:root {color-scheme:light;--ink:#172039;--muted:#526078;--blue:#1f5eff;--line:#dce3ef;--bg:#f6f8fc;}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Yu Gothic",Meiryo,sans-serif;line-height:1.75;font-size:1.0rem}
a{color:var(--blue)}a:focus-visible{outline:3px solid #184fe2;outline-offset:5px}.wrap{width:min(1060px,calc(100% - 40px));margin:auto}.skip{position:absolute;left:20px;top:-90px;z-index:20;background:white;padding:10px}.skip:focus{top:10px}
.header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{min-height:78px;display:flex;justify-content:space-between;align-items:center;gap:24px}.brand{font-size:1.4375rem;letter-spacing:.02em;font-weight:800;color:var(--ink);text-decoration:none;white-space:nowrap}nav{display:flex;gap:28px}nav a{font-size:0.875rem;font-weight:700;color:var(--muted);text-decoration:none}nav a:hover{color:var(--blue)}
.intro{padding:38px 0 30px}.eyebrow{font-size:0.875rem;font-weight:700;letter-spacing:.03em;color:var(--blue);margin:0 0 14px}h1{font-size:clamp(2rem,3.8vw,2.75rem);line-height:1.4;letter-spacing:-.035em;margin:0;font-weight:800}.lead{color:var(--muted);margin:20px 0;font-size:1.0625rem}.facts{list-style:none;padding:0;margin:24px 0 0;display:flex;gap:12px 24px;flex-wrap:wrap;font-size:0.875rem;font-weight:700}.facts li{border-left:3px solid var(--blue);padding-left:10px}
.section-title{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:18px}h2{font-size:1.4375rem;margin:0;line-height:1.5}.section-title span{font-size:0.875rem;color:var(--muted)}.tools{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.tool-card{border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:4px 4px 16px 16px;background:white;padding:28px;display:flex;flex-direction:column;box-shadow:0 6px 20px #10244006}.card-top{display:flex;align-items:center;gap:12px}.number{font-size:1.0rem;color:var(--blue);font-weight:800;font-variant-numeric:tabular-nums}.category{font-size:0.875rem;color:var(--muted)}h3{font-size:1.75rem;line-height:1.5;letter-spacing:-.025em;margin:14px 0}.purpose{font-weight:700;margin:0 0 8px}.description{color:var(--muted);margin:0 0 18px;flex-grow:1}.tool-card dl{margin:0 0 24px;border-top:1px solid var(--line);font-size:0.875rem}.tool-card dl div{display:grid;grid-template-columns:44px 1fr;gap:10px;border-bottom:1px solid var(--line);padding:9px 0}.tool-card dt{color:var(--muted)}.tool-card dd{margin:0}.button{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--blue);color:white;text-decoration:none;font-size:1.0rem;font-weight:700;padding:14px 17px;border-radius:9px;min-height:52px}.button:hover{background:#174ad0}.guide{font-size:0.875rem;color:var(--muted);margin:18px 0 0}
.privacy{display:grid;grid-template-columns:1fr 1.6fr;gap:48px;margin:60px 0;padding:36px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.privacy h2{font-size:1.625rem}.privacy-copy p{margin:0 0 14px;color:var(--muted)}.privacy-copy p:last-child{margin:0}.small{font-size:0.875rem}.footer{background:white;border-top:1px solid var(--line)}.footer-inner{display:flex;align-items:center;gap:24px;padding:26px 0;font-size:0.875rem}.footer-inner span{color:var(--muted);flex:1}.footer a{font-weight:700;text-decoration:none}
@media(max-width:900px) and (min-width:681px){.tools{grid-template-columns:1fr 1fr}.tool-card:last-child{grid-column:1/-1}}
@media(max-width:680px){.wrap{width:calc(100% - 32px)}.header-inner{min-height:76px;gap:12px;flex-wrap:wrap;padding:14px 0}.brand{font-size:1.3125rem}nav{gap:18px}.intro{padding:34px 0 30px}.lead{font-size:1.0rem}.desktop-break{display:none}.facts{gap:10px 16px;font-size:0.8125rem}.tools{grid-template-columns:1fr;gap:20px}.tool-card{padding:23px}h3{font-size:1.625rem}.section-title h2{font-size:1.25rem}.privacy{grid-template-columns:1fr;gap:22px;margin:38px 0;padding:28px 0}.privacy h2 br{display:none}.privacy h2{font-size:1.4375rem}.footer-inner{align-items:flex-start;flex-direction:column;gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}