:root{--background:#F6F5ED;--paper:#FFFDF5;--surface:#FFFFFF;--banana:#F2D33C;--banana-soft:#FFF5BF;--banana-deep:#B99A13;--forest:#315C43;--forest-deep:#1F3E2D;--forest-soft:#E7EFE7;--ink:#20231F;--ink-deep:#111511;--ink-soft:#414840;--cobalt:#4169A8;--cobalt-soft:#E9EFF9;--tomato:#D45C48;--tomato-soft:#F9EAE5;--sand:#C3A66C;--sand-soft:#F4EEDC;--title:#242820;--body:#4A5149;--muted:#777E73;--border:#E2E3D9;--divider:#EBECE3}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--background);color:var(--ink);font:16px/1.72 system-ui,-apple-system,'Microsoft YaHei',sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a{touch-action:manipulation}p{margin:0 0 1em;color:var(--body)}h1,h2,h3{line-height:1.22;letter-spacing:-.035em;margin:0 0 .55em;color:var(--ink-deep)}h1{font-size:clamp(34px,4.5vw,64px)}h2{font-size:clamp(25px,3vw,36px)}h3{font-size:21px}.shell{max-width:1360px;margin:auto;padding-left:28px;padding-right:28px}.skip{position:absolute;top:-100px}.skip:focus{top:5px;background:#fff;z-index:1000}.eyebrow{color:var(--forest);font-size:12px;letter-spacing:.15em;font-weight:850;text-transform:uppercase}.site-header{position:relative;z-index:10;background:var(--paper);border-bottom:2px solid var(--ink)}.header-inner{height:76px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px;white-space:nowrap}.brand small{display:block;font-size:9px;letter-spacing:.25em;line-height:1;color:var(--forest)}.brand-mark{width:43px;height:43px;background:var(--banana);border:2px solid var(--ink);display:grid;place-items:center;border-radius:50% 50% 42% 42%;transform:rotate(-8deg)}.main-nav{display:flex;gap:24px;margin-left:auto}.main-nav a{font-weight:750;font-size:14px}.main-nav a:hover,.text-link:hover{text-decoration:underline}.search-short{font-size:13px;border:1px solid var(--ink);padding:7px 14px;border-radius:3px}.nav-toggle{display:none;background:var(--banana);border:1px solid var(--ink);padding:8px 12px}.mobile-nav{background:var(--paper);padding:12px 24px;border-top:1px solid var(--border)}.mobile-nav[hidden]{display:none}.mobile-nav a{display:block;padding:10px}.btn,.outline-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 23px;border:2px solid var(--ink);min-height:46px;border-radius:3px;font-weight:800;background:var(--banana);cursor:pointer}.outline-btn{background:transparent}.btn:hover,.outline-btn:hover{transform:translateY(-2px)}.btn.dark{background:var(--forest-deep);color:#fff;border-color:var(--forest-deep)}.text-link{font-weight:800;color:var(--forest)}.atlas-hero{background:var(--banana-soft);border-bottom:2px solid var(--ink)}.atlas-hero-inner{min-height:560px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:7%;padding-top:48px;padding-bottom:48px}.atlas-hero-copy h1{font-weight:950;line-height:1.16;margin:18px 0 24px}.atlas-hero-copy h1 em{font-style:normal;color:var(--forest)}.hero-text{max-width:590px;font-size:19px}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:28px 0}.hero-footnote{font-size:12px;color:var(--forest);letter-spacing:.08em}.atlas-art{position:relative;min-height:420px;border:3px solid var(--ink);box-shadow:14px 14px 0 var(--forest);background:var(--banana)}.hero-image,.feature-image{width:100%;height:100%;display:flex;align-items:center;justify-content:center;object-fit:cover;text-align:center}.hero-image.missing,.feature-image.missing{font-size:28px;font-weight:900;padding:30px;background:repeating-linear-gradient(125deg,var(--banana) 0 25px,var(--banana-soft) 25px 50px);color:var(--forest)}.corner-sticker{position:absolute;right:-22px;top:-23px;background:var(--tomato);color:#fff;border:2px solid var(--ink);padding:14px 18px;border-radius:50%;font-weight:900;transform:rotate(12deg)}.atlas-section{padding-top:75px;padding-bottom:78px}.section-head{margin-bottom:30px}.spread-head{display:flex;align-items:end;justify-content:space-between;gap:24px}.spread-head p{max-width:300px}.route-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.route-tile{min-width:0;position:relative;border:1.5px solid var(--ink);background:var(--surface);padding:16px;min-height:280px;display:flex;flex-direction:column;gap:7px;transition:transform .15s}.route-tile:hover{transform:translateY(-4px)}.route-no{font-weight:900;font-size:13px}.route-art{height:100px;overflow:hidden;background:var(--forest-soft);border-radius:3px}.route-image{width:100%;height:100%;object-fit:cover;display:grid;place-items:center;font-weight:bold}.route-image.missing{padding:10px;color:var(--forest)}.route-tile h3{margin:4px 0}.route-tile p{font-size:12px;margin:0}.route-arrow{position:absolute;right:16px;top:14px}.route-2,.route-6{background:var(--forest-soft)}.route-3,.route-7{background:var(--sand-soft)}.route-4,.route-8{background:var(--banana-soft)}.story-band{background:var(--forest-deep);color:#fff}.story-band-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:8%;align-items:center;padding-top:66px;padding-bottom:66px}.story-band h2,.story-band p{color:#fff}.story-band h2{font-size:clamp(29px,3.6vw,48px)}.story-band .eyebrow{color:var(--banana)}.story-image{height:330px;border:3px solid var(--banana);background:var(--forest);overflow:hidden}.mini-rail{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.mini-story{display:block;background:var(--paper);padding:28px;border-left:5px solid var(--forest);min-height:220px}.mini-story:nth-child(2n){border-color:var(--tomato)}.mini-story:nth-child(3n){border-color:var(--cobalt)}.mini-tag{font-size:12px;color:var(--forest);font-weight:800}.mini-story h3{margin:13px 0}.mini-story p{font-size:14px}.split-editor{display:grid;grid-template-columns:.85fr 1.15fr;gap:8%}.editor-intro p{font-size:17px}.editor-side{border-top:2px solid var(--ink)}.editor-line{display:flex;align-items:center;gap:24px;padding:28px 0;border-bottom:1px solid var(--border)}.editor-line>strong{font-size:32px;color:var(--sand)}.editor-line span:nth-child(2){flex:1}.editor-line b{display:block;font-size:20px}.editor-line small{display:block;color:var(--muted)}.topic-surface{background:var(--forest-soft)}.three-topics{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-topic{background:var(--paper);padding:34px;min-height:275px;box-shadow:6px 6px 0 var(--forest)}.feature-topic>span{font-size:12px;color:var(--forest)}.feature-topic h3{font-size:26px;margin:16px 0}.feature-topic p{font-size:14px}.feature-topic>b{font-size:13px;color:var(--forest)}.last-message{text-align:center}.last-message p{max-width:570px;margin:auto}.last-message .hero-actions{justify-content:center}.page{padding-top:50px;padding-bottom:80px}.atlas-page-title{padding:30px 0 42px;max-width:930px}.atlas-page-title h1{margin:15px 0}.atlas-page-title p{font-size:18px}.library-new-layout{display:grid;grid-template-columns:230px 1fr;gap:36px}.side-index{align-self:start;background:var(--forest-deep);padding:22px;color:#fff}.side-index h2{color:var(--banana);font-size:21px}.side-index a{display:flex;justify-content:space-between;gap:5px;color:#fff;padding:9px 0;border-bottom:1px solid #597461;font-size:14px}.side-index a[aria-current]{color:var(--banana)}.side-index a span{color:#adc1b2}.side-note{font-size:12px;color:#c9d8cc;margin-top:20px}.search-board{display:grid;grid-template-columns:2fr repeat(3,1fr) auto;gap:9px;align-items:end;background:var(--paper);border:1px solid var(--border);padding:16px}.search-board label{font-size:12px;font-weight:800}.search-board input,.search-board select{display:block;width:100%;min-height:42px;margin-top:4px;background:#fff;border:1px solid var(--border);padding:7px;border-radius:0;min-width:0}.search-board .btn{white-space:nowrap}.results-head{display:flex;justify-content:space-between;align-items:center;padding:30px 0 14px}.results-head h2{font-size:25px}.results-head h2 span{font-size:14px;color:var(--muted)}.index-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.index-card{background:#fff;border:1px solid var(--border);display:grid;grid-template-columns:95px minmax(0,1fr);gap:15px;padding:16px;position:relative}.card-num{position:absolute;top:9px;left:9px;background:var(--banana);font-size:11px;padding:2px 5px}.index-illustration{height:150px;background:var(--forest-soft)}.cover{width:100%;height:100%;object-fit:cover}.cover.missing{height:100%;display:flex;align-items:center;justify-content:center;text-align:center;padding:8px;font-weight:900;background:var(--banana-soft)}.index-card-copy h3{font-size:20px;margin:4px 0}.index-card-copy p{font-size:13px;line-height:1.55}.index-card-copy small{color:var(--forest);font-weight:800}.index-card-copy .text-link{font-size:13px}.pagination{display:flex;gap:8px;flex-wrap:wrap;margin-top:30px}.pagination a{padding:8px 13px;border:1px solid var(--forest)}.pagination a[aria-current]{background:var(--forest);color:#fff}.empty{padding:35px;background:var(--banana-soft)}.letters-stack{display:grid;gap:18px}.letter-piece{background:var(--paper);border-top:3px solid var(--forest);display:grid;grid-template-columns:160px 1fr;padding:33px;gap:30px}.letter-piece:nth-child(2n){background:var(--forest-soft)}.letter-count{font-size:68px;line-height:1;font-weight:950;color:var(--forest)}.letter-count small{font-size:16px;color:var(--muted)}.letter-body p{max-width:800px;font-size:17px}.letter-links{display:flex;flex-wrap:wrap;gap:9px}.letter-links a{background:#fff;border:1px solid var(--border);padding:7px 12px;font-size:13px}.letter-links span{margin-left:8px}.exhibition-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:19px}.exhibition-card{padding:36px;background:var(--paper);min-height:270px;border:2px solid var(--forest)}.exhibition-card:nth-child(3n+2){background:var(--banana-soft)}.exhibition-card:nth-child(3n){background:var(--forest-soft)}.exhibition-card small{font-weight:900;color:var(--forest);letter-spacing:.1em}.exhibition-card h2{margin:18px 0}.exhibition-card p{font-size:15px}.exhibition-card b{color:var(--forest)}.topic-detail{max-width:1000px}.topic-detail-art{max-width:100%;height:240px;background:var(--banana-soft);margin:28px 0}.topic-steps>a{display:grid;grid-template-columns:55px 1fr auto;align-items:center;gap:15px;border-bottom:1px solid var(--border);padding:22px 0}.topic-steps h3{margin:0}.topic-steps p{font-size:13px}.topic-steps strong{font-size:13px;color:var(--forest)}.guide-layout{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.guide-layout section{background:var(--paper);padding:30px;border-left:5px solid var(--forest)}.guide-layout section:nth-child(2n){border-color:var(--banana-deep)}.guide-number{font-size:34px;font-weight:900;color:var(--sand)}.guide-layout p{font-size:16px}.site-footer{background:var(--ink-deep);color:#fff}.footer-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:35px;padding-bottom:35px}.footer-wrap p{color:#c7cdc5;font-size:13px}.footer-wrap>div:last-child{display:flex;gap:22px;font-size:14px}.mobile-bottom{display:none}
/* detail page: deliberately structured as a dossier rather than book grid */
.crumb{margin-bottom:25px;font-size:13px;color:var(--muted)}.detail-hero{display:grid;grid-template-columns:260px 1fr;gap:45px;align-items:start;background:var(--paper);padding:34px;border-top:7px solid var(--banana)}.detail-cover{width:100%;height:380px;object-fit:cover}.detail-cover.missing{display:grid;place-items:center;background:var(--banana-soft);padding:20px;font-size:30px;font-weight:900;text-align:center}.detail-lede{font-size:18px;max-width:850px}.detail-meta{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.detail-meta span{font-size:13px;background:var(--forest-soft);padding:4px 10px}.detail-hero .btn{margin:0 9px 9px 0}.detail-hero .btn.secondary{background:#fff}.details-columns{display:grid;grid-template-columns:1fr 1fr;gap:55px;padding:60px 0}.detail-text h2,.chapter-list h2{font-size:24px;margin:20px 0 8px}.chapter-list>a{display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--border);padding:18px 0}.chapter-list>a>strong{flex:1}.hint{font-size:13px;color:var(--muted)}.block{padding:35px 0}.comic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.comic-card{background:var(--paper);padding:16px;border:1px solid var(--border)}.comic-card .cover{height:180px;display:grid;place-items:center}.card-copy p{font-size:13px}.comic-card h3{margin:7px 0}.reader-page{padding-top:25px}.reader-page .reader-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--forest-deep);color:#fff;padding:12px}.reader-toolbar button{padding:8px;background:var(--banana);border:0}.reader-title{font-size:30px;text-align:center;margin:25px 0}.reader-settings{background:var(--banana-soft);padding:20px}.reader-settings[hidden]{display:none}.reader-canvas{max-width:900px;margin:25px auto}.reader-page-item{margin-bottom:12px}.reader-page-item img{width:100%;height:auto;display:block}.reader-page-item.intro-panel{background:var(--paper);border-left:7px solid var(--forest);padding:25px}.reader-missing{min-height:230px;background:var(--forest-soft);padding:40px;text-align:center}.reader-missing small{display:block;overflow-wrap:anywhere}.reader-progress{text-align:center}.reader-chapters{display:flex;justify-content:space-around;align-items:center;gap:15px;margin:22px auto 40px}.reader-chapters details{position:relative}.reader-chapters details div{display:flex;flex-direction:column;background:#fff;padding:15px}.reader-chapters a{padding:9px;background:var(--banana-soft)}
@media(max-width:1100px){.main-nav,.search-short{display:none}.nav-toggle{display:block;margin-left:auto}.route-grid{grid-template-columns:repeat(2,1fr)}.search-board{grid-template-columns:repeat(2,1fr)}.search-board .wide-input{grid-column:1/-1}.mini-rail{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.shell{padding-left:16px;padding-right:16px}.header-inner{height:67px}.atlas-hero-inner,.story-band-inner,.split-editor,.library-new-layout,.details-columns,.detail-hero{grid-template-columns:1fr}.atlas-hero-inner{padding-top:40px}.atlas-hero-copy h1{font-size:38px}.atlas-art{min-height:240px;box-shadow:7px 7px 0 var(--forest)}.atlas-section{padding-top:48px;padding-bottom:50px}.story-band-inner{gap:20px}.story-image{height:230px}.spread-head{display:block}.route-grid{gap:9px}.route-tile{min-height:240px;padding:12px}.route-art{height:74px}.route-tile h3{font-size:18px}.route-tile p{font-size:11px}.mini-rail,.three-topics,.exhibition-grid,.guide-layout,.index-cards,.comic-grid{grid-template-columns:1fr}.library-new-layout{gap:15px}.side-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 13px}.side-index h2,.side-note{grid-column:1/-1}.search-board{grid-template-columns:1fr 1fr}.search-board button{grid-column:1/-1}.search-board label{min-width:0}.letter-piece{grid-template-columns:1fr;padding:20px;gap:10px}.letter-count{font-size:42px}.topic-steps>a{grid-template-columns:35px 1fr}.topic-steps strong{grid-column:2}.footer-wrap{display:block}.footer-wrap>div:last-child{flex-wrap:wrap}.mobile-bottom{display:flex;justify-content:space-around;position:sticky;bottom:0;background:var(--paper);border-top:1px solid var(--border);padding:7px}.mobile-bottom a{font-size:13px;min-height:44px;display:flex;align-items:center}.reader-page~.mobile-bottom{display:none}.detail-hero{padding:19px}.detail-cover{max-width:240px;height:300px}.reader-chapters{flex-wrap:wrap}}