:root {
  --bg: #081120;
  --bg-soft: #0f172a;
  --panel: rgba(15, 23, 42, 0.82);
  --panel-strong: #111c34;
  --text: #e5eefc;
  --muted: #9fb0cc;
  --line: rgba(148, 163, 184, 0.18);
  --brand: #38bdf8;
  --brand-strong: #0ea5e9;
  --brand-soft: rgba(56, 189, 248, 0.14);
  --accent: #a78bfa;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --radius-sm: 14px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(167, 139, 250, 0.18), transparent 24%),
    linear-gradient(180deg, #07101d 0%, #081120 30%, #0a1220 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(8, 17, 32, 0.72);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-logo {
  height: 58px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  padding: 10px 14px;
  border-radius: 999px;
  color: #d6e6ff;
  font-size: 0.97rem;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  background: rgba(148, 163, 184, 0.12);
  color: #ffffff;
  outline: none;
  transform: translateY(-1px);
}

.nav-links .nav-cta {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-strong) 100%);
  color: #031220;
  font-weight: 800;
  box-shadow: 0 12px 26px rgba(14, 165, 233, 0.22);
}

.nav-links .nav-cta:hover,
.nav-links .nav-cta:focus-visible {
  background: linear-gradient(135deg, #67d4ff 0%, #30b9f3 100%);
  color: #031220;
}

.hero {
  padding: 88px 0 52px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  border: 1px solid rgba(56, 189, 248, 0.18);
  color: #b8ebff;
  font-size: 0.9rem;
  margin-bottom: 22px;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.12);
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.hero h1 span {
  display: block;
  background: linear-gradient(135deg, #ffffff 0%, #b9ddff 45%, #80dbff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  margin: 22px 0 0;
  max-width: 650px;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-strong) 100%);
  color: #041220;
  box-shadow: 0 14px 28px rgba(14, 165, 233, 0.25);
}

.button-secondary {
  background: rgba(15, 23, 42, 0.5);
  border-color: rgba(148, 163, 184, 0.22);
  color: #e9f2ff;
}

.hero-card {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.9), rgba(17, 28, 52, 0.9));
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 26px;
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -40% auto auto -10%;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.26), transparent 70%);
  pointer-events: none;
}

.logo-showcase {
  position: relative;
  z-index: 1;
  border-radius: 24px;
  border: 1px solid rgba(148, 163, 184, 0.14);
  background:
    linear-gradient(180deg, rgba(5, 15, 28, 0.72), rgba(9, 21, 38, 0.92)),
    linear-gradient(135deg, rgba(56, 189, 248, 0.07), rgba(167, 139, 250, 0.07));
  min-height: 320px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 28px;
}

.hero-logo {
  width: min(100%, 340px);
  height: auto;
  margin: 0 auto;
}

.hero-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.section {
  padding: 28px 0 40px;
}

.section-title {
  margin: 0 0 10px;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
}

.section-copy {
  margin: 0 0 28px;
  color: var(--muted);
  max-width: 760px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.86), rgba(12, 18, 34, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.16), rgba(167, 139, 250, 0.16));
  border: 1px solid rgba(148, 163, 184, 0.14);
  display: grid;
  place-items: center;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.faq-list {
  display: grid;
  gap: 16px;
}

details {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.86), rgba(12, 18, 34, 0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 18px 18px 20px;
}

summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  position: relative;
  padding-right: 28px;
}

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

summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: -2px;
  color: var(--brand);
  font-size: 1.3rem;
  line-height: 1;
}

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

details p {
  margin: 14px 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 34px 0 48px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  margin-top: 28px;
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-wrap p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  color: #d7e6fb;
  font-size: 0.95rem;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: white;
  outline: none;
}

.not-found-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 0;
}

.not-found-wrap {
  display: grid;
  gap: 24px;
  justify-items: center;
}

.not-found-brand {
  justify-content: center;
}

.not-found-card {
  width: min(720px, 100%);
  text-align: center;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.9), rgba(17, 28, 52, 0.9));
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 36px 28px;
}

.not-found-code {
  margin: 0 0 10px;
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.08em;
  color: #b8ebff;
}

.not-found-card h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.not-found-text {
  margin: 18px auto 0;
  max-width: 520px;
  color: var(--muted);
  font-size: 1.05rem;
}

.not-found-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

@media (max-width: 960px) {
  .hero-grid,
  .cards {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 56px;
  }

  .nav-wrap {
    align-items: flex-start;
    padding: 14px 0;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(var(--container), calc(100% - 20px));
  }

  .hero-card,
  .card,
  details,
  .not-found-card {
    padding: 18px;
  }

  .hero-actions,
  .not-found-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .nav-links {
    gap: 8px;
  }

  .nav-links a {
    padding: 9px 12px;
  }

  .brand-logo {
    height: 50px;
  }
}