:root{--ink:#1c2430;--muted:#5b6673;--line:#e6e9ee;--bg:#ffffff;--soft:#f5f7fa;--brand:#0f3d5e;--accent:#1b7f4b;--risk:#c0392b;--warn:#b7791f;--radius:12px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",-apple-system,Helvetica,Arial,"Noto Sans JP",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
a{color:var(--brand)}
img{max-width:100%}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;letter-spacing:.2px;color:var(--brand);text-decoration:none;font-size:18px}
.logo span{color:var(--accent)}
nav.main a{margin-left:18px;text-decoration:none;color:var(--ink);font-size:15px}
nav.main a.cta{background:var(--accent);color:#fff;padding:8px 14px;border-radius:8px;font-weight:600}
.hero{padding:64px 0 40px;background:linear-gradient(180deg,#f7fafc 0%,#fff 100%)}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 14px;letter-spacing:-.3px}
.hero p.lead{font-size:19px;color:var(--muted);max-width:720px;margin:0 0 24px}
.hero .actions a{display:inline-block;margin:6px 10px 6px 0}
.btn{display:inline-block;padding:12px 20px;border-radius:10px;font-weight:700;text-decoration:none;border:2px solid transparent}
.btn.primary{background:var(--accent);color:#fff}
.btn.secondary{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn.small{padding:8px 14px;font-size:14px}
.trust{display:flex;flex-wrap:wrap;gap:16px 28px;color:var(--muted);font-size:14px;margin-top:22px}
section{padding:48px 0}
section h2{font-size:28px;margin:0 0 8px;letter-spacing:-.2px}
section p.sub{color:var(--muted);margin:0 0 24px;font-size:17px}
.grid{display:grid;gap:18px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;color:var(--muted);font-size:15px}
.step{display:flex;gap:14px}
.step .n{flex:0 0 36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
table.checks{width:100%;border-collapse:collapse;font-size:15px}
table.checks th,table.checks td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}
table.checks th{width:30%;font-weight:600}
.tag{display:inline-block;color:#fff;font-size:11px;padding:2px 7px;border-radius:4px;font-weight:700;margin-right:6px}
.tag.risk{background:var(--risk)}.tag.warn{background:var(--warn)}.tag.ok{background:var(--accent)}.tag.unknown{background:#6b7280}
.pricing .card{position:relative}
.pricing .price{font-size:36px;font-weight:800;margin:6px 0}
.pricing .price small{font-size:14px;color:var(--muted);font-weight:500}
.pricing ul{padding-left:18px;margin:10px 0 16px;color:var(--muted);font-size:15px}
.pricing .badge{position:absolute;top:-12px;right:16px;background:var(--brand);color:#fff;font-size:12px;padding:4px 10px;border-radius:99px;font-weight:700}
.faq details{border-bottom:1px solid var(--line);padding:12px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:17px}
.faq p{color:var(--muted);margin:8px 0 0}
.note{background:var(--soft);border-radius:var(--radius);padding:16px 18px;font-size:14px;color:var(--muted)}
form.f{display:grid;gap:12px;max-width:520px}
form.f input,form.f textarea,form.f select{width:100%;padding:12px;border:1px solid #cfd5dd;border-radius:8px;font-size:16px;font-family:inherit}
form.f label{font-size:14px;font-weight:600}
form.f .ok{display:none;background:#e9f7ef;border:1px solid #bfe6cf;padding:14px;border-radius:8px}
footer.site{border-top:1px solid var(--line);padding:32px 0;color:var(--muted);font-size:14px}
footer.site a{color:var(--muted);margin-right:14px}
.disc{font-size:13px;color:var(--muted);margin-top:12px}
.article{max-width:760px}
.article h1{font-size:34px;line-height:1.2}
.article h2{font-size:24px;margin-top:36px}
.article p,.article li{font-size:17px}
.article .meta{color:var(--muted);font-size:14px}
.article blockquote{border-left:4px solid var(--brand);margin:0;padding:6px 16px;background:var(--soft)}
.ctabox{background:var(--brand);color:#fff;border-radius:var(--radius);padding:24px;margin:32px 0}
.ctabox a.btn{background:#fff;color:var(--brand)}
.ctabox p{margin:0 0 12px}
.list-articles li{margin:10px 0}
@media (max-width:820px){.grid.c3,.grid.c2{grid-template-columns:1fr}.hero h1{font-size:30px}nav.main a:not(.cta){display:none}}