:root,[data-theme]{--fk-ground: color-mix(in oklab, var(--fk-ground-1), var(--fk-ground-2));--fk-ground-gradient: linear-gradient(150deg, var(--fk-ground-1), var(--fk-ground-2));--fk-hair: color-mix(in srgb, var(--fk-ink) 14%, transparent);--fk-field-edge: color-mix(in oklab, var(--fk-ink) 55%, var(--fk-ground));--fk-icon-glass: var(--fk-accent);--fk-shade: oklch(from var(--fk-ground) calc(l - .4) calc(c/.4) h / .36);--fk-light: rgba(255, 255, 255, .95);--fk-relief: oklch(from var(--fk-ground) calc(l + .01) c h);--fk-sheen: linear-gradient(145deg, rgba(255, 255, 255, .5), rgba(255, 255, 255, 0) 62%);--fk-dent: linear-gradient(145deg, oklch(from var(--fk-ground) calc(l - .4) calc(c/.4) h / .1), rgba(255, 255, 255, .22));--fk-glass-fill: linear-gradient(135deg, rgba(255, 255, 255, .6), rgba(255, 255, 255, .24));--fk-glass-rim: linear-gradient(135deg, #fff, rgba(255, 255, 255, .5) 42%, rgba(255, 255, 255, .16));--fk-glass-top: inset 0 1px 0 rgba(255, 255, 255, .9);--fk-glass-cast: 0 30px 50px -24px oklch(from var(--fk-ground) calc(l - .46) calc(c/.4) h / .46);color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme]){--fk-shade: oklch(from var(--fk-ground) calc(l*.3) c h / .66);--fk-light: oklch(from var(--fk-ground) calc(l + .5) calc(c*2) h / .2);--fk-relief: oklch(from var(--fk-ground) calc(l + .03) c h);--fk-sheen: linear-gradient(145deg, oklch(from var(--fk-ground) calc(l + .6) calc(c*2) h / .12), rgba(255, 255, 255, 0) 62%);--fk-dent: linear-gradient(145deg, oklch(from var(--fk-ground) calc(l*.3) c h / .28), oklch(from var(--fk-ground) calc(l + .5) calc(c*2) h / .05));--fk-glass-fill: linear-gradient(135deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .04));--fk-glass-rim: linear-gradient(135deg, rgba(255, 255, 255, .5), rgba(255, 255, 255, .12) 42%, rgba(255, 255, 255, .04));--fk-glass-top: inset 0 1px 0 rgba(255, 255, 255, .14);--fk-glass-cast: 0 36px 60px -20px oklch(from var(--fk-ground) calc(l*.3) c h / .8);color-scheme:dark}}[data-theme=dark]{--fk-shade: oklch(from var(--fk-ground) calc(l*.3) c h / .66);--fk-light: oklch(from var(--fk-ground) calc(l + .5) calc(c*2) h / .2);--fk-relief: oklch(from var(--fk-ground) calc(l + .03) c h);--fk-sheen: linear-gradient(145deg, oklch(from var(--fk-ground) calc(l + .6) calc(c*2) h / .12), rgba(255, 255, 255, 0) 62%);--fk-dent: linear-gradient(145deg, oklch(from var(--fk-ground) calc(l*.3) c h / .28), oklch(from var(--fk-ground) calc(l + .5) calc(c*2) h / .05));--fk-glass-fill: linear-gradient(135deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .04));--fk-glass-rim: linear-gradient(135deg, rgba(255, 255, 255, .5), rgba(255, 255, 255, .12) 42%, rgba(255, 255, 255, .04));--fk-glass-top: inset 0 1px 0 rgba(255, 255, 255, .14);--fk-glass-cast: 0 36px 60px -20px oklch(from var(--fk-ground) calc(l*.3) c h / .8);color-scheme:dark}@supports not (color: oklch(from red l c h)){:root,[data-theme]{--fk-shade: color-mix(in srgb, color-mix(in oklab, var(--fk-ground) 45%, var(--fk-ink)) 36%, transparent);--fk-relief: color-mix(in oklab, var(--fk-ground) 96%, white);--fk-dent: linear-gradient(145deg, color-mix(in srgb, var(--fk-ink) 8%, transparent), rgba(255, 255, 255, .22));--fk-glass-cast: 0 30px 50px -24px color-mix(in srgb, var(--fk-ink) 40%, transparent)}@media(prefers-color-scheme:dark){:root:not([data-theme]){--fk-shade: rgba(0, 0, 0, .6);--fk-light: color-mix(in srgb, var(--fk-accent) 20%, transparent);--fk-relief: color-mix(in oklab, var(--fk-ground) 94%, white);--fk-sheen: linear-gradient(145deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, 0) 62%);--fk-dent: linear-gradient(145deg, rgba(0, 0, 0, .28), rgba(255, 255, 255, .03));--fk-glass-cast: 0 36px 60px -20px rgba(0, 0, 0, .8)}}[data-theme=dark]{--fk-shade: rgba(0, 0, 0, .6);--fk-light: color-mix(in srgb, var(--fk-accent) 20%, transparent);--fk-relief: color-mix(in oklab, var(--fk-ground) 94%, white);--fk-sheen: linear-gradient(145deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, 0) 62%);--fk-dent: linear-gradient(145deg, rgba(0, 0, 0, .28), rgba(255, 255, 255, .03));--fk-glass-cast: 0 36px 60px -20px rgba(0, 0, 0, .8)}}:root{--fk-space-1: 4px;--fk-space-2: 8px;--fk-space-3: 12px;--fk-space-4: 16px;--fk-space-6: 24px;--fk-space-8: 32px;--fk-radius-xs: 2px;--fk-radius-field: 14px;--fk-radius-button: 16px;--fk-radius-glass: 22px;--fk-radius-plate: 28px;--fk-radius-pill: 999px;--fk-icon-sm: 20px;--fk-icon-md: 24px;--fk-icon-lg: 32px;--fk-touch: 44px}:root{color-scheme:light;--fk-ground-1: #CFE8DD;--fk-ground-2: #E2E6D2;--fk-ink: #17261F;--fk-accent: #2E5B4A;--fk-on-accent: #FFFFFF;--bg: var(--fk-ground-gradient);--bg-flat: #D8E7D8;--ink: var(--fk-ink);--ink-soft: #31423A;--ink-mute: #44554C;--accent: var(--fk-accent);--accent-text: #2A5444;--accent-hover: #1F4034;--on-accent: var(--fk-on-accent);--gold: #6F440A;--error: #8A2F22;--hair: var(--fk-hair);--field: #5C7266;--sh-d: var(--fk-shade);--sh-l: var(--fk-light);--relief: var(--fk-relief);--sheen: var(--fk-sheen);--dent: var(--fk-dent);--fill: var(--fk-glass-fill);--rim: var(--fk-glass-rim);--cast: var(--fk-glass-cast);--top: var(--fk-glass-top);--k-tail: rgba(46, 91, 74, .88);--k-branch: rgba(104, 168, 138, .9);--k-rim: rgba(255, 255, 255, .7);--font-mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;--font-gothic: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;--gutter: 40px;--header-h: 84px}:root[data-theme=dark]{color-scheme:dark;--fk-ground-1: #06130D;--fk-ground-2: #143F2E;--fk-ink: #EEF2FC;--fk-accent: #A6D4BF;--fk-on-accent: #0C1F18;--bg-flat: #0D2A1E;--ink-soft: #CFE0D7;--ink-mute: #AFC6BA;--accent-text: #A6D4BF;--accent-hover: #C2E5D5;--gold: #F3D08C;--error: #F2B3A8;--field: #6F9080;--k-tail: rgba(166, 212, 191, .92);--k-branch: rgba(255, 255, 255, .62);--k-rim: rgba(255, 255, 255, .45)}@media(max-width:899px){:root{--gutter: 20px;--header-h: 76px}}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);-webkit-text-size-adjust:100%;background:var(--bg-flat)}body{margin:0;color:var(--ink);font-family:var(--font-gothic);font-size:16px;line-height:1.85;overflow-x:clip}body:before{content:"";position:fixed;inset:0;z-index:-1;background:var(--bg);pointer-events:none}img,svg{display:block;max-width:100%}a{color:var(--accent-text);text-underline-offset:4px}a:hover{color:var(--accent-hover)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}h1,h2,h3,h4,p{margin:0}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.skip-link{position:absolute;left:16px;top:-80px;z-index:100;padding:12px 20px;border-radius:12px;background:var(--accent);color:var(--on-accent);font-weight:700}.skip-link:focus{top:16px;color:var(--on-accent)}.mincho{font-family:var(--font-mincho);font-weight:700}.kw{word-break:keep-all;overflow-wrap:anywhere}.wrap{position:relative;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}.sec{position:relative;padding:40px 0 120px}.sec-title,.section-title{font-family:var(--font-mincho);font-weight:700;font-size:38px;line-height:1.5;letter-spacing:.03em}.sec-title{margin-bottom:48px}.kanji-num{font-family:var(--font-mincho);font-weight:700;color:var(--accent-text)}.up{background:var(--sheen);box-shadow:10px 10px 24px var(--sh-d),-10px -10px 24px var(--sh-l)}.up-s{background:var(--sheen);box-shadow:5px 5px 12px var(--sh-d),-5px -5px 12px var(--sh-l)}.down{background:var(--dent);box-shadow:inset 5px 5px 14px var(--sh-d),inset -5px -5px 14px var(--sh-l)}.groove{height:2px;margin:0;border:none;background:linear-gradient(var(--sh-d),var(--sh-d)) top / 100% 1px no-repeat,linear-gradient(var(--sh-l),var(--sh-l)) bottom / 100% 1px no-repeat}.g{position:relative;border-radius:22px;box-shadow:var(--cast)}.g-bd{position:absolute;inset:0;border-radius:inherit;background:var(--fill);box-shadow:var(--top);pointer-events:none;-webkit-backdrop-filter:blur(14px) saturate(150%);backdrop-filter:blur(14px) saturate(150%)}[data-theme=dark] .g-bd{-webkit-backdrop-filter:blur(14px) saturate(115%);backdrop-filter:blur(14px) saturate(115%)}.g:before{content:"";position:absolute;inset:0;z-index:2;border-radius:inherit;padding:1px;background:var(--rim);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box exclude,linear-gradient(#000 0 0);pointer-events:none}.g-in{position:relative;z-index:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:54px;padding:0 28px;border:none;border-radius:16px;background:var(--sheen);box-shadow:6px 6px 14px var(--sh-d),-6px -6px 14px var(--sh-l);color:var(--ink);font-family:inherit;font-size:16px;font-weight:700;text-decoration:none;cursor:pointer}.btn:hover{color:var(--accent-text)}.btn:active{background:var(--dent);box-shadow:inset 4px 4px 10px var(--sh-d),inset -4px -4px 10px var(--sh-l)}.btn-primary,.btn-primary:hover{background:var(--accent);color:var(--on-accent)}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:active{background:var(--accent-hover);box-shadow:inset 4px 4px 10px #00000040}.btn-small{min-height:44px;padding:0 20px;border-radius:14px;font-size:15px}.icon-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:none;border-radius:50%;background:var(--sheen);box-shadow:4px 4px 10px var(--sh-d),-4px -4px 10px var(--sh-l);color:var(--ink);cursor:pointer}.icon-btn:active{background:var(--dent);box-shadow:inset 3px 3px 8px var(--sh-d),inset -3px -3px 8px var(--sh-l)}.field{display:flex;flex-direction:column;gap:8px}.field label{font-size:14px;font-weight:700}.field input,.field textarea{width:100%;border:1px solid var(--field);border-radius:14px;background:var(--dent);box-shadow:inset 4px 4px 10px var(--sh-d),inset -4px -4px 10px var(--sh-l);color:var(--ink);font-family:inherit;font-size:16px}.field input{height:54px;padding:0 18px}.field textarea{height:136px;padding:14px 18px;resize:vertical;line-height:1.7}.field input:focus-visible,.field textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px}@media(max-width:899px){.sec{padding:24px 0 88px}.sec-title,.section-title{font-size:27px}.sec-title{margin-bottom:28px}.g-bd{-webkit-backdrop-filter:blur(10px) saturate(150%);backdrop-filter:blur(10px) saturate(150%)}[data-theme=dark] .g-bd{-webkit-backdrop-filter:blur(10px) saturate(115%);backdrop-filter:blur(10px) saturate(115%)}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media(prefers-reduced-transparency:reduce){.g-bd{background:#f0f7f1f2}[data-theme=dark] .g-bd{background:#102c20f2}}@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){.g-bd{background:#f0f7f1e6}[data-theme=dark] .g-bd{background:#102c20eb}}.sharp-mark[data-astro-cid-c2kwtahj]{flex-shrink:0;overflow:visible}.site-header[data-astro-cid-ctg3m53h]{position:sticky;top:16px;z-index:50;width:calc(100% - 32px);max-width:1200px;height:68px;margin:16px auto 0;border-radius:20px;box-shadow:0 16px 30px -18px var(--sh-d)}.bar[data-astro-cid-ctg3m53h]{height:100%;padding:0 12px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand[data-astro-cid-ctg3m53h]{display:flex;align-items:center;color:var(--ink);font-size:23px;letter-spacing:.06em;line-height:1;text-decoration:none}.wordmark[data-astro-cid-ctg3m53h]{display:inline-flex;align-items:center;gap:.14em}.nav[data-astro-cid-ctg3m53h] ul[data-astro-cid-ctg3m53h]{display:flex;align-items:center;gap:30px;margin:0;padding:0;list-style:none}.nav[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]{display:block;padding:10px 0;color:var(--ink);font-size:15px;text-decoration:none}.nav[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]:hover{color:var(--accent-text)}.nav-contact[data-astro-cid-ctg3m53h]{display:none}.tools[data-astro-cid-ctg3m53h]{display:flex;align-items:center;gap:10px}.menu-button[data-astro-cid-ctg3m53h],.theme-toggle[data-astro-cid-ctg3m53h] .icon-sun{display:none}[data-theme=dark] .theme-toggle[data-astro-cid-ctg3m53h] .icon-sun{display:block}[data-theme=dark] .theme-toggle[data-astro-cid-ctg3m53h] .icon-moon{display:none}@media(max-width:899px){.site-header[data-astro-cid-ctg3m53h]{height:60px;border-radius:18px}.bar[data-astro-cid-ctg3m53h]{padding:0 8px 0 20px}.brand[data-astro-cid-ctg3m53h]{font-size:20px}.header-cta[data-astro-cid-ctg3m53h]{display:none}.menu-button[data-astro-cid-ctg3m53h]{display:flex}.nav[data-astro-cid-ctg3m53h]{position:absolute;left:0;right:0;top:calc(100% + 8px);display:none;padding:8px 20px;border-radius:18px;background:var(--bg-flat);box-shadow:10px 10px 24px var(--sh-d),-6px -6px 18px var(--sh-l)}.nav[data-astro-cid-ctg3m53h].is-open{display:block}.nav[data-astro-cid-ctg3m53h] ul[data-astro-cid-ctg3m53h]{flex-direction:column;align-items:stretch;gap:0}.nav[data-astro-cid-ctg3m53h] li[data-astro-cid-ctg3m53h]+li[data-astro-cid-ctg3m53h]{border-top:1px solid var(--hair)}.nav[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]{padding:14px 4px;font-size:16px}.nav-contact[data-astro-cid-ctg3m53h]{display:block}.nav-contact[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]{color:var(--accent-text);font-weight:700}}.site-footer[data-astro-cid-gcn2mc3v]{position:relative}.inner[data-astro-cid-gcn2mc3v]{padding-top:32px;padding-bottom:44px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px;font-size:14px;color:var(--ink-mute)}ul[data-astro-cid-gcn2mc3v]{display:flex;flex-wrap:wrap;gap:8px 24px;margin:0;padding:0;list-style:none}a[data-astro-cid-gcn2mc3v]{display:block;padding:8px 0;color:var(--ink-soft);text-decoration:none}a[data-astro-cid-gcn2mc3v]:hover{color:var(--accent-text)}@media(max-width:899px){.inner[data-astro-cid-gcn2mc3v]{flex-direction:column;align-items:flex-start}}