@charset "UTF-8";
:root{--paper:#f5f3ed;--white:#fffef9;--ink:#203730;--muted:#6f7971;--green:#173f39;--green-soft:#e5ece4;--orange:#f0a16b;--line:#dedfd4;--red:#a13b30;--serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;--sans:"PingFang SC","Microsoft YaHei",sans-serif;--radius:18px}
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p{font-size:13px;color:var(--muted);flex:1}.pack-list{display:grid;gap:13px}.pack-row{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:21px;display:flex;justify-content:space-between;gap:20px;align-items:center}.pack-row strong{display:block;font-size:15px}.pack-row p{font-size:12px;color:var(--muted);margin:5px 0}.pack-row .actions{display:flex;gap:8px;flex-wrap:wrap}.notice{font-size:12px;color:var(--muted);padding:13px 17px;background:#eeece3;border-radius:9px;margin:18px 0;line-height:1.8}.storage-alert{background:#fae6da;color:#783e23;padding:12px 20px;font-size:13px}.dialog-backdrop{position:fixed;inset:0;background:#12261db3;z-index:40;display:flex;align-items:center;justify-content:center;padding:20px}.dialog{background:var(--white);max-width:580px;width:100%;max-height:85dvh;overflow:auto;border-radius:20px;padding:28px;box-shadow:0 20px 70px #0003}.dialog h2{font-size:24px;margin-bottom:12px}.dialog p{font-size:14px}.dialog .actions{display:flex;gap:10px;justify-content:flex-end;margin-top:24px;flex-wrap:wrap}.dialog ul{font-size:13px;padding-left:20px}.dialog .field{width:100%;margin:6px 0 16px}.toast{position:fixed;bottom:30px;left:calc(50% + 119px);transform:translate(-50%,20px);background:#203b32;color:#fff;padding:12px 22px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:60;max-width:calc(100vw - 32px);width:max-content;font-size:13px;box-shadow:0 6px 28px #0002}.toast.visible{opacity:1;transform:translate(-50%,0)}.bottom-nav{display:none}.search-count{font-size:12px;color:var(--muted);margin-bottom:14px}.markdown pre{padding:16px;background:#eeefe7;overflow:auto;border-radius:10px;font-size:12px;line-height:1.7}.markdown code{font-size:.9em;background:#e8eae1;border-radius:3px;padding:2px 4px;overflow-wrap:anywhere}.markdown pre code{background:transparent;padding:0;overflow-wrap:normal}.markdown h2{margin-top:25px;font-size:22px}.markdown 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main:focus{outline:none}.brand small{font-size:9px;letter-spacing:1.1px;white-space:nowrap}.page-intro h1{text-wrap:balance}
@media(min-width:1450px){main{padding-top:47px}.hero{min-height:275px;padding:42px}.home-grid{gap:30px}}
@media(max-width:1050px){.sidebar{width:196px;padding:30px 18px}.workspace{margin-left:196px}.topbar{padding:0 28px}main{padding:30px 28px 60px}.toast{left:calc(50% + 98px)}.hero{padding:28px;grid-template-columns:1fr 110px}.hero-art{width:95px;height:95px}.hero-art span{font-size:56px}.home-grid{gap:16px}.stat{padding:0 14px}}
@media(max-width:740px){body{font-size:14px}.sidebar{display:none}.workspace{margin-left:0}.topbar{height:76px;padding:0 21px;background:var(--paper)}.topbar-title{display:none}.topbar .brand{display:flex;font-size:23px}.topbar .brand img{width:32px;height:32px}.topbar .brand small{font-size:8px;letter-spacing:1.5px;margin-top:5px;color:var(--muted)}.topbar-actions{gap:9px}.local-badge{font-size:10px}.local-badge .badge-label{display:none}.icon-btn{width:35px;height:35px}main{padding:27px 21px calc(105px + env(safe-area-inset-bottom));min-height:calc(100dvh - 76px)}.page-intro{gap:10px;margin-bottom:23px}.page-intro .eyebrow{font-size:9px;margin-bottom:9px}.page-intro h1{font-size:29px}.page-intro p{font-size:12px;margin-top:8px}.date-stamp{font-size:10px}.date-stamp strong{font-size:24px}.hero{border-radius:16px;padding:25px;grid-template-columns:1fr;min-height:246px}.hero h2{font-size:25px;max-width:240px;position:relative;z-index:1}.hero p{font-size:12px;max-width:240px;position:relative;z-index:1}.hero-art{position:absolute;right:-17px;top:40px;width:103px;height:103px;opacity:.35}.hero .eyebrow{font-size:9px}.hero .button{position:relative;z-index:1;font-size:13px;padding:10px 15px}.stats{margin-top:23px;margin-bottom:26px;padding-bottom:20px}.stat{display:block;padding:0 14px}.stat strong{font-size:29px;display:block;line-height:1.3}.stat span{font-size:10px;display:block;margin-top:6px}.home-grid{grid-template-columns:1fr;gap:17px}.panel{padding:22px}.section-head{margin:24px 0 15px}.section-head h2{font-size:20px}.note-card blockquote{font-size:18px}.note-card .quote-mark{font-size:35px}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;align-items:stretch;z-index:20;padding:9px 8px calc(8px + env(safe-area-inset-bottom));background:#fffef9f5;backdrop-filter:blur(14px);border-top:1px solid var(--line)}.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;text-decoration:none;color:#8a9387;font-size:10px;min-height:45px;justify-content:center}.bottom-nav a.active{color:var(--green);font-weight:700}.bottom-nav a.active svg{background:var(--green-soft);border-radius:6px;box-shadow:0 0 0 5px var(--green-soft)}.toast{left:50%;bottom:calc(92px + env(safe-area-inset-bottom));font-size:12px}.toolbar{gap:9px}.toolbar select{flex:1;min-width:0;width:0;font-size:12px;padding:10px}.toolbar input{width:100%;flex-basis:100%;font-size:13px}.course-summary{padding:21px 17px;gap:12px}.course-summary .index{font-size:27px;min-width:29px}.course-summary h2{font-size:16px}.course-summary p{font-size:11px}.course-summary>.tag{display:none}.lessons{padding:0 18px 6px 58px}.lesson-row{gap:9px}.lesson-row strong{font-size:13px}.lesson-row small{font-size:10px}.reader h1{font-size:27px}.reader-block{margin:25px 0}.reader-block h2{font-size:18px}.reader-block p,.reader-block li{font-size:14px;line-height:1.95}.spoken{font-size:16px}.callout{padding:17px 18px;font-size:13px}.reader-footer .button{flex-basis:100%}.question-card{padding:23px 21px;margin:16px 0;border-radius:16px}.question-card h2{font-size:22px}.question-meta{font-size:11px;margin-bottom:18px}.question-card .prompt-hint{font-size:12px}.question-bottom{gap:8px}.question-bottom .button{font-size:12px;padding:10px 13px}.rating{gap:6px}.rating button{font-size:11px}.segmented{gap:24px}.library-grid{grid-template-columns:1fr;gap:14px}.pack-row{display:block;padding:19px}.pack-row .actions{margin-top:14px}.pack-row .button{font-size:12px;padding:8px 12px;min-height:39px}.dialog{padding:23px}.review-item{padding:17px;gap:10px}.review-item strong{font-size:13px}.question-bottom .timer{font-size:21px;min-width:58px}.breadcrumb{font-size:11px;margin-bottom:22px}.notice{font-size:11px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
