:root {
  color-scheme: dark;
  --background: #061110;
  --surface: rgba(20, 43, 40, 0.78);
  --surface-strong: #102725;
  --line: rgba(255, 255, 255, 0.11);
  --text: #f4f8f7;
  --muted: #a7b9b6;
  --accent: #36d3b0;
  --accent-strong: #12a887;
  --gold: #f0b85d;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 84% -10%, rgba(54, 211, 176, 0.22), transparent 32rem),
    radial-gradient(circle at 10% 28%, rgba(240, 184, 93, 0.11), transparent 26rem),
    var(--background);
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: inherit;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #04100e;
  background: var(--accent);
  border-radius: 10px;
  transform: translateY(-150%);
}

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

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(6, 17, 16, 0.76);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
}

.nav {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.32);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.hero {
  padding: 86px 0 54px;
}

.hero-grid {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 0.85fr) minmax(380px, 1.15fr);
  gap: 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 24px;
  height: 2px;
  background: currentColor;
  content: "";
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(2.8rem, 7vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 9px;
  font-size: 1.18rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.lead {
  max-width: 690px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.27rem);
}

.accent-text {
  color: var(--accent);
}

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

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 15px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.94rem;
  font-weight: 760;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.11);
  transform: translateY(-2px);
}

.button.primary {
  border-color: transparent;
  color: #031512;
  background: linear-gradient(135deg, #5de4c6, #22b996);
  box-shadow: 0 10px 28px rgba(34, 185, 150, 0.22);
}

.hero-art {
  overflow: hidden;
  height: clamp(300px, 31vw, 455px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}

.app-icon {
  width: 150px;
  height: 150px;
  margin-bottom: 28px;
  border-radius: 34px;
  box-shadow: var(--shadow);
}

.section {
  padding: 76px 0;
}

.section-header {
  max-width: 700px;
  margin-bottom: 34px;
}

.section-header p {
  color: var(--muted);
}

.feature-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
  box-shadow: 0 14px 42px rgba(0, 0, 0, 0.14);
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.icon {
  display: grid;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 14px;
  color: #031512;
  background: linear-gradient(135deg, var(--accent), #8cf0d8);
  font-size: 1.25rem;
  font-weight: 900;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.showcase-grid figure {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.showcase-grid img {
  width: 100%;
  aspect-ratio: 2.17 / 1;
  object-fit: cover;
}

.premium-panel {
  display: grid;
  align-items: center;
  padding: 40px;
  border: 1px solid rgba(240, 184, 93, 0.28);
  border-radius: 28px;
  background:
    radial-gradient(circle at 90% 10%, rgba(240, 184, 93, 0.22), transparent 24rem),
    linear-gradient(135deg, rgba(44, 40, 26, 0.8), rgba(14, 36, 33, 0.86));
  box-shadow: var(--shadow);
  grid-template-columns: 1fr auto;
  gap: 34px;
}

.premium-panel p {
  max-width: 720px;
  margin-bottom: 0;
  color: #c9d2d0;
}

.premium-mark {
  color: var(--gold);
  font-size: 4rem;
  line-height: 1;
}

.support-hero {
  padding: 82px 0 44px;
}

.support-hero h1 {
  max-width: 760px;
}

.contact-grid {
  margin-top: 34px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-card {
  display: block;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.055);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease;
}

.contact-card:hover,
.contact-card:focus-visible {
  border-color: rgba(54, 211, 176, 0.55);
  transform: translateY(-3px);
}

.contact-card strong,
.contact-card span {
  display: block;
}

.contact-card span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.94rem;
}

.faq-list {
  display: grid;
  gap: 12px;
}

details {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.045);
}

summary {
  position: relative;
  padding: 20px 56px 20px 22px;
  cursor: pointer;
  font-weight: 740;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  position: absolute;
  top: 19px;
  right: 22px;
  color: var(--accent);
  content: "+";
  font-size: 1.4rem;
  line-height: 1;
}

details[open] summary::after {
  content: "−";
}

.answer {
  padding: 0 22px 20px;
  color: var(--muted);
}

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

.answer a {
  color: var(--accent);
}

.notice {
  padding: 22px;
  border-left: 3px solid var(--accent);
  border-radius: 0 16px 16px 0;
  color: var(--muted);
  background: rgba(54, 211, 176, 0.07);
}

.site-footer {
  margin-top: 48px;
  padding: 34px 0 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

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

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-art {
    order: -1;
  }

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

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .container {
    width: min(100% - 28px, 1160px);
  }

  .nav {
    min-height: 68px;
  }

  .nav-links a:not(:last-child) {
    display: none;
  }

  .hero,
  .support-hero {
    padding-top: 56px;
  }

  .hero-grid {
    gap: 34px;
  }

  .hero-art {
    height: clamp(220px, 58vw, 360px);
    border-radius: 18px;
  }

  .section {
    padding: 56px 0;
  }

  .feature-grid,
  .contact-grid,
  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .premium-panel {
    padding: 28px;
    grid-template-columns: 1fr;
  }

  .premium-mark {
    display: none;
  }

  .footer-row {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}