/* linthu.cn navigation page — no build step, no dependencies. */

:root {
  --bg: #f7f7f5;
  --fg: #16181c;
  --muted: #6b7078;
  --card: #ffffff;
  --border: #e4e4df;
  --accent: #2f6fed;
  --shadow: 0 1px 2px rgba(16, 18, 22, .05), 0 8px 24px -12px rgba(16, 18, 22, .18);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d10;
    --fg: #eceef2;
    --muted: #8b919b;
    --card: #14171c;
    --border: #232830;
    --accent: #6ea1ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 8px 24px -12px rgba(0, 0, 0, .8);
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: clamp(1.5rem, 5vw, 4rem) clamp(1rem, 4vw, 2rem);
  background: var(--bg);
  color: var(--fg);
  font: 400 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI",
        "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

main {
  width: 100%;
  max-width: 44rem;
}

header {
  margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
}

h1 {
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -.02em;
}

h1 span {
  color: var(--muted);
  font-weight: 400;
}

.tagline {
  margin: .4rem 0 0;
  color: var(--muted);
  font-size: .9rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

nav {
  display: grid;
  gap: .75rem;
}

@media (min-width: 34rem) {
  nav { grid-template-columns: 1fr 1fr; }
}

.card {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: .85rem;
  background: var(--card);
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
  transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}

.card:hover,
.card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 1px 2px rgba(16, 18, 22, .06), 0 14px 32px -14px rgba(16, 18, 22, .3);
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: .6rem;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
}

.icon svg {
  width: 1.35rem;
  height: 1.35rem;
}

.body {
  display: flex;
  flex-direction: column;
  gap: .1rem;
  min-width: 0;
}

.name {
  font-weight: 600;
  letter-spacing: -.01em;
}

.host {
  color: var(--accent);
  font-size: .8rem;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  overflow-wrap: anywhere;
}

.desc {
  margin-top: .2rem;
  color: var(--muted);
  font-size: .85rem;
}

footer {
  margin-top: clamp(2rem, 5vw, 3rem);
  color: var(--muted);
  font-size: .78rem;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: .04em;
}

@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
  .card:hover, .card:focus-visible { transform: none; }
}