:root {
  color-scheme: dark;
  --ink: #152035;
  --ink-deep: #0b1322;
  --ink-soft: #1d2c47;
  --signal-blue: #0a84ff;
  --signal-blue-light: #72c0ff;
  --signal-orange: #ff7a3d;
  --signal-green: #35c879;
  --paper: #f4f7fb;
  --white: #ffffff;
  --text: #172033;
  --muted: #5d6b80;
  --line: #dbe3ef;
  --shadow: 0 20px 55px rgba(18, 32, 53, 0.13);
  --radius: 22px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; }
a { color: inherit; }

a:focus-visible {
  outline: 3px solid var(--signal-orange);
  outline-offset: 4px;
  border-radius: 8px;
}

.shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(220, 228, 240, 0.12);
  background: rgba(11, 19, 34, 0.9);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--white);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 18px;
}

.nav-links a {
  color: #d9e6f8;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover { color: var(--white); }

.language-link {
  padding: 6px 10px;
  border: 1px solid rgba(219, 227, 239, 0.28);
  border-radius: 999px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 90px;
  background:
    radial-gradient(circle at 84% 13%, rgba(10, 132, 255, 0.34), transparent 28%),
    radial-gradient(circle at 12% 105%, rgba(255, 122, 61, 0.24), transparent 30%),
    linear-gradient(145deg, #0a1220 0%, #152035 55%, #1d3357 100%);
  color: var(--white);
}

.hero::after {
  position: absolute;
  right: -180px;
  bottom: -210px;
  width: 650px;
  height: 650px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  content: "";
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(330px, 0.72fr);
  align-items: center;
  gap: 68px;
}

.hero-grid > * { min-width: 0; }

.eyebrow {
  margin: 0;
  color: var(--signal-blue-light);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1, h2, h3 { line-height: 1.15; }

h1 {
  max-width: 720px;
  margin: 14px 0 20px;
  font-size: clamp(45px, 6vw, 73px);
  letter-spacing: -0.06em;
}

.hero-copy {
  max-width: 670px;
  margin: 0;
  color: #d6e2f3;
  font-size: 19px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 12px;
  color: var(--white);
  font-weight: 800;
  text-decoration: none;
  transition: background 160ms ease, transform 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.1);
}

.button.primary {
  border-color: var(--signal-orange);
  background: var(--signal-orange);
  box-shadow: 0 13px 34px rgba(255, 122, 61, 0.28);
}

.button.primary:hover { background: #ef6427; }

.button.dark {
  border-color: var(--ink);
  background: var(--ink);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 28px;
  color: #c6d8f0;
  font-size: 13px;
}

.trust-row span::before {
  margin-right: 7px;
  color: var(--signal-green);
  content: "✓";
  font-weight: 900;
}

.hero-panel {
  padding: 27px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 25px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.05));
  box-shadow: 0 28px 85px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(20px);
}

.panel-top,
.panel-item {
  display: flex;
  align-items: center;
}

.panel-top {
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.panel-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.panel-brand img { width: 51px; border-radius: 14px; }
.panel-brand strong { display: block; font-size: 18px; }
.panel-brand small { color: #bed1ec; }

.status-pill {
  padding: 6px 10px;
  border: 1px solid rgba(53, 200, 121, 0.4);
  border-radius: 999px;
  color: #aaf0c8;
  font-size: 12px;
  font-weight: 800;
}

.panel-list {
  display: grid;
  gap: 15px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.panel-item { align-items: flex-start; gap: 12px; color: #e2ebf8; }

.panel-number {
  display: grid;
  width: 29px;
  height: 29px;
  flex: 0 0 29px;
  place-items: center;
  border-radius: 9px;
  background: rgba(10, 132, 255, 0.24);
  color: #bee0ff;
  font-size: 12px;
  font-weight: 900;
}

.section { padding: 90px 0; }
.section.soft { background: #eaf0f8; }
.section.ink { background: var(--ink); color: var(--white); }

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading h2 {
  margin: 8px 0 14px;
  font-size: clamp(32px, 4.3vw, 50px);
  letter-spacing: -0.045em;
}

.section-heading p { margin: 0; color: var(--muted); font-size: 18px; }
.ink .section-heading p { color: #c4d2e6; }
.ink .eyebrow { color: var(--signal-blue-light); }

.grid { display: grid; gap: 20px; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.card-number {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 12px;
  background: #e3f1ff;
  color: var(--signal-blue);
  font-size: 13px;
  font-weight: 900;
}

.card h3 { margin: 18px 0 9px; font-size: 21px; letter-spacing: -0.025em; }
.card p { margin: 0; color: var(--muted); }

.product-shot {
  overflow: hidden;
  border: 1px solid rgba(21, 32, 53, 0.16);
  border-radius: 25px;
  background: #0c1422;
  box-shadow: 0 28px 75px rgba(18, 32, 53, 0.22);
}

.product-shot img { display: block; width: 100%; height: auto; }
.product-shot figcaption { padding: 13px 18px; color: #c9d5e6; font-size: 13px; }

.feature-list { display: grid; gap: 18px; }

.feature-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 20px 0;
  border-top: 1px solid rgba(219, 227, 239, 0.2);
}

.feature-row:first-child { border-top: 0; padding-top: 0; }
.feature-icon { color: var(--signal-orange); font-size: 23px; line-height: 1; }
.feature-row h3 { margin: 0 0 5px; font-size: 20px; }
.feature-row p { margin: 0; color: #c4d2e6; }

.privacy-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 56px; align-items: start; }

.check-list,
.install-steps,
.compatibility-list,
.faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list { display: grid; gap: 13px; }
.check-list li { display: flex; gap: 10px; color: #d8e4f4; }
.check-list li::before { color: var(--signal-green); content: "✓"; font-weight: 900; }

.install-steps { display: grid; gap: 18px; counter-reset: install; }
.install-steps li { position: relative; min-height: 47px; padding-left: 62px; color: var(--muted); }
.install-steps li::before {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--white);
  content: counter(install);
  counter-increment: install;
  font-size: 14px;
  font-weight: 900;
}

.install-steps strong { display: block; color: var(--text); }

.download-card {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.download-card h3 { margin: 0 0 10px; font-size: 24px; }
.download-card p { color: var(--muted); }

.metadata {
  display: grid;
  gap: 10px;
  margin: 22px 0;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metadata div { display: grid; grid-template-columns: 125px 1fr; gap: 14px; }
.metadata dt { color: var(--muted); }
.metadata dd { margin: 0; font-weight: 750; overflow-wrap: anywhere; }
.metadata code { font-size: 11px; }

.download-verification {
  margin: -5px 0 22px;
  color: var(--muted);
}

.download-verification summary {
  width: fit-content;
  cursor: pointer;
  color: var(--signal-blue);
  font-size: 14px;
  font-weight: 800;
}

.download-verification summary:focus-visible {
  outline: 3px solid var(--signal-orange);
  outline-offset: 4px;
  border-radius: 5px;
}

.download-verification p {
  margin: 10px 0 7px;
  font-size: 14px;
  line-height: 1.55;
}

.download-verification code {
  display: block;
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 12px;
  line-height: 1.55;
}

.compatibility-list { display: grid; gap: 13px; }
.compatibility-list li { padding: 16px 18px; border-left: 3px solid var(--signal-blue); background: #eaf4ff; color: #34445d; }
.compatibility-list strong { color: var(--ink); }

.faq-list { display: grid; gap: 13px; }
.faq-list details { padding: 18px 20px; border: 1px solid var(--line); border-radius: 15px; background: var(--white); }
.faq-list summary { cursor: pointer; color: var(--ink); font-weight: 800; }
.faq-list p { margin: 12px 0 0; color: var(--muted); }

.reading-list { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 22px; }
.reading-list a { color: var(--signal-blue); font-weight: 750; }

.final-cta { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 38px; border-radius: 26px; background: linear-gradient(125deg, var(--ink), #243e6b); color: var(--white); }
.final-cta h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.04em; }
.final-cta p { max-width: 620px; margin: 0; color: #c7d7ed; }

footer { padding: 30px 0; background: #0b1322; color: #b9c8dd; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links a { color: #e3ebf7; }

@media (max-width: 820px) {
  .nav { min-height: 0; flex-direction: column; align-items: flex-start; padding: 15px 0; }
  .nav-links { justify-content: flex-start; gap: 12px 16px; }
  .hero { padding: 70px 0 66px; }
  .hero-grid,
  .privacy-grid,
  .grid.three,
  .grid.two { grid-template-columns: 1fr; }
  .hero-grid { gap: 40px; }
  .section { padding: 68px 0; }
  .final-cta,
  .footer-row { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 480px) {
  .shell { width: min(100% - 28px, 1160px); }
  h1 { font-size: clamp(40px, 13vw, 55px); }
  .hero-copy,
  .section-heading p { font-size: 17px; }
  .hero-panel,
  .card,
  .download-card,
  .final-cta { padding: 22px; }
  .metadata div { grid-template-columns: 1fr; gap: 2px; }
}