:root{--ink:#3e3529;--desk:#d6c8aa;--paper:#efe3ca;--cloth:#756348;--muted:#71614b;--accent:#665339;--line:#bdae91;--serif:'Songti SC','SimSun',serif;color:var(--ink);background:var(--desk);font:14px/1.6 'Segoe UI','Microsoft YaHei',sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit;color:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button{border:0;background:none}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #947848;outline-offset:4px}button:not(:disabled):hover{filter:brightness(.91)}[hidden]{display:none!important}h1,h2,p{margin:0}h1{font-size:clamp(25px,2.35vw,36px);font-weight:500;line-height:1.4;letter-spacing:.02em}h2{font-size:18px;font-weight:500}a{color:inherit;text-decoration:none}svg{display:block}
.topbar{height:88px;padding:0 44px;display:flex;align-items:center;justify-content:space-between;background:#ded1b8;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-size:25px;font-weight:600;letter-spacing:.15em}.brand svg{width:33px;height:33px;color:var(--cloth)}.brand small{display:block;font:8px/1.2 'Segoe UI',sans-serif;letter-spacing:.17em;margin-top:1px}.view-tabs{display:flex;gap:32px;align-self:stretch;align-items:stretch}.view-tabs button{position:relative;padding:0 8px;color:var(--muted)}.view-tabs button.active{color:var(--cloth);font-weight:600}.view-tabs button.active::after{content:'';position:absolute;height:3px;bottom:0;left:8px;right:8px;background:var(--cloth)}.primary,.secondary{padding:11px 20px;border-radius:5px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:6px}.primary{background:var(--cloth);color:#f5ead4}.primary span{font-size:19px;line-height:1}.secondary{border:1px solid var(--line);background:#ded1b8}.text-button{padding:8px 0;color:var(--cloth);min-height:40px}.text-button span{margin-left:14px}.inline-button{color:var(--cloth);padding:0;border-bottom:1px solid var(--cloth)}
.app-layout{display:grid;grid-template-columns:135px minmax(0,1fr);min-height:calc(100dvh - 88px)}.shelf{border-right:1px solid var(--line);display:flex;align-items:center;flex-direction:column;padding:30px 14px;position:relative;background:#ccbd9e}.rail-label{color:var(--muted);font-size:11px;letter-spacing:.15em;margin-bottom:28px}.mini-book{width:66px;height:94px;background:var(--cloth);color:#ecddbb;border-radius:1px 3px 3px 1px;box-shadow:4px 5px 7px #4a382526;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center}.mini-book::before{content:'';position:absolute;left:5px;top:0;bottom:0;border-left:1px solid #e8d3a926}.mini-book span{font:15px/1.3 var(--serif)}.mini-book small{font:6px/1 sans-serif;letter-spacing:.1em;margin-top:9px}.shelf-count{font-size:11px;margin-top:13px}.shelf-future{margin-top:39px;text-align:center;color:var(--muted);font-size:10px;line-height:1.9}.shelf-future>span{font-size:22px;display:grid;place-items:center;width:53px;height:69px;margin:0 auto 11px;border:1px dashed #ae9b7a;border-radius:2px}.shelf-bottom{margin-top:auto;padding-top:80px;font:11px/2.1 var(--serif);color:var(--muted);letter-spacing:.25em}main{min-width:0;padding:28px 5% 0}.reader-heading{display:flex;justify-content:space-between;align-items:center}.breadcrumb{font-size:11px;color:var(--muted);margin-bottom:10px;display:flex;align-items:center;gap:12px}.badge{display:inline-block;border:1px solid #bca988;border-radius:3px;font-size:10px;padding:1px 6px}.reader-heading p{margin-top:8px;color:var(--muted);font-size:12px}.heading-actions{display:flex;flex-direction:column;align-items:flex-end;gap:6px}.save-status{font-size:11px;color:var(--muted)}.save-status::before{content:'';display:inline-block;background:#6b714d;width:5px;height:5px;border-radius:50%;margin-right:7px}
.stage{position:relative;display:grid;place-items:center;padding:24px 0 16px;min-width:0;perspective:1800px}.book-rig{width:100%;height:clamp(300px,54dvh,560px);display:grid;place-items:center}.book{position:relative;isolation:isolate;filter:drop-shadow(8px 18px 15px #4a372a40)}.book.closed-landscape{transform:translateX(-25%)}.book.back-landscape{transform:translateX(25%)}.book-page{position:relative;overflow:hidden;background:var(--paper);color:var(--ink)}.book-page.--left::before,.book-page.--right::before{position:absolute;inset-block:0;z-index:3;width:clamp(14px,4%,28px);content:'';pointer-events:none}.book-page.--left::before{right:0;background:linear-gradient(to left,#49362138,#49362112 42%,transparent)}.book-page.--right::before{left:0;background:linear-gradient(to right,#49362138,#49362112 42%,transparent)}
.cover,.back-cover{background:var(--cloth);color:#efdfb8}.page-inner{height:100%;padding:10% 10% 8%;display:flex;flex-direction:column;position:relative}.cover .page-inner{padding:9% 11%}.cover-top{display:flex;align-items:center;justify-content:space-between;font-size:9px;letter-spacing:.12em}.cover h2{font:clamp(24px,3vw,42px)/1.4 var(--serif);margin:8% 0 5%;overflow-wrap:anywhere}.cover-image{width:100%;height:45%;object-fit:cover}.cover-bottom{display:flex;justify-content:space-between;margin-top:auto;font-size:9px;letter-spacing:.12em}.page-top{font-size:9px;letter-spacing:.16em;color:var(--muted);display:flex;justify-content:space-between}.title-page .page-inner{padding:11% 12%}.title-copy{margin:auto 0}.title-copy h2{font:clamp(23px,2.8vw,38px)/1.65 var(--serif);overflow-wrap:anywhere;white-space:pre-line}.title-copy p{margin-top:10%;font-size:11px;line-height:2.3;white-space:pre-line;overflow-wrap:anywhere;color:var(--muted)}.title-bottom{font-size:9px;color:var(--muted);display:flex;justify-content:space-between;letter-spacing:.08em}.title-rule{width:28px;height:1px;background:var(--cloth);margin-bottom:18px}.photo-page .page-inner{padding:8%}.page-photo{display:flex;align-items:center;justify-content:center;flex:1;min-height:0;margin-top:5%;margin-bottom:6%}.page-photo img{display:block;width:100%;height:100%;object-fit:contain}.photo-caption{display:flex;justify-content:space-between;gap:14px;font-size:10px;color:var(--muted);min-height:32px;align-items:flex-end}.photo-caption span:first-child{overflow-wrap:anywhere}.photo-caption .folio{white-space:nowrap}.closing-page .page-inner{align-items:center;justify-content:center;text-align:center}.closing-page h2{font:30px/1.8 var(--serif)}.closing-page p{font-size:10px;color:var(--muted);margin-top:22px;line-height:2}.back-cover .page-inner{align-items:center;justify-content:center}.back-cover h2{font:28px var(--serif);letter-spacing:.3em}.back-cover p{font-size:8px;margin-top:16px;letter-spacing:.12em}.empty-page{display:grid;place-items:center;text-align:center;padding:12%;height:100%;color:var(--muted)}.empty-page p{margin-top:20px;font-size:12px}
.reader-bottom{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;margin:9px 0 24px}.orientation,.gesture-hint{font-size:10px;color:var(--muted)}.gesture-hint{text-align:right}.controls{display:flex;align-items:center;gap:30px}.controls button{border:1px solid #b8a582;border-radius:50%;width:38px;height:38px;background:#e8dcc180;font-size:17px}.status{min-width:76px;text-align:center;font-size:11px;letter-spacing:.1em}.contact-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;display:flex;align-items:center;gap:22px}.strip-label{font-size:12px;white-space:nowrap}.strip-label small{display:block;font-size:10px;color:var(--muted);margin-top:4px}.thumbnails{display:flex;gap:12px;overflow-x:auto;padding:4px;min-width:0}.thumb{position:relative;flex:none;padding:0;width:66px;height:47px;border-radius:1px;outline:1px solid transparent;outline-offset:3px}.thumb.active{outline-color:var(--cloth)}.thumb img{width:100%;height:100%;object-fit:cover}.thumb span{position:absolute;right:3px;bottom:2px;font-size:8px;background:#433321c9;color:white;padding:0 4px}.strip-add{flex:none;width:46px;height:46px;border:1px dashed #ac9672;color:var(--muted);font-size:22px}.first-use-note{text-align:center;font-size:11px;color:var(--muted);padding:18px 0 2px}.site-footer{padding:24px 0 18px;display:flex;justify-content:space-between;font-size:10px;color:var(--muted)}
.manage-heading{padding:10px 0 36px}.manage-heading p{font-size:13px;color:var(--muted);margin-top:8px}.editor-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:60px;min-height:60vh}.book-settings form{display:flex;flex-direction:column;gap:9px}.book-settings label{margin-top:10px;font-size:12px}input,textarea{background:#e9dec6;border:1px solid #bca988;padding:11px 12px;border-radius:4px;width:100%;resize:vertical}input::placeholder,textarea::placeholder{color:var(--muted)}.book-settings form .primary{margin-top:10px}.backup-area{margin-top:36px;border-top:1px solid var(--line);padding-top:22px}.backup-area h2{font-size:14px}.backup-area p{font-size:12px;color:var(--muted);margin:12px 0 20px}.backup-area button{width:100%}.backup-area small{display:block;font-size:10px;color:var(--muted);margin-top:12px}.photo-editor-header{display:flex;align-items:center;justify-content:space-between}.editor-help{font-size:11px;color:var(--muted);margin:8px 0 20px}.photo-row{display:grid;grid-template-columns:24px 92px minmax(0,1fr);gap:16px;align-items:center;padding:18px 0;border-top:1px solid var(--line)}.row-number{font-size:11px;color:var(--muted)}.row-image{width:92px;height:84px;object-fit:contain;background:#ccbb9b}.photo-row label{font-size:10px;color:var(--muted)}.photo-row input{padding:6px 8px;font-size:12px;margin:5px 0}.photo-name{font-size:11px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.row-actions{display:flex;gap:10px;justify-content:flex-end}.row-actions button{font-size:11px;min-height:32px;padding:2px 8px}.row-actions button:last-child{color:#864a34}.editor-empty{padding:60px 20px;text-align:center;border:1px dashed var(--line);color:var(--muted)}.editor-empty button{margin-top:20px}.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);z-index:1000;background:#51422f;color:#f5ead4;padding:14px 20px;box-shadow:0 7px 25px #48382126;border-radius:6px;display:flex;align-items:center;gap:18px;font-size:13px;max-width:calc(100vw - 30px);width:max-content}.toast button{color:#f5ead4;white-space:nowrap;padding:3px}.toast #undo-button{text-decoration:underline}dialog{border:0;border-radius:9px;padding:30px;max-width:440px;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#382b2180}dialog p{margin-top:16px;color:var(--muted);font-size:13px}.dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:25px}body.busy{cursor:progress}
@media(min-width:1600px){main{padding-inline:8%}.stage{padding-top:36px}.book-rig{height:560px}}
@media(max-width:1000px){.app-layout{grid-template-columns:100px 1fr}main{padding-inline:4%}.topbar{padding-inline:28px}.editor-layout{gap:30px;grid-template-columns:230px 1fr}.gesture-hint{font-size:9px}.controls{gap:18px}}
@media(max-width:700px){.topbar{height:72px;padding:0 18px;flex-wrap:wrap;position:relative}.brand{font-size:21px;gap:8px}.brand svg{width:26px}.brand small{font-size:6px}.view-tabs{order:3;position:absolute;top:72px;left:20px;height:46px;gap:22px;z-index:1}.topbar>.primary{font-size:12px;padding:9px 13px;min-height:39px}.app-layout{display:block;padding-top:48px}.shelf{display:none}main{padding:20px 20px 0}.reader-heading{gap:10px}.reader-heading h1{font-size:25px}.reader-heading p{max-width:28ch;font-size:11px}.breadcrumb{font-size:9px;gap:8px}.heading-actions{gap:2px}.save-status{font-size:9px}.heading-actions button{font-size:11px}.stage{padding:22px 0 12px}.book-rig{height:min(53dvh,490px);min-height:280px}.reader-bottom{grid-template-columns:1fr auto 1fr;margin-bottom:20px;gap:10px}.gesture-hint{display:none}.orientation{font-size:9px}.controls{gap:15px}.status{font-size:10px;min-width:66px}.controls button{width:36px;height:36px}.contact-strip{gap:14px;padding:13px 0}.strip-label{font-size:10px}.strip-label small{font-size:9px}.thumb{width:53px;height:41px}.thumbnails{gap:10px}.strip-add{width:39px;height:41px}.first-use-note{font-size:10px;line-height:1.9;padding-top:14px}.site-footer{font-size:9px;gap:18px}.editor-layout{grid-template-columns:1fr;gap:40px}.book-settings{display:grid;grid-template-columns:1fr}.backup-area{margin-top:22px}.manage-heading{padding-top:5px;padding-bottom:22px}.photo-row{gap:10px;grid-template-columns:20px 68px minmax(0,1fr)}.row-image{width:68px;height:75px}.title-copy h2{font-size:27px}.title-copy p{font-size:11px}.page-top{font-size:8px}.photo-caption{font-size:9px}.cover h2{font-size:34px}.closing-page h2{font-size:24px}}
@media(max-height:600px) and (min-width:701px){.topbar{height:64px}.reader-heading h1{font-size:25px}main{padding-top:15px}.book-rig{height:300px;min-height:0}.stage{padding-block:14px}.app-layout{min-height:calc(100dvh - 64px)}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}