/* Signal Walk — shared public-site styles. Static CSS, no framework, no remote fonts. */

:root {
  color-scheme: light;
  --blue-950: #031738;
  --blue-900: #05245a;
  --blue-800: #063d93;
  --blue-700: #0a50b7;
  --blue-600: #1764d7;
  --blue-500: #2b76e8;
  --blue-200: #b8cdf5;
  --blue-100: #e5edfc;
  --blue-050: #f2f6ff;
  --ink: #0c1c38;
  --muted: #52617a;
  --muted-strong: #34445f;
  --paper: #f7f9fd;
  --surface: #ffffff;
  --surface-soft: #eef3fc;
  --line: #d5dff0;
  --line-strong: #b6c6e2;
  --success: #176c49;
  --warning-bg: #fff8df;
  --warning-line: #d99400;
  --shadow-sm: 0 4px 14px rgba(5, 36, 90, 0.08);
  --shadow-md: 0 18px 48px rgba(5, 36, 90, 0.14);
  --shadow-lg: 0 30px 80px rgba(5, 36, 90, 0.22);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 36px;
  --container: 1180px;
  --prose: 760px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--blue-700);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--blue-900);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #79a8ff;
  outline-offset: 3px;
}

p,
ul,
ol {
  margin-top: 0;
}

p:last-child,
ul:last-child,
ol:last-child {
  margin-bottom: 0;
}

h1,
h2,
h3 {
  color: var(--blue-950);
  font-weight: 760;
  letter-spacing: -0.025em;
  line-height: 1.14;
  text-wrap: balance;
}

h1 {
  margin: 0 0 1.1rem;
  font-size: clamp(2.7rem, 6vw, 5.2rem);
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 3.25rem);
}

h3 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.25rem, 2.4vw, 1.65rem);
}

code {
  padding: 0.08em 0.35em;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--blue-900);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.skip-link {
  position: fixed;
  top: 0.5rem;
  left: -9999px;
  z-index: 999;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--blue-950);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  left: 0.5rem;
}

.section-inner,
.header-inner,
.footer-inner {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

section {
  position: relative;
}

section[class^="sec-"],
.closing-cta {
  padding: clamp(4.25rem, 8vw, 7rem) 0;
}

.band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--blue-700);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.section-heading {
  max-width: 760px;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.section-heading.centered {
  margin-inline: auto;
  text-align: center;
}

.section-lead {
  margin-bottom: 0;
  color: var(--muted-strong);
  font-size: clamp(1.08rem, 1.8vw, 1.28rem);
  line-height: 1.68;
  text-wrap: pretty;
}

.prose {
  max-width: var(--prose);
}

.wide-prose {
  max-width: 850px;
}

.supporting {
  color: var(--muted);
  font-size: 0.95rem;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background:
    linear-gradient(rgba(3, 23, 56, 0.83), rgba(3, 23, 56, 0.83)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 28px),
    var(--blue-800);
  box-shadow: 0 10px 30px rgba(3, 23, 56, 0.16);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  min-height: 70px;
  align-items: center;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: #fff;
  text-decoration: none;
}

.brand:hover {
  color: #fff;
}

.brand .mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.16);
}

.site-name {
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  margin-left: auto;
  align-items: center;
  gap: 1.35rem;
}

.nav-links,
.footer-links {
  display: flex;
  margin: 0;
  padding: 0;
  align-items: center;
  gap: 1.15rem;
  list-style: none;
}

.nav-links li,
.footer-links li {
  margin: 0;
}

.site-nav a {
  color: #eaf2ff;
  font-size: 0.93rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 0.32rem;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 42px;
  margin-left: auto;
  padding: 9px 10px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}

.nav-toggle .bar {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  border-radius: 999px;
  background: #fff;
}

/* Buttons and badges */

.button,
.badge-soon {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.15rem;
  border-radius: 12px;
  font-weight: 750;
  line-height: 1.2;
}

.button {
  border: 1px solid var(--blue-700);
  background: var(--blue-700);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(10, 80, 183, 0.18);
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.button:hover {
  transform: translateY(-1px);
  background: var(--blue-900);
  color: #fff;
  box-shadow: 0 14px 30px rgba(10, 80, 183, 0.24);
}

.button.secondary {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.76);
  color: var(--blue-800);
  box-shadow: none;
}

.button.secondary:hover {
  border-color: var(--blue-600);
  background: #fff;
  color: var(--blue-900);
}

.badge-soon {
  border: 1px solid rgba(23, 100, 215, 0.28);
  background: var(--blue-100);
  color: var(--blue-800);
  font-size: 0.9rem;
}

.site-header .badge-soon {
  min-height: 38px;
  padding: 0.55rem 0.85rem;
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.11);
  color: #fff;
}

.cta-row {
  display: flex;
  margin-top: 1.7rem;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.centered-row {
  justify-content: center;
}

.reassurance {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Hero */

.hero {
  overflow: hidden;
  padding: clamp(4.5rem, 9vw, 7.5rem) 0 clamp(4rem, 8vw, 6.5rem);
  background:
    radial-gradient(circle at 12% 8%, rgba(184, 205, 245, 0.7), transparent 34%),
    linear-gradient(180deg, #f9fbff 0%, #eef4ff 100%);
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: 0.45;
  background:
    repeating-linear-gradient(0deg, transparent 0 35px, rgba(6, 61, 147, 0.055) 35px 36px),
    repeating-linear-gradient(90deg, transparent 0 35px, rgba(6, 61, 147, 0.055) 35px 36px);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 94%);
}

.hero-grid {
  display: grid;
  position: relative;
  z-index: 1;
  align-items: center;
  gap: clamp(3rem, 7vw, 6.5rem);
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.86fr);
}

.hero-copy-block {
  max-width: 670px;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 1.5rem;
  color: var(--muted-strong);
  font-size: clamp(1.16rem, 2vw, 1.38rem);
  line-height: 1.65;
}

.hero-list {
  display: grid;
  margin: 1.6rem 0 0;
  padding: 0;
  gap: 0.85rem;
  list-style: none;
}

.hero-list li {
  position: relative;
  margin: 0;
  padding-left: 1.8rem;
  color: var(--ink);
  font-weight: 620;
}

.hero-list li::before {
  position: absolute;
  top: 0.48em;
  left: 0;
  width: 0.72rem;
  height: 0.72rem;
  border: 2px solid var(--blue-600);
  border-radius: 50%;
  content: "";
  box-shadow: inset 0 0 0 2px #fff;
  background: var(--blue-500);
}

.hero-art {
  display: grid;
  min-height: 620px;
  place-items: center;
  position: relative;
}

.device-frame {
  width: min(100%, 270px);
  overflow: hidden;
  border: 8px solid #0c1730;
  border-radius: 34px;
  background: #0c1730;
  box-shadow: var(--shadow-lg);
}

.device-frame img {
  display: block;
  width: 100%;
  background: #0c1730;
}

.hero-art .device-frame {
  position: absolute;
  width: 250px;
}

.hero-art .primary {
  z-index: 3;
  transform: translateY(-5px);
}

.hero-art .secondary {
  z-index: 2;
  transform: translate(-46%, 28px) rotate(-5deg) scale(0.88);
  opacity: 0.94;
}

.hero-art .tertiary {
  z-index: 1;
  transform: translate(46%, 28px) rotate(5deg) scale(0.88);
  opacity: 0.94;
}

/* Trust strip */

.trust-strip {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--blue-950);
  color: #fff;
}

.trust-strip ul {
  display: grid;
  margin: 0;
  padding: 1.5rem 0;
  gap: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
}

.trust-strip li {
  display: grid;
  margin: 0;
  padding: 0.35rem 1.25rem;
  border-right: 1px solid rgba(255, 255, 255, 0.17);
  gap: 0.16rem;
}

.trust-strip li:first-child {
  padding-left: 0;
}

.trust-strip li:last-child {
  padding-right: 0;
  border-right: 0;
}

.trust-strip strong {
  color: #fff;
  font-size: 0.97rem;
}

.trust-strip span {
  color: #bed1f4;
  font-size: 0.84rem;
  line-height: 1.5;
}

/* Feature rows */

.feature-row {
  display: grid;
  margin-top: clamp(3.25rem, 7vw, 6.5rem);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 6rem);
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1fr);
}

.feature-row:first-of-type {
  margin-top: 0;
}

.feature-row.reverse {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.72fr);
}

.feature-row.reverse .feature-art {
  order: 2;
}

.feature-row.reverse .feature-copy {
  order: 1;
}

.feature-art {
  display: flex;
  justify-content: center;
}

.feature-art.large .device-frame {
  width: min(100%, 300px);
}

.feature-copy {
  max-width: 640px;
}

.feature-copy p {
  color: var(--muted-strong);
  font-size: 1.05rem;
}

.feature-copy h2,
.feature-copy h3 {
  max-width: 620px;
}

.thumb-button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  text-align: inherit;
  cursor: zoom-in;
}

.thumb-button .device-frame {
  display: block;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.thumb-button:hover .device-frame {
  transform: translateY(-4px);
  box-shadow: 0 35px 80px rgba(5, 36, 90, 0.25);
}

.check-list {
  display: grid;
  margin: 1.5rem 0 0;
  padding: 0;
  gap: 0.72rem;
  list-style: none;
}

.check-list li {
  position: relative;
  margin: 0;
  padding-left: 1.65rem;
}

.check-list li::before {
  position: absolute;
  top: 0.18rem;
  left: 0;
  content: "✓";
  color: var(--success);
  font-weight: 900;
}

.check-list.compact {
  max-width: 540px;
  gap: 0.58rem;
}

/* Steps */

.steps {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 1.25rem;
  counter-reset: step;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  list-style: none;
}

.steps li {
  min-height: 250px;
  margin: 0;
  padding: 1.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: inline-grid;
  width: 46px;
  height: 46px;
  margin-bottom: 1.4rem;
  border: 1px solid var(--blue-200);
  border-radius: 50%;
  place-items: center;
  background: var(--blue-100);
  color: var(--blue-800);
  font-weight: 850;
}

.steps p {
  color: var(--muted-strong);
}

/* Tool cards */

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

.tool-card {
  min-height: 240px;
  padding: 1.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.tool-number {
  display: inline-block;
  margin-bottom: 2.2rem;
  color: var(--blue-600);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.tool-card p {
  color: var(--muted-strong);
}

/* Export modes */

.mode-stack {
  display: grid;
  margin-top: 1.7rem;
  gap: 0.72rem;
}

.mode-card {
  padding: 1.05rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.86);
}

.mode-card.recommended {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(43, 118, 232, 0.11);
}

.mode-card h3 {
  margin-bottom: 0.25rem;
  font-size: 1.08rem;
}

.mode-card p {
  margin: 0;
  font-size: 0.95rem;
}

.mode-heading {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.default-tag {
  display: inline-flex;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: var(--blue-100);
  color: var(--blue-800);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* More screens */

.more-screens {
  display: grid;
  max-width: 870px;
  margin: 5.5rem auto 0;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  align-items: center;
  gap: clamp(2rem, 6vw, 4.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.78);
  grid-template-columns: minmax(180px, 0.55fr) minmax(0, 1fr);
}

.device-frame.small {
  width: min(100%, 220px);
}

.more-screens-copy p {
  color: var(--muted-strong);
}

/* Audience */

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

.audience-grid article {
  padding: 1.55rem;
  border-top: 4px solid var(--blue-600);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.audience-grid p {
  color: var(--muted-strong);
}

/* Contact */

.sec-contact {
  border-top: 1px solid var(--line);
  background: var(--surface-soft);
}

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

.contact-card {
  min-width: 0;
  padding: 1.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.contact-card p {
  color: var(--muted-strong);
}

.contact-card a {
  display: inline-block;
  max-width: 100%;
  overflow-wrap: anywhere;
  font-weight: 750;
}

/* Capability and privacy */

.sec-capability {
  background:
    linear-gradient(rgba(3, 23, 56, 0.94), rgba(3, 23, 56, 0.94)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 28px),
    var(--blue-950);
}

.sec-capability h2,
.sec-capability .eyebrow {
  color: #fff;
}

.sec-capability p {
  color: #d9e5fb;
  font-size: 1.08rem;
}

.sec-capability a {
  color: #a9cbff;
}

.privacy-layout {
  display: grid;
  align-items: start;
  gap: clamp(2.5rem, 7vw, 6rem);
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
}

.privacy-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  list-style: none;
  box-shadow: var(--shadow-sm);
}

.privacy-list li {
  display: grid;
  margin: 0;
  padding: 1.25rem 1.35rem;
  border-bottom: 1px solid var(--line);
  gap: 0.18rem;
}

.privacy-list li:last-child {
  border-bottom: 0;
}

.privacy-list strong {
  color: var(--blue-900);
}

.privacy-list span {
  color: var(--muted-strong);
}

.compatibility-card {
  display: grid;
  padding: clamp(1.7rem, 4vw, 2.6rem);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xl);
  background: var(--surface);
  gap: clamp(2rem, 6vw, 5rem);
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1fr);
  box-shadow: var(--shadow-sm);
}

.compatibility-card p {
  color: var(--muted-strong);
}

.closing-cta {
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(184, 205, 245, 0.8), transparent 43%),
    var(--paper);
}

.closing-cta .section-lead {
  max-width: 720px;
  margin-inline: auto;
}

/* Footer */

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--blue-950);
  color: #dbe7fb;
}

.footer-inner {
  display: grid;
  align-items: center;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) auto auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand img {
  border-radius: 8px;
}

.footer-brand-text {
  display: grid;
  line-height: 1.35;
}

.footer-brand-text strong {
  color: #fff;
}

.footer-brand-text span {
  color: #aebedb;
  font-size: 0.82rem;
}

.footer-links a {
  color: #dbe7fb;
  font-size: 0.9rem;
}

.footer-copyright {
  margin: 0;
  color: #aebedb;
  font-size: 0.86rem;
  white-space: nowrap;
}

/* Legal pages */

main.legal {
  width: min(calc(100% - 2rem), var(--prose));
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) 0 clamp(4.5rem, 8vw, 7rem);
}

.legal .back {
  display: inline-flex;
  margin-bottom: 1.15rem;
  align-items: center;
  color: var(--blue-700);
  font-weight: 700;
  text-decoration: none;
}

.legal .back:hover {
  text-decoration: underline;
}

.banner {
  display: block;
  width: 100%;
  margin-bottom: 2.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--blue-800);
  box-shadow: var(--shadow-md);
}

.legal-header {
  margin-bottom: 2rem;
}

.legal h1 {
  font-size: clamp(2.3rem, 6vw, 4rem);
}

.updated {
  color: var(--muted);
  font-size: 0.92rem;
}

.legal section {
  margin-top: 3rem;
}

.legal section h2 {
  padding-bottom: 0.58rem;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.65rem, 3.2vw, 2.15rem);
}

.legal section h3 {
  margin-top: 2rem;
  font-size: 1.3rem;
}

.legal p,
.legal li {
  color: #263651;
}

.legal ul,
.legal ol {
  padding-left: 1.35rem;
}

.legal li {
  margin-bottom: 0.62rem;
}

.legal-summary {
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--blue-200);
  border-left: 5px solid var(--blue-600);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--blue-050);
}

.legal-summary h2 {
  margin-bottom: 0.75rem;
  font-size: 1.35rem;
}

.legal-summary ul {
  margin-bottom: 0;
}

.warning,
.note {
  margin: 1.5rem 0;
  padding: 1.2rem 1.3rem;
  border-radius: var(--radius-md);
}

.warning {
  border: 1px solid #efd18a;
  border-left: 5px solid var(--warning-line);
  background: var(--warning-bg);
}

.note {
  border: 1px solid var(--blue-200);
  border-left: 5px solid var(--blue-600);
  background: var(--blue-050);
}

.positive-list li::marker {
  color: var(--success);
}

/* Lightbox */

.lightbox {
  width: min(94vw, 760px);
  max-height: 94vh;
  padding: 0;
  border: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #091329;
  color: #fff;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.55);
}

.lightbox::backdrop {
  background: rgba(2, 9, 24, 0.84);
  backdrop-filter: blur(5px);
}

.lightbox-inner {
  position: relative;
  display: grid;
  max-height: 94vh;
  padding: 1.25rem;
  place-items: center;
}

.lightbox img {
  display: block;
  max-height: 78vh;
  border-radius: 20px;
}

.lightbox-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  background: rgba(3, 23, 56, 0.82);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox-caption {
  max-width: 640px;
  margin: 1rem 0 0;
  color: #d8e4fa;
  text-align: center;
}

/* Responsive */

@media (max-width: 980px) {
  .header-cta {
    display: none;
  }

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

  .hero-copy-block {
    max-width: 780px;
  }

  .hero-art {
    min-height: 600px;
  }

  .trust-strip ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-strip li:nth-child(2) {
    border-right: 0;
  }

  .trust-strip li:nth-child(n + 3) {
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.17);
  }

  .tool-grid,
  .audience-grid,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (max-width: 780px) {
  html {
    scroll-padding-top: 76px;
  }

  .header-inner {
    min-height: 64px;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    width: 100%;
    margin: 0;
    padding: 0.5rem 0 1rem;
    align-items: stretch;
  }

  .site-nav.is-open {
    display: block;
  }

  .nav-links {
    display: grid;
    gap: 0.2rem;
  }

  .site-nav a {
    display: block;
    min-height: 44px;
    padding: 0.65rem 0.2rem;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero-art {
    min-height: 510px;
  }

  .hero-art .device-frame {
    width: 210px;
  }

  .feature-row,
  .feature-row.reverse,
  .privacy-layout,
  .compatibility-card,
  .more-screens {
    grid-template-columns: 1fr;
  }

  .feature-row.reverse .feature-art,
  .feature-row.reverse .feature-copy {
    order: initial;
  }

  .feature-copy {
    max-width: 100%;
  }

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

  .steps li {
    min-height: 0;
  }

  .more-screens {
    text-align: center;
  }

  .more-screens .thumb-button {
    margin-inline: auto;
  }

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

  .footer-links {
    flex-wrap: wrap;
  }

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

@media (max-width: 560px) {
  body {
    font-size: 15.5px;
  }

  .section-inner,
  .header-inner,
  .footer-inner,
  main.legal {
    width: min(calc(100% - 1.35rem), var(--container));
  }

  .hero h1 {
    font-size: clamp(2.55rem, 13vw, 3.65rem);
  }

  .hero-art {
    min-height: 430px;
  }

  .hero-art .device-frame {
    width: 180px;
    border-width: 6px;
    border-radius: 27px;
  }

  .hero-art .secondary {
    transform: translate(-37%, 22px) rotate(-5deg) scale(0.84);
  }

  .hero-art .tertiary {
    transform: translate(37%, 22px) rotate(5deg) scale(0.84);
  }

  .trust-strip ul,
  .tool-grid,
  .audience-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .trust-strip li,
  .trust-strip li:first-child,
  .trust-strip li:last-child {
    padding: 0.85rem 0;
    border-right: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.17);
  }

  .trust-strip li:first-child {
    border-top: 0;
  }

  .cta-row > * {
    width: 100%;
  }

  .tool-card {
    min-height: 0;
  }

  .device-frame {
    width: min(100%, 245px);
  }

  .feature-art.large .device-frame {
    width: min(100%, 265px);
  }

  .legal-summary,
  .warning,
  .note {
    padding: 1rem;
  }

  .banner {
    border-radius: var(--radius-md);
  }
}

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

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