:root {
  color-scheme: dark;
  --page: #101522;
  --panel: #181f30;
  --panel-border: #29334a;
  --text: #f3f6fc;
  --muted: #a9b4c9;
  --primary: #8ba5ff;
  --primary-strong: #c6d2ff;
  --support: #65d49a;
  --support-strong: #9bf0bd;
  --support-surface: #193126;
  --support-border: #397858;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  margin: 0;
  background: radial-gradient(circle at 50% 0%, #1b2947 0, transparent 42%), var(--page);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: var(--primary-strong); }
a:hover { color: #fff; }

.shell { width: min(100% - 40px, 880px); margin: 0 auto; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 15px;
  font-weight: 760;
  letter-spacing: .01em;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  object-fit: contain;
}

.nav { display: flex; flex-wrap: wrap; gap: 7px 16px; }
.nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
.nav a[aria-current="page"] { color: var(--text); font-weight: 700; }

main { padding: 30px 0 56px; }

.hero, .content-card, .support-card {
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: rgb(24 31 48 / 94%);
  box-shadow: 0 20px 70px rgb(0 0 0 / 20%);
}

.hero { padding: clamp(30px, 7vw, 60px); text-align: center; }
.hero-logo { display: block; width: min(100%, 430px); height: auto; margin: 0 auto 28px; }
.eyebrow { margin: 0 0 12px; color: var(--support-strong); font-size: 13px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.18; }
h1 { max-width: 720px; margin: 0 auto; font-size: clamp(32px, 6vw, 52px); letter-spacing: -.045em; }
.lead { max-width: 650px; margin: 20px auto 0; color: var(--muted); font-size: 18px; }

.content-card { margin-top: 22px; padding: clamp(26px, 5vw, 46px); }
.content-card h2 { margin: 42px 0 12px; font-size: 22px; }
.content-card h2:first-child { margin-top: 0; }
.content-card h3 { margin: 24px 0 8px; font-size: 17px; }
.content-card p, .content-card li { color: var(--muted); }
.content-card strong { color: var(--text); }
.content-card ul { padding-left: 22px; }
.content-card li + li { margin-top: 9px; }

.notice {
  margin: 26px 0 0;
  padding: 16px 18px;
  border: 1px solid var(--support-border);
  border-radius: 14px;
  background: var(--support-surface);
  color: #d6f7e4;
}

.config-value {
  display: inline-block;
  padding: 2px 7px;
  border: 1px dashed #7a8ba8;
  border-radius: 6px;
  color: #dce6fa;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .9em;
}

.support-card {
  margin-top: 22px;
  padding: 26px;
  border-color: var(--support-border);
  background: linear-gradient(135deg, #193126, #17283a);
  text-align: center;
}
.support-card h2 { margin: 0; font-size: 24px; }
.support-card p { margin: 9px auto 18px; color: #d0e7d8; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 12px;
  background: var(--support);
  color: #0c2115;
  font-weight: 850;
  text-decoration: none;
}
.button:hover { background: var(--support-strong); color: #07130c; }

.site-footer {
  padding: 10px 0 34px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}
.site-footer p { margin: 8px 0; }
.site-footer a { color: var(--muted); }

@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 880px); }
  .site-header { align-items: flex-start; flex-direction: column; gap: 14px; }
  .hero, .content-card { border-radius: 18px; }
  .lead { font-size: 16px; }
}