:root{--text: #222;--text-sub: #555;--bg: #fff;--bg-warm: #FAFAF8;--accent: #2255AA;--border: #DDD;--serif: "Noto Serif JP", serif;--sans: "IBM Plex Sans JP", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.85;font-size:15.5px}.container{max-width:960px;margin:0 auto;padding:0 24px}.narrow{max-width:720px}.centered{text-align:center}.nav{display:flex;justify-content:space-between;align-items:center;padding:18px 32px;position:fixed;top:0;left:0;right:0;background:#111827eb;backdrop-filter:blur(12px);z-index:50}.nav-home{color:#ffffffd9;text-decoration:none;font-weight:600;font-size:.9rem;letter-spacing:.04em}.nav-contact{color:#fff;text-decoration:none;font-weight:600;font-size:.82rem;background:var(--accent);padding:7px 18px;border-radius:4px}.nav-contact:hover{background:#1a4488}.hero{padding:160px 24px 110px;background:#111827;color:#fff}.hero .container{max-width:720px}.hero-label{font-family:Sora,sans-serif;font-size:.75rem;font-weight:600;color:#7eb8ff;letter-spacing:.12em;text-transform:uppercase;margin-bottom:24px}.hero h1{font-family:var(--serif);font-size:clamp(1.8rem,5vw,2.8rem);font-weight:700;line-height:1.4;margin-bottom:28px;color:#fff;letter-spacing:.02em}.hero-lead{font-size:1.05rem;color:#ffffffb3;margin-bottom:40px;line-height:1.85}.hero-actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap}.numbers{background:#1e293b;padding:48px 24px;border-bottom:3px solid var(--accent)}.numbers-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:720px;margin:0 auto;text-align:center}.num-item{display:flex;flex-direction:column;gap:4px}.num-value{font-family:Sora,sans-serif;font-size:clamp(2rem,5vw,2.8rem);font-weight:700;color:#fff;letter-spacing:-.02em;line-height:1.1}.num-value 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28px;border-right:1px solid var(--border);position:relative}.layer:last-child{border-right:none}.layer-header{margin-bottom:16px}.layer-label{font-family:Sora,sans-serif;font-size:1.6rem;font-weight:700;color:var(--accent);letter-spacing:-.01em;display:block;margin-bottom:6px;line-height:1}.layer h3{font-size:.95rem;font-weight:600}.layer p{color:var(--text-sub);font-size:.88rem;line-height:1.75}.roles-table-wrap{margin-top:8px;overflow-x:auto}.roles-table{width:100%;border-collapse:collapse;font-size:.92rem}.roles-table th{text-align:left;font-weight:500;color:var(--text-sub);padding:10px 16px 10px 0;border-bottom:2px solid var(--border);font-size:.8rem;letter-spacing:.04em}.roles-table td{padding:12px 16px 12px 0;border-bottom:1px solid #eee}.roles-table td strong{font-weight:600;color:var(--text)}.table-note{margin-top:16px;font-size:.82rem;color:var(--text-sub)}.feature-list{margin-top:8px}.feature-item{padding:24px 0;border-bottom:1px solid var(--border)}.feature-item:last-child{border-bottom:none}.feature-item dt{font-weight:600;font-size:1rem;margin-bottom:6px}.feature-item dd{color:var(--text-sub);font-size:.92rem;margin:0}.setup-steps{margin:28px 0 0;padding-left:20px}.setup-steps li{padding:10px 0;border-bottom:1px solid #eee;font-size:.92rem;display:flex;justify-content:space-between;align-items:center;list-style-position:outside}.setup-steps li:last-child{border-bottom:none}.step-time{font-size:.8rem;color:var(--text-sub);flex-shrink:0;margin-left:12px}.section-dark{background:#111827;color:#fff}.section-dark h2{color:#fff}.section-dark .section-lead{color:#fff9}.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:12px}.case-card{padding:32px 28px;background:#ffffff0f;border:1px solid rgba(255,255,255,.1);border-radius:6px}.case-card h3{font-size:1rem;font-weight:600;margin-bottom:10px;color:#fff}.case-card p{color:#fff9;font-size:.9rem;line-height:1.75}.faq-list{margin-top:8px}.faq-item{border-bottom:1px solid var(--border)}.faq-item summary{padding:18px 0;font-weight:600;font-size:.95rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}.faq-item summary:after{content:"+";font-size:1.2rem;color:var(--text-sub);flex-shrink:0;margin-left:16px}.faq-item[open] summary:after{content:"−"}.faq-item p{padding:0 0 18px;font-size:.9rem;color:var(--text-sub);line-height:1.8}.form-wrap{background:#fff;border-radius:8px;padding:20px;border:1px solid var(--border)}.form-wrap iframe{border-radius:4px}.footer{border-top:1px solid var(--border);padding:20px 24px}.footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}.footer a{color:var(--text);text-decoration:none;font-weight:600;font-size:.8rem}.footer span{font-size:.75rem;color:var(--text-sub)}.callout{font-family:var(--serif);font-size:clamp(1.15rem,3vw,1.4rem);font-weight:700;color:var(--text);border-left:4px solid var(--accent);padding:16px 0 16px 24px;margin:28px 0;line-height:1.6}.section-cta{text-align:center;padding:56px 24px;background:var(--accent)}.section-cta h2{color:#fff;font-family:var(--serif);font-size:clamp(1.2rem,3vw,1.6rem);margin-bottom:20px}.section-cta .btn-white{display:inline-block;background:#fff;color:var(--accent);padding:14px 36px;border-radius:4px;font-weight:700;font-size:.95rem;text-decoration:none}.section-cta .btn-white:hover{background:#e5e7eb}.sp-hide{display:inline}@media(max-width:640px){.sp-hide{display:none}.hero{padding:130px 20px 70px}.hero h1{font-size:1.5rem}.section{padding:56px 20px}.nav{padding:14px 20px}.numbers{padding:36px 20px}.numbers-grid{grid-template-columns:repeat(2,1fr);gap:24px}.layer-list{grid-template-columns:1fr;gap:0}.layer{border-right:none;border-bottom:1px solid var(--border);padding:28px 0}.layer:last-child{border-bottom:none}.cases-grid{grid-template-columns:1fr}.footer .container{flex-direction:column;text-align:center}}