/* Treasures of Japan — production stylesheet.
   Implements DESIGN.md: PC catalogue UI (from mock-pc) and a dedicated
   smartphone UI (from mock-sp), switched at 860px. Not a shared template. */
:root{
  --paper:#faf7f1; --card:#fffdfa; --line:#e4ddd0; --line2:#d5cbb6;
  --ink:#211d16; --sub:#6f675a; --shu:#a33327; --gold:#8a6d1f; --goldbg:#f5edd6;
  --serif:"Iowan Old Style",Palatino,"Palatino Linotype","Hiragino Mincho ProN","Yu Mincho",Georgia,serif;
}
*{margin:0;padding:0;box-sizing:border-box}
body{background:var(--paper);color:var(--ink);font-family:var(--serif);font-size:16px;line-height:1.55}
a{color:var(--shu);text-decoration:none}
a:hover{text-decoration:underline}
img{display:block}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px}
.sp-only{display:none}

/* header (PC) */
header.site{border-bottom:3px double var(--line2);background:var(--paper);position:sticky;top:0;z-index:40}
.hbar{display:flex;align-items:center;gap:28px;padding:14px 0}
.wordmark{font-size:24px;letter-spacing:.14em;font-variant:small-caps;white-space:nowrap;color:var(--ink)}
.wordmark b{color:var(--shu);font-weight:600}
.wordmark small{display:block;font-size:11px;letter-spacing:.28em;color:var(--sub);font-variant:normal}
a.wordmark:hover{text-decoration:none}
nav.main{display:flex;gap:22px;font-size:14.5px;letter-spacing:.04em;white-space:nowrap}
nav.main a{color:var(--ink)}
.searchbar{margin-left:auto;display:flex;border:1px solid var(--line2);background:var(--card);border-radius:2px;overflow:hidden}
.searchbar input{border:0;background:transparent;padding:9px 12px;font-family:var(--serif);font-size:14.5px;width:270px;color:var(--ink)}
.searchbar button{border:0;background:var(--ink);color:var(--paper);padding:0 16px;font-family:var(--serif);letter-spacing:.08em;cursor:pointer}
header.site .count{display:none}

/* badges */
.badge{display:inline-block;font-size:11px;letter-spacing:.18em;padding:3px 8px 2px;border:1px solid var(--gold);color:var(--gold);background:var(--goldbg);font-variant:small-caps;white-space:nowrap}
.badge.icp{border-color:#7a7466;color:#5d5747;background:#f0ece1}

/* hero */
.hero{padding:34px 0 8px}
.hero figure{background:var(--card);border:1px solid var(--line);padding:14px}
.hero img{width:100%;height:auto}
.figcap{display:flex;justify-content:space-between;gap:20px;padding-top:10px;font-size:13px;color:var(--sub)}
.figcap .no{letter-spacing:.2em;white-space:nowrap}
.hero h1{font-size:34px;font-weight:600;line-height:1.25;margin:18px 0 4px}
.hero h1 .ja{font-size:22px;color:var(--sub);font-weight:400}
.hero .meta{display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:14.5px;color:var(--sub)}
.lede{font-size:19px;line-height:1.6;max-width:880px;margin:14px 0 4px}
.countline{margin-top:10px;font-size:14px;color:var(--sub);letter-spacing:.05em}
.countline b{color:var(--ink);font-size:17px}
.scope{border:1px solid var(--line);background:var(--card);padding:14px 18px;margin:22px 0 0;font-size:14.5px;line-height:1.65;color:var(--ink)}
.scope b{letter-spacing:.1em;font-variant:small-caps;font-size:12.5px;color:var(--sub);display:block;margin-bottom:4px}

/* sections */
section{padding:30px 0 6px}
h2.sec{font-size:15px;letter-spacing:.3em;font-variant:small-caps;color:var(--ink);border-bottom:1px solid var(--line2);padding-bottom:8px;margin-bottom:18px;display:flex;justify-content:space-between;align-items:baseline}
h2.sec a{font-size:13px;letter-spacing:.06em;font-variant:normal}

/* category tiles */
.tiles{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.tile{background:var(--card);border:1px solid var(--line);padding:16px 14px 12px;color:var(--ink)}
.tile .t{font-size:17px}
.tile .ja{color:var(--sub);font-size:13px}
.tile .n{margin-top:8px;font-size:13px;color:var(--sub)}
.tile .n b{color:var(--shu);font-size:16px}

/* period band */
.periods{display:flex;border:1px solid var(--line);background:var(--card)}
.periods a{flex:1;text-align:center;padding:12px 2px 9px;border-right:1px solid var(--line);color:var(--ink)}
.periods a:last-child{border-right:0}
.periods .p{font-size:14.5px}
.periods .n{display:block;font-size:12px;color:var(--sub);margin-top:2px}

/* cards */
.rail{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:var(--card);border:1px solid var(--line);padding:10px 10px 12px;min-width:0}
.card .ph{background:#efe9dc;display:flex;align-items:center;justify-content:center;min-height:150px}
.card img{max-width:100%;height:auto}
.card h3{font-size:16.5px;font-weight:600;line-height:1.35;margin:10px 0 2px}
.card h3 a{color:var(--ink)}
.card .ja{font-size:13.5px;color:var(--sub)}
.card .m{margin-top:7px;font-size:13px;color:var(--sub);display:flex;justify-content:space-between;gap:8px}
.card .top{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;flex-wrap:wrap;row-gap:6px}

/* museums list */
.museums{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.museum{background:var(--card);border:1px solid var(--line);padding:16px;color:var(--ink)}
.museum .t{font-size:17.5px}
.museum .ja{color:var(--sub);font-size:13px}
.museum .n{color:var(--sub);font-size:13.5px;margin-top:4px}
.museum .n b{color:var(--ink)}

/* browse layout */
.browser{display:grid;grid-template-columns:248px 1fr;gap:28px;padding:26px 0 10px;align-items:start}
.filters{position:sticky;top:86px;border:1px solid var(--line);background:var(--card);padding:16px 16px 8px}
.filters h4{font-size:12.5px;letter-spacing:.24em;font-variant:small-caps;color:var(--sub);margin:14px 0 8px}
.filters h4:first-child{margin-top:0}
.filters label{display:flex;gap:8px;align-items:baseline;font-size:14.5px;padding:3px 0;cursor:pointer}
.filters label .c{margin-left:auto;color:var(--sub);font-size:12.5px}
.filters input{accent-color:var(--shu)}
.filters .applyrow{display:none}
.bhead{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.bhead .count{font-size:15px;color:var(--sub)}
.bhead .count b{color:var(--ink);font-size:18px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line2);background:var(--card);border-radius:20px;padding:4px 12px;font-size:13.5px;cursor:pointer}
.chip b{color:var(--shu);font-weight:400;margin-left:6px}
.viewctl{margin-left:auto;display:flex;gap:8px;align-items:center;font-size:14px}
.viewctl .seg{border:1px solid var(--line2);display:flex}
.viewctl .seg button{padding:5px 12px;background:var(--card);border:0;font-family:var(--serif);font-size:14px;cursor:pointer}
.viewctl .seg button.on{background:var(--ink);color:var(--paper)}
select{font-family:var(--serif);font-size:14px;padding:5px;border:1px solid var(--line2);background:var(--card)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:14px}
.pager{display:flex;gap:6px;justify-content:center;padding:26px 0 8px;font-size:15px;flex-wrap:wrap}
.pager button,.pager span{border:1px solid var(--line2);background:var(--card);padding:6px 13px;color:var(--ink);font-family:var(--serif);font-size:15px;cursor:pointer}
.pager span.on{background:var(--ink);color:var(--paper)}
.pager span.off{color:var(--sub);cursor:default}
.showmore{display:none}
table.ltable{width:100%;border-collapse:collapse;margin-top:14px;background:var(--card);border:1px solid var(--line)}
.ltable th{font-size:12px;letter-spacing:.18em;font-variant:small-caps;color:var(--sub);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line2)}
.ltable td{padding:8px 12px;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:middle}
.ltable td img{width:64px;height:auto}
.ltable td .ja{color:var(--sub);font-size:12.5px}
.ltable td a{color:var(--ink);font-weight:600}
.loadnote{font-size:13px;color:var(--sub);margin-top:8px}
.filterbtn{display:none}

/* axis pages */
.axishead{padding:26px 0 4px}
.axishead .k{font-size:12px;letter-spacing:.26em;color:var(--sub);font-variant:small-caps}
.axishead h1{font-size:30px;line-height:1.3;margin-top:4px;font-weight:600}
.axishead h1 .ja{font-size:19px;color:var(--sub);font-weight:400}
.axishead .sub{font-size:15px;color:var(--sub);margin-top:5px}
.axishead .note{font-size:13.5px;color:var(--sub);margin-top:8px;max-width:760px}
.insearch{margin:14px 0 0;max-width:560px}
.insearch form{display:flex;gap:8px}
.insearch input{flex:1;border:1px solid var(--line2);background:var(--card);padding:11px 13px;font-family:var(--serif);font-size:15px}
.insearch button{border:0;background:var(--ink);color:var(--paper);padding:0 16px;font-family:var(--serif);cursor:pointer}

/* item page */
.crumbs{font-size:13.5px;color:var(--sub);padding:20px 0 0}
.crumbs a{color:var(--sub)}
.itemhead{padding:10px 0 4px}
.itemhead h1{font-size:32px;line-height:1.3;font-weight:600}
.itemhead .ja{font-size:20px;color:var(--sub);margin-top:2px}
.itemgrid{display:grid;grid-template-columns:1fr 318px;gap:30px;padding:18px 0 6px;align-items:start}
.mainphoto{background:var(--card);border:1px solid var(--line);padding:14px}
.mainphoto img{width:100%;height:auto;cursor:zoom-in}
.viewbar{display:flex;gap:10px;margin-top:10px;font-size:13.5px;flex-wrap:wrap}
.viewbar button,.viewbar a{border:1px solid var(--line2);padding:5px 12px;color:var(--ink);background:var(--card);font-family:var(--serif);font-size:13.5px;cursor:pointer}
.details{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.details figure{background:var(--card);border:1px solid var(--line);padding:8px}
.details img{width:100%;height:auto;cursor:zoom-in}
.details figcaption{font-size:12.5px;color:var(--sub);padding-top:6px}
.details h3{grid-column:1/-1;font-size:12.5px;letter-spacing:.26em;font-variant:small-caps;color:var(--sub)}
.prose{font-size:16.5px;line-height:1.75;padding:18px 0 4px;max-width:700px}
.prose p{margin-bottom:14px}
.prose .attr{font-size:13px;color:var(--sub)}
.atglance{border-left:3px solid var(--gold);background:var(--goldbg);padding:12px 16px;font-size:16.5px;margin:16px 0 4px;max-width:700px}
.factsheet{border:1px solid var(--line);background:var(--card);padding:6px 18px 12px;position:sticky;top:86px}
.factsheet h3{font-size:12.5px;letter-spacing:.26em;font-variant:small-caps;color:var(--sub);padding:12px 0 6px}
.factsheet dl{display:grid;grid-template-columns:96px 1fr;row-gap:7px;font-size:14.5px}
.factsheet dt{color:var(--sub)}
.factsheet dd{font-weight:500}
.facts{display:none}
.record{border:1px solid var(--line2);background:#f4efe3;padding:16px 18px;margin-top:20px;max-width:700px}
.record h3{font-size:12.5px;letter-spacing:.26em;font-variant:small-caps;color:var(--sub);margin-bottom:10px}
.record p,.record li{font-size:14px;line-height:1.65}
.record ul{list-style:none}
.record li{padding:3px 0}
.record .cite{background:var(--card);border:1px dashed var(--line2);padding:10px 12px;margin-top:10px;font-size:13.5px}
.recdet{max-width:700px;margin-top:16px}
.recdet summary{cursor:pointer;font-size:13px;letter-spacing:.14em;color:var(--sub);font-variant:small-caps}
.recdet ul{list-style:none;margin-top:8px;font-size:13.5px;color:var(--ink)}
.recdet li{padding:2px 0;border-bottom:1px dotted var(--line)}

/* full-screen viewer */
.viewer{position:fixed;inset:0;background:rgba(22,19,14,.95);z-index:200;display:none;overflow:hidden}
.viewer.open{display:block}
.viewer .stage{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.viewer img{max-width:none;cursor:grab;user-select:none;-webkit-user-drag:none}
.viewer .bar{position:absolute;top:0;left:0;right:0;display:flex;gap:8px;justify-content:flex-end;padding:12px;z-index:2}
.viewer .bar button{background:var(--card);border:1px solid var(--line2);color:var(--ink);font-family:var(--serif);font-size:14px;padding:7px 14px;cursor:pointer}
.viewer .cap{position:absolute;left:0;right:0;bottom:0;color:#d8cfba;font-size:13px;padding:10px 16px;text-align:center;z-index:2}

/* docs (about / network) */
.doc{max-width:780px;padding:30px 0 6px}
.doc h1{font-size:30px;font-weight:600;line-height:1.3;margin-bottom:6px}
.doc h2{font-size:14px;letter-spacing:.26em;font-variant:small-caps;margin:26px 0 8px;border-bottom:1px solid var(--line2);padding-bottom:6px}
.doc p{font-size:16px;line-height:1.75;margin-bottom:12px}
.doc ul{margin:0 0 12px 20px;line-height:1.7}
.netlist{list-style:none}
.netlist li{padding:12px 0;border-bottom:1px solid var(--line)}
.netlist .nm{font-size:18px;color:var(--ink);font-weight:600}
.netlist .dm{font-size:13.5px}
.netlist .bl{color:var(--sub);font-size:14.5px;margin-top:2px}

/* restrained ad slot — bottom of page only (DESIGN.md §7.4) */
.adslot{border:1px solid var(--line);background:#f3efe6;margin:34px 0 0;padding:10px 14px;text-align:center}
.adslot .lb{font-size:10.5px;letter-spacing:.3em;color:#9a917e;font-variant:small-caps;margin-bottom:6px}

footer.site{border-top:3px double var(--line2);margin-top:44px;padding:22px 0 34px;font-size:13.5px;color:var(--sub)}
footer.site .cols{display:flex;gap:40px;flex-wrap:wrap}
footer.site b{color:var(--ink);letter-spacing:.14em;font-variant:small-caps}
footer.site a{color:var(--sub)}
.foot-note{margin-top:16px;font-size:12px;color:#9a917e}
nav.bottom{display:none}

/* ================= smartphone UI (dedicated, in-museum first) ============ */
@media (max-width:860px){
  body{padding-bottom:64px;font-size:16px}
  .wrap{padding:0}
  .pc-only{display:none !important}
  .sp-only{display:block}
  header.site{position:static;padding:12px 16px 10px}
  .hbar{padding:0;gap:0}
  .wordmark{font-size:19px;letter-spacing:.1em}
  .wordmark small{display:none}
  nav.main,.searchbar{display:none}
  header.site .count{display:block;font-size:12px;color:var(--sub);margin-left:auto}

  /* in-museum module */
  .nowm{background:var(--ink);color:var(--paper);padding:16px}
  .nowm h2{font-size:13px;letter-spacing:.26em;font-variant:small-caps;color:#d8cfba;font-weight:400}
  .nowm p{font-size:15px;margin:6px 0 12px;line-height:1.5}
  .nowm .chips{display:flex;flex-direction:column;gap:8px}
  .nowm a.mchip{background:var(--card);color:var(--ink);border-radius:3px;padding:11px 14px;font-size:16.5px;display:flex;justify-content:space-between;align-items:center;gap:10px}
  .nowm a.mchip .nm small{display:block;color:var(--sub);font-size:12.5px;letter-spacing:.08em;margin-top:1px}
  .nowm a.mchip .rt{white-space:nowrap;color:var(--sub);font-size:13.5px}
  .nowm a.mchip .arr{color:var(--shu)}
  .searchrow{padding:14px 16px 2px}
  .searchrow form{display:flex;border:1.5px solid var(--ink);background:var(--card);border-radius:3px;overflow:hidden}
  .searchrow input{flex:1;border:0;background:transparent;padding:14px;font-family:var(--serif);font-size:16.5px;min-width:0}
  .searchrow button{border:0;background:var(--ink);color:var(--paper);padding:0 18px;font-size:15px;letter-spacing:.06em}
  .searchrow .hint{font-size:12.5px;color:var(--sub);margin-top:6px}

  section{padding:0}
  h2.sec{font-size:13px;letter-spacing:.28em;padding:20px 16px 8px;margin-bottom:0}
  h2.sec a{font-size:12.5px}
  .rail{display:flex;gap:12px;overflow-x:auto;padding:14px 16px 4px;scroll-snap-type:x mandatory}
  .rail .card{flex:0 0 218px;scroll-snap-align:start}
  .rail .card .ph{min-height:110px}
  .vcard{background:var(--card);border:1px solid var(--line);margin:14px 16px 0;padding:10px}
  .vcard .top{display:flex;justify-content:space-between;margin-bottom:8px;align-items:center;flex-wrap:wrap;row-gap:6px}
  .vcard .ph{background:#efe9dc;display:flex;align-items:center;justify-content:center}
  .vcard img{max-width:100%;height:auto}
  .vcard h3{font-size:18px;line-height:1.35;margin:10px 2px 2px;font-weight:600}
  .vcard h3 a{color:var(--ink)}
  .vcard .ja{font-size:14px;color:var(--sub);margin:0 2px}
  .vcard .m{font-size:13.5px;color:var(--sub);margin:6px 2px 2px}
  .chiprow{display:flex;gap:8px;overflow-x:auto;padding:12px 16px 2px}
  .chiprow a{flex:0 0 auto;border:1px solid var(--line2);background:var(--card);border-radius:20px;padding:8px 14px;color:var(--ink);font-size:14.5px}
  .chiprow a .n{color:var(--shu);font-size:12.5px;margin-left:4px}
  .scope{margin:18px 16px 0}

  /* browse */
  .browser{display:block;padding:0}
  .bhead{padding:14px 16px 0}
  .chips{padding:0 16px}
  .viewctl .seg{display:none}
  .grid{display:block;margin-top:6px}
  .grid .card{margin:14px 16px 0;padding:10px}
  .grid .card .ph{min-height:0}
  .grid .card h3{font-size:18px}
  .pager{display:none}
  .showmore{display:block;margin:18px 16px 0;width:calc(100% - 32px);border:1px solid var(--line2);background:var(--card);padding:13px;font-family:var(--serif);font-size:15.5px;cursor:pointer}
  .filters{display:none;position:fixed;left:0;right:0;bottom:0;top:auto;max-height:78vh;overflow-y:auto;z-index:120;border-top:2px solid var(--ink);padding:18px 16px 20px}
  .filters.open{display:block}
  .filters .applyrow{display:flex;gap:10px;margin-top:16px}
  .filters .applyrow button{flex:1;border:0;background:var(--shu);color:#fff;padding:13px;font-family:var(--serif);font-size:15.5px;cursor:pointer}
  .filters .applyrow .clearf{background:var(--card);color:var(--ink);border:1px solid var(--line2)}
  .filterbtn{display:block;position:fixed;right:16px;bottom:76px;background:var(--shu);color:#fff;border:0;border-radius:26px;padding:13px 22px;font-size:15.5px;box-shadow:0 4px 14px rgba(33,29,22,.35);z-index:110;letter-spacing:.05em;font-family:var(--serif);cursor:pointer}
  .loadnote{padding:0 16px}

  /* axis pages */
  .axishead{padding:16px 16px 4px}
  .axishead h1{font-size:24px}
  .insearch{margin:12px 16px 0;max-width:none}

  /* item page */
  .crumbs{padding:12px 16px 0;font-size:12.5px}
  .itemhead{padding:8px 16px 0}
  .itemhead h1{font-size:24px;line-height:1.32;margin-top:8px}
  .itemhead .ja{font-size:16.5px;margin-top:3px}
  .itemgrid{display:block;padding:0}
  .mainphoto{margin:14px 16px 0;padding:8px}
  .details{display:flex;flex-wrap:wrap;gap:12px;padding:4px 16px 4px;margin-top:10px}
  .details figure{flex:0 0 calc(50% - 6px)}
  .details h3{flex:0 0 100%}
  .atglance{margin:14px 16px 0;font-size:15.5px;line-height:1.6}
  .prose{padding:16px}
  .facts{display:block;margin:6px 16px 0;background:var(--card);border:1px solid var(--line);padding:6px 16px 12px}
  .facts h3{font-size:12px;letter-spacing:.26em;font-variant:small-caps;color:var(--sub);padding:12px 0 4px}
  .facts dl div{display:flex;gap:12px;padding:6px 0;border-bottom:1px dotted var(--line)}
  .facts dl div:last-child{border-bottom:0}
  .facts dt{flex:0 0 92px;color:var(--sub);font-size:14px}
  .facts dd{font-size:15px;font-weight:500}
  .factsheet{display:none}
  .record{margin:4px 16px 0;padding:14px 16px}
  .recdet{margin:12px 16px 0}
  .doc{padding:22px 16px 6px}
  .adslot{margin:30px 16px 0}
  footer.site{padding:18px 16px 22px;line-height:1.7}
  footer.site .cols{display:block}
  footer.site .cols>div{margin-bottom:12px}
  nav.bottom{display:flex;position:fixed;left:0;right:0;bottom:0;background:var(--card);border-top:1px solid var(--line2);z-index:130}
  nav.bottom a{flex:1;text-align:center;padding:9px 0 10px;color:var(--sub);font-size:12px;letter-spacing:.08em}
  nav.bottom a .ic{display:block;font-size:19px;line-height:1.2;color:var(--ink)}
  nav.bottom a.on{color:var(--shu)}
  nav.bottom a.on .ic{color:var(--shu)}
}