:root {
  --color-primary: #5bc0de;
  --color-primary-deep: #2f7f95;
  --color-accent: #323842;
  --color-bg: #f7fafc;
  --color-surface: rgba(255, 255, 255, 0.88);
  --color-surface-strong: #ffffff;
  --color-border: #d9e4ea;
  --color-text: #27313b;
  --color-text-soft: #5a6672;
  --color-shadow: rgba(20, 42, 56, 0.12);
  --color-hero-glow: rgba(91, 192, 222, 0.18);
  --gradient-page: radial-gradient(circle at top left, rgba(91, 192, 222, 0.18), transparent 34%), linear-gradient(180deg, #f7fafc 0%, #eef5f8 100%);
  --container-width: min(1120px, calc(100vw - 2rem));
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-lg: 0 24px 60px var(--color-shadow);
  --shadow-md: 0 16px 32px rgba(20, 42, 56, 0.08);
}

[data-theme="dark"] {
  --color-primary: #69cce7;
  --color-primary-deep: #4aa7be;
  --color-accent: #f3f7fb;
  --color-bg: #0f1720;
  --color-surface: rgba(22, 32, 42, 0.9);
  --color-surface-strong: #16202a;
  --color-border: #2a3947;
  --color-text: #ecf4fa;
  --color-text-soft: #9eb4c4;
  --color-shadow: rgba(0, 0, 0, 0.28);
  --color-hero-glow: rgba(91, 192, 222, 0.14);
  --gradient-page: radial-gradient(circle at top left, rgba(91, 192, 222, 0.16), transparent 34%), linear-gradient(180deg, #0f1720 0%, #111c26 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  background: var(--gradient-page);
  color: var(--color-text);
  line-height: 1.55;
}

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

a {
  color: inherit;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: var(--color-surface-strong);
  border: 1px solid var(--color-border);
}

.skip-link:focus {
  top: 1rem;
}

.container {
  width: var(--container-width);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--color-bg) 78%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 72%, transparent);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}

.brand strong {
  display: block;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text-soft);
}

.main-nav {
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 0.95rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-text-soft);
}

.main-nav a:hover,
.main-nav a:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  color: var(--color-primary-deep);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  font: inherit;
  cursor: pointer;
  box-shadow: 0 12px 20px rgba(20, 42, 56, 0.06);
}

.theme-toggle-icon {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 2px solid currentColor;
  position: relative;
}

[data-theme="light"] .theme-toggle-icon::after {
  content: "";
  position: absolute;
  inset: 0.18rem;
  border-radius: 50%;
  background: currentColor;
}

[data-theme="dark"] .theme-toggle-icon::after {
  content: "";
  position: absolute;
  inset: -0.05rem;
  border-radius: 50%;
  background: var(--color-surface);
  transform: translateX(0.25rem);
}

.hero,
.section {
  padding: 5rem 0;
}

.section-alt {
  background: color-mix(in srgb, var(--color-surface) 68%, transparent);
  border-top: 1px solid color-mix(in srgb, var(--color-border) 64%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 64%, transparent);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--color-primary-deep);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(2.8rem, 5vw, 4.6rem);
  max-width: 11ch;
}

.hero-text,
.section-heading p,
.feature-card p,
.step-card p,
.showcase-card p,
.download-card p,
.download-note-card p,
.support-copy p,
.support-card li,
.faq-list p,
.footer-credit,
.site-footer p {
  color: var(--color-text-soft);
}

.hero-text {
  margin: 1.25rem 0 0;
  max-width: 35rem;
  font-size: 1.08rem;
}

.hero-meta,
.hero-actions,
.download-actions,
.support-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.hero-meta {
  margin: 1.6rem 0 0;
}

.hero-actions {
  margin: 1.8rem 0 0;
}

.meta-pill,
.release-badge,
.download-label,
.display-label,
.menu-pill,
.shortcut-pill {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-surface-strong) 90%, transparent);
}

.meta-pill,
.release-badge,
.download-label {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.3rem 0.75rem;
  font-size: 0.82rem;
}

.release-status,
.fine-print {
  font-size: 0.95rem;
}

.release-status {
  margin: 1rem 0 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  border-radius: 999px;
  padding: 0 1.3rem;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.button:hover,
.button:focus-visible,
.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-deep) 100%);
  color: #06222d;
  box-shadow: var(--shadow-md);
}

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

.button-wide {
  width: 100%;
}

.text-link {
  text-decoration: none;
  color: var(--color-primary-deep);
  font-weight: 600;
}

.hero-visual,
.feature-card,
.step-card,
.showcase-card,
.download-card,
.download-note-card,
.support-card,
.faq-list details {
  border: 1px solid color-mix(in srgb, var(--color-border) 82%, transparent);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.hero-visual {
  position: relative;
  padding: 1.1rem;
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: -20% auto auto -12%;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: var(--color-hero-glow);
  filter: blur(4px);
}

.floating-chip {
  position: absolute;
  right: 1.2rem;
  top: 1.1rem;
  z-index: 1;
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-primary) 14%, var(--color-surface-strong));
  border: 1px solid color-mix(in srgb, var(--color-primary) 36%, var(--color-border));
  font-size: 0.84rem;
  color: var(--color-primary-deep);
}

.mock-window {
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--radius-xl) - 6px);
  border: 1px solid color-mix(in srgb, var(--color-border) 80%, transparent);
  background: color-mix(in srgb, var(--color-surface-strong) 94%, transparent);
}

.mock-window-bar,
.display-header,
.mock-menu {
  display: flex;
  align-items: center;
}

.mock-window-bar {
  justify-content: space-between;
  min-height: 3.4rem;
  padding: 0 1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 74%, transparent);
}

.traffic-lights {
  display: inline-flex;
  gap: 0.35rem;
}

.traffic-lights span {
  width: 0.78rem;
  height: 0.78rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-primary) 25%, var(--color-text-soft));
}

.traffic-lights span:nth-child(2) {
  background: rgba(255, 183, 77, 0.9);
}

.traffic-lights span:nth-child(3) {
  background: rgba(104, 211, 145, 0.92);
}

.mock-window-title {
  font-weight: 700;
}

.mock-window-badge {
  color: var(--color-text-soft);
  font-size: 0.88rem;
}

.mock-window-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 3rem minmax(0, 0.92fr);
  gap: 0.6rem;
  padding: 1rem;
}

.mock-display {
  border: 1px solid color-mix(in srgb, var(--color-border) 82%, transparent);
  border-radius: 22px;
  padding: 0.9rem;
  background: color-mix(in srgb, var(--color-surface) 78%, transparent);
}

.display-header {
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.82rem;
  color: var(--color-text-soft);
}

.display-label,
.menu-pill,
.shortcut-pill {
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
}

.tile-scene {
  position: relative;
  min-height: 13.2rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(91, 192, 222, 0.08) 0%, rgba(91, 192, 222, 0.03) 100%);
  border: 1px dashed color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
}

.tile-scene-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 0.6rem;
  padding: 0.65rem;
}

.tile-scene-nested {
  display: grid;
  grid-template-columns: 1.22fr 0.88fr;
  grid-template-rows: repeat(3, 1fr);
  gap: 0.6rem;
  padding: 0.65rem;
}

.tile,
.nest {
  display: block;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--color-border) 84%, transparent);
  background: color-mix(in srgb, var(--color-surface-strong) 88%, transparent);
}

.tile.active,
.svg-focus {
  background: linear-gradient(135deg, rgba(91, 192, 222, 0.96), rgba(47, 127, 149, 0.88));
  color: #03232d;
  font-weight: 700;
}

.tile.hint {
  border-style: dashed;
  color: var(--color-text-soft);
}

.tile-a {
  display: flex;
  align-items: end;
  justify-content: start;
  padding: 0.8rem;
}

.nest-large {
  grid-row: 1 / span 3;
}

.display-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-deep);
  font-size: 1.5rem;
}

.connector-line {
  width: 1px;
  height: 5rem;
  background: color-mix(in srgb, var(--color-primary) 42%, var(--color-border));
}

.mock-menu {
  flex-wrap: wrap;
  gap: 0.55rem;
  padding: 0 1rem 1rem;
}

.section-heading {
  max-width: 44rem;
  margin-bottom: 2rem;
}

.feature-grid,
.steps-grid,
.showcase-grid,
.download-grid,
.support-grid,
.footer-grid {
  display: grid;
  gap: 1.2rem;
}

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

.steps-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.showcase-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.download-grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
}

.support-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.9fr);
  align-items: start;
}

.feature-card,
.step-card,
.showcase-card,
.download-card,
.download-note-card,
.support-card {
  padding: 1.35rem;
}

.feature-card h3,
.step-card h3,
.showcase-card h3,
.download-card h3,
.download-note-card h3,
.support-card h3 {
  margin-top: 0;
  margin-bottom: 0.65rem;
  font-size: 1.08rem;
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.8rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-primary) 22%, var(--color-surface-strong));
  color: var(--color-primary-deep);
  font-weight: 700;
}

.shortcut-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.9rem;
}

.showcase-card svg {
  width: 100%;
  height: auto;
  margin-bottom: 1rem;
}

.svg-frame,
.svg-card {
  fill: color-mix(in srgb, var(--color-surface-strong) 92%, transparent);
  stroke: color-mix(in srgb, var(--color-border) 88%, transparent);
  stroke-width: 2;
}

.svg-accent {
  fill: color-mix(in srgb, var(--color-primary) 24%, var(--color-surface-strong));
  stroke: color-mix(in srgb, var(--color-primary) 48%, var(--color-border));
  stroke-width: 2;
}

.svg-focus {
  stroke: color-mix(in srgb, var(--color-primary) 72%, transparent);
  stroke-width: 2;
}

.svg-arrow,
.svg-arrow-tip {
  fill: none;
  stroke: var(--color-primary-deep);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.download-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.download-heading h3 {
  margin: 0.2rem 0 0;
  font-size: 1.8rem;
}

.download-actions {
  margin-bottom: 1rem;
}

.download-note-card ol,
.support-list {
  margin: 0;
  padding-left: 1.2rem;
}

.support-list li + li,
.download-note-card li + li {
  margin-top: 0.55rem;
}

.faq-list {
  display: grid;
  gap: 0.9rem;
}

.faq-list details {
  padding: 1rem 1.2rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
}

.faq-list p {
  margin-bottom: 0;
}

.site-footer {
  padding: 2rem 0 3rem;
}

.footer-grid {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}

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

.footer-links a {
  text-decoration: none;
  color: var(--color-text-soft);
}

.footer-credit {
  grid-column: 1 / -1;
  margin: 0;
}

@media (max-width: 980px) {
  .hero-grid,
  .feature-grid,
  .steps-grid,
  .showcase-grid,
  .download-grid,
  .support-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .mock-window-body {
    grid-template-columns: 1fr;
  }

  .display-connector {
    flex-direction: row;
  }

  .connector-line {
    width: 5rem;
    height: 1px;
  }

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

@media (max-width: 760px) {
  .topbar {
    flex-wrap: wrap;
    padding: 0.8rem 0;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    padding-bottom: 0.4rem;
  }

  .hero,
  .section {
    padding: 4rem 0;
  }

  .hero h1 {
    max-width: none;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}