:root {
  --bg: #0b1220;
  --bg-soft: #0f1930;
  --card: #111c33;
  --card-border: #1f2f4f;
  --text: #e8eef8;
  --muted: #93a5c0;
  --accent: #38bdf8;
  --accent-2: #34d399;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  font-family: var(--sans);
  background: radial-gradient(1200px 600px at 50% -10%, #16294d 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}
.site-header {
  max-width: 1020px;
  margin: 0 auto;
  padding: 1.4rem 1.25rem 0.4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand-mark { border-radius: 9px; }
.brand h1 { font-size: 1.35rem; margin: 0; letter-spacing: -0.01em; }
.brand p { margin: 0.1rem 0 0; color: var(--muted); font-size: 0.9rem; }
main { max-width: 1020px; margin: 0 auto; padding: 1rem 1.25rem 2.5rem; }
.card {
  background: linear-gradient(180deg, var(--card) 0%, var(--bg-soft) 100%);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.25rem 1.4rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.card h2 { margin: 0 0 0.9rem; font-size: 1.02rem; letter-spacing: 0.01em; }
.card-note { color: var(--muted); font-size: 0.85rem; margin: 0.8rem 0 0; }
.hero { text-align: center; padding: 2rem 1.4rem 1.7rem; margin-bottom: 1.1rem; }
.hero-label { color: var(--muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.14em; }
.hero-ip {
  font-family: var(--mono);
  font-size: clamp(1.7rem, 6.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0.55rem 0 0.35rem;
  word-break: break-all;
  color: #fff;
}
.hero-sub { color: var(--muted); font-size: 1rem; min-height: 1.4em; }
.hero-actions { margin-top: 1.1rem; display: flex; justify-content: center; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }
.rows { margin: 0; }
.rows .row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.48rem 0;
  border-bottom: 1px solid rgba(147, 165, 192, 0.12);
}
.rows .row:last-child { border-bottom: none; }
.rows dt { color: var(--muted); font-size: 0.92rem; flex-shrink: 0; }
.rows dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.9rem;
  text-align: right;
  word-break: break-word;
}
.rows .empty { color: var(--muted); font-size: 0.9rem; padding: 0.4rem 0; }
.ua-block { margin-top: 1rem; background: rgba(0,0,0,0.28); border: 1px solid rgba(147,165,192,0.15); border-radius: 10px; padding: 0.8rem 0.9rem; }
.ua-head { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.45rem; }
.ua-text { font-family: var(--mono); font-size: 0.82rem; line-height: 1.5; margin: 0; word-break: break-all; }
.btn {
  font: inherit;
  font-size: 0.92rem;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: #182747;
  color: var(--text);
  padding: 0.55rem 1rem;
  cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #06263b; font-weight: 600; }
.btn-primary:hover { background: #56c8fa; }
.btn-small { padding: 0.28rem 0.7rem; font-size: 0.8rem; }
.badge {
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--accent-2);
  color: var(--accent-2);
}
.badge-dim { border-color: var(--card-border); color: var(--muted); }
.actions-bar { margin-top: 1.1rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.actions-bar h2 { margin-bottom: 0.25rem; }
.actions-bar p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.actions-buttons { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.site-footer { margin-top: 1.6rem; color: var(--muted); font-size: 0.9rem; line-height: 1.55; text-align: center; padding: 0 0.5rem; }
.site-footer strong { color: var(--text); }
.checked-at { font-family: var(--mono); font-size: 0.82rem; }
.curl-tip code { font-family: var(--mono); background: rgba(0,0,0,0.3); padding: 0.15rem 0.45rem; border-radius: 6px; font-size: 0.82rem; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%) translateY(20px);
  background: var(--accent-2);
  color: #052e21;
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }