:root{--ink:#18202a;--muted:#66717d;--line:#e5e8eb;--bg:#fff;--soft:#f5f7f8;--accent:#1d6fe8;--accent-dark:#1257bc;--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Yu Gothic",sans-serif;line-height:1.8}a{color:inherit;text-decoration:none}.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.logo{font-weight:800;font-size:18px;letter-spacing:-.03em}.logo span{color:var(--accent)}nav{display:flex;gap:28px;font-size:14px;font-weight:700}
.hero{padding:88px 0 80px;background:linear-gradient(180deg,#f5f8fc 0%,#fff 100%)}.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}.eyebrow{font-size:12px;letter-spacing:.13em;font-weight:800;color:var(--accent);margin:0 0 10px}.hero h1{font-size:clamp(42px,6vw,72px);line-height:1.12;letter-spacing:-.055em;margin:0 0 24px}.hero h1 span{color:var(--accent)}.lead{font-size:18px;color:#4d5966;line-height:1.9}.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}.button{display:inline-block;padding:12px 20px;border-radius:8px;font-weight:800;font-size:14px}.primary{background:var(--accent);color:white}.primary:hover{background:var(--accent-dark)}.secondary{border:1px solid var(--line);background:white}
.hero-card{background:white;border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:0 18px 50px rgba(24,32,42,.08)}.question{font-size:11px;font-weight:900;letter-spacing:.14em;color:var(--accent)}.hero-card h2{margin:5px 0 18px;font-size:23px}.hero-card ul{padding-left:20px;margin:0 0 18px}.small{font-size:13px;color:var(--muted)}
.section{padding:86px 0}.muted{background:var(--soft)}.section-heading{margin-bottom:34px}.section h2{font-size:34px;line-height:1.3;letter-spacing:-.04em;margin:0 0 10px}.section-heading p:last-child{color:var(--muted);margin:0}.grid{display:grid;gap:14px}.six{grid-template-columns:repeat(3,1fr)}.work-card{padding:24px;background:white;border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;gap:4px;transition:.2s}.work-card:hover{border-color:#b9c9dc;transform:translateY(-2px)}.work-card b{font-size:17px}.work-card span{font-size:13px;color:var(--muted)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.two-col p{color:var(--muted)}.check-list{display:grid;gap:10px}.check-list div{display:flex;gap:18px;align-items:center;padding:18px 20px;background:white;border:1px solid var(--line);border-radius:10px}.check-list strong{color:var(--accent);font-size:12px}.check-list span{font-weight:800}
.feature-card{border:1px solid var(--line);border-radius:16px;padding:32px;background:white}.feature-card h3{font-size:25px;line-height:1.5;margin:5px 0 12px}.feature-card p{color:var(--muted)}.tag{font-size:11px!important;color:var(--accent)!important;font-weight:900;letter-spacing:.12em}.text-link{font-weight:800;color:var(--accent)}
.diagnosis-cta{text-align:center;background:#18202a;color:white}.diagnosis-cta .eyebrow{color:#8dbaff}.diagnosis-cta p{color:#c7d0da}.diagnosis-cta .primary{margin-top:14px}
.footer{border-top:1px solid var(--line);padding:40px 0 20px;background:#fff}.footer-grid{display:flex;justify-content:space-between;gap:40px}.footer p,.copyright{font-size:13px;color:var(--muted)}.footer-grid>div:last-child{display:flex;gap:20px;flex-wrap:wrap;font-size:13px}.copyright{border-top:1px solid var(--line);margin-top:28px;padding-top:16px}
.article{max-width:780px;margin:auto;padding:70px 0}.article h1{font-size:clamp(32px,5vw,52px);line-height:1.35;letter-spacing:-.045em}.article h2{font-size:28px;margin-top:50px}.article p,.article li{font-size:17px}.article .lead{font-size:19px}.article table{width:100%;border-collapse:collapse;margin:25px 0}.article th,.article td{border:1px solid var(--line);padding:12px;text-align:left;font-size:14px}.article th{background:var(--soft)}.note{background:#f5f8fc;border-left:4px solid var(--accent);padding:18px 20px;margin:25px 0}
.diagnosis{max-width:760px;margin:auto;padding:70px 0}.question-card{border:1px solid var(--line);border-radius:16px;padding:28px;margin:20px 0}.question-card label{display:block;padding:12px 14px;margin:8px 0;border:1px solid var(--line);border-radius:8px;cursor:pointer}.question-card input{margin-right:8px}.result{display:none;background:var(--soft);border-radius:16px;padding:28px;margin-top:24px}.result.show{display:block}
@media(max-width:800px){nav{display:none}.hero{padding:55px 0}.hero-inner,.two-col{grid-template-columns:1fr;gap:35px}.six{grid-template-columns:1fr 1fr}.footer-grid{flex-direction:column}.section{padding:60px 0}}
@media(max-width:520px){.container{width:min(var(--max),calc(100% - 28px))}.six{grid-template-columns:1fr}.hero h1{font-size:43px}.section h2{font-size:29px}}