:root{--primary:#377657;--accent:#c34655;--bg:#f6f8f7;--card:#ffffff;
--text:#1f2328;--muted:#6b7280;--border:#dae7e0;--radius:8px;
--font-h:'Noto Sans JP', sans-serif;--font-b:'Noto Sans JP', sans-serif;--shadow:0 2px 12px rgba(0,0,0,.06);
--shadow-hover:0 10px 28px rgba(0,0,0,.10);--maxw:1120px;}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-b);line-height:1.9;font-size:16px;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
a{color:var(--primary)}
img{max-width:100%;height:auto}
h1,h2,h3,h4,h5{font-family:var(--font-h);line-height:1.45;letter-spacing:.01em;font-weight:700}
.inner{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.empty{color:var(--muted);padding:40px 0;text-align:center}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--card);border-bottom:1px solid var(--border);transition:box-shadow .2s}
.site-header.scrolled{box-shadow:0 2px 10px rgba(0,0,0,.08)}
.site-header .inner{padding-top:14px;padding-bottom:0}
.brand-row{display:flex;align-items:center;justify-content:space-between}
.site-header .brand{font-family:var(--font-h);font-size:1.55rem;font-weight:800;text-decoration:none;color:var(--text);line-height:1.2}
.site-header .tagline{margin:2px 0 8px;color:var(--muted);font-size:.82rem}
.site-nav{display:flex;align-items:center;gap:2px;flex-wrap:wrap;padding:2px 0 0}
.site-nav a{padding:9px 12px;text-decoration:none;color:var(--text);font-size:.92rem;border-bottom:3px solid transparent;white-space:nowrap}
.site-nav a:hover,.site-nav a.on{border-color:var(--accent);color:var(--primary)}
.nav-search{margin-left:auto;display:flex;align-items:center;border:1px solid var(--border);border-radius:999px;padding:2px 4px 2px 12px;background:var(--bg)}
.nav-search input{border:0;background:transparent;font-size:.85rem;width:150px;outline:0;color:var(--text);font-family:inherit}
.nav-search button{border:0;background:transparent;cursor:pointer;font-size:.95rem;padding:4px 6px;color:var(--muted)}
.nav-toggle{display:none}
.nav-burger{display:none;width:40px;height:40px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;align-items:center;border-radius:8px}
.nav-burger span{display:block;width:22px;height:2px;background:var(--text);transition:transform .25s,opacity .2s}
@media(max-width:760px){
  .nav-burger{display:flex}
  .site-header .tagline{display:none}
  .site-nav{display:none;flex-direction:column;align-items:stretch;padding:6px 0 10px;border-top:1px solid var(--border);margin-top:8px}
  .nav-toggle:checked ~ .tagline{display:none}
  .brand-row:has(.nav-toggle:checked) ~ .site-nav,.nav-toggle:checked ~ .site-nav{display:flex}
  .site-nav a{border-bottom:1px solid var(--border);padding:11px 4px}
  .nav-search{margin:10px 0 0;width:100%}.nav-search input{width:100%}
  .nav-toggle:checked + .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle:checked + .nav-burger span:nth-child(2){opacity:0}
  .nav-toggle:checked + .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:32px auto;padding:0 20px;display:grid;gap:40px}
main{min-width:0}
.sidebar{display:none}
.breadcrumb{font-size:.8rem;color:var(--muted);margin:0 0 16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.breadcrumb a{color:var(--muted);text-decoration:none}.breadcrumb a:hover{color:var(--primary)}
.page-title{font-size:1.8rem;margin:0 0 12px}
.page-title small{font-size:.9rem;color:var(--muted);font-weight:400;margin-left:8px}
.page-desc{color:var(--muted);margin:0 0 24px}
.section-title{font-size:1.3rem;margin:44px 0 18px;padding-left:14px;border-left:5px solid var(--primary);display:flex;align-items:center}
.section-title:first-child{margin-top:0}

/* ---------- featured ---------- */
.featured{display:grid;grid-template-columns:1.15fr 1fr;gap:0;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:8px}
.featured-thumb{display:flex;align-items:flex-end;min-height:260px;padding:24px;text-decoration:none;position:relative}
.featured-thumb .thumb-title{display:none}
.featured-body{padding:28px 30px;display:flex;flex-direction:column;justify-content:center}
.featured-body h2{font-size:1.45rem;margin:10px 0 12px}
.featured-body h2 a{color:var(--text);text-decoration:none}.featured-body h2 a:hover{color:var(--primary)}
.featured-body p{color:var(--muted);font-size:.95rem;margin:0 0 16px}
.more-link{font-weight:700;text-decoration:none}
@media(max-width:760px){.featured{grid-template-columns:1fr}.featured-thumb{min-height:180px}.featured-body{padding:20px}}

/* ---------- cards ---------- */
.post-grid{display:grid;gap:22px;grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:900px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.post-grid{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.thumb{display:flex;align-items:flex-end;aspect-ratio:16/9;padding:14px;text-decoration:none;position:relative;color:#fff}
.thumb::after,.featured-thumb::after,.post-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 35%,rgba(0,0,0,.45));pointer-events:none}
.thumb-cat{position:absolute;top:12px;left:12px;font-size:.7rem;padding:3px 10px;border-radius:999px;background:rgba(255,255,255,.92);color:#222;font-weight:700;z-index:1}
.thumb-title{position:relative;z-index:1;font-family:var(--font-h);font-weight:700;font-size:1.02rem;line-height:1.4;text-shadow:0 1px 6px rgba(0,0,0,.35);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.card h3{margin:0 0 8px;font-size:1.02rem;line-height:1.5}
.card h3 a{text-decoration:none;color:var(--text)}.card h3 a:hover{color:var(--primary)}
.card .excerpt{margin:0 0 12px;font-size:.86rem;color:var(--muted);flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card .meta{font-size:.76rem;color:var(--muted)}
.card .meta a{color:var(--muted);text-decoration:none}.card .meta a:hover{color:var(--primary)}
.badge{display:inline-block;font-size:.66rem;padding:1px 7px;border-radius:4px;background:var(--muted);color:#fff;margin-right:8px;vertical-align:middle;font-weight:700}
.cat-pill{display:inline-block;font-size:.74rem;padding:3px 11px;border-radius:999px;background:var(--primary);color:#fff;text-decoration:none;font-weight:700;margin-right:10px}
.pager{text-align:center;margin:28px 0 8px}
.pager a{display:inline-block;padding:11px 30px;border:1.5px solid var(--primary);border-radius:999px;text-decoration:none;font-weight:700;transition:background .2s,color .2s}
.pager a:hover{background:var(--primary);color:#fff}
.pager.small{text-align:right;margin:14px 0 0}.pager.small a{padding:6px 16px;font-size:.85rem;border-width:1px}
.pagination{display:flex;gap:6px;justify-content:center;margin:34px 0 0}
.pagination a,.pagination .cur{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius);border:1px solid var(--border);text-decoration:none;background:var(--card)}
.pagination .cur{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- article ---------- */
article.post .post-head .meta{color:var(--muted);font-size:.84rem;margin-bottom:12px;display:flex;flex-wrap:wrap;align-items:center;gap:4px}
article.post h1{font-size:1.85rem;margin:0 0 18px;line-height:1.4}
.post-hero{position:relative;aspect-ratio:21/9;border-radius:var(--radius);margin:0 0 20px;overflow:hidden;display:flex;align-items:flex-end;padding:22px;color:#fff}
.post-hero .thumb-title{font-size:1.25rem;-webkit-line-clamp:2}
.pr-notice{font-size:.8rem;color:var(--muted);background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;margin:0 0 24px}
.toc{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;margin:0 0 32px}
.toc-title{font-weight:700;font-family:var(--font-h);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.toc-title::before{content:"";display:inline-block;width:6px;height:18px;background:var(--primary);border-radius:3px}
.toc ol{margin:0;padding-left:1.4em;font-size:.92rem}.toc ol ol{font-size:.86rem;margin:4px 0 6px}
.toc li{margin:5px 0}.toc a{text-decoration:none;color:var(--text)}.toc a:hover{color:var(--primary);text-decoration:underline}
article.post .body{font-size:1.02rem}
article.post h2{font-size:1.42rem;margin:52px 0 20px;padding:12px 16px;background:var(--primary);color:#fff;border-radius:var(--radius)}
article.post h3{font-size:1.15rem;margin:36px 0 14px;padding:6px 0 6px 14px;border-left:5px solid var(--accent);border-bottom:1px solid var(--border)}
article.post h4{font-size:1.02rem;margin:26px 0 10px}
article.post p{margin:0 0 1.4em}
article.post .body>ul,article.post .body>ol{padding-left:1.4em;margin:0 0 1.4em}
article.post li{margin:.3em 0}
article.post blockquote{margin:1.6em 0;padding:16px 20px;background:var(--card);border:1px solid var(--border);border-left:5px solid var(--accent);border-radius:var(--radius);color:var(--text)}
article.post blockquote p{margin:0 0 .5em}article.post blockquote p:last-child{margin:0}
article.post blockquote ul{margin:.4em 0 0;padding-left:1.3em}
article.post table{border-collapse:collapse;width:100%;margin:1.6em 0;font-size:.92rem;display:block;overflow-x:auto;white-space:nowrap}
article.post th,article.post td{border:1px solid var(--border);padding:10px 14px;text-align:left;white-space:normal;min-width:110px}
article.post th{background:var(--primary);color:#fff;font-weight:700}
article.post tr:nth-child(even) td{background:rgba(0,0,0,.025)}
article.post code{background:rgba(0,0,0,.06);padding:2px 6px;border-radius:4px;font-size:.9em}
article.post pre{background:#1e1e26;color:#eee;padding:16px;border-radius:var(--radius);overflow-x:auto;font-size:.88rem}
article.post pre code{background:none;padding:0}
article.post hr{border:0;border-top:1px solid var(--border);margin:2em 0}
article.post strong{background:linear-gradient(transparent 62%,rgba(255,230,120,.55) 62%)}
article.post .body a{font-weight:600;text-decoration:underline;text-underline-offset:3px}
article.post .body p>a:only-child{display:block;text-align:center;margin:8px auto 14px;padding:14px 26px;background:var(--accent);color:#fff!important;text-decoration:none;border-radius:999px;font-weight:700;box-shadow:0 4px 0 rgba(0,0,0,.15);max-width:520px;transition:transform .15s,filter .15s}
article.post .body p>a:only-child:hover{filter:brightness(1.08);transform:translateY(-1px)}
.cta{display:inline-block;margin:6px 6px 14px 0;padding:12px 26px;background:var(--accent);color:#fff!important;text-decoration:none;border-radius:999px;font-weight:700;box-shadow:0 3px 0 rgba(0,0,0,.15)}
.cta.secondary{background:var(--primary)}
.disclosure{margin-top:36px;padding:12px 16px;font-size:.8rem;color:var(--muted);background:var(--card);border:1px dashed var(--border);border-radius:var(--radius)}
.share{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:28px 0 0;font-size:.85rem;color:var(--muted)}
.share a{display:inline-block;padding:7px 18px;border-radius:999px;color:#fff;text-decoration:none;font-weight:700;font-size:.82rem}
.share-x{background:#111}.share-line{background:#06c755}.share-hatena{background:#00a4de}.share-fb{background:#1877f2}
.author-box{margin-top:32px;padding:20px 22px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);display:flex;gap:16px;align-items:flex-start}
.author-box.big{margin:0 0 28px}
.avatar{width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.3rem;flex:none;font-family:var(--font-h);overflow:hidden}
.avatar img{width:100%;height:100%;object-fit:cover;display:block}
.author-box .name{font-weight:700}
.author-box p{margin:4px 0 6px;font-size:.88rem;color:var(--muted)}
.author-box a{font-size:.85rem;text-decoration:none;font-weight:700}
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
.prevnext a{display:block;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);text-decoration:none;color:var(--text);font-size:.9rem;font-weight:600;transition:border-color .2s}
.prevnext a:hover{border-color:var(--primary)}
.prevnext small{display:block;color:var(--muted);font-weight:400;font-size:.75rem;margin-bottom:4px}
.prevnext .next{text-align:right}
@media(max-width:560px){.prevnext{grid-template-columns:1fr}}
.related{margin-top:48px}
.search-form{display:flex;gap:10px;margin:0 0 28px;max-width:560px}
.search-form input{flex:1;padding:12px 16px;border:1px solid var(--border);border-radius:999px;font-size:1rem;font-family:inherit;background:var(--card);color:var(--text)}
.search-form .cta{margin:0}
.notfound{text-align:center;padding:40px 0}.notfound .code{font-size:5rem;font-weight:800;color:var(--primary);font-family:var(--font-h);line-height:1}

/* ---------- sidebar ---------- */
.side-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:22px;box-shadow:var(--shadow)}
.side-box h4{margin:0 0 12px;font-size:.98rem;padding-bottom:8px;border-bottom:2px solid var(--primary)}
.side-box ul{list-style:none;padding:0;margin:0}
.profile-box{text-align:center}.profile-box .avatar{margin:0 auto 8px;width:72px;height:72px;font-size:1.7rem}
.profile-box .name{font-weight:700}.profile-box p{font-size:.84rem;color:var(--muted);margin:6px 0 10px}
.side-link{font-size:.84rem;text-decoration:none;font-weight:700}
.side-search{display:flex;border:1px solid var(--border);border-radius:999px;overflow:hidden;background:var(--bg)}
.side-search input{flex:1;border:0;background:transparent;padding:8px 14px;font-size:.9rem;font-family:inherit;color:var(--text);outline:0}
.side-search button{border:0;background:transparent;cursor:pointer;padding:0 12px;color:var(--muted)}
.cat-list li a{display:flex;justify-content:space-between;padding:8px 2px;border-bottom:1px solid var(--border);text-decoration:none;color:var(--text);font-size:.9rem}
.cat-list li:last-child a{border:0}.cat-list li a:hover{color:var(--primary)}
.cat-list .count{color:var(--muted);font-size:.8rem}
.recent-list li a{display:flex;gap:10px;align-items:center;padding:8px 0;border-bottom:1px solid var(--border);text-decoration:none;color:var(--text);font-size:.86rem;line-height:1.45}
.recent-list li:last-child a{border:0}.recent-list li a:hover{color:var(--primary)}
.recent-list small{display:block;color:var(--muted);font-size:.74rem}
.mini-thumb{width:64px;height:44px;border-radius:6px;flex:none}

/* ---------- footer ---------- */
.site-footer{margin-top:70px;background:var(--text);color:#d5d8de;font-size:.86rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-top:44px;padding-bottom:30px}
.footer-brand{font-family:var(--font-h);font-size:1.3rem;font-weight:800;color:#fff;margin-bottom:6px}
.footer-writer{color:#9aa0ab}
.site-footer h5{color:#fff;margin:0 0 10px;font-size:.9rem;letter-spacing:.05em}
.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:5px 0}
.site-footer a{color:#d5d8de;text-decoration:none}.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer p{margin:0 0 8px;color:#b8bcc6}
.copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:16px;padding-bottom:22px;font-size:.78rem;color:#9aa0ab;text-align:center}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr;gap:22px}}
@media(max-width:760px){body{font-size:15.5px}article.post h1{font-size:1.45rem}article.post h2{font-size:1.22rem;margin-top:40px}.wrap{margin:20px auto;gap:28px}.page-title{font-size:1.45rem}}

html[data-theme=alt]{--bg:#131b17;--card:#1e2924;--text:#e8e9ee;--muted:#9aa0ab;--border:#304038;--primary:#69d39f;--shadow:0 2px 12px rgba(0,0,0,.35);--shadow-hover:0 10px 28px rgba(0,0,0,.5);color-scheme:dark}
html[data-theme=alt] .site-header{background:var(--card)}
html[data-theme=alt] .thumb-cat{background:rgba(0,0,0,.6);color:#fff}
html[data-theme=alt] article.post tr:nth-child(even) td{background:rgba(255,255,255,.04)}
html[data-theme=alt] article.post code{background:rgba(255,255,255,.1)}
html[data-theme=alt] article.post strong{background:linear-gradient(transparent 62%,rgba(255,255,255,.18) 62%)}
html[data-theme=alt] .site-footer{background:#0f1116}
.mode-toggle{margin-left:8px;width:36px;height:36px;border-radius:50%;border:1px solid var(--border);background:var(--card);color:var(--text);cursor:pointer;font-size:1rem;line-height:1;display:inline-flex;align-items:center;justify-content:center;flex:none}
.mode-toggle:hover{border-color:var(--primary);color:var(--primary);transform:rotate(15deg)}
.mode-toggle{transition:transform .2s,border-color .2s,color .2s}
.mode-toggle.spin{animation:modeFlip .28s cubic-bezier(.2,0,0,1)}
@keyframes modeFlip{0%{transform:rotate(0) scale(1)}45%{transform:rotate(90deg) scale(.4);opacity:0}55%{transform:rotate(-90deg) scale(.4);opacity:0}100%{transform:rotate(0) scale(1);opacity:1}}
html.theming,html.theming *{transition:background-color .18s ease,color .18s ease,border-color .18s ease!important}
.brand-row .right{display:flex;align-items:center;gap:4px}

.wrap{grid-template-columns:minmax(0,1fr) 320px}
.sidebar{display:block}
.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:900px){.wrap{grid-template-columns:1fr}.sidebar{display:block}}
@media(max-width:560px){.post-grid{grid-template-columns:1fr}}