:root{--ink: #1a1a1a;--ink-soft: #5c5850;--navy: #1b2a4a;--vermil: #b7282e;--rule: #d8d4cc;--paper: #ffffff;--field: #f3f1ec;--mincho: "Yu Mincho", "YuMincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;--gothic: "Yu Gothic", "YuGothic", "Hiragino Sans", "Noto Sans JP", sans-serif;--measure: 34rem}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--gothic);font-size:16px;line-height:1.85;color:var(--ink);background:var(--paper)}.wrap{max-width:64rem;margin:0 auto;padding:0 1.5rem}.masthead{display:flex;align-items:baseline;gap:1rem;padding:1.75rem 0 1.25rem;border-bottom:2px solid var(--navy)}.logo{font-family:var(--mincho);font-size:1.6rem;letter-spacing:.18em;color:var(--navy);margin:0}.logo .mark{color:var(--vermil)}.tagline{font-size:.85rem;color:var(--ink-soft);margin:0}.hero{padding:3.5rem 0 3rem}.lede{font-family:var(--mincho);font-size:clamp(1.5rem,4.2vw,2.3rem);line-height:1.6;margin:0 0 .75rem;max-width:26em;line-break:strict;word-break:normal;overflow-wrap:break-word}.lede-sub{max-width:var(--measure);color:var(--ink-soft);margin:0 0 2.5rem}.exchange{display:grid;grid-template-columns:1fr;gap:1.25rem;align-items:start}@media (min-width: 52rem){.exchange{grid-template-columns:1fr auto 1fr;gap:1.75rem}}.notice{font-family:var(--mincho);background:var(--paper);border:1px solid var(--rule);padding:1.5rem 1.4rem;font-size:.9rem;line-height:2;position:relative}.notice:after{content:"架空の見本";position:absolute;top:.8rem;right:.9rem;font-family:var(--gothic);font-size:.65rem;color:var(--vermil);border:1px solid var(--vermil);padding:.1rem .35rem}.notice h2{font-size:1rem;font-weight:400;letter-spacing:.25em;text-align:center;margin:.5rem 0 1.2rem;padding-bottom:.6rem;border-bottom:1px solid var(--ink)}.notice dl{display:grid;grid-template-columns:7em 1fr;gap:.35rem .8rem;margin:0}.notice dt{color:var(--ink-soft)}.notice dd{margin:0}.bridge{display:none;align-self:center;color:var(--navy)}@media (min-width: 52rem){.bridge{display:block}}.reading{background:var(--field);border-left:3px solid var(--navy);padding:1.5rem 1.4rem;font-size:.95rem}.reading .lang{font-size:.7rem;color:var(--ink-soft);margin:0 0 .9rem}.reading p{margin:0 0 1rem}.reading .deadline{font-size:1.35rem;color:var(--vermil);font-weight:700;line-height:1.3;margin:0 0 .2rem}.reading .deadline-note{font-size:.8rem;color:var(--ink-soft);margin:0 0 1.2rem}.reading ol{margin:0;padding-left:1.2rem}.reading li{margin-bottom:.5rem}.reading .cite{font-family:var(--mincho);font-size:.8rem;color:var(--ink-soft);border-top:1px solid var(--rule);margin-top:1.2rem;padding-top:.7rem}.band{border-top:1px solid var(--rule);padding:3rem 0}.band h2{font-family:var(--mincho);font-size:1.35rem;font-weight:400;margin:0 0 1.5rem;color:var(--navy)}.band p{max-width:var(--measure)}.rows{display:grid;gap:0;margin-top:1.5rem}.row{display:grid;grid-template-columns:1fr;gap:.3rem;padding:1.1rem 0;border-top:1px solid var(--rule)}.row:last-child{border-bottom:1px solid var(--rule)}@media (min-width: 42rem){.row{grid-template-columns:12rem 1fr;gap:1.5rem;align-items:baseline}}.row dt{font-family:var(--mincho);color:var(--navy);margin:0}.row dd{margin:0;color:var(--ink-soft)}.limit{border:1px solid var(--navy);padding:1.4rem 1.5rem;max-width:var(--measure)}.limit h3{font-family:var(--mincho);font-weight:400;margin:0 0 .6rem;font-size:1.05rem}.limit p{margin:0;font-size:.92rem}.cta{display:inline-block;margin-top:1.5rem}.cta a{display:inline-block;background:var(--navy);color:#fff;text-decoration:none;padding:.75rem 1.6rem;font-size:.95rem}.cta a:hover{background:var(--vermil)}.cta a:focus-visible{outline:3px solid var(--vermil);outline-offset:2px}.foot{border-top:2px solid var(--navy);padding:1.5rem 0 3rem;font-size:.82rem;color:var(--ink-soft)}.foot p{margin:0 0 .4rem;max-width:var(--measure)}.foot a{color:var(--navy)}@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}.langbar{display:flex;flex-wrap:wrap;gap:.35rem .9rem;padding:.9rem 0;border-bottom:1px solid var(--rule);font-size:.85rem}.langbar a{color:var(--navy);text-decoration:none;border-bottom:1px solid transparent;padding-bottom:1px}.langbar a:hover{border-bottom-color:var(--vermil)}.langbar a:focus-visible{outline:2px solid var(--vermil);outline-offset:3px}.langbar a[aria-current=page]{color:var(--vermil);border-bottom-color:var(--vermil)}.easy{line-height:2.4}.easy ruby{ruby-position:over}.easy rt{font-size:.5em;color:var(--ink-soft);font-weight:400;letter-spacing:0}.easy rp{display:none}.easy .say{display:block;margin-bottom:.6rem}.easy h1{font-family:var(--mincho);font-size:clamp(1.3rem,3.6vw,1.9rem);line-height:2.2;margin:0 0 1.2rem;word-break:normal;overflow-wrap:anywhere;line-break:strict}.easy h2{font-family:var(--mincho);font-size:1.2rem;font-weight:400;color:var(--navy);margin:0 0 1rem}.steps{counter-reset:s;list-style:none;padding:0;margin:1.5rem 0 0}.steps li{counter-increment:s;position:relative;padding:0 0 1.4rem 3rem;border-left:1px solid var(--rule);margin-left:1rem}.steps li:last-child{border-left-color:transparent;padding-bottom:0}.steps li:before{content:counter(s);position:absolute;left:-1rem;top:0;width:2rem;height:2rem;line-height:2rem;text-align:center;background:var(--navy);color:#fff;border-radius:50%;font-size:.9rem;font-family:var(--gothic)}.free{border:2px solid var(--navy);padding:1rem 1.2rem;margin:1.5rem 0;font-size:1.05rem}.native{line-height:1.9}.native h1{font-size:clamp(1.4rem,4vw,2.1rem);line-height:1.45;margin:0 0 1rem;font-family:var(--gothic);font-weight:700}.native .ja{font-family:var(--mincho);color:var(--ink-soft);font-size:.9em}
