:root{color-scheme:dark;--ink-950: oklch(13.5% .012 65);--ink-925: oklch(15% .013 65);--ink-900: oklch(16.5% .014 65);--ink-850: oklch(19% .016 65);--ink-800: oklch(22% .018 65);--ink-700: oklch(27% .02 65);--sand-50: oklch(96% .016 85);--sand-100: oklch(92% .024 85);--sand-200: oklch(84% .032 82);--sand-300: oklch(74% .038 80);--sand-400: oklch(64% .036 78);--sand-500: oklch(54% .032 76);--gold-300: oklch(86% .085 85);--gold-400: oklch(78% .12 82);--gold-500: oklch(70% .125 78);--ochre-500: oklch(62% .13 58);--lapis-400: oklch(66% .065 242);--danger: oklch(66% .15 28);--line: oklch(92% .024 85 / .14);--line-strong: oklch(92% .024 85 / .26);--line-gold: oklch(78% .12 82 / .36);--surface-solid: var(--ink-900);--surface-raised: var(--ink-850);--scrim: oklch(8% .01 65 / .62);--shadow-panel: 0 24px 80px oklch(5% .01 65 / .55);--shadow-lift: 0 8px 28px oklch(5% .01 65 / .4);--font-display: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;--font-display-cn: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;--font-body: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;--font-mono: "SFMono-Regular", "IBM Plex Mono", "Menlo", "Consolas", monospace;--text-xs: .6875rem;--text-sm: .8125rem;--text-base: .9375rem;--text-md: 1.0625rem;--text-lg: 1.25rem;--text-xl: 1.625rem;--text-2xl: 2.125rem;--text-3xl: 2.75rem;--text-display: clamp(2.5rem, 5.6vw, 4.6rem);--text-display-s: clamp(1.9rem, 4.4vw, 3.25rem);--tracking-wide: .14em;--tracking-wider: .2em;--leading-tight: 1.08;--leading-body: 1.8;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--space-20: 80px;--space-24: 96px;--radius-xs: 2px;--radius-sm: 4px;--radius-md: 8px;--radius-pill: 999px;--dur-fast: .14s;--dur-base: .24s;--dur-slow: .36s;--dur-scene: .9s;--ease-out: cubic-bezier(.2, .8, .2, 1);--ease-in-out: cubic-bezier(.65, 0, .35, 1);--ease-soft: cubic-bezier(.33, 1, .68, 1);--topbar-h: 72px;--rail-w: 224px;--drawer-w: min(440px, 94vw);--hud-pad-x: clamp(20px, 4vw, 56px);--z-scene: 0;--z-atmosphere: 1;--z-hotspots: 5;--z-map: 6;--z-topbar: 10;--z-rail: 10;--z-hud: 10;--z-scrim: 18;--z-drawer: 20;--z-route: 29;--z-catalog: 30;--z-intro: 40;--z-loading: 50;--z-toast: 60}@media(max-width:900px){:root{--topbar-h: 62px;--rail-w: 0px}}@media(max-width:720px){:root{--hud-pad-x: 16px;--drawer-w: 100%;--text-display: clamp(2.25rem, 9.6vw, 3.4rem)}}@font-face{font-family:Cormorant Garamond;src:url(../fonts/cormorant-var.woff2) format("woff2");font-weight:300 700;font-style:normal;font-display:swap}@font-face{font-family:"Noto Serif SC";src:url(../fonts/noto-serif-sc-subset.woff2) format("woff2");font-weight:400 600;font-style:normal;font-display:swap}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--ink-950);color:var(--sand-100);font-family:var(--font-body);font-size:var(--text-base);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;overflow-x:clip}body{overflow:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:400;font-style:normal;line-height:1.15;letter-spacing:.005em;margin:0;color:var(--sand-50);overflow-wrap:anywhere;min-width:0}p{margin:0}button,input,textarea,select{font:inherit;color:inherit}button{-webkit-tap-highlight-color:transparent}a{color:var(--gold-300);text-decoration:none}::selection{background:var(--gold-400);color:var(--ink-950)}:focus-visible{outline:2px solid var(--gold-300);outline-offset:3px}[hidden]{display:none!important}*{scrollbar-width:thin;scrollbar-color:var(--ink-700) transparent}*::-webkit-scrollbar{width:8px;height:8px}*::-webkit-scrollbar-thumb{background:var(--ink-700);border-radius:8px}*::-webkit-scrollbar-track{background:transparent}.mono{font-family:var(--font-mono);font-size:var(--text-xs);font-weight:400;letter-spacing:var(--tracking-wide);text-transform:uppercase;color:var(--sand-400);font-variant-numeric:tabular-nums}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}.icon{width:18px;height:18px;display:block;flex:none}.icon--arrow{width:16px}.icon--back{width:15px}.app{position:fixed;inset:0;overflow:hidden;background:var(--ink-950);isolation:isolate}.scene{position:absolute;inset:0;display:block;width:100%;height:100%;z-index:var(--z-scene);touch-action:none;cursor:grab}.scene:active{cursor:grabbing}.atmosphere{position:absolute;inset:0;z-index:var(--z-atmosphere);pointer-events:none;background:radial-gradient(125% 95% at 50% 42%,transparent 44%,oklch(8% .01 65 / .42) 100%),linear-gradient(180deg,oklch(8% .01 65 / .18) 0%,transparent 16%,transparent 80%,oklch(8% .01 65 / .3) 100%)}.scene-fade{position:fixed;inset:0;z-index:15;display:grid;place-items:center;padding:var(--space-8);background:var(--ink-950);opacity:0;pointer-events:none;transition:opacity .28s var(--ease-out)}.scene-fade.is-active{opacity:1;pointer-events:auto}#scene-fade-label{max-width:80vw;color:var(--sand-400);font-family:var(--font-mono);font-size:.625rem;letter-spacing:.2em;text-align:center}.app.no-webgl .scene,.app.no-webgl [data-goto-stop]{display:none}.app.no-webgl{background:radial-gradient(90% 70% at 50% 30%,oklch(28% .04 62) 0%,transparent 70%),linear-gradient(180deg,var(--ink-900),var(--ink-950))}.atmosphere:after{content:"";position:absolute;inset:0;opacity:.032;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");background-size:160px 160px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:48px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-xs);background:transparent;color:var(--sand-100);font-family:var(--font-body);font-size:var(--text-sm);font-weight:500;letter-spacing:.035em;line-height:1;white-space:nowrap;cursor:pointer;transition:background-color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out)}.btn:hover{background:var(--ink-800);border-color:var(--line-strong)}.btn:active{transform:translateY(1px)}.btn--primary{background:var(--gold-400);border-color:var(--gold-400);color:var(--ink-950);font-weight:600}.btn--primary:hover{background:var(--gold-300);border-color:var(--gold-300);color:var(--ink-950)}.btn--ghost{border-color:var(--line);color:var(--sand-100)}.btn--ghost:hover{border-color:var(--line-strong);background:var(--ink-800)}.btn--small{min-height:38px;padding:0 14px;font-size:.75rem}.btn:disabled{opacity:.35;cursor:not-allowed;transform:none}.text-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 0;border:0;border-bottom:1px solid oklch(78% .12 82 / .28);border-radius:0;background:none;color:var(--sand-300);font-family:var(--font-body);font-size:var(--text-sm);letter-spacing:.04em;line-height:1.2;cursor:pointer;transition:color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}.text-btn:hover{color:var(--sand-50);border-color:var(--gold-400)}.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;padding:0;border:1px solid var(--line);border-radius:var(--radius-xs);background:#0c070447;color:var(--sand-200);cursor:pointer;transition:background-color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.icon-btn:hover{background:var(--ink-800);border-color:var(--line-strong);color:var(--sand-50)}#sound-btn .icon-sound-on{display:none}#sound-btn[aria-pressed=true]{color:var(--gold-300);border-color:var(--line-gold)}#sound-btn[aria-pressed=true] .icon-sound-on{display:block}#sound-btn[aria-pressed=true] .icon-sound-off{display:none}.loading{position:fixed;inset:0;z-index:var(--z-loading);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);padding:var(--space-8);text-align:center;background:radial-gradient(62% 52% at 50% 44%,var(--ink-900) 0%,var(--ink-950) 72%);opacity:1;visibility:visible;transition:opacity .7s var(--ease-soft),visibility 0s linear .7s}.loading.is-done{opacity:0;visibility:hidden}.loading__mark{width:52px;height:52px;color:var(--gold-400);opacity:.9;animation:breathe 3.6s var(--ease-in-out) infinite}.loading__mark svg{width:100%;height:100%}.loading__kicker{margin-top:var(--space-2);color:var(--sand-500);font-size:.625rem}.loading__title{margin:0;font-family:var(--font-display);font-size:var(--text-xl);color:var(--sand-100);letter-spacing:.02em}.loading__track{width:196px;height:1px;margin-top:var(--space-2);overflow:hidden;background:var(--line)}.loading__bar{display:block;width:0;height:100%;background:var(--gold-400);transition:width .32s var(--ease-out)}.loading__note{min-height:1.4em;font-family:var(--font-mono);font-size:.625rem;letter-spacing:var(--tracking-wide);color:var(--sand-500)}.intro{position:fixed;inset:0;z-index:var(--z-intro);display:flex;flex-direction:column;padding:clamp(20px,4vw,56px);padding-bottom:max(clamp(20px,4vw,48px),env(safe-area-inset-bottom));pointer-events:none;opacity:0;transition:opacity var(--dur-scene) var(--ease-soft)}.intro.is-visible{opacity:1}.intro.is-leaving{opacity:0;transition:opacity .68s var(--ease-out)}.intro__scrim{position:absolute;inset:0;background:linear-gradient(180deg,oklch(8% .01 65 / .58) 0%,transparent 24%,transparent 55%,oklch(8% .01 65 / .8) 100%),radial-gradient(90% 75% at 18% 88%,oklch(8% .01 65 / .75) 0%,transparent 62%)}.intro>*:not(.intro__scrim){position:relative;z-index:1}.intro__top{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-6)}.intro__brand{display:flex;align-items:center;gap:var(--space-3)}.intro__brand .brand__mark{width:32px;height:32px;color:var(--gold-400)}.intro__brand .mono{color:var(--sand-300);font-size:.625rem}.intro__coords{margin-top:2px;font-family:var(--font-mono);font-size:.5625rem;letter-spacing:.1em;color:var(--sand-500)}.intro__era{padding-top:4px;font-family:var(--font-mono);font-size:.5625rem;letter-spacing:var(--tracking-wide);color:var(--sand-400);text-align:right}.intro__main{max-width:820px;margin-top:auto;margin-bottom:clamp(18px,5vh,54px)}.intro__eyebrow{margin-bottom:var(--space-4);font-family:var(--font-mono);font-size:.625rem;letter-spacing:.2em;color:var(--gold-300)}.intro__title{max-width:900px;font-family:var(--font-display);font-size:var(--text-display);font-weight:400;line-height:1.04;letter-spacing:-.005em;color:var(--sand-50);text-wrap:balance;text-shadow:0 2px 40px oklch(8% .01 65 / .45)}.intro__lede{max-width:680px;margin:22px 0 30px;text-wrap:pretty;font-size:var(--text-base);line-height:1.9;color:var(--sand-200);text-shadow:0 1px 20px oklch(8% .01 65 / .6)}.intro__actions{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-3);pointer-events:auto}.intro__bottom{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--line)}.intro__hint,.intro__count,.intro__disclaimer{font-family:var(--font-mono);font-size:.5625rem;letter-spacing:.1em;line-height:1.6;color:var(--sand-400)}.intro__count{color:var(--sand-300)}.intro__count .mono{color:var(--gold-300);font-size:inherit}.intro__dot{padding:0 4px;color:var(--sand-500)}.intro__disclaimer{color:var(--sand-500);text-align:right}.intro.is-visible .intro__eyebrow,.intro.is-visible .intro__title,.intro.is-visible .intro__lede,.intro.is-visible .intro__actions{animation:rise .88s var(--ease-soft) both}.intro.is-visible .intro__title{animation-delay:70ms}.intro.is-visible .intro__lede{animation-delay:.14s}.intro.is-visible .intro__actions{animation-delay:.21s}.topbar{position:fixed;top:0;left:0;right:0;z-index:var(--z-topbar);display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);height:var(--topbar-h);padding:0 var(--hud-pad-x);background:linear-gradient(180deg,#0c0704e0,#0c070400)}.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0;border:0;background:none;color:var(--sand-100);text-align:left;cursor:pointer}.brand__mark{display:block;width:26px;height:26px;color:var(--gold-400);flex:none}.brand__mark svg{width:100%;height:100%}.brand__text{display:inline-flex;align-items:baseline;gap:6px;white-space:nowrap}.brand__text strong{font-family:var(--font-display);font-size:1.0625rem;font-weight:500;letter-spacing:.04em;color:var(--sand-50)}.brand__text span{font-size:.6875rem;color:var(--sand-300);letter-spacing:.08em}.brand__latin{margin-left:4px;font-family:var(--font-mono);font-size:.5rem;letter-spacing:.16em;color:var(--sand-500);white-space:nowrap}.topbar__progress{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:10px;white-space:nowrap}.topbar__progress .mono{font-size:.5625rem;color:var(--gold-300)}.topbar__rule{display:block;width:28px;height:1px;background:var(--line-strong)}#topbar-stop{font-size:.6875rem;letter-spacing:.06em;color:var(--sand-300)}.topbar__actions{display:flex;align-items:center;gap:var(--space-2)}.topbar__actions .text-btn{color:var(--sand-300);font-size:.6875rem;border-bottom-color:transparent}.topbar__actions .text-btn:hover{color:var(--sand-50);border-bottom-color:var(--gold-400)}.rail{position:fixed;top:50%;right:clamp(20px,4vw,52px);z-index:var(--z-rail);width:calc(var(--rail-w) + 12px);padding:12px 10px 12px 16px;border-radius:var(--radius-xs);background:linear-gradient(90deg,#0c070405,#0c070475 34%,#0c0704a3);transform:translateY(-50%);transition:opacity var(--dur-base) var(--ease-out)}.rail__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:var(--space-2);border-bottom:1px solid var(--line)}.rail__head .mono{font-size:.5rem;color:var(--sand-500);letter-spacing:.18em}.rail__body{position:relative;padding:10px 0 0 18px}.rail__line{position:absolute;left:5px;top:18px;bottom:18px;width:1px;background:var(--line)}.rail__progress{position:absolute;top:0;left:0;width:1px;height:0;background:var(--gold-400);transition:height .62s var(--ease-soft)}.rail__list{display:flex;flex-direction:column;gap:1px;margin:0;padding:0;list-style:none}.rail__item{position:relative;display:flex;align-items:baseline;gap:8px;width:100%;min-height:34px;padding:7px 0;border:0;background:none;color:var(--sand-200);text-align:left;cursor:pointer;transition:color var(--dur-fast) var(--ease-out)}.rail__item:before{content:"";position:absolute;left:-16px;top:50%;width:6px;height:6px;margin-top:-3px;border:1px solid var(--sand-500);border-radius:50%;background:var(--ink-950);transition:background-color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out)}.rail__no{width:17px;flex:none;font-family:var(--font-mono);font-size:.5rem;letter-spacing:.06em;color:var(--sand-400)}.rail__title{font-size:.71875rem;letter-spacing:.04em}.rail__item:hover{color:var(--sand-50)}.rail__item:hover:before{border-color:var(--gold-400)}.rail__item.is-current{color:var(--sand-50)}.rail__item.is-current:before{background:var(--gold-400);border-color:var(--gold-400);box-shadow:0 0 0 4px #deaf561f}.rail__item.is-current .rail__no{color:var(--gold-300)}.rail__item.is-current .rail__title{color:var(--sand-50)}.rail__item.is-current .rail__title{font-weight:500}.hotspots{position:fixed;inset:0;z-index:var(--z-hotspots);pointer-events:none}.hotspot{position:absolute;display:inline-flex;align-items:center;gap:8px;min-width:44px;min-height:44px;padding:6px;border:0;background:none;color:var(--sand-100);transform:translate(-50%,-50%);cursor:pointer;pointer-events:auto}.hotspot__dot{position:relative;display:block;width:14px;height:14px;flex:none;border:1px solid var(--gold-400);border-radius:50%;background:#0c0704b8;box-shadow:0 0 0 4px #deaf5614;transition:background-color var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out)}.hotspot__dot:after{content:"";position:absolute;inset:4px;border-radius:50%;background:var(--gold-400);transition:background-color var(--dur-fast) var(--ease-out)}.hotspot__dot:before{content:"";position:absolute;inset:-7px;border:1px solid oklch(78% .12 82 / .3);border-radius:50%;animation:hotspot-pulse 3.2s var(--ease-out) infinite}.hotspot__label{padding:6px 9px;border:1px solid var(--line);border-radius:var(--radius-xs);background:#0c0704e6;color:var(--sand-100);font-size:.71875rem;letter-spacing:.03em;white-space:nowrap;opacity:0;transform:translate(-4px);transition:opacity var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);pointer-events:none}.hotspot:hover .hotspot__dot,.hotspot:focus-visible .hotspot__dot{background:var(--gold-400);box-shadow:0 0 0 6px #deaf5624}.hotspot:hover .hotspot__dot:after,.hotspot:focus-visible .hotspot__dot:after{background:var(--ink-950)}.hotspot:hover .hotspot__label,.hotspot:focus-visible .hotspot__label{opacity:1;transform:none}.hotspot.is-offscreen{visibility:hidden;pointer-events:none}body.card-open .hotspots{display:none}body.card-open .rail,body.card-open .hud,body.card-open .map-wrap{opacity:0;pointer-events:none}.hud{position:fixed;left:0;right:0;bottom:0;z-index:var(--z-hud);display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:end;gap:var(--space-5);padding:20px var(--hud-pad-x) calc(18px + env(safe-area-inset-bottom));background:linear-gradient(0deg,#0c0704eb,#0c070400);transition:opacity var(--dur-base) var(--ease-out)}.hud__stop{display:flex;align-items:flex-start;gap:10px;min-width:0}.hud__no{padding-top:5px;font-size:.5625rem;color:var(--gold-300)}.hud__title{margin:0;font-family:var(--font-display);font-size:1.25rem;font-weight:400;line-height:1.1;color:var(--sand-50)}.hud__en{margin:4px 0 0;font-family:var(--font-mono);font-size:.5rem;letter-spacing:.16em;color:var(--sand-500)}.hud__actions{display:flex;align-items:center;justify-content:center;gap:var(--space-2)}.hud__hint{justify-self:end;max-width:210px;font-family:var(--font-mono);font-size:.5rem;letter-spacing:.1em;line-height:1.7;color:var(--sand-500);text-align:right}.hud__route{display:none}.map-wrap{position:fixed;left:var(--hud-pad-x);top:84px;z-index:var(--z-map);width:190px;padding:10px 10px 8px;border:1px solid var(--line);border-radius:var(--radius-xs);background:#130d08eb;box-shadow:var(--shadow-lift);transition:opacity var(--dur-base) var(--ease-out)}.map-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:0 0 8px;margin-bottom:8px;border:0;border-bottom:1px solid var(--line);background:none;color:var(--sand-400);font-family:var(--font-mono);font-size:.5rem;letter-spacing:.14em;cursor:pointer}.map-toggle:hover{color:var(--sand-100)}#map-mode{color:var(--sand-500);letter-spacing:.08em}.map svg{display:block;width:100%;height:auto}.map-wrap.is-collapsed .map{display:none}.map-wrap.is-collapsed .map-toggle{padding-bottom:0;margin-bottom:0;border-bottom:0}.scrim{position:fixed;inset:0;z-index:var(--z-scrim);background:var(--scrim);opacity:0;transition:opacity var(--dur-base) var(--ease-out);display:none}.scrim.is-open{opacity:1}.drawer{position:fixed;top:0;right:0;bottom:0;z-index:var(--z-drawer);display:flex;flex-direction:column;width:var(--drawer-w);border-left:1px solid var(--line);background:var(--ink-900);box-shadow:var(--shadow-panel);transform:translate(102%);transition:transform var(--dur-slow) var(--ease-out);overscroll-behavior:contain}.drawer.is-open{transform:none}.drawer__grab{display:none}.drawer__top{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:22px 24px 0}#drawer-kicker{color:var(--gold-300);font-size:.5625rem;letter-spacing:.16em}.drawer__scroll{flex:1;min-height:0;padding:22px 32px 36px;overflow-y:auto;overscroll-behavior:contain}.drawer__head{padding-bottom:var(--space-5)}.drawer__en{font-family:var(--font-mono);font-size:.5rem;letter-spacing:.16em;text-transform:uppercase;color:var(--sand-500)}.drawer__title{margin:8px 0 14px;font-family:var(--font-display);font-size:clamp(1.75rem,4.2vw,2.375rem);font-weight:400;line-height:1.15;color:var(--sand-50)}.drawer__summary{font-size:.9375rem;line-height:1.8;color:var(--sand-200)}.meta{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;margin:0 0 var(--space-6);padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.meta dt{margin:0;font-family:var(--font-mono);font-size:.5rem;letter-spacing:.14em;text-transform:uppercase;color:var(--sand-500)}.meta dd{margin:5px 0 0;font-size:.75rem;line-height:1.55;color:var(--sand-100)}.prose p{margin:0 0 16px;font-size:.90625rem;line-height:1.92;color:var(--sand-200)}.prose p:last-child{margin-bottom:0}.facts{margin-top:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--line)}.facts h3,.sources h3{margin:0 0 10px;font-family:var(--font-mono);font-size:.5rem;font-weight:400;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-300)}.facts ul{display:flex;flex-direction:column;gap:9px;margin:0;padding:0;list-style:none}.facts li{position:relative;padding-left:16px;font-size:.75rem;line-height:1.7;color:var(--sand-300)}.facts li:before{content:"";position:absolute;left:2px;top:.7em;width:4px;height:4px;background:var(--gold-500)}.sources{margin-top:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--line)}.sources a{display:block;width:fit-content;max-width:100%;padding:3px 0;font-size:.6875rem;line-height:1.6;color:var(--sand-400);text-decoration:underline;text-decoration-color:#ece4d338;text-underline-offset:3px;overflow-wrap:anywhere}.sources a:hover{color:var(--gold-300);text-decoration-color:currentColor}.drawer__foot{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:14px 32px calc(14px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--ink-900)}.drawer__foot .text-btn{color:var(--gold-300);font-size:.6875rem;border-bottom-color:transparent}.drawer__foot .text-btn:hover{border-bottom-color:var(--gold-400)}.drawer__note{font-family:var(--font-mono);font-size:.5rem;letter-spacing:.08em;color:var(--sand-500);white-space:nowrap}.catalog{position:fixed;inset:0;z-index:var(--z-catalog);display:flex;flex-direction:column;background:var(--ink-950);opacity:0;transform:translateY(10px);transition:opacity var(--dur-base) var(--ease-out),transform var(--dur-base) var(--ease-out)}.catalog.is-open{opacity:1;transform:none}.catalog__bar{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-4);padding:24px var(--hud-pad-x) 18px;border-bottom:1px solid var(--line);background:var(--ink-950)}.catalog__bar .mono{font-size:.5rem;color:var(--sand-500)}.catalog__title{margin-top:6px;font-family:var(--font-display);font-size:clamp(1.5rem,3vw,2rem);font-weight:400;color:var(--sand-50)}.catalog__scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain}.catalog__body{width:min(1120px,100%);margin:0 auto;padding:36px var(--hud-pad-x) 96px}.catalog__intro{max-width:64ch;margin-bottom:var(--space-10);font-size:.9375rem;line-height:1.9;color:var(--sand-300)}.catalog__intro p+p{margin-top:10px}.catalog__stop{display:grid;grid-template-columns:220px minmax(0,1fr);gap:var(--space-12);padding-top:var(--space-8);border-top:1px solid var(--line)}.catalog__stop+.catalog__stop{margin-top:var(--space-12)}.catalog__stop-head{position:sticky;top:24px;align-self:start}.catalog__stop-no{font-family:var(--font-mono);font-size:.5625rem;letter-spacing:.16em;color:var(--gold-300)}.catalog__stop-title{margin:8px 0 10px;font-family:var(--font-display);font-size:1.75rem;font-weight:400;line-height:1.1;color:var(--sand-50)}.catalog__stop-en{font-family:var(--font-mono);font-size:.5rem;letter-spacing:.14em;color:var(--sand-500)}.catalog__stop-intro{margin-top:14px;font-size:.75rem;line-height:1.8;color:var(--sand-400)}.catalog__artifacts{min-width:0}.catalog__artifact{padding:0 0 var(--space-8);border-bottom:1px solid var(--line)}.catalog__artifact+.catalog__artifact{margin-top:var(--space-8)}.catalog__artifact-en{font-family:var(--font-mono);font-size:.5rem;letter-spacing:.14em;text-transform:uppercase;color:var(--sand-500)}.catalog__artifact-title{margin:6px 0 10px;font-family:var(--font-display);font-size:1.5rem;font-weight:400;color:var(--sand-50)}.catalog__artifact-summary{max-width:66ch;font-size:.8125rem;line-height:1.8;color:var(--sand-300)}.catalog__artifact-body{max-width:68ch;margin-top:14px}.catalog__artifact-body p{margin:0 0 12px;font-size:.8125rem;line-height:1.9;color:var(--sand-400)}.catalog__artifact-meta{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:12px;font-family:var(--font-mono);font-size:.5625rem;line-height:1.7;color:var(--sand-500)}.catalog__artifact-meta span{overflow-wrap:anywhere}.catalog__sources{margin-top:var(--space-16);padding-top:var(--space-6);border-top:1px solid var(--line)}.catalog__sources h3{margin:0 0 14px;font-family:var(--font-display);font-size:1.5rem;font-weight:400;color:var(--sand-50)}.catalog__sources p{max-width:68ch;font-size:.75rem;line-height:1.8;color:var(--sand-400)}.catalog__sources ul{display:flex;flex-direction:column;gap:8px;margin:16px 0 0;padding:0;list-style:none}.catalog__sources li{font-size:.75rem;line-height:1.6}.catalog__sources a{text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:3px}.catalog__sources a:hover{color:var(--gold-300)}.route-sheet{position:fixed;inset:0;z-index:var(--z-route);display:flex;flex-direction:column;padding:20px var(--hud-pad-x) calc(20px + env(safe-area-inset-bottom));background:var(--ink-950);opacity:0;transform:translateY(12px);transition:opacity var(--dur-base) var(--ease-out),transform var(--dur-base) var(--ease-out)}.route-sheet.is-open{opacity:1;transform:none}.route-sheet__top{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-4);padding-bottom:var(--space-4);border-bottom:1px solid var(--line)}.route-sheet__top .mono{font-size:.5rem;color:var(--sand-500)}.route-sheet__title{margin-top:6px;font-family:var(--font-display);font-size:1.75rem;font-weight:400}.route-sheet__list{flex:1;min-height:0;margin:0;padding:0;overflow-y:auto;list-style:none}.route-sheet__item{display:grid;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:var(--space-3);width:100%;padding:16px 0;border:0;border-bottom:1px solid var(--line);background:none;color:var(--sand-200);text-align:left;cursor:pointer}.route-sheet__no{font-family:var(--font-mono);font-size:.5625rem;letter-spacing:.08em;color:var(--sand-500)}.route-sheet__name{display:flex;flex-direction:column;gap:3px;min-width:0}.route-sheet__name strong{font-family:var(--font-display);font-size:1.125rem;font-weight:400;color:var(--sand-100)}.route-sheet__name span{font-family:var(--font-mono);font-size:.5rem;letter-spacing:.12em;color:var(--sand-500)}.route-sheet__arrow{color:var(--sand-500);font-size:.875rem}.route-sheet__item.is-current .route-sheet__no,.route-sheet__item.is-current strong{color:var(--gold-300)}.route-sheet__item.is-current .route-sheet__arrow{color:var(--gold-400)}.toast{position:fixed;left:50%;bottom:96px;z-index:var(--z-toast);max-width:calc(100vw - 32px);padding:10px 14px;border:1px solid var(--line);border-radius:var(--radius-xs);background:var(--ink-800);color:var(--sand-100);font-size:.75rem;line-height:1.5;text-align:center;opacity:0;transform:translate(-50%,8px);transition:opacity var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out);pointer-events:none}.toast.is-visible{opacity:1;transform:translate(-50%)}.noscript{position:fixed;inset:0;z-index:100;padding:40px;overflow-y:auto;background:var(--ink-950);color:var(--sand-200)}.noscript h1{max-width:20ch;margin-bottom:20px;font-family:var(--font-display);font-size:2rem;font-weight:400}.noscript p{max-width:64ch;margin-bottom:14px;font-size:.875rem;line-height:1.8}.map-svg{display:block}.map-svg .map-ground{fill:#1b150d}.map-svg .map-pyramid{fill:#b5a2822e;stroke:#d6c9b180;stroke-width:.8}.map-svg .map-pyramid.is-main{fill:#deaf561f;stroke:#deaf5699}.map-svg .map-route{fill:none;stroke:#deaf5673;stroke-width:1;stroke-dasharray:3 3}.map-svg .map-route-done{fill:none;stroke:var(--gold-400);stroke-width:1.2}.map-svg .map-dot{fill:var(--gold-400);stroke:var(--ink-950);stroke-width:1.5}.map-svg .map-stop{fill:#d6c9b18c}.map-svg .map-stop.is-current{fill:var(--gold-300)}.map-svg .map-label{font-family:var(--font-mono);font-size:5px;letter-spacing:.08em;fill:#b8a990cc}.map-svg .map-section{fill:none;stroke:#ece4d333;stroke-width:.8}.map-svg .map-section-route{fill:none;stroke:var(--gold-400);stroke-width:1}.map-svg .map-section-room{fill:#deaf561f;stroke:#deaf5666;stroke-width:.8}@keyframes rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}@keyframes breathe{0%,to{opacity:.55}50%{opacity:1}}@keyframes hotspot-pulse{0%{transform:scale(.8);opacity:.8}70%{transform:scale(1.9);opacity:0}to{transform:scale(1.9);opacity:0}}@media(max-width:1100px){:root{--rail-w: 196px}.rail{right:24px}.hud__hint{display:none}.hud{grid-template-columns:minmax(0,1fr) auto}}@media(max-width:900px){.rail{display:none}.hud__route{display:inline-flex}.topbar__progress{display:none}.topbar{gap:var(--space-2)}.catalog__stop{grid-template-columns:180px minmax(0,1fr);gap:var(--space-8)}.scrim{display:block}}@media(max-width:720px){.topbar{height:var(--topbar-h);padding:0 16px}.brand__latin{display:none}.topbar__actions{gap:4px}.topbar__actions .text-btn{padding:8px 2px;font-size:.625rem}.icon-btn{width:36px;height:36px}.intro{padding:18px 18px max(18px,env(safe-area-inset-bottom))}.intro__top{gap:var(--space-3)}.intro__era,.intro__coords{display:none}.intro__main{margin-bottom:22px}.intro__eyebrow{margin-bottom:12px;font-size:.5625rem}.intro__lede{margin:16px 0 22px;font-size:.875rem;line-height:1.85;max-width:38ch}.intro__actions{gap:8px}.intro__actions .btn{min-height:46px;padding:0 16px;font-size:.75rem}.intro__bottom{padding-top:10px}.intro__hint,.intro__disclaimer{display:none}.intro__count{font-size:.5rem}.hud{grid-template-columns:minmax(0,1fr) auto;gap:8px;padding:10px 16px calc(10px + env(safe-area-inset-bottom))}.hud__title{font-size:1.0625rem}.hud__en{display:none}.hud__no{padding-top:3px}.hud__actions{gap:4px}.hud__actions .btn{min-height:36px;padding:0 10px;font-size:.6875rem}.hud__actions .icon--back{display:none}.map-wrap{left:12px;top:auto;bottom:84px;width:176px}.drawer{top:auto;bottom:0;left:0;width:100%;height:78dvh;border-left:0;border-top:1px solid var(--line);transform:translateY(102%)}.drawer__grab{display:block;width:36px;height:4px;margin:10px auto 0;border-radius:4px;background:var(--line-strong)}.drawer__top{padding:8px 20px 0}.drawer__scroll{padding:16px 20px 28px}.drawer__title{font-size:1.75rem}.drawer__summary{font-size:.875rem}.meta{gap:12px 14px}.drawer__foot{padding:12px 20px calc(12px + env(safe-area-inset-bottom))}.drawer__note{display:none}.catalog__bar{padding:16px 16px 12px}.catalog__body{padding:24px 16px 72px}.catalog__stop{grid-template-columns:1fr;gap:var(--space-4);padding-top:24px}.catalog__stop+.catalog__stop{margin-top:40px}.catalog__stop-head{position:static}.catalog__stop-title{font-size:1.5rem}.catalog__stop-intro{margin-top:8px}.catalog__artifact-title{font-size:1.25rem}.catalog__sources{margin-top:48px}.toast{bottom:84px}}@media(max-width:380px){.intro__actions{flex-direction:column;align-items:stretch}.intro__actions .btn{width:100%}.intro__title{font-size:clamp(2rem,9.2vw,2.6rem)}.brand__text span,#prev-btn span{display:none}.hud__actions .btn{padding:0 9px}}@media(hover:none){.hotspot{gap:6px}.hotspot__label{padding:4px 7px;font-size:.625rem;opacity:1;transform:none;background:#0c0704d6}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}