:root{
  --brand:#b5121b;
  --brand-deep:#8e0d14;
  --brand-soft:#fbeceb;
  --brand-tint:#fdf5f4;
  --ink:#1d1b19;
  --ink-2:#4a4642;
  --muted:#8c8580;
  --faint:#b3aca6;
  --line:#e9e4de;
  --line-soft:#f0ece7;
  --bg:#f6f4f1;
  --panel:#ffffff;
  --rail:#fbfaf8;
  --green:#2f7d5c;
  --green-soft:#eaf4ef;
  --amber:#a86b1e;
  --amber-soft:#fbf2e4;
  --blue:#2e5e8c;
  --blue-soft:#eaeff5;
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 1px 2px rgba(35,28,22,.04), 0 12px 30px -22px rgba(35,28,22,.35);
  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"Inter","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;padding:0;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
svg{display:block}
[hidden]{display:none!important}
::selection{background:#f3d3d2}

/* scrollbars */
.view::-webkit-scrollbar,.syllabus::-webkit-scrollbar,.lesson-body::-webkit-scrollbar,.exam-list::-webkit-scrollbar{width:8px;height:8px}
.view::-webkit-scrollbar-thumb,.syllabus::-webkit-scrollbar-thumb,.lesson-body::-webkit-scrollbar-thumb,.exam-list::-webkit-scrollbar-thumb{background:#ded7d1;border-radius:8px}
.view::-webkit-scrollbar-track{background:transparent}

/* ---------- shell ---------- */
.app{display:flex;height:100vh;overflow:hidden}
.sidebar{width:218px;flex:0 0 218px;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;z-index:20}
.brand{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:22px 20px 0}
.brand-logo{height:58px;width:auto;display:block}
.brand-title{font-size:13px;font-weight:600;color:var(--muted);padding:0 0 10px;letter-spacing:.14em}
.nav{flex:1;overflow-y:auto;padding:4px 12px}
.nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 12px;border-radius:9px;color:var(--ink-2);font-size:13.5px;position:relative;transition:background .15s,color .15s}
.nav-item:hover{background:#f7f4f1;color:var(--ink)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-icon{width:17px;height:17px;flex:0 0 17px;display:inline-flex;color:currentColor;opacity:.85}
.nav-icon svg{width:17px;height:17px}
.nav-caret{margin-left:auto;width:7px;height:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.6;transition:transform .2s}
.nav-parent[aria-expanded="false"] .nav-caret{transform:rotate(-45deg) translateY(-2px)}
.nav-sub{display:flex;flex-direction:column;gap:2px;padding:2px 0 6px}
.nav-sub.hidden{display:none}
.nav-child{padding-left:39px;font-size:13px}
.nav-child::before{content:"";position:absolute;left:21px;top:0;bottom:0;width:1px;background:var(--line-soft)}
.nav-badge{margin-left:auto;min-width:18px;height:18px;border-radius:9px;background:var(--brand);color:#fff;font-size:10.5px;display:flex;align-items:center;justify-content:center;padding:0 5px;font-weight:600}
.sidebar-foot{padding:12px;border-top:1px solid var(--line-soft)}
.user{display:flex;align-items:center;gap:10px;padding:8px 9px;border-radius:10px}
.user:hover{background:#f7f4f1}
.avatar{width:30px;height:30px;border-radius:50%;background:#efe7e1;color:#7a5c48;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:600;flex:0 0 30px}
.user-meta{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.user-meta strong{font-size:12.5px;font-weight:600}
.user-meta span{font-size:11px;color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.user-actions{margin-left:auto;display:flex;gap:2px}
.icon-btn{width:28px;height:28px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;color:var(--muted);transition:background .15s,color .15s}
.icon-btn:hover{background:#f1ede9;color:var(--ink)}
.icon-btn svg{width:15px;height:15px}

.main{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg)}
.topbar{height:60px;flex:0 0 60px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:rgba(255,255,255,.86);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.topbar-left{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--muted)}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.topbar-sep{opacity:.5}
.topbar-right{display:flex;align-items:center;gap:12px}
.topbar-progress-label{font-size:12.5px;color:var(--ink-2)}
.progress-track{width:190px;height:5px;border-radius:3px;background:#ece7e2;overflow:hidden;display:block}
.progress-fill{display:block;height:100%;background:var(--green);border-radius:3px;transition:width .4s ease}
.topbar-icon{border:1px solid var(--line);background:#fff}
.view{flex:1;overflow-y:auto;overflow-x:hidden;position:relative}

/* ---------- generic ---------- */
.page{padding:30px 34px 56px;max-width:1400px;margin:0 auto}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:22px}
.page-title{font-size:26px;font-weight:650;letter-spacing:-.01em}
.page-desc{color:var(--muted);font-size:13px;margin-top:7px;max-width:640px}
.eyebrow{font-size:11.5px;letter-spacing:.14em;color:var(--brand);font-weight:600;text-transform:uppercase}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 18px;border-radius:9px;font-size:13px;font-weight:600;border:1px solid transparent;transition:all .16s;white-space:nowrap}
.btn svg{width:15px;height:15px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#000}
.btn-ghost{border-color:var(--line);background:#fff;color:var(--ink-2)}
.btn-ghost:hover{border-color:#d8d0c9;background:#fbfaf8}
.btn-soft{background:var(--brand-soft);color:var(--brand)}
.btn-soft:hover{background:#f8dedd}
.btn-sm{height:32px;padding:0 12px;font-size:12px;border-radius:8px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.chip{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 9px;border-radius:6px;font-size:11.5px;font-weight:600;letter-spacing:.02em;white-space:nowrap;flex:0 0 auto}
.chip-green{background:var(--green-soft);color:var(--green)}
.chip-red{background:var(--brand-soft);color:var(--brand)}
.chip-amber{background:var(--amber-soft);color:var(--amber)}
.chip-gray{background:#f3f0ed;color:var(--muted)}
.chip-blue{background:var(--blue-soft);color:var(--blue)}
.chip svg{width:12px;height:12px;flex:0 0 12px}
.nav-parent.active{background:transparent}
.nav-parent.active:hover{background:#f7f4f1}
.exam-state svg{width:12px;height:12px}
.muted{color:var(--muted)}
.tiny{font-size:11.5px}
.divider{height:1px;background:var(--line-soft);border:0;margin:0}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- training ---------- */
.training{display:grid;grid-template-columns:286px minmax(0,1fr);height:calc(100vh - 60px);overflow:hidden}
.syllabus{background:var(--rail);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.syllabus-head{padding:22px 20px 12px;display:flex;align-items:center;justify-content:space-between}
.syllabus-title{font-size:16px;font-weight:650}
.day-badge{font-size:11.5px;color:var(--muted);background:#f1ece7;border-radius:6px;padding:3px 8px}
.syllabus-tools{padding:0 16px 12px}
.search{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:9px;height:36px;padding:0 11px;color:var(--muted)}
.search:focus-within{border-color:#d5c2bd;box-shadow:0 0 0 3px #fbf1f0}
.search svg{width:14px;height:14px;flex:0 0 14px}
.search input{border:0;outline:0;background:transparent;width:100%;font-size:12.5px;color:var(--ink)}
.search input::placeholder{color:var(--faint)}
.chapter-list{flex:1;overflow-y:auto;padding:0 10px 20px}
.chapter-block{margin-bottom:2px}
.chapter-btn{display:flex;align-items:center;gap:9px;width:100%;padding:10px 10px;border-radius:8px;text-align:left;color:var(--ink-2);font-size:12.5px;line-height:1.45}
.chapter-btn:hover{background:#f3efeb}
.chapter-btn.open{background:#f3efeb;color:var(--ink);font-weight:600}
.chapter-no{font-size:11px;color:var(--faint);flex:0 0 auto;font-variant-numeric:tabular-nums}
.chapter-name{flex:1;min-width:0}
.chapter-chevron{width:6px;height:6px;border-right:1.4px solid currentColor;border-bottom:1.4px solid currentColor;transform:rotate(-45deg);transition:transform .2s;opacity:.5;margin-left:auto}
.chapter-btn.open .chapter-chevron{transform:rotate(45deg)}
.chapter-lessons{overflow:hidden;padding:2px 0 6px}
.lesson-item{display:flex;align-items:center;gap:9px;padding:8px 10px 8px 30px;border-radius:8px;font-size:12.5px;color:var(--muted);line-height:1.5;position:relative}
.lesson-item:hover{background:#f5f1ed;color:var(--ink)}
.lesson-item.active{background:#fff;color:var(--ink);font-weight:600;box-shadow:0 0 0 1px var(--line)}
.lesson-item .num{flex:0 0 16px;font-size:11px;color:var(--faint);font-variant-numeric:tabular-nums}
.lesson-item.active .num{color:var(--brand)}
.lesson-state{margin-left:auto;flex:0 0 auto;width:15px;height:15px;color:var(--faint);display:inline-flex}
.lesson-state.done{color:var(--green)}
.lesson-state svg{width:15px;height:15px}
.chapter-exam{display:flex;align-items:center;gap:9px;margin:6px 10px 8px 30px;padding:8px 10px;border-radius:8px;background:#f7f3ef;color:var(--muted);font-size:12px}
.chapter-exam .lock{width:14px;height:14px}
.chapter-exam .tag{margin-left:auto;font-size:10.5px;color:var(--faint)}
.chapter-exam.unlocked{background:var(--brand-soft);color:var(--brand);cursor:pointer}
.chapter-exam.passed{background:var(--green-soft);color:var(--green)}

.lesson-pane{display:flex;flex-direction:column;min-width:0;background:#fff;min-height:0}
.lesson-top{display:flex;align-items:center;gap:20px;padding:14px 34px 0;border-bottom:1px solid var(--line-soft);flex:0 0 auto}
.lesson-status{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:14px;margin-left:auto}
.lesson-status b{color:var(--ink);font-weight:600}
.tabs{display:flex;gap:28px}
.tab{position:relative;padding:10px 0 12px;font-size:13.5px;color:var(--muted);font-weight:500;display:flex;align-items:center;gap:7px}
.tab:hover{color:var(--ink)}
.tab.active{color:var(--ink);font-weight:600}
.tab.active::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--brand);border-radius:2px}
.tab .count{font-size:10.5px;background:#f1ece7;color:var(--muted);border-radius:5px;padding:1px 5px;font-weight:600}
.lesson-nav{display:flex;gap:6px;align-items:center}
.lesson-nav .icon-btn{border:1px solid var(--line)}
.lesson-body{flex:1;overflow-y:auto;min-height:0}
.lesson-wrap{display:grid;grid-template-columns:minmax(0,1fr) 196px;gap:44px;padding:34px 40px 80px 40px;max-width:1180px;margin:0 auto}
.lesson-article{min-width:0;max-width:780px}
.lesson-article h1{font-size:30px;font-weight:650;letter-spacing:-.015em;margin:10px 0 10px;line-height:1.25}
.lede{font-size:14px;color:var(--ink-2);line-height:1.85;padding-bottom:22px;border-bottom:1px solid var(--line-soft);margin-bottom:8px}
.article-content{padding-top:6px}
.article-content h2{font-size:15px;font-weight:650;color:var(--brand);letter-spacing:.01em;margin:34px 0 14px;display:flex;align-items:center;gap:10px}
.article-content h2 .idx{font-family:var(--serif);font-size:13px;opacity:.8}
.article-content h3{font-size:14px;font-weight:650;margin:22px 0 8px;color:var(--ink)}
.article-content p{font-size:13.5px;line-height:1.9;color:var(--ink-2);margin:0 0 12px}
.article-content ul,.article-content ol{margin:0 0 14px;padding-left:2px;display:flex;flex-direction:column;gap:7px}
.article-content li{position:relative;padding-left:18px;font-size:13.5px;line-height:1.8;color:var(--ink-2)}
.article-content ul li::before{content:"";position:absolute;left:4px;top:.76em;width:5px;height:5px;border-radius:50%;background:#c9b9b3}
.article-content ol{counter-reset:li}
.article-content ol li{counter-increment:li}
.article-content ol li::before{content:counter(li) ".";position:absolute;left:0;top:0;color:var(--faint);font-size:12px;font-variant-numeric:tabular-nums}
.article-content strong{color:var(--ink);font-weight:650}
.article-content .hl{background:linear-gradient(transparent 62%,#f9e3e2 62%);padding:0 2px}
.article-table{width:100%;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:6px 0 18px;border-collapse:separate;border-spacing:0;font-size:12.5px}
.article-table th{background:#faf7f4;color:var(--ink);font-weight:600;text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.article-table td{padding:9px 12px;border-bottom:1px solid var(--line-soft);color:var(--ink-2);vertical-align:top;line-height:1.65}
.article-table tr:last-child td{border-bottom:0}
.article-table td:first-child{color:var(--ink);font-weight:500}
.note{border:1px solid #f0e0d6;background:#fdf8f3;border-radius:10px;padding:13px 16px;margin:16px 0 18px;font-size:12.5px;color:#6e5238;line-height:1.75;display:flex;gap:11px}
.note .note-icon{flex:0 0 18px;color:#c58a4a;margin-top:1px}
.note .note-icon svg{width:18px;height:18px}
.note b{color:#5c3f24}
.quote{border-left:2px solid var(--brand);padding:2px 0 2px 16px;margin:16px 0;color:var(--ink);font-size:13.5px;line-height:1.85;font-style:italic}
.quote span{display:block;margin-top:6px;font-style:normal;font-size:11.5px;color:var(--faint)}
.en-block{background:#f8f6f3;border-radius:10px;padding:14px 16px;margin:12px 0 18px;font-size:12.5px;line-height:1.8;color:#4d4741;font-family:"Georgia","Times New Roman",var(--sans)}
.en-block .en-label{display:inline-flex;align-items:center;gap:6px;font-family:var(--sans);font-size:10.5px;letter-spacing:.12em;color:var(--faint);margin-bottom:6px;text-transform:uppercase}
.en-block em{color:var(--brand);font-style:normal}
.takeaways{border-radius:12px;background:linear-gradient(135deg,#fdf6f2,#fbf3f0);border:1px solid #f1e2da;padding:18px 20px;margin:28px 0 0}
.takeaways h3{font-size:12.5px;letter-spacing:.08em;color:#8a6b58;margin:0 0 10px;display:flex;align-items:center;gap:7px}
.takeaways ul{gap:6px;margin:0}
.takeaways li{color:#5c4a3f;font-size:12.5px}
.takeaways li::before{background:#c9a894}
.lesson-actions{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line-soft)}
.lesson-actions .hint{font-size:11.5px;color:var(--faint)}
.toc{position:sticky;top:0;align-self:start;padding-top:8px;border-left:1px solid var(--line-soft);padding-left:18px}
.toc-title{font-size:12px;font-weight:650;margin-bottom:12px}
.toc a{display:block;font-size:11.5px;line-height:1.55;color:var(--muted);padding:5px 0 5px 10px;border-left:1px solid transparent;margin-left:-19px;transition:all .15s}
.toc a:hover{color:var(--ink)}
.toc a.active{color:var(--brand);border-left-color:var(--brand);background:transparent}
.toc .toc-sub{padding-left:20px;font-size:11px}

/* assignments */
.assignment-list{padding:24px 34px 80px;max-width:900px}
.assignment-item{border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:14px;background:#fff}
.assignment-head{display:flex;align-items:center;gap:10px}
.assignment-no{font-size:11px;letter-spacing:.1em;color:var(--brand);font-weight:600}
.assignment-title{font-size:14.5px;font-weight:600}
.assignment-brief{font-size:12.5px;color:var(--muted);line-height:1.8;margin-top:6px}
.assignment-item textarea{margin-top:12px;width:100%;min-height:92px;border:1px solid var(--line);border-radius:9px;padding:12px;font-size:13px;line-height:1.7;resize:vertical;outline:none;background:#fdfcfb}
.assignment-item textarea:focus{border-color:#d9c8c2;background:#fff;box-shadow:0 0 0 3px #fbf2f0}
.assignment-foot{display:flex;align-items:center;justify-content:space-between;margin-top:10px}
.assignment-state{font-size:11.5px;color:var(--muted)}
.assignment-state.ok{color:var(--green)}
.assignment-state.pending{color:var(--amber)}

/* ---------- products ---------- */
.products-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:20px;flex-wrap:wrap}
.filter-tabs{display:flex;gap:4px;flex-wrap:wrap}
.filter-tab{padding:7px 13px;border-radius:8px;font-size:12.5px;color:var(--muted);border:1px solid transparent}
.filter-tab:hover{background:#f2eeea;color:var(--ink)}
.filter-tab.active{background:#fff;border-color:var(--line);color:var(--ink);font-weight:600;box-shadow:var(--shadow)}
.product-search{width:250px}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(236px,1fr));gap:18px}
.product-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;transition:transform .18s,box-shadow .18s;cursor:pointer;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-2px);box-shadow:0 18px 34px -24px rgba(50,35,25,.45);border-color:#ded5ce}
.product-media{aspect-ratio:4/3;background:#f4f1ee;overflow:hidden;position:relative}
.product-media img{width:100%;height:100%;object-fit:cover;display:block}
.product-body{padding:14px 16px 16px;flex:1;display:flex;flex-direction:column}
.product-series{font-size:10.5px;letter-spacing:.08em;color:var(--faint);text-transform:uppercase}
.product-name{font-size:14px;font-weight:650;margin:5px 0 6px}
.product-desc{font-size:11.5px;color:var(--muted);line-height:1.7;flex:1}
.product-foot{display:flex;align-items:center;justify-content:space-between;margin-top:12px;padding-top:10px;border-top:1px solid var(--line-soft);font-size:11px;color:var(--faint)}
.product-arrow{width:22px;height:22px;border-radius:50%;background:#f7f3ef;display:flex;align-items:center;justify-content:center;color:var(--ink-2)}
.product-arrow svg{width:12px;height:12px}
.empty-state{padding:60px 20px;text-align:center;color:var(--muted);font-size:13px}

/* product drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(28,24,20,.32);opacity:0;pointer-events:none;transition:opacity .2s;z-index:60}
.drawer-mask.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:440px;max-width:92vw;background:#fff;z-index:61;box-shadow:-24px 0 60px -30px rgba(0,0,0,.4);transform:translateX(102%);transition:transform .26s cubic-bezier(.4,.1,.2,1);display:flex;flex-direction:column}
.drawer.show{transform:none}
.drawer-head{display:flex;align-items:flex-start;justify-content:space-between;padding:22px 24px 16px;border-bottom:1px solid var(--line-soft)}
.drawer-title{font-size:18px;font-weight:650}
.drawer-body{padding:20px 24px 30px;overflow-y:auto}
.drawer-media{border-radius:10px;overflow:hidden;aspect-ratio:4/3;background:#f4f1ee;margin-bottom:16px}
.drawer-media img{width:100%;height:100%;object-fit:cover}
.drawer-specs{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:14px 0}
.drawer-specs div{display:flex;border-bottom:1px solid var(--line-soft);font-size:12.5px}
.drawer-specs div:last-child{border-bottom:0}
.drawer-specs dt{width:92px;flex:0 0 92px;padding:9px 12px;background:#faf8f6;color:var(--muted)}
.drawer-specs dd{margin:0;padding:9px 12px;color:var(--ink-2);line-height:1.6}
.drawer h4{font-size:12.5px;margin:18px 0 8px}
.drawer p{font-size:12.5px;color:var(--ink-2);line-height:1.8}
.tag-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.tag{font-size:11px;background:#f6f2ee;color:var(--ink-2);border-radius:6px;padding:4px 8px}

/* ---------- exam ---------- */
.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:22px;align-items:start}
.exam-list{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.exam-list-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line-soft);font-size:12px;color:var(--muted)}
.exam-row{display:flex;align-items:center;gap:14px;padding:15px 18px;border-bottom:1px solid var(--line-soft);cursor:pointer;transition:background .14s}
.exam-row:last-child{border-bottom:0}
.exam-row:hover{background:#fbf9f7}
.exam-row.active{background:var(--brand-tint)}
.exam-row .chapter-ico{width:30px;height:30px;border-radius:8px;background:#f4f0ec;display:flex;align-items:center;justify-content:center;color:var(--muted);flex:0 0 30px}
.exam-row.active .chapter-ico{background:#fff;color:var(--brand)}
.exam-row .chapter-ico svg{width:15px;height:15px}
.exam-row-main{flex:1;min-width:0}
.exam-row-title{font-size:13px;font-weight:600;display:flex;gap:8px;align-items:baseline}
.exam-row-title .no{font-size:11px;color:var(--faint);font-weight:500}
.exam-row-sub{font-size:11.5px;color:var(--muted);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.exam-state{font-size:11.5px;color:var(--muted);display:flex;align-items:center;gap:5px;white-space:nowrap}
.exam-state.locked{color:var(--faint)}
.exam-state.open{color:var(--brand);font-weight:600}
.exam-state.passed{color:var(--green);font-weight:600}
.exam-state .dot{width:5px;height:5px;border-radius:50%;background:currentColor}
.exam-detail{position:sticky;top:0;background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:var(--shadow)}
.exam-detail .detail-top{display:flex;align-items:center;justify-content:space-between;font-size:11.5px;color:var(--muted)}
.exam-detail h2{font-size:21px;font-weight:650;line-height:1.35;margin:10px 0 6px}
.exam-detail .desc{font-size:12.5px;color:var(--muted);line-height:1.75}
.exam-facts{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line-soft);border:1px solid var(--line-soft);border-radius:10px;overflow:hidden;margin:20px 0}
.exam-facts div{background:#fff;padding:12px 14px}
.exam-facts span{display:block;font-size:11px;color:var(--muted);margin-bottom:4px}
.exam-facts strong{font-size:15px;font-weight:650}
.exam-tip{font-size:11.5px;color:var(--muted);line-height:1.75;margin:14px 0 18px}
.exam-history{margin-top:18px;border-top:1px solid var(--line-soft);padding-top:14px}
.exam-history h4{font-size:12px;margin-bottom:8px}
.history-row{display:flex;justify-content:space-between;font-size:11.5px;color:var(--muted);padding:5px 0}
.history-row b{color:var(--ink);font-weight:600}

/* quiz full screen */
.quiz{max-width:840px;margin:0 auto;padding:28px 30px 80px}
.quiz-head{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-bottom:16px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:5}
.quiz-title{font-size:17px;font-weight:650}
.quiz-title span{display:block;font-size:11.5px;color:var(--muted);font-weight:400;margin-top:3px}
.quiz-timer{font-size:13px;color:var(--ink-2);display:flex;align-items:center;gap:7px;font-variant-numeric:tabular-nums}
.quiz-timer svg{width:15px;height:15px;color:var(--brand)}
.quiz-progress{height:4px;background:#eae4df;border-radius:3px;margin:18px 0 26px;overflow:hidden}
.quiz-progress span{display:block;height:100%;background:var(--brand);border-radius:3px;transition:width .2s}
.question{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 26px;margin-bottom:16px;box-shadow:var(--shadow)}
.q-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px}
.q-no{font-size:11px;color:var(--faint);font-variant-numeric:tabular-nums;padding-top:3px;flex:0 0 26px}
.q-text{font-size:14.5px;font-weight:600;line-height:1.65}
.q-type{font-size:10.5px;color:var(--muted);background:#f5f1ed;border-radius:5px;padding:2px 7px;margin-left:8px;font-weight:500;white-space:nowrap}
.q-options{display:flex;flex-direction:column;gap:8px;margin-left:38px}
.q-option{display:flex;align-items:flex-start;gap:10px;padding:11px 14px;border:1px solid var(--line);border-radius:9px;font-size:13px;color:var(--ink-2);cursor:pointer;transition:all .13s;line-height:1.6}
.q-option:hover{border-color:#d9c8c2;background:#fdfbf9}
.q-option input{display:none}
.q-key{flex:0 0 20px;height:20px;border-radius:5px;border:1px solid #dcd4cd;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--muted);margin-top:1px}
.q-option.sel{border-color:#d9b3b2;background:#fdf4f3;color:var(--ink)}
.q-option.sel .q-key{background:var(--brand);border-color:var(--brand);color:#fff}
.q-option.correct{border-color:#a9cfbc;background:var(--green-soft)}
.q-option.correct .q-key{background:var(--green);border-color:var(--green);color:#fff}
.q-option.wrong{border-color:#e2b4b0;background:#fdf1f0}
.q-option.wrong .q-key{background:#c0392b;border-color:#c0392b;color:#fff}
.q-explain{margin:14px 0 0 38px;font-size:12px;color:var(--muted);background:#faf8f5;border-radius:8px;padding:11px 13px;line-height:1.7;display:none}
.q-explain.show{display:block}
.q-explain b{color:var(--ink)}
.quiz-foot{display:flex;align-items:center;justify-content:space-between;margin-top:24px}
.quiz-foot .meta{font-size:11.5px;color:var(--muted)}

.result{max-width:680px;margin:50px auto;text-align:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:40px 40px 34px;box-shadow:var(--shadow)}
.result-ring{width:132px;height:132px;margin:0 auto 18px;position:relative}
.result-ring svg{transform:rotate(-90deg)}
.result-ring .ring-text{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.result-ring b{font-size:34px;font-weight:700;letter-spacing:-.02em}
.result-ring span{font-size:11px;color:var(--muted)}
.result h2{font-size:22px;font-weight:650;margin-bottom:6px}
.result p{color:var(--muted);font-size:13px}
.result-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:26px 0;text-align:center}
.result-stats div{background:#faf8f5;border-radius:10px;padding:12px}
.result-stats b{display:block;font-size:17px;font-weight:650}
.result-stats span{font-size:11px;color:var(--muted)}
.result-actions{display:flex;gap:10px;justify-content:center}

/* ---------- score ---------- */
.score-hero{background:linear-gradient(120deg,#201d1a,#3a2f29 60%,#5b3b31);border-radius:16px;padding:28px 30px;color:#fff;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:center;margin-bottom:20px;position:relative;overflow:hidden}
.score-hero::after{content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(181,18,27,.5),transparent 68%)}
.score-hero h2{font-size:20px;font-weight:650;letter-spacing:.01em}
.score-hero p{font-size:12.5px;color:#cfc5bd;margin-top:6px;max-width:560px;line-height:1.8}
.score-big{display:flex;align-items:baseline;gap:6px;position:relative;z-index:1}
.score-big b{font-size:52px;font-weight:700;letter-spacing:-.03em;line-height:1}
.score-big span{font-size:12px;color:#bdb0a6}
.level-pill{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:4px 11px;font-size:11.5px;margin-top:12px;color:#efe6df}
.level-pill svg{width:13px;height:13px;flex:0 0 13px}
.en-block .en-label svg{width:13px;height:13px;flex:0 0 13px}
.takeaways h3 svg{width:14px;height:14px;flex:0 0 14px;color:#b08b6c}
.score-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.kpi span{font-size:11.5px;color:var(--muted);display:flex;align-items:center;gap:6px}
.kpi span svg{width:14px;height:14px;flex:0 0 14px;color:#a58b76}
.kpi b{font-size:24px;font-weight:650;display:block;margin-top:6px;letter-spacing:-.02em}
.kpi b small{font-size:12px;color:var(--muted);font-weight:500}
.kpi .kpi-foot{font-size:11px;color:var(--faint);margin-top:4px}
.score-cols{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 22px}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.panel-head h3{font-size:14px;font-weight:650}
.panel-head span{font-size:11.5px;color:var(--muted)}
.radar-wrap{display:grid;grid-template-columns:300px minmax(0,1fr);gap:18px;align-items:center}
.radar-wrap svg{width:100%;height:auto}
.dim-row{margin-bottom:14px}
.dim-row:last-child{margin-bottom:0}
.dim-top{display:flex;justify-content:space-between;font-size:12px;margin-bottom:6px;color:var(--ink-2)}
.dim-top b{font-weight:600;color:var(--ink)}
.dim-bar{height:6px;background:#f1ece7;border-radius:4px;overflow:hidden}
.dim-bar span{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,#c23a34,#b5121b)}
.score-list{display:flex;flex-direction:column}
.score-list-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid var(--line-soft);font-size:12.5px}
.score-list-row:last-child{border-bottom:0}
.score-list-row .ico{width:26px;height:26px;border-radius:7px;background:#f7f3ef;display:flex;align-items:center;justify-content:center;color:var(--ink-2);flex:0 0 26px}
.score-list-row .ico svg{width:14px;height:14px}
.score-list-row .txt{flex:1;color:var(--ink-2)}
.score-list-row .val{font-size:11.5px;color:var(--muted);white-space:nowrap}
.award-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.award{border:1px dashed #e0d8d1;border-radius:10px;padding:12px;text-align:center;font-size:11px;color:var(--faint);line-height:1.5}
.award.on{border-style:solid;border-color:#f0dccf;background:#fdf8f3;color:#8a6549}
.award .medal{width:30px;height:30px;border-radius:50%;background:#f1e9e1;margin:0 auto 7px;display:flex;align-items:center;justify-content:center;color:#b08b6c}
.award.on .medal{background:#f6e3d5;color:#a2643a}
.award .medal svg{width:15px;height:15px}
.award b{display:block;font-size:11.5px;color:var(--ink-2);margin-bottom:2px}

/* ---------- daily ---------- */
.week-strip{display:flex;gap:8px;margin-bottom:18px;overflow-x:auto;padding-bottom:2px}
.day-card{flex:1;min-width:118px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:11px 12px;cursor:pointer;transition:all .15s;position:relative}
.day-card:hover{border-color:#ddcfc7}
.day-card.active{border-color:#d9b3b2;background:var(--brand-tint);box-shadow:0 0 0 3px #fbf0ef}
.day-card .dow{font-size:11.5px;color:var(--muted);display:flex;justify-content:space-between}
.day-card .dow em{font-style:normal;color:var(--faint);font-size:10.5px}
.day-card .date{font-size:13px;font-weight:600;margin:2px 0 3px}
.day-card .st{font-size:10.5px;color:var(--faint)}
.day-card .st.done{color:var(--green)}
.day-card .st.miss{color:#b98d8a}
.daily-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}
.daily-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 28px 28px}
.daily-card .head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:10px}
.daily-card h2{font-size:18px;font-weight:650}
.daily-card .sub{font-size:11.5px;color:var(--muted);margin-top:4px}
.save-state{font-size:11px;color:var(--green);display:flex;align-items:center;gap:5px}
.save-state .dot{width:5px;height:5px;border-radius:50%;background:currentColor}
.report-field{padding:20px 0;border-top:1px solid var(--line-soft)}
.report-field:first-of-type{border-top:0;padding-top:8px}
.report-label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;margin-bottom:4px}
.req{font-size:10.5px;color:var(--brand);background:var(--brand-soft);border-radius:4px;padding:1px 6px;font-weight:600}
.optional{font-size:10.5px;color:var(--muted);background:#f4f0ec;border-radius:4px;padding:1px 6px;font-weight:500}
.report-hint{font-size:11.5px;color:var(--muted);margin-bottom:9px}
.report-field textarea{width:100%;min-height:96px;border:1px solid var(--line);border-radius:9px;background:#fdfcfb;padding:12px 13px;font-size:13px;line-height:1.75;resize:vertical;outline:none;transition:all .15s}
.report-field textarea:focus{border-color:#d9c2bd;background:#fff;box-shadow:0 0 0 3px #fbf2f0}
.counter{text-align:right;font-size:10.5px;color:var(--faint);margin-top:4px;font-variant-numeric:tabular-nums}
.daily-side .panel{margin-bottom:14px}
.prompt-list{display:flex;flex-direction:column;gap:10px}
.prompt{font-size:12px;color:var(--ink-2);line-height:1.75;padding-left:16px;position:relative}
.prompt::before{content:"";position:absolute;left:3px;top:.72em;width:5px;height:5px;border-radius:50%;background:#d9c2b7}
.daily-side p{font-size:11.5px;color:var(--muted);line-height:1.8}
.daily-side h4{font-size:12.5px;font-weight:650;margin-bottom:9px}

/* ---------- notices ---------- */
.notice-list{display:flex;flex-direction:column;gap:10px;max-width:900px}
.notice{background:#fff;border:1px solid var(--line);border-radius:11px;padding:16px 20px;display:flex;gap:14px;cursor:pointer;transition:all .15s}
.notice:hover{border-color:#ded4cc}
.notice.unread{background:#fffdfc;border-color:#efded7}
.notice-ico{width:34px;height:34px;border-radius:9px;background:#f6f1ed;display:flex;align-items:center;justify-content:center;color:#9a7b62;flex:0 0 34px}
.notice-ico svg{width:16px;height:16px}
.notice-main{flex:1;min-width:0}
.notice-title{font-size:13.5px;font-weight:600;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.notice-title .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
.notice-sum{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.7}
.notice-body{display:none;font-size:12.5px;color:var(--ink-2);line-height:1.85;margin-top:10px;border-top:1px solid var(--line-soft);padding-top:10px}
.notice.open .notice-body{display:block}
.notice-date{font-size:11px;color:var(--faint);white-space:nowrap}
.notice-hint{display:flex;align-items:center;gap:8px;max-width:900px;margin:0 0 14px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:#fbf7f4;font-size:12px;color:var(--muted)}
.notice-hint svg{width:14px;height:14px;color:#9a7b62;flex:0 0 14px}
.notice-hint b{color:var(--ink);font-weight:600}
.notice-meta{display:flex;align-items:center;gap:14px;margin-top:9px;font-size:11px;color:var(--faint)}
.notice-meta span{white-space:nowrap}
.link-btn{background:none;border:0;padding:0;font-size:11px;color:var(--brand);cursor:pointer;text-decoration:underline;text-underline-offset:2px}
.link-btn:hover{color:var(--brand-deep)}
.link-btn:disabled{color:var(--faint);cursor:default}

/* ---------- toast ---------- */
.toast-wrap{position:fixed;right:24px;bottom:24px;display:flex;flex-direction:column;gap:8px;z-index:100}
.toast{background:#241f1c;color:#fff;font-size:12.5px;padding:10px 16px;border-radius:9px;box-shadow:0 14px 30px -14px rgba(0,0,0,.6);display:flex;align-items:center;gap:8px;animation:toastIn .24s ease}
.toast svg{width:14px;height:14px;color:#8fd0ad}
@keyframes toastIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .lesson-wrap{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  .score-grid{grid-template-columns:repeat(2,1fr)}
  .radar-wrap{grid-template-columns:240px minmax(0,1fr)}
}
@media (max-width:1080px){
  .sidebar{width:76px;flex-basis:76px}
  .brand{padding:20px 0 0;justify-content:center;align-items:center}
  .brand-logo{height:30px}
  .brand-title,.nav-item span:not(.nav-icon):not(.nav-badge),.user-meta,.user-actions{display:none}
  .nav-item{justify-content:center;padding:11px}
  .nav-sub{display:none!important}
  .nav-caret{display:none}
  .sidebar-foot .user{justify-content:center;padding:8px 0}
  .training{grid-template-columns:250px minmax(0,1fr)}
  .exam-layout{grid-template-columns:1fr}
  .exam-detail{position:static}
  .daily-layout{grid-template-columns:1fr}
  .score-cols{grid-template-columns:1fr}
}
@media (max-width:860px){
  .training{grid-template-columns:1fr;height:auto;overflow:visible}
  .syllabus{max-height:340px;border-right:0;border-bottom:1px solid var(--line)}
  .lesson-body{overflow:visible}
  .view{overflow-y:auto}
  .lesson-wrap{padding:24px 20px 60px}
  .topbar{padding:0 16px}
  .progress-track{width:90px}
  .topbar-left #deadline{display:none}
  .page{padding:22px 18px 50px}
  .score-hero{grid-template-columns:1fr}
  .score-grid{grid-template-columns:repeat(2,1fr)}
  .product-search{width:100%}
}

/* ---------- v2 additions ---------- */
.state-dot{width:7px;height:7px;border-radius:50%;border:1.4px solid #d4cbc3;display:block}
.lesson-state{justify-content:center;align-items:center}
.lesson-state svg{width:15px;height:15px}
.table-scroll{overflow-x:auto;margin:6px 0 18px;border-radius:10px}
.table-scroll .article-table{margin:0;min-width:520px}
.article-content h2{scroll-margin-top:12px}
.lesson-action-btns{display:flex;align-items:center;gap:8px}
.exam-cta{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:20px 0 0;padding:16px 18px;border:1px solid #efe1d8;background:linear-gradient(120deg,#fdf8f3,#fbf3ee);border-radius:12px}
.exam-cta-main{display:flex;align-items:center;gap:13px;min-width:0}
.exam-cta-icon{width:36px;height:36px;border-radius:9px;background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 36px;border:1px solid #f1e2d8}
.exam-cta-icon svg{width:17px;height:17px}
.exam-cta b{display:block;font-size:13px;color:var(--ink);margin-bottom:3px}
.exam-cta span{font-size:11.5px;color:var(--muted);line-height:1.6;display:block}
.exam-cta .btn svg{width:14px;height:14px}
.assignment-heading{padding:6px 0 18px;border-bottom:1px solid var(--line-soft);margin-bottom:18px}
.assignment-heading h2{font-size:21px;font-weight:650;margin:6px 0 6px}
.assignment-heading p{font-size:12.5px;color:var(--muted);line-height:1.8}
.assignment-tip{display:flex;gap:9px;align-items:flex-start;font-size:11.5px;color:var(--muted);line-height:1.7;margin-top:20px;padding:12px 14px;background:#faf8f5;border-radius:9px}
.assignment-tip svg{width:15px;height:15px;flex:0 0 15px;margin-top:2px;color:#b08b6c}
.exam-head-stats{display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.exam-head-stats .chip svg{width:12px;height:12px}
.exam-best-line{display:flex;align-items:center;gap:8px;font-size:11.5px;border-radius:8px;padding:9px 11px;margin:0 0 14px;line-height:1.6}
.exam-best-line svg{width:15px;height:15px;flex:0 0 15px}
.exam-best-line.ok{background:var(--green-soft);color:var(--green)}
.exam-best-line.warn{background:var(--amber-soft);color:var(--amber)}
.exam-start{width:100%;height:42px}
.exam-start svg{width:15px;height:15px}
.exam-tip{display:flex;gap:7px;align-items:flex-start}
.exam-tip svg{width:13px;height:13px;flex:0 0 13px;margin-top:3px;color:var(--faint)}
.q-type.ok{background:var(--green-soft);color:var(--green)}
.q-type.bad{background:#fdf1f0;color:#b23b32}
.review-wrap{max-width:840px;margin:0 auto 80px;padding:0 30px}
.review-head{display:flex;align-items:baseline;justify-content:space-between;margin:10px 0 14px}
.review-head h3{font-size:15px;font-weight:650}
.review-head span{font-size:11.5px;color:var(--muted)}
.review-q .q-option{cursor:default}
.review-q{margin-bottom:14px;box-shadow:none}
.review-q .q-explain{margin-left:38px}
.result-ring .ring-text b{color:var(--ink)}
.panel-scroll{max-height:420px;overflow-y:auto;padding-right:4px}
.panel-scroll::-webkit-scrollbar{width:6px}
.panel-scroll::-webkit-scrollbar-thumb{background:#e2dad3;border-radius:6px}
.score-list-row .val.ok{color:var(--green);font-weight:600}
.advice-list{display:flex;flex-direction:column}
.advice-item{display:flex;align-items:center;gap:11px;padding:12px 0;border-bottom:1px solid var(--line-soft)}
.advice-item:last-child{border-bottom:0}
.advice-item > svg{width:17px;height:17px;color:var(--brand);flex:0 0 17px}
.advice-item > div{flex:1;min-width:0}
.advice-item b{display:block;font-size:12.5px;font-weight:600;color:var(--ink)}
.advice-item span{display:block;font-size:11px;color:var(--muted);line-height:1.6;margin-top:2px}
.advice-item .btn{height:28px;font-size:11px;padding:0 10px}
.daily-stat-row{display:flex;align-items:center;gap:9px;padding:9px 0;border-bottom:1px solid var(--line-soft);font-size:12px;color:var(--ink-2)}
.daily-stat-row:last-child{border-bottom:0}
.daily-stat-row svg{width:15px;height:15px;color:#a58b76;flex:0 0 15px}
.daily-stat-row span{flex:1}
.daily-stat-row b{font-size:12.5px;font-weight:650;color:var(--ink)}
.daily-quote{display:flex;gap:9px;align-items:flex-start;background:#fbf7f2;border-color:#f0e4d9}
.daily-quote svg{width:16px;height:16px;color:#b08b6c;flex:0 0 16px;margin-top:2px}
.daily-quote p{font-size:11.5px;color:#7d6757;line-height:1.8;font-style:italic}
.drawer-points{display:flex;flex-direction:column;gap:8px;margin:0 0 4px}
.drawer-points li{display:flex;gap:8px;font-size:12.5px;color:var(--ink-2);line-height:1.65;align-items:flex-start}
.drawer-points li svg{width:14px;height:14px;flex:0 0 14px;color:var(--green);margin-top:3px}
.drawer-note{display:flex;gap:8px;align-items:flex-start;margin:20px 0 14px;padding:11px 13px;border-radius:9px;background:#faf8f5;font-size:11.5px;color:var(--muted);line-height:1.7}
.drawer-note svg{width:14px;height:14px;flex:0 0 14px;margin-top:2px;color:#b08b6c}
.drawer-btn{width:100%;margin-top:4px}
.notice-title .chip{height:20px;font-size:10px;padding:0 7px;font-weight:500}
.notice.open{background:#fff}
.product-grid .empty-state{grid-column:1/-1}
@media (max-width:1080px){
  .exam-head-stats{flex-direction:row}
  .panel-scroll{max-height:none}
}
@media (max-width:860px){
  .exam-cta{flex-direction:column;align-items:stretch}
  .exam-cta .btn{width:100%}
  .lesson-actions{flex-direction:column;align-items:stretch;gap:10px}
  .lesson-action-btns{justify-content:flex-end}
  .review-wrap{padding:0 18px}
  .radar-wrap{grid-template-columns:1fr}
}