/* くらしの計算ツール - shared styles */
:root{
  --ink:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --accent:#0e7490;
  --accent-dark:#0a5a70;
  --bg:#ffffff;
  --soft:#f3f4f6;
}
*{box-sizing:border-box;}
body{
  margin:0;
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,"Noto Sans JP",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
}
.wrap{max-width:880px;margin:0 auto;padding:0 16px;}
.site-header{border-bottom:1px solid var(--line);background:#fff;}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding-top:12px;padding-bottom:12px;}
.logo{font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none;}
.nav{display:flex;gap:4px;flex-wrap:wrap;}
.nav a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:8px;font-size:.95rem;}
.nav a:hover{background:var(--soft);color:var(--ink);}
.nav a.active{color:var(--accent);font-weight:700;}
.hero{padding:40px 0 24px;text-align:center;}
.hero h1{font-size:1.7rem;margin:0 0 12px;}
.hero p{color:var(--muted);margin:0;}
h1{font-size:1.5rem;margin:28px 0 8px;}
.lead{color:var(--muted);margin:0 0 20px;}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:28px 0;}
.card{display:block;border:1px solid var(--line);border-radius:12px;padding:20px;text-decoration:none;color:var(--ink);background:#fff;}
.card:hover{border-color:var(--accent);}
.card h2{font-size:1.1rem;margin:0 0 8px;}
.card p{color:var(--muted);font-size:.93rem;margin:0 0 12px;}
.card-link{color:var(--accent);font-weight:700;font-size:.95rem;}
.calc{display:grid;grid-template-columns:1fr;gap:20px;margin:8px 0 28px;}
@media(min-width:720px){.calc{grid-template-columns:340px 1fr;}}
.form{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff;}
.form label{display:block;margin-bottom:14px;font-size:.93rem;}
.form input{width:100%;margin-top:6px;padding:10px 12px;font-size:1rem;border:1px solid var(--line);border-radius:8px;}
.form button{width:100%;padding:12px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:700;cursor:pointer;}
.form button:hover{background:var(--accent-dark);}
.error{color:#b91c1c;font-size:.9rem;min-height:1.4em;}
.result{border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--soft);}
.result-row{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;border-bottom:1px dashed var(--line);}
.result-row.total{border-bottom:none;font-size:1.1rem;}
.result-row span{color:var(--muted);}
.result-row strong{font-size:1.25rem;color:var(--ink);}
.year-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:.9rem;background:#fff;}
.year-table th,.year-table td{border:1px solid var(--line);padding:8px 10px;text-align:right;}
.year-table th{background:#f9fafb;text-align:center;}
.year-table td:first-child,.year-table th:first-child{text-align:center;}
.disclaimer{font-size:.82rem;color:var(--muted);margin:14px 0 0;}
.note{margin:28px 0;}
.note h2{font-size:1.15rem;margin:0 0 8px;}
.note p{color:var(--muted);font-size:.95rem;}
.ad-slot{margin:24px auto;text-align:center;max-width:728px;}
.site-footer{border-top:1px solid var(--line);margin-top:40px;padding:20px 0;color:var(--muted);font-size:.88rem;}
.site-footer a{color:var(--muted);}
.site-footer .copy{margin:8px 0 0;}