:root{--brand:#1769c2;--ink:#253b40;--muted:#667b7f;--line:#e5e8e6;--paper:#f8fbff;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}a{color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--brand);outline-offset:4px}button,a{touch-action:manipulation}.home-header{max-width:1200px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:26px 40px}.home-brand{display:flex;align-items:center;gap:13px;text-decoration:none;font-size:21px;letter-spacing:.1em;font-weight:750}.home-brand img{border-radius:7px}.home-brand small{display:block;font-size:10px;font-weight:500;letter-spacing:.04em;color:var(--muted);margin-top:6px}.header-about{font-size:12px;text-decoration:none;border-bottom:1px solid #d8dfdc;padding:9px 0}.hero{max-width:1200px;margin:0 auto;padding:70px 40px 88px;display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:center}.eyebrow{font-size:10px;font-weight:700;letter-spacing:.18em;color:var(--brand);margin:0 0 24px;line-height:1.7}.hero-copy>.eyebrow{display:flex;align-items:center;gap:9px}.hero-copy>.eyebrow span{width:7px;height:7px;border-radius:50%;background:var(--brand)}h1{font-size:clamp(30px,3.6vw,46px);line-height:1.65;letter-spacing:-.03em;margin:0 0 25px;font-weight:720}h1 em{font-style:normal;color:var(--brand)}.hero-description{font-size:15px;line-height:2.15;color:var(--muted);margin:0 0 32px}.primary-button{display:inline-flex;align-items:center;justify-content:space-between;gap:42px;background:var(--brand);color:white;border:0;border-radius:9px;padding:20px 26px;font-size:15px;font-weight:650;box-shadow:0 8px 25px #1769c217}.primary-button:hover{filter:brightness(.95)}.primary-button>span{font-size:22px;line-height:1}.coverage-label{font-size:10px;letter-spacing:.03em;color:var(--muted);margin:18px 0 0}.hero-art{position:relative;display:flex;align-items:center;justify-content:center;min-height:390px;isolation:isolate}.art-ring{position:absolute;border:1px solid #eadfdf;border-radius:50%;z-index:-1}.ring-one{width:330px;height:330px}.ring-two{width:420px;height:420px;border-style:dashed;opacity:.7}.logo-card{display:grid;place-items:center;width:264px;height:280px;background:white;border:1px solid #eee6e4;border-radius:28px;transform:rotate(-5deg);box-shadow:0 16px 50px #6134350a}.logo-card img{width:208px;height:208px;transform:rotate(5deg);border-radius:10px}.art-caption{position:absolute;bottom:4px;right:8px;display:flex;align-items:center;gap:9px;padding:14px 20px;background:white;border:1px solid var(--line);border-radius:30px;font-size:11px;box-shadow:0 6px 20px #1b333806}.caption-dot{width:7px;height:7px;background:var(--brand);border-radius:50%}.art-dot{position:absolute;width:12px;height:12px;border-radius:50%;background:#eedbdd}.dot-one{left:30px;top:75px}.dot-two{right:18px;bottom:90px;width:9px;height:9px;background:var(--brand);opacity:.5}.introduction{max-width:1120px;margin:0 auto;padding:54px 0 48px;border-top:1px solid var(--line)}.intro-heading .eyebrow{margin-bottom:12px}h2{font-size:23px;letter-spacing:.015em;line-height:1.7;margin:0 0 18px}.introduction>p:not(.data-note){max-width:780px;font-size:13px;line-height:2.1;color:var(--muted);margin-bottom:30px}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:34px}.steps article{padding:25px 0 12px;border-top:1px solid #d8dfdb}.step-number{font-size:13px;color:var(--brand);font-weight:650;letter-spacing:.1em}h3{font-size:15px;margin:15px 0 10px}.steps p{font-size:12px;color:var(--muted);line-height:1.9;margin:0}.data-note{font-size:10px;line-height:1.9;color:var(--muted);margin:28px 0 0;max-width:900px}.data-note a{text-underline-offset:3px}.home-footer{border-top:1px solid var(--line);padding:32px max(40px,calc((100vw - 1120px)/2)) 26px;background:#f5f6f2}.footer-top{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:22px}.footer-brand{font-size:18px;letter-spacing:.12em;font-weight:750;text-decoration:none}.footer-top nav{display:flex;gap:24px;flex-wrap:wrap}.footer-top nav a{font-size:11px;color:var(--muted);text-decoration:none}.footer-top nav a:hover{text-decoration:underline}.copyright,.license-note{font-size:10px;line-height:1.8;color:var(--muted);margin:6px 0}.license-note a{text-underline-offset:3px}dialog{width:min(870px,calc(100vw - 32px));max-height:88svh;padding:30px 32px;border:1px solid var(--line);border-radius:18px;color:var(--ink);background:var(--paper);box-shadow:0 24px 100px #10202530;overflow:auto;overscroll-behavior:contain}dialog::backdrop{background:#17343b80}.dialog-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.dialog-header .eyebrow{margin-bottom:7px}.dialog-header h2{font-size:23px;margin-bottom:0}.close-button{width:40px;height:40px;flex-shrink:0;font-size:27px;color:var(--muted);border:1px solid #dfe5df;background:white;border-radius:50%;line-height:1}.dialog-description{font-size:12px;line-height:1.8;color:var(--muted);margin:10px 0 18px}input[type=search]{width:100%;background:white;border:1px solid #d5deda;border-radius:8px;padding:13px 15px;font-size:14px;color:var(--ink);appearance:none}#prefecture-status{font-size:12px;color:var(--muted);margin:12px 0;line-height:1.8}#prefecture-status:empty{display:none}#retry-prefectures{margin:12px 0;border:1px solid var(--line);border-radius:6px;background:white;padding:10px;color:var(--ink)}.prefecture-group{margin-top:22px}.prefecture-group h3{font-size:11px;letter-spacing:.07em;color:var(--muted);margin:0 0 10px}.prefecture-links{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.prefecture-link{display:flex;align-items:center;justify-content:space-between;gap:5px;border:1px solid #dfe6df;border-radius:7px;padding:12px 13px;background:white;font-size:12px;text-decoration:none;min-height:44px}.prefecture-link:hover{border-color:var(--brand);color:var(--brand);background:#fff7f7}.link-arrow{font-size:13px;color:#a2afaa}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;left:12px;top:-70px;background:white;color:var(--ink);padding:12px;z-index:10}.skip-link:focus{top:12px}[hidden]{display:none!important}
@media(max-width:1200px){.introduction{margin-left:40px;margin-right:40px}.ring-two{width:350px;height:350px}.ring-one{width:280px;height:280px}.logo-card{width:240px;height:250px}.logo-card img{width:192px;height:192px}.art-caption{right:0}}@media(max-width:760px){.home-header{padding:20px 22px}.home-brand{font-size:18px;gap:10px}.home-brand img{width:42px;height:42px}.home-brand small{font-size:8px;margin-top:5px}.header-about{font-size:10px}.hero{padding:46px 24px 42px;grid-template-columns:minmax(0,1fr);gap:36px}.hero-copy>.eyebrow{font-size:9px;margin-bottom:20px}h1{font-size:clamp(27px,6.8vw,40px);line-height:1.7;margin-bottom:22px}.hero-description{font-size:13px;line-height:2}.desktop-break{display:none}.primary-button{font-size:14px;padding:18px 22px;gap:30px;width:min(100%,330px)}.hero-art{min-height:265px;max-width:350px;width:100%;margin:0 auto}.ring-two{width:270px;height:270px}.ring-one{width:210px;height:210px}.logo-card{width:180px;height:190px;border-radius:20px}.logo-card img{width:146px;height:146px}.art-caption{font-size:10px;padding:11px 15px;bottom:-1px}.dot-one{left:18px;top:40px}.dot-two{right:10px;bottom:62px}.introduction{margin:0 24px;padding:36px 0}.intro-heading h2{font-size:20px;line-height:1.8}.introduction>p:not(.data-note){font-size:12px}.steps{grid-template-columns:1fr;gap:10px}.steps article{padding:21px 0 14px}.steps h3{display:inline;font-size:14px;margin-left:16px}.steps p{margin-top:10px}.data-note{font-size:10px}.home-footer{padding:26px 24px}.footer-top{display:block;margin-bottom:20px}.footer-top nav{gap:13px 20px;margin-top:20px}.footer-top nav a{font-size:10px}.copyright,.license-note{font-size:9px}dialog{padding:24px 20px;max-height:88svh;border-radius:13px}.dialog-header h2{font-size:19px}.dialog-header{gap:10px}.dialog-header .eyebrow{font-size:9px}.close-button{width:34px;height:34px;font-size:24px}.prefecture-links{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.prefecture-link{padding:12px 9px;font-size:12px}.prefecture-group{margin-top:19px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Home-screen shortcut controls. */
.install-entry{margin-top:25px}.install-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;border:1px solid #d8dfdc;border-radius:9px;padding:10px 19px;color:var(--ink);background:white;font-size:13px;font-weight:650}.install-button>span{font-size:21px;color:var(--brand)}.install-button:hover{border-color:var(--brand)}.install-entry>p{font-size:10px;line-height:1.8;color:var(--muted);margin:8px 0 0}.line-browser-notice{max-width:1120px;margin:12px auto 0;padding:14px 18px;display:flex;gap:18px;justify-content:space-between;align-items:center;background:#fff3e0;border:1px solid #eed3a8;border-radius:9px}.line-browser-notice p{font-size:12px;line-height:1.8;margin:0}.line-browser-notice button{flex-shrink:0;min-height:44px;border:1px solid #d6bf9c;border-radius:7px;background:white;padding:8px 12px;color:var(--ink);font-size:12px}#install-dialog{width:min(600px,calc(100vw - 32px))}.install-guide{border-top:1px solid var(--line);margin-top:18px;padding-top:4px}.install-guide h3{font-size:15px;line-height:1.8}.install-guide ol{padding-left:24px;margin:12px 0}.install-guide li{padding-left:4px;margin:12px 0;font-size:13px;line-height:1.9}.install-guide p{font-size:12px;line-height:1.9;color:var(--muted)}.install-copy-help{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}.install-copy-help label{font-size:12px;font-weight:600}.install-url-row{display:flex;gap:8px;margin-top:10px}.install-url-row input{min-width:0;flex:1;border:1px solid #d5deda;border-radius:7px;padding:10px;font-size:16px;background:white;color:var(--ink)}.install-url-row button{min-height:44px;border:0;border-radius:7px;background:var(--brand);color:white;font-size:12px;padding:10px 12px;flex-shrink:0}#install-copy-status{font-size:12px;line-height:1.9;color:var(--muted)}#install-copy-status:empty{display:none}
@media(max-width:1200px){.line-browser-notice{margin-left:40px;margin-right:40px}}@media(max-width:760px){.install-entry{margin-top:22px}.line-browser-notice{margin:0 22px;display:block;padding:14px}.line-browser-notice button{margin-top:9px}.install-guide li{font-size:12px}.install-url-row{flex-wrap:wrap}.install-url-row input{width:100%;flex-basis:100%}}

.art-ring{border-color:#dce9fa}.art-dot{background:#8ab4e7}.logo-card{border-color:#dce9fa}