:root{--paper: #f7f7f3;--paper-raised: #ffffff;--ink: #20242b;--ink-soft: #3a4048;--muted: #6a7076;--grid: #e4e6df;--line: #d8dad2;--accent: #a8352c;--accent-deep: #7f2620;--accent-wash: #f6e9e7;--font-body: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", system-ui, sans-serif;--font-mono: ui-monospace, "SFMono-Regular", "Consolas", "Menlo", monospace;--maxw: 42rem;--maxw-wide: 64rem}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink);font-family:var(--font-body);line-height:1.9;font-size:16px;-webkit-text-size-adjust:100%}body{margin:0;min-height:100svh;display:flex;flex-direction:column}main{flex:1;width:100%}h1,h2,h3,h4{line-height:1.45;letter-spacing:.01em;font-weight:800}h1{font-size:1.7rem;margin:.4em 0 .8em}h2{font-size:1.25rem;margin:2.4em 0 .8em;padding-left:.6em;border-left:4px solid var(--accent)}h3{font-size:1.05rem;margin:1.8em 0 .6em}a{color:var(--accent-deep);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}p{margin:1em 0}strong{font-weight:800}blockquote{margin:1.4em 0;padding:.7em 1em;border-left:3px solid var(--line);background:var(--paper-raised);color:var(--ink-soft);font-size:.95em}hr{border:0;border-top:1px solid var(--line);margin:2.5em 0}ul,ol{padding-left:1.5em}li{margin:.35em 0}code{font-family:var(--font-mono);font-size:.88em;color:var(--accent-deep);background:var(--accent-wash);padding:.1em .4em;border-radius:4px}pre{background:var(--paper-raised);border:1px solid var(--line);border-radius:6px;padding:1em;overflow-x:auto;line-height:1.6}pre code{background:none;color:var(--ink-soft);padding:0;font-size:.82rem}table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:.92em;background:var(--paper-raised)}th,td{border:1px solid var(--line);padding:.55em .75em;text-align:left;vertical-align:top}th{background:var(--paper);font-weight:800;white-space:nowrap}@media(max-width:640px){table{display:block;overflow-x:auto}}.container{max-width:var(--maxw);margin:0 auto;padding:0 1.1rem}.container-wide{max-width:var(--maxw-wide);margin:0 auto;padding:0 1.1rem}.gridbg{background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}.site-header{border-bottom:1px solid var(--line);background:var(--paper)}.site-header__inner{max-width:var(--maxw-wide);margin:0 auto;padding:.7rem 1.1rem;display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1.4rem}.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--ink)}.brand img{width:26px;height:26px}.brand__name{font-weight:900;font-size:1.05rem;letter-spacing:.02em}.brand__tag{font-size:.72rem;color:var(--muted);border:1px solid var(--line);padding:.1em .5em;border-radius:99px;white-space:nowrap}.site-nav{display:flex;flex-wrap:wrap;gap:.2rem 1rem;margin-left:auto;font-size:.88rem}.site-nav a{color:var(--ink-soft);text-decoration:none;padding:.2em 0}.site-nav a:hover{color:var(--accent)}.site-footer{border-top:1px solid var(--line);margin-top:4rem;padding:1.6rem 0 2.2rem;font-size:.8rem;color:var(--muted)}.site-footer .container-wide>p{margin:.4em 0}.site-footer a{color:var(--muted)}.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;margin:1.6rem 0 0;font-size:.78rem}.cat-chip{color:var(--ink-soft);border:1px solid var(--line);background:var(--paper-raised);padding:.15em .7em;border-radius:99px;text-decoration:none}.tag-chip{color:var(--accent-deep);border:1px solid transparent;background:var(--accent-wash);padding:.15em .7em;border-radius:99px;text-decoration:none}.tag-chip:hover{border-color:var(--accent-deep)}.stamp{font-family:var(--font-mono);border-radius:4px;padding:.12em .6em;letter-spacing:.04em;white-space:nowrap}.stamp--verified{color:var(--accent-deep);border:1.5px solid var(--accent-deep);background:var(--paper-raised);transform:rotate(-1.2deg)}.stamp--info{color:var(--accent-deep);background:var(--accent-wash);border:none}.draft-banner{margin:1.25rem 0 0;padding:.55rem .8rem;border:1px dashed var(--accent);border-radius:6px;background:var(--accent-wash);color:var(--accent-deep);font-size:.82rem;font-weight:800;text-align:center;letter-spacing:.04em}.toc{margin:1.6rem 0 2rem;padding:1rem 1.15rem;border:1px solid var(--line);border-radius:8px;background:var(--paper-raised)}.toc>strong{display:block;margin-bottom:.35rem}.toc ol{margin:0;padding-left:1.35rem;columns:2;column-gap:2rem}.toc li{break-inside:avoid;margin:.2rem 0;font-size:.9rem}.toc a{color:var(--ink-soft);text-decoration:none}.toc a:hover{color:var(--accent)}.key-answer{margin:1.4rem 0;padding:1rem 1.1rem;border:2px solid var(--accent-deep);border-radius:8px;background:var(--paper-raised);box-shadow:4px 4px 0 var(--accent-wash)}.key-answer p:first-child{margin-top:0}.key-answer p:last-child{margin-bottom:0}@media(max-width:640px){.toc ol{columns:1}}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(17rem,1fr));gap:.9rem;padding:0;margin:1.4rem 0;list-style:none}.card{border:1px solid var(--line);background:var(--paper-raised);border-radius:8px;padding:1rem 1.1rem}.card a{text-decoration:none;color:var(--ink);font-weight:800}.card a:hover{color:var(--accent)}.card p{margin:.45em 0 0;font-size:.85rem;color:var(--muted);line-height:1.7}.article-list{list-style:none;padding:0;margin:1rem 0}.article-list li{border-bottom:1px solid var(--line);padding:.85rem .2rem;margin:0}.article-list a{text-decoration:none;color:var(--ink);font-weight:700}.article-list a:hover{color:var(--accent)}.article-list p{margin:.3em 0 0;font-size:.85rem;color:var(--muted);line-height:1.7}.article-trust{margin-top:3rem;padding:1rem 1.15rem;border:1px solid var(--line);border-left:4px solid var(--accent-deep);border-radius:6px;background:var(--paper-raised)}.article-trust h2{margin:0 0 .7rem;padding:0;border:0;font-size:1rem}.article-trust dl{display:flex;flex-wrap:wrap;gap:.45rem 1.25rem;margin:0}.article-trust dl>div{display:flex;gap:.45rem}.article-trust dt{color:var(--muted);font-size:.76rem}.article-trust dd{margin:0;font-size:.76rem;font-weight:700}.article-trust p{margin:.75rem 0 0;color:var(--ink-soft);font-size:.78rem;line-height:1.7}.hero{border-bottom:1px solid var(--line);padding:3.2rem 0 2.8rem}.hero h1{font-size:clamp(1.5rem,4.5vw,2.1rem);font-weight:900;margin:0 0 .5em;letter-spacing:.01em}.hero h1 .accent{color:var(--accent)}.hero p{color:var(--ink-soft);max-width:34rem;margin:0}@media(prefers-reduced-motion:no-preference){a,.card{transition:color .15s ease}}.share{margin-top:1.5rem;text-align:center}.share-x{display:inline-block;border:1.5px solid var(--ink);background:var(--paper-raised);color:var(--ink);text-decoration:none;padding:.55em 1.3em;border-radius:6px;font-weight:800;font-size:.9rem}.share-x:hover{border-color:var(--accent);color:var(--accent)}:root{--maxw-wide: 74rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{position:sticky;top:0;z-index:20;background:#f7f7f3f5;backdrop-filter:blur(12px)}.site-header__inner{flex-wrap:nowrap}.site-nav{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;white-space:nowrap}.site-nav a[aria-current=page]{color:var(--accent-deep);font-weight:800}.hero--home{padding:clamp(3rem,7vw,6.2rem) 0 clamp(3rem,6vw,5rem)}.hero--home .container-wide{position:relative}.hero__eyebrow,.section-heading__eyebrow{margin:0 0 .45rem;color:var(--accent-deep);font-family:var(--font-mono);font-size:.72rem;font-weight:800;letter-spacing:.16em}.hero--home h1{max-width:14em;font-family:Yu Mincho,Hiragino Mincho ProN,serif;font-size:clamp(2rem,5.4vw,4.5rem);line-height:1.28;letter-spacing:-.025em}.hero--home .hero__lead{max-width:44rem;margin-top:1.4rem;font-size:clamp(.92rem,1.6vw,1.05rem)}.hero__actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.7rem}.button{display:inline-flex;align-items:center;justify-content:center;min-height:2.8rem;padding:.55rem 1.1rem;border:1px solid var(--ink);border-radius:4px;font-size:.86rem;font-weight:800;text-decoration:none}.button--primary{color:#fff;background:var(--ink)}.button--primary:hover{color:#fff;background:var(--accent-deep);border-color:var(--accent-deep)}.button--ghost{color:var(--ink);background:var(--paper-raised)}.home-shell{display:grid;grid-template-columns:15.5rem minmax(0,1fr);gap:clamp(2rem,5vw,4.5rem);align-items:start;padding-top:clamp(2.4rem,5vw,4.5rem)}.home-rail{position:sticky;top:5.2rem;padding:1.3rem;border-radius:7px;color:#f7f7f3;background:#23272e;box-shadow:0 12px 32px #14171c1f}.home-rail__block+.home-rail__block{margin-top:1.4rem;padding-top:1.25rem;border-top:1px solid #464b53}.home-rail__label{margin:0 0 .55rem;color:#aeb4bc;font-family:var(--font-mono);font-size:.67rem;font-weight:800;letter-spacing:.14em}.home-rail__nav{display:grid}.home-rail__nav a{display:flex;justify-content:space-between;gap:1rem;padding:.36rem 0;color:#f7f7f3;font-size:.82rem;font-weight:700;text-decoration:none}.home-rail__nav a:hover{color:#f0aaa3}.home-rail__tags{display:flex;flex-wrap:wrap;gap:.4rem}.home-rail__tags a{padding:.14rem .55rem;border:1px solid #555b64;border-radius:99px;color:#e8e9e5;font-size:.72rem;text-decoration:none}.home-rail__all-tags{display:inline-block;margin-top:.65rem;color:#d5d7d3;font-size:.72rem}.home-rail__start{display:grid;gap:.12rem;margin-top:1.4rem;padding:.8rem;border-left:3px solid #d35c51;color:#fff;background:#30353d;text-decoration:none}.home-rail__start span{color:#bfc3c8;font-size:.68rem}.home-rail__start strong{font-size:.82rem}.home-rail__count{margin:1rem 0 0;color:#afb4ba;font-size:.72rem}.home-rail__count strong{color:#fff;font-size:1rem}.home-content{min-width:0}.home-section{scroll-margin-top:5.5rem;margin-bottom:clamp(3.5rem,7vw,6.5rem)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:1rem;margin-bottom:1.25rem;padding-bottom:.8rem;border-bottom:2px solid var(--ink)}.section-heading h2{margin:0;padding:0;border:0;font-size:clamp(1.35rem,2.4vw,1.75rem)}.section-heading>a{font-size:.75rem;font-weight:700}.featured-article{position:relative;overflow:hidden;padding:clamp(1.4rem,4vw,2.5rem);border-radius:7px;color:#fff;background:#23272e}.featured-article:after{content:"";position:absolute;right:-4rem;bottom:-5rem;width:13rem;height:13rem;border:1px solid #555b64;border-radius:50%}.featured-article__meta{margin:0;color:#c9cdd1;font-family:var(--font-mono);font-size:.72rem}.featured-article h3{position:relative;z-index:1;max-width:27em;margin:.75rem 0;font-size:clamp(1.25rem,3vw,1.8rem)}.featured-article h3 a{color:#fff;text-decoration:none}.featured-article>p:not(.featured-article__meta){position:relative;z-index:1;max-width:42rem;color:#d4d6d8;font-size:.88rem}.featured-article__link{position:relative;z-index:1;display:inline-block;margin-top:.6rem;color:#f0aaa3;font-size:.8rem;font-weight:800}.recent-list{list-style:none;margin:1rem 0 0;padding:0}.recent-list li{display:grid;grid-template-columns:2.4rem minmax(0,1fr);gap:1rem;margin:0;padding:1.1rem 0;border-bottom:1px solid var(--line)}.recent-list__number{color:var(--accent-deep);font-family:var(--font-mono);font-size:.72rem;font-weight:800}.recent-list__meta{margin:0;color:var(--muted);font-size:.7rem}.recent-list h3{margin:.12rem 0 .25rem;font-size:1rem}.recent-list h3 a{color:var(--ink);text-decoration:none}.recent-list li>div>p:last-child{margin:0;color:var(--muted);font-size:.8rem;line-height:1.65}.home-starter-promo{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(16rem,.92fr);overflow:hidden;border:1px solid var(--line);border-radius:7px;background:var(--paper-raised);box-shadow:0 14px 34px #14171c14}.home-starter-promo__media{position:relative;min-height:100%;margin:0;overflow:hidden;background:#23272e}.home-starter-promo__media img{display:block;width:100%;height:100%;min-height:20rem;object-fit:cover}.home-starter-promo__media figcaption{position:absolute;right:.5rem;bottom:.45rem;padding:.18rem .42rem;border-radius:3px;color:#ffffffeb;background:#0f172ac7;font-size:.6rem}.home-starter-promo__body{display:flex;flex-direction:column;justify-content:center;padding:clamp(1.3rem,3vw,2.2rem)}.home-starter-promo__eyebrow{display:flex;align-items:center;gap:.65rem;margin-bottom:.65rem;color:var(--accent-deep);font-family:var(--font-mono);font-size:.68rem;font-weight:800;letter-spacing:.12em}.home-starter-promo h2{margin:0 0 .7rem;padding:0;border:0;font-size:clamp(1.3rem,2.5vw,1.75rem)}.home-starter-promo__body>p:not(.home-starter-promo__note){margin:0;color:var(--ink-soft);font-size:.84rem;line-height:1.75}.home-starter-promo__actions{display:grid;gap:.7rem;margin-top:1.2rem}.home-starter-promo__actions .button{justify-content:center;text-align:center}.home-starter-promo__amazon{display:inline-flex;align-items:center;justify-content:center;min-height:2.7rem;padding:.55rem .8rem;border:1px solid var(--accent-deep);border-radius:4px;color:var(--accent-deep);font-size:.75rem;font-weight:800;text-align:center;text-decoration:none}.home-starter-promo__amazon:hover{color:#fff;background:var(--accent-deep)}.home-starter-promo__note{margin:.7rem 0 0;color:var(--muted);font-size:.66rem;line-height:1.55}.home-index__result{color:var(--muted);font-family:var(--font-mono);font-size:.75rem}.home-index__tools{display:grid;gap:.7rem;margin-bottom:1rem}.home-search{display:flex;align-items:center;gap:.6rem;padding:0 .8rem;border:1px solid var(--line);border-radius:5px;background:var(--paper-raised)}.home-search input{width:100%;min-height:2.9rem;border:0;outline:0;color:var(--ink);background:transparent;font:inherit}.home-index__presets{display:flex;flex-wrap:wrap;gap:.4rem}.home-index__presets button{padding:.25rem .65rem;border:1px solid var(--line);border-radius:99px;color:var(--ink-soft);background:var(--paper-raised);cursor:pointer;font:inherit;font-size:.72rem}.home-index__presets button:hover{border-color:var(--accent);color:var(--accent-deep)}.home-index__list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.home-index__item{display:grid;grid-template-columns:8.5rem minmax(0,1fr) auto;gap:1rem;align-items:start;margin:0;padding:1rem 0;border-bottom:1px solid var(--line)}.home-index__item[hidden],.home-index__more[hidden],.home-index__empty[hidden]{display:none}.home-index__item-meta{display:flex;flex-wrap:wrap;gap:.3rem}.home-index__item-meta .cat-chip,.home-index__item-meta .tag-chip{font-size:.65rem}.home-index__item-body h3{margin:0 0 .25rem;font-size:.95rem}.home-index__item-body h3 a{color:var(--ink);text-decoration:none}.home-index__item-body p{margin:0;color:var(--muted);font-size:.77rem;line-height:1.6}.home-index__arrow{color:var(--muted)}.home-index__more{display:block;width:min(100%,20rem);margin:1.4rem auto 0;padding:.7rem 1rem;border:1px solid var(--ink);border-radius:4px;color:var(--ink);background:transparent;cursor:pointer;font:inherit;font-size:.82rem;font-weight:800}.home-index__empty{padding:2rem 0;color:var(--muted);text-align:center}.home-category-grid{margin-top:0}@media(max-width:900px){.site-header__inner{align-items:flex-start;flex-direction:column;gap:.45rem;padding-bottom:.5rem}.site-nav{width:100%;margin-left:0;padding-bottom:.2rem}.home-shell{grid-template-columns:1fr}.home-content{order:1}.home-rail{position:static;order:2;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.2rem}.home-rail__block+.home-rail__block{margin:0;padding:0;border:0}.home-rail__start,.home-rail__count{margin-top:0}}@media(max-width:600px){.brand__tag{display:none}.hero--home{padding:2.7rem 0 3rem}.hero--home h1{font-size:clamp(1.85rem,10vw,2.7rem)}.hero__actions .button{flex:1 1 auto}.home-shell{gap:1rem;padding-top:2.2rem}.home-rail{grid-template-columns:1fr;padding:1.1rem}.home-rail__block+.home-rail__block{padding-top:1rem;border-top:1px solid #464b53}.home-starter-promo{grid-template-columns:1fr}.home-starter-promo__media img{min-height:0;aspect-ratio:16 / 8}.home-starter-promo__body{padding:1.2rem}.section-heading{align-items:flex-end}.section-heading>a{max-width:9rem;text-align:right}.home-index__item{grid-template-columns:minmax(0,1fr) auto;gap:.5rem}.home-index__item-meta{grid-column:1 / -1}.home-index__item-body p{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2}.card-grid{grid-template-columns:1fr}}.affiliate-disclosure{padding:.7rem .85rem;border-left:3px solid var(--accent);color:var(--ink-soft);background:#d35c5114;font-size:.78rem}.affiliate-recommendations{margin:2.5rem 0;padding:clamp(1rem,3vw,1.5rem);border:1px solid var(--line);border-radius:7px;background:var(--paper-raised)}.affiliate-recommendations__heading{display:flex;align-items:center;gap:.65rem}.affiliate-recommendations__heading h2{margin:0;padding:0;border:0;font-size:1.12rem}.affiliate-recommendations__visual{position:relative;margin:1rem 0 0;overflow:hidden;border:1px solid var(--line);border-radius:5px;background:var(--paper)}.affiliate-recommendations__visual img{display:block;width:100%;height:auto;aspect-ratio:3 / 1;object-fit:cover}.affiliate-recommendations__visual figcaption{position:absolute;right:.5rem;bottom:.45rem;padding:.18rem .42rem;border-radius:3px;color:#ffffffeb;background:#0f172ac7;font-size:.62rem;line-height:1.35}.affiliate-label{display:inline-flex;padding:.14rem .48rem;border:1px solid var(--accent-deep);border-radius:3px;color:var(--accent-deep);font-size:.68rem;font-weight:800;line-height:1.2}.affiliate-recommendations__notice{margin:.65rem 0 1rem;color:var(--muted);font-size:.76rem}.affiliate-product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.affiliate-product-card{display:flex;flex-direction:column;padding:1rem;border:1px solid var(--line);border-radius:5px;background:var(--paper)}.affiliate-product-card h3{margin:0 0 .45rem;font-size:.95rem}.affiliate-product-card p{margin:0 0 .8rem;color:var(--muted);font-size:.78rem}.affiliate-product-card a{display:inline-flex;align-items:center;justify-content:center;min-height:2.6rem;margin-top:auto;padding:.5rem .75rem;border-radius:4px;color:#fff;background:var(--ink);font-size:.78rem;font-weight:800;text-decoration:none}.affiliate-product-card a:hover{color:#fff;background:var(--accent-deep)}.home-reading-guide{display:grid;grid-template-columns:minmax(7.5rem,.35fr) minmax(0,1fr);align-items:center;gap:clamp(1.2rem,4vw,2.5rem);padding:clamp(1.3rem,4vw,2rem);border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:7px;background:linear-gradient(135deg,var(--paper-raised),rgba(211,92,81,.08))}.home-reading-guide__mark{display:grid;min-height:8rem;place-items:center;border:1px solid var(--line);border-radius:5px;color:var(--paper-raised);background:var(--ink);font-family:Georgia,Times New Roman,serif;font-size:clamp(1rem,3vw,1.45rem);font-weight:800;letter-spacing:.14em}.home-reading-guide h2{margin:.15rem 0 .65rem}.home-reading-guide p:not(.section-heading__eyebrow){margin:0 0 1rem;color:var(--ink-soft)}.affiliate-recommendations--compact{margin:2rem 0;padding:1rem}.affiliate-recommendations--compact .affiliate-product-grid{grid-template-columns:1fr}.affiliate-recommendations--compact .affiliate-product-card{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:1rem;padding:.9rem}.affiliate-recommendations--compact .affiliate-product-card h3{margin-bottom:.3rem}.affiliate-recommendations--compact .affiliate-product-card p{margin-bottom:0}.affiliate-recommendations--compact .affiliate-product-card a{min-width:11rem;margin-top:0}@media(max-width:600px){.affiliate-recommendations__visual img{aspect-ratio:16 / 7}.affiliate-recommendations__visual figcaption{right:.35rem;bottom:.35rem;max-width:calc(100% - .7rem)}.affiliate-product-grid,.affiliate-recommendations--compact .affiliate-product-card{grid-template-columns:1fr}.affiliate-recommendations--compact .affiliate-product-card a{min-width:0}.home-reading-guide{grid-template-columns:1fr}.home-reading-guide__mark{min-height:4.5rem}}