:root{color-scheme:light dark;--bg:#f5f7fb;--paper:#fff;--ink:#172033;--muted:#566273;--blue:#075fac;--tint:#e8f2fc;--line:#d5deea}
*{box-sizing:border-box}html{scroll-padding-top:1rem}body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Noto Sans JP",sans-serif;overflow-wrap:anywhere}a{color:var(--blue);text-underline-offset:.22em}a:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.topbar{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding:20px 0;border-bottom:1px solid var(--line)}.brand{font-weight:800;text-decoration:none}.language{display:flex;align-items:center;gap:8px}.language a,.language span{padding:8px 12px;font-size:.875rem}.language [aria-current]{background:var(--ink);color:var(--paper);border-radius:6px}.intro{padding:32px 0 20px}.eyebrow{color:var(--blue);font-size:.875rem;font-weight:750;letter-spacing:.08em;margin:0 0 6px}h1{font-size:clamp(2rem,5vw,3rem);line-height:1.35;margin:0 0 8px}p{margin:.55em 0}.meta{color:var(--muted);font-size:.875rem}.jump{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.jump a{padding:8px 14px;background:var(--paper);border:1px solid var(--line);border-radius:6px;text-decoration:none;font-size:.875rem}.jump a:hover{background:var(--tint)}.basics{border-left:4px solid var(--blue);background:var(--tint);padding:12px 16px;margin:0 0 24px}.tasks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--blue)}.task{padding:24px 28px;border-bottom:1px solid var(--line);min-width:0}.task:nth-child(odd){border-right:1px solid var(--line)}.task:nth-last-child(-n+2){border-bottom:0}.task-heading{display:flex;align-items:baseline;gap:12px}.number{font-size:.875rem;font-weight:750;color:var(--blue);font-variant-numeric:tabular-nums}h2{font-size:1.2rem;line-height:1.5;margin:0}.route{color:var(--blue);font-weight:700;margin:.7em 0}.tip{font-size:.875rem;color:var(--muted);margin-top:.7em}.detail{display:inline-block;min-height:44px;padding-top:10px;font-size:.875rem}.help{margin:24px 0 32px;padding:20px 24px;border-left:4px solid var(--blue);background:var(--tint)}footer{border-top:1px solid var(--line);padding:20px 0 30px;color:var(--muted);font-size:.875rem}footer nav{display:flex;gap:12px 24px;flex-wrap:wrap}footer a{padding:8px 0}.skip{position:absolute;left:20px;top:-100px;padding:12px;background:var(--paper);z-index:2}.skip:focus{top:8px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
@media(max-width:720px){.wrap{width:calc(100% - 24px)}.tasks{grid-template-columns:1fr}.task{padding:20px}.task:nth-child(odd){border-right:0}.task:nth-last-child(2){border-bottom:1px solid var(--line)}.intro{padding-top:24px}.help{padding:16px}.topbar{gap:8px}.language a,.language span{padding:8px}}
@media(prefers-color-scheme:dark){:root{--bg:#111820;--paper:#1d2732;--ink:#f4f7fb;--muted:#bac5d4;--blue:#80c4ff;--tint:#182f43;--line:#3e5064}}
@media print{@page{size:A4;margin:12mm}:root{color-scheme:light;--bg:#fff;--paper:#fff;--ink:#111;--muted:#333;--blue:#17456c;--tint:#fff;--line:#aaa}body{font-size:9pt;line-height:1.5}.wrap{width:100%}.language,.jump,.skip,.detail,footer{display:none}.topbar{padding:0 0 6pt}.intro{padding:10pt 0}.eyebrow,.meta,.tip,.number{font-size:8pt}h1{font-size:22pt}h2{font-size:11pt}.basics{padding:6pt 10pt;margin-bottom:10pt}.tasks{display:block;columns:2;column-gap:16pt;border:0}.task,.task:nth-child(odd),.task:nth-last-child(-n+2){break-inside:avoid;page-break-inside:avoid;border:0;border-top:1px solid var(--line);padding:10pt 0}.help{break-inside:avoid;margin:12pt 0 0;padding:8pt 10pt}a{color:inherit;text-decoration:none}}