:root {
  --bg: #0b1020;
  --panel: #101832;
  --panel-2: #0f1730;
  --text: #eaf0ff;
  --muted: #aeb9de;
  --primary: #7db2ff;
  --accent: #62efc4;
  --line: #263567;
  --shadow: 0 14px 28px rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background:
    radial-gradient(1200px 700px at 95% -10%, rgba(98, 239, 196, 0.16), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(125, 178, 255, 0.2), transparent 65%),
    var(--bg);
}

.container {
  width: min(1080px, 92%);
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(8px);
  background: rgba(11, 16, 32, 0.76);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}

.brand {
  font-weight: 700;
  color: #f4f7ff;
  text-decoration: none;
}

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

.links a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  padding: 6px 10px;
  border-radius: 10px;
  transition: 0.2s ease;
}

.links a:hover,
.links a.active {
  color: var(--text);
  border-color: var(--line);
  background: rgba(125, 178, 255, 0.14);
}

.hero {
  padding: 64px 0 34px;
  border-bottom: 1px solid var(--line);
}

.badge {
  display: inline-block;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--accent);
  background: rgba(98, 239, 196, 0.07);
  padding: 6px 12px;
  font-size: 13px;
}

h1 {
  margin: 12px 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.2;
}

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

.domain-chip {
  margin-top: 18px;
  display: inline-flex;
  gap: 10px;
  align-items: center;
  border: 1px solid rgba(125, 178, 255, 0.45);
  border-radius: 10px;
  padding: 10px 14px;
  background: rgba(125, 178, 255, 0.12);
}

.grid {
  padding: 28px 0 56px;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 35%), var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.card h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.card p,
.card li {
  margin: 0;
  color: var(--muted);
}

.card ul {
  margin: 10px 0 0 18px;
  padding: 0;
}

.page {
  padding: 30px 0 56px;
}

.section {
  margin-bottom: 18px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.section h2 {
  margin: 0 0 10px;
}

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 20px 0 38px;
  font-size: 14px;
}

.footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: center;
  justify-content: space-between;
}

.footer a {
  color: var(--primary);
  text-decoration: none;
}

.tag-row {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--accent);
  background: rgba(98, 239, 196, 0.08);
  border: 1px solid var(--line);
}

.term-list {
  display: grid;
  gap: 10px;
}

.term-list div {
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px dashed var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.meta {
  margin-top: 8px;
  font-size: 13px;
  color: #93a5dc;
}

.section a {
  color: var(--primary);
  text-decoration: none;
}

.section a:hover {
  text-decoration: underline;
}

.post-list {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.post-item {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  text-decoration: none;
}

.post-item strong {
  color: #edf2ff;
  display: block;
}

.post-item span {
  color: var(--muted);
  font-size: 14px;
}

.source-box {
  border-color: rgba(98, 239, 196, 0.5);
  background: linear-gradient(180deg, rgba(98, 239, 196, 0.07), rgba(15, 23, 48, 0.95));
}

.source-box h2 {
  color: #d9ffee;
}

@media (max-width: 700px) {
  .nav-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 42px;
  }
}