/*
 * ─── Sudonews marketing semantics: --sn-* (site + landing)
 * Light values here; `@media (prefers-color-scheme: dark)` overrides the same names later.
 *
 * --sn-accent              Primary brand / interactive hue (aligned with app #3B82F6).
 * --sn-accent-soft        Low-alpha tint for fills and washes.
 * --sn-accent-border      Hairline accents on borders and chips.
 * --sn-glow-accent        CTA / elevated shadow halo (opaque blue).
 *
 * --sn-surface            Solid card/chrome base (#fff light / slate dark).
 * --sn-bg-base            Deepest page wash behind meshes.
 * --sn-bg-mid             Mid sky band for gradients.
 *
 * --sn-mesh-*             Frosted radial haze stops (accent / cyan / indigo / warm).
 * --sn-text-primary       Main ink (WCAG-aligned on surfaces).
 * --sn-text-secondary     Muted body copy on solid surfaces.
 * --sn-border-default     Neutral divider key (alpha on ink / surface).
 *
 * --sn-shadow-rgb          RGB triplet used in layered shadows (comma-separated, no rgb()).
 * --sn-aurora-*-core      Ambient blobs for motion.css (low chroma).
 */
:root {
  /* Premium Electric Blue — more vibrant, more aspirational */
  --sn-accent: #3b6fff;
  --sn-accent-rgb: 59, 111, 255;
  --sn-accent-purple: #7c3aed;
  --sn-accent-gradient: linear-gradient(135deg, #3b6fff 0%, #7c3aed 100%);
  --sn-accent-gradient-text: linear-gradient(135deg, #3b6fff 0%, #7c3aed 100%);
  --sn-gold: #f59e0b;
  --sn-gold-rgb: 245, 158, 11;
  --sn-rose: #e8b4b8;
  --sn-breaking: #ef4444;
  --sn-accent-soft: color-mix(in srgb, var(--sn-accent) 14%, transparent);
  --sn-accent-soft-strong: color-mix(in srgb, var(--sn-accent) 28%, transparent);
  --sn-accent-border: color-mix(in srgb, var(--sn-accent) 32%, transparent);
  --sn-glow-accent: rgba(var(--sn-accent-rgb), 0.38);
  --sn-glow-blue: 0 0 24px rgba(59, 111, 255, 0.35), 0 0 48px rgba(59, 111, 255, 0.15);
  --sn-glow-gold: 0 0 20px rgba(245, 158, 11, 0.3);

  /* Crisp light surfaces */
  --sn-surface: #ffffff;
  --sn-surface-raised: #f8fafc;
  --sn-bg-base: #f1f5f9;
  --sn-bg-mid: #e2e8f2;

  --sn-mesh-primary: color-mix(in srgb, var(--sn-accent) 20%, transparent);
  --sn-mesh-secondary: color-mix(in srgb, #0284c7 14%, transparent);
  --sn-mesh-tertiary: color-mix(in srgb, #7c3aed 16%, transparent);
  --sn-mesh-warm: color-mix(in srgb, #f59e0b 7%, transparent);

  /* Text — WCAG AA on all surfaces */
  --sn-text-primary: #0f172a;
  --sn-text-secondary: #475569;
  --sn-text-tertiary: #94a3b8;
  --sn-border-default: rgba(15, 23, 42, 0.12);
  --sn-shadow-rgb: 15, 23, 42;

  --sn-aurora-1-core: color-mix(in srgb, var(--sn-accent) 34%, transparent);
  --sn-aurora-2-core: color-mix(in srgb, #7c3aed 24%, transparent);
  --sn-aurora-3-core: color-mix(in srgb, #0ea5e9 20%, transparent);

  /* Opaque chrome */
  --sn-glass-blur: blur(20px);
  --sn-header-bg: rgba(255, 255, 255, 0.88);
  --sn-footer-bg: #0a0f1a;
  --sn-card-bg: var(--sn-surface);

  /* Premium shadow scale */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 2px 6px rgba(15, 23, 42, 0.05), 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 4px 12px rgba(15, 23, 42, 0.06), 0 16px 48px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 8px 24px rgba(15, 23, 42, 0.07), 0 32px 80px rgba(15, 23, 42, 0.12);
  --shadow-hover: 0 4px 20px rgba(59, 111, 255, 0.2), 0 16px 48px rgba(15, 23, 42, 0.1);
}

:root {
  /* Legacy aliases → semantic tokens */
  --primary: var(--sn-accent);
  --primary-soft: var(--sn-accent-soft);
  --primary-border: var(--sn-accent-border);
  --text: var(--sn-text-primary);
  --text-muted: var(--sn-text-secondary);
  /* Solid shell stops — avoids milky translucent page wash */
  --shell-from: var(--sn-surface);
  --shell-to: var(--sn-bg-mid);
  --card: var(--sn-card-bg);
  --card-border: color-mix(in srgb, var(--sn-accent) 18%, var(--sn-border-default));
  --max: 800px;
  --nav-max: 1040px;

  /* Spacing scale: 8 / 16 / 24 / 32 / 48 / 64 / 96 / 120 px @ 16px root */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 7.5rem;

  /* Motion tokens (scroll reveals + hovers) */
  --motion-reveal-duration: 600ms;
  --motion-reveal-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-stagger-step: 0.1s;
  --motion-btn-hover-duration: 180ms;
  --motion-btn-hover-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --motion-card-hover-duration: 220ms;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  /* Avoid ~1 scrollbar-width “jump” when content grows and vw-based widths reflow oddly */
  scrollbar-gutter: stable;
}

/*
 * Smooth scroll only for fine pointers: on touch, native scrolling + scroll-linked JS stay in sync.
 * Global smooth + fixed backgrounds both fight sticky/scrolly sections on iOS.
 */
@media (prefers-reduced-motion: no-preference) {
  @media (hover: hover) and (pointer: fine) {
    html {
      scroll-behavior: smooth;
    }
  }
}

body {
  margin: 0;
  font-family:
    "Inter",
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(118% 68% at 8% -10%, var(--sn-mesh-primary) 0%, transparent 58%),
    radial-gradient(94% 56% at 96% 4%, var(--sn-mesh-secondary) 0%, transparent 54%),
    radial-gradient(96% 48% at 48% 102%, var(--sn-mesh-tertiary) 0%, transparent 70%),
    linear-gradient(
      168deg,
      var(--shell-from) 0%,
      var(--sn-bg-mid) 50%,
      var(--shell-to) 100%
    );
  background-attachment: fixed;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: rgba(59, 130, 246, 0.12);
  overflow-x: hidden;
}

@media (max-width: 1024px) {
  body {
    /* Fixed backgrounds fight the compositor on iOS/Android — wrong rects + “wipes” next to sticky sections */
    background-attachment: scroll;
  }
}

body.is-nav-open {
  overflow: hidden;
  touch-action: none;
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 19;
  background: rgba(10, 15, 26, 0.52);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.22s ease,
    visibility 0.22s ease;
  pointer-events: none;
}

.nav-backdrop.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

@media (max-width: 879px) {
  body.is-nav-open .nav-backdrop.is-visible {
    z-index: 90;
  }

  body.is-nav-open .site-header {
    z-index: 100;
  }
}

@media (min-width: 880px) {
  .nav-backdrop {
    display: none !important;
  }
}

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

a:hover {
  text-decoration: underline;
}

/* “Sudo” on AI empty chat: primary → slate shader mask */
.sudo-gradient {
  display: inline;
  background: linear-gradient(
    128deg,
    #1e40af 0%,
    #2563eb 32%,
    #4f46e5 58%,
    #0ea5e9 88%,
    #38bdf8 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.sudo-hero-size {
  font-size: clamp(2.75rem, 10vw, 3.75rem);
  line-height: 1.05;
}

.sudo-inline-size {
  font-size: clamp(2rem, 5vw, 2.65rem);
  line-height: 1.1;
}

.news-word {
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.site-header {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header__inner {
  max-width: var(--nav-max);
  margin: 0 auto;
  padding-top: max(0.85rem, env(safe-area-inset-top));
  padding-bottom: 0.85rem;
  padding-left: max(1.25rem, env(safe-area-inset-left));
  padding-right: max(1.25rem, env(safe-area-inset-right));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ─── Mobile menu toggle (hidden on large screens) ─── */
.nav-toggle {
  display: none;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--card-border);
  border-radius: 12px;
  background: var(--card);
  cursor: pointer;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.nav-toggle:hover {
  border-color: var(--primary-border);
  background: var(--primary-soft);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.nav-toggle__lines {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 20px;
  height: 16px;
  pointer-events: none;
}

.nav-toggle__lines span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--text);
  transition:
    transform 0.25s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.2s ease;
  transform-origin: center;
}

.site-header.is-menu-open .nav-toggle__lines span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-menu-open .nav-toggle__lines span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.site-header.is-menu-open .nav-toggle__lines span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-logo-img {
  height: 30px;
  width: auto;
  display: block;
}

/* Wordmark logo (HTML): renders everywhere (incl. mobile Safari) */
.site-logo__wordmark {
  display: inline-flex;
  align-items: baseline;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 1.25rem;
  line-height: 1;
}

.site-logo__wordmark .logo-sudo {
  color: #0f172a;
}

.site-logo__wordmark .logo-news {
  color: #4f81ee;
}

/* SVG wordmark (legal / inner pages): same split as HTML wordmark */
.site-logo__svg .logo-sudo {
  fill: #0f172a;
}

.site-logo__svg .logo-news {
  fill: #4f81ee;
}

.site-logo--img {
  line-height: 0;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 0;
}

.site-logo__mark {
  display: block;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  transform: translateY(-0.5px);
}

.site-logo--img:hover {
  opacity: 0.92;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

@media (max-width: 879px) {
  .site-header {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: rgba(255, 255, 255, 0.96);
  }

  .site-header__inner {
    flex-wrap: nowrap;
    position: relative;
    z-index: 2;
    background: inherit;
  }

  .nav-toggle {
    display: inline-flex;
  }

  /* Full-viewport sheet: explicit height so Safari/iOS never collapses the panel */
  .site-nav {
    --nav-sheet-top: calc(
      env(safe-area-inset-top) + 0.85rem + 0.85rem + 30px + 2px
    );
    position: fixed;
    top: var(--nav-sheet-top);
    left: 0;
    right: 0;
    bottom: auto;
    width: 100%;
    max-width: 100%;
    height: calc(100vh - var(--nav-sheet-top));
    height: calc(100dvh - var(--nav-sheet-top));
    display: none;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 4px;
    margin: 0;
    padding: 12px max(1.25rem, env(safe-area-inset-left)) max(1.25rem, env(safe-area-inset-bottom))
      max(1.25rem, env(safe-area-inset-right));
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    background: #f8fafc;
    border-top: 1px solid var(--card-border);
    box-shadow: 0 -1px 0 rgba(255, 255, 255, 0.8) inset;
    z-index: 50;
    -webkit-transform: translateZ(0);
  }

  .site-header.is-menu-open .site-nav {
    display: flex;
  }

  .site-nav a,
  .site-nav .btn-nav {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    -webkit-tap-highlight-color: transparent;
  }

  .site-nav a:active,
  .site-nav .btn-nav:active {
    background: var(--primary-soft);
    border-color: var(--primary-border);
  }
}

@media (min-width: 880px) {
  .site-header__inner {
    flex-wrap: nowrap;
    gap: 0.65rem;
  }

  .nav-toggle {
    display: none !important;
  }

  .site-nav {
    position: static !important;
    top: auto !important;
    left: auto !important;
    right: auto !important;
    bottom: auto !important;
    height: auto !important;
    min-height: 0 !important;
    width: auto !important;
    max-width: none !important;
    -webkit-transform: none !important;
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    justify-content: flex-end !important;
    max-height: none !important;
    overflow: visible !important;
    padding: 0 !important;
    margin: 0 !important;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
    border-top: none !important;
    box-shadow: none !important;
    z-index: auto !important;
    white-space: nowrap !important;
  }

  .site-nav a:active,
  .site-nav .btn-nav:active {
    background: transparent;
    border-color: transparent;
  }
}

.site-nav a,
.site-nav .btn-nav {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}

.site-nav a:hover,
.site-nav .btn-nav:hover {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: var(--primary-border);
  text-decoration: none;
}

.site-nav a.is-active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

@media (max-width: 879px) {
  .site-nav a,
  .site-nav .btn-nav {
    min-height: 46px;
    padding: 0.65rem 1rem;
    font-size: 1rem;
    border-radius: 10px;
  }
}

/* Laptop/tablet landscape: keep nav in one clean row without wrapping. */
@media (min-width: 880px) and (max-width: 1240px) {
  .site-header__inner {
    gap: 0.5rem;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .site-logo__svg {
    height: 26px;
  }

  .site-nav {
    gap: 0.18rem;
  }

  .site-nav a,
  .site-nav .btn-nav {
    font-size: 0.8rem;
    padding: 0.35rem 0.52rem;
    border-radius: 999px;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 0.65rem 1.25rem;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition:
    transform 0.12s ease,
    box-shadow 0.12s ease,
    filter 0.12s ease;
}

.btn:hover {
  text-decoration: none;
  filter: brightness(1.05);
}

.btn:active {
  transform: scale(0.98);
}

@media (max-width: 767px) {
  .btn {
    min-height: 48px;
    padding: 0.75rem 1.35rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 22rem;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

.btn-primary {
  color: #fff;
  background: linear-gradient(180deg, #151b28 0%, #0a0f1a 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 1px 2px rgba(10, 15, 26, 0.06), 0 6px 16px rgba(10, 15, 26, 0.1);
}

.btn-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(10, 15, 26, 0.1);
  box-shadow: 0 1px 2px rgba(10, 15, 26, 0.04);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.75rem;
}

.site-main {
  flex: 1;
  width: 100%;
  min-width: 0;
  max-width: min(100%, 980px);
  margin: 0 auto;
  padding: 2.25rem max(1.25rem, env(safe-area-inset-left)) 3.5rem
    max(1.25rem, env(safe-area-inset-right));
  padding-bottom: max(3.5rem, calc(2rem + env(safe-area-inset-bottom)));
}

.hero {
  text-align: center;
  margin-bottom: 3.25rem;
  padding: clamp(1.35rem, 2vw, 2rem) 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.trust-strip {
  margin-top: -1.35rem;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 720px) {
  .trust-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.trust-strip__item {
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 14px;
  padding: 0.9rem 1rem;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.trust-strip__item strong {
  display: block;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

.trust-strip__item span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.process-section {
  padding: clamp(1.2rem, 2.4vw, 2rem);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 24px;
  background:
    radial-gradient(
      120% 120% at 10% -10%,
      rgba(14, 165, 233, 0.13) 0%,
      transparent 48%
    ),
    rgba(255, 255, 255, 0.72);
  box-shadow: 0 20px 52px rgba(15, 23, 42, 0.07);
}

.process-grid {
  display: grid;
  gap: var(--space-2);
}

@media (min-width: 860px) {
  .process-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.process-card {
  border: 1px solid rgba(59, 130, 246, 0.18);
  border-radius: 18px;
  padding: var(--space-3) var(--space-3) var(--space-2);
  background: linear-gradient(
    155deg,
    rgba(255, 255, 255, 0.92) 0%,
    rgba(255, 255, 255, 0.74) 100%
  );
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

.process-card__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  color: rgba(15, 23, 42, 0.78);
  font-weight: 800;
  font-size: 0.8rem;
  margin-bottom: 0.55rem;
}

.process-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.process-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero .lead {
  margin: 0 auto;
  max-width: 38rem;
  font-size: 1.125rem;
  color: var(--text-muted);
}

.hero .lead strong {
  color: var(--text);
}

.pill {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.35rem 0.9rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2563eb;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  border-radius: 999px;
}

.section {
  margin-bottom: var(--space-7);
  scroll-margin-top: clamp(4.5rem, 12vw, 5.5rem);
}

.section h2 {
  margin: 0 0 var(--space-3);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.section-intro {
  margin: 0 0 var(--space-3);
  color: var(--text-muted);
  font-size: 1.02rem;
  max-width: 42rem;
}

.sudo-block {
  padding: var(--space-3) var(--space-3);
  border-radius: 18px;
  background: var(--sn-card-bg);
  border: 1px solid var(--card-border);
  box-shadow: 0 4px 24px rgba(var(--sn-shadow-rgb), 0.08);
  margin-bottom: var(--space-3);
}

.sudo-block h3 {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 800;
}

.sudo-block p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.features,
.features-grid {
  display: grid;
  gap: var(--space-2);
}

@media (min-width: 600px) {
  .features,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .features.three,
  .features-grid.three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--sn-card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: var(--space-3) 1.4rem;
  box-shadow: 0 4px 18px rgba(var(--sn-shadow-rgb), 0.08);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.feature-card .tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: 0.4rem;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.section-logic {
  margin-top: 0.5rem;
}

.logic-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 700px) {
  .logic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.logic-card {
  background: linear-gradient(
    145deg,
    var(--sn-surface) 0%,
    var(--sn-surface-raised) 100%
  );
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 1.25rem 1.25rem 1.2rem;
  box-shadow: 0 4px 22px rgba(15, 23, 42, 0.06);
  transition:
    transform 0.22s ease,
    border-color 0.2s ease,
    box-shadow 0.22s ease;
}

.logic-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-border);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.12);
}

.logic-grid--interactive {
  gap: 0.95rem;
  grid-template-columns: 1fr !important;
  align-items: start;
  max-width: 56rem;
  margin-inline: auto;
}

.logic-accordion {
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.92) 0%,
    rgba(255, 255, 255, 0.76) 100%
  );
  border: 1px solid var(--card-border);
  border-radius: 18px;
  box-shadow: 0 4px 22px rgba(15, 23, 42, 0.06);
  overflow: hidden;
  transition:
    border-color 0.2s ease,
    box-shadow 0.22s ease,
    transform 0.22s ease;
}

.logic-accordion:hover {
  transform: translateY(-3px);
  border-color: var(--primary-border);
  box-shadow: 0 10px 28px rgba(59, 130, 246, 0.11);
}

.logic-accordion.is-open {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow:
    0 12px 32px rgba(59, 130, 246, 0.13),
    0 0 0 1px rgba(59, 130, 246, 0.06) inset;
}

.logic-accordion__summary {
  cursor: pointer;
  padding: 1.15rem 1.25rem 1rem;
  position: relative;
  border: 0;
  background: transparent;
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  text-align: left;
}

.logic-accordion__summary::after {
  content: "+";
  position: absolute;
  top: 1.1rem;
  right: 1.15rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 999px;
  border: 1px solid var(--primary-border);
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
  line-height: 1.62rem;
  text-align: center;
  transition: transform 0.2s ease;
}

.logic-accordion.is-open .logic-accordion__summary::after {
  content: "−";
  transform: rotate(180deg);
}

.logic-accordion__text {
  flex: 1;
  min-width: 0;
}

.logic-accordion__icon {
  width: 2.45rem;
  height: 2.45rem;
  min-width: 2.45rem;
  border-radius: 12px;
  border: 1px solid rgba(59, 130, 246, 0.26);
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.96) 0%,
    rgba(219, 234, 254, 0.9) 100%
  );
  color: #2563eb;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.12);
}

.logic-accordion__icon svg {
  width: 1.22rem;
  height: 1.22rem;
}

.logic-accordion__summary h3 {
  margin: 0.25rem 2rem 0.35rem 0;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.logic-accordion__summary p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.94rem;
}

.logic-accordion__content {
  border-top: 1px solid rgba(59, 130, 246, 0.14);
  padding: 0.95rem 1.25rem 1.1rem;
  display: none;
}

.logic-accordion.is-open .logic-accordion__content {
  display: block;
}

.logic-accordion.is-open .logic-accordion__icon {
  color: #6c5ce7;
  border-color: rgba(108, 92, 231, 0.35);
  background: rgba(108, 92, 231, 0.1);
  box-shadow: 0 6px 16px rgba(108, 92, 231, 0.18);
}

.logic-accordion__content p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.62;
}

.logic-card .tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.logic-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logic-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.logic-list {
  margin: 0.85rem 0 0;
  padding-left: 1rem;
  color: var(--text-muted);
}

.logic-list li {
  margin: 0 0 0.45rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.section-premium {
  padding: clamp(1.2rem, 2.5vw, 2rem);
  border-radius: 24px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  background:
    radial-gradient(
      140% 130% at 15% -10%,
      rgba(99, 102, 241, 0.13) 0%,
      transparent 46%
    ),
    radial-gradient(
      120% 120% at 95% 5%,
      rgba(14, 165, 233, 0.11) 0%,
      transparent 48%
    ),
    rgba(255, 255, 255, 0.72);
  box-shadow: 0 20px 52px rgba(15, 23, 42, 0.07);
}

.experience-grid {
  display: grid;
  gap: var(--space-2);
}

@media (min-width: 760px) {
  .experience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.experience-card {
  background: linear-gradient(
    155deg,
    rgba(255, 255, 255, 0.92) 0%,
    rgba(255, 255, 255, 0.76) 100%
  );
  border: 1px solid rgba(59, 130, 246, 0.16);
  border-radius: 18px;
  padding: var(--space-3) var(--space-3) var(--space-2);
  box-shadow: 0 8px 26px rgba(15, 23, 42, 0.07);
}

.experience-card h3 {
  margin: 0.35rem 0 0.55rem;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.experience-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.94rem;
}

.section-testimonials {
  padding: clamp(var(--space-3), 2.4vw, var(--space-4));
  border-radius: 24px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  background:
    radial-gradient(
      120% 130% at 95% -20%,
      rgba(59, 130, 246, 0.14) 0%,
      transparent 48%
    ),
    rgba(255, 255, 255, 0.74);
}

.testimonials-grid {
  display: grid;
  gap: var(--space-2);
}

@media (min-width: 860px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.testimonial-card {
  border: 1px solid rgba(59, 130, 246, 0.18);
  border-radius: 18px;
  padding: 1.15rem 1.15rem 1rem;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
}

.testimonial-card p {
  margin: 0 0 0.85rem;
  color: var(--text-muted);
  font-size: 0.93rem;
}

.testimonial-card h3 {
  margin: 0;
  font-size: 0.94rem;
}

.testimonial-card span {
  display: block;
  margin-top: 0.15rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.section-faq .logic-grid--interactive {
  max-width: 100%;
}

.cta-panel {
  text-align: center;
  padding: var(--space-5) max(1.75rem, env(safe-area-inset-left)) var(--space-5)
    max(1.75rem, env(safe-area-inset-right));
  border-radius: 22px;
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.1) 0%,
    rgba(255, 255, 255, 0.9) 100%
  );
  border: 1px solid var(--primary-border);
}

.cta-panel h2 {
  margin: 0 0 0.5rem;
}

.cta-panel p {
  margin: 0 0 var(--space-3);
  color: var(--text-muted);
}

.legal-page h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.7rem, 4.2vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.legal-page .updated {
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.legal-page h2 {
  margin: 1.75rem 0 0.65rem;
  font-size: 1.16rem;
  font-weight: 800;
}

.legal-page p,
.legal-page li {
  margin: 0 0 0.85rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.legal-page ul {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
}

.legal-page ol.legal-numbered-steps {
  margin: 0 0 1.1rem;
  padding-left: 1.5rem;
}

.legal-page ol.legal-numbered-steps > li {
  margin: 0 0 0.65rem;
  padding-left: 0.25rem;
}

.legal-page {
  max-width: 960px;
}

.legal-shell {
  border: 1px solid rgba(59, 130, 246, 0.17);
  border-radius: 22px;
  background:
    radial-gradient(
      140% 130% at 110% -20%,
      rgba(59, 130, 246, 0.15) 0%,
      transparent 52%
    ),
    rgba(255, 255, 255, 0.76);
  padding: clamp(1.25rem, 2.4vw, 2.1rem);
  box-shadow: 0 24px 58px rgba(15, 23, 42, 0.08);
}

.legal-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0.75rem 0 1.3rem;
}

.legal-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.34rem 0.72rem;
  border: 1px solid rgba(59, 130, 246, 0.24);
  background: rgba(219, 234, 254, 0.72);
  color: #1d4ed8;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.legal-note {
  margin: 1rem 0 1.2rem;
  padding: 0.8rem 0.95rem;
  border-radius: 12px;
  border: 1px solid rgba(59, 130, 246, 0.18);
  background: rgba(219, 234, 254, 0.4);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Marketing site live Flutter handset — surfaced in Privacy + Terms (#marketing-live-preview) */
section#marketing-live-preview.legal-live-preview {
  scroll-margin-top: calc(5rem + env(safe-area-inset-top, 0px));
}

.legal-live-preview__box {
  margin: 1.25rem 0 1.85rem;
  padding: 1.35rem 1.35rem 1.3rem;
  border-radius: 14px;
  border: 1px solid rgba(234, 88, 12, 0.3);
  background: linear-gradient(
    135deg,
    rgba(255, 247, 237, 0.95) 0%,
    rgba(255, 237, 213, 0.88) 100%
  );
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.65) inset;
}

.legal-live-preview__label {
  display: inline-block;
  margin: 0 0 0.6rem;
  padding: 0.2rem 0.58rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(234, 88, 12, 0.15);
  color: #c2410c;
  border: 1px solid rgba(234, 88, 12, 0.22);
}

.legal-live-preview__box p:last-child {
  margin-bottom: 0;
}

.legal-live-preview__box ul {
  margin: 0.55rem 0 0;
  padding-left: 1.2rem;
}

.legal-page code.legal-code-inline,
.legal-page .legal-shell code {
  font-size: 0.82em;
  padding: 0.12rem 0.35rem;
  border-radius: 6px;
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid rgba(15, 23, 42, 0.08);
  word-break: break-word;
}

.page-missing__code {
  margin: 0 0 0.35rem;
  font-size: clamp(2.75rem, 7vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--primary);
}

.page-missing__actions {
  margin-top: 1.25rem;
}

.legal-page section {
  margin-top: 0.25rem;
}

.legal-page strong {
  color: var(--text);
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 1.75rem;
  margin-top: 1rem;
}

.contact-card dl {
  margin: 0;
}

.contact-card dt {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-top: 1.25rem;
}

.contact-card dt:first-child {
  margin-top: 0;
}

.contact-note {
  color: var(--text-muted);
  font-style: normal;
}

.contact-card dd {
  margin: 0.35rem 0 0;
  font-size: 1rem;
}

.site-footer {
  margin-top: auto;
  padding: 1.75rem max(1.25rem, env(safe-area-inset-left))
    max(1.75rem, env(safe-area-inset-bottom))
    max(1.25rem, env(safe-area-inset-right));
  background: var(--sn-footer-bg);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-top: 1px solid var(--card-border);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.75rem;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  font-weight: 600;
  -webkit-tap-highlight-color: transparent;
}

@media (max-width: 767px) {
  .legal-page h1 {
    font-size: clamp(1.45rem, 6vw, 1.75rem);
    line-height: 1.2;
  }

  .contact-card {
    padding: 1.35rem max(1rem, env(safe-area-inset-left)) 1.5rem
      max(1rem, env(safe-area-inset-right));
  }
}

@media (prefers-color-scheme: dark) {
  html {
    color-scheme: dark;
  }

  :root {
    --sn-accent: #6390ff;
    --sn-accent-rgb: 99, 144, 255;
    --sn-accent-soft: color-mix(in srgb, var(--sn-accent) 24%, transparent);
    --sn-accent-soft-strong: color-mix(in srgb, var(--sn-accent) 34%, transparent);
    --sn-accent-border: color-mix(in srgb, var(--sn-accent) 44%, transparent);
    --sn-glow-accent: rgba(var(--sn-accent-rgb), 0.44);

    --sn-surface: #1a2438;
    --sn-surface-raised: #222e45;
    --sn-bg-base: #060a12;
    --sn-bg-mid: #0c1424;

    --sn-mesh-primary: color-mix(in srgb, var(--sn-accent) 32%, transparent);
    --sn-mesh-secondary: color-mix(in srgb, #22d3ee 18%, transparent);
    --sn-mesh-tertiary: color-mix(in srgb, #818cf8 20%, transparent);
    --sn-mesh-warm: color-mix(in srgb, #fb923c 12%, transparent);

    --sn-text-primary: #f8fafc;
    --sn-text-secondary: #cbd5e1;
    --sn-border-default: rgba(248, 250, 252, 0.14);
    --sn-shadow-rgb: 2, 6, 23;

    --sn-aurora-1-core: color-mix(in srgb, var(--sn-accent) 32%, transparent);
    --sn-aurora-2-core: color-mix(in srgb, #818cf8 22%, transparent);
    --sn-aurora-3-core: color-mix(in srgb, #38bdf8 18%, transparent);

    --sn-header-bg: rgba(10, 15, 26, 0.88);
    --sn-footer-bg: #060a12;
    --sn-card-bg: var(--sn-surface);
    --sn-text-tertiary: #64748b;
    --shadow-sm: 0 1px 3px rgba(2, 6, 23, 0.2), 0 4px 12px rgba(2, 6, 23, 0.18);
    --shadow-md: 0 2px 6px rgba(2, 6, 23, 0.22), 0 8px 24px rgba(2, 6, 23, 0.24);
    --shadow-lg: 0 4px 12px rgba(2, 6, 23, 0.24), 0 16px 48px rgba(2, 6, 23, 0.28);
    --shadow-xl: 0 8px 24px rgba(2, 6, 23, 0.28), 0 32px 80px rgba(2, 6, 23, 0.32);
    --shadow-hover: 0 4px 20px rgba(99, 144, 255, 0.3), 0 16px 48px rgba(2, 6, 23, 0.28);

    --text: var(--sn-text-primary);
    --text-muted: var(--sn-text-secondary);
    --shell-from: var(--sn-bg-base);
    --shell-to: var(--sn-bg-mid);
    --card: var(--sn-card-bg);
    --card-border: rgba(248, 250, 252, 0.14);
  }

  body {
    background:
      radial-gradient(ellipse 90% 48% at 52% -28%, rgba(255, 255, 255, 0.045) 0%, transparent 58%),
      radial-gradient(112% 70% at 10% -8%, var(--sn-mesh-primary) 0%, transparent 56%),
      radial-gradient(88% 58% at 92% 4%, var(--sn-mesh-secondary) 0%, transparent 52%),
      radial-gradient(85% 55% at 50% 102%, var(--sn-mesh-tertiary) 0%, transparent 62%),
      linear-gradient(158deg, var(--shell-from) 0%, #0f172a 46%, var(--shell-to) 100%);
  }

  .sudo-gradient {
    background: linear-gradient(
      125deg,
      #93c5fd 0%,
      #60a5fa 28%,
      #a78bfa 55%,
      #38bdf8 82%,
      #e0f2fe 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
  }

  .site-header {
    background: var(--sn-header-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  @media (max-width: 879px) {
    .site-nav {
      background: #0f172a;
      border-top-color: var(--card-border);
      box-shadow: 0 -1px 0 rgba(255, 255, 255, 0.06) inset;
    }

    .nav-toggle {
      background: var(--card);
      border-color: var(--card-border);
    }

    .nav-toggle__lines span {
      background: var(--text);
    }
  }

  .sudo-block {
    background: rgba(30, 41, 59, 0.85);
  }

  .feature-card {
    background: var(--card);
  }

  .logic-card {
    background: linear-gradient(
      145deg,
      rgba(30, 41, 59, 0.96) 0%,
      rgba(15, 23, 42, 0.88) 100%
    );
  }

  .logic-accordion {
    background: linear-gradient(
      145deg,
      rgba(30, 41, 59, 0.96) 0%,
      rgba(15, 23, 42, 0.88) 100%
    );
  }

  .logic-accordion__icon {
    background: linear-gradient(
      145deg,
      rgba(15, 23, 42, 0.92) 0%,
      rgba(30, 41, 59, 0.84) 100%
    );
    border-color: rgba(147, 197, 253, 0.24);
    color: #93c5fd;
    box-shadow: 0 4px 14px rgba(2, 6, 23, 0.42);
  }

  .logic-accordion__summary p,
  .logic-accordion__content p,
  .logic-accordion__content .logic-list,
  .logic-accordion__content .logic-list li {
    color: var(--text-muted);
  }

  .news-word {
    color: var(--text);
  }

  .hero {
    background: transparent;
    border-color: transparent;
    box-shadow: none;
  }

  .section-premium,
  .process-section,
  .section-testimonials,
  .legal-shell {
    background:
      radial-gradient(
        140% 130% at 15% -10%,
        rgba(99, 102, 241, 0.2) 0%,
        transparent 46%
      ),
      rgba(15, 23, 42, 0.82);
    border-color: rgba(147, 197, 253, 0.24);
    box-shadow: 0 22px 56px rgba(2, 6, 23, 0.42);
  }

  .experience-card {
    background: linear-gradient(
      155deg,
      rgba(30, 41, 59, 0.95) 0%,
      rgba(15, 23, 42, 0.86) 100%
    );
    border-color: rgba(147, 197, 253, 0.2);
  }

  .process-card,
  .testimonial-card,
  .trust-strip__item {
    background: linear-gradient(
      155deg,
      rgba(30, 41, 59, 0.95) 0%,
      rgba(15, 23, 42, 0.86) 100%
    );
    border-color: rgba(147, 197, 253, 0.2);
  }

  .legal-badge {
    background: rgba(30, 64, 175, 0.32);
    color: #bfdbfe;
    border-color: rgba(147, 197, 253, 0.26);
  }

  .legal-note {
    background: rgba(30, 64, 175, 0.22);
    border-color: rgba(147, 197, 253, 0.22);
  }

  .site-nav a,
  .site-nav .btn-nav {
    color: var(--text-muted);
  }

  .site-nav a:hover,
  .site-nav .btn-nav:hover {
    color: #93c5fd;
  }

  .btn-secondary {
    background: var(--card);
    color: var(--text);
    border-color: var(--card-border);
  }

  .site-logo__wordmark .logo-sudo {
    color: #f8fafc;
  }

  .site-logo__wordmark .logo-news {
    color: #4f81ee;
  }

  .site-logo__svg .logo-sudo {
    fill: #f8fafc;
  }

  .site-logo__svg .logo-news {
    fill: #4f81ee;
  }

  .site-footer {
    background: var(--sn-footer-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .cta-panel {
    background: linear-gradient(
      135deg,
      rgba(59, 130, 246, 0.18) 0%,
      rgba(30, 41, 59, 0.95) 100%
    );
  }

  .nav-backdrop {
    background: rgba(0, 0, 0, 0.52);
  }
}

/* =========================================================
   Premium Cohesive Visual System — global polish pass
   ========================================================= */
:root {
  --surface-0: var(--sn-bg-base);
  --surface-1: var(--sn-surface-raised);
  --surface-2: var(--sn-surface);
  --surface-border: var(--sn-border-default);
  --surface-border-strong: color-mix(in srgb, var(--sn-accent) 34%, var(--sn-border-default));
  --ink-strong: var(--sn-text-primary);
  --ink-body: var(--sn-text-primary);
  --ink-muted: var(--sn-text-secondary);
  --shadow-soft: 0 10px 30px rgba(var(--sn-shadow-rgb), 0.08);
  --shadow-mid: 0 18px 46px rgba(var(--sn-shadow-rgb), 0.11);
  --shadow-glow: 0 0 0 1px rgba(255, 255, 255, 0.62) inset;
  --radius-xl: 22px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --motion-reveal-duration: 720ms;
  --motion-reveal-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-btn-hover-duration: 260ms;
  --motion-btn-hover-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --motion-card-hover-duration: 320ms;
}

body {
  color: var(--ink-body);
  background:
    radial-gradient(118% 70% at 10% -8%, var(--sn-mesh-primary) 0%, transparent 56%),
    radial-gradient(90% 60% at 94% 2%, var(--sn-mesh-secondary) 0%, transparent 54%),
    radial-gradient(92% 58% at 50% 100%, var(--sn-mesh-tertiary) 0%, transparent 72%),
    radial-gradient(70% 40% at 72% 88%, var(--sn-mesh-warm) 0%, transparent 65%),
    linear-gradient(
      168deg,
      color-mix(in srgb, var(--sn-bg-mid) 94%, white) 0%,
      var(--sn-bg-base) 48%,
      var(--surface-0) 100%
    );
}

.site-main {
  max-width: min(100%, 1120px);
  padding-top: clamp(2.25rem, 5vw, 3.4rem);
  padding-bottom: max(4.2rem, calc(2.4rem + env(safe-area-inset-bottom)));
}

.section {
  margin-bottom: clamp(4.2rem, 9vw, 7rem);
}

.hero h1,
.section h2 {
  color: var(--ink-strong);
  letter-spacing: -0.042em;
}

.hero h1 {
  line-height: 1.04;
}

.section h2 {
  margin-bottom: clamp(0.9rem, 2.1vw, 1.35rem);
  font-size: clamp(1.55rem, 2.45vw, 2.1rem);
}

.hero .lead,
.section-intro,
.feature-card p,
.process-card p,
.experience-card p,
.testimonial-card p,
.logic-card p,
.logic-accordion__summary p,
.logic-accordion__content p,
.sudo-block p {
  color: var(--ink-muted);
  line-height: 1.62;
}

.site-header {
  background: var(--sn-header-bg);
  border-bottom: 1px solid var(--surface-border);
  box-shadow:
    0 14px 34px rgba(var(--sn-shadow-rgb), 0.08),
    0 1px 0 color-mix(in srgb, var(--sn-surface) 88%, white) inset;
  backdrop-filter: var(--sn-glass-blur);
  -webkit-backdrop-filter: var(--sn-glass-blur);
}

.site-nav .btn-nav {
  border: 1px solid var(--surface-border);
  background: var(--sn-surface-raised);
  box-shadow: var(--shadow-glow);
}

.btn {
  border-radius: 12px;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(140deg, #3b7dff 0%, var(--sn-accent) 52%, #0039b8 100%);
  box-shadow:
    0 10px 26px rgba(var(--sn-accent-rgb), 0.38),
    0 1px 0 rgba(255, 255, 255, 0.28) inset;
}

.btn-secondary {
  background: var(--sn-surface);
  border: 1px solid var(--surface-border-strong);
  box-shadow:
    0 8px 20px rgba(var(--sn-shadow-rgb), 0.08),
    0 1px 0 color-mix(in srgb, var(--sn-surface) 90%, white) inset;
}

.trust-strip__item,
.process-section,
.section-premium,
.section-testimonials,
.feature-card,
.process-card,
.experience-card,
.testimonial-card,
.logic-card,
.logic-accordion,
.sudo-block,
.cta-panel,
.legal-shell,
.contact-card {
  border-color: var(--surface-border) !important;
  border-radius: var(--radius-xl);
  background: linear-gradient(165deg, var(--surface-2) 0%, var(--surface-1) 100%);
  box-shadow:
    var(--shadow-soft),
    var(--shadow-glow);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.feature-card,
.process-card,
.experience-card,
.testimonial-card,
.logic-card,
.logic-accordion,
.sudo-block,
.contact-card {
  border-radius: var(--radius-lg);
}

.process-section,
.section-premium,
.section-testimonials,
.cta-panel,
.legal-shell {
  box-shadow:
    var(--shadow-mid),
    var(--shadow-glow);
}

.logic-accordion__summary::after,
.logic-accordion__icon,
.process-card__step,
.pill,
.legal-badge {
  border-color: var(--surface-border-strong);
}

.logic-accordion.is-open,
.logic-card:hover,
.logic-accordion:hover {
  border-color: var(--surface-border-strong);
}

.process-card h3,
.feature-card h3,
.experience-card h3,
.logic-card h3,
.logic-accordion__summary h3,
.testimonial-card h3,
.sudo-block h3 {
  color: var(--ink-strong);
  letter-spacing: -0.024em;
}

.site-footer {
  background: var(--sn-footer-bg);
  border-top: 1px solid var(--surface-border);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

@media (max-width: 900px) {
  .site-main {
    max-width: min(100%, 960px);
  }

  .section {
    margin-bottom: clamp(3.3rem, 10vw, 5rem);
  }
}

/* ─── Dark mode: win over “Premium Cohesive” (that block loads above without color-scheme guard) ─── */
@media (prefers-color-scheme: dark) {
  .chapter-label {
    color: rgba(186, 201, 220, 0.88);
  }

  .hero h1,
  .section h2 {
    color: #f8fafc !important;
  }

  .hero .lead,
  .section-intro,
  .feature-card p,
  .process-card p,
  .experience-card p,
  .testimonial-card p,
  .logic-card p,
  .logic-accordion__summary p,
  .logic-accordion__content p,
  .sudo-block p {
    color: var(--sn-text-secondary) !important;
  }

  .testimonial-card span {
    color: rgba(148, 163, 184, 0.88);
  }

  .process-card h3,
  .feature-card h3,
  .experience-card h3,
  .logic-card h3,
  .logic-accordion__summary h3,
  .testimonial-card h3,
  .sudo-block h3 {
    color: #f8fafc !important;
  }

  .btn-secondary {
    background: rgba(255, 255, 255, 0.07) !important;
    color: #f1f5f9 !important;
    border-color: rgba(148, 163, 184, 0.38) !important;
    box-shadow:
      0 1px 0 rgba(255, 255, 255, 0.08) inset,
      0 10px 28px rgba(0, 0, 0, 0.32) !important;
  }

  @media (hover: hover) and (pointer: fine) {
    .btn-secondary:hover {
      border-color: rgba(96, 165, 250, 0.5) !important;
      color: #ffffff !important;
      box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.12) inset,
        0 14px 36px rgba(37, 99, 235, 0.2) !important;
    }
  }

  .trust-strip__item,
  .process-section,
  .section-premium,
  .section-testimonials,
  .feature-card,
  .process-card,
  .experience-card,
  .testimonial-card,
  .logic-card,
  .logic-accordion,
  .sudo-block,
  .cta-panel,
  .legal-shell,
  .contact-card {
    border-color: var(--sn-border-default) !important;
    background: linear-gradient(
      168deg,
      var(--sn-surface) 0%,
      var(--sn-surface-raised) 100%
    ) !important;
    box-shadow:
      0 18px 46px rgba(0, 0, 0, 0.4),
      0 1px 0 rgba(255, 255, 255, 0.08) inset !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  .process-section,
  .section-premium,
  .section-testimonials,
  .cta-panel,
  .legal-shell {
    box-shadow:
      0 22px 56px rgba(0, 0, 0, 0.45),
      0 1px 0 rgba(255, 255, 255, 0.06) inset !important;
  }

  .site-footer {
    background: var(--sn-footer-bg) !important;
    border-top-color: var(--sn-border-default) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
}

/* =========================================================
   High contrast mode — toggle: html.high-contrast
   Enable: localStorage.setItem('sudoHighContrast','1') + reload
   URL: ?high_contrast=1
   Also honors prefers-contrast: more
   ========================================================= */
@media (prefers-contrast: more) {
  :root {
    --sn-accent: #0039b8;
    --sn-accent-rgb: 0, 57, 184;
    --sn-text-primary: #000000;
    --sn-text-secondary: #1a2333;
    --sn-surface: #ffffff;
    --sn-surface-raised: #f5f7fb;
    --sn-bg-base: #ffffff;
    --sn-bg-mid: #eef2f8;
    --sn-border-default: rgba(0, 0, 0, 0.22);
    --sn-mesh-primary: color-mix(in srgb, var(--sn-accent) 12%, transparent);
    --sn-mesh-secondary: color-mix(in srgb, var(--sn-accent) 8%, transparent);
    --sn-mesh-tertiary: color-mix(in srgb, var(--sn-accent) 8%, transparent);
    --sn-mesh-warm: transparent;
    --shell-from: #ffffff;
    --shell-to: #eef2f8;
  }
}

html.high-contrast {
  color-scheme: light;
}

html.high-contrast :root {
  --sn-accent: #0039b8;
  --sn-accent-rgb: 0, 57, 184;
  --sn-text-primary: #000000;
  --sn-text-secondary: #1a2333;
  --sn-surface: #ffffff;
  --sn-surface-raised: #f3f6fb;
  --sn-bg-base: #ffffff;
  --sn-bg-mid: #e8edf6;
  --sn-card-bg: #ffffff;
  --sn-header-bg: #ffffff;
  --sn-footer-bg: #f3f6fb;
  --sn-border-default: rgba(0, 0, 0, 0.24);
  --sn-glow-accent: rgba(0, 57, 184, 0.35);
  --sn-mesh-primary: color-mix(in srgb, var(--sn-accent) 10%, transparent);
  --sn-mesh-secondary: color-mix(in srgb, var(--sn-accent) 6%, transparent);
  --sn-mesh-tertiary: transparent;
  --sn-mesh-warm: transparent;
  --shell-from: #ffffff;
  --shell-to: #e8edf6;
  --text: var(--sn-text-primary);
  --text-muted: var(--sn-text-secondary);
  --ink-strong: var(--sn-text-primary);
  --ink-muted: var(--sn-text-secondary);
}

html.high-contrast body {
  background: var(--sn-bg-base);
}

html.high-contrast .page-aurora,
html.high-contrast .hero-v3__atmosphere,
html.high-contrast .hero-v3__cloud {
  opacity: 0 !important;
  visibility: hidden !important;
}

html.high-contrast .site-header,
html.high-contrast .site-footer,
html.high-contrast body.landing-v2 .site-footer,
html.high-contrast .feature-card,
html.high-contrast .sudo-block,
html.high-contrast .hero-live-app,
html.high-contrast .hero-v3__card,
html.high-contrast .hero-live-float,
html.high-contrast .logic-card,
html.high-contrast .contact-card {
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

html.high-contrast .hero-live-app {
  background: var(--sn-surface-raised) !important;
  --live-ink: var(--sn-text-primary);
  --live-muted: var(--sn-text-secondary);
  --live-chip-bg: var(--sn-surface);
  --live-panel-bg: var(--sn-surface);
  --live-card-bg: var(--sn-surface);
}

html.high-contrast .feature-card,
html.high-contrast .features .feature-card {
  border-width: 2px;
  border-color: var(--sn-border-default);
}

html.high-contrast .feature-card .tag {
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

html.high-contrast a:not(.btn) {
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

@media (prefers-color-scheme: dark) {
  html.high-contrast {
    color-scheme: dark;
  }

  html.high-contrast :root {
    --sn-accent: #7cc0ff;
    --sn-accent-rgb: 124, 192, 255;
    --sn-text-primary: #ffffff;
    --sn-text-secondary: #e2e8f0;
    --sn-surface: #0a101c;
    --sn-surface-raised: #141c2c;
    --sn-bg-base: #000000;
    --sn-bg-mid: #0a101c;
    --sn-card-bg: #141c2c;
    --sn-header-bg: #0a101c;
    --sn-footer-bg: #141c2c;
    --sn-border-default: rgba(255, 255, 255, 0.28);
    --shell-from: #000000;
    --shell-to: #0a101c;
  }
}