:root{--brand:#dc2626;--brand2:#ef4444;--brand-soft:#fef2f2;--brand-soft-2:#fff7f7;--brand-rgb:220,38,38;--ink:#202534;--muted:#72798a;--line:#e8eaf0;--soft:#f6f7fa;--green:#20a36b;--blue:#3678f6;--gold:#f4a62a;--navy:#131927;--shadow:0 10px 30px rgba(30,40,70,.08);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--soft)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:var(--soft)}body::after{content:"";display:block;height:76px}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}.container{width:min(1200px,calc(100% - 32px));margin:auto}.topbar{height:34px;background:#f7f7f8;border-bottom:1px solid #eee;font-size:12px;color:#6b6f7b}.topbar .container,.header-main .container,.nav-main 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var(--line);padding:14px 0}.exam-menu h3{padding:0 18px;margin:7px 0 12px;font-size:16px}.exam-group{padding:10px 18px;border-top:1px solid #f3f3f4}.exam-group:first-of-type{border:0}.exam-group strong{font-size:14px}.exam-group div{display:flex;flex-wrap:wrap;gap:7px 13px;margin-top:7px}.exam-group a{color:#777;font-size:12px}.exam-group a:hover{color:var(--brand)}.hero-banner{background:linear-gradient(120deg,#fff5ee 0,#ffe5d5 50%,#fff 100%);padding:42px 44px;position:relative;overflow:hidden}.hero-banner:after{content:"";position:absolute;width:310px;height:310px;border-radius:50%;background:radial-gradient(circle,#ffb18e 0,#ffcfb9 42%,transparent 43%);right:-70px;bottom:-110px;opacity:.65}.hero-banner h1{font-size:38px;line-height:1.25;margin:14px 0}.hero-banner 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p{font-size:13px;color:var(--muted);line-height:1.6;min-height:42px;max-height:64px;overflow:auto}.course-meta{display:flex;gap:12px;color:#999;font-size:12px}.course-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:16px}.price{color:var(--brand);font-size:20px;font-weight:800}.detail-hero{display:grid;grid-template-columns:480px 1fr;gap:30px;padding:28px}.detail-cover{height:290px;border-radius:10px;background:linear-gradient(140deg,var(--brand2),var(--brand));color:#fff;padding:38px;position:relative;overflow:hidden}.detail-cover:after{content:"职称通关";position:absolute;right:-12px;bottom:15px;font-size:70px;font-weight:900;opacity:.12;transform:rotate(-10deg)}.detail-cover h1{font-size:29px;line-height:1.45;margin-top:58px}.detail-info h1{font-size:25px;margin:6px 0 14px}.detail-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}.detail-facts div{background:var(--soft);padding:12px;text-align:center;border-radius:7px}.detail-facts b{display:block;margin-bottom:3px}.price-line{background:var(--brand-soft-2);padding:14px 18px;margin:18px 0;color:#777}.price-line strong{font-size:28px;color:var(--brand);margin-left:15px}.lesson-list{list-style:none;margin:0;padding:0}.lesson-list li{display:grid;grid-template-columns:36px 1fr auto;align-items:center;gap:12px;padding:15px 6px;border-top:1px solid var(--line)}.lesson-list li:first-child{border:0}.lesson-no{width:28px;height:28px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-size:12px}.teacher-row{display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--line)}.teacher-face{width:64px;height:64px;border-radius:50%;background:linear-gradient(145deg,#ffd6ca,#ff8866);flex:0 0 auto;display:grid;place-items:center;color:#fff;font-weight:800}.teacher-row h3{margin:4px 0}.teacher-row p{margin:5px 0;color:var(--muted);font-size:13px}.learning-top{display:flex;align-items:center;justify-content:space-between;padding:14px 18px}.learning-top h1{font-size:16px;margin:0}.player-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px}.player-layout>*{min-width:0}.player{position:relative;display:grid;place-items:center;background:radial-gradient(circle at center,#252d42,#0c1019 70%);height:560px;border-radius:10px}.play-button{width:82px;height:82px;border-radius:50%;border:2px solid rgba(255,255,255,.8);display:grid;place-items:center;font-size:30px;background:rgba(255,255,255,.08)}.player-hint{position:absolute;bottom:70px;color:#cbd0db}.player-controls{position:absolute;left:20px;right:20px;bottom:20px;display:flex;align-items:center;gap:16px;font-size:12px}.player-progress{height:4px;background:#555d70;flex:1}.player-progress span{display:block;width:38%;height:100%;background:var(--brand)}.chapter-panel{background:#1a2131;padding:0 18px;overflow:auto}.chapter-panel h3{font-size:15px;padding:16px 0;margin:0;border-bottom:1px solid #323a4d}.chapter-item{display:flex;align-items:center;gap:8px;padding:11px 10px;border-bottom:1px solid var(--line);color:var(--ink);font-size:13px;cursor:pointer}.chapter-item.active,.chapter-item:hover{color:var(--brand);background:var(--brand-soft)}.chapter-item small{display:block;color:var(--muted);margin-top:5px}


.learning-tools{background:#fff;color:var(--ink);padding:20px;display:grid;grid-template-columns:1fr 310px;gap:20px}.info-tabs{display:flex;gap:24px;border-bottom:1px solid var(--line)}.info-tabs a{padding:10px 0;border-bottom:2px solid transparent}.info-tabs a.active{color:var(--brand);border-color:var(--brand)}.note-form textarea{width:100%;min-height:110px;border:1px solid var(--line);border-radius:8px;padding:12px;resize:vertical;outline:0}.note-form textarea:focus{border-color:var(--brand)}.note-item{padding:16px 0;border-bottom:1px solid var(--line)}.note-item header{display:flex;justify-content:space-between}.note-item p{color:#555;line-height:1.7}.note-type{font-size:12px;color:var(--brand)}.question-layout{display:grid;grid-template-columns:1fr 300px;gap:18px}.question-card{padding:28px}.question-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:16px}.question-title{font-size:18px;line-height:1.8;margin:25px 0}.option{border:1px solid var(--line);border-radius:8px;padding:13px 16px;margin:10px 0;display:flex;gap:10px;cursor:pointer}.option:hover,.option.selected{border-color:var(--brand);background:var(--brand-soft-2)}.option-key{width:24px;height:24px;border-radius:50%;border:1px solid #ccc;display:grid;place-items:center;flex:0 0 auto}.option.selected .option-key{background:var(--brand);border-color:var(--brand);color:#fff}.answer-box{background:#f5fbf8;border-left:3px solid var(--green);padding:16px;margin-top:18px;display:none}.answer-box.show{display:block}.question-actions{display:flex;justify-content:space-between;margin-top:25px}.answer-sheet{padding:20px;height:max-content}.answer-sheet h3{margin:0 0 16px}.answer-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.answer-grid button{border:1px solid var(--line);background:#fff;border-radius:4px;height:32px}.answer-grid button.current{border-color:var(--brand);color:var(--brand)}.answer-grid button.done{background:var(--brand-soft);border-color:#ffc7b6}.legend{display:flex;gap:13px;font-size:12px;color:#777;margin-top:18px}.timer{font-size:22px;font-weight:800;color:var(--brand)}.profile-hero{background:linear-gradient(120deg,#fff,var(--brand-soft-2));padding:28px;display:flex;align-items:center;gap:18px}.profile-hero .avatar{width:72px;height:72px;font-size:24px}.profile-hero h1{margin:0}.profile-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border-radius:10px;overflow:hidden}.profile-stats div{background:#fff;padding:18px;text-align:center}.profile-stats b{display:block;font-size:23px;margin-bottom:4px}.progress{height:7px;background:#eceef2;border-radius:4px;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2))}.list-card{display:grid;grid-template-columns:170px 1fr auto;gap:18px;align-items:center;padding:18px;border-top:1px solid var(--line)}.list-card:first-child{border:0}.mini-cover{height:94px;border-radius:8px;background:linear-gradient(135deg,var(--brand2),var(--brand));display:grid;place-items:center;color:#fff;font-weight:800}.list-card h3{margin:0 0 8px}.list-card p{margin:5px 0;color:var(--muted);font-size:13px}.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat-card{padding:20px}.stat-card b{display:block;font-size:28px;margin:7px 0}.stat-card small{color:var(--muted)}.record-row{display:grid;grid-template-columns:110px 1fr 140px 110px;gap:18px;align-items:center;padding:16px;border-top:1px solid var(--line)}.record-row:first-child{border:0}.cert-hero{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;padding:32px;display:grid;grid-template-columns:1fr 330px;gap:30px}.cert-number{font-size:44px;font-weight:900}.cert-panel{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.25);padding:22px;border-radius:10px}.stepper{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.step{position:relative;text-align:center;padding:18px}.step:after{content:"";position:absolute;top:31px;left:60%;right:-40%;height:2px;background:#ddd}.step:last-child:after{display:none}.step b{width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;margin:auto auto 9px}.member-card{padding:26px;background:linear-gradient(140deg,#292f3f,#121620);color:#f6dca3;border-radius:13px;min-height:190px;position:relative;overflow:hidden}.member-card:after{content:"VIP";position:absolute;right:-8px;bottom:-28px;font-size:110px;font-weight:900;opacity:.08}.level-track{display:grid;grid-template-columns:repeat(4,1fr);margin-top:20px}.level{position:relative;text-align:center}.level:before{content:"";position:absolute;top:14px;left:-50%;right:50%;height:4px;background:#e7e8eb}.level:first-child:before{display:none}.level i{position:relative;width:30px;height:30px;border-radius:50%;background:#ddd;display:grid;place-items:center;margin:auto;font-style:normal}.level.done i,.level.active i{background:var(--brand);color:#fff}.level.active i{box-shadow:0 0 0 6px var(--brand-soft)}.level span{display:block;margin-top:10px;font-size:13px}.blueprint-table{width:100%;border-collapse:collapse;font-size:13px}.blueprint-table th,.blueprint-table td{padding:12px;border:1px solid var(--line);text-align:left;vertical-align:top}.blueprint-table th{background:#f8f8fa}.blueprint-table code{color:#9e3d22}.status{display:inline-flex;padding:3px 8px;border-radius:10px;background:#eaf8f1;color:var(--green);font-size:12px}.footer{background:#252a35;color:#aeb4c2;padding:38px 0}.footer .container{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px}.footer h3,.footer h4{color:#fff;margin-top:0}.footer a{display:block;font-size:13px;margin:8px 0}.footer-bottom{background:#1d212a;color:#777;text-align:center;padding:13px;font-size:12px}.float-bar{position:fixed;right:18px;bottom:70px;z-index:15;background:#fff;border:1px solid var(--line);border-radius:9px;box-shadow:var(--shadow);overflow:hidden}.float-bar a{display:block;padding:11px;border-bottom:1px solid var(--line);font-size:12px;text-align:center}.toast{position:fixed;left:50%;bottom:36px;transform:translate(-50%,20px);opacity:0;background:#202532;color:#fff;padding:11px 20px;border-radius:6px;z-index:100;transition:.25s}.toast.show{opacity:1;transform:translate(-50%,0)}.spacer{height:18px}.mobile-only{display:none}@media(max-width:1000px){.search{width:330px}.hero{grid-template-columns:220px 1fr}.hero-side{display:none}.grid-4{grid-template-columns:repeat(2,1fr)}.detail-hero{grid-template-columns:360px 1fr}.player-layout{grid-template-columns:1fr 290px}.learning-tools{grid-template-columns:1fr}.question-layout{grid-template-columns:1fr 270px}.footer .container{grid-template-columns:2fr 1fr 1fr}}@media(max-width:760px){.container{width:min(100% - 22px,1200px)}.topbar,.search,.user-entry{display:none}.header-main{height:64px}.brand-mark{width:38px;height:38px}.brand strong{font-size:19px}.brand small{display:none}.nav-main{overflow:auto}.nav-links{gap:4px}.nav-links a{font-size:13px;white-space:nowrap}.page{padding-top:14px}.hero{grid-template-columns:1fr;min-height:auto}.exam-menu{display:none}.hero-banner{padding:30px 22px}.hero-banner h1{font-size:28px}.hero-points{flex-wrap:wrap;gap:10px}.grid-2,.grid-3,.grid-4,.stat-cards{grid-template-columns:1fr}.two-col{grid-template-columns:1fr}.side-nav{display:flex;overflow:auto;padding:0}.side-nav h3{display:none}.side-nav a{white-space:nowrap}.detail-hero{grid-template-columns:1fr;padding:16px}.detail-cover{height:220px}.player-layout{grid-template-columns:1fr}.player{min-height:390px}.chapter-panel{max-height:320px}.learning-tools{grid-template-columns:1fr}.question-layout{grid-template-columns:1fr}.question-card{padding:18px}.answer-sheet{order:-1}.profile-stats{grid-template-columns:repeat(2,1fr)}.list-card,.record-row{grid-template-columns:1fr}.mini-cover{height:130px}.cert-hero{grid-template-columns:1fr}.stepper{grid-template-columns:1fr}.step:after{display:none}.footer .container{grid-template-columns:1fr 1fr}.float-bar{display:none}.mobile-only{display:block}.section-head{align-items:flex-start}.section-head h2{font-size:21px}.blueprint-table{display:block;overflow:auto}.level-track{font-size:11px}}
.hero-banner{background:linear-gradient(120deg,var(--brand-soft-2),var(--brand-soft),#fff)}.hero-banner:after{background:radial-gradient(circle,rgba(var(--brand-rgb),.28) 0,rgba(var(--brand-rgb),.12) 42%,transparent 43%)}.hero-banner p,.hero-points{color:var(--muted)}.avatar,.teacher-face{background:linear-gradient(145deg,var(--brand-soft),var(--brand2))}.answer-grid button.done{background:var(--brand-soft);border-color:rgba(var(--brand-rgb),.35)}
/* ===== 课程/章节评价与答疑群二维码（学员端展示位） ===== */
.review-summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:4px 0 14px;border-bottom:1px solid var(--line);margin-bottom:6px}
.avatar.sm{width:26px;height:26px;font-size:12px}
.section-foot{text-align:center;padding:10px 0 2px}
.qr-join{display:flex;gap:24px;align-items:center;padding:8px 0}
.qr-join h3{margin:0 0 8px}
.qr-mock{width:150px;height:150px;flex:none;border:10px solid #fff;box-shadow:0 0 0 1px var(--line),0 8px 20px rgba(30,40,70,.08);border-radius:6px;background:repeating-conic-gradient(#161a26 0 25%,#fff 0 50%) 0 0/26px 26px}

/* 学习提醒页 */
.msg-row{display:flex;align-items:center;gap:12px;padding:14px 0;border-top:1px dashed var(--line)}
.msg-row .msg-body{flex:1;min-width:0}
.msg-row .msg-body p{margin:4px 0 0;font-size:13px;color:var(--muted)}
.msg-side{display:flex;align-items:center;gap:10px;flex:none}
.msg-dot{width:8px;height:8px;border-radius:50%;background:transparent;flex:none}
.msg-row.unread .msg-dot{background:var(--brand)}
.msg-row.unread .msg-body strong{color:var(--brand)}
.switch-row{display:flex;align-items:center;gap:8px;padding:9px 0;font-size:14px}
.switch-row small{color:var(--muted)}
.setting-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px 32px}
.setting-grid h3{font-size:15px;margin:14px 0 4px}
.setting-grid input[type="time"],.setting-grid select{border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:#fff}

/* 三级结构与套餐 / 讲义联动 / 笔记浮窗 / 星级评价 */
.subject-chip{color:var(--brand)}

.handout-panel .seg{padding:10px 12px;border-left:3px solid var(--line);margin-bottom:6px;cursor:pointer;border-radius:0 8px 8px 0}
.handout-panel .seg.cur{border-color:var(--brand);background:var(--brand-soft-2)}
.handout-panel .seg small{color:var(--brand);font-size:11px}
.handout-panel .seg p{margin:3px 0;font-weight:600;font-size:13px}
.handout-panel .seg-c{display:none;font-size:12px;color:var(--muted);line-height:1.7;margin-top:4px}
.handout-panel .seg.cur .seg-c,.handout-panel.expand .seg-c{display:block}
.note-float{position:fixed;top:120px;left:110px;width:430px;background:#fff;border-radius:14px;box-shadow:0 18px 50px rgba(20,30,60,.28);z-index:90;overflow:hidden}
.nf-head{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:var(--navy);color:#fff;cursor:move;font-size:13px;user-select:none}
.nf-head button{background:none;border:0;color:#fff;font-size:17px}
.nf-tools{display:flex;gap:6px;padding:8px 12px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.nf-tools button{border:1px solid var(--line);background:#fff;border-radius:6px;padding:3px 10px;font-size:12px}
.note-float textarea{width:100%;min-height:150px;border:0;padding:12px;font-size:13px;font-family:inherit;outline:none}
.nf-foot{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-top:1px solid var(--line)}

/* 用户名与退出：置于头像旁（顶行已移除） */
.user-name{font-size:13px;font-weight:600;color:var(--ink,#1d2939);text-decoration:none}
.logout-link{font-size:12px;color:var(--muted,#98a2b3);text-decoration:none}
.logout-link:hover{color:var(--brand,#f15a37)}
.info-badge{position:relative;display:inline-block;margin-left:10px;padding:2px 10px;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;cursor:help;vertical-align:middle;white-space:nowrap}.info-pop{position:absolute;top:24px;left:50%;transform:translateX(-30%);min-width:300px;padding:10px 12px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);color:var(--ink);font-size:12px;font-weight:400;line-height:1.8;display:none;z-index:40;text-align:left;white-space:nowrap}.info-badge:hover .info-pop{display:block}.pkg-group{border:1px solid var(--line);border-radius:12px;padding:14px;margin-top:14px}.pkg-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}.pkg-head h3{margin:0;font-size:16px}
.user-menu{position:relative;display:flex;align-items:center}
.user-trigger{display:flex;align-items:center;gap:12px;cursor:pointer}
.user-pop{position:absolute;top:48px;right:0;min-width:170px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;display:none;z-index:60;flex-direction:column}
.user-menu.open .user-pop{display:flex}
.user-pop a{padding:9px 12px;border-radius:8px;font-size:13px;display:flex;gap:8px;white-space:nowrap}
.user-pop a:hover{background:var(--brand-soft);color:var(--brand)}
.md-img{display:inline-block;padding:2px 10px;border:1px dashed var(--line);border-radius:8px;background:var(--soft);font-size:12px;color:var(--muted)}
.note-item code{background:var(--soft);padding:1px 6px;border-radius:5px;font-size:12px}
.note-filter{display:flex;gap:8px;margin:12px 0 2px;flex-wrap:wrap}
.note-filter button{border:1px solid var(--line);background:#fff;border-radius:14px;padding:4px 14px;font-size:12px;color:var(--muted)}
.note-filter button.active{background:var(--brand);border-color:var(--brand);color:#fff}
.note-fab{position:fixed;right:26px;bottom:26px;z-index:80;display:flex;align-items:center;gap:8px;border:0;border-radius:24px;padding:12px 22px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:14px;font-weight:600;box-shadow:0 8px 22px rgba(var(--brand-rgb),.38);transition:transform .15s}
.note-fab:hover{transform:translateY(-2px)}
.note-fab span{font-size:12px;opacity:.85;font-weight:400}
.player-foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:2px 12px;padding:10px 4px;font-size:13px}
.side-catalog{padding:16px}
.mini-note{border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:12px;margin-top:8px}
.mini-note p{color:var(--ink)}
.side-col{display:flex;flex-direction:column}
.hd-flex{height:560px;overflow:auto}
.hd-flex .seg{flex:none}

/* 课程包详情 · 套餐（SKU）选中态 */
.sku-on{border-radius:10px;background:var(--soft)}

/* 全局配色悬浮按钮：避开页脚左侧文字，停靠在右侧快捷栏正上方 */
body .theme-picker{left:auto;right:18px;bottom:244px}
body .theme-panel{left:auto;right:0}
@media(max-width:760px){body .theme-picker{left:12px;right:auto;bottom:16px}body .theme-picker .theme-trigger{width:38px;height:38px;padding:0;border-radius:50%;font-size:0}body .theme-picker .theme-trigger:before{content:"◉";font-size:15px}}

/* ===== 学习中心 · 顶部导航栏右侧科目切换 ===== */
.nav-right{display:flex;align-items:center}
.subject-switch{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-shrink:0;padding-left:12px}
.subject-switch select{border:1px solid var(--line);border-radius:6px;padding:4px 8px;font-size:13px;background:#fff;color:var(--ink);max-width:150px}
@media(max-width:760px){.subject-switch-label{display:none}.subject-switch select{max-width:108px}}

/* ===== 购物车入口与角标 ===== */
.cart-entry{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--ink)}
.cart-entry:hover{color:var(--brand)}
.cart-badge{min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--brand);color:#fff;font-size:11px;display:grid;place-items:center}
.cart-foot{display:flex;align-items:center;justify-content:flex-end;gap:20px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.cart-empty{text-align:center;padding:40px 0}

/* ===== 套餐分组：单科 / 多科，多科套餐展开包含科目 ===== */
.sku-group-head{font-size:14px;margin:16px 0 4px}
.pkg-subs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:6px 0 10px 34px}
.pkg-subs small{color:var(--muted)}
.pkg-sub-item{border:1px solid var(--line);border-radius:14px;padding:3px 12px;font-size:12px;background:#fff}

/* ===== 同职称类型课程包：左右切换 ===== */
.cls-switch-nav{display:flex;gap:8px}
.cls-switch{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;scroll-behavior:smooth}
.cls-chip{flex:0 0 240px;border:1px solid var(--line);border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:6px;background:#fff}
.cls-chip:hover{border-color:var(--brand)}
.cls-chip.active{border-color:var(--brand);background:var(--brand-soft-2)}
.cls-chip b{font-size:13px}
.cls-chip small{color:var(--muted)}

/* ===== 当前课程章节：收起 / 展开 ===== */
.chapter-toggle{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer}
.chapter-toggle h2{margin:0}
.chapter-toggle .chevron{font-size:20px;color:var(--muted);transition:transform .25s}
.chapter-toggle.collapsed .chevron{transform:rotate(-90deg)}
.chapter-body{margin-top:14px}

/* ===== 免费 / 体验视频不计课时提示条 ===== */
.hours-banner{margin-top:12px;padding:10px 14px;border-radius:8px;background:#fff8e6;border:1px solid #ffe1a8;color:#ad6800;font-size:13px}

/* ===== 购课页左右结构：右栏价格区 / 套餐 chips 单选 / 大按钮购买条（参考 233 网校购课页） ===== */
.detail-hero{align-items:stretch}
.detail-hero .detail-cover{height:auto;min-height:290px}
.buy-price{display:flex;align-items:baseline;gap:12px;margin:14px 0 4px}
.buy-price .bp-label{color:var(--muted);font-size:13px}
.buy-price strong{font-size:34px;color:var(--brand);line-height:1}
.buy-price del{color:var(--muted);font-size:14px}
.sku-pick-area{margin:14px 0 4px}
.sku-pick-head{display:flex;align-items:baseline;gap:10px;margin-bottom:8px}
.sku-pick-head b{font-size:14px}
.sku-pick-head small{color:var(--muted);font-size:12px}
.sku-group-label{font-size:12px;color:var(--muted);margin:10px 0 6px}
.sku-chips{display:flex;flex-wrap:wrap;gap:10px}
.sku-chip{position:relative;border:1px solid var(--line);border-radius:10px;padding:10px 36px 10px 14px;background:#fff;cursor:pointer;min-width:170px}
.sku-chip b{display:block;font-size:14px;margin-bottom:4px}
.sku-chip small{color:var(--muted);font-size:12px}
.sku-chip .sku-price{color:var(--brand);font-weight:800;font-size:16px}
.sku-chip .sku-orig{color:var(--muted);font-size:11px;font-weight:400}
.sku-chip .sku-check{position:absolute;top:10px;right:10px;width:18px;height:18px;border-radius:50%;border:1px solid var(--line);color:transparent;display:grid;place-items:center;font-size:11px}
.sku-chip:hover{border-color:var(--brand)}
.sku-chip.sku-on{border-color:var(--brand);background:var(--brand-soft-2);box-shadow:0 0 0 1px var(--brand)}
.sku-chip.sku-on .sku-check{background:var(--brand);border-color:var(--brand);color:#fff}
.sku-subs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:10px}
.sku-subs small{color:var(--muted)}
.buy-bar{display:flex;gap:14px;align-items:stretch;margin-top:18px}
.btn-cart-lg{flex:1;border:2px solid var(--brand);border-radius:12px;background:#fff8ec;color:var(--brand);font-size:17px;font-weight:700;padding:15px 0;cursor:pointer}
.btn-cart-lg:hover{background:var(--brand-soft)}
.btn-buy-lg{flex:1.4;border:0;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:19px;font-weight:800;padding:15px 0;cursor:pointer;box-shadow:0 8px 22px rgba(var(--brand-rgb),.35)}
.btn-buy-lg:active,.btn-cart-lg:active{transform:translateY(1px)}
.buy-side{display:flex;flex-direction:column;justify-content:center;gap:8px;flex:none}
.buy-side a,.buy-side button{border:0;background:none;padding:0;font-size:12px;color:var(--muted);cursor:pointer;text-align:left}
.buy-side a:hover,.buy-side button:hover{color:var(--brand)}
@media(max-width:760px){.buy-bar{flex-direction:column}.buy-side{flex-direction:row}}

/* ===== 单科套餐 · 购买时自选科目 chips ===== */
.sub-chip{min-width:0;padding:8px 30px 8px 12px}
.sub-chip b{font-size:13px;margin:0}
.sub-chip .sku-check{top:50%;transform:translateY(-50%)}

.sku-subs[hidden]{display:none}

/* ===== 章/节 二级结构（与管理端章节管理一致；深浅背景均适配） ===== */
.chapter-group{margin-bottom:6px}
.chapter-head{display:flex;align-items:baseline;gap:10px;padding:12px 10px 6px}
.chapter-head b{font-size:14px}
.chapter-head small{color:var(--muted);font-size:12px}
.chapter-panel .chapter-head{color:#e8ebf3;border-bottom:1px solid #323a4d}
.chapter-panel .chapter-head small{color:#8b93a7}
.chapter-item.lesson-sub{padding-left:22px}
.lesson-sub-no{width:34px;flex:none;font-size:12px}
.chapter-group .lesson-no{width:auto;min-width:30px;padding:0 5px}

/* ===== 题库中心：章节练习聚合 / 每日一练 / 精选试题（参考 233 学习中心·我的题库） ===== */
.daily-banner{background:linear-gradient(120deg,var(--brand),var(--brand2));color:#fff;border-radius:12px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.daily-banner h3{margin:0 0 6px;font-size:18px}
.daily-banner p{margin:0;font-size:13px;opacity:.88}
.daily-dates{display:flex;gap:8px;margin:14px 0}
.daily-date{flex:1;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 0;text-align:center;cursor:pointer}
.daily-date b{display:block;font-size:13px}
.daily-date small{color:var(--muted);font-size:11px}
.daily-date.active{border-color:var(--brand);background:var(--brand-soft-2);color:var(--brand)}
.daily-date.active small{color:var(--brand)}
.daily-card{display:flex;align-items:center;gap:18px;background:var(--soft);border-radius:10px;padding:16px 18px}
.qpack-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.qpack-card{border:1px solid var(--line);border-radius:12px;padding:18px;display:flex;flex-direction:column;gap:8px}
.qpack-card h3{margin:0;font-size:16px}
.qpack-card .price{font-size:22px}
.qpack-foot{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:10px}
@media(max-width:760px){.qpack-grid{grid-template-columns:1fr}.daily-dates{flex-wrap:wrap}.daily-date{flex:0 0 30%}}

/* ===== 题库中心：功能入口横向排布（窄屏横向滚动） ===== */
.entry-strip{display:flex;gap:14px;overflow-x:auto;padding-bottom:6px}
.entry-card{flex:0 0 176px;min-height:150px}

/* ===== 笔记：科目 → 章节 二级分类 ===== */
.note-subj{display:flex;align-items:baseline;justify-content:space-between;padding:10px 10px 4px;font-size:13px}
.note-subj small{font-size:11px}
.chapter-item.note-ch{padding-left:22px}

/* ===== 题库中心：入口条即 tab 栏（就地切换面板，无刷新） ===== */
.entry-card{cursor:pointer}
.entry-card.active{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand);background:var(--brand-soft-2)}
.qtab-panel[hidden]{display:none}

/* ===== 题库中心：三层选择器（职称类型下拉 / 科目横条 / 分类图标条）+ 章节练习章收起 ===== */
.qb-type-row{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.qb-type-row label{font-size:13px;color:var(--muted);white-space:nowrap}
.qb-type-row select{border:1px solid var(--line);border-radius:8px;padding:7px 12px;font-size:14px;background:#fff;color:var(--ink);min-width:220px}
.qb-subs{display:flex;gap:4px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:16px}
.qb-sub{padding:10px 16px;font-size:14px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.qb-sub:hover{color:var(--brand)}
.qb-sub.active{color:var(--brand);border-color:var(--brand)}
.qb-chap{border-top:1px solid var(--line)}
.qb-chap:first-of-type{border-top:0}
.qb-chap-head{display:flex;align-items:center;gap:10px;padding:14px 6px;cursor:pointer}
.qb-chap-head b{font-size:15px}
.qb-chap-head .plus{width:22px;height:22px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--muted);font-size:14px;flex:none;transition:transform .2s}
.qb-chap-head.open .plus{transform:rotate(45deg);color:var(--brand);border-color:var(--brand)}
.qb-chap-head:hover b{color:var(--brand)}
.qb-chap-body{padding:0 6px 8px 32px}

/* ===== PDF 讲义：在线/PDF 格式切换 + 页码 ↔ 视频时间点联动 ===== */
.hf-switch{display:flex;gap:6px;margin:0 0 10px}
.hf-switch button{border:1px solid var(--line);background:#fff;border-radius:14px;padding:4px 14px;font-size:12px;color:var(--muted)}
.hf-switch button.active{background:var(--brand);border-color:var(--brand);color:#fff}
.pdf-pages{display:flex;gap:6px;align-items:center;margin-bottom:10px;flex-wrap:wrap}
.pdf-pg{width:32px;height:40px;border:1px solid var(--line);border-radius:6px;background:#fff;font-size:12px;color:var(--ink)}
.pdf-pg.cur{border-color:var(--brand);background:var(--brand-soft);color:var(--brand);font-weight:700;box-shadow:0 0 0 1px var(--brand)}
.pdf-row.cur{background:var(--brand-soft-2);border-radius:8px}
.pdf-page-card{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px;cursor:pointer;transition:border-color .15s,background .15s}
.pdf-page-card:hover{border-color:var(--brand)}
.pdf-page-card.cur{border-color:var(--brand);background:var(--brand-soft-2);box-shadow:0 0 0 1px var(--brand)}
.pdf-page-thumb{width:44px;height:56px;background:linear-gradient(135deg,#f0f4fa,#e4eaf4);border:1px solid var(--line);border-radius:6px;display:grid;place-items:center;flex-shrink:0}
.pdf-page-no{font-size:16px;font-weight:700;color:var(--brand)}
.pdf-page-card.cur .pdf-page-no{color:var(--brand)}
.pdf-page-info{flex:1;min-width:0}
.pdf-page-info strong{display:block;font-size:13px;margin-bottom:2px}
.pdf-page-info small{font-size:11px}

/* ===== 讲师悬停详情卡（管理端 + 学员端共用，2026-10 需求） ===== */
[data-teacher]{cursor:help;border-bottom:1px dashed var(--line)}
.teacher-card{position:fixed;z-index:9998;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.16);padding:14px 16px;width:280px;pointer-events:none}
.teacher-card[hidden]{display:none}
.teacher-card .tc-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.teacher-card .tc-head b{display:block;font-size:15px}
.teacher-card .tc-head small{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.teacher-card .tc-face{width:34px;height:34px;border-radius:8px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:700;flex:none}
.teacher-card .tc-row{display:flex;justify-content:space-between;font-size:13px;padding:6px 0;border-top:1px dashed var(--line)}
.teacher-card .tc-row span{color:var(--muted)}
.teacher-card .tc-intro{font-size:12px;line-height:1.7;color:var(--ink);margin:8px 0 0;border-top:1px dashed var(--line);padding-top:8px}

/* ===== 课程包图文详情：后台富文本在前台的图片优先展示 ===== */
.course-rich-detail{color:var(--ink);line-height:1.8;overflow-wrap:anywhere}
.course-rich-detail figure{margin:0 0 18px}
.course-rich-detail figure:last-child{margin-bottom:0}
.course-rich-detail img{display:block;width:100%;height:auto;margin:12px auto;background:var(--soft);border-radius:6px}
.course-rich-detail figure img{margin:0}
.course-rich-detail p{max-width:72ch;margin:12px auto;color:#4b5565}
.course-rich-detail h2,.course-rich-detail h3{margin:24px 0 10px;line-height:1.45}
.course-rich-detail h2{font-size:22px}
.course-rich-detail h3{font-size:18px}
.course-rich-detail ul,.course-rich-detail ol{max-width:68ch;padding-left:24px;color:#4b5565}
.course-rich-detail a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.course-rich-detail figcaption{margin-top:8px;text-align:center;color:var(--muted);font-size:12px}
.pack-paper-list{margin-top:12px;padding-top:10px;border-top:1px dashed var(--line)}
.user-order-row[hidden]{display:none}
.pack-paper-list summary{cursor:pointer;color:var(--ink);font-size:13px;font-weight:600}
.pack-paper-list summary span{float:right;color:var(--brand);font-size:12px;font-weight:400}
.pack-paper-rows{margin-top:8px}
.pack-paper-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-top:1px solid var(--line)}
.pack-paper-row>div{flex:1;min-width:0}
.pack-paper-row b{display:block;font-size:13px}
.pack-paper-row small{display:block;margin-top:3px;color:var(--muted);font-size:12px}
.tabs button:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
@media(max-width:760px){.course-rich-detail figure{margin-bottom:12px}.course-rich-detail img{border-radius:4px}.course-rich-detail h2{font-size:20px}}

/* 首页 Banner 轮播（与后台 Banner 图管理对应） */
.banner-strip{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:14px;margin:18px auto 0}
.banner-slide{position:relative;min-height:132px;border-radius:12px;padding:20px 22px;color:#fff;display:flex;flex-direction:column;justify-content:center;overflow:hidden;transition:transform .15s,box-shadow .15s}
.banner-slide:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(20,30,50,.18)}
.banner-slide:after{content:"";position:absolute;right:-30px;bottom:-40px;width:130px;height:130px;border-radius:50%;background:rgba(255,255,255,.16)}
.banner-slide .banner-label{font-size:19px;font-weight:800;line-height:1.4;position:relative;z-index:1}
.banner-slide small{margin-top:6px;font-size:12px;opacity:.9;position:relative;z-index:1}
.banner-A{background:linear-gradient(120deg,#dc2626,#f59e0b)}
.banner-B{background:linear-gradient(120deg,#172238,#3b82f6)}
.banner-C{background:linear-gradient(120deg,#6d28d9,#db2777)}
@media(max-width:760px){.banner-strip{grid-auto-flow:row;grid-auto-columns:auto;gap:10px}.banner-slide{min-height:96px;padding:14px 16px}.banner-slide .banner-label{font-size:15px}}

/* 首页中部主视觉 Banner（后台 Banner 图管理可轮播切换） */
.hero-banner{position:relative;min-height:380px;background-color:#fdf4f1;background-repeat:no-repeat}
.hero-banner .eyebrow{display:inline-block}
.hero-dots{position:absolute;left:44px;bottom:24px;display:flex;gap:8px}
.hero-dots button{width:9px;height:9px;border-radius:50%;border:0;background:#d9c4bd;cursor:pointer;padding:0;transition:.2s}
.hero-dots button.active{width:22px;border-radius:5px;background:var(--brand)}
@media(max-width:760px){.hero-dots{left:22px;bottom:16px}.hero-banner{min-height:320px}}


/* 顶部三块与下方内容的间距 */
.banner-strip{margin-bottom:18px}

/* 公告中心 */
.ann-head .section-head{align-items:flex-start}
.ann-search{display:flex;gap:8px;align-items:center}
.ann-search input{border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:13px;min-width:200px}
.ann-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:6px}
.ann-cat{display:flex;align-items:center;gap:10px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:.15s}
.ann-cat:hover{border-color:var(--brand);transform:translateY(-1px)}
.ann-cat.active{border-color:var(--brand);background:var(--brand-soft-2);box-shadow:0 0 0 1px var(--brand)}
.ann-cat b{display:block;font-size:14px}
.ann-cat small{color:var(--muted);font-size:12px}
.ann-row{display:flex;align-items:center;gap:14px;padding:16px 4px;border-top:1px dashed var(--line)}
.ann-row:first-of-type{border-top:0}
.ann-row:hover .ann-row-title strong{color:var(--brand)}
.ann-row-main{flex:1;min-width:0}
.ann-row-title{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ann-row-title strong{font-size:15px}
.ann-row-main p{margin:6px 0 4px;font-size:13px;line-height:1.6}
.ann-row-main small{font-size:12px}
.ann-arrow{color:var(--muted);font-size:18px}
.ann-nav{display:flex;justify-content:space-between;gap:16px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px}
.ann-nav a{color:var(--brand);max-width:48%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:760px){.ann-cats{grid-template-columns:1fr 1fr}.ann-search input{min-width:0;flex:1}.ann-nav{flex-direction:column}}

/* 题库：做题记录 */
.qb-stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:4px 0 14px}
.qb-stat{background:var(--soft);border-radius:10px;padding:12px 14px}
.qb-stat small{display:block;color:var(--muted);font-size:12px}
.qb-stat b{display:block;font-size:20px;margin-top:4px}
.qb-stat span{font-size:12px}
.qb-tbl th{white-space:nowrap}
.qb-tbl td{vertical-align:middle}
.qb-rate{display:flex;align-items:center;gap:8px;min-width:120px}
.qb-rate .progress{flex:1;height:6px}
.qb-rate small{color:var(--muted);font-size:12px;white-space:nowrap}
.modal:has(.practice-record){width:900px;max-width:94vw}
@media(max-width:760px){.qb-stat-row{grid-template-columns:1fr 1fr}}

/* 用户端弹窗（练习记录等） */
.modal-mask{position:fixed;inset:0;background:rgba(17,24,39,.45);display:flex;align-items:center;justify-content:center;z-index:200;padding:24px}
.modal-mask[hidden]{display:none}
.modal{background:#fff;border-radius:14px;width:560px;max-width:94vw;max-height:86vh;overflow:auto;padding:24px;box-shadow:0 24px 60px rgba(15,23,42,.25)}
.modal h3{margin:0 0 16px;font-size:17px}
.modal-foot{display:flex;justify-content:flex-end;gap:12px;margin-top:22px}

/* 题库表格：列宽与换行 */
.qb-tbl{table-layout:fixed}
.qb-tbl td,.qb-tbl th{vertical-align:middle;padding:10px 8px}
.qb-tbl td{white-space:normal;word-break:break-word;line-height:1.5}
.qb-tbl td:nth-child(2){font-weight:600}
.pr-q{white-space:normal!important;word-break:break-word;line-height:1.6}
.modal:has(.practice-record) .tbl{font-size:12px}

.qb-tbl td.ops{display:flex;align-items:center;gap:8px;justify-content:flex-end;flex-wrap:nowrap}
.qb-tbl td.ops .btn{padding:5px 10px;font-size:12px;white-space:nowrap}
.qb-tbl td.ops a:not(.btn){white-space:nowrap}