.closed-document { scroll-behavior:auto; background:#d5e8ed; }
.closed-prototype {
  --paper:#d5e8ed; --panel:#fffef2; --ink:#24363f; --muted:#4a6069;
  --line:#7894a0; --accent:#124a9b; --radius:0;
  background:#d5e8ed url("paper-tile.svg") repeat;
  font-family:"MS PGothic","Osaka","Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
  font-size:16px; line-height:1.8; letter-spacing:0;
}
.closed-prototype .closed-shell { width:min(760px,calc(100% - 32px)); padding-bottom:24px; }
.closed-prototype a { color:#124a9b; text-decoration:underline; text-underline-offset:.15em; }
.closed-prototype a:visited { color:#694789; }
.closed-prototype a:hover { color:#8b2842; }
.closed-prototype :is(a,button,summary,[tabindex]):focus-visible { outline:3px solid #974119; outline-offset:3px; }
.closed-prototype .site-header { display:block; padding:7px 0 0; border:0; }
.closed-prototype .site-utility { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:3px 10px; margin-bottom:6px; color:#3d5864; font:12px/1.5 ui-monospace,"Courier New",monospace; }
.closed-prototype .back-link { display:inline-flex; align-items:center; min-height:44px; font-size:13px; }
.closed-prototype .motion-tools { display:flex; flex-wrap:wrap; align-items:center; justify-content:flex-end; gap:2px 8px; }
.closed-prototype #motion-toggle { min-height:44px; padding:6px 10px; border:3px outset #9aadb4; border-radius:0; background:#eff3e9; color:#263f63; font-size:13px; text-decoration:none; }
.closed-prototype #motion-status { font-size:11px; }
.closed-prototype .notice-strip { overflow:hidden; border:3px double #698491; background:#edf4d8; margin-bottom:10px; }
.closed-prototype .notice-track { display:flex; width:110em; margin:0; color:#344954; font:13px/1.8 ui-monospace,"Courier New",monospace; white-space:nowrap;  }
.closed-prototype .notice-track > span { flex:0 0 55em; padding-right:3em; }
.closed-prototype .retro-top { display:grid; grid-template-columns:minmax(0,440px) 110px minmax(0,1fr); gap:12px; align-items:start; }
.closed-prototype .site-sign { position:relative; min-width:0; height:324px; border:8px double #637d9e; background:#e7e5c9; box-shadow:inset 3px 3px #fffbe4,inset -3px -3px #a9b2af; overflow:hidden; }
.closed-prototype .sign-decoration { position:absolute; inset:0; overflow:hidden; }
.closed-prototype .sign-window { position:absolute; right:25px; top:30px; width:152px; height:196px; border:6px outset #abc1b9; background:repeating-linear-gradient(90deg,transparent 0 19px,#8299a31f 19px 20px),repeating-linear-gradient(0deg,transparent 0 19px,#8299a31f 19px 20px); transform:rotate(9deg); }
.closed-prototype .sign-diamond { position:absolute; right:1px; bottom:27px; color:#647397; font:140px/1 Georgia,serif; filter:blur(.4px); transform:rotate(-14deg); }
.closed-prototype .sign-word { position:absolute; display:block; color:#304e75; font-family:"Arial Black","Yu Gothic",sans-serif; font-weight:900; line-height:1.15; white-space:nowrap; -webkit-text-stroke:2px #fffbe7; paint-order:stroke fill; text-shadow:3px 3px #93aab2; }
.closed-prototype .sign-word-one { top:57px; left:15px; font-size:70px; transform-origin:left center;  }
.closed-prototype .sign-word-two { top:135px; left:110px; font-size:42px; color:#52644c; -webkit-text-stroke:1px #fffbe7; }
.closed-prototype .sign-word-three { bottom:38px; left:29px; font-size:60px; color:#573e69; }
.closed-prototype .site-menu { display:grid; gap:7px; min-width:0; }
.closed-prototype .site-menu h2 { margin:0; color:#465e67; text-align:center; font:18px/1.2 "MS Mincho","Yu Mincho",serif; letter-spacing:.1em; }
.closed-prototype .nav-entry { display:flex; align-items:center; justify-content:center; min-height:50px; padding:6px 5px; border:4px solid #708e94; border-radius:20px / 32px; background:#dce9d2; box-shadow:0 0 5px #7b9cab,inset 1px 1px #fffbe7; text-align:center; font:18px/1.2 "MS Mincho","Yu Mincho",serif; overflow-wrap:anywhere; }
.closed-prototype .nav-entry:visited { color:#694789; }
.closed-prototype .nav-entry:hover { background:#314f68; color:#fffbe7; border-color:#b8c5aa; }
.closed-prototype .welcome-box { min-width:0; border:3px outset #aac2c7; padding:8px 8px 4px; background:#eaf3e9; font-family:"MS Mincho","Yu Mincho",serif; }
.closed-prototype .welcome-box h2 { margin:0 0 8px; color:#314f68; font-size:24px; line-height:1.1; font-weight:600; }
.closed-prototype .welcome-box > p { margin:0 0 10px; font-size:13px; line-height:1.6; }
.closed-prototype .site-facts { display:grid; grid-template-columns:2em minmax(0,1fr); gap:4px 5px; margin:0 0 9px; padding-top:7px; border-top:3px double #91a8ac; font:11px/1.6 ui-monospace,"Courier New",monospace; }
.closed-prototype .site-facts dt,.closed-prototype .site-facts dd { margin:0; }
.closed-prototype .review-note { margin:0; padding:0; border-top:1px dotted #7894a0; color:#435963; }
.closed-prototype .review-note summary { min-height:44px; padding:5px 0; font:12px/1.6 "MS PGothic","Yu Gothic",sans-serif; cursor:pointer; }
.closed-prototype .review-note p { margin:0 0 9px; font:12px/1.7 "MS PGothic","Yu Gothic",sans-serif; }
.closed-prototype .site-announcement { margin:13px 0 14px; padding:9px 10px 7px; border:8px outset #a5b6bd; background:#edf0cd; text-align:center;  }
.closed-prototype .site-announcement h2 { margin:0 0 6px; color:#3b526d; font:600 clamp(20px,4vw,28px)/1.15 "MS Mincho","Yu Mincho",serif; }
.closed-prototype .site-announcement p { display:flex; flex-wrap:wrap; justify-content:center; align-items:baseline; gap:3px 10px; margin:0; }
.closed-prototype .announcement-label { padding:1px 4px; border:3px double #7c8e93; color:#445f67; font:12px/1.5 ui-monospace,"Courier New",monospace; }
.closed-prototype .announcement-work { color:#563d64; font:600 23px/1.3 "MS Mincho","Yu Mincho",serif; }
.closed-prototype #main-content { min-width:0; }
.closed-prototype .article-card { margin:0; padding:22px 26px; border:3px double #688592; border-radius:0; background:#fffef2; box-shadow:3px 3px #aabec4; }
.closed-prototype .article-header { margin-bottom:1.5rem; padding-bottom:1rem; border-bottom:1px dotted #7894a0; }
.closed-prototype .article-meta { display:flex; flex-wrap:wrap; justify-content:space-between; gap:4px 14px; margin:0 0 1rem; color:#526771; font:12px/1.6 ui-monospace,"Courier New",monospace; }
.closed-prototype .article-card h1 { margin:0 0 .7rem; color:#243d65; font:600 clamp(24px,5vw,32px)/1.5 "MS Mincho","Yu Mincho",serif; letter-spacing:.08em; text-align:center; }
.closed-prototype .article-deck { margin:0; color:#4a6069; font-size:14px; line-height:1.9; text-align:center; }
.closed-prototype .article-copy { font-size:16px; line-height:2; overflow-wrap:anywhere; }
.closed-prototype .article-copy p { margin:0 0 1.5rem; }
.closed-prototype .article-copy p:last-child { margin-bottom:0; }
.closed-prototype .article-destination { display:flex; flex-direction:column; align-items:center; gap:12px; margin-top:1.7rem; padding-top:1.2rem; border-top:1px dotted #7894a0; text-align:center; }
.closed-prototype .destination-label { color:#526771; font-size:12px; letter-spacing:.13em; }
.closed-prototype button,.closed-prototype .button { min-height:44px; padding:8px 18px; border:3px outset #a2b5ba; border-radius:0; background:#e4eee8; color:#124a9b; font-size:14px; line-height:1.7; text-decoration:underline; text-underline-offset:.15em; cursor:pointer; touch-action:manipulation; }
.closed-prototype button:hover,.closed-prototype .button:hover { background:#f5eed5; color:#8b2842; filter:none; }
.closed-prototype .prototype-footer { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:8px 15px; margin-top:18px; padding-top:12px; border-top:3px double #7894a0; color:#435963; font:12px/1.6 ui-monospace,"Courier New",monospace; }
.closed-prototype [hidden] { display:none !important; }
@media(max-width:720px) {
  .closed-prototype .site-utility { gap:3px 8px; }
  .closed-prototype .motion-tools { flex:1 1 100%; justify-content:space-between; margin-bottom:3px; }
  .closed-prototype .retro-top { grid-template-columns:minmax(0,1fr) 88px; gap:10px; }
  .closed-prototype .site-sign { height:324px; }
  .closed-prototype .sign-window { top:42px; right:9px; width:116px; height:180px; }
  .closed-prototype .sign-word-one { top:60px; left:9px; font-size:58px; }
  .closed-prototype .sign-word-two { top:127px; left:26px; font-size:35px; }
  .closed-prototype .sign-word-three { bottom:39px; left:12px; font-size:52px; }
  .closed-prototype .sign-diamond { right:-14px; bottom:35px; font-size:115px; }
  .closed-prototype .nav-entry { min-height:50px; padding:7px 3px; }
  .closed-prototype .welcome-box { grid-column:1 / -1; display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); gap:3px 12px; padding:10px; }
  .closed-prototype .welcome-box h2 { margin:0 0 2px; font-size:22px; }
  .closed-prototype .welcome-box > p { grid-column:1; margin:0; font-size:13px; }
  .closed-prototype .site-facts { grid-column:2; grid-row:1 / 3; align-self:start; margin:0; padding:0 0 0 10px; border-top:0; border-left:3px double #91a8ac; font-size:11px; }
  .closed-prototype .review-note { grid-column:1 / -1; margin-top:5px; }
  .closed-prototype .review-note summary { font-size:13px; }
  .closed-prototype .review-note p { font-size:13px; }
  .closed-prototype .site-announcement { margin:12px 0 13px; padding:8px 6px; border-width:6px; }
  .closed-prototype .site-announcement h2 { font-size:20px; }
  .closed-prototype .announcement-work { font-size:21px; }
  .closed-prototype .article-card { padding:19px 18px; }
}
@media(max-width:360px) {
  .closed-prototype .closed-shell { width:calc(100% - 24px); }
  .closed-prototype .retro-top { grid-template-columns:minmax(0,1fr) 80px; gap:8px; }
  .closed-prototype .nav-entry { font-size:17px; }
  .closed-prototype .sign-word-one { font-size:52px; }
  .closed-prototype .sign-word-two { font-size:31px; left:12px; }
  .closed-prototype .sign-word-three { font-size:47px; left:7px; }
}

@media print {
  .closed-prototype { background:white; }
  .closed-prototype .site-header,.closed-prototype .retro-top,.closed-prototype .site-announcement { display:none; }
}

/* The blog home uses the same sign, narrow menu and paper as its article. */
.closed-prototype .home-entry { padding-top:14px; border-top:1px dotted #7894a0; }
.closed-prototype .home-entry h2 { margin:0 0 10px; font:600 24px/1.5 "MS Mincho","Yu Mincho",serif; }
.closed-prototype .home-entry p { margin:0 0 14px; }
.closed-prototype .home-entry .article-meta { margin-bottom:10px; }

/* Short, text-led home and a fictional guestbook. */
.closed-prototype .home-contents { max-width:650px; margin:24px auto; padding:0 8px; }
.closed-prototype .home-contents h1 { font:600 25px/1.5 "MS Mincho","Yu Mincho",serif; }
.closed-prototype .home-contents h2 { font:600 20px/1.5 "MS Mincho","Yu Mincho",serif; }
.closed-prototype .home-contents p { margin:0 0 1em; overflow-wrap:anywhere; }
.closed-prototype .home-update,.closed-prototype .new-mark { font-size:13px; }
.closed-prototype .new-mark { color:#944334; font-weight:bold; }
.closed-prototype .home-contents hr { border:0; border-top:3px double #7894a0; margin:24px 0; }
.closed-prototype .guestbook { margin:28px 0 0; padding:10px 16px; border-top:3px double #7894a0; background:#fffef2; overflow-wrap:anywhere; }
.closed-prototype .guestbook h2 { font:600 21px/1.5 "MS Mincho","Yu Mincho",serif; }
.closed-prototype .guestbook-note { font-size:12px; color:#4a6069; }
.closed-prototype .guest-entry { padding:12px 0; border-top:1px solid #aabec4; }
.closed-prototype .guest-entry h3 { margin:0 0 3px; font-size:16px; }
.closed-prototype .guest-entry p { margin:3px 0 0; }
.closed-prototype .guest-meta { font-size:13px; color:#4a6069; }
.closed-prototype .guest-reply { margin-left:clamp(16px,5vw,38px); }

/* Fit the blog title on the existing sign without changing its motion. */
.closed-prototype .sign-word-one { top:65px; left:15px; font-size:44px; }
.closed-prototype .sign-word-two { top:127px; left:22px; font-size:42px; }
.closed-prototype .sign-word-three { bottom:42px; left:18px; font-size:38px; }
@media(max-width:720px) {
  .closed-prototype .sign-word-one { top:67px; left:9px; font-size:30px; }
  .closed-prototype .sign-word-two { top:124px; left:12px; font-size:32px; }
  .closed-prototype .sign-word-three { bottom:50px; left:9px; font-size:27px; }
}
@media(max-width:360px) {
  .closed-prototype .sign-word-one { font-size:27px; }
  .closed-prototype .sign-word-two { font-size:29px; }
  .closed-prototype .sign-word-three { font-size:24px; }
}

/* A single horizontal menu under the title. */
.closed-prototype .site-sign { width:100%; max-width:440px; margin:0 auto; }
.closed-prototype .site-menu { max-width:440px; margin:12px auto 20px; display:flex; flex-wrap:wrap; align-items:center; gap:8px; border-top:3px double #7894a0; border-bottom:3px double #7894a0; }
.closed-prototype .nav-entry { display:inline-flex; min-height:44px; padding:7px 12px; border:0; border-radius:0; background:transparent; box-shadow:none; font:16px/1.5 "MS PGothic","Yu Gothic",sans-serif; }
.closed-prototype .nav-entry:hover { background:#edf4d8; color:#8b2842; }
.closed-prototype .article-back { max-width:650px; margin:0 auto 16px; }
.closed-prototype .review-note { max-width:650px; margin:24px auto 0; padding:0 8px; }

/* Full-width header; original motions are disabled for reduced motion. */
.closed-prototype .site-sign { width:100%; max-width:none; height:auto; min-height:120px; }
.closed-prototype .site-menu { max-width:none; }
.closed-prototype .home-contents { max-width:none; }
.closed-prototype .sign-decoration { position:relative; inset:auto; display:flex; flex-wrap:wrap; align-content:center; min-height:104px; padding:20px; }
.closed-prototype .sign-window,.closed-prototype .sign-diamond { opacity:.25; }
.closed-prototype .sign-word-one,.closed-prototype .sign-word-two,.closed-prototype .sign-word-three { position:relative; inset:auto; z-index:1; font-size:clamp(23px,4.8vw,36px); }
.closed-prototype .sign-word-one { animation:retro-letter 1s steps(3,end) infinite alternate; }
.closed-prototype .notice-track { animation:retro-notice 35s linear infinite; }
.closed-prototype .site-announcement { animation:retro-nudge 1s steps(2,end) infinite; }
@keyframes retro-notice { from { transform:translateX(0); } to { transform:translateX(-55em); } }
@keyframes retro-letter { from { transform:scale(.96); } to { transform:scale(1.02); } }
@keyframes retro-nudge { 0%,49% { transform:translateY(0); } 50%,100% { transform:translateY(2px); } }
@media(prefers-reduced-motion:reduce) {
  .closed-prototype .sign-word-one,.closed-prototype .notice-track,.closed-prototype .site-announcement { animation:none !important; transform:none !important; }
  .closed-prototype .notice-track { display:block; width:auto; white-space:normal; }
  .closed-prototype .notice-track > span { display:inline; padding:0; }
  .closed-prototype .notice-track > span + span { display:none; }
}

/* Text-led archive and per-article details. */
.closed-prototype .tag-filter { display:flex; flex-wrap:wrap; align-items:center; gap:4px 8px; margin:8px 0 16px; font-size:14px; }
.closed-prototype .tag-filter a { min-height:44px; display:inline-flex; align-items:center; }
.closed-prototype .tag-filter a[aria-current="page"] { font-weight:bold; color:#33464c; }
.closed-prototype .archive-entry { padding:8px 0 13px; border-top:1px solid #91a8ac; }
.closed-prototype .archive-entry h3 { margin:4px 0; font:600 19px/1.6 "MS Mincho","Yu Mincho",serif; }
.closed-prototype .archive-entry p { margin:3px 0; }
.closed-prototype .archive-meta,.closed-prototype .article-published { color:#4a6069; font-size:13px; }
.closed-prototype .article-published { margin:10px 0 0; text-align:center; }
.closed-prototype .entry-tags a,.closed-prototype .article-published a { display:inline-flex; align-items:center; min-height:44px; }
.closed-prototype .work-facts { display:grid; grid-template-columns:4em minmax(0,1fr); gap:4px 8px; margin:0 0 1.5rem; padding:12px; border:1px solid #9aadb4; font-size:14px; }
.closed-prototype .work-facts dt,.closed-prototype .work-facts dd { margin:0; overflow-wrap:anywhere; }
.closed-prototype .article-end { margin:22px 0 0; padding:12px 0; border-top:3px double #7894a0; }

.closed-prototype .entry-category a { display:inline-flex; align-items:center; min-height:44px; }

/* 展示記事の写真 */
.closed-prototype .article-copy figure { margin: 1.5rem 0; }
.closed-prototype .article-copy figure img { display: block; max-width: 100%; height: auto; }
.closed-prototype .article-copy figcaption { margin-top: .35rem; font-size: .85em; line-height: 1.5; }