:root {
  --bg: #111214;
  --panel: #15171a;
  --panel-alt: #181b1f;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f3f4f6;
  --muted: #9ca3af;
  --muted-strong: #cbd5e1;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --radius: 18px;
  --radius-sm: 12px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

.site-header,
.landing-main,
.site-footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav a {
  text-decoration: none;
}

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

.nav-cta {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
}

.landing-main {
  padding: 56px 0 96px;
}

.hero {
  padding: 24px 0 72px;
  border-bottom: 1px solid var(--line);
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.section-copy h2,
.closing-section h2 {
  margin: 0;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.hero h1 {
  max-width: 920px;
  font-size: clamp(3rem, 7vw, 5.4rem);
}

.hero-copy,
.section-copy p,
.closing-section p,
.site-footer p {
  color: var(--muted);
  max-width: 760px;
  margin: 18px 0 0;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  border-radius: 999px;
  background: var(--text);
  color: #111214;
  text-decoration: none;
  font-weight: 700;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.primary-btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.text-link {
  color: var(--muted-strong);
  text-decoration: none;
  font-weight: 600;
}

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

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.hero-meta span {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
}

.section-block {
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}

.section-copy {
  max-width: 720px;
  margin-bottom: 32px;
}

.model-list,
.prompt-list,
.privacy-list {
  display: grid;
  gap: 16px;
}

.model-row,
.prompt-card,
.privacy-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.model-row {
  padding: 22px 24px;
}

.model-heading,
.model-detail-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.model-heading h3,
.privacy-item h3 {
  margin: 0;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.model-tag,
.prompt-label {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--panel-alt);
  border: 1px solid var(--line);
  color: var(--muted-strong);
  font-size: 0.8rem;
  font-weight: 700;
}

.model-summary {
  margin: 14px 0 18px;
  color: var(--muted);
}

.model-detail-row span {
  color: var(--muted-strong);
  font-size: 0.95rem;
}

.model-detail-row a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

.model-detail-row a:hover {
  color: var(--accent);
}

.prompt-list,
.privacy-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.prompt-card,
.privacy-item {
  padding: 22px 24px;
}

.prompt-card p,
.privacy-item p {
  margin: 14px 0 0;
  color: var(--muted);
}

.closing-section {
  padding: 88px 0 0;
}

.closing-section .primary-btn {
  margin-top: 28px;
}

.site-footer {
  padding: 28px 0 40px;
}

@media (max-width: 900px) {
  .prompt-list,
  .privacy-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero {
    padding-top: 8px;
  }

  .hero h1 {
    font-size: 2.85rem;
  }

  .model-heading,
  .model-detail-row {
    flex-direction: column;
  }

  .landing-main {
    padding-top: 32px;
  }
}

@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;
  }
}