:root {
  --bg: #06101c;
  --bg-soft: #0a1727;
  --panel: rgba(15, 31, 49, 0.82);
  --panel-strong: #10243a;
  --text: #f7faff;
  --muted: #a9b8c9;
  --line: rgba(185, 209, 232, 0.14);
  --accent: #61baff;
  --accent-2: #b9e2ff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --radius: 24px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 8%, rgba(46, 150, 230, 0.16), transparent 28rem),
    radial-gradient(circle at 10% 45%, rgba(35, 91, 155, 0.12), transparent 26rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: inherit; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  z-index: 99;
  padding: .8rem 1rem;
  background: white;
  color: black;
  border-radius: .6rem;
}
.skip-link:focus { left: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(calc(100% - 32px), var(--max));
  margin: 18px auto 0;
  padding: 12px 14px 12px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(6, 16, 28, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .22);
}

.brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: -.02em;
}

.site-header nav { display: flex; gap: .3rem; }
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  padding: .62rem .85rem;
  border-radius: .7rem;
  font-size: .95rem;
}
.site-header nav a:hover,
.site-header nav a:focus-visible { color: var(--text); background: rgba(255,255,255,.06); }

main { overflow: hidden; }
.hero {
  width: min(calc(100% - 40px), var(--max));
  min-height: 680px;
  margin: 0 auto;
  padding: 110px 0 80px;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 6vw;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .17em;
  text-transform: uppercase;
}

h1, h2, h3 { margin-top: 0; line-height: 1.08; letter-spacing: -.045em; }
h1 { max-width: 780px; margin-bottom: 1.4rem; font-size: clamp(3.25rem, 7vw, 6.6rem); }
h2 { margin-bottom: 1rem; font-size: clamp(2rem, 4.2vw, 4rem); }
h3 { font-size: 1.25rem; }
p { color: var(--muted); }
.hero-text { max-width: 680px; margin: 0 0 2.2rem; font-size: clamp(1.06rem, 1.6vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 50px;
  padding: .78rem 1.15rem;
  border: 1px solid transparent;
  border-radius: .9rem;
  text-decoration: none;
  font-weight: 760;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary {
  color: #03111d;
  background: linear-gradient(135deg, #d6efff, #63bcff);
  box-shadow: 0 14px 36px rgba(71, 168, 240, .22);
}
.button.secondary { border-color: var(--line); background: rgba(255,255,255,.035); }
.button.small { min-height: 42px; padding: .6rem .9rem; font-size: .92rem; }
.button.disabled { opacity: .6; cursor: default; }
.button.disabled:hover { transform: none; }

.hero-mark {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  width: min(100%, 480px);
  margin-inline: auto;
}
.hero-mark::before {
  content: "";
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  background: rgba(55, 159, 236, .13);
  filter: blur(34px);
}
.hero-mark img {
  position: relative;
  z-index: 2;
  width: 54%;
  filter: drop-shadow(0 24px 55px rgba(42, 155, 235, .28));
}
.orbit {
  position: absolute;
  border: 1px solid rgba(151, 204, 246, .15);
  border-radius: 50%;
}
.orbit-one { inset: 8%; }
.orbit-two { inset: 23%; border-style: dashed; transform: rotate(20deg); }

.section {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 96px 0;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.1rem;
}
.section-heading > p { max-width: 460px; margin: 0; }
.section-heading h2 { margin-bottom: 0; }

.app-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 22px; }
.app-card {
  grid-column: span 12;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(20, 42, 66, .87), rgba(10, 25, 41, .8));
  box-shadow: var(--shadow);
}
.app-card-copy { padding: clamp(28px, 5vw, 58px); }
.app-card-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 410px;
  padding: 28px;
  background:
    linear-gradient(rgba(255,255,255,.02), rgba(255,255,255,.02)),
    radial-gradient(circle at 45% 45%, rgba(75, 173, 244, .2), transparent 45%),
    #091726;
  border-left: 1px solid var(--line);
}
.app-card-visual img { width: min(88%, 420px); filter: drop-shadow(0 25px 46px rgba(0,0,0,.42)); }
.app-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin-bottom: 1.1rem; }
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: .28rem .58rem;
  border: 1px solid rgba(112, 196, 255, .24);
  border-radius: 999px;
  color: var(--accent-2);
  background: rgba(67, 156, 223, .09);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .03em;
}
.platform { color: var(--muted); font-size: .88rem; }
.app-card h3 { margin-bottom: .7rem; font-size: clamp(2rem, 4vw, 3.4rem); }
.app-tagline { margin: 0 0 1.5rem; font-size: 1.12rem; }
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .7rem 1rem;
  margin: 1.6rem 0 2rem;
  padding: 0;
  list-style: none;
}
.feature-list li {
  position: relative;
  padding-left: 1.2rem;
  color: #d4deea;
  font-size: .94rem;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(97,186,255,.7);
}
.app-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.download-notice {
  margin-top: 1.15rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(112, 196, 255, .2);
  border-radius: 14px;
  background: rgba(6, 18, 31, .45);
}
.download-notice h4 {
  margin: 0 0 .45rem;
  color: #edf6ff;
  font-size: .96rem;
  letter-spacing: -.01em;
}
.download-notice p {
  margin: 0;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.55;
}
.download-notice a {
  display: inline-block;
  margin-top: .65rem;
  color: var(--accent-2);
  font-size: .84rem;
  font-weight: 750;
}
.download-notice a:hover { color: #fff; }

.about-section {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: clamp(40px, 8vw, 100px);
  align-items: start;
}
.about-copy > p { margin-top: 0; font-size: 1.12rem; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 2.2rem; }
.principles article { padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.025); }
.principles span { color: var(--accent); font-size: .76rem; font-weight: 800; }
.principles h3 { margin: .65rem 0 .55rem; letter-spacing: -.025em; }
.principles p { margin: 0; font-size: .9rem; }

.support-section { padding-bottom: 36px; }
.support-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(30px, 6vw, 68px);
  border: 1px solid rgba(119, 196, 250, .23);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 90% 10%, rgba(88, 183, 248, .17), transparent 22rem),
    linear-gradient(135deg, rgba(20, 48, 76, .86), rgba(9, 23, 39, .93));
  box-shadow: var(--shadow);
}
.support-card h2 { max-width: 720px; }
.support-card p:not(.eyebrow) { max-width: 660px; margin-bottom: 0; }
.support-card .button { flex: 0 0 auto; }

.contact-section { padding-top: 36px; padding-bottom: 116px; }
.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(30px, 6vw, 68px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.025);
}
.contact-card h2 { max-width: 760px; }
.contact-card p:not(.eyebrow) { max-width: 720px; }
.contact-card .contact-safety { margin-bottom: 0; font-size: .88rem; }
.contact-card .button { flex: 0 0 auto; }
.footer-contact { color: var(--accent-2); }

footer {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 28px 0 44px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.footer-brand { display: flex; align-items: center; gap: .7rem; }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand span, footer > p { color: var(--muted); font-size: .84rem; }
footer > p { margin: 0; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 50;
  transform: translate(-50%, 20px);
  padding: .8rem 1rem;
  border: 1px solid var(--line);
  border-radius: .85rem;
  color: var(--text);
  background: rgba(8, 20, 34, .94);
  box-shadow: 0 18px 50px rgba(0,0,0,.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.notice { padding: 1rem; border: 1px solid var(--line); border-radius: 1rem; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 82px; text-align: center; }
  .hero-text { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .hero-mark { width: min(72vw, 390px); }
  .app-card { grid-template-columns: 1fr; }
  .app-card-visual { min-height: 330px; border-left: 0; border-top: 1px solid var(--line); }
  .about-section { grid-template-columns: 1fr; }
  .support-card, .contact-card { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 650px) {
  .site-header { width: min(calc(100% - 20px), var(--max)); margin-top: 10px; }
  .brand span { display: none; }
  .site-header nav a { padding-inline: .64rem; font-size: .88rem; }
  .hero, .section, footer { width: min(calc(100% - 28px), var(--max)); }
  .hero { min-height: auto; padding: 72px 0 42px; }
  h1 { font-size: clamp(2.75rem, 15vw, 4.6rem); }
  .section { padding: 68px 0; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: .5rem; }
  .feature-list { grid-template-columns: 1fr; }
  .principles { grid-template-columns: 1fr; }
  .contact-section { padding-bottom: 80px; }
  footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}