:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel2: #182130;
  --line: #243044;
  --text: #e7eef8;
  --muted: #8b9bb0;
  --accent: #5b9fd4;
  --near: #3dd68c;
  --mid: #f0b429;
  --far: #8b7cf8;
  --danger: #f07178;
  --good: #7fd99a;
  --with: #3dd68c;
  --without: #f07178;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Segoe UI", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--sans); line-height: 1.55; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 20px; border-bottom: 1px solid var(--line); background: #0d131b;
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; flex-direction: column; gap: 2px; }
.brand strong { font-size: 15px; letter-spacing: 0.02em; }
.brand span { font-size: 12px; color: var(--muted); }
.nav { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.nav a.btn, .btn {
  display: inline-block; border: 1px solid var(--line); background: var(--panel2); color: var(--text);
  border-radius: 8px; padding: 8px 12px; font-size: 13px; cursor: pointer; text-decoration: none;
}
.nav a.btn:hover, .btn:hover { border-color: #3d5a7a; text-decoration: none; }
.btn.primary { background: #1c3a56; border-color: #4a7aaa; color: #dff0ff; }
.btn.primary:hover { border-color: #6aa0d0; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 28px 20px 48px; }
.hero { margin-bottom: 28px; }
.hero h1 { margin: 0 0 12px; font-size: 28px; line-height: 1.25; font-weight: 650; }
.hero .lead { font-size: 16px; color: var(--text); max-width: 760px; margin: 0 0 10px; }
.hero .sub { color: var(--muted); font-size: 13px; max-width: 760px; margin: 0 0 18px; }
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 16px; font-weight: 600; }
.card h3 { margin: 16px 0 8px; font-size: 13px; color: var(--muted); font-weight: 600; }
.muted { color: var(--muted); font-size: 12px; line-height: 1.5; }
.pill {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px;
  border: 1px solid var(--line); color: var(--muted); margin-right: 6px;
}
.pill.with { color: var(--with); border-color: #245c44; background: #10271d; }
.pill.without { color: var(--without); border-color: #6b3038; background: #2a1216; }
.pill.public { color: var(--near); border-color: #245c44; background: #10271d; }
.pill.weak { color: var(--mid); border-color: #6b5420; background: #2a220e; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 820px) {
  .grid2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 22px; }
  .top { flex-direction: column; align-items: flex-start; }
}
.compare-frame {
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #0a1018;
}
.compare-frame img {
  display: block; width: 100%; height: auto;
}
.compare-caption {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 10px 14px; border-top: 1px solid var(--line); background: var(--panel2);
  font-size: 12px; color: var(--muted);
}
.bullets { margin: 0; padding-left: 18px; }
.bullets li { margin: 8px 0; font-size: 14px; line-height: 1.55; }
.mono { font-family: var(--mono); font-size: 12px; }
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 12px 0 4px; }
@media (max-width: 820px) { .kpi-row { grid-template-columns: 1fr 1fr; } }
.kpi {
  background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 12px;
}
.kpi .label { font-size: 11px; color: var(--muted); margin-bottom: 4px; }
.kpi .val { font-size: 15px; font-weight: 650; font-variant-numeric: tabular-nums; }
.code {
  background: #0a1018; border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; overflow-x: auto; font-family: var(--mono); font-size: 12px; line-height: 1.6;
  color: #c9d7e8; margin: 10px 0;
}
.footer { margin-top: 28px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.disclaimer {
  border: 1px solid #3a2e18; background: #1a160c; color: #d4c39a;
  border-radius: 10px; padding: 12px 14px; font-size: 12px; margin: 14px 0;
}
.diff-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.diff-table th, .diff-table td {
  text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top;
}
.diff-table th { color: var(--muted); font-weight: 500; font-size: 12px; }
.diff-table td.bad { color: #f5a0a6; }
.diff-table td.good { color: #9ee0b4; }

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.table th { background: var(--panel2); color: var(--muted); font-weight: 600; }
.kpi { background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.kpi .n { font-size: 20px; font-weight: 650; letter-spacing: 0.01em; }
.kpi .l { font-size: 11px; color: var(--muted); margin-top: 4px; }
.code, pre.code {
  background: #0a1018; border: 1px solid var(--line); border-radius: 8px;
  padding: 12px 14px; overflow-x: auto; font-family: var(--mono); font-size: 12px; color: #cfe0f5;
}