:root {
  --bg-start: #edf7fb;
  --bg-middle: #f8fafc;
  --bg-end: #fff4e6;
  --text: #0f172a;
  --muted: #64748b;
  --panel: rgba(255, 255, 255, 0.94);
  --border: rgba(15, 23, 42, 0.1);
  --primary: #0ea5e9;
  --secondary: #14b8a6;
  --accent: #f97316;
  --shadow: rgba(15, 23, 42, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  background:
    linear-gradient(135deg, var(--bg-start) 0%, var(--bg-middle) 52%, var(--bg-end) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(120deg, rgba(14, 165, 233, 0.12), transparent 36%),
    linear-gradient(300deg, rgba(249, 115, 22, 0.12), transparent 34%);
}

.page-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 520px;
}

.profile-panel {
  width: 100%;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 60px var(--shadow);
}

.brand-strip {
  width: 86px;
  height: 5px;
  margin: 0 auto 24px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
}

.profile-header {
  text-align: center;
}

.profile-logo {
  display: block;
  width: 148px;
  max-width: 60vw;
  height: auto;
  margin: 0 auto 18px;
  border-radius: 8px;
  background: #020617;
  box-shadow: 0 14px 34px rgba(2, 6, 23, 0.2);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 2.1rem;
  line-height: 1.12;
}

.description {
  max-width: 390px;
  margin: 12px auto 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.link-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.link-button {
  min-height: 58px;
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 18px;
  color: var(--text);
  background: #ffffff;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.demo-menu {
  margin: 0;
}

.demo-summary {
  cursor: pointer;
  list-style: none;
}

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

.link-button:hover {
  transform: translateY(-2px);
  border-color: rgba(14, 165, 233, 0.45);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12);
}

.link-button:focus-visible {
  outline: 3px solid rgba(14, 165, 233, 0.32);
  outline-offset: 3px;
}

.link-button-primary {
  border-color: transparent;
  color: #ffffff;
  background: linear-gradient(135deg, #0284c7, var(--secondary));
}

.link-icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--primary);
  background: rgba(14, 165, 233, 0.12);
  font-size: 0.74rem;
  font-weight: 800;
}

.link-button-primary .link-icon {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.2);
}

.link-arrow {
  font-size: 1.25rem;
  font-weight: 800;
  opacity: 0.72;
  transition: transform 180ms ease;
}

.demo-menu[open] .demo-summary .link-arrow {
  transform: rotate(90deg);
}

.demo-links {
  display: grid;
  gap: 10px;
  margin: 10px 0 0 54px;
}

.demo-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid rgba(14, 165, 233, 0.18);
  border-radius: 14px;
  color: #075985;
  background: rgba(14, 165, 233, 0.08);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 180ms ease, transform 180ms ease;
}

.demo-link:hover {
  transform: translateY(-1px);
  background: rgba(14, 165, 233, 0.14);
}

.demo-link:focus-visible {
  outline: 3px solid rgba(14, 165, 233, 0.28);
  outline-offset: 3px;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

.social-links a {
  color: #0369a1;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.social-links a:hover,
.social-links a:focus-visible {
  color: var(--accent);
  text-decoration: underline;
}

.site-footer {
  margin-top: 22px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 480px) {
  body {
    align-items: flex-start;
    padding: 18px 12px;
  }

  .profile-panel {
    padding: 22px 16px;
  }

  .profile-logo {
    width: 126px;
  }

  h1 {
    font-size: 1.85rem;
  }

  .description {
    font-size: 0.96rem;
  }

  .link-button {
    grid-template-columns: 40px 1fr auto;
    gap: 12px;
    min-height: 56px;
    padding: 10px 12px;
    border-radius: 16px;
  }

  .link-icon {
    width: 38px;
    height: 38px;
  }

  .demo-links {
    margin-left: 50px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .link-button:hover {
    transform: none;
  }
}