:root{--paper:#f7f3ea;--paper2:#fffcf6;--ink:#26332f;--ink2:#59675e;--teal:#306d72;--teal2:#478789;--mist:#dce7db;--line:#d4cabe;--gold:#e6ab54;--rose:#f1d6cb;--shadow:0 12px 30px rgba(52,64,51,.08);--arabic:'Amiri','Noto Naskh Arabic','Noto Sans Arabic',serif;--serif:'Noto Serif CJK SC','Songti SC','STSong',serif;--sans:'Noto Sans CJK SC','PingFang SC','Microsoft YaHei',sans-serif}
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.sidebar{height:100vh;position:sticky;top:0;background:#f2eee4;border-right:1px solid #c9cfc6;padding:32px 19px;display:flex;flex-direction:column;gap:27px;box-shadow:8px 0 30px rgba(30,50,40,.035)}.logo-wrap{display:flex;align-items:center;gap:12px;padding:8px}.logo-mark{width:48px;height:48px;border:1px solid #8fa8a1;border-radius:16px;display:grid;place-items:center;background:#e1e9de;transform:rotate(-4deg);font-family:var(--serif);font-weight:900;font-size:23px;color:#2d595c}.logo-text{font-family:var(--serif);font-size:21px;font-weight:900;letter-spacing:2px}.logo-sub{font-size:10px;color:#8b9186;letter-spacing:1px}.side-nav{display:grid;gap:7px}.nav-link{border:0;border-radius:12px;background:transparent;display:flex;align-items:center;gap:14px;text-align:left;padding:12px 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#d9d2c6;border-radius:12px;width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;font-size:20px;transition:.2s;flex-shrink:0}.icon-btn:hover{border-color:#619295;background:#ecf4ed}.icon-btn.star.on{color:#e1a144}.tiny-chip{border:1px solid var(--line);background:#fffcf5ad;border-radius:24px;padding:8px 13px;color:#566d64;font-size:12px}.paper{background:var(--paper2);border:1px solid #d8cabc;border-radius:18px;box-shadow:var(--shadow);position:relative;overflow:hidden}.paper:after{content:"";pointer-events:none;position:absolute;inset:0;opacity:.17;background-image:url("data:image/svg+xml,%3Csvg width='130' height='130' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M8 22 Q30 12 48 27 M90 107 Q104 93 126 100' stroke='%23b7a98d' stroke-width='.5' fill='none'/%3E%3C/svg%3E");background-repeat:repeat}.paper>*{position:relative;z-index:1}.panel{padding:24px}.page-grid{display:grid;grid-template-columns:minmax(0,1.35fr) 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#bccdc0;background:#edf2e9;padding:17px;border-radius:12px;text-align:left;margin:19px auto;width:100%;animation:in .25s}.word-reveal .meaning{font-size:19px;font-weight:700}.word-reveal .ar-example{font-size:23px;margin-top:8px}.progress-line{margin:18px 0 0}.word-info{display:flex;gap:10px;justify-content:center;color:#7d897e;flex-wrap:wrap}.word-info span{background:#f0e9db;padding:4px 11px;border-radius:30px;font-size:11px}.notice{background:#edf3ee;border:1px solid #c8d8cb;border-radius:13px;padding:14px 17px;color:#4e6e61}.muted{color:#809085}.tabs{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin:4px 0 18px}.tab{background:#f0eee9;border:1px solid #e4ddd2;border-radius:26px;padding:7px 15px;color:#66736b;font-size:12px;cursor:pointer}.tab.active{background:#3d7b80;color:white;border-color:#3d7b80}.searchbox{display:flex;align-items:center;gap:9px;border:1px solid #d3cabe;background:#fbfaf5;border-radius:15px;padding:10px 14px;min-height:48px}.searchbox 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.arabic{font-size:22px}.conj-table{border-collapse:collapse;width:100%}.conj-table th,.conj-table td{border-bottom:1px solid #e8e0d5;padding:8px 10px;text-align:left}.conj-table .arabic{font-size:21px}.conj-table th{color:#78877d;font-size:12px;background:#f2f1e9}.grammar-card{padding:34px 35px;min-height:330px;display:flex;flex-direction:column;justify-content:space-between}.grammar-name{font-size:20px;font-family:var(--serif);font-weight:850;color:#2b4642;margin:14px 0}.grammar-body{font-size:18px;line-height:2.1;white-space:pre-wrap;margin-bottom:20px}.grammar-nav{display:flex;justify-content:space-between;align-items:center;gap:10px}.grammar-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px}.grammar-actions .btn{font-family:var(--arabic);font-size:23px}.reading-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:19px}.reading-paper{padding:32px 42px}.reading-arabic-title{font-size:33px;text-align:center;margin:6px 0 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canvas{touch-action:none}.pdf-viewport.painting canvas{pointer-events:auto;cursor:crosshair}.book-actions{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin-bottom:13px}.book-side{padding:22px}.note-textarea{width:100%;min-height:110px;padding:11px 12px;border-radius:12px;border:1px solid #d7cdba;background:#fffdf7;resize:vertical;line-height:1.75}.profile-cover{padding:23px;display:flex;gap:18px;align-items:center;background:linear-gradient(120deg,#f9f4e9,#e4ece4)}.avatar{width:83px;height:83px;border-radius:50%;border:3px solid #e4d2bb;object-fit:cover;object-position:50% 15%}.profile-name{font-size:22px;font-weight:800;font-family:var(--serif)}.menu-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px;border-bottom:1px solid #eaded0}.menu-row button{border:0;background:transparent;text-align:left;width:100%;display:flex;justify-content:space-between;gap:9px}.achievements{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.achievement{min-height:150px;text-align:center;padding:20px 10px 15px;border:1px solid #d6cabc;border-radius:14px;background:#fcf7ef}.medal{width:76px;height:76px;margin:auto;display:grid;place-items:center;background:#dfe9dc;border:2px solid #acbdb0;border-radius:50%;font-size:36px;box-shadow:0 0 0 5px #f7f5ec}.achievement.locked{filter:grayscale(.95);opacity:.67}.achievement b{display:block;margin-top:12px}.achievement small{font-size:11px;color:#758277}.empty{text-align:center;padding:44px 20px;color:#8b968b}.bottom-nav{display:none}.modal-backdrop{position:fixed;inset:0;background:rgba(33,47,41,.38);backdrop-filter:blur(3px);z-index:300;display:grid;place-items:center;padding:14px;animation:in .2s}.modal{position:relative;background:#fffaf0;border:1px solid #dccdb5;border-radius:18px;box-shadow:0 24px 80px #26382c55;padding:28px;max-width:540px;width:100%;max-height:85vh;overflow:auto}.modal .close{position:absolute;right:16px;top:16px}.modal h3{margin:0 34px 16px 0;font-family:var(--serif);font-size:22px}.modal p{white-space:pre-wrap}.modal .arabic{font-size:28px}#toast{position:fixed;z-index:550;bottom:26px;left:50%;transform:translateX(-50%);background:#2d5757;color:#fff;padding:11px 22px;border-radius:30px;box-shadow:0 8px 24px #0002;opacity:0;pointer-events:none;transition:opacity .25s}#toast.show{opacity:1}.mobile-only{display:none}.mobile-title{display:none}.root-group{display:flex;gap:8px;flex-wrap:wrap}.root-group button{padding:6px 12px;border:1px solid #d6c9b4;border-radius:12px;background:#f4efe4;font:20px var(--arabic)}.little-flora{position:absolute;right:11px;bottom:4px;font-size:24px;opacity:.38}.spacer16{height:16px}.slidein{animation:in .3s ease}@keyframes in{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}.meta-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.module-intro{margin:0 0 17px;color:#7c887e;font-size:13px}.mini-rank{border:1px solid #d8cfc1;border-radius:14px;padding:18px;background:#fefaf3}.mini-rank strong{display:block;font-size:19px}.kbd{border:1px solid #d1ccbe;border-radius:5px;font-size:11px;padding:2px 6px}.reading-list-card{border:1px solid #d8cebc;border-radius:15px;padding:21px;background:#fdfaf4;cursor:pointer;transition:.2s}.reading-list-card:hover{border-color:#739899;transform:translateY(-2px)}.reading-list-card .arabic{font-size:25px;margin-top:9px}.small-annotation{font-size:12px;color:#718579}.view-area{animation:in .25s ease}
@media(max-width:1100px){.sidebar{width:206px;padding:24px 13px}.shell{grid-template-columns:206px minmax(0,1fr)}.main{padding:23px 23px 70px}.reading-layout,.book-split{grid-template-columns:minmax(0,1fr) 230px}.reading-paper{padding:24px}}@media(max-width:780px){.shell{display:block;background:var(--paper)}.sidebar{display:none}.main{padding:16px 15px 96px;max-width:650px}.page-title{font-size:23px}.eyebrow{font-size:10px}.topbar{margin-bottom:12px}.page-grid,.reading-layout,.book-split{grid-template-columns:1fr}.hero{min-height:229px;padding:24px}.hero-title{font-size:33px}.hero .mascot{width:184px;height:193px;right:-5px}.hero-copy{max-width:65%}.feature-grid{gap:10px}.feature{padding:15px 11px;font-size:17px;min-height:79px;gap:7px}.feature-icon{width:38px;height:38px;font-size:23px}.panel{padding:19px}.top-actions .tiny-chip{display:none}.mobile-only{display:block}.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:120;display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:#fdfbf4;border-top:1px solid #d4cbbb;padding:8px 0 calc(5px + env(safe-area-inset-bottom));box-shadow:0 -10px 24px #394c3f13}.bottom-nav button{background:transparent;border:0;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;color:#6d7d71}.bottom-nav button.active{color:#2f7375;font-weight:750}.bottom-nav button .nav-ico{font-size:20px}.word-card{min-height:460px;padding:19px}.word-choice .btn{font-size:25px}.reading-paper{padding:18px 17px}.reading-text{font-size:22px}.reading-side{display:none}.word-row{grid-template-columns:18px minmax(75px,1fr) minmax(75px,1fr) 29px 23px;gap:4px;padding:9px 0}.word-row .arabic{font-size:23px}.pill{display:none}.word-row .meaning{font-size:11px}.achievements{grid-template-columns:repeat(3,1fr);gap:8px}.medal{height:54px;width:54px;font-size:25px}.achievement{padding:14px 5px;min-height:123px}.achievement b{font-size:12px}.stats-row{gap:6px}.modal{padding:22px}.book-side{order:-1}.book-split .pdf-viewport{max-width:100%}}@media(max-width:360px){.feature{font-size:15px}.hero-title{font-size:27px}.hero-copy{max-width:68%}.hero .mascot{width:150px}.word-choice .btn{font-size:21px}.reading-text{font-size:19px}}

/* v0.2: 保持阿文段落整块 RTL，解决续行靠左 */
.arabic{font-family:var(--arabic)}
.arabic-block,.ar-example,.word-reveal .ar-example,.field .arabic[dir="rtl"],.modal .arabic[dir="rtl"]{display:block;direction:rtl;text-align:right;unicode-bidi:plaintext;white-space:normal;overflow-wrap:break-word;word-break:normal;line-height:2;}
.word-reveal .ar-example{margin:10px 0 7px;max-width:100%;font-size:clamp(21px,2vw,28px)}
/* 电子书批注 */
.ink-toolbar{margin:12px 0 16px;padding:11px;background:#edf1e9;border:1px solid #cfdace;border-radius:15px;display:flex;flex-direction:column;gap:10px}
.ink-tools,.ink-settings{display:flex;align-items:center;flex-wrap:wrap;gap:7px}
.color-dots{display:flex;align-items:center;gap:5px;margin-right:12px}
.ink-dot{width:28px;height:28px;border-radius:50%;border:3px solid #fff;background:var(--dot);box-shadow:0 0 0 1px #bbb9b0;cursor:pointer}.ink-dot.selected{box-shadow:0 0 0 3px #438083}
.ink-width{display:flex;align-items:center;gap:8px;font-size:12px;color:#627468}.ink-width input{width:110px;accent-color:#3e8082}.ink-width output{width:18px;font-variant-numeric:tabular-nums}
.ink-toolbar .btn:disabled,.book-actions .btn:disabled{opacity:.35;cursor:not-allowed}
/* 登录、个人信息、反馈 */
.auth-main{max-width:1100px;display:flex;align-items:center;min-height:100vh}.auth-layout{display:grid;grid-template-columns:1fr 420px;gap:24px;width:100%;align-items:stretch}
.auth-intro{padding:30px;min-height:565px;position:relative;overflow:hidden;background:linear-gradient(160deg,#fdf7eb,#e4eee5)}.auth-intro .auth-mascot{height:270px;object-fit:contain;display:block;margin:20px auto 6px}.auth-intro h2{font-size:23px;font-family:var(--serif)}.auth-intro p{color:#60766a}.auth-panel{padding:31px}.auth-panel h2{font-size:22px;font-family:var(--serif)}.stack-form{display:grid;gap:14px;margin-top:16px}.stack-form label{display:grid;gap:6px;font-size:13px;font-weight:650;color:#53675f}.stack-form input,.stack-form select,.stack-form textarea{border:1px solid #cdcfc4;border-radius:12px;background:#fffdfa;padding:11px 12px;min-width:0;width:100%;font-weight:400;outline:none}.stack-form input:focus,.stack-form textarea:focus{border-color:#4a8e87}.stack-form textarea{resize:vertical}.auth-divider{text-align:center;color:#87918a;margin:15px auto;font-size:12px}.profile-controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:9px}.profile-main{min-width:0}.profile-name{overflow-wrap:anywhere}.avatar-emoji{display:grid;place-items:center;background:#eee9dd;font-size:38px}.avatar-presets{display:flex;gap:9px;flex-wrap:wrap;padding:14px 0}.avatar-preset{padding:3px;border:2px solid transparent;border-radius:15px;background:#f3efe5}.avatar-preset.chosen{border-color:#3b8682}.avatar-small{width:52px;height:52px;font-size:27px}.profile-edit-top{display:flex;align-items:center;gap:18px}.upload-label{display:block;margin:7px 0 13px;padding:11px;border:1px dashed #afbfb4;border-radius:11px;color:#526d64;cursor:pointer}.upload-label input{display:block;width:100%;font-size:12px;margin-top:6px}.feedback-item{padding:16px 0;border-bottom:1px solid #e3dbd0;overflow-wrap:anywhere}.feedback-item .meta-line{justify-content:space-between}.feedback-item p{font-size:13px;white-space:pre-wrap}.feedback-thumb{max-width:100%;max-height:180px;border-radius:8px}.auth-panel .caption{font-size:12px}
@media(max-width:850px){.auth-layout{grid-template-columns:1fr}.auth-intro{min-height:180px;padding:18px}.auth-intro .auth-mascot{display:none}.auth-main{align-items:flex-start;min-height:auto}.auth-panel{padding:20px}.book-split{grid-template-columns:1fr}.book-side{order:initial}.ink-toolbar{padding:8px}.ink-settings{gap:9px}.ink-width input{width:85px}}