@layer reset, base, components, utilities;

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

  html {
    scroll-behavior: smooth;
    text-size-adjust: 100%;
  }

  body,
  h1,
  h2,
  h3,
  h4,
  p,
  figure,
  blockquote,
  dl,
  dd {
    margin: 0;
  }

  ul,
  ol {
    margin: 0;
    padding: 0;
  }

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

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

@layer base {
  :root {
    color-scheme: dark light;
    --page: #071018;
    --page-deep: #03080d;
    --surface: rgba(20, 33, 45, 0.74);
    --surface-solid: #13212d;
    --surface-soft: rgba(255, 255, 255, 0.055);
    --surface-hover: rgba(255, 255, 255, 0.09);
    --text: #f6f9fc;
    --text-soft: #c6d2dc;
    --muted: #91a3b3;
    --primary: #8ecaff;
    --primary-strong: #62b5ff;
    --secondary: #cbb6ff;
    --tertiary: #81e6c1;
    --warning: #ffcf70;
    --danger: #ff9d9d;
    --outline: rgba(207, 229, 246, 0.15);
    --outline-strong: rgba(142, 202, 255, 0.4);
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
    --shadow-soft: 0 12px 36px rgba(0, 0, 0, 0.22);
    --radius-sm: 0.8rem;
    --radius-md: 1.25rem;
    --radius-lg: 2rem;
    --radius-xl: 2.75rem;
    --content: 72rem;
    --reading: 48rem;
    --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  }

  @media (prefers-color-scheme: light) {
    :root {
      --page: #f4f8fb;
      --page-deep: #e8f1f7;
      --surface: rgba(255, 255, 255, 0.76);
      --surface-solid: #ffffff;
      --surface-soft: rgba(13, 36, 54, 0.055);
      --surface-hover: rgba(13, 36, 54, 0.09);
      --text: #102330;
      --text-soft: #304958;
      --muted: #5c7483;
      --primary: #00639a;
      --primary-strong: #0076b8;
      --secondary: #654ea3;
      --tertiary: #006b54;
      --warning: #805500;
      --danger: #a33a3a;
      --outline: rgba(20, 54, 77, 0.14);
      --outline-strong: rgba(0, 99, 154, 0.35);
      --shadow: 0 24px 70px rgba(27, 61, 82, 0.15);
      --shadow-soft: 0 12px 36px rgba(27, 61, 82, 0.1);
    }
  }

  body {
    min-width: 20rem;
    min-height: 100vh;
    overflow-x: hidden;
    background:
      radial-gradient(circle at 12% 6%, rgba(98, 181, 255, 0.18), transparent 28rem),
      radial-gradient(circle at 88% 18%, rgba(203, 182, 255, 0.13), transparent 26rem),
      radial-gradient(circle at 48% 80%, rgba(129, 230, 193, 0.08), transparent 32rem),
      linear-gradient(160deg, var(--page), var(--page-deep));
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }

  body::before {
    position: fixed;
    z-index: -1;
    inset: 0;
    background-image: radial-gradient(circle, var(--outline) 1px, transparent 1px);
    background-size: 28px 28px;
    mask-image: linear-gradient(to bottom, black, transparent 70%);
    content: "";
    pointer-events: none;
  }

  main {
    display: block;
  }

  a {
    color: var(--primary);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.2em;
  }

  a:hover {
    color: var(--primary-strong);
  }

  :focus-visible {
    outline: 3px solid var(--primary-strong);
    outline-offset: 4px;
  }

  ::selection {
    background: var(--primary-strong);
    color: #041019;
  }

  h1,
  h2,
  h3,
  h4 {
    color: var(--text);
    font-weight: 750;
    letter-spacing: -0.035em;
    line-height: 1.08;
    text-wrap: balance;
  }

  h1 {
    font-size: clamp(3.1rem, 9vw, 7.15rem);
  }

  h2 {
    font-size: clamp(2.1rem, 5vw, 4rem);
  }

  h3 {
    font-size: clamp(1.25rem, 2.4vw, 1.65rem);
  }

  p {
    text-wrap: pretty;
  }

  code {
    border: 1px solid var(--outline);
    border-radius: 0.45rem;
    background: var(--surface-soft);
    padding: 0.1em 0.38em;
    color: var(--text-soft);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: 0.9em;
  }

  hr {
    border: 0;
    border-top: 1px solid var(--outline);
    margin: 2rem 0;
  }
}

@layer components {
  .skip-link {
    position: fixed;
    z-index: 100;
    top: 0.75rem;
    left: 0.75rem;
    transform: translateY(-180%);
    border-radius: 999px;
    background: var(--text);
    padding: 0.75rem 1rem;
    color: var(--page-deep);
    font-weight: 750;
    transition: transform 160ms ease;
  }

  .skip-link:focus {
    transform: translateY(0);
  }

  .site-banner {
    border-bottom: 1px solid var(--outline);
    background: linear-gradient(90deg, rgba(98, 181, 255, 0.14), rgba(203, 182, 255, 0.13), rgba(129, 230, 193, 0.1));
    color: var(--text-soft);
    font-size: 0.88rem;
    font-weight: 650;
    letter-spacing: 0.01em;
    text-align: center;
  }

  .site-banner p {
    width: min(100% - 2rem, var(--content));
    margin-inline: auto;
    padding-block: 0.58rem;
  }

  .site-banner strong {
    color: var(--text);
  }

  .site-header {
    position: sticky;
    z-index: 50;
    top: 0;
    border-bottom: 1px solid transparent;
    background: color-mix(in srgb, var(--page) 76%, transparent);
    backdrop-filter: blur(22px) saturate(150%);
  }

  .nav-wrap {
    display: flex;
    width: min(100% - 2rem, var(--content));
    min-height: 4.75rem;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-inline: auto;
  }

  .brand {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.68rem;
    color: var(--text);
    font-size: 1.02rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    text-decoration: none;
  }

  .brand img {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.7rem;
    box-shadow: 0 7px 20px rgba(30, 121, 190, 0.25);
  }

  .nav-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: clamp(0.7rem, 2vw, 1.5rem);
    list-style: none;
  }

  .nav-links a {
    color: var(--text-soft);
    font-size: 0.9rem;
    font-weight: 680;
    text-decoration: none;
  }

  .nav-links a:hover,
  .nav-links a[aria-current="page"] {
    color: var(--text);
  }

  .nav-links .nav-cta {
    border: 1px solid var(--outline-strong);
    border-radius: 999px;
    background: var(--surface-soft);
    padding: 0.55rem 0.9rem;
    color: var(--text);
  }

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

  .reading-width {
    width: min(100%, var(--reading));
  }

  .hero {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(18rem, 0.72fr);
    align-items: center;
    gap: clamp(2.5rem, 7vw, 7rem);
    min-height: min(52rem, calc(100svh - 7rem));
    padding-block: clamp(4rem, 9vw, 8rem);
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    margin-bottom: 1.1rem;
    color: var(--tertiary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.13em;
    text-transform: uppercase;
  }

  .eyebrow::before {
    width: 0.52rem;
    height: 0.52rem;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 0 0.35rem color-mix(in srgb, currentColor 14%, transparent);
    content: "";
  }

  .hero-title span,
  .gradient-text {
    background: linear-gradient(125deg, var(--primary) 0%, var(--secondary) 52%, var(--tertiary) 100%);
    background-clip: text;
    color: transparent;
  }

  .hero-copy {
    max-width: 43rem;
    margin-top: 1.55rem;
    color: var(--text-soft);
    font-size: clamp(1.1rem, 2.1vw, 1.38rem);
    line-height: 1.55;
  }

  .button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 2rem;
  }

  .button {
    display: inline-flex;
    min-height: 3.25rem;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.78rem 1.25rem;
    font-weight: 780;
    line-height: 1.15;
    text-align: center;
    text-decoration: none;
    transition: transform 180ms var(--ease), background 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
  }

  .button:hover {
    transform: translateY(-2px);
  }

  .button-primary {
    background: linear-gradient(135deg, var(--primary-strong), var(--secondary));
    box-shadow: 0 12px 34px rgba(76, 139, 196, 0.28);
    color: #061018;
  }

  .button-primary:hover {
    box-shadow: 0 17px 42px rgba(76, 139, 196, 0.38);
    color: #061018;
  }

  .button-secondary {
    border-color: var(--outline);
    background: var(--surface-soft);
    color: var(--text);
    backdrop-filter: blur(16px);
  }

  .button-secondary:hover {
    border-color: var(--outline-strong);
    background: var(--surface-hover);
    color: var(--text);
  }

  .button svg,
  .inline-icon {
    width: 1.2rem;
    height: 1.2rem;
    flex: 0 0 auto;
  }

  .trust-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.58rem;
    margin-top: 1.8rem;
    list-style: none;
  }

  .trust-list li,
  .chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid var(--outline);
    border-radius: 999px;
    background: var(--surface-soft);
    padding: 0.48rem 0.72rem;
    color: var(--text-soft);
    font-size: 0.78rem;
    font-weight: 700;
  }

  .trust-list li::before {
    color: var(--tertiary);
    content: "✓";
    font-weight: 900;
  }

  .hero-note {
    margin-top: 0.9rem;
    color: var(--muted);
    font-size: 0.82rem;
  }

  .device-stage {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 39rem;
    isolation: isolate;
  }

  .device-stage::before,
  .device-stage::after {
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    content: "";
    filter: blur(3px);
  }

  .device-stage::before {
    width: 25rem;
    height: 25rem;
    background: radial-gradient(circle, rgba(98, 181, 255, 0.25), transparent 68%);
  }

  .device-stage::after {
    right: 2%;
    bottom: 5%;
    width: 14rem;
    height: 14rem;
    background: radial-gradient(circle, rgba(129, 230, 193, 0.18), transparent 68%);
  }

  .device {
    position: relative;
    width: min(100%, 20.5rem);
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 3.1rem;
    background: #02070b;
    padding: 0.55rem;
    box-shadow: 0 45px 110px rgba(0, 0, 0, 0.48), inset 0 0 0 2px rgba(255, 255, 255, 0.04);
    transform: rotate(2.5deg);
  }

  .device::before {
    position: absolute;
    z-index: 2;
    top: 1rem;
    left: 50%;
    width: 5rem;
    height: 1.45rem;
    transform: translateX(-50%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    background: #050a0e;
    content: "";
  }

  .device-screen {
    position: relative;
    aspect-ratio: 9 / 19.5;
    overflow: hidden;
    border-radius: 2.65rem;
    background:
      linear-gradient(to bottom, transparent 45%, rgba(2, 7, 11, 0.8)),
      radial-gradient(circle at 70% 22%, rgba(255, 215, 151, 0.72), transparent 19%),
      linear-gradient(150deg, #476e8d 0%, #754e83 40%, #1a464f 73%, #091117 100%);
  }

  .device-screen::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 25%, rgba(255, 255, 255, 0.11) 45%, transparent 58%);
    content: "";
    transform: translateX(-90%);
    animation: screen-sheen 8s var(--ease) infinite;
  }

  .phone-topbar,
  .phone-content,
  .phone-controls,
  .phone-meta {
    position: absolute;
    z-index: 1;
    right: 1.05rem;
    left: 1.05rem;
  }

  .phone-topbar {
    top: 3.15rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: white;
    font-size: 0.68rem;
    font-weight: 760;
  }

  .phone-pill {
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    background: rgba(5, 10, 14, 0.34);
    padding: 0.34rem 0.55rem;
    backdrop-filter: blur(14px);
  }

  .phone-content {
    top: 47%;
    transform: translateY(-50%);
    text-align: center;
  }

  .phone-play {
    display: grid;
    width: 4rem;
    height: 4rem;
    place-items: center;
    margin-inline: auto;
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 50%;
    background: rgba(4, 14, 20, 0.27);
    color: white;
    font-size: 1.25rem;
    backdrop-filter: blur(16px);
  }

  .phone-content strong {
    display: block;
    margin-top: 0.8rem;
    color: white;
    font-size: 0.82rem;
  }

  .phone-content span {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.65rem;
  }

  .phone-meta {
    bottom: 6.9rem;
    color: white;
  }

  .phone-meta strong {
    display: block;
    font-size: 0.78rem;
  }

  .phone-meta span {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.64rem;
  }

  .phone-controls {
    bottom: 2.2rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.48rem;
  }

  .phone-controls span {
    display: grid;
    aspect-ratio: 1;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.19);
    border-radius: 50%;
    background: rgba(4, 14, 20, 0.34);
    color: white;
    font-size: 0.65rem;
    font-weight: 800;
    backdrop-filter: blur(14px);
  }

  .float-card {
    position: absolute;
    z-index: 4;
    max-width: 12.5rem;
    border: 1px solid var(--outline-strong);
    border-radius: 1.15rem;
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    padding: 0.85rem 1rem;
    color: var(--text-soft);
    font-size: 0.72rem;
    font-weight: 680;
    backdrop-filter: blur(20px) saturate(140%);
  }

  .float-card strong {
    display: block;
    margin-bottom: 0.15rem;
    color: var(--text);
    font-size: 0.82rem;
  }

  .float-card-one {
    top: 15%;
    left: -8%;
    transform: rotate(-3deg);
  }

  .float-card-two {
    right: -10%;
    bottom: 14%;
    transform: rotate(3deg);
  }

  .visual-caption {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    color: var(--muted);
    font-size: 0.7rem;
    text-align: center;
  }

  .section {
    padding-block: clamp(4.5rem, 10vw, 8rem);
    scroll-margin-top: 5.5rem;
  }

  .section-compact {
    padding-block: clamp(3rem, 7vw, 5rem);
  }

  .section-header {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(18rem, 0.68fr);
    align-items: end;
    gap: 2rem;
    margin-bottom: 2.5rem;
  }

  .section-header p {
    color: var(--text-soft);
    font-size: 1.05rem;
  }

  .kicker {
    margin-bottom: 0.7rem;
    color: var(--primary);
    font-size: 0.76rem;
    font-weight: 820;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  .feature-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1rem;
  }

  .card {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--outline);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    padding: clamp(1.35rem, 3vw, 2.1rem);
    backdrop-filter: blur(18px) saturate(135%);
  }

  .card::before {
    position: absolute;
    top: -8rem;
    right: -8rem;
    width: 16rem;
    height: 16rem;
    border-radius: 50%;
    background: radial-gradient(circle, color-mix(in srgb, var(--card-accent, var(--primary)) 16%, transparent), transparent 68%);
    content: "";
    pointer-events: none;
  }

  .feature-card {
    grid-column: span 4;
    min-height: 17rem;
  }

  .feature-card.wide {
    grid-column: span 8;
  }

  .feature-card.half {
    grid-column: span 6;
  }

  .feature-card .number {
    display: grid;
    width: 2.65rem;
    height: 2.65rem;
    place-items: center;
    margin-bottom: 2.7rem;
    border: 1px solid color-mix(in srgb, var(--card-accent, var(--primary)) 38%, transparent);
    border-radius: 0.9rem;
    background: color-mix(in srgb, var(--card-accent, var(--primary)) 12%, transparent);
    color: var(--card-accent, var(--primary));
    font-size: 0.72rem;
    font-weight: 850;
    letter-spacing: 0.08em;
  }

  .feature-card h3 {
    margin-bottom: 0.75rem;
  }

  .feature-card p {
    color: var(--text-soft);
  }

  .feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 1.2rem;
    list-style: none;
  }

  .feature-list li {
    border: 1px solid var(--outline);
    border-radius: 999px;
    background: var(--surface-soft);
    padding: 0.35rem 0.6rem;
    color: var(--text-soft);
    font-size: 0.72rem;
    font-weight: 680;
  }

  .split-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: hidden;
    border: 1px solid var(--outline);
    border-radius: var(--radius-xl);
    background: var(--surface);
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
  }

  .split-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(2rem, 6vw, 5rem);
  }

  .split-copy p {
    margin-top: 1rem;
    color: var(--text-soft);
    font-size: 1.08rem;
  }

  .split-visual {
    display: grid;
    min-height: 34rem;
    place-items: center;
    background:
      radial-gradient(circle at 30% 28%, rgba(142, 202, 255, 0.28), transparent 24%),
      radial-gradient(circle at 72% 68%, rgba(129, 230, 193, 0.22), transparent 25%),
      linear-gradient(145deg, rgba(76, 92, 142, 0.42), rgba(8, 33, 41, 0.92));
  }

  .mode-stack {
    display: grid;
    width: min(80%, 21rem);
    gap: 0.8rem;
  }

  .mode-item {
    display: grid;
    grid-template-columns: 2.8rem 1fr auto;
    align-items: center;
    gap: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 1.1rem;
    background: rgba(5, 15, 21, 0.45);
    padding: 0.8rem;
    color: rgba(255, 255, 255, 0.76);
    backdrop-filter: blur(16px);
  }

  .mode-item strong {
    color: white;
    font-size: 0.84rem;
  }

  .mode-item small {
    display: block;
    color: rgba(255, 255, 255, 0.62);
  }

  .mode-icon {
    display: grid;
    aspect-ratio: 1;
    place-items: center;
    border-radius: 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 0.7rem;
    font-weight: 850;
  }

  .mode-state {
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
    background: #81e6c1;
    box-shadow: 0 0 0 0.3rem rgba(129, 230, 193, 0.12);
  }

  .proof-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }

  .proof-card {
    min-height: 15rem;
  }

  .proof-card strong {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--text);
    font-size: 1.15rem;
  }

  .proof-card p {
    color: var(--text-soft);
  }

  .proof-card .status {
    display: inline-flex;
    margin-bottom: 2.8rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--tertiary) 12%, transparent);
    padding: 0.35rem 0.6rem;
    color: var(--tertiary);
    font-size: 0.69rem;
    font-weight: 820;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .table-shell {
    overflow: hidden;
    border: 1px solid var(--outline);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
  }

  .data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
  }

  .data-table th,
  .data-table td {
    border-bottom: 1px solid var(--outline);
    padding: 1rem 1.15rem;
    text-align: left;
    vertical-align: top;
  }

  .data-table th {
    background: var(--surface-soft);
    color: var(--text);
    font-size: 0.72rem;
    font-weight: 820;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .data-table td {
    color: var(--text-soft);
  }

  .data-table td:first-child {
    color: var(--text);
    font-weight: 750;
  }

  .data-table tr:last-child td {
    border-bottom: 0;
  }

  .table-note {
    margin-top: 1rem;
    color: var(--muted);
    font-size: 0.84rem;
  }

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

  .boundary-card h3,
  .plan-card h3 {
    margin-bottom: 0.8rem;
  }

  .boundary-card > p,
  .plan-card > p {
    color: var(--text-soft);
  }

  .check-list,
  .plain-list {
    display: grid;
    gap: 0.72rem;
    margin-top: 1.4rem;
    list-style: none;
  }

  .check-list li {
    position: relative;
    padding-left: 1.6rem;
    color: var(--text-soft);
  }

  .check-list li::before {
    position: absolute;
    top: 0;
    left: 0;
    color: var(--tertiary);
    content: "✓";
    font-weight: 900;
  }

  .plain-list li {
    border-top: 1px solid var(--outline);
    padding-top: 0.72rem;
    color: var(--text-soft);
  }

  .plain-list strong {
    color: var(--text);
  }

  .callout {
    border: 1px solid color-mix(in srgb, var(--warning) 28%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--warning) 8%, transparent);
    padding: 1rem 1.1rem;
    color: var(--text-soft);
  }

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

  .callout-info {
    border-color: color-mix(in srgb, var(--primary) 30%, transparent);
    background: color-mix(in srgb, var(--primary) 8%, transparent);
  }

  .callout-success {
    border-color: color-mix(in srgb, var(--tertiary) 30%, transparent);
    background: color-mix(in srgb, var(--tertiary) 8%, transparent);
  }

  .faq-list {
    display: grid;
    gap: 0.72rem;
    max-width: 55rem;
    margin-inline: auto;
  }

  .faq-list details {
    border: 1px solid var(--outline);
    border-radius: var(--radius-md);
    background: var(--surface);
    padding: 0 1.2rem;
    backdrop-filter: blur(16px);
  }

  .faq-list summary {
    position: relative;
    padding: 1.15rem 2.25rem 1.15rem 0;
    color: var(--text);
    cursor: pointer;
    font-weight: 760;
    list-style: none;
  }

  .faq-list summary::-webkit-details-marker {
    display: none;
  }

  .faq-list summary::after {
    position: absolute;
    top: 50%;
    right: 0.2rem;
    width: 1.45rem;
    height: 1.45rem;
    transform: translateY(-50%);
    border: 1px solid var(--outline);
    border-radius: 50%;
    color: var(--muted);
    content: "+";
    font-size: 1.1rem;
    line-height: 1.25rem;
    text-align: center;
  }

  .faq-list details[open] summary::after {
    content: "−";
  }

  .faq-list details p,
  .faq-list details ul {
    max-width: 48rem;
    padding: 0 0 1.2rem;
    color: var(--text-soft);
  }

  .faq-list details ul {
    padding-left: 1.25rem;
  }

  .cta-panel {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--outline-strong);
    border-radius: var(--radius-xl);
    background:
      radial-gradient(circle at 14% 20%, rgba(142, 202, 255, 0.22), transparent 18rem),
      radial-gradient(circle at 86% 70%, rgba(129, 230, 193, 0.16), transparent 17rem),
      var(--surface);
    box-shadow: var(--shadow);
    padding: clamp(2.2rem, 7vw, 5.3rem);
    text-align: center;
    backdrop-filter: blur(22px);
  }

  .cta-panel p {
    max-width: 40rem;
    margin: 1rem auto 0;
    color: var(--text-soft);
    font-size: 1.08rem;
  }

  .cta-panel .button-row {
    justify-content: center;
  }

  .site-footer {
    border-top: 1px solid var(--outline);
    margin-top: 3rem;
    padding-block: 3.5rem 2rem;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr;
    gap: 2rem;
  }

  .footer-brand p {
    max-width: 30rem;
    margin-top: 0.9rem;
    color: var(--muted);
    font-size: 0.9rem;
  }

  .footer-nav h2 {
    margin-bottom: 0.8rem;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .footer-nav ul {
    display: grid;
    gap: 0.5rem;
    list-style: none;
  }

  .footer-nav a {
    color: var(--text-soft);
    font-size: 0.9rem;
    text-decoration: none;
  }

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

  .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-top: 1px solid var(--outline);
    margin-top: 2.5rem;
    padding-top: 1.3rem;
    color: var(--muted);
    font-size: 0.78rem;
  }

  .page-hero {
    padding-block: clamp(4rem, 9vw, 7.5rem) clamp(3rem, 6vw, 5rem);
  }

  .page-hero h1 {
    max-width: 58rem;
    font-size: clamp(2.8rem, 7vw, 5.7rem);
  }

  .page-hero p {
    max-width: 47rem;
    margin-top: 1.25rem;
    color: var(--text-soft);
    font-size: 1.1rem;
  }

  .page-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-top: 1.25rem;
  }

  .legal-layout {
    display: grid;
    grid-template-columns: 15rem minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 6vw, 5rem);
    padding-bottom: 7rem;
  }

  .toc {
    position: sticky;
    top: 6rem;
    border: 1px solid var(--outline);
    border-radius: var(--radius-md);
    background: var(--surface);
    padding: 1rem;
    backdrop-filter: blur(16px);
  }

  .toc h2 {
    margin-bottom: 0.7rem;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .toc ol {
    display: grid;
    gap: 0.38rem;
    list-style-position: inside;
  }

  .toc a {
    color: var(--text-soft);
    font-size: 0.82rem;
    text-decoration: none;
  }

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

  .prose {
    min-width: 0;
  }

  .prose > section {
    padding-block: 2.2rem;
    scroll-margin-top: 6rem;
  }

  .prose > section:first-child {
    padding-top: 0;
  }

  .prose > section + section {
    border-top: 1px solid var(--outline);
  }

  .prose h2 {
    margin-bottom: 1rem;
    font-size: clamp(1.7rem, 4vw, 2.45rem);
  }

  .prose h3 {
    margin: 1.8rem 0 0.65rem;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
  }

  .prose p,
  .prose li,
  .prose dd {
    color: var(--text-soft);
  }

  .prose p + p,
  .prose p + ul,
  .prose p + ol,
  .prose ul + p,
  .prose ol + p,
  .prose .callout + p,
  .prose .table-shell + p {
    margin-top: 1rem;
  }

  .prose ul,
  .prose ol {
    display: grid;
    gap: 0.55rem;
    margin-top: 0.8rem;
    padding-left: 1.4rem;
  }

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

  .prose .callout {
    margin-block: 1rem;
  }

  .prose dl {
    display: grid;
    gap: 1rem;
    margin-top: 1rem;
  }

  .prose dt {
    color: var(--text);
    font-weight: 760;
  }

  .prose dd {
    margin-top: 0.15rem;
  }

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

  .contact-card {
    display: flex;
    flex-direction: column;
    min-height: 15rem;
  }

  .contact-card p {
    margin-top: 0.7rem;
    color: var(--text-soft);
  }

  .contact-card .button {
    align-self: flex-start;
    margin-top: auto;
  }

  .support-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }

  .support-card {
    min-height: 13.5rem;
  }

  .support-card .number {
    display: block;
    margin-bottom: 2rem;
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 820;
    letter-spacing: 0.12em;
  }

  .support-card p {
    margin-top: 0.65rem;
    color: var(--text-soft);
  }

  .support-card a {
    display: inline-block;
    margin-top: 1rem;
    font-weight: 740;
  }

  .error-page {
    display: grid;
    min-height: calc(100svh - 5rem);
    place-items: center;
    padding-block: 4rem;
    text-align: center;
  }

  .error-code {
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 850;
    letter-spacing: 0.15em;
  }

  .error-page h1 {
    max-width: 50rem;
    margin-top: 0.8rem;
    font-size: clamp(3rem, 9vw, 6rem);
  }

  .error-page p {
    max-width: 38rem;
    margin: 1rem auto 0;
    color: var(--text-soft);
    font-size: 1.08rem;
  }

  @keyframes screen-sheen {
    0%,
    60% {
      transform: translateX(-100%);
    }
    80%,
    100% {
      transform: translateX(110%);
    }
  }
}

@layer utilities {
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    clip-path: inset(50%);
    white-space: nowrap;
  }

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

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

  .accent-blue {
    --card-accent: var(--primary);
  }

  .accent-violet {
    --card-accent: var(--secondary);
  }

  .accent-green {
    --card-accent: var(--tertiary);
  }

  .accent-gold {
    --card-accent: var(--warning);
  }

  .center {
    text-align: center;
  }

  .center .kicker,
  .center p {
    margin-inline: auto;
  }

  .max-copy {
    max-width: 43rem;
  }

  @media (max-width: 62rem) {
    .hero {
      grid-template-columns: 1fr;
      min-height: auto;
      padding-top: 5rem;
    }

    .hero-copy {
      max-width: 50rem;
    }

    .device-stage {
      width: min(100%, 37rem);
      margin-inline: auto;
    }

    .section-header {
      grid-template-columns: 1fr;
      max-width: 48rem;
    }

    .feature-card,
    .feature-card.wide {
      grid-column: span 6;
    }

    .proof-grid,
    .support-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
      grid-column: 1 / -1;
    }
  }

  @media (max-width: 46rem) {
    .site-header {
      position: relative;
    }

    .nav-wrap {
      min-height: 4.25rem;
    }

    .nav-links li:not(:last-child) {
      display: none;
    }

    .hero {
      padding-block: 3.6rem 4.5rem;
    }

    .hero-title {
      font-size: clamp(3rem, 15vw, 4.8rem);
    }

    .button-row,
    .button {
      width: 100%;
    }

    .device-stage {
      min-height: 34rem;
    }

    .device {
      width: 17.5rem;
    }

    .float-card {
      max-width: 10.5rem;
      font-size: 0.64rem;
    }

    .float-card-one {
      left: 0;
    }

    .float-card-two {
      right: 0;
    }

    .section {
      padding-block: 4.5rem;
    }

    .feature-card,
    .feature-card.wide,
    .feature-card.half {
      grid-column: 1 / -1;
      min-height: auto;
    }

    .feature-card .number {
      margin-bottom: 2rem;
    }

    .split-panel,
    .boundary-grid,
    .plan-grid,
    .contact-card-grid {
      grid-template-columns: 1fr;
    }

    .split-visual {
      min-height: 27rem;
      grid-row: 1;
    }

    .proof-grid,
    .support-grid,
    .footer-grid {
      grid-template-columns: 1fr;
    }

    .footer-brand {
      grid-column: auto;
    }

    .footer-bottom {
      align-items: flex-start;
      flex-direction: column;
    }

    .legal-layout {
      grid-template-columns: 1fr;
    }

    .toc {
      position: relative;
      top: auto;
    }

    .data-table,
    .data-table tbody,
    .data-table tr,
    .data-table td {
      display: block;
      width: 100%;
    }

    .data-table thead {
      position: absolute;
      width: 1px;
      height: 1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
    }

    .data-table tr {
      border-bottom: 1px solid var(--outline);
      padding: 0.55rem 0;
    }

    .data-table tr:last-child {
      border-bottom: 0;
    }

    .data-table td {
      display: grid;
      grid-template-columns: minmax(7rem, 0.42fr) 1fr;
      gap: 0.7rem;
      border: 0;
      padding: 0.55rem 1rem;
    }

    .data-table td::before {
      color: var(--muted);
      content: attr(data-label);
      font-size: 0.7rem;
      font-weight: 820;
      letter-spacing: 0.07em;
      text-transform: uppercase;
    }
  }

  @media (max-width: 24rem) {
    .float-card {
      display: none;
    }

    .device-stage {
      min-height: 32rem;
    }

    .data-table td {
      grid-template-columns: 1fr;
      gap: 0.2rem;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      scroll-behavior: auto !important;
      transition-duration: 0.01ms !important;
    }
  }

  @media (forced-colors: active) {
    .card,
    .split-panel,
    .cta-panel,
    .faq-list details,
    .toc,
    .button,
    .chip,
    .trust-list li {
      border: 1px solid CanvasText;
    }

    .hero-title span,
    .gradient-text {
      background: none;
      color: LinkText;
    }
  }

  @media print {
    .site-banner,
    .site-header,
    .site-footer,
    .button-row,
    .toc {
      display: none !important;
    }

    body {
      background: white;
      color: black;
      font-size: 11pt;
    }

    body::before {
      display: none;
    }

    .container {
      width: 100%;
    }

    .legal-layout {
      display: block;
    }

    .prose p,
    .prose li,
    .prose dd,
    .page-hero p {
      color: #222;
    }

    a {
      color: black;
      text-decoration: underline;
    }
  }
}

/* Post-review accessibility and responsive refinements. Kept unlayered so these
   targeted rules take precedence over the component layers above. */
:root {
  --on-primary: #061018;
}

@media (prefers-color-scheme: light) {
  :root {
    --muted: #496170;
    --on-primary: #ffffff;
  }
}

::selection {
  background: var(--primary-strong);
  color: var(--on-primary);
}

.button-primary,
.button-primary:hover {
  color: var(--on-primary);
}

.nav-links a[aria-current="page"],
.footer-nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.32em;
}

.proof-card h2,
.proof-card h3 {
  margin-bottom: 0.75rem;
  color: var(--text);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.data-table tbody th[scope="row"] {
  background: transparent;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 750;
  letter-spacing: normal;
  text-transform: none;
}

ol.check-list,
ol.plain-list {
  list-style: decimal;
  padding-left: 1.55rem;
}

ol.check-list li {
  padding-left: 0.18rem;
}

ol.check-list li::before {
  content: none;
}

ol.plain-list {
  margin-left: 0.25rem;
}

.toc {
  max-height: calc(100svh - 7rem);
  overflow: auto;
  scrollbar-width: thin;
}

@media (max-height: 42rem) {
  .toc {
    position: relative;
    top: auto;
    max-height: none;
  }
}

@media (max-width: 46rem) {
  .site-header {
    position: sticky;
  }

  .nav-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.35rem;
    padding-block: 0.65rem;
  }

  .nav-links {
    grid-column: 1;
    width: 100%;
    min-width: 0;
    justify-content: flex-start;
    gap: 0.45rem;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    padding-bottom: 0.2rem;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links li:not(:last-child) {
    display: list-item;
  }

  .nav-links a {
    display: block;
    border: 1px solid var(--outline);
    border-radius: 999px;
    padding: 0.45rem 0.72rem;
    white-space: nowrap;
  }

  .nav-links .nav-cta {
    padding: 0.45rem 0.72rem;
  }

  .device-stage {
    overflow: clip;
    overflow-clip-margin: 0.4rem;
  }

  .section,
  .prose > section {
    scroll-margin-top: 8.5rem;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td,
  .data-table th[scope="row"] {
    display: block;
    width: 100%;
  }

  .data-table td,
  .data-table th[scope="row"] {
    display: grid;
    grid-template-columns: minmax(7rem, 0.42fr) 1fr;
    gap: 0.7rem;
    border: 0;
    padding: 0.55rem 1rem;
    text-align: left;
  }

  .data-table td::before,
  .data-table th[scope="row"]::before {
    color: var(--muted);
    content: attr(data-label);
    font-size: 0.7rem;
    font-weight: 820;
    letter-spacing: 0.07em;
    text-transform: uppercase;
  }
}

@media (max-width: 24rem) {
  .data-table td,
  .data-table th[scope="row"] {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}