:root{--navy:#0C447C;--coral:#F0997B;--ink:#1c1c1e;--sub:#5f5e5a;--line:#e5e3dc;--bg:#faf9f6;--card:#fff}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--ink:#f2f1ed;--sub:#b4b2a9;--line:#3a3a38;--bg:#1a1a19;--card:#242423}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;line-height:1.8;font-size:16px}
a{color:var(--navy)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) a{color:#85B7EB}}
header.site{display:flex;align-items:center;gap:10px;max-width:880px;margin:0 auto;padding:16px}
header.site img{width:36px;height:36px;border-radius:9px}
header.site a.brand{font-weight:700;font-size:18px;text-decoration:none;color:var(--ink)}
header.site nav{margin-left:auto;display:flex;gap:16px;font-size:14px}
main{max-width:880px;margin:0 auto;padding:8px 16px 48px}
footer{border-top:1px solid var(--line);color:var(--sub);font-size:13px;text-align:center;padding:24px 16px}
footer a{color:var(--sub);margin:0 8px}
.hero{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;padding:24px 0 8px}
@media(min-width:760px){.hero{grid-template-columns:1.1fr .9fr}}
.hero h1{font-size:clamp(28px,6vw,40px);line-height:1.3;margin:0 0 8px}
.hero p.lead{color:var(--sub);font-size:17px;margin:0 0 20px}
.badge{display:inline-block;background:var(--navy);color:#fff;border-radius:999px;padding:4px 12px;font-size:13px;margin-bottom:12px}
.btn{display:inline-block;background:var(--navy);color:#fff!important;text-decoration:none;padding:12px 22px;border-radius:12px;font-weight:700}
.btn.ghost{background:transparent;color:var(--navy)!important;border:1.5px solid var(--navy);margin-left:8px}
.shots{display:flex;gap:12px;justify-content:center}
.shots img{width:31%;max-width:200px;border-radius:22px;border:1px solid var(--line);box-shadow:0 6px 20px rgba(0,0,0,.08)}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:32px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
.card h3{margin:0 0 6px;font-size:17px}
.card p{margin:0;color:var(--sub);font-size:15px}
.doc h1{font-size:28px;margin:16px 0 4px}
.doc .meta{color:var(--sub);font-size:14px;margin-bottom:24px}
.doc h2{font-size:19px;margin:32px 0 8px;padding-top:8px;border-top:1px solid var(--line)}
.doc li{margin:4px 0}
.note{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--coral);border-radius:0;padding:12px 16px;margin:16px 0}