:root {
  color-scheme: dark;
  --background: #07071d;
  --surface: rgba(28, 23, 72, 0.82);
  --border: rgba(177, 157, 255, 0.32);
  --primary: #f0edff;
  --secondary: #c4bce9;
  --accent: #a78cff;
  --accent-soft: #d9d0ff;
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--primary);
  background:
    radial-gradient(circle at 20% 5%, rgba(106, 78, 229, 0.35), transparent 34rem),
    radial-gradient(circle at 90% 70%, rgba(59, 88, 214, 0.22), transparent 38rem),
    linear-gradient(155deg, #0d0b31 0%, var(--background) 55%, #090920 100%);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

a { color: var(--accent-soft); }
a:hover { color: #fff; }

.shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 40px;
}

.hero {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 48px 0 36px;
}

.mark {
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  flex: 0 0 auto;
  border: 1px solid var(--border);
  border-radius: 28px;
  color: var(--accent-soft);
  background: rgba(121, 91, 233, 0.18);
  box-shadow: 0 0 48px rgba(132, 102, 255, 0.22);
  font-size: 46px;
}

h1, h2 { line-height: 1.3; }
h1 { margin: 4px 0 8px; font-size: clamp(36px, 8vw, 58px); }
h2 { margin: 38px 0 8px; color: var(--accent-soft); font-size: 21px; }
p { margin: 10px 0; }

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
}

.subtitle, .meta { color: var(--secondary); }

.card {
  padding: clamp(24px, 6vw, 42px);
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
}

.link-grid { display: grid; gap: 14px; }
.link-grid a {
  display: grid;
  gap: 4px;
  padding: 20px;
  border: 1px solid rgba(196, 180, 255, 0.18);
  border-radius: 18px;
  color: var(--primary);
  background: rgba(255, 255, 255, 0.035);
  text-decoration: none;
}
.link-grid a:hover { border-color: var(--accent); background: rgba(152, 122, 255, 0.10); }
.link-grid span { font-size: 20px; font-weight: 700; }
.link-grid small { color: var(--secondary); font-size: 14px; }

.document nav { margin-bottom: 50px; }
.document nav a { text-decoration: none; }
.document header { margin-bottom: 30px; }
.document h1 { font-size: clamp(34px, 7vw, 48px); }
.contact { font-size: 19px; font-weight: 700; }

footer {
  padding: 34px 4px 0;
  color: var(--secondary);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 560px) {
  .shell { padding-top: 24px; }
  .hero { align-items: flex-start; padding-top: 32px; }
  .mark { width: 68px; height: 68px; border-radius: 22px; font-size: 36px; }
  .card { border-radius: 22px; }
}

.language-nav, .page-nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.document .language-nav { margin-bottom: 24px; font-size: 14px; }
.document .page-nav { margin-bottom: 30px; }
nav a { padding: 5px 0; }
nav [aria-current="page"] { color: var(--primary); text-decoration: underline; text-underline-offset: 5px; }
.card p, h1, h2 { overflow-wrap: anywhere; }
.card section:first-of-type h2 { margin-top: 24px; }
a:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 4px; }