/* Minimal, dependency-free site styles for备案展示站 */
:root {
  --bg: #0b0f1a;
  --panel: rgba(255, 255, 255, 0.06);
  --panel2: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --brand: #6ee7ff;
  --brand2: #a78bfa;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  --radius: 16px;
  --radius2: 22px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC", "Noto Sans CJK SC", "Microsoft Yahei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 10% 10%, rgba(110, 231, 255, 0.20), transparent 60%),
    radial-gradient(900px 600px at 75% 25%, rgba(167, 139, 250, 0.18), transparent 55%),
    radial-gradient(1000px 700px at 40% 100%, rgba(56, 189, 248, 0.12), transparent 60%),
    var(--bg);
  line-height: 1.6;
}

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

.container {
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
}

.muted { color: var(--muted); }

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(11, 15, 26, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand__logo {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(110,231,255,0.95), rgba(167,139,250,0.95));
  color: rgba(11, 15, 26, 0.95);
  font-weight: 800;
}
.brand__name { font-weight: 700; letter-spacing: 0.2px; }
.brand__tagline { font-size: 12px; color: var(--muted); margin-top: 2px; }

.nav { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.nav a { font-size: 14px; color: rgba(255,255,255,0.82); }
.nav__cta {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
}

.hero { padding: 52px 0 28px; }
.hero__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 26px;
  align-items: start;
}
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
}

h1 {
  margin: 0 0 10px 0;
  font-size: clamp(32px, 4.2vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.5px;
}
h2 {
  margin: 0 0 10px 0;
  font-size: 24px;
  letter-spacing: -0.2px;
}

.hero__actions { display: flex; gap: 12px; margin: 18px 0 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.92);
  cursor: pointer;
  user-select: none;
}
.btn:hover { background: rgba(255,255,255,0.10); text-decoration: none; }
.btn--primary {
  border: 1px solid rgba(110,231,255,0.35);
  background: linear-gradient(135deg, rgba(110,231,255,0.24), rgba(167,139,250,0.18));
}
.btn--ghost { background: rgba(255,255,255,0.03); }

.badge {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  color: rgba(255,255,255,0.78);
  font-size: 12px;
}
.hero__badges { display: flex; gap: 10px; flex-wrap: wrap; }

.card, .panel, .feature, .callout, .step {
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
}
.card { padding: 18px; }
.card__title { font-weight: 700; margin-bottom: 10px; }
.card__list { margin: 0; padding-left: 18px; color: rgba(255,255,255,0.82); }
.card__note { margin-top: 10px; font-size: 12px; }

.section { padding: 34px 0; }
.section--alt { background: rgba(255,255,255,0.02); border-top: 1px solid rgba(255,255,255,0.06); border-bottom: 1px solid rgba(255,255,255,0.06); }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 16px;
}
@media (max-width: 920px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid { grid-template-columns: 1fr; } }

.feature { padding: 16px; background: rgba(255,255,255,0.04); }
.feature__title { font-weight: 700; margin-bottom: 6px; }
.feature__desc { color: rgba(255,255,255,0.74); font-size: 14px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 16px; }
@media (max-width: 920px) { .steps { grid-template-columns: 1fr; } }
.step { padding: 16px; background: rgba(255,255,255,0.04); display: flex; gap: 12px; align-items: flex-start; }
.step__num {
  width: 40px; height: 40px;
  border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(110,231,255,0.22), rgba(167,139,250,0.16));
  border: 1px solid rgba(255,255,255,0.14);
  font-weight: 800;
}
.step__title { font-weight: 700; margin-bottom: 4px; }
.step__desc { font-size: 14px; }

.callout { margin-top: 18px; padding: 18px; background: rgba(255,255,255,0.04); }
.callout__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.callout__text { flex: 1 1 280px; min-width: 0; }
.callout__title { font-weight: 800; margin-bottom: 6px; }
.callout__actions { display: flex; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.callout__small { margin-top: 10px; font-size: 12px; }

.qrcode {
  flex: 0 0 auto;
  text-align: center;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.92);
}
.qrcode img {
  display: block;
  width: 200px;
  height: 200px;
  border-radius: 12px;
}
.qrcode__caption { margin-top: 8px; font-size: 12px; color: rgba(11, 15, 26, 0.72); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
@media (max-width: 920px) { .two-col { grid-template-columns: 1fr; } }
.panel { padding: 16px; background: rgba(255,255,255,0.04); }
.panel__title { font-weight: 800; margin-bottom: 8px; }
.panel__list { margin: 0; padding-left: 18px; color: rgba(255,255,255,0.78); }
.panel__links { margin-top: 10px; font-size: 14px; }

.contact {
  margin-top: 14px;
  border-radius: var(--radius2);
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  overflow: hidden;
}
.contact__item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  padding: 12px 14px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.contact__item:first-child { border-top: none; }
.contact__label { color: rgba(255,255,255,0.72); }
.contact__value { color: rgba(255,255,255,0.90); }
@media (max-width: 620px) { .contact__item { grid-template-columns: 1fr; gap: 4px; } }

.footer {
  padding: 22px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(11, 15, 26, 0.72);
}
.footer__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
.footer__brand { font-weight: 800; }
.footer__meta { font-size: 12px; margin-top: 4px; }
.footer__meta a { color: rgba(255,255,255,0.72); }
.footer__meta a:hover { color: rgba(255,255,255,0.92); }
.dot { margin: 0 8px; opacity: 0.6; }

.prose h1 { font-size: 30px; margin-bottom: 8px; }
.prose h2 { margin-top: 22px; }
.prose ul { padding-left: 18px; color: rgba(255,255,255,0.82); }