@layer reset, base, layout, components, responsive;
@layer reset {
  *,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body,h1,h2,h3,p,ul,ol{margin:0}ul,ol{padding:0}button{font:inherit;color:inherit}button{cursor:pointer}a{color:inherit} [hidden]{display:none!important}
}
@layer base {
  :root{color-scheme:dark;--night:#081019;--deep:#0d1722;--panel:#111e2b;--panel2:#172737;--paper:#f1eadb;--soft:#c9c4b9;--mist:#8f9baa;--line:#304258;--line2:#1c2d40;--gold:#e7bd64;--cyan:#8dd7d2;--rust:#e18462;--violet:#b4abe2;--display:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",Georgia,serif;--body:"Avenir Next",Avenir,"Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;--mono:ui-monospace,"SFMono-Regular",Menlo,monospace;--ease:cubic-bezier(.22,.72,.18,1)}
  body{min-width:320px;min-height:100vh;color:var(--paper);background:radial-gradient(circle at 78% 8%,rgba(42,76,100,.28),transparent 34rem),radial-gradient(circle at 8% 58%,rgba(118,65,47,.12),transparent 36rem),var(--night);font:15px/1.55 var(--body)}
  body::before{position:fixed;inset:0;z-index:-1;content:"";opacity:.2;pointer-events:none;background-image:radial-gradient(rgba(241,234,219,.32) .55px,transparent .55px);background-size:8px 8px;mask-image:linear-gradient(#000,transparent 80%)}
  button{-webkit-tap-highlight-color:transparent}:focus-visible{outline:2px solid var(--paper);outline-offset:4px}.skip-link{position:fixed;z-index:20;top:10px;left:10px;padding:10px 14px;color:var(--night);background:var(--paper);transform:translateY(-160%)}.skip-link:focus{transform:none}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
}
@layer layout {
  .topbar{position:sticky;top:0;z-index:8;display:flex;justify-content:space-between;align-items:center;min-height:64px;padding:12px clamp(18px,4vw,64px);border-bottom:1px solid var(--line2);background:rgba(8,16,25,.94);backdrop-filter:blur(12px)}
  .wordmark{display:flex;color:var(--paper);font-weight:760;letter-spacing:-.04em;text-decoration:none}.wordmark span:last-child{color:var(--gold);font-weight:480}.save-state{display:flex;align-items:center;gap:8px;color:var(--mist);font:9px var(--mono);letter-spacing:.12em}.save-state span{width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 10px var(--gold)}
  .intro{display:grid;place-content:center;min-height:min(620px,75vh);padding:82px 22px;text-align:center}.edition,.view-label,.sheet-index{color:var(--gold);font:10px var(--mono);letter-spacing:.16em}.intro h1{margin:24px 0 22px;font:500 clamp(3.5rem,9vw,8.5rem)/.94 var(--display);letter-spacing:-.04em;text-wrap:balance}.intro h1 span{color:var(--soft)}.world-line{font:500 clamp(1.15rem,2vw,1.75rem)/1.7 var(--display)}.truth-note{margin-top:18px;color:var(--mist);font-size:11px}.start-link{display:inline-flex;justify-self:center;align-items:center;gap:9px;min-height:44px;margin-top:24px;padding:10px 15px;border:1px solid var(--line);color:var(--paper);font-size:11px;text-decoration:none}.start-link:hover{border-color:var(--gold);color:var(--gold)}
  .view-tabs{position:sticky;top:64px;z-index:7;display:flex;justify-content:center;gap:5px;padding:11px 18px;border-block:1px solid var(--line2);background:rgba(8,16,25,.95)}.view-tabs button{min-height:42px;padding:8px 18px;border:0;border-bottom:1px solid transparent;color:var(--mist);background:transparent}.view-tabs button:hover{color:var(--paper)}.view-tabs button.is-active{border-color:var(--gold);color:var(--gold)}
  .view{max-width:1480px;margin:0 auto;padding:clamp(64px,8vw,110px) clamp(18px,4vw,64px) 120px}.view-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:46px}.view-heading h2{margin-top:10px;font:500 clamp(2.4rem,5vw,5rem)/1 var(--display)}.view-heading>p{max-width:42ch;color:var(--mist);font-size:12px}
  .site-footer{display:flex;justify-content:space-between;gap:20px;padding:28px clamp(18px,4vw,64px);border-top:1px solid var(--line2);color:var(--mist);font:9px var(--mono);letter-spacing:.06em}
}
@layer components {
  .route-list{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:30px 72px;list-style:none}.route-list::before{position:absolute;top:0;bottom:0;left:50%;width:1px;content:"";background:linear-gradient(transparent,var(--gold) 8%,var(--gold) 92%,transparent);opacity:.35}.route-card{position:relative;min-width:0;border-top:1px solid var(--line);padding-top:1px}.route-card::before{position:absolute;top:-4px;width:7px;height:7px;border-radius:50%;content:"";background:var(--night);border:1px solid var(--gold)}.route-card:nth-child(odd)::before{right:-40px}.route-card:nth-child(even)::before{left:-40px}.route-card.is-anchor{grid-column:1/-1;width:min(760px,100%);justify-self:center;border-color:var(--gold);box-shadow:0 -8px 28px rgba(231,189,100,.07)}.route-card.is-anchor::before{left:50%;transform:translateX(-50%);background:var(--gold);box-shadow:0 0 12px var(--gold)}
  .world-entry{display:grid;grid-template-columns:44px 1fr auto;gap:15px;align-items:start;width:100%;min-height:132px;padding:16px 12px;border:0;background:transparent;text-align:left}.world-entry:hover{background:rgba(231,189,100,.045)}.route-no{align-self:start;color:var(--gold);font:10px var(--mono)}.entry-copy{display:block}.world-entry strong{display:block;font:500 clamp(1.28rem,2vw,1.78rem)/1.25 var(--display)}.world-entry small{display:block;margin-top:4px;color:var(--mist);font:9px var(--mono)}.world-entry .entry-axis{margin:0 0 7px;color:var(--gold);letter-spacing:.08em}.entry-question{display:block;margin-top:7px;color:var(--soft);font-size:12px;line-height:1.55}.world-entry .seed-title{margin-top:9px;color:var(--mist);font-family:var(--body);letter-spacing:0}.route-count{padding-top:20px;color:var(--gold);font:500 1.5rem var(--display);text-align:right}.route-count small{font-size:7px;letter-spacing:.08em}
  .route-rail{position:relative;display:flex;gap:7px;overflow-x:auto;padding:2px 12px 18px 70px;scrollbar-width:thin}.route-rail::before{position:absolute;left:32px;top:18px;width:30px;height:1px;content:"";background:var(--line)}.route-rail button{display:grid;grid-template-columns:auto 1fr auto;gap:7px;align-items:center;flex:0 0 auto;max-width:260px;min-height:39px;padding:7px 9px;border:1px solid var(--line2);background:#0c1722;color:var(--soft);font-size:10px;text-align:left}.route-rail button:hover{border-color:var(--gold);color:var(--paper)}.route-rail button small{color:var(--mist);font:8px var(--mono)}
  .status-dot{width:7px;height:7px;border-radius:50%;background:var(--gold)}.stage-seed_proposal{background:var(--cyan)}.stage-branch_proposal{background:var(--violet)}.stage-title_slate{background:var(--gold)}
  .concept-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.concept-card{padding:25px;border-top:1px solid var(--cyan);background:rgba(13,23,34,.58)}.concept-card header{display:flex;justify-content:space-between;gap:20px}.concept-card h3{font:500 1.5rem var(--display)}.concept-card header span{color:var(--cyan);font:8px var(--mono)}.concept-card>p{margin:12px 0 20px;color:var(--mist)}.concept-card ol{list-style:none}.concept-card li{border-top:1px solid var(--line2)}.concept-card li button{display:grid;grid-template-columns:34px 1fr;width:100%;min-height:44px;padding:9px 0;border:0;background:transparent;text-align:left}.concept-card li button:hover{color:var(--cyan)}.concept-card li span{color:var(--cyan);font:9px var(--mono)}.concept-card li strong{font-size:11px}
  .mainline-list{list-style:none;border-top:1px solid var(--gold)}.mainline-list li{border-bottom:1px solid var(--line)}.mainline-list button{display:grid;grid-template-columns:80px 1fr auto;gap:20px;align-items:center;width:100%;min-height:105px;padding:18px;border:0;background:transparent;text-align:left}.mainline-list button:hover{background:rgba(231,189,100,.04)}.roman{color:var(--gold);font:500 2rem var(--display)}.mainline-list strong{display:block;font:500 clamp(1.25rem,2vw,2rem) var(--display)}.mainline-list small{display:block;margin-top:5px;color:var(--mist)}
  .scrim{position:fixed;inset:0;z-index:12;background:rgba(1,6,11,.74)}.sheet{position:fixed;top:0;right:0;z-index:13;width:min(600px,96vw);height:100dvh;padding:64px clamp(24px,4vw,52px) 70px;overflow-y:auto;border-left:1px solid var(--gold);background:#101c29;box-shadow:-30px 0 80px rgba(0,0,0,.45);transform:translateX(105%);visibility:hidden;transition:transform .35s var(--ease),visibility .35s}.sheet.is-open{transform:none;visibility:visible}.sheet-close{position:absolute;top:17px;right:18px;width:43px;height:43px;border:1px solid var(--line);background:transparent;font-size:22px}.sheet-close:hover{border-color:var(--paper)}.sheet h2{margin:18px 0 7px;overflow-wrap:anywhere;font:500 clamp(2.15rem,4vw,3.4rem)/1.1 var(--display);letter-spacing:-.025em}.sheet-subtitle{color:var(--mist);font:9px var(--mono)}
  .status-block{display:grid;gap:5px;margin:30px 0;padding:20px;color:var(--night);background:var(--gold)}.status-block.stage-seed_proposal{background:var(--cyan)}.status-block.stage-branch_proposal{background:var(--violet)}.status-block.stage-title_slate{background:var(--gold)}.status-block strong{font:10px var(--mono);letter-spacing:.08em}.status-block span{font-size:12px}
  .entry-lead{margin-top:14px;color:var(--soft);font:500 1.15rem/1.65 var(--display)}.fact{padding:24px 0;border-top:1px solid var(--line)}.fact h3{margin-bottom:11px;color:var(--gold);font:9px var(--mono);letter-spacing:.12em}.fact>p{color:var(--soft)}.hero-fact{margin-top:26px;padding:24px;background:var(--gold);color:var(--night);border:0}.hero-fact h3,.hero-fact>p{color:var(--night)}.hero-fact>p{font:500 1.25rem/1.6 var(--display)}.seed-song strong{display:block;margin-bottom:8px;color:var(--paper);font:500 1.55rem/1.35 var(--display)}.seed-song p+p{color:var(--mist);font-size:12px}.depth-details{margin:8px 0 20px;border-block:1px solid var(--line)}.depth-details summary{display:flex;align-items:center;justify-content:space-between;min-height:54px;color:var(--gold);cursor:pointer;font-size:12px;list-style:none}.depth-details summary::-webkit-details-marker{display:none}.depth-details summary::after{content:"＋";font-size:18px}.depth-details[open] summary::after{content:"−"}.depth-details .fact{padding-inline:4px}
  .album-links{list-style:none}.album-links button{display:grid;grid-template-columns:10px 1fr auto;gap:12px;align-items:start;width:100%;min-height:56px;padding:12px 0;border:0;border-top:1px solid var(--line2);background:transparent;text-align:left}.album-links button:hover strong{color:var(--gold)}.album-links strong{display:block;font-size:12px}.album-links small{display:block;margin-top:3px;color:var(--mist);font:8px var(--mono)}.door-links{display:flex;flex-wrap:wrap;gap:7px}.door-links button,.back-album{min-height:40px;padding:8px 11px;border:1px solid var(--line);background:transparent;font-size:11px}.door-links button:hover,.back-album:hover{border-color:var(--gold);color:var(--gold)}.door-links span{margin-right:8px;color:var(--gold);font:9px var(--mono)}
  .slate-note{margin:0 0 15px;color:var(--mist)!important;font:8px var(--mono);letter-spacing:.06em}.track-list{list-style:none;border-top:1px solid var(--line2)}.track-list li{display:grid;grid-template-columns:38px 1fr;border-bottom:1px solid var(--line2)}.track-no{padding-top:15px;color:var(--gold);font:9px var(--mono)}.track-list button{display:block;width:100%;padding:13px 0;border:0;background:transparent;text-align:left}.track-list button:hover strong{color:var(--gold)}.track-list strong{display:block;font:500 15px/1.35 var(--display)}.track-list small{display:block;margin-top:4px;color:var(--soft);font-size:10px;line-height:1.45}.track-list em{display:block;margin-top:6px;color:var(--mist);font:normal 8px var(--mono);letter-spacing:.04em}.load-error{padding:60px;color:#ffc0aa}
}
@layer responsive {
  @media(max-width:820px){.intro{min-height:520px}.view-heading{display:block}.view-heading>p{margin-top:14px}.route-list{grid-template-columns:1fr;gap:22px}.route-list::before{left:19px}.route-card,.route-card.is-anchor{grid-column:1;width:100%;padding-left:28px}.route-card::before,.route-card:nth-child(odd)::before,.route-card:nth-child(even)::before,.route-card.is-anchor::before{left:16px;right:auto;transform:none}.route-rail{padding-left:58px}.concept-list{grid-template-columns:1fr}.site-footer{display:block}.site-footer p+p{margin-top:8px}}
  @media(max-width:560px){.topbar{min-height:58px}.save-state{max-width:190px;text-align:right}.intro{min-height:470px;padding:65px 18px}.intro h1{font-size:clamp(3rem,17vw,5rem)}.view-tabs{top:58px}.view-tabs button{flex:1;padding-inline:5px;font-size:11px}.view{padding:62px 15px 90px}.view-heading h2{font-size:2.7rem}.world-entry{grid-template-columns:34px 1fr auto;padding-inline:5px}.world-entry strong{font-size:1.2rem}.route-rail{padding-left:43px}.mainline-list button{grid-template-columns:45px 1fr auto;gap:12px;padding-inline:5px}.sheet{top:auto;bottom:0;width:100%;height:min(91dvh,860px);padding:54px 20px 60px;border-left:0;border-top:1px solid var(--gold);transform:translateY(105%);border-radius:14px 14px 0 0}.sheet::before{position:absolute;top:10px;left:50%;width:38px;height:3px;border-radius:3px;content:"";background:var(--line);transform:translateX(-50%)}.sheet h2{font-size:2.35rem}.status-block{margin-top:24px}.track-list li{grid-template-columns:32px 1fr}}
  @media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}
}


@layer authoring {
  :root{--bar-h:70px}body{padding-bottom:calc(var(--bar-h) + env(safe-area-inset-bottom))}.topbar,main,.site-footer{width:min(100%,560px);margin-inline:auto}.topbar{display:grid;grid-template-columns:1fr auto auto;gap:9px;padding-top:calc(9px + env(safe-area-inset-top))}.save-state{max-width:120px;letter-spacing:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.save-state.is-saved{color:var(--cyan)}.edit-toggle{min-width:88px;min-height:44px;padding:8px 11px;border:1px solid var(--gold);color:var(--night);background:var(--gold);font-size:11px;font-weight:750}.edit-toggle[aria-pressed="true"]{color:var(--gold);background:transparent}
  .intro{min-height:470px;padding:65px 18px}.intro h1{font-size:clamp(3rem,17vw,5rem)}.view{padding:54px 15px 90px}.view-heading{display:block}.view-heading>p{margin-top:12px;text-align:left}.route-list{grid-template-columns:1fr;gap:20px}.route-list::before{left:19px}.route-card,.route-card.is-anchor{grid-column:1;width:100%;padding-left:27px}.route-card::before,.route-card:nth-child(odd)::before,.route-card:nth-child(even)::before,.route-card.is-anchor::before{left:16px;right:auto;transform:none}.route-rail{padding-left:44px}.concept-list{grid-template-columns:1fr}.concept-head,.fact-heading{display:flex;justify-content:space-between;gap:10px;align-items:center}
  .mini-action{min-height:44px;padding:7px 13px;border:1px solid var(--line);background:transparent;font-size:11px}.sheet-actions{display:flex;gap:8px;margin:18px 0 6px}.suggest-action{border-style:dashed}.fact-heading h3{margin:0}.track-list li{grid-template-columns:32px minmax(0,1fr) auto}.track-open{min-height:66px}.reorder{display:grid;grid-template-columns:44px}.reorder button{min-height:44px;border:0;border-left:1px solid var(--line2);background:transparent;color:var(--mist)}
  .action-bar{position:fixed;right:0;bottom:0;left:0;z-index:20;display:grid;grid-template-columns:repeat(4,1fr);width:min(100%,560px);height:calc(var(--bar-h) + env(safe-area-inset-bottom));margin-inline:auto;padding:5px 8px env(safe-area-inset-bottom);border:1px solid var(--line);background:rgba(8,16,25,.97);backdrop-filter:blur(15px)}.action-bar button{position:relative;display:grid;place-content:center;gap:2px;min-height:44px;border:0;color:var(--mist);background:transparent;font-size:9px}.action-bar button>span{color:var(--paper);font-size:18px;line-height:1}.action-bar b{position:absolute;top:4px;left:calc(50% + 10px);min-width:16px;padding:2px 4px;border-radius:99px;color:var(--night);background:var(--gold);font:8px var(--mono)}
  .sheet{top:auto;bottom:0;left:0;width:min(100%,560px);max-height:min(91dvh,900px);height:auto;margin-inline:auto;padding:54px 18px calc(28px + env(safe-area-inset-bottom));border:0;border-top:1px solid var(--gold);transform:translateY(105%)}#detail-sheet{padding-bottom:calc(var(--bar-h) + 28px + env(safe-area-inset-bottom))}.sheet.is-open{transform:translateY(0)}.local-note,.warning{margin:14px 0 22px;padding-right:42px;color:var(--mist);font-size:12px}.warning{color:#ff9179}form>label{display:grid;gap:7px;margin-bottom:16px}form label>span,fieldset legend{color:var(--soft);font-size:11px}input,textarea,select{width:100%;min-height:48px;padding:11px 12px;border:1px solid var(--line);border-radius:0;color:var(--paper);background:var(--night);font-size:16px}textarea{min-height:88px;resize:vertical}fieldset{margin:20px 0;padding:0;border:0}.check-grid{max-height:230px;overflow-y:auto;border-block:1px solid var(--line)}.check-grid label{display:grid;grid-template-columns:44px 1fr;align-items:center;min-height:48px;border-bottom:1px solid var(--line2)}.check-grid input{width:20px;min-height:20px;margin:auto;accent-color:var(--gold)}
  .form-actions{position:sticky;bottom:calc(-28px - env(safe-area-inset-bottom));display:grid;grid-template-columns:1fr 1.4fr;gap:8px;margin:28px -18px -28px;padding:12px 18px calc(16px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--panel)}.form-actions button{min-height:50px;border:1px solid var(--gold);color:var(--night);background:var(--gold);font-weight:720}.form-actions .secondary{color:var(--soft);border-color:var(--line);background:transparent}.form-actions .danger{border-color:#ff9179;background:#ff9179}.form-actions button:disabled{opacity:.38;cursor:not-allowed}
  .add-grid,.tool-list,.inbox-list{display:grid;gap:8px;margin-top:22px}.add-grid button,.tool-list button{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;min-height:64px;padding:12px 14px;border:1px solid var(--line);background:var(--deep);text-align:left}.add-grid span,.tool-list span{color:var(--mist);font-size:9px}.inbox-list article{padding:16px;border-block:1px solid var(--line);background:var(--deep)}.inbox-list article>p{display:flex;justify-content:space-between;color:var(--mist);font-size:10px}.inbox-list h3{margin-top:10px;color:var(--gold);font:500 1.2rem var(--display)}.inbox-list article>div{margin-top:7px;color:var(--soft);font-size:12px}.inbox-list time{display:block;margin-top:10px;color:var(--mist);font:8px var(--mono)}.empty-state{padding:30px 8px;color:var(--mist);text-align:center}.error-message{margin-top:14px;padding:12px;color:#ff9179;border:1px solid #ff9179;white-space:pre-wrap}.toast{position:fixed;right:14px;bottom:calc(var(--bar-h) + env(safe-area-inset-bottom) + 12px);left:14px;z-index:40;max-width:500px;margin-inline:auto;padding:12px;color:var(--night);background:var(--paper);text-align:center;font-size:12px}body.sheet-open{overflow:hidden}@media(max-width:400px){.save-state{max-width:78px}}
}

/* Keep the shared detail/editor sheet visible after either desktop or mobile
   off-canvas transforms are activated. Unlayered rules outrank named layers. */
.sheet.is-open { transform: translate(0, 0) !important; }
body.sheet-open { overflow: hidden; }