/*
 * Another Agent Skills — Design System
 * Locked: 2026-05-28 (see design/DESIGN-LOCK.md)
 *
 * Anti-patterns enforced:
 * - No purple gradients or mesh gradients
 * - No border-radius: 999px on containers/cards
 * - No gradient text on headings
 * - No em-dashes (—) in copy
 * - No "Scroll to explore" indicators
 * - No fake terminal/product UI made of divs
 * - No pills/tags floating over images
 * - No version footers
 * - No Inter, Geist, or generic sans-serif for headings
 * - No three+ equal-sized cards in a row
 * - No hype words: "Elevate", "Seamless", "Unleash", "Supercharge"
 */

/* =========================================================
   0. CUSTOM PROPERTIES
   ========================================================= */

:root {
  --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-sans: system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;

  --transition-fast: 150ms ease;
  --transition-base: 300ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);

  --max-width: 1100px;
}

:root[data-theme="dark"] {
  --bg: #1A1A18;
  --bg-card: #222220;
  --bg-code: #1E1E1C;
  --text: #E8E6E3;
  --text-secondary: #A09E9A;
  --text-muted: #7A7772;
  --accent: #DC5C20;
  --accent-dim: rgba(220, 92, 32, 0.12);
  --border: #2C2A28;
  --border-light: #3A3835;
  --green: #3CCE1E;
}

:root[data-theme="light"] {
  --bg: #F2F0ED;
  --bg-card: #F8F7F5;
  --bg-code: #EEEDEA;
  --text: #2A2826;
  --text-secondary: #545250;
  --text-muted: #6F6C68;
  --accent: #B8450E;
  --accent-dim: rgba(184, 69, 14, 0.1);
  --border: #D8D6D2;
  --border-light: #C8C6C2;
  --green: #167A32;
}

/* =========================================================
   1. SKIP LINK
   ========================================================= */

.skip-link {
  position: fixed;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  z-index: 200;
  transition: top var(--transition-fast);
}

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

/* =========================================================
   2. SELECTION + FOCUS
   ========================================================= */

::selection {
  background: var(--accent-dim);
  color: var(--accent);
}

:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

/* =========================================================
   2. RESET
   ========================================================= */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition-base), color var(--transition-base);
  min-height: 100dvh;
}

img, svg { display: block; max-width: 100%; }

a {
  color: var(--text);
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

code {
  font-family: var(--font-mono);
}

ul { list-style: none; }

/* =========================================================
   3. UTILITY
   ========================================================= */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
}

.section__title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-2xl);
  font-variation-settings: 'opsz' 72;
}

/* =========================================================
   4. HEADER
   ========================================================= */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: background var(--transition-base);
}

.header__nav {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--space-lg);
}

.header__logo {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  flex-shrink: 0;
}

.header__links {
  display: flex;
  gap: var(--space-md);
  margin-left: auto;
}

.header__links a {
  font-size: 0.75rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.header__links a:hover {
  color: var(--text);
}

.header__github {
  display: flex;
  align-items: center;
}

.header__controls {
  display: flex;
  gap: var(--space-sm);
  margin-left: var(--space-md);
}

.header__control {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition-fast);
  line-height: 1;
}

.header__control:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.header__hamburger {
  display: none;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: none;
  transition: all var(--transition-fast);
  line-height: 1;
}

.header__hamburger:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.header__mobile {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: var(--space-md) var(--space-lg);
  z-index: 99;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform var(--transition-base),
              opacity var(--transition-base);
}

.header__mobile[aria-hidden="true"] {
  pointer-events: none;
}

.header__mobile[aria-hidden="false"] {
  transform: translateY(0);
  opacity: 1;
}

.header__mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.header__mobile-links a {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-sm) 0;
  transition: color var(--transition-fast);
}

.header__mobile-links a:hover {
  color: var(--text);
}

/* =========================================================
   5. HERO
   ========================================================= */

.hero {
  padding: 120px 0 var(--space-3xl);
}

.hero__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.hero__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.92;
  font-variation-settings: 'opsz' 72;
}

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

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 560px;
  contain: layout style;
}

.hero__flow-accent {
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  font-variation-settings: 'opsz' 72;
}

/* Terminal glow on complete */

.terminal[data-done="true"] {
  border-color: var(--accent-dim);
  box-shadow: 0 0 20px var(--accent-dim);
  transition: border-color 0.6s ease, box-shadow 0.6s ease;
}

/* Social proof */

.hero__social {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Actions */

/* Terminal */

.terminal {
  max-width: 640px;
  border: 1px solid var(--border);
  background: var(--bg-code);
  font-family: var(--font-mono);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px var(--space-md);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.terminal__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.terminal__dot--r { background: #FF5F57; }
.terminal__dot--y { background: #FFBD2E; }
.terminal__dot--g { background: #28C840; }

.terminal__title {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-left: auto;
}

.terminal__body {
  padding: var(--space-md);
  font-size: 0.8125rem;
  line-height: 1.8;
  min-height: 80px;
}

.terminal__tline {
  display: flex;
  gap: var(--space-sm);
  align-items: baseline;
}

.terminal__prompt {
  color: var(--green);
  flex-shrink: 0;
}

.terminal__typing {
  color: var(--text);
}

.terminal__cursor {
  color: var(--text);
  animation: blink 0.8s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.terminal__output {
  display: none;
  margin-top: var(--space-sm);
}

.terminal__out-line {
  opacity: 0;
  transition: opacity 0.4s ease;
  color: var(--green);
}

.terminal__out-line::before {
  content: '✓ ';
}

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

/* Lifecycle Flow — card stages */

.lifecycle-flow {
  padding: var(--space-lg) 0;
}

.lifecycle-flow__inner {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.lifecycle-flow__stage {
  border: 1px solid var(--border-light);
  background: var(--bg-card);
  padding: var(--space-sm) var(--space-md);
  transition: border-color var(--transition-fast),
              opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
  transform: translateY(8px);
  contain: layout style;
}

.lifecycle-flow__stage[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
}

.lifecycle-flow__stage:hover {
  border-color: var(--accent);
  transform: scale(1.04);
  background: var(--accent-dim);
}

.lifecycle-flow__stage[data-visible="true"]:hover {
  transform: translateY(0) scale(1.04);
}

.lifecycle-flow__name {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  line-height: 1.2;
  white-space: nowrap;
}

.lifecycle-flow__arr {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              color var(--transition-fast);
}

.lifecycle-flow__arr[data-visible="true"]:hover {
  color: var(--accent);
}

.lifecycle-flow__arr[data-visible="true"] {
  opacity: 1;
  transform: translateX(0);
}

/* Actions label */

.hero__actions-label {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  font-variation-settings: 'opsz' 72;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero__install {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  background: var(--bg-code);
}

.hero__code {
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--green);
  word-break: break-all;
}

.hero__copy {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-md);
  border-left: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.hero__copy:hover {
  color: var(--text);
  background: var(--accent-dim);
}

.hero__copy[data-copied="true"] {
  color: var(--green);
}

.hero__gh-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.hero__gh-link:hover {
  color: var(--accent);
}

.section__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 560px;
  margin-bottom: var(--space-xl);
}

/* =========================================================
   5b. PROBLEM
   ========================================================= */

.problem {
  padding: var(--space-3xl) 0;
}

.problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin: var(--space-2xl) 0;
}

.problem__card {
  border-left: 3px solid var(--accent);
  padding: var(--space-lg) var(--space-lg) var(--space-lg) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.problem__card-title {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.problem__card-desc {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.problem__quote {
  max-width: 700px;
  margin: var(--space-2xl) auto;
  text-align: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-variation-settings: 'opsz' 18;
}

.problem__quote cite {
  display: block;
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-style: normal;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.problem__conclusion {
  text-align: center;
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: var(--space-lg);
}

[data-reveal] .problem__card,
[data-reveal] .problem__quote,
[data-reveal] .problem__conclusion {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-revealed="true"] .problem__card,
[data-revealed="true"] .problem__quote,
[data-revealed="true"] .problem__conclusion {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .problem__card:nth-child(1) { transition-delay: 0ms; }
[data-revealed="true"] .problem__card:nth-child(2) { transition-delay: 100ms; }
[data-revealed="true"] .problem__card:nth-child(3) { transition-delay: 200ms; }
[data-revealed="true"] .problem__quote { transition-delay: 300ms; }
[data-revealed="true"] .problem__conclusion { transition-delay: 400ms; }

@media (max-width: 768px) {
  .problem__grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   5c. HOW IT WORKS
   ========================================================= */

.howitworks {
  padding: var(--space-3xl) 0;
}

.howitworks__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.howitworks__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              border-color var(--transition-fast);
}

[data-revealed="true"] .howitworks__card {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .howitworks__card:nth-child(1) { transition-delay: 0ms; }
[data-revealed="true"] .howitworks__card:nth-child(2) { transition-delay: 100ms; }
[data-revealed="true"] .howitworks__card:nth-child(3) { transition-delay: 200ms; }
[data-revealed="true"] .howitworks__card:nth-child(4) { transition-delay: 300ms; }
[data-revealed="true"] .howitworks__card:nth-child(5) { transition-delay: 400ms; }
[data-revealed="true"] .howitworks__card:nth-child(6) { transition-delay: 500ms; }

.howitworks__card:hover {
  border-color: var(--accent);
}

.howitworks__phase {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.05em;
  font-variation-settings: 'opsz' 72;
}

.howitworks__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.howitworks__skills {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent);
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.howitworks__skills code {
  background: var(--accent-dim);
  padding: 2px 6px;
  white-space: nowrap;
}

.howitworks__conclusion {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-top: var(--space-xl);
  font-variation-settings: 'opsz' 18;
}

@media (max-width: 768px) {
  .howitworks__grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   5d. ENFORCEMENT
   ========================================================= */

.enforcement {
  padding: var(--space-3xl) 0;
}

.section__title--accent {
  color: var(--accent);
  margin-top: calc(var(--space-xs) * -1);
}

.enforcement__levels {
  max-width: 600px;
  margin: var(--space-xl) auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.enforcement__level {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  border: 1px solid var(--border);
  background: var(--bg-card);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              border-color var(--transition-fast);
}

[data-revealed="true"] .enforcement__level {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .enforcement__level:nth-child(1) { transition-delay: 0ms; }
[data-revealed="true"] .enforcement__level:nth-child(3) { transition-delay: 200ms; }
[data-revealed="true"] .enforcement__level:nth-child(5) { transition-delay: 400ms; }
[data-revealed="true"] .enforcement__level:nth-child(7) { transition-delay: 600ms; }

[data-revealed="true"] .enforcement__level--weak {
  opacity: 0.6;
}

.enforcement__level--weak {
  border-color: var(--border);
}

.enforcement__level--mid {
  border-color: var(--border);
}

.enforcement__level--strong {
  border-color: var(--accent);
}

.enforcement__level-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 24px;
}

.enforcement__level-content {
  flex: 1;
}

.enforcement__level-title {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-xs);
}

.enforcement__level-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.enforcement__check {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--green);
  font-weight: 700;
}

.enforcement__arrow {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--text-muted);
  padding: var(--space-sm) 0;
}

.enforcement__incident {
  text-align: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: var(--space-xl);
  font-variation-settings: 'opsz' 18;
}

.enforcement__conclusion {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: var(--space-md);
  font-variation-settings: 'opsz' 18;
}

.enforcement__stats {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.enforcement__stats-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.enforcement__stats-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@media (max-width: 768px) {
  .enforcement__level {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

/* =========================================================
   5e. PHILOSOPHY
   ========================================================= */

.philosophy {
  padding: var(--space-3xl) 0;
}

.philosophy__list {
  list-style: none;
  padding: 0;
  max-width: 700px;
  margin: var(--space-xl) auto 0;
}

.philosophy__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-revealed="true"] .philosophy__item {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .philosophy__item:nth-child(1) { transition-delay: 0ms; }
[data-revealed="true"] .philosophy__item:nth-child(2) { transition-delay: 100ms; }
[data-revealed="true"] .philosophy__item:nth-child(3) { transition-delay: 150ms; }
[data-revealed="true"] .philosophy__item:nth-child(4) { transition-delay: 200ms; }
[data-revealed="true"] .philosophy__item:nth-child(5) { transition-delay: 250ms; }
[data-revealed="true"] .philosophy__item:nth-child(6) { transition-delay: 300ms; }
[data-revealed="true"] .philosophy__item:nth-child(7) { transition-delay: 350ms; }

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

.philosophy__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  min-width: 24px;
  padding-top: 4px;
}

.philosophy__text {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  color: var(--text);
  line-height: 1.6;
  font-variation-settings: 'opsz' 18;
}

.philosophy__compact {
  max-width: 700px;
  margin: var(--space-xl) auto 0;
  text-align: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-variation-settings: 'opsz' 18;
}

@media (max-width: 768px) {
  .philosophy__text {
    font-size: 1rem;
  }
}

/* =========================================================
   5f. COMPATIBLE AGENTS
   ========================================================= */

.compatible {
  padding: var(--space-3xl) 0;
}

.compatible__grid {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.compatible__agent {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-lg);
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              border-color var(--transition-fast);
}

[data-revealed="true"] .compatible__agent {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .compatible__agent:nth-child(1) { transition-delay: 0ms; }
[data-revealed="true"] .compatible__agent:nth-child(2) { transition-delay: 50ms; }
[data-revealed="true"] .compatible__agent:nth-child(3) { transition-delay: 100ms; }
[data-revealed="true"] .compatible__agent:nth-child(4) { transition-delay: 150ms; }
[data-revealed="true"] .compatible__agent:nth-child(5) { transition-delay: 200ms; }
[data-revealed="true"] .compatible__agent:nth-child(6) { transition-delay: 250ms; }
[data-revealed="true"] .compatible__agent:nth-child(7) { transition-delay: 300ms; }
[data-revealed="true"] .compatible__agent:nth-child(8) { transition-delay: 350ms; }

.compatible__agent:hover {
  border-color: var(--accent);
}

.compatible__stack {
  text-align: center;
  margin-top: var(--space-xl);
}

.compatible__stack-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--space-sm);
  font-variation-settings: 'opsz' 72;
}

.compatible__stack-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.compatible__stack-detail {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .compatible__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .compatible__grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   5g. SKILLS GRID
   ========================================================= */

.skills {
  padding: var(--space-3xl) 0;
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.skills__category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-lg);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              border-color var(--transition-fast);
}

[data-revealed="true"] .skills__category {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .skills__category:nth-child(1) { transition-delay: 0ms; }
[data-revealed="true"] .skills__category:nth-child(2) { transition-delay: 50ms; }
[data-revealed="true"] .skills__category:nth-child(3) { transition-delay: 100ms; }
[data-revealed="true"] .skills__category:nth-child(4) { transition-delay: 150ms; }
[data-revealed="true"] .skills__category:nth-child(5) { transition-delay: 200ms; }
[data-revealed="true"] .skills__category:nth-child(6) { transition-delay: 250ms; }
[data-revealed="true"] .skills__category:nth-child(7) { transition-delay: 300ms; }
[data-revealed="true"] .skills__category:nth-child(8) { transition-delay: 350ms; }
[data-revealed="true"] .skills__category:nth-child(9) { transition-delay: 400ms; }
[data-revealed="true"] .skills__category:nth-child(10) { transition-delay: 450ms; }
[data-revealed="true"] .skills__category:nth-child(11) { transition-delay: 500ms; }
[data-revealed="true"] .skills__category:nth-child(12) { transition-delay: 550ms; }

.skills__category:hover {
  border-color: var(--accent);
}

.skills__category--wide {
  grid-column: span 3;
}

.skills__cat-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.skills__cat-list {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-secondary);
  line-height: 1.8;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.skills__cat-list code {
  background: var(--accent-dim);
  padding: 2px 6px;
  white-space: nowrap;
}

.skills__stats {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: var(--space-xl);
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .skills__grid {
    grid-template-columns: 1fr;
  }
  .skills__category--wide {
    grid-column: span 1;
  }
}

/* =========================================================
   5h. QUICK START
   ========================================================= */

.quickstart {
  padding: var(--space-3xl) 0;
}

.quickstart__code {
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: var(--space-lg);
  margin-top: var(--space-xl);
  overflow-x: auto;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-revealed="true"] .quickstart__code {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .quickstart__code:nth-child(2) { transition-delay: 100ms; }
[data-revealed="true"] .quickstart__code:nth-child(4) { transition-delay: 300ms; }

.quickstart__code pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.quickstart__code code {
  color: var(--text);
}

.quickstart__then {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: var(--space-xl);
  text-align: center;
}

.quickstart__conclusion {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-top: var(--space-lg);
}

@media (max-width: 768px) {
  .quickstart__code {
    padding: var(--space-md);
  }
  .quickstart__code pre {
    font-size: 0.75rem;
  }
}

/* =========================================================
   5i. FAQ
   ========================================================= */

.faq {
  padding: var(--space-3xl) 0;
}

.faq__list {
  max-width: 700px;
  margin-top: var(--space-xl);
}

.faq__item {
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-revealed="true"] .faq__item {
  opacity: 1;
  transform: translateY(0);
}

[data-revealed="true"] .faq__item:nth-child(1) { transition-delay: 0ms; }
[data-revealed="true"] .faq__item:nth-child(2) { transition-delay: 100ms; }
[data-revealed="true"] .faq__item:nth-child(3) { transition-delay: 150ms; }
[data-revealed="true"] .faq__item:nth-child(4) { transition-delay: 200ms; }
[data-revealed="true"] .faq__item:nth-child(5) { transition-delay: 250ms; }
[data-revealed="true"] .faq__item:nth-child(6) { transition-delay: 300ms; }

.faq__question {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  padding: var(--space-lg) 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--accent);
  transition: transform var(--transition-fast);
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding: 0 0 var(--space-lg) var(--space-lg);
}

@media (max-width: 768px) {
  .faq__question {
    font-size: 0.9375rem;
  }
}

/* =========================================================
   6. SECTIONS (shared)
   ========================================================= */

/* =========================================================
   6b. REFERENCES
   ========================================================= */

.references {
  padding: var(--space-3xl) 0;
}

.references__list {
  list-style: decimal;
  padding-left: var(--space-lg);
  max-width: 700px;
}

.references__list li {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.references__list li em {
  font-style: italic;
}

.references__list li a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.references__list li a:hover {
  border-bottom-color: var(--accent);
}

/* =========================================================
   7. FOOTER
   ========================================================= */

.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-2xl) 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.footer__links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--text);
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* =========================================================
   8. RESPONSIVE
   ========================================================= */

@media (max-width: 768px) {
  .header__links {
    display: none;
  }

  .header__hamburger {
    display: block;
  }

  .header__mobile {
    display: block;
  }

  .header__controls {
    margin-left: auto;
  }

  .hero {
    padding: 100px 0 var(--space-2xl);
  }

  .hero__title {
    font-size: clamp(2.25rem, 10vw, 3.5rem);
  }

  .hero__actions {
    gap: var(--space-md);
  }

  .lifecycle-flow__stage {
    padding: var(--space-xs) var(--space-sm);
  }

  .lifecycle-flow__name {
    font-size: 0.6875rem;
  }

  .lifecycle-flow__arr {
    width: 10px;
    height: 10px;
  }

  .section__title {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .hero__code {
    font-size: 0.75rem;
    padding: var(--space-sm);
  }

  .terminal__body {
    font-size: 0.75rem;
    padding: var(--space-sm);
  }

  .terminal__tline {
    flex-wrap: wrap;
  }

  .terminal__typing {
    word-break: break-all;
  }

  .footer__links {
    gap: var(--space-sm);
  }
}

/* =========================================================
   9. REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* =========================================================
   10. PRINT
   ========================================================= */

@media print {
  body {
    background: white;
    color: black;
  }

  .header {
    display: none;
  }

  .skip-link {
    display: none;
  }

  .terminal,
  .lifecycle-flow,
  .hero__actions-label,
  .hero__actions,
  .hero__social {
    opacity: 1 !important;
    transform: none !important;
    box-shadow: none !important;
  }

  .lifecycle-flow__stage,
  .lifecycle-flow__arr {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* =========================================================
   11. CONTAINMENT (performance)
   ========================================================= */

section {
  contain: layout style;
}

/* Learn More Links */
.section__learn-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-lg);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}
.section__learn-more:hover {
  color: var(--text);
}
.section__learn-more::after {
  content: "→";
  transition: transform var(--transition-fast);
}
.section__learn-more:hover::after {
  transform: translateX(3px);
}