:root {
  --ink: #17202a;
  --muted: #5c6978;
  --line: #d9e1ea;
  --accent: #176b87;
  --accent-strong: #0f4c5c;
  --soft: #eef5f8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f8fbfd 0%, #eef5f8 46%, #fff 100%);
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 clamp(20px, 5vw, 72px);
  background: rgba(248, 251, 253, 0.92);
  border-bottom: 1px solid rgba(217, 225, 234, 0.8);
  backdrop-filter: blur(16px);
}

.brand, nav, .actions { display: flex; align-items: center; }
.brand { gap: 10px; font-weight: 800; }
.brand span {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: #fff;
  background: var(--accent);
  border-radius: 8px;
}

nav { gap: 18px; color: var(--muted); font-size: 15px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 700;
}

.button.primary { color: #fff; background: var(--accent); border-color: var(--accent); }
.button.secondary, .button.small { color: var(--accent-strong); background: #fff; }
.button.small { min-height: 36px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
}

h1, h2, h3, p { letter-spacing: 0; }
h1 { max-width: 860px; margin: 0; font-size: clamp(42px, 7vw, 78px); line-height: 1.02; }
h2 { max-width: 760px; margin: 0 0 28px; font-size: clamp(28px, 4vw, 44px); line-height: 1.12; }
h3 { margin: 0 0 12px; font-size: 20px; }

.lede {
  max-width: 640px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.8;
}

.actions { gap: 12px; margin-top: 32px; flex-wrap: wrap; }

.panel, .grid article, .settings {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(23, 32, 42, 0.08);
}

.panel-title { margin: 0 0 16px; color: var(--accent-strong); font-weight: 800; }
dl { margin: 0; }
dl > div { padding: 18px 0; border-top: 1px solid var(--line); }
dt { font-weight: 800; }
dd { margin: 8px 0 0; color: var(--muted); line-height: 1.7; }

.section { padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 72px); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.grid p, .deploy p { margin: 0; color: var(--muted); line-height: 1.8; }

.deploy {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 28px;
  align-items: start;
  background: var(--soft);
}

.deploy p { margin-top: 18px; }
code { display: block; padding: 12px 0; border-top: 1px solid var(--line); white-space: normal; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 860px) {
  .topbar, footer { align-items: flex-start; flex-direction: column; }
  nav { width: 100%; overflow-x: auto; padding-bottom: 4px; }
  .hero, .deploy, .grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
}