@layer reset{*,:before,:after{box-sizing:border-box}html{color-scheme:light}body,h1,h2,h3,h4,p,ol,ul{margin:0}ol,ul{padding:0}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}}@layer tokens{:root{--color-paper-50:#fffdf9;--color-paper-100:#f7f5f0;--color-ink-900:#222824;--color-ink-600:#5c655e;--color-teal-700:#0e5a5a;--color-green-700:#2f6b4f;--color-ochre-800:#8b6714;--color-plum-700:#875251;--color-rule-300:#d9d5cb;--color-green-100:#e7f0e8;--color-ochre-100:#f6ecca;--color-plum-100:#f2e5e4;--color-bg:var(--color-paper-100);--color-surface:var(--color-paper-50);--color-text:var(--color-ink-900);--color-text-muted:var(--color-ink-600);--color-link:var(--color-teal-700);--color-border:var(--color-rule-300);--color-status-bought:var(--color-green-700);--color-status-considering:var(--color-ochre-800);--color-status-passed:var(--color-plum-700);--font-sans:"Noto Sans JP", system-ui, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, monospace;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-6:24px;--space-8:32px;--space-12:48px;--space-16:64px;--radius-sm:8px;--card-bg:var(--color-surface);--card-border:var(--color-border);--conclusion-card-accent:var(--color-link);--tag-bought-bg:var(--color-green-100);--tag-bought-text:#1f553c;--tag-considering-bg:var(--color-ochre-100);--tag-considering-text:#775600;--tag-passed-bg:var(--color-plum-100);--tag-passed-text:#703f3e}}@layer base{.prose{color:var(--color-text);font-size:1rem;line-height:1.8}.prose>*+*{margin-top:var(--space-6)}.prose :where(h2,h3,h4){color:var(--color-text);scroll-margin-top:var(--space-12);font-weight:700}.prose h2{margin-top:var(--space-16);font-size:clamp(1.35rem,3vw,1.5rem);line-height:1.5}.prose h3{margin-top:var(--space-12);font-size:1.1875rem;line-height:1.55}.prose p+p{margin-top:var(--space-6)}.prose :where(ul,ol){padding-left:1.4em}.prose li+li{margin-top:var(--space-2)}.prose blockquote{border-left:3px solid var(--color-border);color:var(--color-text-muted);padding-left:var(--space-4);margin-left:0}.prose hr{border:0;border-top:1px solid var(--color-border);margin-block:var(--space-12)}.prose :where(code,kbd){background:var(--color-surface);border:1px solid var(--color-border);font-family:var(--font-mono);border-radius:3px;padding:.1em .3em;font-size:.9em}.prose pre{background:var(--color-surface);border:1px solid var(--color-border);padding:var(--space-4);overflow-x:auto}.prose pre code{background:0 0;border:0;padding:0}.prose table{border-collapse:collapse;max-width:100%;display:block;overflow-x:auto}.prose th,.prose td{border-bottom:1px solid var(--color-border);padding:var(--space-3);text-align:left;vertical-align:top}.prose th{font-weight:700}@media (width>=768px){.prose{font-size:1.0625rem}}html{scroll-behavior:smooth}body{background:var(--color-bg);min-width:320px;color:var(--color-text);font-family:var(--font-sans);text-rendering:optimizelegibility;font-size:16px;line-height:1.8}a{color:var(--color-link);text-underline-offset:.18em;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--color-link);outline-offset:3px}::selection{background:var(--tag-considering-bg);color:var(--color-text)}}@layer layout{.site-shell{flex-direction:column;min-height:100svh;display:flex}.site-main{flex:1}.container{width:min(100% - 40px,1120px);margin-inline:auto}.reading-width{width:min(100%,720px)}.article-grid{gap:var(--space-8);align-items:start;display:grid}@media (width>=768px){.container{width:min(100% - 64px,1120px)}}@media (width>=1024px){.article-grid{grid-template-columns:minmax(0,720px) minmax(200px,240px);gap:min(7vw,96px)}}}@layer components{.page-shell{width:min(100% - 40px,1120px);padding-top:var(--space-12);margin-inline:auto}.page-shell>section+section{margin-top:var(--space-16)}.hero{border-bottom:1px solid var(--color-border);max-width:760px;padding-bottom:var(--space-12)}.hero h1{letter-spacing:-.055em;margin-top:var(--space-3);font-size:clamp(2.25rem,5vw,3.5rem);line-height:1.2}.hero-copy{margin-top:var(--space-6);max-width:35em;font-size:clamp(1.0625rem,2vw,1.25rem);line-height:1.8}.text-link{min-height:44px;margin-top:var(--space-4);align-items:center;font-weight:700;display:inline-flex}.section-heading{align-items:end;gap:var(--space-4);margin-bottom:var(--space-6);justify-content:space-between;display:flex}.section-heading h2,.method h2{margin-top:var(--space-1);font-size:clamp(1.5rem,3vw,2rem);line-height:1.35}.section-heading>a{white-space:nowrap;align-items:center;min-height:44px;font-size:.875rem;font-weight:700;display:inline-flex}.status-nav,.topic-nav{gap:var(--space-2);margin-bottom:var(--space-4);flex-wrap:wrap;display:flex}.status-nav a,.topic-nav a{border:1px solid var(--color-border);color:var(--color-text);min-height:44px;padding-inline:var(--space-4);border-radius:999px;align-items:center;font-size:.875rem;font-weight:700;text-decoration:none;display:inline-flex}.status-nav a:hover,.topic-nav a:hover{background:var(--color-surface);border-color:var(--color-link);color:var(--color-link)}.method{background:var(--color-surface);border-block:1px solid var(--color-border);padding:var(--space-8) var(--space-4)}.method ol{counter-reset:method;gap:var(--space-4);margin-top:var(--space-6);list-style:none;display:grid}.method li{border-top:1px solid var(--color-border);align-items:baseline;gap:var(--space-1);padding-top:var(--space-3);display:grid}.method strong{color:var(--color-link);font-size:.9375rem}.method span{color:var(--color-text-muted);font-size:.9375rem;line-height:1.65}.article-shell{width:min(100% - 40px,1120px);padding-top:var(--space-8);margin-inline:auto}.breadcrumbs{color:var(--color-text-muted);align-items:center;gap:var(--space-2);flex-wrap:wrap;font-size:.8125rem;display:flex}.breadcrumbs a{color:var(--color-text-muted)}.article-header{margin-top:var(--space-8);max-width:720px}.article-header h1{letter-spacing:-.035em;margin-top:var(--space-2);font-size:clamp(1.875rem,4.5vw,2.75rem);line-height:1.35}.article-description{color:var(--color-text-muted);margin-top:var(--space-4);font-size:1.0625rem;line-height:1.8}.article-meta{gap:var(--space-3) var(--space-6);margin-top:var(--space-6);flex-wrap:wrap;display:flex}.article-meta div{align-items:center;gap:var(--space-2);display:flex}.article-meta dt{color:var(--color-text-muted);font-size:.75rem;font-weight:700}.article-meta dd{margin:0;font-size:.8125rem}.experience-note{border-left:2px solid var(--color-border);color:var(--color-text-muted);margin-top:var(--space-4);padding-left:var(--space-3);font-size:.875rem;line-height:1.7}.article-shell>.decision-card{margin-top:var(--space-8);max-width:720px}.disclosure{color:var(--color-text-muted);margin-top:var(--space-3);max-width:720px;font-size:.8125rem;line-height:1.65}.article-content{margin-top:var(--space-12);max-width:720px;font-size:1rem;line-height:1.8}.article-content>*+*{margin-top:var(--space-6)}.article-content :is(h2,h3){scroll-margin-top:var(--space-12);line-height:1.5}.article-content h2{margin-top:var(--space-16);font-size:1.5rem}.article-content h3{margin-top:var(--space-12);font-size:1.1875rem}.article-content :is(ul,ol){padding-left:1.4em}.article-content li+li{margin-top:var(--space-2)}.article-content blockquote{border-left:3px solid var(--color-border);color:var(--color-text-muted);padding-left:var(--space-4);margin-left:0}.article-content :is(th,td){border-bottom:1px solid var(--color-border);padding:var(--space-3);text-align:left;vertical-align:top}.article-shell>:is(.decision-log,.next-check,.follow-ups,.update-history,.affiliate-links,.related-articles){max-width:720px}.next-check,.follow-ups{border-top:1px solid var(--color-border);margin-top:var(--space-8);padding-top:var(--space-6)}.next-check h2,.follow-ups h2{font-size:1.1875rem;line-height:1.5}.next-check p,.follow-ups ul{margin-top:var(--space-3)}.follow-ups ul{padding-left:1.3em}@media (width>=768px){.page-shell{width:min(100% - 64px,1120px);padding-top:var(--space-16)}.hero{padding-block:var(--space-8) var(--space-16)}.method{padding:var(--space-12)}.method ol{gap:var(--space-4);grid-template-columns:repeat(5,minmax(0,1fr))}.method li{min-height:116px}.article-shell{width:min(100% - 64px,1120px);padding-top:var(--space-12)}.article-content{font-size:1.0625rem}}}@layer utilities{.sr-only{clip:rect(0, 0, 0, 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.stack>*+*{margin-top:var(--stack-space,var(--space-4))}.eyebrow{color:var(--color-link);letter-spacing:.04em;font-size:.8125rem;font-weight:700;line-height:1.5}.meta{color:var(--color-text-muted);font-size:.8125rem;font-weight:500;line-height:1.5}.mono{font-family:var(--font-mono)}.rule-top{border-top:1px solid var(--color-border)}.rule-bottom{border-bottom:1px solid var(--color-border)}.section{padding-block:var(--space-12)}@media (width>=768px){.section{padding-block:var(--space-16)}}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.site-footer[data-astro-cid-oenwriqq]{border-top:1px solid var(--color-border);margin-top:var(--space-16);padding-block:var(--space-8)}.footer-inner[data-astro-cid-oenwriqq]{gap:var(--space-6);display:grid}.footer-brand[data-astro-cid-oenwriqq]{font-size:.9375rem;font-weight:700}.footer-note[data-astro-cid-oenwriqq]{color:var(--color-text-muted);margin-top:var(--space-1);font-size:.8125rem}nav[data-astro-cid-oenwriqq]{gap:var(--space-3) var(--space-6);flex-wrap:wrap;display:flex}nav[data-astro-cid-oenwriqq] a[data-astro-cid-oenwriqq]{color:var(--color-text);align-items:center;min-height:44px;font-size:.8125rem;display:inline-flex}@media (width>=768px){.footer-inner[data-astro-cid-oenwriqq]{grid-template-columns:1fr auto;align-items:end}}.site-header[data-astro-cid-isef26zo]{border-bottom:1px solid var(--color-border)}.header-inner[data-astro-cid-isef26zo]{justify-content:space-between;align-items:center;gap:var(--space-4);min-height:76px;display:flex}.brand[data-astro-cid-isef26zo]{color:var(--color-text);line-height:1.2;text-decoration:none;display:grid}.brand-mark[data-astro-cid-isef26zo]{letter-spacing:-.04em;font-size:1.25rem;font-weight:500}.brand-mark[data-astro-cid-isef26zo] strong[data-astro-cid-isef26zo]{font-weight:700}.brand-tagline[data-astro-cid-isef26zo]{color:var(--color-text-muted);letter-spacing:.02em;margin-top:3px;font-size:.6875rem}.desktop-nav[data-astro-cid-isef26zo]{gap:var(--space-4);align-items:center;display:none}.desktop-nav[data-astro-cid-isef26zo] a[data-astro-cid-isef26zo]{color:var(--color-text);border-bottom:2px solid #0000;align-items:center;min-height:44px;font-size:.8125rem;font-weight:700;text-decoration:none;display:inline-flex}.desktop-nav[data-astro-cid-isef26zo] a[data-astro-cid-isef26zo]:hover,.desktop-nav[data-astro-cid-isef26zo] a[data-astro-cid-isef26zo][aria-current=page]{color:var(--color-link);border-bottom-color:currentColor}.mobile-nav[data-astro-cid-isef26zo]{position:relative}.mobile-nav[data-astro-cid-isef26zo] summary[data-astro-cid-isef26zo]{color:var(--color-text);cursor:pointer;min-height:44px;padding-inline:var(--space-2);align-items:center;font-size:.8125rem;font-weight:700;list-style:none;display:flex}.mobile-nav[data-astro-cid-isef26zo] summary[data-astro-cid-isef26zo]::-webkit-details-marker{display:none}.mobile-nav[data-astro-cid-isef26zo][open] summary[data-astro-cid-isef26zo]{color:var(--color-link)}.mobile-nav[data-astro-cid-isef26zo] nav[data-astro-cid-isef26zo]{background:var(--color-surface);border:1px solid var(--color-border);min-width:190px;padding:var(--space-2);z-index:10;display:grid;position:absolute;top:calc(100% + 4px);right:0}.mobile-nav[data-astro-cid-isef26zo] nav[data-astro-cid-isef26zo] a[data-astro-cid-isef26zo]{color:var(--color-text);min-height:44px;padding:var(--space-3);font-size:.875rem;font-weight:700;text-decoration:none}.mobile-nav[data-astro-cid-isef26zo] nav[data-astro-cid-isef26zo] a[data-astro-cid-isef26zo]:hover,.mobile-nav[data-astro-cid-isef26zo] nav[data-astro-cid-isef26zo] a[data-astro-cid-isef26zo][aria-current=page]{background:var(--tag-considering-bg);color:var(--color-text)}@media (width>=900px){.desktop-nav[data-astro-cid-isef26zo]{display:flex}.mobile-nav[data-astro-cid-isef26zo]{display:none}}.skip-link[data-astro-cid-2qz4yijg]{background:var(--color-text);color:var(--color-surface);left:var(--space-4);padding:var(--space-3) var(--space-4);top:var(--space-2);z-index:100;transition:transform .16s;position:fixed;transform:translateY(-160%)}.skip-link[data-astro-cid-2qz4yijg]:focus{transform:translateY(0)}