:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--hm-bg:#fff;--hm-surface:#fff;--hm-surface-raised:#fff;--hm-surface-sunken:#f4f5f8;--hm-text:#1f1d24;--hm-text-secondary:#6b6775;--hm-text-muted:#8b8798;--hm-border:#e8e8ee;--hm-border-strong:2.5px;--hm-divider:#e8e8ee;--hm-brand-fill:#ff5b3a;--hm-brand-ledge:#d63e1f;--hm-brand-subtle:#ffede8;--hm-on-brand:#fff;--hm-brand-text:#b14e48;--hm-correct:#cb371c;--hm-correct-subtle:#fff0eb;--hm-correct-edge:#ffcdbf;--hm-incorrect:#3b5bdb;--hm-incorrect-ledge:#2a44b0;--hm-incorrect-subtle:#eef2ff;--hm-incorrect-edge:#c9d6ff;--hm-xp:#ffc233;--hm-xp-ledge:#b37a00;--hm-xp-subtle:#fff5d6;--hm-xp-edge:#ffe08a;--hm-xp-text:#8a5a00;--hm-ink:#1f1d24;--hm-on-ink:#fff;--hm-ink-ledge:#000;--hm-destructive:#bd2835;--hm-destructive-subtle:#fce8eb;--hm-on-destructive:#fff;--hm-scrim:#1f1d2473;--hm-ruby:var(--hm-text-secondary);--hm-assisted:var(--hm-xp-text);--hm-assisted-subtle:var(--hm-xp-subtle);--hm-selected:var(--hm-text);--hm-focus-ring:var(--hm-text);--hm-highlight:var(--hm-xp-subtle);--hm-srs-new:var(--hm-text-secondary);--hm-srs-learning:var(--hm-xp-text);--hm-srs-known:var(--hm-brand-fill);--hm-warning:var(--hm-xp-text);--hm-info:var(--hm-text);--hm-info-subtle:var(--hm-surface-sunken);--hm-heat1:var(--hm-xp-subtle);--hm-heat2:var(--hm-xp-edge);--hm-heat3:var(--hm-xp);--hm-spacing-s2:2px;--hm-spacing-s6:6px;--hm-spacing-s10:10px;--hm-spacing-s14:14px;--hm-spacing-s18:18px;--hm-spacing-s28:28px;--hm-spacing-page-margin:18px;--hm-spacing-page-margin-compact:16px;--hm-spacing-flow-margin:20px;--hm-spacing-card-padding-v:14px;--hm-spacing-card-padding-h:16px;--hm-radius-chip:12px;--hm-radius-tile:14px;--hm-radius-control:16px;--hm-radius-plan:18px;--hm-radius-card:20px;--hm-radius-hero:24px;--hm-radius-sheet:28px;--hm-border-standard:2px;--hm-height-button:52px;--hm-height-button-compact:48px;--hm-height-option:58px;--hm-height-kana-tile:62px;--hm-height-row:52px;--hm-height-tab:50px;--hm-height-segment:38px;--hm-breakpoint-compact:380px}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--hm-bg:#17161c;--hm-surface:#222029;--hm-surface-raised:#222029;--hm-surface-sunken:#121117;--hm-text:#f5f4f8;--hm-text-secondary:#b4b1be;--hm-text-muted:#8c8898;--hm-border:#36333f;--hm-border-strong:#6e6880;--hm-divider:#36333f;--hm-brand-fill:#ff6e4f;--hm-brand-ledge:#c9472c;--hm-brand-subtle:#3a1f1a;--hm-on-brand:#17161c;--hm-brand-text:#ffbaa3;--hm-correct:#ff8c72;--hm-correct-subtle:#3a1f1a;--hm-correct-edge:#5e332b;--hm-incorrect:#b3c3ff;--hm-incorrect-ledge:#5a73d6;--hm-incorrect-subtle:#1e2440;--hm-incorrect-edge:#3a4163;--hm-xp:#ffc233;--hm-xp-ledge:#a87510;--hm-xp-subtle:#3a3014;--hm-xp-edge:#977525;--hm-xp-text:#ffd66b;--hm-ink:#2a2632;--hm-on-ink:#f5f4f8;--hm-ink-ledge:#0c0a09;--hm-destructive:#ff8a99;--hm-destructive-subtle:#3a1a20;--hm-on-destructive:#17161c;--hm-scrim:#0009}}
@font-face{font-family:Nunito;src:url(/fonts/Nunito-Medium.woff2)format("woff2");font-weight:500;font-style:normal;font-display:swap}@font-face{font-family:Nunito;src:url(/fonts/Nunito-SemiBold.woff2)format("woff2");font-weight:600;font-style:normal;font-display:swap}@font-face{font-family:Nunito;src:url(/fonts/Nunito-Bold.woff2)format("woff2");font-weight:700;font-style:normal;font-display:swap}@font-face{font-family:Nunito;src:url(/fonts/Nunito-ExtraBold.woff2)format("woff2");font-weight:800;font-style:normal;font-display:swap}@font-face{font-family:Nunito;src:url(/fonts/Nunito-Black.woff2)format("woff2");font-weight:900;font-style:normal;font-display:swap}@font-face{font-family:Noto Sans JP;src:url(/fonts/NotoSansJP-Regular.woff2)format("woff2");font-weight:400 600;font-style:normal;font-display:swap;unicode-range:U+30??,U+31F?,U+3400-4DBF,U+4E00-9FFF,U+F900-FAFF,U+FF00-FFEF}@font-face{font-family:Noto Sans JP;src:url(/fonts/NotoSansJP-Bold.woff2)format("woff2");font-weight:700 900;font-style:normal;font-display:swap;unicode-range:U+30??,U+31F?,U+3400-4DBF,U+4E00-9FFF,U+F900-FAFF,U+FF00-FFEF}@font-face{font-family:Nunito Fallback;src:local(Arial Bold),local(Arial-BoldMT),local(Liberation Sans Bold),local(LiberationSans-Bold),local(Helvetica Bold),local(Arimo Bold);font-weight:100 650;size-adjust:96.1%;ascent-override:105.2%;descent-override:36.7%;line-gap-override:0%}@font-face{font-family:Nunito Fallback;src:local(Arial Bold),local(Arial-BoldMT),local(Liberation Sans Bold),local(LiberationSans-Bold),local(Helvetica Bold),local(Arimo Bold);font-weight:651 850;size-adjust:97.9%;ascent-override:103.3%;descent-override:36.1%;line-gap-override:0%}@font-face{font-family:Nunito Fallback;src:local(Arial Bold),local(Arial-BoldMT),local(Liberation Sans Bold),local(LiberationSans-Bold),local(Helvetica Bold),local(Arimo Bold);font-weight:851 1000;size-adjust:101.8%;ascent-override:99.3%;descent-override:34.7%;line-gap-override:0%}
:root{--hm-font-latin:"Nunito", "Nunito Fallback", "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;--hm-font-ja:"Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;--hm-content-width:72rem;--hm-prose-width:42rem;--hm-gutter:clamp(1rem, 4vw, 2rem);--hm-step--1:.9375rem;--hm-step-0:1.125rem;--hm-step-1:1.375rem;--hm-step-2:1.75rem;--hm-step-3:clamp(2.25rem, 5vw + 1rem, 3.5rem);--hm-focus:0 0 0 3px var(--hm-bg), 0 0 0 5px var(--hm-brand-text);--hm-wrap:1168px;--hm-wrap-gutter:24px;--hm-web-border-strong:#8f8b99;--hm-web-v-subtle:var(--hm-brand-subtle);--hm-web-ind-subtle:#edf0fc;--hm-bezel:#1f1d24}@media (prefers-color-scheme:dark){:root{--hm-web-border-strong:#6e6880;--hm-web-v-subtle:#5e332b;--hm-web-ind-subtle:#262c4a;--hm-bezel:#3a3843}}@media (max-width:767px){:root{--hm-step-0:1rem;--hm-wrap-gutter:16px}}*,:before,:after{box-sizing:border-box}html{-moz-text-size-adjust:100%;text-size-adjust:100%}body{background:var(--hm-bg);min-height:100vh;color:var(--hm-text);font-family:var(--hm-font-latin);font-size:var(--hm-step-0);-webkit-font-smoothing:antialiased;flex-direction:column;margin:0;font-weight:500;line-height:1.55;display:flex}main{flex:1 0 auto}:lang(ja){font-family:var(--hm-font-ja);line-break:strict}:lang(ja-Latn){font-family:var(--hm-font-latin)}h1,h2,h3{text-wrap:balance;margin:0 0 .5em;font-weight:900;line-height:1.2}h1{font-size:var(--hm-step-2)}h2{font-size:var(--hm-step-1)}h3{font-size:var(--hm-step-0)}p{margin:0 0 1em}a{color:var(--hm-brand-text);text-underline-offset:.18em;text-decoration-thickness:.08em}a:hover{text-decoration-thickness:.14em}:focus-visible{outline:2px solid var(--hm-brand-text);outline-offset:3px}img,svg{max-width:100%;height:auto}ruby rt{color:var(--hm-ruby);font-size:.5em}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.skip-link{z-index:10;background:var(--hm-text);color:var(--hm-bg);border-radius:12px;padding:.5rem 1rem;font-weight:700;position:absolute;top:-100px;left:1rem}.skip-link:focus{top:1rem}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.page-pad{padding-block:3rem 5rem}