:root{color-scheme:light;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0;font:14px/1.5 system-ui,-apple-system,sans-serif}
img{max-width:100%}
[hidden]{display:none!important}

/* Layout: one calm reading column (max 760px) with a thin bottom tab bar; the reader takes the full screen. */
:root{
  --paper:#F4EEE2; --paper-2:#EAE2D2; --card:#FBF8F1; --ink:#2A221C; --ink-2:#6C5F53; --ink-3:#9A8B7C; --line:#DED4C2;
  --brown:#4A2F1F; --on-brown:#F6EBD6; --accent:#56735C; --accent-soft:#DDE6D8; --gold:#C59A55; --danger:#A2473A;
  --shadow:0 1px 2px rgba(60,40,20,.06),0 8px 24px rgba(60,40,20,.08);
  --f-display:"Literata","Noto Serif SC",Georgia,serif;
  --f-ui:"Noto Sans","Noto Sans SC","PingFang SC",system-ui,-apple-system,sans-serif;
  --r-bg:#F5EFE2; --r-ink:#2A231D; --r-mute:#8C7F72; --r-bar:#EFE7D8; --r-line:#E0D6C4;
  --hl:rgba(222,176,74,.42); --hl-note:rgba(126,164,132,.38); --sel:rgba(86,115,92,.28);
  --tab-h:64px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#15110D; --paper-2:#201A15; --card:#1D1813; --ink:#ECE3D4; --ink-2:#B4A694; --ink-3:#85786A; --line:#3A3129;
  --brown:#D2B38A; --on-brown:#1B130D; --accent:#93B39A; --accent-soft:#25332A; --gold:#D8B373; --danger:#E08A7B;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#15110D; --paper-2:#201A15; --card:#1D1813; --ink:#ECE3D4; --ink-2:#B4A694; --ink-3:#85786A; --line:#3A3129;
  --brown:#D2B38A; --on-brown:#1B130D; --accent:#93B39A; --accent-soft:#25332A; --gold:#D8B373; --danger:#E08A7B;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.35); color-scheme:dark}

/* Reader paper colours are their own choice, independent of the app theme */
.reader[data-bg="ivory"]{--r-bg:#F5EFE2;--r-ink:#2A231D;--r-mute:#8C7F72;--r-bar:#EEE6D6;--r-line:#E0D6C4;--hl:rgba(222,176,74,.42);--hl-note:rgba(126,164,132,.4);--sel:rgba(86,115,92,.28);color-scheme:light}
.reader[data-bg="white"]{--r-bg:#FFFFFF;--r-ink:#1F1F1F;--r-mute:#8A8A8A;--r-bar:#F4F4F2;--r-line:#E6E6E3;--hl:rgba(240,196,70,.45);--hl-note:rgba(110,170,130,.38);--sel:rgba(70,110,90,.25);color-scheme:light}
.reader[data-bg="green"]{--r-bg:#DCE6D3;--r-ink:#22301F;--r-mute:#6D7D66;--r-bar:#D2DEC8;--r-line:#C3D1B8;--hl:rgba(226,186,84,.5);--hl-note:rgba(240,240,255,.55);--sel:rgba(40,80,50,.22);color-scheme:light}
.reader[data-bg="black"]{--r-bg:#111010;--r-ink:#D8D0C3;--r-mute:#7A7166;--r-bar:#1B1917;--r-line:#2C2926;--hl:rgba(196,150,60,.38);--hl-note:rgba(120,165,130,.34);--sel:rgba(147,179,154,.3);color-scheme:dark}

*{box-sizing:border-box}
html,body{height:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--f-ui);font-size:15px;line-height:1.5;-webkit-tap-highlight-color:transparent;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
input,textarea,select{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%}
textarea{resize:vertical;min-height:96px;line-height:1.5}
h1,h2,h3{font-family:var(--f-display);font-weight:600;text-wrap:balance;margin:0}
.num{font-variant-numeric:tabular-nums}
.muted{color:var(--ink-2)}
.tiny{font-size:12px;color:var(--ink-3)}
.label{font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);font-weight:600}
svg{flex:none}

/* ---------- shell ---------- */
.app{max-width:760px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:8px calc(var(--tab-h) + 24px + env(safe-area-inset-bottom,0px))}
.view[hidden]{display:none!important}
.topbar{display:flex;align-items:center;gap:10px;padding-block:14px 6px}
.topbar .grow{flex:1}
.brand{display:flex;align-items:center;gap:9px}
.brand .name{font-family:var(--f-display);font-size:17px;font-weight:600;letter-spacing:.01em}
.page-title{font-size:32px;line-height:1.15;margin:8px 0 2px}
.iconbtn{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:var(--ink-2)}
.iconbtn:hover{background:var(--paper-2)}
.iconbtn.solid{background:var(--brown);color:var(--on-brown)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 18px;white-space:nowrap;flex:none;border-radius:12px;font-weight:500;border:1px solid var(--line);background:var(--card)}
.btn.primary{background:var(--brown);color:var(--on-brown);border-color:transparent}
.btn.ghost{background:transparent}
.btn.danger{color:var(--danger)}
.btn.block{width:100%}
.btn:disabled{opacity:.5;cursor:default}
.row{display:flex;align-items:center;gap:10px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:30px 0 12px}
.section-head h2{font-size:20px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line);color:var(--ink-2);font-size:14px;display:inline-flex;align-items:center;gap:6px}
.chip.on{background:var(--card);color:var(--brown);border-color:var(--brown);font-weight:500}
.empty{border:1px dashed var(--line);border-radius:16px;padding:22px;text-align:center;color:var(--ink-2)}
.empty p{margin:4px 0 14px}

.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:30;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px);padding-left:max(8px,env(safe-area-inset-left,0px));padding-right:max(8px,env(safe-area-inset-right,0px))}
.tabbar nav{max-width:520px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);height:var(--tab-h)}
.tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--ink-3);font-size:11.5px}
.tab[aria-current="page"]{color:var(--brown);font-weight:600}

/* ---------- library ---------- */
.lib-tools{display:flex;align-items:center;gap:8px;margin:14px 0 18px}
.lib-tools .grow{flex:1}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg button{width:38px;height:34px;display:grid;place-items:center;color:var(--ink-3)}
.seg button[aria-pressed="true"]{background:var(--card);color:var(--brown)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:22px 16px}
.bookcard{display:flex;flex-direction:column;gap:8px;text-align:left;min-width:0}
.cover{position:relative;aspect-ratio:2/3;max-width:100%;border-radius:6px 10px 10px 6px;overflow:hidden;background:var(--paper-2);box-shadow:var(--shadow)}
.cover img{width:100%;height:100%;object-fit:cover;display:block}
.cover .gen{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:space-between;padding:14px 12px;color:#fff}
.cover .gen b{font-family:var(--f-display);font-weight:600;font-size:16px;line-height:1.25;text-wrap:balance}
.cover .gen i{font-style:normal;font-size:11.5px;opacity:.85}
.cover::after{content:"";position:absolute;inset:0 auto 0 0;width:6px;background:linear-gradient(90deg,rgba(0,0,0,.18),transparent)}
.bookcard .t{font-weight:500;font-size:14px;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.prog{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-3)}
.bar{flex:1;height:3px;border-radius:2px;background:var(--line);overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);border-radius:2px}
.done-badge{position:absolute;top:8px;right:8px;background:rgba(20,15,10,.62);color:#fff;font-size:11px;border-radius:999px;padding:2px 8px}
.list{display:flex;flex-direction:column}
.listrow{display:flex;gap:14px;align-items:center;padding:12px 2px;border-bottom:1px solid var(--line);text-align:left;width:100%}
.listrow .cover{width:44px;flex:none;border-radius:3px 5px 5px 3px;box-shadow:none}
.listrow .cover .gen{padding:4px}.listrow .cover .gen b{font-size:8px}.listrow .cover .gen i{display:none}
.listrow .meta{flex:1;min-width:0}
.listrow .meta .t{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.listrow .meta .a{font-size:13px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pct{font-size:13px;color:var(--ink-2);min-width:40px;text-align:right}
.collections{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.coll{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--card);text-align:left;min-width:0}
.coll .stack{display:flex;flex:none}
.coll .stack .cover{width:26px;margin-right:-10px;border-radius:2px 4px 4px 2px;box-shadow:0 0 0 2px var(--card)}
.coll .stack .cover .gen{display:none}
.coll .stack .ph{width:36px;height:54px;border-radius:4px;background:var(--paper-2)}
.coll .info{min-width:0;padding-left:10px}
.coll .info b{display:block;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumb{display:flex;align-items:center;gap:6px;color:var(--ink-2);margin-top:8px;font-size:14px}

/* ---------- sheets / modals ---------- */
.scrim{position:fixed;inset:0;z-index:60;background:rgba(20,14,8,.38);display:flex;align-items:flex-end;justify-content:center;animation:fade .18s ease}
.sheet{width:100%;max-width:620px;max-height:88%;overflow:auto;background:var(--card);color:var(--ink);border-radius:20px 20px 0 0;padding:10px max(18px,env(safe-area-inset-right,0px)) calc(22px + env(safe-area-inset-bottom,0px)) max(18px,env(safe-area-inset-left,0px));box-shadow:0 -10px 40px rgba(0,0,0,.18);animation:up .22s cubic-bezier(.2,.8,.2,1)}
.sheet.half{min-height:52%}
.sheet .grab{width:38px;height:4px;border-radius:2px;background:var(--line);margin:2px auto 12px}
.sheet h3{font-size:20px;margin-bottom:12px}
.sheet .actions{display:flex;gap:10px;margin-top:18px}
.sheet .actions .btn{flex:1 1 0;white-space:normal;min-width:0}
@media (min-width:700px){.scrim{align-items:center}.sheet{border-radius:20px;max-height:84%}}
@keyframes up{from{transform:translateY(24px);opacity:.4}}
@keyframes fade{from{opacity:0}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.field label{font-size:13px;color:var(--ink-2)}
.toast{position:fixed;left:50%;bottom:calc(var(--tab-h) + 22px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:90;background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:12px;font-size:14px;max-width:calc(100% - 32px);box-shadow:var(--shadow)}
.menu-list{display:flex;flex-direction:column}
.menu-list button{display:flex;align-items:center;gap:12px;padding:13px 4px;border-bottom:1px solid var(--line);text-align:left}
.menu-list button:last-child{border-bottom:0}
.menu-list .danger{color:var(--danger)}

/* ---------- launch ---------- */
.launch{position:fixed;inset:0;z-index:100;background:#F0EBE0;color:#2B231D;display:flex;flex-direction:column;align-items:center;justify-content:center;transition:opacity .35s ease;color-scheme:light}
.launch.out{opacity:0;pointer-events:none}
.launch .lg{border-radius:40px;box-shadow:0 18px 40px rgba(61,49,41,.18),0 3px 8px rgba(61,49,41,.08);line-height:0}
.launch .w{font-family:"Literata","Noto Serif SC",Georgia,serif;font-size:52px;line-height:1.2;margin-top:18px;letter-spacing:-.01em}
.launch .w:lang(zh-Hans){letter-spacing:.06em;font-weight:600}
.launch .tag{position:absolute;bottom:calc(64px + env(safe-area-inset-bottom,0px));font-size:13px;letter-spacing:.26em;color:#8E8478}
/* ---------- reader ---------- */
.reader{position:fixed;inset:0;z-index:50;background:var(--r-bg);color:var(--r-ink);display:flex;flex-direction:column}
.reader .rtop,.reader .rbot{flex:none;background:var(--r-bg);transition:transform .25s ease,opacity .25s ease;z-index:3}
.reader .rtop{display:flex;align-items:center;gap:6px;padding:calc(6px + env(safe-area-inset-top,0px)) max(8px,env(safe-area-inset-right,0px)) 6px max(8px,env(safe-area-inset-left,0px));border-bottom:1px solid var(--r-line)}
.reader .rtop .ttl{flex:1;text-align:center;font-family:var(--f-display);font-size:15px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 4px}
.reader .iconbtn{color:var(--r-mute)}
.reader .iconbtn:hover{background:var(--r-bar)}
.reader .rbot{border-top:1px solid var(--r-line);padding:0 max(12px,env(safe-area-inset-right,0px)) env(safe-area-inset-bottom,0px) max(12px,env(safe-area-inset-left,0px))}
.rtools{max-width:320px;margin:0 auto;display:grid;grid-auto-flow:column;grid-auto-columns:1fr;height:50px}
.rtools button{display:flex;align-items:center;justify-content:center;gap:7px;font-size:13.5px;color:var(--r-mute)}
.rtools button[aria-pressed="true"]{color:var(--r-ink);font-weight:600}
.rprog{display:flex;align-items:center;gap:10px;font-size:11.5px;color:var(--r-mute);max-width:520px;margin:0 auto;padding-top:6px}
.rprog .bar{background:var(--r-line)}
.reader.chrome-off .rtop{transform:translateY(-100%);opacity:0;pointer-events:none}
.reader.chrome-off .rbot{transform:translateY(100%);opacity:0;pointer-events:none}
.reader.chrome-off .rtop,.reader.chrome-off .rbot{position:absolute;left:0;right:0}
.reader.chrome-off .rtop{top:0}.reader.chrome-off .rbot{bottom:0}
.rscroll{flex:1;overflow-y:auto;overflow-x:hidden;position:relative;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.rpage{max-width:34em;margin:0 auto;padding:28px max(22px,env(safe-area-inset-left,0px)) 40vh;position:relative;font-family:var(--rf);font-size:var(--fs,19px);line-height:var(--lh,1.78);-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;touch-action:pan-y;hyphens:auto;overflow-wrap:break-word}
.rpage .chap-k{font-family:var(--f-ui);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--r-mute);margin:6px 0 10px}
.rpage p{margin:0 0 .9em;white-space:pre-line;text-align:start}
.rpage h2.bh{font-family:var(--rf);font-size:1.35em;line-height:1.35;margin:1.2em 0 .8em;font-weight:600}
.rpage .s{transition:color .22s ease}
.reader.focus .rpage .s{color:color-mix(in srgb,var(--r-ink) 30%,var(--r-bg))}
.reader.focus .rpage .s.cur{color:var(--r-ink)}
.rpage ruby{ruby-position:over}
.reader.pinyin .rpage{--lh:2.35}
.rpage rt{font-family:var(--f-ui);font-size:.46em;color:var(--r-mute);letter-spacing:0;font-weight:400}
.rpage::highlight(luma-hl){background-color:var(--hl)}
.rpage::highlight(luma-note){background-color:var(--hl-note)}
.rpage::highlight(luma-sel){background-color:var(--sel)}
.reader.pinyin .rpage{isolation:isolate}
.rpage .marks{position:absolute;inset:0;z-index:-1;pointer-events:none}
.rpage .marks i{position:absolute;border-radius:3px}
.rpage .marks.sel i{background:var(--sel)}.rpage .marks.hl i{background:var(--hl)}.rpage .marks.note i{background:var(--hl-note)}
.chap-nav{display:flex;gap:10px;justify-content:space-between;margin-top:36px;font-family:var(--f-ui)}
.chap-nav button{flex:1;border:1px solid var(--r-line);border-radius:12px;padding:12px;font-size:14px;color:var(--r-mute)}
.chap-nav button.next{color:var(--r-ink);border-color:var(--r-mute)}
.handle{position:absolute;width:2px;margin-left:-1px;background:var(--accent);border-radius:1px;z-index:4;touch-action:none;cursor:ew-resize}
.handle::before{content:"";position:absolute;left:-18px;right:-18px;top:-24px;bottom:-24px}
.handle::after{content:"";position:absolute;left:50%;width:12px;height:12px;margin-left:-6px;border-radius:50%;background:var(--accent);box-shadow:0 1px 3px rgba(0,0,0,.25)}
.handle.s::after{top:-11px}.handle.e::after{bottom:-11px}
.pdfpg{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.pdfpg .textLayer span{-webkit-user-select:none;user-select:none;cursor:default}
.psel{position:absolute;inset:0;z-index:3;pointer-events:none}
.psel i{position:absolute;background:rgba(86,115,92,.30);mix-blend-mode:multiply;border-radius:2px}
.reader[data-bg="black"] .psel i{mix-blend-mode:normal;background:rgba(147,179,154,.38)}
.selmenu{position:absolute;z-index:5;display:flex;background:#2A221C;color:#F4EBDD;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.25);overflow:hidden;font-family:var(--f-ui);font-size:14px;transform:translateX(-50%)}
.selmenu button{padding:10px 14px;white-space:nowrap}
.selmenu button+button{border-left:1px solid rgba(255,255,255,.14)}
.focus-hint{position:absolute;left:50%;transform:translateX(-50%);bottom:calc(64px + env(safe-area-inset-bottom,0px));background:var(--r-bar);color:var(--r-mute);font-family:var(--f-ui);font-size:12.5px;padding:6px 12px;border-radius:999px;z-index:4;pointer-events:none;transition:opacity .4s}
.reader .sheet{background:var(--card)}
.swatches{display:flex;gap:12px;flex-wrap:wrap}
.sw{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:12.5px;color:var(--ink-2)}
.sw i{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);display:block}
.sw[aria-pressed="true"] i{box-shadow:0 0 0 2px var(--card),0 0 0 4px var(--accent)}
.fontchips .chip{font-size:15px}
.rangerow{display:flex;align-items:center;gap:12px}
.fsbtn{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;font-family:var(--f-display);color:var(--ink);flex:none;line-height:1}
.fsbtn:active{background:var(--paper-2)}
.fsbtn:disabled{opacity:.35;cursor:default}
.rangerow input{flex:1;padding:0;border:0;background:none;accent-color:var(--accent)}
.toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0}
.switch{width:46px;height:28px;border-radius:999px;background:var(--line);position:relative;flex:none;transition:background .2s}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:transform .2s}
.switch[aria-checked="true"]{background:var(--accent)}
.switch[aria-checked="true"]::after{transform:translateX(18px)}
.tabs-s{display:flex;gap:4px;background:var(--paper-2);border-radius:12px;padding:4px;margin-bottom:14px}
.tabs-s button{flex:1;height:34px;border-radius:9px;font-size:14px;color:var(--ink-2)}
.tabs-s button[aria-selected="true"]{background:var(--card);color:var(--ink);font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.toc a,.toc button{display:block;width:100%;text-align:left;padding:11px 2px;border-bottom:1px solid var(--line)}
.toc .cur{color:var(--accent);font-weight:600}
.note-item{padding:12px 0;border-bottom:1px solid var(--line);text-align:left;width:100%;display:block}
.note-item q{display:block;quotes:none;font-family:var(--f-display);border-left:3px solid var(--gold);padding-left:10px;line-height:1.55}
.note-item .n{margin-top:6px;color:var(--ink-2);font-size:14px}
.note-item .tiny{margin-top:4px}

/* pdf */
.reader.pdf .rscroll{overflow:auto;background:var(--r-bar)}
.pdfpages{display:flex;flex-direction:column;align-items:center;gap:14px;padding:16px 8px 40vh;min-width:min-content}
.pdfpg{position:relative;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.12),0 6px 18px rgba(0,0,0,.08);flex:none}
.pdfpg canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.reader[data-bg="black"] .pdfpg canvas{filter:invert(.88) hue-rotate(180deg)}
.reader[data-bg="black"] .pdfpg{background:#1d1b19}
.pdfpg .pno{position:absolute;bottom:-20px;left:0;right:0;text-align:center;font-size:11px;color:var(--r-mute);font-family:var(--f-ui)}
.textLayer{position:absolute;inset:0;overflow:hidden;line-height:1;opacity:1;z-index:2;text-size-adjust:none;-webkit-text-size-adjust:none;transform-origin:0 0}
.textLayer span,.textLayer br{color:transparent;position:absolute;white-space:pre;cursor:text;transform-origin:0 0}
.textLayer span.markedContent{top:0;height:0}
.textLayer ::selection{background:rgba(86,115,92,.32)}
.textLayer br::selection{background:transparent}
.textLayer .endOfContent{display:block;position:absolute;inset:100% 0 0;z-index:-1;cursor:default;user-select:none}
.textLayer .endOfContent.active{top:0}
.pdfmenu{position:fixed;z-index:55;display:flex;background:#2A221C;color:#F4EBDD;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.25);overflow:hidden;font-family:var(--f-ui);font-size:14px;transform:translateX(-50%)}
.pdfmenu button{padding:10px 16px;white-space:nowrap}
.pdfmenu button+button{border-left:1px solid rgba(255,255,255,.14)}

/* pdf page-turn */
.reader.pdf.pspread .rscroll{overflow:hidden;touch-action:none}
.reader.pdf.pspread .pdfpages{flex-direction:row;justify-content:center;align-items:center;gap:0;padding:20px 24px;height:100%;min-width:0}
.reader.pdf.pspread .pdfpg{display:none}
.reader.pdf.pspread .pdfpg.vis{display:block}
.reader.pdf.pspread .pno{display:none}
.reader.pdf.pspread.two .pdfpg.vis+.pdfpg.vis::before{content:"";position:absolute;inset:0 auto 0 0;width:28px;z-index:1;pointer-events:none;background:linear-gradient(90deg,rgba(0,0,0,.16),transparent)}
.reader.pdf.pspread.two .pdfpg.vis:has(+.pdfpg.vis)::after{content:"";position:absolute;inset:0 0 0 auto;width:20px;z-index:1;pointer-events:none;background:linear-gradient(270deg,rgba(0,0,0,.1),transparent)}
.pdfpg canvas{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.ocrLayer span{white-space:pre}

/* lookup */
.srcchip{font-size:11px;background:var(--accent-soft);color:var(--accent);padding:3px 9px;border-radius:999px;white-space:nowrap}
.dict-chars{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;font-size:14px;line-height:1.5}
.dict-chars .zh{font-family:var(--f-display);font-size:18px;line-height:1.3}
.dict-ex{font-size:13.5px;margin:2px 0 6px -2px;padding-left:10px;border-left:2px solid var(--line)}
.dict-offer{display:flex;align-items:center;gap:12px;margin-top:14px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--paper-2)}
.dict-offer>div{flex:1;min-width:0}
.dictrow{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.dictrow:last-child{border-bottom:0}
.dictrow .dm{flex:1;min-width:0}
.dictrow .ok{color:var(--accent);font-size:13px;display:flex;align-items:center;gap:4px}
.lk-word{font-family:var(--f-display);font-size:34px;line-height:1.2;font-weight:600;word-break:break-word}
.lk-read{font-size:17px;color:var(--accent);margin-top:2px}
.lk-hv{font-size:13px;color:var(--ink-3);margin-top:2px}
.lk-mean{margin:14px 0 0;padding-left:20px;line-height:1.55}
.lk-mean li{margin-bottom:4px}
.lk-ex{margin-top:14px;padding:12px;border-radius:12px;background:var(--paper-2);font-size:14px;line-height:1.55}
.lk-ex .zh{font-family:var(--f-display);font-size:16px}
.thinking{display:flex;align-items:center;gap:10px;color:var(--ink-2);padding:18px 0}
.dot3{display:inline-flex;gap:4px}.dot3 i{width:6px;height:6px;border-radius:50%;background:var(--ink-3);animation:blink 1.2s infinite}
.dot3 i:nth-child(2){animation-delay:.2s}.dot3 i:nth-child(3){animation-delay:.4s}
@keyframes blink{50%{opacity:.25}}
.decklist{display:flex;flex-direction:column;gap:8px;margin:10px 0}
.decklist button{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;text-align:left}
.decklist button[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft)}

/* ---------- flashcards ---------- */
.subline{color:var(--ink-2);margin-bottom:16px}
.review-cta{width:100%;height:54px;font-size:16px;border-radius:14px}
.fc-filter{margin:16px 0}
.flash{position:relative;min-height:230px;border-radius:20px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:26px 22px;cursor:pointer;gap:6px}
.flash .side{position:absolute;top:12px;left:14px}
.flash .flipdir{position:absolute;top:6px;right:6px}
.flash .w{font-family:var(--f-display);font-size:40px;line-height:1.2;font-weight:600;word-break:break-word}
.flash .w.long{font-size:24px}
.flash .r{color:var(--accent);font-size:17px}
.flash .m{font-size:17px;line-height:1.5;max-width:30em}
.flash .src{font-size:13px;color:var(--ink-3);font-family:var(--f-display);margin-top:10px;line-height:1.5}
.flash .hint{position:absolute;bottom:12px;font-size:12px;color:var(--ink-3)}
.grade{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.grade button{height:52px;border-radius:14px;border:1px solid var(--line);background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.15;font-weight:600}
.grade button small{font-weight:400;font-size:11.5px;color:var(--ink-3)}
.grade .hard{color:var(--danger)}.grade .ok{color:var(--ink)}.grade .easy{color:var(--accent)}
.decks{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.deck{display:flex;flex-direction:column;gap:10px;padding:14px;border-radius:16px;border:1px solid var(--line);background:var(--card);text-align:left;min-width:0}
.deck .ic{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff}
.deck b{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.deck.add{border-style:dashed;align-items:center;justify-content:center;color:var(--ink-2);background:transparent;min-height:118px}
.summary{text-align:center;padding:22px 10px}
.summary .big{font-family:var(--f-display);font-size:28px;margin-bottom:6px}
.sumgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}
.sumgrid div{border:1px solid var(--line);border-radius:14px;padding:12px 6px;background:var(--card)}
.sumgrid b{display:block;font-size:24px;font-family:var(--f-display)}
.wordrow{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line)}
.wordrow .wm{flex:1;min-width:0}
.wordrow .ww{font-weight:600;font-size:17px;font-family:var(--f-display)}
.wordrow .wr{color:var(--accent);font-size:13px;margin-left:6px}
.wordrow .wmean{color:var(--ink-2);font-size:14px}
.colorpick{display:flex;gap:10px;flex-wrap:wrap}
.colorpick button{width:32px;height:32px;border-radius:50%}
.colorpick button[aria-pressed="true"]{box-shadow:0 0 0 2px var(--card),0 0 0 4px var(--ink)}
.iconpick{display:flex;gap:8px;flex-wrap:wrap}
.iconpick button{width:40px;height:40px;border-radius:11px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-2)}
.iconpick button[aria-pressed="true"]{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}

/* ---------- stats ---------- */
.period{display:flex;align-items:center;gap:4px}
.period b{min-width:7.5em;text-align:center;font-weight:600;font-size:14.5px}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.tile{border:1px solid var(--line);border-radius:16px;padding:14px 14px 12px;background:var(--card);min-width:0}
.tile .v{font-family:var(--f-display);font-size:28px;line-height:1.1;font-weight:600;margin-top:6px;white-space:nowrap}
.tile .v small{font-size:14px;font-weight:400;color:var(--ink-2);margin-left:2px}
.streak{display:flex;align-items:center;gap:8px;margin-top:12px;color:var(--ink-2);font-size:14px}
.cal{border:1px solid var(--line);border-radius:16px;background:var(--card);padding:10px 8px 8px}
.cal .dow{display:grid;grid-template-columns:repeat(7,1fr);font-size:11.5px;color:var(--ink-3);text-align:center;padding-bottom:6px}
.wk{display:grid;grid-template-columns:repeat(7,1fr);grid-template-rows:22px 18px 18px 12px;row-gap:3px;border-top:1px solid var(--line);padding:4px 0}
.wk .d{grid-row:1;font-size:12.5px;text-align:center;color:var(--ink-2)}
.wk .d.out{color:transparent}
.wk .d.today{color:var(--brown);font-weight:700}
.wk .d.today span{border-bottom:2px solid var(--brown)}
.seg-bar{height:16px;font-size:10.5px;line-height:16px;color:#fff;padding:0 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0 1px;border-radius:0}
.seg-bar.st{border-top-left-radius:8px;border-bottom-left-radius:8px;margin-left:4px}
.seg-bar.en{border-top-right-radius:8px;border-bottom-right-radius:8px;margin-right:4px}
.more{grid-row:4;font-size:10px;color:var(--ink-3);text-align:center;line-height:12px}
.top{display:flex;flex-direction:column;gap:2px}
.toprow{display:grid;grid-template-columns:22px 1fr auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.toprow .rk{color:var(--ink-3);font-size:13px;text-align:right}
.toprow .tt{display:flex;align-items:center;gap:8px;min-width:0}
.toprow .tt span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toprow .dotc{width:10px;height:10px;border-radius:3px;flex:none}
.toprow .tb{grid-column:2/4;height:4px;border-radius:2px;background:var(--line);overflow:hidden}
.toprow .tb i{display:block;height:100%;border-radius:2px}

/* ---------- settings ---------- */
.group{border:1px solid var(--line);border-radius:16px;background:var(--card);padding:4px 16px;margin-bottom:16px}
.group .item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.group .item:last-child{border-bottom:0}
.group .item select{width:auto;min-width:9em}
.account{display:flex;align-items:center;gap:12px}
.account img{width:42px;height:42px;border-radius:50%;object-fit:cover;background:var(--paper-2)}
.syncdot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;margin-right:6px}
.syncdot.off{background:var(--ink-3)}

/* detail */
.detail-head{display:flex;gap:16px;align-items:flex-start}
.detail-head .cover{width:96px;flex:none}
.detail-head .dm{min-width:0;flex:1}
.detail-head h3{margin-bottom:4px}
.desc{color:var(--ink-2);font-size:14px;line-height:1.6;margin-top:12px;white-space:pre-line}
.kv{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:14px}
.kv div{background:var(--paper-2);border-radius:12px;padding:10px 12px}
.kv b{display:block;font-size:20px;font-family:var(--f-display)}
.celebrate{text-align:center;padding:26px 8px 8px}
.celebrate .moon{margin:0 auto 12px}
.celebrate h3{font-size:26px}
@media (max-width:420px){.page-title{font-size:28px}.tile .v{font-size:23px}.tile{padding:12px 10px}.grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- line guide ---------- */
.reader.focus.lguide-on .rpage .s{color:var(--r-ink)}
.lguide{position:absolute;z-index:2;pointer-events:none;border-radius:12px;border:1.5px solid color-mix(in srgb,var(--r-mute) 70%,transparent);box-shadow:0 0 0 200vmax color-mix(in srgb,var(--r-bg) 76%,transparent);transition:top .22s ease,height .22s ease,left .22s ease,width .22s ease}
@media (prefers-reduced-motion:reduce){.lguide{transition:none}}
/* ---------- page-turn reading ---------- */
.pageno{display:none}
.reader.spread .rscroll{overflow:hidden;padding:44px 28px 52px;touch-action:none;-webkit-user-select:none;user-select:none}
.reader.spread .rpage{max-width:none;margin:0;padding:0;height:100%;column-count:1;column-gap:56px;column-fill:auto;transition:transform .42s cubic-bezier(.22,.7,.2,1);will-change:transform;touch-action:none}
.reader.spread .rpage p,.reader.spread .rpage .bh{break-inside:auto}
.reader.spread .chap-nav{break-inside:avoid}
.reader.spread .pageno{display:flex;position:absolute;left:28px;right:28px;bottom:16px;justify-content:center;font-family:var(--f-ui);font-size:12px;color:var(--r-mute);font-variant-numeric:tabular-nums;pointer-events:none}
.reader.spread .pageno span:empty{display:none}
@media (min-width:900px){
  .reader.spread .rscroll{padding:56px max(6vw,56px) 64px}
  .reader.spread .rpage{column-count:2;column-gap:min(12vw,144px)}
  .reader.spread.two .rscroll::before{content:"";position:absolute;top:32px;bottom:32px;left:50%;width:1px;background:linear-gradient(transparent,var(--r-line) 12%,var(--r-line) 88%,transparent);box-shadow:0 0 28px 8px rgba(0,0,0,.035)}
  .reader.spread .pageno{left:max(6vw,56px);right:max(6vw,56px);justify-content:space-between;bottom:22px}
}

/* ---------- wide screens: side navigation, full-width content ---------- */
.side-brand{display:none}
@media (min-width:1024px){
  .tabbar{top:0;bottom:0;left:0;right:auto;width:232px;border-top:0;border-right:1px solid var(--line);background:var(--paper-2);backdrop-filter:none;-webkit-backdrop-filter:none;padding:calc(28px + env(safe-area-inset-top,0px)) 16px 24px max(16px,env(safe-area-inset-left,0px))}
  .tabbar nav{display:flex;flex-direction:column;gap:4px;height:auto;max-width:none}
  .side-brand{display:flex;align-items:center;gap:12px;padding:0 10px 28px;font-family:var(--f-display);font-size:21px;font-weight:600}
  .tab{flex-direction:row;justify-content:flex-start;gap:14px;padding:11px 14px;border-radius:12px;font-size:15px;color:var(--ink-2)}
  .tab:hover{background:color-mix(in srgb,var(--card) 60%,transparent)}
  .tab[aria-current="page"]{background:var(--card);color:var(--brown);box-shadow:0 1px 2px rgba(60,40,20,.06)}
  .app{max-width:none;margin:0 0 0 232px;padding-left:max(56px,env(safe-area-inset-left,0px));padding-right:max(56px,env(safe-area-inset-right,0px));padding-block:20px 64px}
  .view .topbar .brand{visibility:hidden}
  .page-title{font-size:42px;margin-top:0}
  .grid{grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:34px 30px}
  .collections{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
  .fc-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:56px;align-items:start}
  .fc-side .section-head{margin-top:6px}
  .flash{min-height:340px}
  .flash .w{font-size:60px}
  .tiles{grid-template-columns:repeat(3,minmax(0,240px))}
  .st-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:56px;align-items:start}
  .wk{grid-template-rows:26px 20px 20px 14px}
  .seg-bar{height:18px;line-height:18px;font-size:11.5px}
  .set-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:start}
  .toast{bottom:28px;left:calc(50% + 116px)}
}
@media (min-width:1600px){ .app{padding-left:96px;padding-right:96px} }