.timeline-item .src a {
  color: var(--color-text-faint);
}
.timeline-item.is-future .year {
  color: var(--color-text);
}
.timeline-item.is-future::before {
  background: var(--color-text);
  animation: pulse-dot 2.4s var(--ease-in-out) infinite;
}
@keyframes pulse-dot {
  0%,
  100% {
    box-shadow: 0 0 0 4px var(--color-bg), 0 0 14px 2px oklch(from var(--color-primary) l c h / 0.7);
  }
  50% {
    box-shadow: 0 0 0 4px var(--color-bg), 0 0 26px 6px oklch(from var(--color-primary) l c h / 0.9);
  }
}

/* =========================================================
   SOURCES GRID
   ========================================================= */

.source-grid {
  margin-top: var(--space-12);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
@media (max-width: 900px) {
  .source-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .source-grid {
    grid-template-columns: 1fr;
  }
}
.source-card {
  display: block;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-decoration: none;
  color: var(--color-text);
}
.source-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.source-card .source-tag {
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}
.source-card .source-title {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}
.source-card .source-meta {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* =========================================================
   PRODUCTS GRID
   ========================================================= */

.product-grid {
  margin-top: var(--space-12);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}
@media (max-width: 720px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}
.product-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-decoration: none;
  color: var(--color-text);
  transition:
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.product-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.product-card .product-tag {
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}
.product-card .product-name {
  margin-top: var(--space-3);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-text);
}
.product-card .product-desc {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text-muted);
  flex-grow: 1;
}
.product-card .product-link {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
}

/* =========================================================
   CLOSING
   ========================================================= */

.closing {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: var(--space-24);
}
.closing .bleed-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.closing .bleed-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
[data-theme='dark'] .closing .bleed-bg img {
  opacity: 0.85;
}
.closing .bleed-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--color-bg) 0%, transparent 35%, transparent 70%, var(--color-bg) 100%);
}
.closing::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    100deg,
    oklch(0.05 0.01 262 / 0.88) 0%,
    oklch(0.05 0.01 262 / 0.72) 30%,
    oklch(0.05 0.01 262 / 0.28) 56%,
    transparent 76%
  );
}
.closing-content {
  text-align: left;
  max-width: 46ch;
}
.closing h2 {
  font-size: var(--text-3xl);
  font-weight: 500;
  color: oklch(0.97 0.01 88);
  text-shadow: 0 2px 30px oklch(0 0 0 / 0.5);
}
.closing p {
  margin-top: var(--space-5);
  font-size: var(--text-lg);
  color: oklch(0.88 0.015 88 / 0.95);
  text-shadow: 0 2px 20px oklch(0 0 0 / 0.5);
}
.closing .btn {
  margin-top: var(--space-8);
}

/* =========================================================
   BUTTONS
   ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: var(--text-sm);
}
.footer-brand svg {
  width: 22px;
  height: 22px;
  color: var(--color-primary);
}
.footer-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 46ch;
}
.footer-meta a {
  color: var(--color-text-faint);
}
.footer-credit {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  white-space: nowrap;
}
.footer-credit img {
  width: 28px;
  height: 24px;
  object-fit: contain;
  flex-shrink: 0;
}

/* =========================================================
   MISC
   ========================================================= */

.visually-hidden-source {
  font-size: var(--text-xs);
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-surface-offset-2);
  border-radius: var(--radius-full);
}