:root {
  color-scheme: dark;
  --bg: #11120e;
  --bg-deep: #0a0b08;
  --bg-elevated: rgba(24, 28, 23, 0.9);
  --surface: rgba(32, 37, 31, 0.86);
  --surface-strong: #232920;
  --surface-soft: rgba(220, 187, 119, 0.08);
  --text: #f5eedf;
  --text-muted: #cfbea0;
  --text-faint: #8f826b;
  --line: rgba(245, 238, 223, 0.12);
  --accent: #b86b30;
  --accent-strong: #de8e4f;
  --accent-soft: rgba(184, 107, 48, 0.18);
  --accent-cool: #6bb8ad;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.28);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --nav-height: 86px;
  --container-wide: 1220px;
  --container: 1080px;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f1eadc;
  --bg-deep: #d8cebd;
  --bg-elevated: rgba(252, 248, 240, 0.92);
  --surface: rgba(255, 251, 243, 0.92);
  --surface-strong: #fff9ef;
  --surface-soft: rgba(122, 78, 35, 0.07);
  --text: #1e180f;
  --text-muted: #66523b;
  --text-faint: #8f7c64;
  --line: rgba(30, 24, 15, 0.12);
  --accent: #9a531b;
  --accent-strong: #bf6a24;
  --accent-soft: rgba(154, 83, 27, 0.12);
  --accent-cool: #0b7369;
  --shadow: 0 28px 90px rgba(74, 48, 20, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 18%, rgba(222, 142, 79, 0.18), transparent 26%),
    radial-gradient(circle at 82% 16%, rgba(107, 184, 173, 0.16), transparent 24%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    radial-gradient(circle at 20% 20%, transparent 0 84px, rgba(255, 255, 255, 0.03) 84px 85px, transparent 85px 124px, rgba(255, 255, 255, 0.025) 124px 125px, transparent 125px 164px, rgba(255, 255, 255, 0.018) 164px 165px, transparent 165px),
    radial-gradient(circle at 78% 70%, transparent 0 74px, rgba(255, 255, 255, 0.03) 74px 75px, transparent 75px 112px, rgba(255, 255, 255, 0.02) 112px 113px, transparent 113px 150px, rgba(255, 255, 255, 0.016) 150px 151px, transparent 151px);
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

code,
pre,
.eyebrow,
.section-label,
.stat-label,
.panel-kicker,
.card-kicker,
.code-title,
.step-number,
.skill-name,
.footer-copy,
.panel-chip {
  font-family: "IBM Plex Mono", monospace;
}

code {
  padding: 0.14rem 0.38rem;
  border-radius: 0.45rem;
  background: var(--surface-soft);
  color: var(--accent-strong);
}

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 30;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
}

.skip-link:focus {
  top: 1rem;
}

.container-wide,
.container {
  width: min(100% - 2rem, var(--container-wide));
  margin: 0 auto;
}

.container {
  width: min(100% - 2rem, var(--container));
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(17, 18, 14, 0.72);
  border-bottom: 1px solid var(--line);
}

html[data-theme="light"] .site-nav {
  background: rgba(241, 234, 220, 0.82);
}

.nav-inner {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-weight: 700;
}

.brand-mark {
  width: 3.2rem;
  height: 3.2rem;
  padding: 0.35rem;
  border-radius: 1rem;
  color: var(--accent-strong);
  background:
    linear-gradient(145deg, rgba(222, 142, 79, 0.18), rgba(107, 184, 173, 0.12)),
    var(--surface);
  border: 1px solid rgba(222, 142, 79, 0.22);
}

.brand-text {
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.96rem;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.theme-toggle,
.btn,
.copy-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.theme-toggle:hover,
.btn:hover,
.copy-button:hover,
.theme-toggle:focus-visible,
.btn:focus-visible,
.copy-button:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(222, 142, 79, 0.4);
}

.theme-toggle {
  border-radius: 999px;
  padding: 0.72rem 1rem;
  text-transform: lowercase;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 2.9rem;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  font-weight: 700;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff7ef;
  border-color: transparent;
  box-shadow: 0 18px 36px rgba(184, 107, 48, 0.24);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.02);
}

.hero {
  padding: 5.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 2rem;
  align-items: center;
}

.eyebrow,
.section-label {
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-cool);
}

.hero h1,
.section h2,
.site-footer .footer-brand {
  margin: 0;
  font-family: "Fraunces", serif;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero h1 {
  margin-top: 0.9rem;
  font-size: clamp(3.4rem, 7vw, 6.8rem);
  line-height: 0.96;
  max-width: 11ch;
}

.hero-lead {
  margin: 1.5rem 0 0;
  max-width: 44rem;
  font-size: clamp(1.12rem, 1.2vw, 1.34rem);
  color: var(--text);
}

.hero-sub,
.section-intro,
.card p,
.step-card p,
.skill-body,
.example-card p,
.footer-copy {
  max-width: 68ch;
  color: var(--text-muted);
}

.hero-sub {
  margin-top: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.7rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.8rem;
}

.stat {
  min-width: 10rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
}

.stat-value {
  font-size: 1.2rem;
  font-weight: 800;
}

.stat-label {
  margin-top: 0.45rem;
  font-size: 0.78rem;
  color: var(--text-faint);
}

.hero-panel {
  position: relative;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: -1.1rem;
  border-radius: calc(var(--radius-xl) + 8px);
  background:
    radial-gradient(circle at 15% 20%, rgba(222, 142, 79, 0.15), transparent 34%),
    radial-gradient(circle at 85% 24%, rgba(107, 184, 173, 0.13), transparent 28%);
  filter: blur(24px);
}

.hero-panel-inner {
  position: relative;
  padding: 1.4rem;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent),
    var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-panel-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 14% 16%, transparent 0 72px, rgba(255,255,255,0.035) 72px 73px, transparent 73px 112px, rgba(255,255,255,0.025) 112px 113px, transparent 113px),
    radial-gradient(circle at 78% 72%, transparent 0 64px, rgba(255,255,255,0.035) 64px 65px, transparent 65px 102px, rgba(255,255,255,0.02) 102px 103px, transparent 103px);
  pointer-events: none;
}

.panel-kicker,
.card-kicker,
.code-title {
  color: var(--accent-cool);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-block,
.code-block {
  margin-top: 1rem;
  padding: 1rem 1.05rem;
  border-radius: var(--radius-md);
  background: rgba(7, 9, 8, 0.54);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #f3e7d1;
  font-size: 0.94rem;
  line-height: 1.7;
}

html[data-theme="light"] .signal-block,
html[data-theme="light"] .code-block {
  background: rgba(255, 255, 255, 0.65);
  color: #23180f;
}

.hero-panel-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.panel-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.7rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.75rem;
}

.section {
  padding: 5rem 0;
}

.section h2 {
  margin-top: 0.9rem;
  font-size: clamp(2.2rem, 4.6vw, 4rem);
  line-height: 1.02;
}

.section-intro {
  margin-top: 1rem;
  font-size: 1.05rem;
}

.section-surface {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  border-block: 1px solid var(--line);
}

.comparison-grid,
.host-grid,
.example-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.card,
.step-card,
.skill-card,
.contract-card,
.example-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.card,
.example-card {
  padding: 1.4rem;
}

.card-accent {
  background:
    linear-gradient(155deg, rgba(222, 142, 79, 0.15), rgba(107, 184, 173, 0.04)),
    var(--surface);
}

.card-muted {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent),
    var(--surface);
}

.card h3,
.step-card h3,
.contract-card h3,
.example-title {
  margin: 0.55rem 0 0;
  font-size: 1.32rem;
  line-height: 1.2;
}

.bullet-list {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.bullet-list li + li {
  margin-top: 0.6rem;
}

.steps-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.step-card {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.35rem;
  align-items: start;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4.75rem;
  height: 4.75rem;
  border-radius: 1.4rem;
  background:
    linear-gradient(145deg, rgba(222, 142, 79, 0.22), rgba(107, 184, 173, 0.08)),
    rgba(255,255,255,0.03);
  border: 1px solid rgba(222, 142, 79, 0.22);
  color: var(--accent-strong);
  font-size: 1rem;
}

.code-card {
  position: relative;
  margin-top: 1rem;
}

.copy-button {
  margin-top: 0.8rem;
  padding: 0.72rem 0.95rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  font-weight: 700;
}

.copy-button[data-copy-state="done"] {
  background: rgba(107, 184, 173, 0.15);
  color: var(--accent-cool);
  border-color: rgba(107, 184, 173, 0.3);
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.skill-card {
  padding: 1.5rem;
}

.skill-card-primary {
  background:
    linear-gradient(145deg, rgba(222, 142, 79, 0.16), rgba(107, 184, 173, 0.06)),
    var(--surface);
}

.skill-name {
  color: var(--accent-strong);
  font-size: 0.98rem;
}

.skill-body {
  margin-top: 0.9rem;
}

.contract-card {
  margin-top: 1rem;
  padding: 1.5rem;
}

.contract-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.contract-item {
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  font-weight: 700;
  text-transform: lowercase;
}

.site-footer {
  padding: 2rem 0 2.8rem;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
}

.footer-brand {
  font-size: 1.35rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--text-muted);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
}

@media (max-width: 1024px) {
  .hero-grid,
  .comparison-grid,
  .host-grid,
  .example-grid,
  .skill-grid,
  .contract-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: 12ch;
  }

  .nav-links {
    display: none;
  }
}

@media (max-width: 760px) {
  .nav-inner,
  .nav-actions,
  .hero-actions,
  .hero-stats,
  .hero-panel-footer,
  .footer-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-actions .btn,
  .hero-actions .btn,
  .theme-toggle,
  .copy-button {
    width: 100%;
  }

  .step-card {
    grid-template-columns: 1fr;
  }

  .step-number {
    width: 4.2rem;
    height: 4.2rem;
  }

  .hero {
    padding-top: 4.5rem;
  }

  .section {
    padding: 4rem 0;
  }
}

@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;
  }
}