/* 10/15 社長決定：白 × 濃紺 × 青（方針04 §5）。金色・緑は使わない。ロゴが白地なので明るい配色だけにする */
:root{--bg:#f4f6fa;--card:#fff;--ink:#16202c;--muted:#5a6575;--line:#dde3ec;--navy:#0b1f3a;--navy2:#16335e;--accent:#1d5bd6;--accent-ink:#1747a8;--soft:#eaf1fd;--warn:#7a4a0c;--warn-bg:#fdf3e3;color-scheme:light}
body{background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic",Meiryo,system-ui,sans-serif;line-height:1.85;font-size:15.5px;-webkit-font-smoothing:antialiased}
.wrap{max-width:960px;margin:0 auto;padding-inline:16px;padding-block:24px 48px;display:grid;gap:24px}
.note{color:var(--muted);font-size:13px}
nav.toc{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:13px}
section.page{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;min-width:0}
section.page>.slug{font-size:12px;color:var(--muted);letter-spacing:.06em}
h1{font-size:24px;line-height:1.45;text-wrap:balance;color:var(--navy)}h2{font-size:19px;margin-top:26px;color:var(--navy);line-height:1.5}
h3{color:var(--navy)}
a{color:var(--accent-ink)}
.scope{background:var(--soft);color:var(--navy2);border-radius:6px;padding:6px 10px;font-size:13px}
.crumb{font-size:12px;color:var(--muted)}
.answer{border-left:3px solid var(--accent);padding-left:12px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:10px 20px;border-radius:8px;text-decoration:none;font-weight:700;line-height:1.5}
.btn:hover{background:var(--accent-ink)}
table{border-collapse:collapse;width:100%;font-size:14px}th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{color:var(--navy2)}
.tw{overflow-x:auto}.op{font-size:12.5px;color:var(--muted)}
.actions{display:flex;flex-wrap:wrap;gap:10px}
.btn.ghost{background:transparent;color:var(--accent-ink);border:1px solid var(--accent)}
.btn.ghost:hover{background:var(--soft)}
.tags{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.tags li{font-size:12.5px;background:var(--soft);color:var(--navy2);border-radius:4px;padding:2px 9px}
.cards{display:grid;gap:14px}
@media (min-width:760px){.cards{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;min-width:0;display:flex;flex-direction:column}
.card .actions{margin-top:auto}
.card h3{margin:4px 0 10px;font-size:18px}.card h3 a{color:var(--navy);text-decoration:none}
.catch{font-weight:700;color:var(--accent-ink);margin:0}
.badge{font-size:11px;background:var(--navy);color:#fff;border-radius:4px;padding:2px 6px;vertical-align:middle}
table.kv th{width:5em;color:var(--muted);font-weight:500}
.excerpt{font-size:13.5px;color:var(--muted)}
.sticky{position:sticky;bottom:0;padding:10px 16px;background:linear-gradient(transparent,var(--bg) 30%);text-align:center}
.sticky .btn{display:block;max-width:520px;margin:0 auto;padding:12px 16px;font-size:16px;box-shadow:0 4px 14px rgba(11,31,58,.22)}
@media (min-width:900px){.sticky{display:none}}
/* トップの最初の画面 */
.hero{position:relative;overflow:hidden;background:var(--navy);color:#fff;border-radius:16px;padding:40px 24px 32px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 100% 0%,rgba(46,111,235,.55),transparent 55%),radial-gradient(80% 70% at 0% 100%,rgba(22,51,94,.9),transparent 60%);pointer-events:none}
.hero::after{content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border:1px solid rgba(255,255,255,.18);border-radius:50%;box-shadow:0 0 0 40px rgba(255,255,255,.03),0 0 0 90px rgba(255,255,255,.025);pointer-events:none}
.hero>*{position:relative}
.hero-catch{font-size:clamp(28px,7vw,44px);font-weight:800;line-height:1.3;margin:0;letter-spacing:.02em;text-wrap:balance}
.hero h1{font-size:14px;font-weight:500;color:#c9d6ee;margin:14px 0 6px}
.hero .lead{color:#e3eaf7;margin:0 0 6px;max-width:34em}
.hero .points{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 22px}
.hero .points li{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:4px 14px;font-size:13px}
.hero .btn{background:#fff;color:var(--navy);padding:12px 22px}
.hero .btn:hover{background:var(--soft)}
.hero .btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.hero .btn.ghost:hover{background:rgba(255,255,255,.08)}
/* セクション */
.sec{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 20px}
.sec>h2:first-child,.sec>.eyebrow+h2{margin-top:2px}
.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--accent);font-weight:700;margin:0}
.grid{display:grid;gap:12px}
@media (min-width:760px){.grid.g2{grid-template-columns:1fr 1fr}.grid.g3{grid-template-columns:1fr 1fr 1fr}}
.tile{border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:var(--card)}
.tile h3{font-size:16px;margin:0 0 6px}
.tile p{margin:0;font-size:14px;color:var(--muted)}
.num{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:var(--navy);color:#fff;font-size:13px;font-weight:700;margin-right:8px}
.prefs{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.prefs a{display:inline-block;border:1px solid var(--line);border-radius:8px;padding:8px 14px;text-decoration:none;color:var(--navy);background:var(--card);font-weight:700}
.prefs a:hover{border-color:var(--accent);background:var(--soft)}
.prefs small{color:var(--muted);font-weight:400}
.calc{background:var(--soft);border-radius:10px;padding:14px 16px}
.calc p{margin:4px 0}
.calc .big{font-size:18px;font-weight:800;color:var(--navy)}
details.faq{border-bottom:1px solid var(--line);padding:10px 0}
details.faq summary{cursor:pointer;font-weight:700;color:var(--navy)}
details.faq p{margin:8px 0 0}

*{box-sizing:border-box}body{margin:0}
header.top,footer.bottom{background:var(--card);border-bottom:1px solid var(--line)}
footer.bottom{border-top:1px solid var(--line);border-bottom:0;margin-top:32px}
header.top{position:sticky;top:0;z-index:5;box-shadow:0 1px 0 var(--line)}
header.top .in,footer.bottom .in{max-width:960px;margin:0 auto;padding:6px 16px}
header.top .in{display:flex;align-items:center;justify-content:space-between;gap:12px}
header.top a.logo{display:block;line-height:0}header.top a.logo img{height:48px;width:auto}
header.top nav{display:flex;gap:14px;font-size:13.5px;font-weight:700}
header.top nav a{color:var(--navy);text-decoration:none}header.top nav a:hover{color:var(--accent)}
@media (max-width:520px){header.top nav a:not(:first-child){display:none}header.top a.logo img{height:40px}}
main.wrap{gap:12px}main.wrap>*{min-width:0}