:root {
  --bg: #f6f7f9; --card: #fff; --ink: #14181f; --muted: #5b6575; --line: #e3e7ee;
  --accent: #2557d6; --accent-ink: #fff;
  --ok: #157f4b; --ok-bg: #e3f5ec; --ok-line: #9fd8bb;
  --bad: #a12f2f; --bad-bg: #fbe8e8; --bad-line: #efb3b3;
  --warn: #9a6700; --warn-bg: #fff3d1; --unk: #4a5565; --unk-bg: #eaedf2;
  --radius-lg: 16px; --radius-sm: 8px;
  --space-section: clamp(24px, 4vw, 40px);
  --text-hero: clamp(28px, 2rem + 2vw, 44px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1218; --card: #171c25; --ink: #e8ecf3; --muted: #9aa6b8; --line: #272e3b;
    --accent: #7aa2ff; --accent-ink: #0b1020;
    --ok: #5fd49a; --ok-bg: #11291c; --ok-line: #24583b;
    --bad: #ff9a9a; --bad-bg: #2f1414; --bad-line: #6a2a2a;
    --warn: #f0c14b; --warn-bg: #352a0c; --unk: #a9b4c6; --unk-bg: #232a36;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* language: both texts are in the DOM, one is hidden */
html[data-lang="en"] .l-ja, html[data-lang="ja"] .l-en { display: none; }

.top, main { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-top: 20px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: var(--card); }
.seg button { font: inherit; font-size: 14px; color: var(--ink); background: none; border: 0; padding: 6px 12px; min-height: 36px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

.hero { padding: var(--space-section) 0 20px; }
.hero h1 { margin: 6px 0 2px; font-size: var(--text-hero); line-height: 1.1; letter-spacing: -0.02em; word-break: break-word; }
.repo { margin: 0 0 14px; font-size: 14px; }
.lead { margin: 0; font-size: 18px; max-width: 60ch; }
.note { margin: 12px 0 0; padding: 8px 12px; border-radius: var(--radius-sm); background: var(--warn-bg); color: var(--warn); font-size: 14px; }
.badges { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.b { font-size: 12px; padding: 2px 10px; border-radius: 999px; background: var(--unk-bg); color: var(--unk); white-space: nowrap; }
.b.off { background: var(--accent); color: var(--accent-ink); }
.b.Active { background: var(--ok-bg); color: var(--ok); }
.b.Stale { background: var(--warn-bg); color: var(--warn); }
.b.Inactive { background: var(--bad-bg); color: var(--bad); }

.stats { display: flex; flex-wrap: wrap; gap: 4px 24px; margin: 20px 0 0; padding: 12px 0 0; border-top: 1px solid var(--line); }
.stats div { display: flex; gap: 6px; align-items: baseline; }
.stats dt { color: var(--muted); font-size: 13px; }
.stats dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }

/* the point of the page: can vs cannot, side by side */
.verdict { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.panel { background: var(--card); border: 1px solid var(--line); border-top-width: 4px; border-radius: var(--radius-lg); padding: 18px 20px 20px; }
.panel.can { border-top-color: var(--ok); }
.panel.cannot { border-top-color: var(--bad); }
.panel h2 { display: flex; align-items: center; gap: 10px; margin: 0 0 12px; font-size: 18px; }
.mark { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; font-size: 15px; font-weight: 700; flex: none; }
.can .mark { background: var(--ok-bg); color: var(--ok); }
.cannot .mark { background: var(--bad-bg); color: var(--bad); }
.n { margin-left: auto; font-size: 13px; color: var(--muted); font-weight: 500; font-variant-numeric: tabular-nums; }
.items { list-style: none; margin: 0; padding: 0; }
.items li { position: relative; padding: 9px 0 9px 26px; border-top: 1px solid var(--line); }
.items li:first-child { border-top: 0; }
.items li::before { position: absolute; left: 2px; top: 9px; font-weight: 700; }
.items li.c::before { content: "✓"; color: var(--ok); }
.items li.x::before { content: "✕"; color: var(--bad); }
.items li.r::before { content: "•"; color: var(--muted); }
code { font: 0.88em/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 1px 5px; border-radius: 4px; background: var(--unk-bg); color: var(--ink); overflow-wrap: anywhere; }
.empty { margin: 0; color: var(--muted); font-style: italic; }

.req { margin-top: 16px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 18px 20px; }
.req h2 { margin: 0 0 8px; font-size: 16px; }

.src { margin: var(--space-section) 0 48px; color: var(--muted); font-size: 13px; }
.src p { margin: 0 0 6px; }
.src ul { margin: 0; padding-left: 18px; word-break: break-all; }

@media (max-width: 720px) {
  .verdict { grid-template-columns: 1fr; }
  .lead { font-size: 16px; }
}