:root {
  --bg: #07110f;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --text: #f4fff9;
  --muted: #b7c9c1;
  --line: rgba(255, 255, 255, 0.16);
  --accent: #36f2a3;
  --accent-2: #7dd3fc;
  --dark: #0b1714;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background:
    radial-gradient(circle at 16% 12%, rgba(54, 242, 163, 0.25), transparent 30%),
    radial-gradient(circle at 84% 8%, rgba(125, 211, 252, 0.2), transparent 28%),
    linear-gradient(135deg, #07110f 0%, #0b1d19 48%, #06100e 100%);
}

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

.site {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
}

.logo-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #03110b;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 16px 40px rgba(54, 242, 163, 0.28);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  padding: 54px 0 34px;
}

.hero-card,
.metric-card,
.section,
.page-hero {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.045));
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
}

.hero-card {
  border-radius: 34px;
  padding: 46px;
}

.eyebrow,
.label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

h1 {
  margin: 18px 0;
  font-size: clamp(38px, 5vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  color: #03110b;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.ghost {
  color: var(--muted);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
}

.metric-card {
  display: grid;
  gap: 16px;
  align-content: stretch;
  border-radius: 34px;
  padding: 24px;
}

.metric {
  padding: 24px;
  border-radius: 24px;
  background: rgba(5, 16, 13, 0.58);
  border: 1px solid var(--line);
}

.metric strong {
  display: block;
  margin-bottom: 8px;
  font-size: 26px;
}

.metric span {
  color: var(--muted);
  line-height: 1.7;
}

.section {
  margin: 26px 0;
  padding: 34px;
  border-radius: 30px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: end;
  margin-bottom: 24px;
}

h2 {
  margin: 0;
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.03em;
}

.section-head p,
.section > p {
  color: var(--muted);
  line-height: 1.8;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.item {
  min-height: 180px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.055);
}

.item b {
  display: block;
  margin-bottom: 14px;
  color: var(--accent);
}

.item h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.item p,
.item li {
  color: var(--muted);
  line-height: 1.78;
}

.item ul {
  margin: 0;
  padding-left: 18px;
}

.engines {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.engines span,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 15px;
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
}

.page-hero {
  margin: 36px 0 26px;
  padding: 42px;
  border-radius: 34px;
}

.page-hero h1 {
  font-size: clamp(34px, 4vw, 54px);
}

.content {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  margin-bottom: 36px;
}

.article {
  padding: 34px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
}

.article p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.article h2 {
  margin-top: 30px;
  margin-bottom: 14px;
  font-size: 28px;
}

.side {
  display: grid;
  gap: 14px;
  align-content: start;
}

.side a,
.side div {
  padding: 18px;
  border-radius: 20px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--line);
}

.side strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

footer {
  padding: 34px 0 44px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 860px) {
  .site {
    width: min(100% - 28px, 1180px);
  }

  .topbar,
  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
  }

  .hero,
  .content,
  .grid {
    grid-template-columns: 1fr;
  }

  .hero-card,
  .page-hero,
  .section,
  .article {
    padding: 26px;
    border-radius: 26px;
  }
}