/* 「我在哪里」：沿用科研院目录页的纸色与衬线体，只做这一页需要的东西。 */

:root {
  --ink: #1a1410;
  --muted: #6e6358;
  --line: #cfc4b2;
  --accent: #8b2e2e;
  --card: #fffdf8;
  --glow: rgba(26, 20, 16, 0.09);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  background:
    radial-gradient(1200px 600px at 10% -10%, #f9f4ea 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #e7dcc8 0%, transparent 50%),
    linear-gradient(180deg, #f3ece0 0%, #e4d9c6 100%);
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2.5rem) clamp(1rem, 4vw, 2.25rem) 3rem;
}

.topbar {
  margin-bottom: clamp(1.5rem, 5vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.back {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
}

.back:hover { border-color: var(--accent); color: var(--accent); }

.head { border-bottom: 1px solid var(--line); padding-bottom: 1.5rem; }

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 5.4vw, 2.4rem);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.lead {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.card {
  margin-top: 2rem;
  padding: clamp(1.25rem, 4vw, 1.75rem);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 14px 32px var(--glow);
}

button {
  display: block;
  width: 100%;
  padding: 0.85rem 1.2rem;
  font: inherit;
  font-size: 1.02rem;
  letter-spacing: 0.08em;
  color: #fffaf3;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.05s;
}

button:hover:not(:disabled) { opacity: 0.9; }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.55; cursor: default; }

.result {
  margin: 1.5rem 0 0;
  border-top: 1px solid var(--line);
}

.row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.7rem 0.15rem;
  border-bottom: 1px solid var(--line);
}

.row dt {
  flex: none;
  width: 4.5em;
  color: var(--muted);
  font-size: 0.88rem;
  letter-spacing: 0.14em;
}

.row dd {
  margin: 0;
  font-size: 1.12rem;
  letter-spacing: 0.03em;
  word-break: break-all;
}

.row dd.missing {
  color: var(--muted);
  font-style: italic;
  font-size: 0.98rem;
  letter-spacing: 0.06em;
}

.ip {
  margin: 1rem 0 0;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
}

.note {
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.note.bad { color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}