:root {
  color-scheme: light;
  --brand-blue: #1756a9;
  --brand-blue-dark: #0c3977;
  --brand-amber: #f4b942;
  --brand-amber-dark: #7a4c00;
  --ink: #16202a;
  --muted: #4e5d6b;
  --surface: #ffffff;
  --surface-alt: #edf3f7;
  --surface-warm: #fff8e8;
  --border: #bdc9d3;
  --success: #166345;
  --focus: #b33a00;
  --hero-overlay: rgba(5, 20, 39, 0.78);
  --shadow: 0 10px 28px rgba(15, 42, 70, 0.15);
  --content-width: 1180px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #f5f8fa;
  --muted: #c8d3dc;
  --surface: #12191f;
  --surface-alt: #1c2831;
  --surface-warm: #302819;
  --border: #60727f;
  --success: #75d5ae;
  --focus: #ffbd6a;
  --hero-overlay: rgba(3, 12, 22, 0.82);
  --shadow: 0 10px 28px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 280px;
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.75;
}

body,
button,
a {
  letter-spacing: 0;
}

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

a {
  color: var(--brand-blue);
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.2em;
}

:root[data-theme="dark"] a {
  color: #82b9ff;
}

a:hover {
  text-decoration-thickness: 0.18em;
}

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

.skip-link {
  position: fixed;
  inset-inline-start: 1rem;
  top: 1rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  background: var(--surface);
  color: var(--ink);
  border: 2px solid var(--focus);
  transform: translateY(-180%);
}

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

.site-header {
  position: relative;
  z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  width: min(100% - 2rem, var(--content-width));
  min-height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.brand-link img {
  width: 48px;
  height: 48px;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.65rem;
}

.site-nav ul {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.25rem 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 3px solid transparent;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--brand-blue);
  border-bottom-color: var(--brand-amber);
}

:root[data-theme="dark"] .site-nav a:hover,
:root[data-theme="dark"] .site-nav a[aria-current="page"] {
  color: #9fc9ff;
}

.utility-button {
  min-height: 44px;
  padding: 0.45rem 0.7rem;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.utility-button:hover {
  border-color: var(--brand-blue);
}

.hero {
  position: relative;
  min-height: 500px;
  height: calc(100vh - 76px);
  max-height: 640px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background-color: #071a2b;
  background-image: url("hero-background.png");
  background-position: center;
  background-size: cover;
  color: #ffffff;
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background: var(--hero-overlay);
}

.hero-inner {
  position: relative;
  width: min(100% - 2rem, var(--content-width));
  margin-inline: auto;
  padding-block: 3rem;
}

.hero-logo {
  width: 104px;
  height: 104px;
  margin-block-end: 1.25rem;
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.35));
}

.hero h1 {
  max-width: 850px;
  margin: 0;
  font-size: 3.25rem;
  line-height: 1.15;
}

.hero .lead {
  max-width: 760px;
  margin: 1.1rem 0 0;
  color: #f5f8fa;
  font-size: 1.35rem;
  line-height: 1.65;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-block-start: 1.6rem;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.2rem;
  border: 2px solid transparent;
  border-radius: 6px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
}

.button-primary {
  background: var(--brand-amber);
  color: #17120a;
  border-color: var(--brand-amber);
}

.button-primary:hover {
  background: #ffd174;
  border-color: #ffd174;
}

.button-secondary {
  background: #ffffff;
  color: #0c3977;
  border-color: #ffffff;
}

.button-outline {
  background: transparent;
  color: var(--brand-blue);
  border-color: var(--brand-blue);
}

:root[data-theme="dark"] .button-outline {
  color: #a8d0ff;
  border-color: #a8d0ff;
}

.trust-band {
  background: var(--brand-blue-dark);
  color: #ffffff;
}

.trust-list {
  width: min(100% - 2rem, var(--content-width));
  margin: 0 auto;
  padding: 1rem 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  list-style: none;
  text-align: center;
  font-weight: 700;
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--surface-alt);
}

.section-warm {
  background: var(--surface-warm);
}

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

.narrow {
  max-width: 830px;
}

.section-heading {
  max-width: 760px;
  margin-block-end: 2rem;
}

.section-heading h2,
.page-heading h1 {
  margin: 0;
  font-size: 2.25rem;
  line-height: 1.25;
}

.section-heading p,
.page-heading p {
  margin-block: 0.8rem 0;
  color: var(--muted);
}

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

.feature-card {
  min-height: 100%;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 5px solid var(--brand-blue);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.feature-card:nth-child(2n) {
  border-top-color: var(--brand-amber-dark);
}

.feature-card:nth-child(3n) {
  border-top-color: var(--success);
}

.feature-card h3 {
  margin-block: 0 0.4rem;
  font-size: 1.25rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
}

.split-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.split-content h2,
.split-content h3 {
  margin-block-start: 0;
}

.check-list {
  margin: 1rem 0 0;
  padding-inline-start: 1.4rem;
}

.check-list li {
  margin-block: 0.55rem;
}

.page-hero {
  padding: 4rem 0 3.5rem;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}

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

.page-heading p {
  max-width: 800px;
  font-size: 1.15rem;
}

.prose {
  padding-block: 3rem 5rem;
}

.prose h2 {
  margin-block: 2.4rem 0.7rem;
  font-size: 1.65rem;
  line-height: 1.35;
}

.prose h2:first-child {
  margin-block-start: 0;
}

.prose h3 {
  margin-block: 1.6rem 0.5rem;
  font-size: 1.2rem;
}

.prose p,
.prose li {
  max-width: 82ch;
}

.prose code {
  padding: 0.15rem 0.35rem;
  overflow-wrap: anywhere;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: Consolas, monospace;
}

.notice {
  margin-block: 1.5rem;
  padding: 1rem 1.2rem;
  background: var(--surface-warm);
  border-inline-start: 6px solid var(--brand-amber-dark);
}

.download-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: start;
}

.download-panel {
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.download-panel h2 {
  margin-block-start: 0;
}

.download-option {
  padding-block: 1.25rem;
  border-top: 1px solid var(--border);
}

.download-option:first-of-type {
  border-top: 0;
}

.download-option h3 {
  margin: 0;
}

.download-option p {
  margin: 0.35rem 0 0.8rem;
  color: var(--muted);
}

.release-meta {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

.status {
  color: var(--success);
  font-weight: 700;
}

.support-email {
  display: inline-block;
  font-size: 1.2rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 2.5rem 0;
  background: #10202c;
  color: #eaf1f5;
}

.footer-inner {
  width: min(100% - 2rem, var(--content-width));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
}

.footer-brand {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.site-footer p {
  margin-block: 0.35rem;
}

.site-footer a {
  color: #aad0ff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  justify-content: flex-end;
  gap: 0.5rem 1rem;
}

.footer-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

[hidden] {
  display: none !important;
}

@media (max-width: 1040px) {
  .header-inner {
    padding-block: 0.75rem;
    flex-wrap: wrap;
  }

  .site-nav {
    order: 3;
    width: 100%;
  }

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

@media (max-width: 760px) {
  body {
    font-size: 17px;
  }

  .header-inner {
    width: min(100% - 1.25rem, var(--content-width));
  }

  .brand-link span {
    max-width: 10rem;
    white-space: normal;
    line-height: 1.25;
  }

  .brand-link img {
    width: 42px;
    height: 42px;
  }

  .header-actions {
    gap: 0.35rem;
  }

  .utility-button {
    padding-inline: 0.55rem;
    font-size: 0.82rem;
  }

  .site-nav ul {
    justify-content: flex-start;
    gap-inline: 0.7rem;
  }

  .hero {
    min-height: 470px;
    height: calc(100vh - 145px);
    max-height: 570px;
    background-position: 58% center;
  }

  .hero h1 {
    font-size: 2.35rem;
  }

  .hero .lead {
    font-size: 1.1rem;
  }

  .hero-logo {
    width: 82px;
    height: 82px;
  }

  .trust-list,
  .feature-grid,
  .split-content,
  .download-layout,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .trust-list {
    text-align: start;
    gap: 0.45rem;
  }

  .section {
    padding-block: 3.25rem;
  }

  .section-heading h2,
  .page-heading h1 {
    font-size: 1.8rem;
  }

  .page-hero {
    padding-block: 3rem 2.5rem;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 430px) {
  .brand-link span {
    display: none;
  }

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

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

@media (forced-colors: active) {
  .feature-card,
  .download-panel,
  .button,
  .utility-button {
    border: 2px solid ButtonText;
  }

  .hero::before {
    background: Canvas;
  }

  .hero {
    color: CanvasText;
  }
}