:root{color-scheme:light dark;--bg:#f6f8fb;--surface:#fff;--ink:#16263a;--muted:#4f6075;--blue:#1856a4;--line:#dbe3ed;--soft:#e9eff7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;font-size:17px;line-height:1.95;overflow-wrap:anywhere}a{color:var(--blue);text-underline-offset:5px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid #3990ed;outline-offset:5px}.skip{position:absolute;top:-100px;background:var(--surface);padding:10px}.skip:focus{top:0;z-index:5}.header{max-width:1200px;margin:auto;padding:23px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{text-decoration:none;color:var(--ink);font-size:23px;letter-spacing:.04em;line-height:1.4;white-space:nowrap}.brand strong{letter-spacing:.12em}.brand span{display:block;font-size:10px;color:var(--muted);letter-spacing:.14em;margin-top:6px}.header nav{display:flex;flex-wrap:wrap;gap:8px 25px}.header nav a{font-size:14px;color:var(--ink);text-decoration:none;padding:5px 0}.header a[aria-current]{border-bottom:2px solid var(--blue)}.hero{position:relative;background:#071f36;color:white;min-height:520px;display:flex;align-items:center;overflow:hidden}.hero>img{position:absolute;width:100%;height:100%;object-fit:cover;inset:0;opacity:.55}.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,15,29,.88),rgba(3,15,29,.12))}.hero-copy{position:relative;z-index:1;max-width:1136px;width:100%;margin:auto;padding:65px 32px}.eyebrow{letter-spacing:.2em;font-size:12px;color:var(--blue);font-weight:700;margin:0 0 18px}.hero .eyebrow{color:#a7cdfb}h1,h2,h3{line-height:1.5;text-wrap:balance}h1{font-size:clamp(30px,4vw,48px);letter-spacing:.025em;margin:0 0 24px}.hero h1{font-size:clamp(36px,5vw,60px)}.hero-copy>p{max-width:600px}.hero a{color:white}.button{display:inline-block;padding:10px 24px;border-radius:5px;background:#eaf3ff;color:#173c68!important;text-decoration:none;font-size:15px;font-weight:600;margin-top:14px}.wrap{max-width:1136px;margin:auto;padding:65px 32px}.intro{max-width:760px}.intro h2{font-size:30px}.lead{font-size:19px;color:var(--muted);margin-bottom:45px}.notice{background:var(--soft);padding:18px 23px;border-left:3px solid var(--blue);font-size:15px;margin-top:30px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;margin-top:36px}.features section{border-top:2px solid var(--line);padding-top:24px}.features h3{font-size:21px;margin:0 0 10px}.features p{font-size:16px;color:var(--muted)}.section-title{display:flex;justify-content:space-between;align-items:baseline;gap:20px}.section-title h2{font-size:29px}.stories{list-style:none;padding:0;margin:20px 0}.stories li{border-top:1px solid var(--line);padding:24px 0}.stories a{display:block;font-size:22px;text-decoration:none}.stories p{font-size:16px;color:var(--muted);margin:7px 0}.document{max-width:860px;margin:25px auto 80px;padding:30px 32px}.document h2{font-size:25px;margin-top:45px}.document h3{font-size:20px;margin-top:30px}.document p{margin:17px 0}.document li{margin:9px 0}.document .eyebrow{margin-bottom:15px}.document .lead{border-bottom:1px solid var(--line);padding-bottom:30px;margin-bottom:35px}.byline{font-size:13px;color:var(--muted)}.steps{padding-left:24px}.steps li{padding-left:8px;margin:25px 0}.steps strong{display:block}details{border-bottom:1px solid var(--line);padding:20px 0}summary{cursor:pointer;font-weight:600;padding:4px 0}details p{color:var(--muted)}.related{border-top:1px solid var(--line);margin-top:45px;padding-top:22px}.related a{display:block;margin:10px 0}footer{border-top:1px solid var(--line);max-width:1136px;margin:auto;padding:42px 32px;color:var(--muted);font-size:13px}footer nav{display:flex;flex-wrap:wrap;gap:10px 24px;margin:26px 0}footer a{color:var(--muted)}footer .brand{color:var(--ink)}.copyright{margin-top:30px}@media(max-width:700px){.header{padding:20px;display:block}.header nav{gap:4px 22px;margin-top:19px}.header nav a{font-size:13px;min-height:40px;display:inline-flex;align-items:center}.hero{min-height:485px}.hero-copy{padding:45px 24px}.hero h1{font-size:38px}.hero-copy>p{font-size:16px}.wrap{padding:43px 24px}.features{grid-template-columns:1fr;gap:18px}.features section{padding-top:16px}.document{margin:8px auto 50px;padding:25px 24px}.document h1{font-size:30px}.lead{font-size:17px}.section-title{display:block}.stories a{font-size:20px}footer{padding:35px 24px}footer nav a{padding:7px 0}.notice{padding:16px}.intro h2{font-size:26px}}@media(prefers-color-scheme:dark){:root{--bg:#0d1929;--surface:#132338;--ink:#e7eef7;--muted:#b4c2d4;--blue:#9ac4ff;--line:#2d4059;--soft:#182b43}.button{background:#d7e8ff}.hero>img{opacity:.6}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Keep the application entrance visible and usable on narrow phones. */
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px 24px}.hero-secondary{display:inline-flex;align-items:center;min-height:44px;color:#fff}.hero .app-access-note{font-size:15px;color:#d6e4f5;margin-top:14px}.app-functions{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}.app-functions a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 15px;border:1px solid var(--line);border-radius:8px;background:var(--surface);text-decoration:none}.header nav a:first-child{font-weight:700;color:var(--blue)}