:root{--bg:#f5f5f7;--surface:#fff;--soft:#f2f2f7;--text:#1d1d1f;--muted:#6e6e73;--line:#d2d2d7;--green:#06c755;--green-dark:#05a546;--green-soft:#e8f9ee;--dark:#1d1d1f;--max:1040px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:76px}body{margin:0;background:radial-gradient(900px 500px at 100% 0,rgba(6,199,85,.08),transparent 60%),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue","Noto Sans JP",sans-serif;line-height:1.8;letter-spacing:.005em}a{color:inherit}.container{width:min(calc(100% - 48px),var(--max));margin:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:12px;top:12px;z-index:9;padding:9px 12px;background:#fff;border-radius:8px}header{position:sticky;top:0;z-index:5;border-bottom:1px solid rgba(210,210,215,.7);background:rgba(255,255,255,.84);backdrop-filter:saturate(180%) blur(18px)}.header-inner{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:750;text-decoration:none}.brand img{width:27px;height:27px}.brand span span{color:var(--green)}.back{color:var(--green-dark);font-size:13px;font-weight:650;text-decoration:none}.hero{padding:86px 0 76px;background:linear-gradient(120deg,#fff,#f3fcf6)}.eyebrow{display:inline-flex;gap:7px;align-items:center;margin:0 0 15px;padding:4px 9px;border-radius:999px;color:var(--green-dark);background:var(--green-soft);font-size:12px;font-weight:750}.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green)}h1{max-width:800px;margin:0;font-size:clamp(36px,5vw,58px);line-height:1.22;letter-spacing:-.045em}.hero p{max-width:730px;margin:20px 0 0;color:var(--muted);font-size:17px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:47px;padding:10px 18px;border:1px solid transparent;border-radius:999px;font-size:14px;font-weight:750;text-decoration:none}.primary{color:#fff;background:var(--green);box-shadow:0 10px 20px rgba(6,199,85,.22)}.primary:hover{background:var(--green-dark)}.secondary{border-color:var(--line);background:rgba(255,255,255,.72)}section{padding:74px 0}.head{max-width:730px;margin-bottom:28px}.head h2{margin:0;font-size:clamp(27px,3.5vw,39px);line-height:1.4;letter-spacing:-.03em}.head p{margin:12px 0 0;color:var(--muted);font-size:14px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card{padding:24px;background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:16px}.card .no{color:var(--green-dark);font-size:11px;font-weight:800;letter-spacing:.08em}.card h3{margin:8px 0;font-size:19px}.card p{margin:0;color:var(--muted);font-size:13px}.dark{color:#fff;background:var(--dark)}.dark .head p,.dark .card p{color:#c7c7cc}.dark .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14)}.dark .card .no{color:#62e694}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.feature{padding:21px;background:#fff;border:1px solid var(--line);border-radius:14px}.feature h3{margin:0 0 6px;font-size:16px}.feature p{margin:0;color:var(--muted);font-size:12px}.feature b{display:inline-block;margin-bottom:9px;color:var(--green-dark);font-size:11px;letter-spacing:.06em}.ai-note{margin-top:20px;padding:22px 24px;border-left:3px solid var(--green);border-radius:0 14px 14px 0;background:var(--soft)}.ai-note h3{margin:0 0 7px;font-size:18px}.ai-note p{margin:0;color:var(--muted);font-size:13px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}.step{padding:21px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.step b{color:var(--green-dark);font-size:11px}.step h3{margin:8px 0 5px;font-size:16px}.step p{margin:0;color:var(--muted);font-size:12px}.cta{padding:38px;border-radius:20px;color:#fff;background:linear-gradient(135deg,#202221,#111212)}.cta h2{margin:0;font-size:30px;line-height:1.35}.cta p{max-width:600px;margin:10px 0 22px;color:#c7c7cc}.cta .primary{background:#fff;color:var(--dark);box-shadow:none}.notice{margin-top:16px;color:var(--muted);font-size:11px}footer{padding:32px 0;color:#d2d2d7;background:var(--dark);font-size:12px}@media(max-width:760px){.container{width:min(calc(100% - 28px),var(--max))}.hero{padding:58px 0 48px}.hero p{font-size:15px}.grid-3,.feature-list,.steps{grid-template-columns:1fr}.steps{border-right:1px solid var(--line)}section{padding:52px 0}.cta{padding:28px 22px}.cta h2{font-size:25px}.hero-actions,.hero-actions .btn{width:100%}.header-inner{min-height:58px;align-items:flex-start;padding:14px 0;flex-direction:column;gap:3px}}