:root {
  --bg: #ffffff; --fg: #1b2430; --muted: #5b6b7a;
  --accent: #2563eb; --accent-ink: #ffffff;
  --line: #e5e9f0; --card: #f7f9fc;
  --ok: #0f9d58; --warn: #b7791f; --stop: #8a94a2;
  --maxw: 860px; --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1720; --fg: #e5e9f0; --muted: #9aa8b6;
    --line: #24303d; --card: #16212c; --accent: #5b9bff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.8 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
}
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.8rem; line-height: 1.35; margin: .8em 0 .5em; }
h2 { font-size: 1.35rem; margin: 1.8em 0 .6em; padding-bottom: .2em; border-bottom: 2px solid var(--line); }
h3 { font-size: 1.1rem; margin: 1.4em 0 .4em; }
img { max-width: 100%; height: auto; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }
code { background: var(--card); padding: .1em .35em; border-radius: 4px; font-size: .9em; }
pre { background: var(--card); padding: 14px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; }
blockquote { margin: 1em 0; padding: .4em 1em; border-left: 3px solid var(--accent); color: var(--muted); }
.muted { color: var(--muted); }

.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 8px; top: 8px; background: var(--accent); color: #fff; padding: 8px 12px; border-radius: 6px; z-index: 10; }

/* header / footer */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--fg); font-size: 1.05rem; }
.site-nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: .93rem; }
.site-footer { border-top: 1px solid var(--line); margin-top: 4em; padding: 2em 0; color: var(--muted); font-size: .88rem; }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: .7em; }

/* hero */
.hero { padding: 2.4em 0 1.4em; }
.hero__eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .74rem; color: var(--muted); margin: 0 0 .6em; }
.hero h1 { font-size: 2rem; margin: 0 0 .4em; }
.hero__lead { color: var(--muted); font-size: 1.03rem; max-width: 42em; }
.hero__cta { margin-top: 1.4em; display: flex; gap: 10px; flex-wrap: wrap; }

/* buttons */
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); padding: .6em 1.15em; border-radius: 8px; font-weight: 600; font-size: .95rem; }
.btn:hover { text-decoration: none; opacity: .92; }
.btn--ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }

/* home blocks */
.block { margin: 2.6em 0; }
.block__head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; border-bottom: 2px solid var(--line); margin-bottom: 1em; }
.block__head h2 { border: 0; margin: 0 0 .3em; }
.block__head a { font-size: .88rem; white-space: nowrap; }

/* cards */
.cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.cards--2 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .cards--2 { grid-template-columns: 1fr 1fr; } }
.card { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.card h3 { margin: 0 0 .3em; }
.card p { margin: .3em 0; color: var(--muted); font-size: .93rem; }
.card__meta { font-size: .82rem; }

/* service card */
.service__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.service__head h3 { margin: 0; }
.service__head .badge { margin-top: .2em; }
.service__lead { color: var(--fg) !important; font-weight: 600; }
.service__links { font-size: .85rem; }
.count { display: inline-block; margin-left: .5em; font-size: .8rem; color: var(--muted); font-weight: 400; }

/* badges */
.badge { display: inline-block; padding: .12em .6em; border-radius: 999px; font-size: .74rem; font-weight: 600; white-space: nowrap; border: 1px solid transparent; }
.badge--running { background: rgba(15,157,88,.14); color: var(--ok); }
.badge--building { background: rgba(37,99,235,.14); color: var(--accent); }
.badge--planning { background: rgba(183,121,31,.16); color: var(--warn); }
.badge--paused, .badge--closed { background: rgba(138,148,162,.18); color: var(--stop); }

/* tags */
.tags { display: flex; gap: 6px; flex-wrap: wrap; margin: .6em 0 0; }
.tag { font-size: .76rem; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: .1em .5em; color: var(--muted); }

/* stat grid */
.statgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 1.2em 0; }
.stat { text-align: center; padding: 14px 8px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.stat__num { display: block; font-size: 1.3rem; font-weight: 700; }
.stat small { color: var(--muted); font-size: .8rem; }

/* tables */
.table-wrap { overflow-x: auto; margin: 1.4em 0; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
thead th { background: var(--card); }

/* post */
.crumb, .post__meta { color: var(--muted); font-size: .84rem; }
.post__body { margin-top: 1.6em; }
.post__body h2:first-child { margin-top: .4em; }
.page { margin-top: 1em; }

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .statgrid { grid-template-columns: 1fr; }
}

/* knock cards (アイコン／サムネイル表示) */
.cards--knocks { grid-template-columns: repeat(2, 1fr); gap: 14px; }
@media (min-width: 720px) { .cards--knocks { grid-template-columns: repeat(3, 1fr); } }
.knock-card { padding: 0; overflow: hidden; }
.knock-card__link, .knock-card__link:hover { display: block; color: inherit; text-decoration: none; }
.knock-card__media { position: relative; aspect-ratio: 4 / 3; background: var(--bg); border-bottom: 1px solid var(--line); }
.knock-card__thumb { width: 100%; height: 100%; object-fit: cover; display: block; }
.knock-card__thumb--placeholder { display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--accent), var(--card)); }
.knock-card__thumb--placeholder span { font-size: 2rem; font-weight: 700; color: var(--accent-ink); opacity: .85; }
.knock-card__no { position: absolute; top: 8px; left: 8px; background: rgba(0,0,0,.55); color: #fff; font-size: .72rem; font-weight: 600; padding: .15em .55em; border-radius: 999px; }
.knock-card__body { padding: 12px 14px 14px; }
.knock-card__body h3 { font-size: .98rem; margin: 0 0 .3em; color: var(--fg); }
.knock-card__body p { margin: 0 0 .6em; font-size: .85rem; color: var(--muted); }
.knock-card__link:hover .knock-card__body h3 { color: var(--accent); }
.badge--knock-done, .badge--knock-promoted { background: rgba(15,157,88,.14); color: var(--ok); }
.badge--knock-wip, .badge--knock-review { background: rgba(37,99,235,.14); color: var(--accent); }
.badge--knock-spec { background: rgba(183,121,31,.16); color: var(--warn); }
.badge--knock-todo, .badge--knock-na { background: rgba(138,148,162,.18); color: var(--stop); }

@media (max-width: 380px) {
  .cards--knocks { gap: 10px; }
  .knock-card__body { padding: 10px 10px 12px; }
}