:root{--bg:#f7f3ea;--paper:#fffdf8;--ink:#1d1b18;--muted:#746f68;--line:#ded8cd;--accent:#167c64;--accent2:#df9f2d;--shadow:0 18px 50px rgba(45,39,31,.12);--reader:20px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.app-shell{min-height:100vh}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 max(22px,calc((100vw - 1240px)/2));border-bottom:1px solid var(--line);background:rgba(247,243,234,.92);backdrop-filter:blur(14px);position:sticky;top:0;z-index:30}.brand{display:flex;gap:10px;align-items:center;color:inherit;text-decoration:none;font-weight:800}.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--accent);color:white;display:grid;place-items:center;font-family:Georgia,serif;font-size:22px}.top-actions{display:flex;gap:10px}.primary-btn,.icon-btn,.back-btn{border:0;cursor:pointer;font:inherit}.primary-btn{background:var(--accent);color:#fff;padding:12px 18px;border-radius:12px;font-weight:750}.icon-btn{background:#fff;border:1px solid var(--line);border-radius:10px;min-width:42px;height:42px}.view{display:none}.view.active{display:block}.hero{max-width:1240px;margin:38px auto 56px;padding:48px;border-radius:30px;background:linear-gradient(135deg,#e3efe9 0%,#f3e9d4 100%);display:grid;grid-template-columns:1.5fr .7fr;gap:50px;align-items:center}.eyebrow{letter-spacing:.14em;font-size:12px;font-weight:800;color:var(--accent);margin-bottom:10px}.hero h1{font-family:Georgia,'Times New Roman',serif;font-size:clamp(38px,5vw,65px);line-height:1.02;margin:0 0 18px;max-width:800px}.hero p{font-size:18px;line-height:1.6;color:#504b45;max-width:770px}.hero-card{background:#fff;padding:28px;border-radius:22px;box-shadow:var(--shadow);display:grid;gap:8px}.hero-word{font-family:Georgia,serif;font-size:35px}.hero-phonetic{color:#999}.hero-actions{display:flex;gap:14px;color:var(--accent);font-weight:700;margin-top:12px}.section-head{max-width:1240px;margin:0 auto 22px;display:flex;align-items:flex-end;justify-content:space-between;gap:18px}.section-head h2{font:700 34px Georgia,serif;margin:0}.section-head p{margin:8px 0 0;color:var(--muted)}.search{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:13px;padding:0 14px;min-width:300px}.search input{border:0;outline:0;background:transparent;height:46px;width:100%;font-size:15px}.books-grid{max-width:1240px;margin:0 auto 70px;display:grid;grid-template-columns:repeat(5,1fr);gap:22px}.book-card{min-width:0}.cover{aspect-ratio:.72;width:100%;border:0;border-radius:15px;padding:22px;display:flex;flex-direction:column;text-align:left;justify-content:space-between;cursor:pointer;box-shadow:0 10px 28px rgba(32,28,24,.15);transition:.2s transform,.2s box-shadow;color:#fff;overflow:hidden;position:relative}.cover:after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(255,255,255,.12),transparent 40%,rgba(0,0,0,.12));pointer-events:none}.cover:hover{transform:translateY(-5px);box-shadow:0 18px 38px rgba(32,28,24,.2)}.cover strong{font:700 27px/1.07 Georgia,serif;position:relative;z-index:1}.cover-small,.cover-read{font-size:12px;letter-spacing:.07em;text-transform:uppercase;position:relative;z-index:1}.cover-read{font-weight:800}.theme-wonder{background:#36546f}.theme-detective{background:#6c4133}.theme-gothic{background:#323b40}.theme-horror{background:#631f27}.theme-classic{background:#7e6c3e}.book-info{display:flex;justify-content:space-between;gap:8px;margin-top:12px}.book-info h3{font-size:15px;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:175px}.book-info p{font-size:13px;color:var(--muted);margin:4px 0}.level{font-size:11px;background:#ebe6dc;padding:5px 7px;height:max-content;border-radius:7px;white-space:nowrap}.reader-toolbar{height:70px;padding:0 25px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:72px;z-index:20}.back-btn{background:transparent;color:var(--accent);font-weight:750;justify-self:start}.reader-title{text-align:center;display:flex;flex-direction:column}.reader-title span{font-size:12px;color:var(--muted)}.reader-settings{justify-self:end;display:flex;align-items:center;gap:7px}.reader-layout{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:220px minmax(0,760px);justify-content:center;gap:36px;padding:34px 20px 80px}.side-panel{position:sticky;top:170px;height:max-content}.side-stat{display:flex;justify-content:space-between}.progress{height:7px;background:#ddd6c9;border-radius:20px;overflow:hidden;margin:9px 0 22px}.progress i{display:block;width:0;height:100%;background:var(--accent)}.side-link{width:100%;padding:13px;text-align:left;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer}.side-link b{float:right}.side-help{font-size:12px;line-height:1.5;color:var(--muted)}.reader-paper{background:var(--paper);border:1px solid #e7e0d5;box-shadow:var(--shadow);padding:clamp(30px,6vw,72px);min-height:80vh}.book-text{font:var(--reader)/1.82 Georgia,'Times New Roman',serif;color:#201e1b}.book-text p{margin:0 0 1.25em}.book-text h2,.book-text h3{font-family:Georgia,serif;margin:2.2em 0 1em}.word{cursor:pointer;border-radius:4px}.word:hover{background:#fae2a8}.word.known{background:transparent}.loading{padding:50px;text-align:center;color:var(--muted)}.word-popover{position:fixed;z-index:100;width:min(330px,calc(100vw - 24px));background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 25px 70px rgba(25,22,18,.28);padding:22px}.popover-close{position:absolute;right:10px;top:8px;border:0;background:transparent;font-size:24px;cursor:pointer}.word-sound{border:0;background:#eff7f4;border-radius:50%;width:39px;height:39px;cursor:pointer}.word-main{font:700 30px Georgia,serif;margin-top:9px}.phonetic{color:#9a948c;margin-top:2px}.translation{font-size:20px;margin:15px 0 18px;min-height:28px}.popover-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.popover-actions button{padding:11px;border-radius:10px;border:0;font-weight:800;cursor:pointer}.known{background:#d9f1e8;color:#11644f}.learn{background:#fee8b7;color:#72500b}.selection-translate{position:fixed;z-index:90;background:#1d1b18;color:#fff;border:0;border-radius:10px;padding:10px 13px;box-shadow:var(--shadow);cursor:pointer}.vocab-view{max-width:900px;margin:0 auto;padding:38px 20px}.vocab-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:30px}.vocab-head h2{font:700 38px Georgia,serif;margin:0}.vocab-head p{color:var(--muted)}.vocab-list{display:grid;gap:10px}.vocab-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;display:grid;grid-template-columns:1fr 1fr auto;gap:18px;align-items:center}.vocab-item strong{font:700 21px Georgia,serif}.vocab-item button{border:0;background:#f2eee6;border-radius:9px;padding:9px;cursor:pointer}.empty{padding:50px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:15px}.modal{position:fixed;inset:0;background:rgba(24,22,19,.55);z-index:200;display:grid;place-items:center;padding:16px}.modal[hidden]{display:none}.modal-card{width:min(520px,100%);background:#fff;border-radius:20px;padding:28px;position:relative}.modal-card h2{font:700 31px Georgia,serif;margin:0 0 10px}.modal-card p{color:var(--muted)}.modal-close{position:absolute;right:14px;top:10px;border:0;background:transparent;font-size:28px;cursor:pointer}.modal form{display:grid;gap:13px}.modal label{display:grid;gap:6px;font-size:13px;font-weight:700}.modal input[type=text],.modal input:not([type]){height:45px;border:1px solid var(--line);border-radius:10px;padding:0 12px}.file-drop{border:2px dashed var(--line);padding:20px;border-radius:12px;text-align:center;cursor:pointer}.file-drop input{width:100%}.file-drop span{font-size:15px}.file-drop small{color:var(--muted)}.wide{width:100%}.upload-status{font-size:13px}.dark{--bg:#191b1c;--paper:#232526;--ink:#f1eee8;--muted:#a9a49d;--line:#343637}.dark .topbar,.dark .reader-toolbar{background:rgba(25,27,28,.94)}.dark .icon-btn,.dark .search,.dark .hero-card,.dark .side-link,.dark .vocab-item,.dark .modal-card,.dark .word-popover{background:#252728;color:var(--ink)}.dark .book-text{color:#eee}.dark .level{background:#2d3031}.dark .hero{background:linear-gradient(135deg,#20342f,#3a3023)}.dark .hero p{color:#c5c0b8}
@media(max-width:950px){.books-grid{grid-template-columns:repeat(3,1fr);padding:0 20px}.section-head{padding:0 20px}.hero{margin:20px;border-radius:22px}.reader-layout{grid-template-columns:1fr}.side-panel{position:static;display:grid;grid-template-columns:1fr 1fr;gap:12px}.side-help{grid-column:1/-1}.reader-paper{padding:42px}}
@media(max-width:640px){.topbar{height:62px;padding:0 14px}.brand span:last-child{display:none}.primary-btn{padding:10px 12px}.hero{grid-template-columns:1fr;padding:28px 22px;margin:14px}.hero-card{display:none}.hero h1{font-size:42px}.hero p{font-size:16px}.section-head{align-items:stretch;flex-direction:column}.search{min-width:0}.books-grid{grid-template-columns:repeat(2,1fr);gap:14px}.cover{padding:16px}.cover strong{font-size:21px}.reader-toolbar{top:62px;height:auto;min-height:67px;padding:10px 12px;grid-template-columns:auto 1fr auto;gap:9px}.reader-title{min-width:0}.reader-title strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reader-settings #fontLabel{display:none}.reader-layout{padding:0}.side-panel{display:none}.reader-paper{border:0;box-shadow:none;padding:26px 20px}.book-text{line-height:1.7}.vocab-item{grid-template-columns:1fr auto}.vocab-item .translation-cell{grid-column:1/-1;grid-row:2}.vocab-head{flex-direction:column;gap:22px}}
.translate-tip{position:fixed;z-index:150;max-width:min(260px,calc(100vw - 16px));padding:6px 10px;border-radius:8px;background:#1d1b18;color:#fff;font:700 15px/1.25 Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;box-shadow:0 8px 24px rgba(25,22,18,.22);pointer-events:none;white-space:normal;text-align:center}.translate-tip[hidden]{display:none}.word{cursor:pointer}.word:hover,.word.hovered{background:#fae2a8}.word-popover,.selection-translate{display:none!important}
.dark .translate-tip{background:#f1eee8;color:#1d1b18}
.translate-tip{display:flex;align-items:center;gap:8px;pointer-events:none}
.tip-translation{display:block;min-width:0}
.tip-add{width:24px;height:24px;border:0;border-radius:7px;background:#d9f1e8;color:#11644f;font:900 16px/1 Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;cursor:pointer;flex:0 0 auto;pointer-events:auto}
.tip-add:hover{background:#bfe7d9}
.tip-add.added{background:#167c64;color:#fff}
.dark .tip-add{background:#173a33;color:#d9f1e8}
.dark .tip-add.added{background:#d9f1e8;color:#11644f}
.audio-player{display:flex;align-items:center;gap:6px;margin-right:8px;padding:4px 7px 4px 4px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.55)}
.audio-player .icon-btn{min-width:34px;width:34px;height:34px;border-radius:9px}
.audio-player.playing .audio-main{background:var(--accent);color:#fff}
.audio-mark{height:34px;border:1px solid var(--line);background:#fff;color:var(--muted);border-radius:9px;padding:0 10px;font:800 12px Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;cursor:pointer}
.audio-mark.active{background:#d9f1e8;color:#11644f;border-color:#c3e4d8}
.audio-player span{font-size:12px;font-weight:800;color:var(--muted);min-width:45px}
.audio-speed{height:34px;min-width:30px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;font:900 16px Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;cursor:pointer}
.audio-speed:disabled{opacity:.38;cursor:default}
.audio-rate{min-width:34px!important;text-align:center;color:var(--ink)!important}
.audio-voice{height:34px;max-width:170px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;padding:0 28px 0 9px;font:800 12px Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.word.speaking{background:#bfeadf!important;color:#103f35;box-shadow:0 0 0 2px #bfeadf}
.word.known.speaking{background:#bfeadf!important}
.dark .audio-player{background:rgba(37,39,40,.65)}
.dark .audio-mark,.dark .audio-speed,.dark .audio-voice{background:#252728;color:var(--ink)}
.dark .audio-mark.active{background:#173a33;color:#d9f1e8;border-color:#25584c}
.reader-toolbar{min-height:70px;height:auto}
.reader-settings{flex-wrap:wrap;justify-content:flex-end}
@media(max-width:1080px){.audio-voice{max-width:126px}.audio-player span#audioStatus{display:none}}
@media(max-width:780px){.audio-player span#audioStatus{display:none}.audio-mark{padding:0 8px}.reader-settings{gap:5px}.audio-voice{max-width:104px}}
@media(max-width:640px){.audio-player{margin-right:2px;gap:4px;padding-right:4px}.audio-player .icon-btn,.audio-mark,.audio-speed,.audio-voice{height:32px}.audio-player .icon-btn{min-width:32px;width:32px}.audio-mark{font-size:11px;padding:0 7px}.audio-speed{min-width:28px}.audio-rate{min-width:31px!important}.audio-voice{max-width:88px;padding-left:7px}}
.vocab-mode{display:flex;gap:6px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:4px}
.vocab-mode button{height:34px;border:0;border-radius:9px;background:transparent;color:var(--muted);padding:0 12px;font:800 13px Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;cursor:pointer}
.vocab-mode button.active{background:#d9f1e8;color:#11644f}
.vocab-item--both{grid-template-columns:1fr 1fr auto}
.vocab-card{grid-template-columns:1fr auto;padding:0;overflow:hidden}
.vocab-flip{min-height:82px;border:0;background:#fff;color:var(--ink);text-align:left;padding:18px 22px;cursor:pointer;display:grid;align-items:center}
.vocab-flip strong{font:700 24px Georgia,serif}
.vocab-flip small{display:block;margin-top:7px;color:var(--muted);font:800 12px Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.vocab-face{display:grid}
.vocab-back{display:none}
.vocab-card.flipped .vocab-front{display:none}
.vocab-card.flipped .vocab-back{display:grid}
.vocab-card.flipped .vocab-flip{background:#f7fbf8}
.vocab-delete{align-self:center;margin-right:16px;border:0;background:#f2eee6;border-radius:9px;padding:9px 12px;cursor:pointer;font:800 13px Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.vocab-item .vocab-flip{border:0;background:#fff;border-radius:0;padding:18px 22px}
.vocab-item .vocab-delete{border:0;background:#f2eee6;border-radius:9px;padding:9px 12px}
.dark .vocab-mode,.dark .vocab-flip{background:#252728;color:var(--ink)}
.dark .vocab-card.flipped .vocab-flip{background:#20302c}
.dark .vocab-mode button.active{background:#173a33;color:#d9f1e8}
@media(max-width:640px){.vocab-head .vocab-mode{width:100%;justify-content:space-between}.vocab-mode button{flex:1}.vocab-card,.vocab-item--both{grid-template-columns:1fr}.vocab-delete{margin:0 16px 16px;justify-self:start}.vocab-item--both .vocab-delete{margin:0}}