/* LingGuo marketing homepage: dark theme (beats lingguo-minimal light overrides). */
html.home-dark {
  color-scheme: dark;
  --bg: #06060a;
  --bg2: #0b0b12;
  --surface: #12121a;
  --elevated: #171722;
  --hover: #1d1d2a;
  --text: #f4f4f7;
  --muted: #a4a4b0;
  --tertiary: #7a7a88;
  --purple: #7c3aed;
  --purple2: #8b5cf6;
  --purple3: #c4b5fd;
  --soft: rgba(124, 58, 237, 0.14);
  --glow: rgba(124, 58, 237, 0.32);
  --border: rgba(255, 255, 255, 0.09);
  --border-hover: rgba(255, 255, 255, 0.18);
  --good: #34d399;
  --warn: #f59e0b;
  --bad: #fb7185;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 56px;
  background: #06060a;
  color: #f4f4f7;
}

html.home-dark,
html.home-dark body {
  background: #06060a;
  color: #f4f4f7;
}

html.home-dark body:before {
  display: block;
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 45% at 78% 0%, rgba(124, 58, 237, 0.18), transparent 55%),
    radial-gradient(ellipse 50% 40% at 8% 30%, rgba(59, 130, 246, 0.06), transparent 50%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 28%);
}

html.home-dark.theme-light,
html.home-dark.theme-light body {
  color-scheme: dark;
  background: #06060a;
  color: #f4f4f7;
}

/* Nav: glass dark capsule (not grey-on-white) */
html.home-dark .marketing {
  background: transparent;
  min-height: 100vh;
}

html.home-dark .marketing-nav {
  position: sticky;
  top: 12px;
  z-index: 30;
  width: min(1180px, calc(100% - 32px));
  height: var(--nav-h);
  margin: 12px auto 0;
  padding: 0 14px 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(196, 181, 253, 0.16);
  border-radius: 14px;
  background: rgba(8, 8, 14, 0.78);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

html.home-dark .brand,
html.home-dark .brand-identity strong {
  color: #f4f4f7;
}

html.home-dark .marketing-links {
  color: var(--muted);
}

html.home-dark .marketing-links a:hover {
  color: var(--text);
}

html.home-dark .marketing-actions .ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
}

html.home-dark .marketing-actions .ghost:hover {
  background: var(--soft);
  color: var(--text);
}

/* Primary / secondary CTA links (not only <button>) */
html.home-dark a.primary,
html.home-dark .hero-actions a.primary,
html.home-dark .marketing-cta a.primary,
html.home-dark .marketing-actions a.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 20px;
  border-radius: 10px;
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
  border: 1px solid #8b5cf6;
  color: #fff !important;
  font-weight: 650;
  text-decoration: none;
  box-shadow: 0 10px 28px rgba(124, 58, 237, 0.32);
  transition: transform 140ms var(--ease), box-shadow 160ms var(--ease), background 160ms var(--ease);
}

html.home-dark a.primary:hover,
html.home-dark .hero-actions a.primary:hover,
html.home-dark .marketing-cta a.primary:hover {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  box-shadow: 0 14px 34px rgba(124, 58, 237, 0.42);
  transform: translateY(-1px);
}

html.home-dark a.secondary,
html.home-dark .hero-actions a.secondary,
html.home-dark .marketing-cta a.secondary,
html.home-dark .section-more a.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 18px;
  border-radius: 10px;
  background: rgba(18, 18, 28, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--text) !important;
  font-weight: 600;
  text-decoration: none;
  box-shadow: none;
  transition: transform 140ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

html.home-dark a.secondary:hover,
html.home-dark .hero-actions a.secondary:hover,
html.home-dark .marketing-cta a.secondary:hover {
  background: var(--hover);
  border-color: rgba(196, 181, 253, 0.35);
  transform: translateY(-1px);
}

html.home-dark .marketing button.primary,
html.home-dark .auth-view button.primary {
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
  border-color: #8b5cf6;
  color: #fff;
  box-shadow: 0 10px 28px rgba(124, 58, 237, 0.28);
}

html.home-dark .marketing button.secondary,
html.home-dark .auth-view button.secondary {
  background: rgba(18, 18, 28, 0.65);
  border-color: rgba(255, 255, 255, 0.16);
  color: var(--text);
}

html.home-dark .marketing button.ghost,
html.home-dark .auth-view button.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
}

/* Hero: side-by-side on desktop, fit first viewport at 1280x800 */
html.home-dark .hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 40px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 36px;
  min-height: calc(100vh - var(--nav-h) - 36px);
  box-sizing: border-box;
}

html.home-dark .hero-copy .eyebrow {
  color: var(--purple3);
}

html.home-dark .hero-copy h1 {
  max-width: 620px;
  margin: 12px 0 14px;
  font-size: clamp(40px, 5.2vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.055em;
  font-weight: 550;
  color: var(--text);
}

html.home-dark .hero-copy h1 .accent {
  color: var(--purple3);
}

html.home-dark .hero-lead,
html.home-dark .hero-copy p {
  max-width: 500px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
  white-space: normal;
}

html.home-dark .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

html.home-dark .hero-code {
  border: 1px solid rgba(196, 181, 253, 0.14);
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(14, 14, 22, 0.95), rgba(8, 8, 14, 0.9));
  overflow: hidden;
  min-height: 280px;
  max-height: min(420px, calc(100vh - var(--nav-h) - 120px));
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(124, 58, 237, 0.08);
}

html.home-dark .hero-code .code-top {
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
}

html.home-dark .hero-code .code-tabs button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  box-shadow: none;
}

html.home-dark .hero-code .code-tabs button.active {
  border-color: var(--border-hover);
  background: var(--surface);
  color: var(--text);
}

html.home-dark .hero-code pre,
html.home-dark .hero-code code {
  background: transparent;
  color: #d9d4ff;
}

html.home-dark .hero-code .copy-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  box-shadow: none;
}

/* Sections / strips / FAQ / footer contrast */
html.home-dark .gift-strip {
  border-color: rgba(52, 211, 153, 0.28);
  background: linear-gradient(120deg, rgba(52, 211, 153, 0.1), rgba(124, 58, 237, 0.12));
}

html.home-dark .gift-strip p {
  color: var(--muted);
}

html.home-dark .gift-strip a {
  color: var(--purple3);
}

html.home-dark .trust-strip article,
html.home-dark .faq-list details,
html.home-dark .table-wrap,
html.home-dark .home-steps li {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

html.home-dark .trust-strip p,
html.home-dark .section-head p,
html.home-dark .faq-list details p,
html.home-dark .footer,
html.home-dark .footer .footer-meta {
  color: var(--muted);
}

html.home-dark .section-rule {
  border-top-color: var(--border);
}

html.home-dark .section-head h2,
html.home-dark .trust-strip strong,
html.home-dark .faq-list summary,
html.home-dark .home-steps strong,
html.home-dark .marketing-cta h2 {
  color: var(--text);
}

html.home-dark .model-price-table th {
  color: var(--tertiary);
  border-bottom-color: var(--border);
}

html.home-dark .model-price-table td {
  border-bottom-color: var(--border);
  color: var(--text);
}

html.home-dark .model-price-table code {
  color: var(--purple3);
}

html.home-dark .faq-list a,
html.home-dark .footer a,
html.home-dark .legal-links a {
  color: var(--purple3);
}

html.home-dark .footer {
  border-top: 1px solid var(--border);
}

html.home-dark .marketing-cta {
  text-align: center;
  padding: 88px 0 100px;
}

html.home-dark .marketing-cta .hero-actions {
  justify-content: center;
}

html.home-dark .home-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

html.home-dark .home-steps li {
  border-radius: 12px;
  padding: 16px 18px;
  display: grid;
  gap: 4px;
}

html.home-dark .home-steps span {
  color: var(--muted);
  font-size: 13px;
}

/* Auth (/register) stays dark, readable */
html.home-dark .auth-view {
  background:
    radial-gradient(circle at 50% 18%, rgba(124, 58, 237, 0.16), transparent 36%),
    #06060a;
  color: var(--text);
}

html.home-dark .auth-panel {
  background: rgba(16, 18, 28, 0.92);
  border: 1px solid var(--border);
  color: var(--text);
}

html.home-dark .auth-view .field input,
html.home-dark .auth-view .field textarea,
html.home-dark .auth-view .field select {
  background: #0d0d14;
  border-color: var(--border);
  color: var(--text);
}

html.home-dark .auth-panel p,
html.home-dark .auth-note,
html.home-dark .auth-switch {
  color: var(--muted);
}

html.home-dark .auth-switch a,
html.home-dark .register-consent a {
  color: var(--purple3);
}

html.home-dark .register-consent {
  color: var(--muted);
}

@media (max-width: 1023px) {
  html.home-dark .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 48px 0 40px;
    gap: 28px;
    align-items: start;
  }

  html.home-dark .hero-code {
    max-height: none;
    min-height: 240px;
  }
}

@media (max-width: 720px) {
  html.home-dark .marketing-nav {
    top: 8px;
    margin-top: 8px;
    height: 52px;
  }

  html.home-dark .marketing-links {
    display: none;
  }

  html.home-dark .hero-copy h1 {
    font-size: clamp(36px, 11vw, 48px);
  }

  html.home-dark .hero-actions a.primary,
  html.home-dark .hero-actions a.secondary,
  html.home-dark .marketing-cta a.primary,
  html.home-dark .marketing-cta a.secondary {
    width: 100%;
  }

  html.home-dark .trust-strip {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1024px) and (max-height: 820px) {
  html.home-dark .hero {
    padding: 16px 0 24px;
    gap: 28px;
  }

  html.home-dark .hero-copy h1 {
    font-size: clamp(36px, 4.4vw, 52px);
    margin: 8px 0 10px;
  }

  html.home-dark .hero-actions {
    margin-top: 18px;
  }

  html.home-dark .hero-code {
    min-height: 240px;
  }
}