:root{--fs-xs: 12px;--fs-sm: 14px;--fs-base: 16px;--fs-lg: 18px;--fs-xl: 22px;--fs-2xl: 28px;--c-bg: #ffffff;--c-fg: #1a1a1a;--c-muted: #6b7280;--c-primary: #0b3d5e;--c-primary-hover: #0d4a73;--c-danger: #b91c1c;--c-warning-bg: #fff7ed;--c-warning-fg: #b45309;--c-border: #e5e7eb;--c-success: #15803d;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--c-bg);color:var(--c-fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Yu Gothic UI,Noto Sans JP,Noto Sans KR,sans-serif;font-size:var(--fs-base);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}input,select,textarea,button{font-family:inherit;font-size:var(--fs-base)}button{cursor:pointer}a{color:var(--c-primary)}.container{max-width:480px;margin:0 auto;padding:16px}.muted{color:var(--c-muted);font-size:var(--fs-sm)}.notice{background:var(--c-warning-bg);color:var(--c-warning-fg);padding:10px 12px;border-radius:var(--radius-md);font-size:var(--fs-sm);line-height:1.5}label{display:block;font-size:var(--fs-sm);color:var(--c-muted);margin-bottom:4px;margin-top:12px}input[type=text],input[type=email],textarea{width:100%;padding:12px;border:1px solid var(--c-border);border-radius:var(--radius-md);font-size:var(--fs-base)}textarea{resize:vertical;min-height:80px}.about{--c-deep: #0b3d5e;--c-accent: #0d4a73;--c-soft: #f0f5fa;color:var(--c-fg)}.about-wide{max-width:1100px;margin:0 auto;padding:0 20px}.about-hero{background:linear-gradient(135deg,#0b3d5e,#1f6da3);color:#fff;padding:80px 20px;text-align:center}.about-hero .badge{display:inline-block;font-size:var(--fs-sm);letter-spacing:.05em;background:#ffffff26;padding:6px 14px;border-radius:999px}.about-hero h1{font-size:clamp(28px,5vw,44px);margin:16px 0 12px;line-height:1.25}.about-hero p{white-space:pre-line;opacity:.9;font-size:clamp(15px,2.5vw,18px);max-width:640px;margin:0 auto;line-height:1.7}.about-hero .cta-row{margin-top:28px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.about-hero .cta-row .btn-light{background:#fff;color:var(--c-deep);padding:14px 28px;border-radius:10px;font-weight:700;text-decoration:none;display:inline-block}.about-hero .cta-row .btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);padding:14px 28px;border-radius:10px;font-weight:700;text-decoration:none;display:inline-block}.about section{padding:64px 0}.about section.alt{background:var(--c-soft)}.about h2{font-size:clamp(22px,4vw,30px);text-align:center;margin:0 0 36px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.stat{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:24px;text-align:center}.stat .num{font-size:clamp(24px,4vw,32px);font-weight:700;color:var(--c-deep)}.stat .lbl{font-size:var(--fs-sm);color:var(--c-muted);margin-top:6px}.how{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.how-step{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:24px}.how-step h3{font-size:var(--fs-lg);margin:0 0 8px;color:var(--c-deep)}.how-step p{margin:0;color:var(--c-muted);line-height:1.7}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.feat-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:22px}.feat-card h3{font-size:var(--fs-lg);margin:0 0 10px}.feat-card p{margin:0;color:var(--c-muted);line-height:1.7}.pricing{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;max-width:720px;margin:0 auto}.price-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:28px;text-align:center}.price-card .price{font-size:32px;font-weight:700;color:var(--c-deep);margin:8px 0 4px}.price-card .desc{color:var(--c-muted);font-size:var(--fs-sm);margin:0 0 16px}.price-card ul{list-style:none;padding:0;margin:0 0 16px;text-align:left}.price-card li{padding:6px 0;border-bottom:1px solid var(--c-border)}.price-card li:before{content:"✓ ";color:var(--c-success);font-weight:700}.trust{max-width:700px;margin:0 auto}.trust li{padding:10px 0;border-bottom:1px solid var(--c-border);list-style:none}.trust li:before{content:"🛡 "}.cta-final{text-align:center;background:var(--c-deep);color:#fff;padding:64px 20px}.cta-final h2{color:#fff;margin:0 0 12px}.cta-final p{opacity:.9;max-width:500px;margin:0 auto 24px;line-height:1.7}.cta-final a{background:#fff;color:var(--c-deep);padding:14px 32px;border-radius:10px;font-weight:700;text-decoration:none;display:inline-block}.about-nav{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:#fff;border-bottom:1px solid var(--c-border);position:sticky;top:0;z-index:10}.about-nav .logo{font-weight:700;font-size:var(--fs-lg);color:var(--c-deep);text-decoration:none}.about-nav .nav-links a{margin-left:16px;text-decoration:none;color:var(--c-fg);font-size:var(--fs-sm)}.about-nav .nav-links a:hover{color:var(--c-primary)}@media (max-width: 480px){.about-nav .nav-links a:not(:last-child){display:none}}