500;600;700&family=Noto+Sans+JP:wght@400;500;600;700;800&display=swap');
:root{--bg:#f7f7f2;--paper:#fffefa;--ink:#252a25;--sub:#657069;--line:#dedfd7;--green:#315d45;--lightgreen:#e7eee6;--yellow:#f3d28e;--shadow:0 13px 38px rgba(37,53,41,.07)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.85 'DM Sans','Noto Sans JP',system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}.wrap{width:min(1080px,calc(100% - 40px));margin-inline:auto}.topbar{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.header{height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:17px;letter-spacing:.02em;white-space:nowrap}.brand-icon{width:37px;height:37px;border-radius:12px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:17px;line-height:1;transform:rotate(-7deg)}.nav{display:flex;gap:19px;align-items:center}.nav a{font-weight:600;color:#687169;font-size:12px;white-space:nowrap}.nav a:hover,.nav a[aria-current=page]{color:var(--green)}.nav-toggle{display:none;border:0;background:transparent;padding:10px;color:var(--green);cursor:pointer}.main{padding-bottom:70px}.hero{padding:55px 0 36px;position:relative}.eyebrow{color:var(--green);text-transform:uppercase;letter-spacing:.19em;font-size:11px;font-weight:800;margin-bottom:12px}.hero h1{font-size:clamp(32px,5.2vw,58px);line-height:1.34;letter-spacing:-.045em;margin:0 0 14px;font-weight:800}.hero h1 span{color:var(--green)}.intro{color:var(--sub);max-width:650px;margin:0;font-size:14px}.tagline{margin:14px 0 0;display:flex;gap:7px;flex-wrap:wrap}.tagline span{font-size:11px;border-radius:100px;border:1px solid #d5e0d5;background:#eef2eb;color:var(--green);padding:3px 11px;font-weight:600}.section{margin-top:44px}.sec-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:0 0 17px}.sec-head h2{font-size:24px;letter-spacing:-.035em;margin:0;line-height:1.5}.sec-head p{font-size:12px;margin:4px 0 0;color:var(--sub)}.sec-head .more{font-size:12px;font-weight:700;color:var(--green)}.feed{border-radius:19px;background:var(--paper);box-shadow:var(--shadow);border:1px solid var(--line);overflow:hidden}.feed-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:19px 23px;border-bottom:1px solid var(--line)}.feed-avatar{width:35px;height:35px;display:grid;place-items:center;color:white;background:var(--green);border-radius:50%;font-size:14px;font-weight:800}.feed-account{display:flex;align-items:center;gap:11px;font-size:12px;line-height:1.3}.feed-account strong{font-size:13px}.feed-account small{color:var(--sub)}.button{border-radius:100px;background:var(--green);color:#fff!important;padding:9px 16px;font-weight:700;font-size:11px;display:inline-flex;align-items:center;gap:7px;justify-content:center;transition:transform .2s,filter .2s}.button:hover{transform:translateY(-2px);filter:brightness(1.1)}.feed-inside{padding:13px 18px 8px;text-align:center;min-height:185px;max-height:480px;overflow:auto}.feed-inside .twitter-timeline{display:block;color:var(--green);padding:30px 0}.feed-foot{padding:10px 20px 14px;text-align:center;font-size:11px;color:var(--sub);background:#fbfbf8;border-top:1px solid var(--line)}.feed-foot a{text-decoration:underline;text-underline-offset:3px}.tile-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.tile{display:block;border:1px solid var(--line);background:var(--paper);padding:27px 27px 24px;border-radius:18px;min-height:188px;position:relative;transition:transform .2s,box-shadow .2s,border-color .2s}.tile:hover,.item-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#a0bdad}.tile-icon{font-size:25px;line-height:1;margin-bottom:19px}.tile h3{font-size:19px;margin:0 0 5px;letter-spacing:-.015em}.tile p{font-size:12px;line-height:1.8;color:var(--sub);margin:0;max-width:290px}.tile-arrow{position:absolute;right:23px;top:23px;color:var(--green);font-size:20px}.news-strip{background:#e8eee5;border:1px solid #d6e4d6;border-radius:16px;padding:19px 23px;display:flex;align-items:center;gap:17px;justify-content:space-between;margin-top:36px}.news-strip h3{font-size:14px;margin:0 0 2px}.news-strip p{font-size:12px;color:var(--sub);margin:0}.pagehead{padding:55px 0 22px}.pagehead h1{font-size:clamp(32px,4.5vw,46px);line-height:1.4;margin:0 0 9px;letter-spacing:-.04em}.pagehead p{max-width:680px;color:var(--sub);margin:0;font-size:14px}.items{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin-top:21px}.item-card{border:1px solid var(--line);background:var(--paper);border-radius:16px;padding:23px;display:flex;flex-direction:column;gap:6px;transition:transform .2s,box-shadow .2s,border-color .2s}.item-card .kicker{color:var(--green);font-size:10px;letter-spacing:.12em;text-transform:uppercase;font-weight:800}.item-card h2,.item-card h3{font-size:18px;margin:2px 0;line-height:1.6}.item-card p{font-size:12px;color:var(--sub);margin:0;flex:1}.item-card .action{font-size:12px;color:var(--green);margin-top:12px;font-weight:700}.item-card .muted{color:#959c95}.filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}.filter{border:1px solid var(--line);padding:5px 14px;border-radius:30px;background:white;font-size:12px;color:var(--sub);cursor:pointer}.filter[aria-pressed=true]{background:var(--green);border-color:var(--green);color:white}.readme-box{background:var(--lightgreen);border-radius:18px;padding:26px;margin:24px 0}.readme-box h2{font-size:17px;margin:0 0 4px}.readme-box p{font-size:13px;color:var(--sub);margin:0}.feature{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:28px;max-width:800px;margin-top:18px}.feature h2{margin:0 0 10px;font-size:21px}.feature p{font-size:14px;color:#586159}.feature a{color:var(--green);text-decoration:underline;text-underline-offset:4px}.foot{border-top:1px solid var(--line);padding:26px 0 32px}.foot-wrap{display:flex;justify-content:space-between;gap:12px;align-items:center}.foot p{font-size:11px;color:var(--sub);margin:0}.social{display:flex;gap:15px;font-size:12px;color:var(--green);font-weight:700}.mini{font-size:12px;color:var(--sub)}.empty{display:none;padding:25px;color:var(--sub)}@media(max-width:740px){.header{height:66px}.brand{font-size:15px}.brand-icon{width:33px;height:33px}.nav-toggle{display:block}.nav{display:none;position:absolute;top:66px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:12px 20px 19px;flex-direction:column;gap:0;align-items:stretch}.nav.open{display:flex}.nav a{font-size:14px;padding:10px}.hero{padding:42px 0 25px}.hero h1{font-size:37px}.section{margin-top:34px}.sec-head h2{font-size:21px}.tile-grid,.items{grid-template-columns:1fr}.tile{min-height:150px;padding:22px 24px}.tile-icon{margin-bottom:12px}.news-strip{align-items:flex-start;flex-direction:column}.feed-head{padding:15px}.feed-inside{padding:8px}.pagehead{padding-top:37px}.foot-wrap{flex-direction:column;align-items:start}}

.article-body{max-width:820px;line-height:2;white-space:normal}.article-body p{font-size:15px;margin:0 0 1.1em}.article-body h2{margin:1.6em 0 .45em;font-size:22px}.article-body h3{font-size:18px}.article-body ul{padding-left:1.5em}

/* BBS */
.retro-counter{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:16px;font-size:11px;color:var(--sub)}.fc2-counter{min-width:40px;display:inline-block;line-height:1}.fc2-counter img{vertical-align:middle}
.bbs-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start;margin-top:18px}.bbs-panel{background:var(--paper);border:1px solid var(--line);border-radius:17px;padding:23px}.bbs-form{display:flex;flex-direction:column;gap:13px}.bbs-label{font-weight:700;font-size:13px;display:grid;gap:5px}.bbs-label input,.bbs-label textarea,.bbs-admin input{display:block;width:100%;font:inherit;font-size:14px;border:1px solid #cfd9ce;border-radius:10px;background:#fff;color:var(--ink);padding:10px 12px;outline-offset:2px}.bbs-label textarea{resize:vertical;min-height:125px;line-height:1.7}.bbs-label small{font-weight:400;color:var(--sub)}.bbs-meta{font-size:12px;color:var(--sub)}.bbs-threads{display:grid;gap:14px}.bbs-post{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px;overflow-wrap:anywhere}.bbs-post.reply{border-radius:10px;padding:13px 16px;background:#f8fbf6;margin:8px 0 0 16px}.bbs-posthead{display:flex;justify-content:space-between;align-items:baseline;gap:9px;margin-bottom:8px;flex-wrap:wrap}.bbs-postname{font-weight:700;font-size:14px}.bbs-postdate{font-size:11px;color:var(--sub)}.bbs-posttext{font-size:14px;white-space:pre-wrap;line-height:1.85}.bbs-actions{display:flex;gap:12px;margin-top:8px;font-size:12px}.bbs-actions button{border:0;background:none;color:var(--green);font-weight:700;cursor:pointer;padding:3px 0}.bbs-postnumber{color:var(--sub);font-size:11px}.bbs-title{margin:0 0 7px;font-size:18px}.bbs-status{font-size:13px;color:var(--sub);margin:0 0 14px}.bbs-warning{border-radius:10px;border:1px solid #e8d7a0;background:#fff8e5;padding:12px;font-size:13px}.bbs-success{border-radius:10px;border:1px solid #cfe0ce;background:#e9f5e9;padding:12px;font-size:13px}.bbs-admin{margin-top:20px;font-size:12px;color:var(--sub)}.bbs-admin summary{cursor:pointer}.bbs-admin label{display:block;margin:10px 0}.bbs-controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.bbs-input-group{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.bbs-input-group .button{border:0;cursor:pointer}.bbs-loadmore{margin:20px 0 0}.bbs-honeypot{position:absolute;left:-10000px;top:-10000px}.bbs-privacy{font-size:11px;color:var(--sub)}@media(max-width:740px){.bbs-layout{grid-template-columns:1fr}.bbs-panel{padding:18px}.bbs-post{padding:17px}}

/* Homepage discovery and article navigation */
.home-section{margin-top:18px}.home-items{margin-top:0}.card-date{font-size:12px;color:var(--sub)}.article-back{margin:12px 0;font-size:14px}.article-back a,.home-section noscript a{text-decoration:underline;text-underline-offset:4px}.sec-head .more{white-space:nowrap}.item-card h2{overflow-wrap:anywhere}
@media(max-width:480px){.sec-head{align-items:flex-start;flex-wrap:wrap}.sec-head h2{font-size:22px}.card-date,.item-card p{font-size:13px}}

.preview-banner{padding:10px 20px;background:#fff1cc;border-bottom:1px solid #dfc88f;text-align:center;font-size:13px}.preview-banner a{text-decoration:underline;color:#315d45}