/* ═══════════════════════════════════════════════════════
   CLAUDE OPUS 4.6 — Landing Page Styles
   Typography: Instrument Serif + Instrument Sans + JetBrains Mono
   Aesthetic: Editorial tech — Apple precision meets Bloomberg data
   ═══════════════════════════════════════════════════════ */

/* ─── Reset ─────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ─── Design Tokens ─────────────────────────────────── */
:root {
  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Instrument Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  /* Type Scale (rem) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;
  --text-hero: clamp(3rem, 8vw, 7.5rem);

  /* 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;

  /* Layout */
  --max-width: 75rem;
  --nav-height: 3.75rem;

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 800ms;
  --duration-slower: 1200ms;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 62.4375rem;
}

/* ─── Dark Theme (Default) ──────────────────────────── */
[data-theme="dark"] {
  --color-bg: #0a0a0b;
  --color-bg-raised: #141416;
  --color-bg-elevated: #1c1c20;
  --color-bg-hover: #232328;
  --color-surface: #1a1a1e;
  --color-surface-elevated: #242429;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.15);
  --color-text-primary: #f5f5f4;
  --color-text-secondary: #a1a1a6;
  --color-text-tertiary: #6b6b70;
  --color-accent: #e8a849;
  --color-accent-soft: rgba(232, 168, 73, 0.12);
  --color-accent-muted: rgba(232, 168, 73, 0.25);
  --color-accent-hover: #f0b85a;
  --color-success: #34d399;
  --color-danger: #f87171;
  --color-bar-accent: #e8a849;
  --color-bar-competitor: #6b6b70;
  --color-bar-previous: #4a4a50;
  --color-card-bg: rgba(255, 255, 255, 0.03);
  --color-card-border: rgba(255, 255, 255, 0.06);
  --color-card-featured-bg: rgba(232, 168, 73, 0.04);
  --color-card-featured-border: rgba(232, 168, 73, 0.15);
  --color-nav-bg: rgba(10, 10, 11, 0.85);
  --color-grain-opacity: 0.03;
  --shadow-card: 0 0.0625rem 0.1875rem rgba(0, 0, 0, 0.3), 0 0.0625rem 0.125rem rgba(0, 0, 0, 0.2);
  --shadow-card-hover: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.4);
}

/* ─── Light Theme ───────────────────────────────────── */
[data-theme="light"] {
  --color-bg: #faf9f7;
  --color-bg-raised: #ffffff;
  --color-bg-elevated: #f5f4f1;
  --color-bg-hover: #eeecea;
  --color-surface: #ffffff;
  --color-surface-elevated: #f8f7f5;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.15);
  --color-text-primary: #1a1a1e;
  --color-text-secondary: #5c5c63;
  --color-text-tertiary: #8e8e96;
  --color-accent: #c47f1a;
  --color-accent-soft: rgba(196, 127, 26, 0.08);
  --color-accent-muted: rgba(196, 127, 26, 0.18);
  --color-accent-hover: #a86c15;
  --color-success: #059669;
  --color-danger: #dc2626;
  --color-bar-accent: #c47f1a;
  --color-bar-competitor: #b0b0b6;
  --color-bar-previous: #d4d4d8;
  --color-card-bg: rgba(0, 0, 0, 0.02);
  --color-card-border: rgba(0, 0, 0, 0.06);
  --color-card-featured-bg: rgba(196, 127, 26, 0.04);
  --color-card-featured-border: rgba(196, 127, 26, 0.18);
  --color-nav-bg: rgba(250, 249, 247, 0.85);
  --color-grain-opacity: 0.015;
  --shadow-card: 0 0.0625rem 0.1875rem rgba(0, 0, 0, 0.06), 0 0.0625rem 0.125rem rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.08);
}

/* ─── Base ──────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  transition: background-color var(--duration-slow) var(--ease-out-expo),
              color var(--duration-slow) var(--ease-out-expo);
  overflow-x: hidden;
}

em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-accent);
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
}

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

/* ─── Skip Link ─────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 200;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #0a0a0b;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top var(--duration-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ─── Navigation ────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-nav-bg);
  backdrop-filter: blur(1.25rem) saturate(180%);
  -webkit-backdrop-filter: blur(1.25rem) saturate(180%);
  border-bottom: 0.0625rem solid var(--color-border);
  transition: background-color var(--duration-slow) var(--ease-out-expo),
              border-color var(--duration-slow) var(--ease-out-expo);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
}

.nav__logo-mark {
  color: var(--color-accent);
}

.nav__logo-accent {
  color: var(--color-accent);
}

.nav__tagline {
  font-size: 0.625rem;
  font-weight: 400;
  color: var(--color-text-tertiary);
  letter-spacing: 0.03em;
  margin-left: var(--space-3);
  padding-left: var(--space-3);
  border-left: 0.0625rem solid var(--color-border);
  line-height: 1.2;
  opacity: 0.7;
  max-width: 10rem;
}

@media (max-width: 48rem) {
  .nav__tagline {
    display: none;
  }
}

.nav__links {
  display: flex;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
  letter-spacing: 0.01em;
}

.nav__link:hover {
  color: var(--color-text-primary);
}

/* ─── Nav Actions ───────────────────────────────────── */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ─── Hamburger Menu ────────────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.3125rem;
  width: 2.25rem;
  height: 2.25rem;
  border: 0.0625rem solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-raised);
  cursor: pointer;
  padding: 0.5rem;
  transition: border-color var(--duration-fast), background-color var(--duration-fast);
}

.nav__hamburger:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.nav__hamburger-line {
  display: block;
  width: 100%;
  height: 0.125rem;
  background: var(--color-text-secondary);
  border-radius: 0.0625rem;
  transition: transform var(--duration-fast), opacity var(--duration-fast);
}

.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(1) {
  transform: translateY(0.4375rem) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-line:nth-child(3) {
  transform: translateY(-0.4375rem) rotate(-45deg);
}

/* ─── Theme Toggle ──────────────────────────────────── */
.theme-toggle {
  width: 2.25rem;
  height: 2.25rem;
  border: 0.0625rem solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-raised);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast);
  color: var(--color-text-secondary);
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

[data-theme="dark"] .theme-toggle__icon--moon { display: none; }
[data-theme="light"] .theme-toggle__icon--sun { display: none; }

/* ─── Hero ──────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-32) var(--space-6) var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero__grain {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  opacity: var(--color-grain-opacity);
  pointer-events: none;
}

.hero__content {
  max-width: 56.25rem;
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.hero__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border: 0.0625rem solid var(--color-accent-muted);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.hero__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  letter-spacing: 0.05em;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-8);
}

.hero__title-line {
  display: block;
}

.hero__title-line--accent {
  color: var(--color-accent);
  font-style: italic;
}

.hero__verdict {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-style: italic;
  color: var(--color-accent);
  line-height: 1.5;
  max-width: 37.5rem;
  margin: 0 auto var(--space-4);
  letter-spacing: -0.01em;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 37.5rem;
  margin: 0 auto var(--space-12);
}

/* Hero Stats */
.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1;
}

.hero__stat-unit {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-accent);
}

.hero__stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: var(--space-2);
}

.hero__stat-divider {
  width: 0.0625rem;
  height: 2.5rem;
  background: var(--color-border);
}

/* Hero CTA */
.hero__cta {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* Hero Scroll Indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  animation: hero-scroll-fade 2s ease-in-out infinite;
}

.hero__scroll-dot {
  animation: hero-scroll-dot 2s ease-in-out infinite;
}

@keyframes hero-scroll-fade {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

@keyframes hero-scroll-dot {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(0.5rem); opacity: 0; }
}

/* ─── Buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 0.6875rem 1.5rem;
  border-radius: var(--radius-full);
  border: 0.0625rem solid transparent;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out-quart);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  text-shadow: 0 0.0625rem 0.125rem rgba(0, 0, 0, 0.2);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-0.0625rem);
  box-shadow: 0 0.25rem 0.75rem var(--color-accent-muted);
}

.btn--ghost {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--color-text-tertiary);
  background: var(--color-bg-hover);
}

.btn--secondary {
  border-color: var(--color-border);
  color: var(--color-text-primary);
  background: var(--color-bg-raised);
}

.btn--secondary:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.btn--large {
  padding: 0.875rem 2rem;
  font-size: var(--text-base);
}

/* ─── Section Base ──────────────────────────────────── */
.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-32) var(--space-6);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  display: block;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, var(--text-6xl));
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.section__desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 37.5rem;
  margin: 0 auto;
  line-height: 1.7;
}

/* ─── Benchmark Cards ───────────────────────────────── */
.benchmarks {
  background: var(--color-bg);
  border-top: 0.0625rem solid var(--color-border);
}

.benchmark-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.benchmark-card {
  background: var(--color-card-bg);
  border: 0.0625rem solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.benchmark-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-0.125rem);
}

.benchmark-card--featured {
  grid-column: span 2;
  background: var(--color-card-featured-bg);
  border-color: var(--color-card-featured-border);
}

.benchmark-card--wide {
  grid-column: span 2;
}

.benchmark-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.benchmark-card__label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.benchmark-card__badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border: 0.0625rem solid var(--color-accent-muted);
  padding: 0.1875rem 0.5rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

.benchmark-card__badge--gold {
  color: var(--color-accent);
}

.benchmark-card__note {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--space-6);
  line-height: 1.5;
}

/* Bar Charts */
.bar-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

.bar-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  min-width: 6.25rem;
  text-align: right;
  white-space: nowrap;
}

.bar-track {
  flex: 1;
  height: 1.75rem;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}

.bar {
  height: 100%;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--space-3);
  width: 0;
  transition: width var(--duration-slower) var(--ease-out-expo);
}

.bar--accent {
  background: linear-gradient(90deg, var(--color-bar-accent), var(--color-accent-hover));
}

.bar--competitor {
  background: var(--color-bar-competitor);
}

.bar--previous {
  background: var(--color-bar-previous);
}

.bar-value {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  text-shadow: 0 0.0625rem 0.125rem rgba(0, 0, 0, 0.3);
}

/* Elo Comparison */
.elo-comparison {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

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

.elo-item__model {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  min-width: 6.25rem;
  text-align: right;
}

.elo-item--highlight .elo-item__model {
  color: var(--color-accent);
  font-weight: 600;
}

.elo-item__bar-wrap {
  flex: 1;
  height: 2rem;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.elo-item__bar {
  height: 100%;
  width: 0;
  border-radius: var(--radius-sm);
  background: var(--color-bar-competitor);
  transition: width var(--duration-slower) var(--ease-out-expo);
}

.elo-item--highlight .elo-item__bar {
  background: linear-gradient(90deg, var(--color-bar-accent), var(--color-accent-hover));
}

.elo-item__delta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  min-width: 4.375rem;
}

/* Donut Chart */
.benchmark-card__donut {
  display: flex;
  justify-content: center;
  padding: var(--space-4) 0;
}

.donut-chart {
  width: 8.75rem;
  height: 8.75rem;
}

.donut-chart__bg {
  stroke: var(--color-bg-elevated);
}

.donut-chart__fill {
  stroke: var(--color-accent);
  transition: stroke-dashoffset var(--duration-slower) var(--ease-out-expo);
}

.donut-chart__text {
  fill: var(--color-text-primary);
}

.donut-chart__value {
  font-family: var(--font-mono);
  font-size: 1.625rem;
  font-weight: 600;
}

.donut-chart__unit {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.donut-chart__sublabel {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  fill: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Multiplier */
.benchmark-card__multiplier {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-4) 0;
}

.multiplier {
  display: flex;
  align-items: baseline;
}

.multiplier__value {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-accent);
}

.multiplier__x {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-style: italic;
  color: var(--color-accent);
}

.multiplier__domains {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.multiplier__domains span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  padding: 0.1875rem 0.5rem;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  width: fit-content;
}

/* ─── Features ──────────────────────────────────────── */
.features {
  border-top: 0.0625rem solid var(--color-border);
  background: var(--color-bg-raised);
  transition: background-color var(--duration-slow) var(--ease-out-expo);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.feature-card {
  background: var(--color-card-bg);
  border: 0.0625rem solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.feature-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-0.125rem);
}

.feature-card--large {
  grid-column: span 2;
}

.feature-card__icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  margin-bottom: var(--space-5);
}

.feature-card__title {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.feature-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Effort Levels */
.feature-card__effort {
  margin-top: var(--space-8);
}

.effort-levels {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 0.0625rem solid var(--color-border);
}

.effort-level {
  flex: 1;
  text-align: center;
  padding: var(--space-3) var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

.effort-level--active {
  background: var(--color-accent-soft);
  border: 0.0625rem solid var(--color-accent-muted);
  margin: -0.0625rem;
}

.effort-level__dot {
  display: block;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-text-tertiary);
  margin: 0 auto var(--space-2);
}

.effort-level--active .effort-level__dot {
  background: var(--color-accent);
  box-shadow: 0 0 0.5rem var(--color-accent-muted);
}

.effort-level__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-primary);
}

.effort-level__desc {
  display: block;
  font-size: 0.6875rem;
  color: var(--color-text-tertiary);
  margin-top: 0.125rem;
}

/* Context Comparison */
.feature-card__comparison {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.context-bar {
  height: 2rem;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.context-bar__fill {
  height: 100%;
  display: flex;
  align-items: center;
  padding-left: var(--space-3);
  border-radius: var(--radius-sm);
  width: var(--width);
  transition: width var(--duration-slower) var(--ease-out-expo);
}

.context-bar__fill--old {
  background: var(--color-bar-previous);
}

.context-bar__fill--new {
  background: linear-gradient(90deg, var(--color-bar-accent), var(--color-accent-hover));
}

.context-bar__fill span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  text-shadow: 0 0.0625rem 0.125rem rgba(0, 0, 0, 0.3);
}

/* ─── Comparison Table ──────────────────────────────── */
.compare {
  border-top: 0.0625rem solid var(--color-border);
}

.compare-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 0.0625rem solid var(--color-card-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.compare-table thead {
  position: sticky;
  top: 0;
  z-index: 1;
}

.compare-table th {
  padding: var(--space-5) var(--space-6);
  text-align: left;
  font-weight: 500;
  background: var(--color-surface-elevated);
  border-bottom: 0.0625rem solid var(--color-border);
  white-space: nowrap;
}

.compare-table__feature {
  width: 40%;
}

.compare-table__model {
  width: 30%;
}

.compare-table__model-name {
  display: block;
  font-weight: 600;
  font-size: var(--text-base);
}

.compare-table__model-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.compare-table__model--new .compare-table__model-name {
  color: var(--color-accent);
}

.compare-table td {
  padding: var(--space-4) var(--space-6);
  border-bottom: 0.0625rem solid var(--color-border);
  vertical-align: middle;
}

.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.compare-table tbody tr {
  transition: background-color var(--duration-fast);
}

.compare-table tbody tr:hover {
  background: var(--color-bg-hover);
}

.compare-table__highlight {
  font-weight: 500;
  color: var(--color-text-primary);
}

.compare-table__badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-full);
  margin-left: var(--space-2);
  vertical-align: middle;
  letter-spacing: 0.02em;
}

/* ─── Pricing ───────────────────────────────────────── */
.pricing {
  border-top: 0.0625rem solid var(--color-border);
  background: var(--color-bg-raised);
  transition: background-color var(--duration-slow) var(--ease-out-expo);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 50rem;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-card-bg);
  border: 0.0625rem solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.pricing-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card-hover);
}

.pricing-card--featured {
  background: var(--color-card-featured-bg);
  border-color: var(--color-card-featured-border);
}

.pricing-card__badge {
  position: absolute;
  top: -0.6875rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-bg);
  border: 0.0625rem solid var(--color-accent-muted);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card__header {
  margin-bottom: var(--space-8);
}

.pricing-card__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  margin-bottom: var(--space-2);
}

.pricing-card__context {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.pricing-card__prices {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 0.0625rem solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.pricing-card__amount {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 600;
}

.pricing-card--featured .pricing-card__amount {
  color: var(--color-accent);
}

.pricing-card__per {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.pricing-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  flex: 1;
}

.pricing-card__features li {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding-left: var(--space-6);
  position: relative;
}

.pricing-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ─── Use Cases ─────────────────────────────────────── */
.use-cases {
  border-top: 0.0625rem solid var(--color-border);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.use-case-card {
  padding: var(--space-8);
  border: 0.0625rem solid var(--color-card-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.use-case-card:hover {
  border-color: var(--color-accent-muted);
  background: var(--color-card-featured-bg);
  transform: translateY(-0.125rem);
}

.use-case-card__number {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-style: italic;
  color: var(--color-accent);
  opacity: 0.4;
  line-height: 1;
  display: block;
  margin-bottom: var(--space-4);
}

.use-case-card__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.use-case-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ─── CTA ───────────────────────────────────────────── */
.cta {
  border-top: 0.0625rem solid var(--color-border);
  background: var(--color-bg-raised);
  transition: background-color var(--duration-slow) var(--ease-out-expo);
}

.cta .section__inner {
  padding: var(--space-32) var(--space-6);
}

.cta__content {
  text-align: center;
  max-width: 37.5rem;
  margin: 0 auto;
}

.cta__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, var(--text-5xl));
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.cta__desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

.cta__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}

.cta__model-id {
  margin-top: var(--space-8);
}

.cta__model-id code {
  font-size: var(--text-sm);
  padding: 0.375rem 0.75rem;
  background: var(--color-bg);
  border: 0.0625rem solid var(--color-border);
  border-radius: var(--radius-full);
}

/* ─── Footer ────────────────────────────────────────── */
.footer {
  border-top: 0.0625rem solid var(--color-border);
  padding: var(--space-10) var(--space-6);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer__text {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-2);
}

.footer__text a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 0.125rem;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  opacity: 0.6;
}

/* ─── Animations ────────────────────────────────────── */
[data-animate] {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-animate="stagger"] > * {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

[data-animate="stagger"].is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Responsive ────────────────────────────────────── */
@media (max-width: 64rem) {
  .benchmark-grid {
    grid-template-columns: 1fr;
  }

  .benchmark-card--featured,
  .benchmark-card--wide {
    grid-column: span 1;
  }

  .use-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 48rem) {
  .nav__hamburger {
    display: flex;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-nav-bg);
    backdrop-filter: blur(1.25rem) saturate(180%);
    -webkit-backdrop-filter: blur(1.25rem) saturate(180%);
    border-bottom: 0.0625rem solid var(--color-border);
    padding: var(--space-4) var(--space-6);
    gap: 0;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__link {
    padding: var(--space-3) 0;
    border-bottom: 0.0625rem solid var(--color-border);
    font-size: var(--text-base);
  }

  .nav__link:last-child {
    border-bottom: none;
  }

  .hero__stats {
    gap: var(--space-5);
  }

  .hero__stat-value {
    font-size: var(--text-2xl);
  }

  .hero__stat-divider {
    height: 1.875rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature-card--large {
    grid-column: span 1;
  }

  .effort-levels {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .effort-level {
    flex-basis: calc(50% - var(--space-2));
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
  }

  .compare-table {
    font-size: var(--text-xs);
  }

  .compare-table th,
  .compare-table td {
    padding: var(--space-3) var(--space-4);
  }

  .bar-label {
    min-width: 4.375rem;
    font-size: 0.625rem;
  }
}

@media (max-width: 30rem) {
  .hero__stats {
    flex-direction: column;
    gap: var(--space-6);
  }

  .hero__stat-divider {
    width: 2.5rem;
    height: 0.0625rem;
  }

  .hero__cta {
    flex-direction: column;
    align-items: center;
  }

  .btn--large {
    width: 100%;
    max-width: 18.75rem;
  }
}

/* ─── Reduced Motion ────────────────────────────────── */
@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;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
  }

  [data-animate="stagger"] > * {
    opacity: 1;
    transform: none;
  }

  .bar {
    transition: none;
  }
}

/* ─── Print ─────────────────────────────────────────── */
@media print {
  .nav, .theme-toggle, .hero__scroll-indicator, .hero__grain, .nav__hamburger {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .hero {
    min-height: auto;
    padding: 2rem 0;
  }
}