/* ちよすけラボ 共通スタイル v2 — modern: deep-green hero band, choropleth art, soft cards */
:root{
  --bg:#f6f8f4;--surface:#ffffff;--ink:#152420;--muted:#5d6f66;--line:#e2e9e1;
  --accent:#2f9e4f;--accent-2:#0e7c86;--accent-ink:#fff;--soft:#e9f5e4;
  --deep:#0a2b20;--deep-2:#0f4a34;--deep-ink:#eef7ee;--deep-muted:#a9c8b4;
  --shadow:0 18px 40px -18px rgba(10,43,32,.25);--radius:20px;
  --f-body:"Zen Kaku Gothic New","Hiragino Sans","Yu Gothic UI","Meiryo",sans-serif;
  --f-num:"IBM Plex Mono",ui-monospace,Menlo,monospace}
@media (prefers-color-scheme:dark){:root{
  --bg:#0e1512;--surface:#17211c;--ink:#e6eee8;--muted:#9db0a4;--line:#2a3831;
  --accent:#7cc46a;--accent-2:#4fb3bd;--accent-ink:#0e150f;--soft:#1d2c20;
  --deep:#071f16;--deep-2:#0c3524;--deep-ink:#eef7ee;--deep-muted:#9dc0aa;color-scheme:dark}}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--accent-2)}
.wrap{max-width:1080px;margin:0 auto;padding-inline:22px}

/* header */
header.site{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:13px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:19px;color:var(--ink);text-decoration:none;letter-spacing:.04em}
.logo img{width:30px;height:30px}
header.site nav{display:flex;gap:20px;font-size:14px;font-weight:700}
header.site nav a{color:var(--muted);text-decoration:none}
header.site nav a:hover{color:var(--accent)}

/* hero */
.hero-band{background:radial-gradient(1100px 480px at 85% -10%,rgba(66,190,120,.35),transparent 60%),linear-gradient(135deg,var(--deep) 0%,var(--deep-2) 58%,#116149 100%);color:var(--deep-ink);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding-block:64px 72px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--deep-ink);background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.25);border-radius:99px;padding:4px 14px;margin-bottom:20px}
.hero-copy h1{font-size:clamp(32px,4.6vw,50px);font-weight:900;line-height:1.32;margin:0 0 16px;letter-spacing:.01em;text-wrap:balance}
.hero-copy p{color:var(--deep-muted);max-width:34em;margin:0 0 22px;font-size:16.5px}
.promise{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0 0 28px}
.promise li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:var(--deep-ink);border-radius:99px;padding:4px 14px;font-size:14px;font-weight:700}
.promise li::before{content:"✓ ";color:#8fe3a8}
.cta{display:inline-flex;align-items:center;gap:8px;background:#fff;color:#0a2b20;font-weight:900;font-size:16px;text-decoration:none;border-radius:99px;padding:13px 28px;box-shadow:0 14px 30px -12px rgba(0,0,0,.45);transition:transform .15s,box-shadow .15s}
.cta:hover{transform:translateY(-2px)}
.hero-art{position:relative;margin:0;justify-self:center;width:min(430px,100%)}
.hero-art img{width:100%;height:auto;display:block;filter:drop-shadow(0 24px 44px rgba(0,0,0,.4))}
.chip{position:absolute;background:var(--surface);color:var(--ink);border-radius:14px;box-shadow:var(--shadow);padding:8px 16px;font-size:13.5px;font-weight:700;white-space:nowrap}
.chip strong{font-size:19px;font-weight:900;color:var(--accent)}
.chip-a{top:6%;left:-8%}
.chip-b{bottom:8%;right:-6%}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:-38px 0 8px;position:relative;z-index:5}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 10px 14px;text-align:center}
.stat strong{display:block;font-size:clamp(24px,3vw,32px);font-weight:900;line-height:1.15;color:var(--ink)}
.stat span{font-size:13px;color:var(--muted);font-weight:700}

/* sections & tool cards */
.sec-title{font-size:24px;font-weight:900;margin:52px 0 18px;display:flex;align-items:center;gap:12px}
.sec-title::before{content:"";width:6px;height:26px;border-radius:3px;background:linear-gradient(180deg,var(--accent),var(--accent-2))}
.sec-title{scroll-margin-top:90px}
.tools{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:stretch}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit;transition:transform .18s,box-shadow .18s,border-color .18s}
a.tool:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow)}
.tool.featured{grid-column:1/-1;flex-direction:row;gap:26px;padding:0;overflow:hidden}
.tool-art{flex:0 0 42%;background:linear-gradient(150deg,var(--deep-2),var(--deep));display:flex;align-items:center;justify-content:center;padding:26px}
.tool-art img{width:100%;max-width:330px;height:auto;display:block}
.tool-body{display:flex;flex-direction:column;gap:8px;padding:26px 26px 26px 0;flex:1}
.tool .tag{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--accent)}
.tool h3{margin:0;font-size:22px;font-weight:900}
.tool p{margin:0;color:var(--muted);font-size:14.5px}
.tool .go{margin-top:auto;font-weight:900;color:var(--accent-2);font-size:15px}
.tool.soon{opacity:.65;border-style:dashed;justify-content:center}

/* prose pages */
.prose{max-width:760px}
.prose h1{font-size:30px;font-weight:900;margin:44px 0 10px}
.prose h2{font-size:20px;font-weight:900;margin:36px 0 10px}
.prose p,.prose li{color:var(--ink)}
.prose .lead{color:var(--muted)}
main.wrap.prose{padding-bottom:10px}
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:0 10px 26px -20px rgba(10,43,32,.25)}
.box.secure{display:flex;gap:16px;align-items:flex-start;border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}
.secure-ic{font-size:26px;line-height:1.4}
table{border-collapse:separate;border-spacing:0;width:100%;font-size:14.5px;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
th,td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
tr:last-child th,tr:last-child td{border-bottom:none}
th{background:var(--soft);white-space:nowrap;font-weight:700}

/* footer */
footer.site{background:var(--deep);color:var(--deep-muted);margin-top:72px;padding-block:30px;font-size:13.5px}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}
footer.site a{color:var(--deep-muted);text-decoration:none}
footer.site a:hover{color:#fff}

/* 広告枠（記事ページ用・審査後に有効化） */
.ad-slot{min-height:0}

@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr;padding-block:44px 56px;gap:30px}
  .hero-art{width:min(340px,88%)}
  .chip-a{left:-2%}.chip-b{right:-2%}
  .stats{grid-template-columns:repeat(2,1fr);margin-top:-30px}
  .tools{grid-template-columns:1fr}
  .tool.featured{flex-direction:column;padding:0}
  .tool-art{flex:none;padding:20px}
  .tool-body{padding:0 22px 24px}
}
@media (max-width:600px){header.site nav{display:none}}