/* 試作「地図」: 扉の下は、左上に貼りつく柱（Contents / Books / People）と、右いっぱいの中身。スマホは下に浮かぶ三つのタブ */

/* ---- 骨組み ---- */
.atlas { --rail: 11.5rem; display: grid; grid-template-columns: var(--rail) 1fr; min-height: 100svh; padding-left: var(--side); }
.rail { position: sticky; top: 0; align-self: start; height: 100svh; display: flex; flex-direction: column; padding: 2.6rem 2rem 2rem 0; box-sizing: border-box; }
.tabs { display: flex; flex-direction: column; }
.rail-mark { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.16em; color: var(--ink-faint); margin: 0 0 1.6rem; }
.tab { position: relative; display: flex; align-items: baseline; gap: 0.7rem; width: 100%; padding: 0.4rem 0; border: 0; background: none; color: var(--ink-faint); font: inherit; text-align: left; cursor: pointer; -webkit-tap-highlight-color: transparent; transition: color 0.4s ease; }
.tab-en { font-family: "Newsreader", serif; font-size: 1.25rem; line-height: 1.1; letter-spacing: -0.015em; }
.tab-ja { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.1em; }
.tab[aria-selected="true"] { color: var(--ink); }
.tab::before { content: ""; position: absolute; left: -1.1rem; top: 50%; width: 5px; height: 5px; margin-top: -2px; border-radius: 50%; background: var(--accent); opacity: 0; transform: scale(0.4); transition: opacity 0.4s, transform 0.5s cubic-bezier(.2,.7,.2,1); }
.tab[aria-selected="true"]::before { opacity: 1; transform: none; }
@media (hover: hover) { .tab:hover { color: var(--ink-soft); } .tab[aria-selected="true"]:hover { color: var(--ink); } }
.tab:focus { outline: none; }
.tab:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; border-radius: 2px; }
.rail-foot { margin-top: auto; font-family: var(--sans); font-size: 0.7rem; line-height: 1.8; color: var(--ink-faint); }
.rail-foot a { color: inherit; text-decoration: none; }

.atlas-panels { min-width: 0; view-transition-name: atlas-panels; }
.panel[hidden] { display: none; }
.panel-head { padding: 2.6rem var(--side) 0 3rem; }
#p-contents .panel-head, :is(#p-contents, #p-search) .list, #p-search .s-box { padding-left: max(3rem, calc(38.2vw - var(--side) - var(--rail))); }
.panel-head h2 { font-size: 1.05rem; font-weight: 600; letter-spacing: 0.14em; margin: 0; }
.panel-head p { font-family: var(--sans); font-size: 0.76rem; line-height: 1.8; letter-spacing: 0.04em; color: var(--ink-faint); margin: 0.35rem 0 0; }

/* ---- Contents ---- */
#p-contents .panel-head { padding-bottom: 1.4rem; }
:is(#p-contents, #p-search) .list { box-sizing: content-box; max-width: 34rem; padding-top: 1rem; padding-right: var(--side); padding-bottom: 12rem; }
:is(#p-contents, #p-search) .list a { grid-template-columns: 2.6rem 1fr; padding: 1.15rem 0; border-top: 1px solid color-mix(in srgb, var(--rule) 60%, transparent); }
:is(#p-contents, #p-search) .list li:first-child a { border-top: 0; }
:is(#p-contents, #p-search) .list .n { font-size: 0.82rem; color: color-mix(in srgb, var(--ink-faint) 70%, transparent); letter-spacing: 0.02em; }

/* ---- 地図の面: 見出しは地図の上に重ね、地図は画面いっぱい ---- */
.panel.is-map { position: relative; }
.panel.is-map .panel-head { position: absolute; z-index: 860; left: 0; top: 0; pointer-events: none; }
.panel.is-map .panel-head p { max-width: 22rem; }
.map { position: relative; height: 100svh; overflow: clip; touch-action: none; user-select: none; -webkit-user-select: none; cursor: grab; }
.map.drag { cursor: grabbing; }
.map canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.region { position: absolute; z-index: 750; left: 0; top: 0; text-shadow: 0 0 4px var(--paper), 0 0 10px var(--paper); font-family: var(--sans); font-size: 12px; font-weight: 500; letter-spacing: 0.2em; color: color-mix(in srgb, var(--tint) 50%, var(--ink) 50%); white-space: nowrap; pointer-events: none; }

/* 地図の上の本と人 */
.node { position: absolute; left: 0; top: 0; padding: 0; border: 0; background: none; cursor: pointer; transform-origin: 50% 50%; will-change: transform, opacity; font: inherit; color: var(--ink); -webkit-tap-highlight-color: transparent; }
.node:focus { outline: none; }
.node:focus-visible .cv, .node:focus-visible .face { outline: 1px solid var(--accent); outline-offset: 4px; }
.node .cv, .node .face { transform: scale(var(--s, 1)); transform-origin: 50% 100%; }
.cv { display: block; width: 64px; height: 92px; border-radius: 2px; overflow: hidden; background: var(--tint); box-shadow: 0 1px 1px #0000001f, 0 6px 16px #00000014; }
.cv img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0; transition: opacity 0.5s ease; }
.cv img.ok { opacity: 1; }
.cv.type { display: flex; align-items: center; justify-content: center; padding: 9px 6px; box-sizing: border-box; background: color-mix(in srgb, var(--tint, #b9bfc4) 34%, var(--paper)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tint, #b9bfc4) 40%, transparent), 0 6px 16px #0000000f; }
.map.far .node .cv.type span { visibility: hidden; }
.cv.type span { writing-mode: vertical-rl; font-size: 10.5px; line-height: 1.35; letter-spacing: 0.1em; font-weight: 500; max-height: 100%; overflow: hidden; }
.face { display: block; width: 22px; height: 22px; border-radius: 50%; background: color-mix(in srgb, var(--tint, #b9bfc4) 70%, var(--paper)); box-shadow: 0 0 0 4px color-mix(in srgb, var(--paper) 70%, transparent), 0 0 0 5px color-mix(in srgb, var(--tint, #b9bfc4) 50%, transparent); }
.node .lb { position: absolute; left: 50%; top: 100%; transform: translateX(-50%); margin-top: 8px; width: 150px; text-align: center; transition: opacity 0.3s, transform 0.25s ease; }
.node .lb b { display: block; font-size: 13px; font-weight: 600; line-height: 1.45; letter-spacing: 0.05em; word-break: auto-phrase; }
.node .lb .nt { display: none; margin-top: 4px; font-family: var(--sans); font-size: 12px; line-height: 1.55; letter-spacing: 0.02em; color: var(--ink-faint); word-break: auto-phrase; }
.node.on .cv { outline: 1.5px solid var(--accent); outline-offset: 4px; }
.node.on .face { box-shadow: 0 0 0 4px var(--paper), 0 0 0 5.5px var(--accent); }
.node.on .nt { display: block; }
.map.far .node:not(.on):not(.near) .lb { opacity: 0; }
.map .lb { text-shadow: 0 0 3px var(--paper), 0 0 8px var(--paper); }
@media (hover: hover) and (pointer: fine) {
  .node .cv, .node .face { transition: transform 0.25s ease, box-shadow 0.25s ease; }
  .node:hover { z-index: 700 !important; }
  .node:hover .cv { transform: scale(calc(var(--s, 1) * 1.25)); box-shadow: 0 2px 4px #0000001f, 0 14px 30px #0000001f; }
  .node:hover .lb { transform: translateX(-50%) translateY(6px); opacity: 1 !important; }
  .node:hover .nt { display: block; }
  .node:hover .face { transform: scale(1.35); }
}
.zoom { position: absolute; z-index: 860; right: 1.4rem; bottom: 1.4rem; display: flex; flex-direction: column; border: 1px solid var(--rule); border-radius: 3px; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.zoom button { width: 34px; height: 34px; border: 0; background: none; color: var(--ink-soft); font: 300 18px/1 var(--sans); cursor: pointer; }
.zoom button + button { border-top: 1px solid var(--rule); }

/* ---- 札（選んだ本・人） ---- */
.card { position: absolute; z-index: 900; right: 1.4rem; top: 1.4rem; width: 21rem; max-height: calc(100% - 2.8rem); box-sizing: border-box; overflow: auto; overscroll-behavior: contain; background: linear-gradient(color-mix(in srgb, var(--paper) 94%, transparent) 0 0), var(--grain) 0 0 / 180px, var(--paper); border-radius: 3px; box-shadow: 0 0 0 1px var(--rule), 0 12px 32px #0000000d; padding: 1.5rem 1.5rem 1.4rem; opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity 0.45s ease, transform 0.6s cubic-bezier(.2,.7,.2,1); cursor: auto; }
.card.show { opacity: 1; transform: none; pointer-events: auto; }
.card .grab { display: none; }
.card h3:focus { outline: none; }
.panel:focus { outline: none; }
.card .x { position: absolute; right: 0.7rem; top: 0.7rem; width: 30px; height: 30px; border: 0; border-radius: 50%; background: none; color: var(--ink-faint); font: 300 20px/30px var(--sans); cursor: pointer; }
@media (hover: hover) { .card .x:hover { background: var(--tint); color: var(--ink); } }
.card .kind { display: flex; align-items: center; gap: 0.5rem; font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.12em; color: var(--ink-faint); margin: 0 0 1.1rem; }
.card .kind i { width: 8px; height: 8px; border-radius: 50%; background: var(--tint); }
.card .hero.solo { grid-template-columns: 1fr; }
.card .hero { display: grid; grid-template-columns: auto 1fr; gap: 1.1rem; align-items: end; margin: 0 0 1.1rem; }
.card .hero .cv { width: 5.4rem; height: 7.8rem; }
.card .hero .cv.type span { font-size: 12px; }
.card h3 { font-size: 1.22rem; font-weight: 600; letter-spacing: 0.06em; line-height: 1.5; margin: 0; word-break: auto-phrase; }
.card .by { font-family: var(--sans); font-size: 0.74rem; color: var(--ink-faint); margin: 0.3rem 0 0; letter-spacing: 0.02em; }
.card .note { font-size: 0.95rem; line-height: 1.85; color: var(--ink-soft); margin: 0 0 1.3rem; }
.card h4 { font-family: var(--sans); font-weight: 400; font-size: 0.68rem; letter-spacing: 0.14em; color: var(--ink-faint); margin: 1.3rem 0 0.2rem; padding-top: 1.1rem; border-top: 1px solid var(--rule); }
.card ul { list-style: none; margin: 0; padding: 0; }
.card .chs a { display: grid; grid-template-columns: 2.2rem 1fr auto; gap: 0.6rem; align-items: baseline; padding: 0.65rem 0; color: var(--ink); text-decoration: none; }
.card .chs li + li a { border-top: 1px solid color-mix(in srgb, var(--rule) 55%, transparent); }
.card .chs .n { font-family: "Newsreader", serif; font-size: 0.85rem; color: var(--ink-faint); font-variant-numeric: lining-nums; }
.card .chs b { font-weight: 500; font-size: 0.98rem; letter-spacing: 0.05em; }
.card .chs small { display: block; font-family: var(--sans); font-size: 0.72rem; color: var(--ink-faint); margin-top: 0.15rem; letter-spacing: 0.02em; }
.card .chs .go { font-family: "Newsreader", serif; color: var(--accent); transition: transform 0.3s; }
@media (hover: hover) { .card .chs a:hover .go { transform: translateX(3px); } }
.card .rel { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.6rem; }
.card .rel button { border: 0; border-radius: 99px; padding: 0.38rem 0.8rem; background: color-mix(in srgb, var(--tint) 22%, var(--paper)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tint) 45%, transparent); color: var(--ink-soft); font-size: 0.8rem; line-height: 1.3; font-family: inherit; letter-spacing: 0.04em; cursor: pointer; }
@media (hover: hover) { .card .rel button:hover { color: var(--ink); background: color-mix(in srgb, var(--tint) 40%, var(--paper)); } }
.card .out { display: inline-block; margin-top: 1.4rem; font-family: var(--sans); font-size: 0.74rem; letter-spacing: 0.04em; color: var(--accent); text-decoration: none; }

.hint { margin: 0.4rem 0 0; font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.06em; color: var(--ink-faint); transition: opacity 0.8s; }

/* 切り替えの動き */
::view-transition-old(atlas-panels) { animation: 0.22s ease both vt-out; }
::view-transition-new(atlas-panels) { animation: 0.5s 0.12s cubic-bezier(.2,.7,.2,1) both vt-in; }
@keyframes vt-out { to { opacity: 0; } }
@keyframes vt-in { from { opacity: 0; transform: translateY(10px); } }

/* ---- スマホ: 下に浮かぶ三つのタブ。札は下からの板 ---- */
@media (max-width: 760px) {
  .atlas { display: block; padding: 0; }
  .rail { position: fixed; z-index: 980; left: 50%; top: auto; bottom: calc(18px + env(safe-area-inset-bottom)); height: auto; width: auto; flex-direction: row; gap: 2px; padding: 4px; border: 0; border-radius: 99px; transform: translateX(-50%); background: linear-gradient(color-mix(in srgb, var(--paper) 92%, transparent) 0 0), var(--grain) 0 0 / 180px, var(--paper); box-shadow: 0 0 0 1px var(--rule), 0 8px 24px #00000014; transition: transform 0.5s cubic-bezier(.2,.7,.2,1), opacity 0.4s; }
  .rail.away, .sheet-open .rail { transform: translateX(-50%) translateY(140%); opacity: 0; pointer-events: none; }
  .rail-mark, .rail-foot { display: none; }
  .tabs { flex-direction: row; gap: 2px; }
  .tab { width: auto; padding: 0.78rem 1.2rem; border-radius: 99px; gap: 0; }
  .tab::before { display: none; }
  .tab-ja { display: none; }
  .tab-en { font-size: 1.02rem; letter-spacing: 0; }
  .tab[aria-selected="true"] { background: var(--tint); box-shadow: 0 0 0 1px var(--rule); }
  .panel-head { padding: 2.2rem var(--side) 0; }
  :is(#p-contents, #p-search) .list { padding: 0.6rem var(--side) 9rem; }
  :is(#p-contents, #p-search) .list a { grid-template-columns: 2.2rem 1fr; }
  .panel.is-map .panel-head { right: 0; padding: 1.2rem var(--side) 0.9rem; background: var(--paper); box-shadow: 0 1px 0 var(--rule); }
  #p-contents .panel-head, :is(#p-contents, #p-search) .list, #p-search .s-box { padding-left: var(--side); }
  .zoom { display: none; }
  .card { position: fixed; left: 0; right: 0; top: auto; bottom: 0; width: auto; max-height: 52%; border-radius: 12px 12px 0 0; box-shadow: 0 -1px 0 var(--rule), 0 -8px 24px #0000000d; padding: 0.6rem 1.4rem calc(2rem + env(safe-area-inset-bottom)); transform: translateY(105%); transition: opacity 0.3s, transform 0.55s cubic-bezier(.2,.75,.15,1); }
  .card.show { transform: none; }
  .card .grab { display: block; width: 36px; height: 4px; border-radius: 2px; margin: 0.2rem auto 1rem; background: var(--rule); border: 0; padding: 0; }
  .card .x { top: 0.5rem; right: 0.5rem; width: 44px; height: 44px; line-height: 44px; }
  .sheet-open .hint { opacity: 0 !important; }
  .panel.is-map .panel-head { pointer-events: auto; touch-action: pan-y; }
  .card .hero .cv { width: 4.4rem; height: 6.4rem; }
}

/* ---- 章のページ: この章に出てくる本と人 ---- */
.kin { margin: 4.2rem 0 0; padding-top: 1.6rem; border-top: 1px solid var(--rule); }
.kin h4 { font-family: var(--sans); font-weight: 400; font-size: 0.7rem; letter-spacing: 0.14em; color: var(--ink-faint); margin: 0 0 0.9rem; }
.kin ul { list-style: none; margin: 0 0 2rem; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 0.6rem 1.4rem; }
.kin a { display: grid; grid-template-columns: auto 1fr; gap: 0.9rem; align-items: center; padding: 0.5rem 0; color: var(--ink); text-decoration: none; }
.kin .cv { width: 2.6rem; height: 3.75rem; }
.kin .cv.type span { font-size: 7.5px; }
.kin .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--tint); margin: 0 0.4rem; }
.kin .t b { display: block; font-size: 0.92rem; font-weight: 500; letter-spacing: 0.05em; }
.kin .t small { display: block; font-family: var(--sans); font-size: 0.72rem; line-height: 1.6; color: var(--ink-faint); margin-top: 0.15rem; }
@media (hover: hover) { .kin a:hover b { color: var(--accent); } }

/* スマホの章ページ: 次の章の題を右揃えで折らない */
@media (max-width: 760px) { .pager { grid-template-columns: 1fr !important; gap: 1.6rem; } .pager .next { grid-column: 1; text-align: left; } }

/* 2周目の仕上げ */
.node .lb b, .node .lb .nt { text-shadow: 0 0 2px var(--paper), 0 0 6px var(--paper), 0 0 12px var(--paper); }
.node .lb { width: 168px; text-wrap: balance; }
.node .lb b { text-wrap: balance; }
.map:has(.node.on) .node:not(.on):not(.near) .lb { opacity: 0; }
.card .note, .card h3 { text-wrap: balance; }
.node .cv.type { box-shadow: none; background: color-mix(in srgb, var(--tint) 48%, var(--paper)); }
.panel.is-map .panel-head { padding-left: max(3rem, calc(38.2vw - var(--side) - var(--rail))); }
.hint { position: absolute; z-index: 860; right: 4.6rem; bottom: 1.7rem; margin: 0; font-size: 0.7rem; pointer-events: none; }
@media (max-width: 760px) {
  .panel.is-map .panel-head { padding-left: var(--side); background: linear-gradient(color-mix(in srgb, var(--paper) 94%, transparent) 0 0), var(--grain) 0 0 / 180px, var(--paper); }
  .hint { right: auto; left: 50%; transform: translateX(-50%); bottom: calc(96px + env(safe-area-inset-bottom)); white-space: nowrap; }
}

/* 3周目 */
.map.far .node.key .lb { opacity: 1; }

.node::before { content: ""; position: absolute; inset: -11px; }
.panel.is-map .panel-head { pointer-events: auto; right: 0; padding-bottom: 1.1rem; background: linear-gradient(color-mix(in srgb, var(--paper) 94%, transparent) 0 0), var(--grain) 0 0 / 180px, var(--paper); box-shadow: 0 1px 0 var(--rule); }
.card { top: 4.4rem; max-height: calc(100% - 5.8rem); }
@media (max-width: 760px) {
  .card { top: auto; max-height: 52%; }
  .card .grab { display: block; width: 100%; height: 30px; margin: -0.6rem 0 0.4rem; background: none; touch-action: none; position: relative; cursor: grab; }
  .card .grab::after { content: ""; position: absolute; left: 50%; top: 13px; width: 36px; height: 4px; margin-left: -18px; border-radius: 2px; background: var(--rule); }
}
.map.far:not(:has(.node.on)) .node.key .lb { opacity: 1 !important; visibility: visible; }
.map.far .node.key .lb .nt { display: none !important; }
.card .note, .card h3, .node .lb b { word-break: auto-phrase; }
.card .note, .card p, .kin p { text-align: left; text-justify: auto; }
@media (min-width: 761px) { .card { top: calc(120px + 1.2rem); max-height: calc(100% - 120px - 2.6rem); } }

/* 4周目 */
.cv.type, .node .cv.type { background: var(--paper); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tint, #b9bfc4) 60%, transparent), inset 3px 0 0 color-mix(in srgb, var(--tint, #b9bfc4) 80%, transparent); }
.node .cv.type span { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; color: var(--ink-soft); }
.kin .cv.type span { font-size: 9px; font-weight: 600; letter-spacing: 0.04em; color: var(--ink-soft); }
.card .chs small { text-wrap: balance; word-break: auto-phrase; }
.map:has(.card.show) .node.on .nt { display: none; }
.kin a { grid-template-columns: 2.6rem 1fr; }
.kin .dot { justify-self: center; margin: 0; }
.panel.is-map .panel-head { padding-bottom: 1rem; }
.hint { position: static; transform: none; margin: 0.35rem 0 0; font-size: 0.7rem; }
@media (max-width: 760px) { .hint { position: static; transform: none; white-space: normal; } }
.map.far .node .cv.type { background: color-mix(in srgb, var(--tint, #b9bfc4) 42%, var(--paper)); }

/* 5周目 */
.node.lb-off .lb { visibility: hidden !important; }
@media (hover: hover) and (pointer: fine) { .node:hover .lb { visibility: visible !important; opacity: 1 !important; } }
.card .kind, .card h4, .kin h4 { font-size: 0.75rem; }
.card .chs small, .kin .t small { font-size: 0.75rem; }
.card .by, .card .out { font-size: 0.78rem; }
.rail-foot { font-size: 0.75rem; }
.kin .cv.type span { display: none; }
.node .cv.type span { font-size: 12px; word-break: auto-phrase; }
.node.tiny .cv.type span { visibility: hidden; }
@media (max-width: 760px) {
  .card.show { display: flex; flex-direction: column; overflow: hidden; }
  .card .card-body { overflow: auto; overscroll-behavior: contain; min-height: 0; flex: 1; padding-bottom: env(safe-area-inset-bottom); }
}
@media (pointer: coarse) { .card .rel button { position: relative; } .card .rel button::before { content: ""; position: absolute; inset: -8px -2px; } .card .rel { gap: 0.9rem 0.4rem; } }

/* 6周目 */
:root.night .cv img { filter: brightness(0.82) saturate(0.9); }
.kin .cv.type { background: color-mix(in srgb, var(--tint, #b9bfc4) 40%, var(--paper)); }
/* 面の見出しは、柱・タブと同じことを言うので見た目からは外す（読み上げには残す） */
.panel-head { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); padding: 0 !important; box-shadow: none !important; background: none !important; }
:is(#p-contents, #p-search) .list { padding-top: 2.6rem; }
@media (max-width: 760px) { :is(#p-contents, #p-search) .list { padding-top: 1.4rem; } }

/* 7周目 */
.map { -webkit-mask-image: linear-gradient(90deg, transparent, #000 90px, #000 calc(100% - 90px), transparent), linear-gradient(transparent, #000 90px, #000 calc(100% - 90px), transparent); -webkit-mask-composite: source-in; mask-image: linear-gradient(90deg, transparent, #000 90px, #000 calc(100% - 90px), transparent), linear-gradient(transparent, #000 90px, #000 calc(100% - 90px), transparent); mask-composite: intersect; }
.card .chs small { text-wrap: wrap; }
.node:focus-visible .lb { visibility: visible !important; opacity: 1 !important; }
.node.long .cv.type span { visibility: hidden; }
:is(#p-contents, #p-search) .list .n { color: var(--ink-faint); }
@media (max-width: 760px) { .tab[aria-selected="true"] { background: color-mix(in srgb, var(--accent) 12%, var(--paper)); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent); } }

/* スマホの地図は画面いっぱいに固定。ページのピンチ拡大は止める */
html.map-open { touch-action: pan-x pan-y; }
#p-contents { touch-action: pan-x pan-y; }
@media (max-width: 760px), (pointer: coarse) and (max-height: 500px) {
  html.map-open, html.map-open body { overflow: hidden; height: 100%; overscroll-behavior: none; }
  html.map-open .panel.is-map:not([hidden]) { position: fixed; inset: 0; z-index: 900; background: var(--paper); }
  html.map-open .panel.is-map .map { height: 100dvh; }
  html.map-open .rail { transform: translateX(-50%); opacity: 1; pointer-events: auto; }
  html.map-open.sheet-open .rail, html.map-open body.sheet-open .rail { transform: translateX(-50%) translateY(140%); opacity: 0; pointer-events: none; }
}
/* 文字の表紙: 題が入らないとき（長い・小さい）は、紙を分野の色で塗る */
.node.long .cv.type, .node.tiny .cv.type { background: color-mix(in srgb, var(--tint, #b9bfc4) 40%, var(--paper)); }

/* 8周目: 文字の表紙は「題だけの本」に見せる（紙の地に分野の色の背） */
.node.long .cv.type, .node.tiny .cv.type, .map.far .node .cv.type, .kin .cv.type { background: var(--paper); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tint, #b9bfc4) 55%, transparent), inset 4px 0 0 color-mix(in srgb, var(--tint, #b9bfc4) 85%, transparent); }
.card .hero .cv.type span { display: none; }
.card .hero .cv.type { background: var(--paper); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tint, #b9bfc4) 55%, transparent), inset 5px 0 0 color-mix(in srgb, var(--tint, #b9bfc4) 85%, transparent); }

/* 9周目: 横向きのスマホにも下のタブ */
@media (pointer: coarse) and (max-height: 500px) {
  .atlas { display: block; padding: 0; }
  .rail { position: fixed; z-index: 980; left: 50%; top: auto; bottom: calc(12px + env(safe-area-inset-bottom)); height: auto; width: auto; flex-direction: row; padding: 4px; border-radius: 99px; transform: translateX(-50%); background: linear-gradient(color-mix(in srgb, var(--paper) 92%, transparent) 0 0), var(--grain) 0 0 / 180px, var(--paper); box-shadow: 0 0 0 1px var(--rule), 0 8px 24px #00000014; }
  .rail-foot { display: none; }
  .tabs { flex-direction: row; gap: 2px; }
  .tab { width: auto; padding: 0.7rem 1.1rem; border-radius: 99px; }
  .tab::before { display: none; }
  .tab[aria-selected="true"] { background: color-mix(in srgb, var(--accent) 12%, var(--paper)); }
  .card { position: fixed; left: auto; right: 0.7rem; top: 0.7rem; bottom: 0.7rem; width: 20rem; max-height: none; }
  .zoom { display: none; }
}
/* 文字の表紙: 白い空箱に見えないよう、分野の色を薄く敷いて背を濃く */
.cv.type, .node .cv.type, .node.long .cv.type, .node.tiny .cv.type, .map.far .node .cv.type, .kin .cv.type, .card .hero .cv.type { background: color-mix(in srgb, var(--tint, #b9bfc4) 26%, var(--paper)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tint, #b9bfc4) 55%, transparent), inset 5px 0 0 color-mix(in srgb, var(--tint, #b9bfc4) 90%, transparent); }
.node { z-index: 100; }
.node .lb { z-index: 2; }

/* 10周目: 地図を開いている間は、タブを決して隠さない。札はタブの上に開く */
html.map-open .rail, html.map-open .rail.away, html.map-open body.sheet-open .rail { transform: translateX(-50%) !important; opacity: 1 !important; pointer-events: auto !important; }
@media (max-width: 760px), (pointer: coarse) and (max-height: 500px) {
  html.map-open .card { bottom: calc(80px + env(safe-area-inset-bottom)); border-radius: 12px; left: 8px; right: 8px; max-height: calc(52% - 40px); }
}

/* 目次の、まとまりの見出し（はじめにの Theme と同じ七つ） */
:is(#p-contents, #p-search) .list li.theme-head { display: flex; align-items: baseline; gap: 0.8rem; padding: 3.2rem 0 0.6rem; border: 0; scroll-margin-top: 1.6rem; }
:is(#p-contents, #p-search) .list li.theme-head:first-child { padding-top: 0.4rem; }
:is(#p-contents, #p-search) .list li.theme-head .th-en { font-family: "Newsreader", serif; font-style: italic; font-size: 1.05rem; color: var(--accent); }
:is(#p-contents, #p-search) .list li.theme-head .th-t { font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.12em; color: var(--ink-faint); }
:is(#p-contents, #p-search) .list li.theme-head + li a { border-top: 0; }

/* はじめにの入口から来たときの戻る道 */
.back-pill { position: fixed; z-index: 990; left: 1rem; top: 1rem; padding: 0.55rem 1rem; border-radius: 99px; font-family: var(--sans); font-size: 0.78rem; letter-spacing: 0.04em; color: var(--ink-soft); text-decoration: none; background: linear-gradient(color-mix(in srgb, var(--paper) 92%, transparent) 0 0), var(--grain) 0 0 / 180px, var(--paper); box-shadow: 0 0 0 1px var(--rule), 0 6px 18px #00000012; }
@media (hover: hover) { .back-pill:hover { color: var(--accent); } }
@media (min-width: 761px) { .back-pill { left: auto; right: 1.4rem; top: 1.2rem; } }

/* さがす（2026-10-24）: 目次と同じ組みの一覧に、細い罫の入力欄。スマホの下のタブでは虫めがねだけ */
.tab-ic { display: none; }
#p-search .s-box { box-sizing: content-box; max-width: 34rem; padding-top: 2.6rem; padding-right: var(--side); }
#p-search .s-label { display: block; font-family: "Newsreader", serif; font-style: italic; font-size: 1.05rem; color: var(--accent); margin-bottom: 0.7rem; }
#p-search input { width: 100%; box-sizing: border-box; font: inherit; font-size: 1.1rem; letter-spacing: 0.04em; color: var(--ink); background: transparent; border: 0; border-bottom: 1px solid var(--rule); border-radius: 0; padding: 0.5rem 0; outline: none; -webkit-appearance: none; appearance: none; transition: border-color .4s ease; }
#p-search input:focus { border-bottom-color: var(--accent); }
#p-search input::placeholder { color: var(--ink-faint); opacity: .7; }
#p-search .s-count { font-family: var(--sans); font-size: 0.75rem; letter-spacing: 0.06em; color: var(--ink-faint); margin: 0.8rem 0 0; min-height: 1.2em; }
#p-search .list { padding-top: 0.4rem; padding-bottom: 0; }
#p-search .list li:first-child a { border-top: 0; }
#p-search mark { background: none; color: var(--accent); box-shadow: inset 0 -1px 0 color-mix(in srgb, var(--accent) 50%, transparent); }
@media (max-width: 760px), (pointer: coarse) and (max-height: 500px) {
  .tab-search .tab-en { display: none; }
  .tab-search .tab-ic { display: block; }
  .tab-search { padding-left: 0.95rem; padding-right: 0.95rem; align-items: center; }
  #p-search .s-box { padding: 1.6rem var(--side) 0; max-width: none; }
  #p-search input { font-size: 16px; } /* iPhone で、打つときに画面が拡大しないように */
}
#p-search input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; width: 14px; height: 14px; margin-left: 0.6rem; cursor: pointer; background: var(--ink-faint); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M2 2l10 10M12 2L2 12' stroke='%23000' stroke-width='1.2' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M2 2l10 10M12 2L2 12' stroke='%23000' stroke-width='1.2' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat; }
/* 打っている間は、下に浮かぶものを引く。さがす面は画面いっぱいの高さにして、扉がのぞかないように */
@media (max-width: 760px), (pointer: coarse) and (max-height: 500px) {
  html.typing .rail { transform: translateX(-50%) translateY(140%); opacity: 0; pointer-events: none; }
  html.typing .to-top { opacity: 0; visibility: hidden; }
  #p-search { min-height: 100svh; }
}
/* さがすの入口: はじめにの Theme と、いちばん下の星座（2026-10-24 ayu） */
#p-search .s-themes, #p-search .s-sky { box-sizing: content-box; max-width: 34rem; padding-left: max(3rem, calc(38.2vw - var(--side) - var(--rail))); padding-right: var(--side); }
#p-search .s-themes ol { list-style: none; margin: 0; padding: 0; }
#p-search .s-themes a { display: flex; align-items: baseline; gap: 0.8rem; width: 100%; padding: 0.95rem 0; border: 0; border-top: 1px solid color-mix(in srgb, var(--rule) 60%, transparent); background: none; font: inherit; color: var(--ink); text-align: left; cursor: pointer; -webkit-tap-highlight-color: transparent; }
#p-search .s-themes li:first-child a { border-top: 0; }
#p-search .s-themes .th-en { font-family: "Newsreader", serif; font-style: italic; font-size: 1.12rem; color: var(--accent); min-width: 7.6rem; }
#p-search .s-themes .th-t { font-size: 0.95rem; letter-spacing: 0.08em; color: var(--ink-soft); }
#p-search .s-themes .s-label { margin: 0.6rem 0 0.2rem; }
#p-search .s-themes[hidden] { display: none; }
#p-search .s-list:empty, #p-search #s-list:empty { min-height: 0; padding-bottom: 0; }
#p-search .s-back { font: inherit; background: none; border: 0; padding: 0; margin-right: 1rem; color: var(--ink-soft); cursor: pointer; }
#p-search .s-count span[lang="en"] { font-family: "Newsreader", serif; font-style: italic; font-size: 1rem; color: var(--accent); }
#p-search .s-sky { margin: 4rem 0 0; padding-bottom: 10rem; }
@media (max-width: 760px), (pointer: coarse) and (max-height: 500px) { #p-search .s-themes, #p-search .s-sky { padding-left: var(--side); max-width: none; } #p-search .s-themes .th-en { min-width: 7rem; } }
#p-search .s-sky svg { display: block; width: 100%; height: auto; }
#p-search .s-sky .vision-fig { margin: 0; }
#p-search .s-themes a { text-decoration: none; }
#p-search .s-themes .th-t { flex: 1; }
#p-search .s-themes .th-go { color: var(--ink-faint); transition: transform .4s ease, color .4s ease; }
@media (hover: hover) and (pointer: fine) { #p-search .s-themes a:hover .th-go { color: var(--accent); transform: translateX(3px); } #p-search .s-themes a:hover .th-t { color: var(--ink); } }
@media (hover: none) { #p-search .s-themes a:active { opacity: .6; } }
#p-search .s-themes .s-label { display: flex; align-items: baseline; gap: 0.8rem; }
#p-search .s-hint { font-family: var(--sans); font-style: normal; font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ink-faint); }
/* さがすの Themes から目次へ来たとき、そのまとまりの見出しにしばらく印 */
#p-contents .list li.theme-head::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: left; pointer-events: none; }
#p-contents .list li.theme-head.here::after { animation: th-line 3s ease both; }
@keyframes th-line { 0% { transform: scaleX(0); transform-origin: left; } 25%, 60% { transform: scaleX(1); transform-origin: left; } 61% { transform: scaleX(1); transform-origin: right; } 100% { transform: scaleX(0); transform-origin: right; } }
@media (prefers-reduced-motion: reduce) { #p-contents .list li.theme-head.here::after { animation: none; } }
/* 目次を眺めている間、いまのまとまりの名前を上に留める（上の余白は流して、名前の行だけ残す） */
#p-contents .list li.theme-head { position: sticky; top: 0; z-index: 5; margin-top: 2.6rem; padding: 0.7rem 0 0.7rem; }
#p-contents .list li.theme-head.stuck { background: linear-gradient(color-mix(in srgb, var(--paper) 92%, transparent) 0 0), var(--grain) 0 0 / 180px, var(--paper); box-shadow: 0 1px 0 color-mix(in srgb, var(--rule) 60%, transparent); }
#p-contents .list li.theme-head:first-child { margin-top: 0; padding-top: 0.4rem; }
#p-contents .list li.theme-head { scroll-margin-top: 0; }
/* さがすの入力欄: 虫めがねを中に置き、線を一段濃く。Themes とのあいだを広く */
#p-search .s-field { display: flex; align-items: center; gap: 0.6rem; border-bottom: 1px solid var(--ink-faint); transition: border-color .4s ease; }
#p-search .s-field:focus-within { border-bottom-color: var(--accent); }
#p-search .s-field input { border-bottom: 0; }
#p-search .s-ic { flex: none; color: var(--ink-soft); }
#p-search .s-themes { margin-top: 1.6rem; }