:root{--c-bg: #ece6dc;--c-bg-soft: #f6f2ea;--c-bg-panel: #dfd6c8;--c-bg-white: #ffffff;--c-bg-ink: #1a1a14;--c-bg-ink-2: #26261e;--c-text: #2e2e26;--c-text-sub: #5f5f56;--c-muted: #8a8a7a;--c-line: #d5cfc2;--c-line-soft: #e4ded0;--c-accent: #90c31f;--c-accent-d: #5e8f13;--c-accent-xd: #4a7010;--c-accent-l: #e4f0cc;--c-accent-blue: #4a9eff;--c-ink: #1a1a14;--c-on-dark: rgba(236,230,220,.92);--c-on-dark-sub: rgba(236,230,220,.72);--c-on-dark-mute: rgba(236,230,220,.5);--c-on-dark-line: rgba(236,230,220,.12);--ff-base: "Noto Sans JP", "Yu Gothic", YuGothic, "Hiragino Sans", "Helvetica Neue", Arial, sans-serif;--ff-serif: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;--ff-mono: "Roboto Mono", "SF Mono", Menlo, Consolas, monospace;--ff-en: "Roboto Mono", "SF Mono", Menlo, monospace;--fs-xs: 12px;--fs-sm: 13px;--fs-md: 15px;--fs-lg: 17px;--fs-xl: 22px;--fs-2xl: 28px;--fs-3xl: 36px;--fs-4xl: 48px;--fs-hero: 56px;--lh-tight: 1.25;--lh-normal: 1.7;--lh-loose: 1.9;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-6: 24px;--sp-8: 32px;--sp-10: 40px;--sp-12: 48px;--sp-16: 64px;--sp-20: 80px;--sp-24: 96px;--sp-32: 128px;--container: 1120px;--container-narrow: 880px;--radius: 0;--radius-sm: 2px;--tr-fast: .15s ease;--tr-base: .25s ease}@media(max-width:768px){:root{--fs-hero: 32px;--fs-4xl: 28px;--fs-3xl: 24px;--fs-2xl: 20px;--sp-32: 80px;--sp-24: 64px;--sp-20: 56px;--sp-16: 48px}}.dl-form-wrap{padding:var(--sp-12) var(--sp-10);background:var(--c-bg-soft)}.dl-form-wrap__title{font-family:var(--ff-serif);font-size:22px;font-weight:500;margin-bottom:var(--sp-2)}.dl-form-wrap__note{color:var(--c-muted);font-size:var(--fs-xs);font-family:var(--ff-mono);margin-bottom:var(--sp-6);letter-spacing:.05em}.fld{margin-bottom:var(--sp-5)}.fld-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-6)}@media(max-width:600px){.fld-row{grid-template-columns:1fr;gap:0}}.fld label{display:block;font-size:var(--fs-sm);color:var(--c-text);margin-bottom:var(--sp-2);font-weight:600}.fld .req{color:#c33}.fld input[type=text],.fld input[type=email],.fld input[type=tel],.fld textarea,.fld select{width:100%;padding:12px 16px;font-size:var(--fs-md);font-family:inherit;border:1px solid var(--c-line);background:#fff;border-radius:0;outline:none;transition:border-color var(--tr-fast),box-shadow var(--tr-fast);color:var(--c-ink)}.fld input:focus,.fld textarea:focus,.fld select:focus{border-color:var(--c-accent-d);box-shadow:0 0 0 3px #90c31f2e}.fld textarea{min-height:160px;resize:vertical;line-height:1.7}.fld-check{display:flex;gap:var(--sp-3);align-items:flex-start;font-weight:400!important;cursor:pointer}.fld-check input[type=checkbox]{margin:3px 0 0;accent-color:var(--c-accent);width:16px;height:16px;cursor:pointer}.fld-check a{color:var(--c-accent-d);border-bottom:1px solid currentColor}.fld-check a:hover{color:var(--c-ink)}.dl-actions{margin-top:var(--sp-8);padding-top:var(--sp-6);border-top:1px solid var(--c-line)}.form-status{margin-top:var(--sp-6);padding:var(--sp-4) var(--sp-5);font-size:var(--fs-sm);line-height:1.7}.form-status.is-ok{background:var(--c-accent-l);border-left:3px solid var(--c-accent);color:var(--c-ink)}.form-status.is-err{background:#fef2f2;border-left:3px solid #c33;color:#933}.form-status:empty{display:none}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--ff-base);font-size:var(--fs-md);line-height:var(--lh-normal);color:var(--c-text);background:var(--c-bg);font-feature-settings:"palt" 1;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-family:var(--ff-serif);font-weight:500;line-height:var(--lh-tight);letter-spacing:-.01em;color:var(--c-ink);margin:0}p{margin:0}a{color:inherit;text-decoration:none;transition:color var(--tr-fast)}a:hover{color:var(--c-accent-d)}ul,ol{margin:0;padding:0;list-style:none}img,svg{display:block;max-width:100%;height:auto}.container{max-width:var(--container);margin:0 auto;padding:0 var(--sp-6)}.container-narrow{max-width:var(--container-narrow);margin:0 auto;padding:0 var(--sp-6)}.section{padding:var(--sp-24) 0}.section--soft{background:var(--c-bg-soft)}.section--panel{background:var(--c-bg-panel)}.section--dark{background:var(--c-bg-ink);color:var(--c-on-dark)}.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}.section--dark p{color:var(--c-on-dark-sub)}.sec-head{margin-bottom:var(--sp-12);display:flex;gap:var(--sp-6);align-items:baseline;flex-wrap:wrap}.sec-head__kicker{font-family:var(--ff-mono);font-size:var(--fs-xs);letter-spacing:.15em;color:var(--c-accent-d);font-weight:600}.sec-head__kicker:before{content:"— "}.sec-head__title{font-size:var(--fs-3xl);margin:0}.sec-head__lead{color:var(--c-text-sub);margin-top:var(--sp-4);max-width:720px;font-size:var(--fs-md)}.link-arrow{display:inline-flex;align-items:center;gap:var(--sp-2);font-weight:600;color:var(--c-ink);border-bottom:1px solid var(--c-ink);padding-bottom:2px}.link-arrow:after{content:"→";transition:transform var(--tr-fast)}.link-arrow:hover:after{transform:translate(4px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);padding:15px 30px;font-size:var(--fs-md);font-weight:700;letter-spacing:.02em;border-radius:var(--radius);border:none;cursor:pointer;transition:background var(--tr-fast),color var(--tr-fast),transform var(--tr-fast);text-decoration:none;line-height:1}.btn--primary{background:var(--c-accent);color:var(--c-ink)}.btn--primary:hover{background:var(--c-accent-d);color:#fff}.btn--ghost{background:var(--c-ink);color:#fff}.btn--ghost:hover{background:#000;color:var(--c-accent)}.section--dark .btn--ghost,.hero--constellation .btn--ghost{background:#ffffff1a;color:#fff}.section--dark .btn--ghost:hover,.hero--constellation .btn--ghost:hover{background:#ffffff2e;color:#fff}.fig{stroke:currentColor;fill:none;color:var(--c-text-sub)}.fig text{fill:currentColor;stroke:none;font-family:var(--ff-base);font-size:13px}.fig .accent{color:var(--c-accent-d)}.grid{display:grid;gap:var(--sp-6)}.grid--2{grid-template-columns:repeat(2,1fr)}.grid--3{grid-template-columns:repeat(3,1fr)}.grid--4{grid-template-columns:repeat(4,1fr)}.grid--5{grid-template-columns:repeat(5,1fr)}@media(max-width:900px){.grid--3,.grid--4,.grid--5{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.grid--2,.grid--3,.grid--4,.grid--5{grid-template-columns:1fr}}.term-tip{position:relative;display:inline;cursor:help;outline:none}.term-tip__label{border-bottom:1px dotted var(--c-accent-d)}.term-tip:after{content:"ⓘ";display:inline-block;font-size:.78em;margin:0 2px 0 3px;color:var(--c-accent-d);line-height:1;vertical-align:baseline}.term-tip__body{position:absolute;left:0;top:calc(100% + 6px);min-width:260px;max-width:360px;background:#fff;color:var(--c-ink);padding:14px 16px;box-shadow:0 14px 40px #0f120b2e;border-top:2px solid var(--c-accent);z-index:200;opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity .2s ease,transform .2s ease,visibility .2s;pointer-events:none;font-family:var(--ff-base);font-size:13px;font-weight:400;line-height:1.8;letter-spacing:0;text-align:left;white-space:normal;cursor:auto}.term-tip.is-open .term-tip__body{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}.term-tip__name{display:block;font-family:var(--ff-serif);font-weight:700;font-size:15px;color:var(--c-ink);margin-bottom:4px}.term-tip__alt{display:block;font-family:var(--ff-mono);font-size:11px;color:var(--c-accent-d);letter-spacing:.05em;margin-bottom:6px}.term-tip__desc{display:block;color:var(--c-text);margin-bottom:8px}.term-tip__link{display:inline-block;font-size:11px;font-family:var(--ff-mono);color:var(--c-accent-d);font-weight:600;letter-spacing:.05em;border-bottom:1px solid transparent}.term-tip__link:hover{border-bottom-color:currentColor}@media(max-width:600px){.term-tip__body{min-width:240px;max-width:min(90vw,320px)}}.site-header[data-astro-cid-ctg3m53h]{position:sticky;top:0;z-index:50;background:#ece6dce6;backdrop-filter:saturate(180%) blur(6px);border-bottom:1px solid var(--c-line)}.site-header__inner[data-astro-cid-ctg3m53h]{display:flex;align-items:center;justify-content:space-between;min-height:110px;padding:var(--sp-4) 0;gap:var(--sp-6)}.site-header__logo[data-astro-cid-ctg3m53h]{display:inline-flex;align-items:center;padding:var(--sp-2) 0}.site-header__logo[data-astro-cid-ctg3m53h] img[data-astro-cid-ctg3m53h]{height:70px;width:auto;display:block}@media(max-width:600px){.site-header__logo[data-astro-cid-ctg3m53h] img[data-astro-cid-ctg3m53h]{height:52px}.site-header__inner[data-astro-cid-ctg3m53h]{min-height:90px}}.site-header__nav[data-astro-cid-ctg3m53h] ul[data-astro-cid-ctg3m53h]{display:flex;gap:var(--sp-8)}.site-header__nav[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]{position:relative;font-size:13px;font-weight:600;letter-spacing:.05em;color:var(--c-text-sub);padding:8px 0}.site-header__nav[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]:hover,.site-header__nav[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h].is-active{color:var(--c-ink)}.site-header__nav[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h].is-active:after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--c-accent)}.site-header__nav[data-astro-cid-ctg3m53h] li[data-astro-cid-ctg3m53h].has-sub{position:relative}.site-header__nav[data-astro-cid-ctg3m53h] li[data-astro-cid-ctg3m53h].has-sub>a[data-astro-cid-ctg3m53h]:after{content:"▾";font-size:9px;margin-left:4px;color:var(--c-muted)}.sub-panel[data-astro-cid-ctg3m53h]{position:fixed;left:0;right:0;top:110px;background:#fffffffa;backdrop-filter:blur(10px);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);box-shadow:0 20px 40px #0f120b14;padding:var(--sp-10) 0;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .2s ease,transform .2s ease,visibility .2s}.site-header__nav[data-astro-cid-ctg3m53h] li[data-astro-cid-ctg3m53h].has-sub:hover>.sub-panel[data-astro-cid-ctg3m53h],.site-header__nav[data-astro-cid-ctg3m53h] li[data-astro-cid-ctg3m53h].has-sub:focus-within>.sub-panel[data-astro-cid-ctg3m53h]{opacity:1;visibility:visible;transform:translateY(0)}.sub-panel__inner[data-astro-cid-ctg3m53h]{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-10)}.sub-group__title[data-astro-cid-ctg3m53h]{padding-bottom:var(--sp-3);margin-bottom:var(--sp-4);border-bottom:1px solid var(--c-line)}.sub-group__en[data-astro-cid-ctg3m53h]{display:block;font-family:var(--ff-mono);font-size:18px;font-weight:500;letter-spacing:-.01em;color:var(--c-ink);margin-bottom:4px}.sub-group__ja[data-astro-cid-ctg3m53h]{display:block;font-size:11px;color:var(--c-muted);letter-spacing:.1em}.sub-group[data-astro-cid-ctg3m53h] ul[data-astro-cid-ctg3m53h]{display:flex;flex-direction:column;gap:0}.sub-group[data-astro-cid-ctg3m53h] li[data-astro-cid-ctg3m53h]{padding:0}.sub-group[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]{display:block;padding:10px 0;font-size:14px;color:var(--c-text);border-bottom:1px dashed var(--c-line-soft);font-weight:500}.sub-group[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]:hover{color:var(--c-accent-d);padding-left:6px}.site-drawer__row[data-astro-cid-ctg3m53h]{display:flex;align-items:stretch;border-bottom:1px solid var(--c-line-soft)}.site-drawer__row[data-astro-cid-ctg3m53h]>a[data-astro-cid-ctg3m53h]{flex:1;border-bottom:none!important}.site-drawer__toggle[data-astro-cid-ctg3m53h]{width:56px;background:transparent;border:none;border-left:1px solid var(--c-line-soft);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}.site-drawer__toggle-icon[data-astro-cid-ctg3m53h]{position:relative;width:14px;height:14px;display:block}.site-drawer__toggle-icon[data-astro-cid-ctg3m53h]:before,.site-drawer__toggle-icon[data-astro-cid-ctg3m53h]:after{content:"";position:absolute;background:var(--c-ink);top:50%;left:50%;transition:transform .2s ease}.site-drawer__toggle-icon[data-astro-cid-ctg3m53h]:before{width:14px;height:1.5px;transform:translate(-50%,-50%)}.site-drawer__toggle-icon[data-astro-cid-ctg3m53h]:after{width:1.5px;height:14px;transform:translate(-50%,-50%)}.site-drawer__toggle[data-astro-cid-ctg3m53h][aria-expanded=true] .site-drawer__toggle-icon[data-astro-cid-ctg3m53h]:after{transform:translate(-50%,-50%) scaleY(0)}.site-drawer__sub[data-astro-cid-ctg3m53h]{padding:var(--sp-3) var(--sp-8) var(--sp-5);background:var(--c-bg-soft)}.site-drawer__group[data-astro-cid-ctg3m53h]{padding:var(--sp-4) 0;border-bottom:1px solid var(--c-line-soft)}.site-drawer__group[data-astro-cid-ctg3m53h]:last-child{border-bottom:none}.site-drawer__group-label[data-astro-cid-ctg3m53h]{font-family:var(--ff-mono);font-size:11px;color:var(--c-muted);letter-spacing:.1em;margin:0 0 var(--sp-2)}.site-drawer__group[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]{display:block;padding:8px 0;font-size:14px;color:var(--c-text);border-bottom:none}.site-header__burger[data-astro-cid-ctg3m53h]{display:none;width:40px;height:40px;background:transparent;border:1px solid var(--c-line);padding:0;cursor:pointer;position:relative}.site-header__burger[data-astro-cid-ctg3m53h] span[data-astro-cid-ctg3m53h]{display:block;width:18px;height:1.5px;background:var(--c-ink);margin:4px auto}.site-drawer[data-astro-cid-ctg3m53h]{border-top:1px solid var(--c-line);background:var(--c-bg);max-height:calc(100vh - 110px);max-height:calc(100dvh - 110px);overflow-y:auto;-webkit-overflow-scrolling:touch}.site-drawer[data-astro-cid-ctg3m53h]>nav[data-astro-cid-ctg3m53h]>ul[data-astro-cid-ctg3m53h]{padding:var(--sp-4) 0}.site-drawer[data-astro-cid-ctg3m53h]>nav[data-astro-cid-ctg3m53h]>ul[data-astro-cid-ctg3m53h]>li[data-astro-cid-ctg3m53h]>.site-drawer__row[data-astro-cid-ctg3m53h]>a[data-astro-cid-ctg3m53h]{display:block;padding:14px var(--sp-6);font-size:var(--fs-md);font-weight:600;color:var(--c-ink)}@media(max-width:600px){.site-drawer[data-astro-cid-ctg3m53h]{max-height:calc(100vh - 90px);max-height:calc(100dvh - 90px)}}@media(max-width:900px){.site-header__nav[data-astro-cid-ctg3m53h]{display:none}.site-header__burger[data-astro-cid-ctg3m53h]{display:block}}.site-footer[data-astro-cid-gcn2mc3v]{background:var(--c-ink);color:#eaeaea;padding:var(--sp-16) 0 var(--sp-6)}.site-footer[data-astro-cid-gcn2mc3v] a[data-astro-cid-gcn2mc3v]{color:#cfcfcf}.site-footer[data-astro-cid-gcn2mc3v] a[data-astro-cid-gcn2mc3v]:hover{color:var(--c-accent)}.site-footer__brand-row[data-astro-cid-gcn2mc3v]{display:grid;grid-template-columns:1.2fr 1fr;gap:var(--sp-12);padding-bottom:var(--sp-10);border-bottom:1px solid #2a2a2a}@media(max-width:900px){.site-footer__brand-row[data-astro-cid-gcn2mc3v]{grid-template-columns:1fr;gap:var(--sp-8)}}.site-footer__logo[data-astro-cid-gcn2mc3v]{margin:0 0 var(--sp-3)}.site-footer__logo[data-astro-cid-gcn2mc3v] img[data-astro-cid-gcn2mc3v]{height:32px;width:auto;filter:brightness(0) invert(1);opacity:.92}.site-footer__ja[data-astro-cid-gcn2mc3v]{font-size:11px;color:#999;margin:0 0 var(--sp-3);letter-spacing:.1em}.site-footer__tagline[data-astro-cid-gcn2mc3v]{color:#888;font-size:13px;margin:var(--sp-3) 0 var(--sp-4);max-width:320px}.site-footer__contact[data-astro-cid-gcn2mc3v]{font-size:12px;color:#888;line-height:1.9;margin:0}.site-footer__primary[data-astro-cid-gcn2mc3v] ul[data-astro-cid-gcn2mc3v]{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-3) var(--sp-6)}.site-footer__primary[data-astro-cid-gcn2mc3v] li[data-astro-cid-gcn2mc3v]{font-size:var(--fs-sm);font-weight:600}.site-footer__sitemap[data-astro-cid-gcn2mc3v]{padding:var(--sp-10) 0;border-bottom:1px solid #2a2a2a}.site-footer__sitemap-label[data-astro-cid-gcn2mc3v]{font-family:var(--ff-mono);font-size:11px;letter-spacing:.15em;color:#888;margin:0 0 var(--sp-6)}.site-footer__groups[data-astro-cid-gcn2mc3v]{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-10)}@media(max-width:900px){.site-footer__groups[data-astro-cid-gcn2mc3v]{grid-template-columns:1fr;gap:var(--sp-8)}}.site-footer__group-title[data-astro-cid-gcn2mc3v]{padding-bottom:var(--sp-2);margin:0 0 var(--sp-4);border-bottom:1px solid #2a2a2a}.site-footer__group-en[data-astro-cid-gcn2mc3v]{display:block;font-family:var(--ff-mono);font-size:15px;color:#eaeaea;font-weight:500}.site-footer__group-ja[data-astro-cid-gcn2mc3v]{display:block;font-size:10px;color:#888;letter-spacing:.1em;margin-top:2px}.site-footer__offerings[data-astro-cid-gcn2mc3v]{display:flex;flex-direction:column;gap:var(--sp-4)}.site-footer__offering-link[data-astro-cid-gcn2mc3v]{font-size:13px;font-weight:600;color:#eaeaea!important}.site-footer__offering-link[data-astro-cid-gcn2mc3v]:hover{color:var(--c-accent)!important}.site-footer__sub[data-astro-cid-gcn2mc3v]{display:flex;flex-direction:column;gap:4px;margin-top:6px;padding-left:var(--sp-3);border-left:1px solid #2a2a2a}.site-footer__sub[data-astro-cid-gcn2mc3v] li[data-astro-cid-gcn2mc3v]{font-size:11px;line-height:1.6}.site-footer__sub[data-astro-cid-gcn2mc3v] a[data-astro-cid-gcn2mc3v]{color:#999!important}.site-footer__sub[data-astro-cid-gcn2mc3v] a[data-astro-cid-gcn2mc3v]:hover{color:var(--c-accent)!important}.site-footer__legal[data-astro-cid-gcn2mc3v]{padding:var(--sp-6) 0}.site-footer__legal[data-astro-cid-gcn2mc3v] ul[data-astro-cid-gcn2mc3v]{display:flex;flex-wrap:wrap;gap:var(--sp-6);font-size:12px}.site-footer__bottom[data-astro-cid-gcn2mc3v]{padding-top:var(--sp-4);font-size:12px;color:#666;border-top:1px solid #2a2a2a}.skip-to-main{position:absolute;left:-9999px;top:0}.skip-to-main:focus{left:8px;top:8px;background:var(--c-ink);color:#fff;padding:8px 12px;z-index:100}