:root{
  --primary:#667eea; --secondary:#764ba2;
  --indigo:#4f46e5; --violet:#7c3aed;
  --gold:#f5b301; --gold-soft:#fbbf24;
  --ink:#1e293b; --text:#334155; --muted:#64748b; --line:#e2e8f0;
  --bg:#f5f6fb; --card:#ffffff;
  --radius:18px; --shadow:0 10px 40px rgba(30,41,59,.08); --shadow-hover:0 22px 56px rgba(79,70,229,.16);
}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg); color:var(--text); line-height:1.7; -webkit-font-smoothing:antialiased;}
a{text-decoration:none;color:inherit;}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px;}

/* 导航 */
header{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);box-shadow:0 2px 20px rgba(0,0,0,.06);position:sticky;top:0;z-index:1000;}
nav{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;height:70px;padding:0 30px;}
.logo img{height:42px;width:auto;display:block;}
.logo span{font-weight:800;font-size:1.2em;letter-spacing:-.5px;color:var(--ink);}
.nav-menu{display:flex;gap:6px;list-style:none;align-items:center;flex-wrap:wrap;}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:9px 15px;color:var(--muted);font-size:14.5px;font-weight:500;border-radius:10px;transition:.25s;white-space:nowrap;}
.nav-link:hover{color:var(--primary);background:rgba(102,126,234,.08);}
.nav-link.active{color:#fff;background:linear-gradient(135deg,var(--indigo),var(--violet));}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;padding:10px;cursor:pointer;background:none;border:none;}
.mobile-menu-btn span{width:24px;height:2px;background:#333;border-radius:2px;}

/* Hero */
.hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#312e81 0%,#4f46e5 45%,#7c3aed 100%);padding:72px 22px 90px;text-align:center;}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 18% 20%,rgba(245,179,1,.22),transparent 42%),radial-gradient(circle at 82% 80%,rgba(255,255,255,.16),transparent 45%);}
.hero::after{content:"";position:absolute;inset:0;opacity:.06;background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:22px 22px;}
.hero>*{position:relative;z-index:2;}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(245,179,1,.16);border:1px solid rgba(245,179,1,.5);color:var(--gold-soft);font-size:13.5px;font-weight:700;letter-spacing:.5px;margin-bottom:22px;}
.hero h1{font-size:2.5em;line-height:1.25;margin-bottom:8px;font-weight:800;letter-spacing:-.5px;}
.hero h1 .gold{background:linear-gradient(90deg,#fde68a,var(--gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero .sub{font-size:1.06em;opacity:.92;max-width:860px;margin:14px auto 0;}
.hero-entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;max-width:760px;margin:24px auto 0;text-align:left;}
.hero-entry-card{border:1px solid rgba(255,255,255,.38);background:rgba(255,255,255,.12);color:#fff;border-radius:16px;padding:16px 18px;cursor:pointer;font:inherit;box-shadow:0 12px 30px rgba(15,23,42,.16);transition:.22s;backdrop-filter:blur(8px);}
.hero-entry-card:hover{background:rgba(255,255,255,.2);transform:translateY(-3px);}
.hero-entry-card b{display:block;font-size:16px;line-height:1.35;margin-bottom:5px;color:#fff;}
.hero-entry-card span{display:block;font-size:13px;line-height:1.55;color:rgba(255,255,255,.86);}
.hero-entry-card.course{border-color:rgba(253,230,138,.62);}
.hero-entry-card.problem{border-color:rgba(153,246,228,.56);}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px;}
.hbtn{display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:14px;font-weight:700;font-size:15px;cursor:pointer;border:none;transition:.25s;}
.hbtn.primary{background:var(--gold);color:#3b2f00;box-shadow:0 10px 28px rgba(245,179,1,.34);}
.hbtn.primary:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(245,179,1,.45);}
.hbtn.ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.4);}
.hbtn.ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-3px);}

/* 闭环条 */
.flow{max-width:1120px;margin:-46px auto 0;padding:0 22px;position:relative;z-index:5;}
.flow-inner{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 18px;display:flex;align-items:center;gap:6px;overflow-x:auto;}
.flow-step{display:flex;flex-direction:column;align-items:center;gap:6px;flex:0 0 auto;padding:6px 8px;min-width:92px;text-align:center;}
.flow-step .dot{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;background:linear-gradient(135deg,#eef2ff,#ede9fe);color:var(--indigo);font-weight:800;}
.flow-step b{font-size:12.5px;color:var(--ink);font-weight:700;}
.flow-arrow{color:#cbd5e1;font-size:18px;flex:0 0 auto;}

section.block{padding:54px 0 8px;}
.page-extra,.page-extra[hidden]{display:none!important;}
.sec-head{text-align:center;margin-bottom:30px;}
.sec-head .kicker{color:var(--violet);font-weight:800;font-size:13px;letter-spacing:2px;text-transform:uppercase;}
.sec-head h2{font-size:1.7em;color:var(--ink);margin:6px 0 6px;font-weight:800;}
.sec-head p{color:var(--muted);max-width:700px;margin:0 auto;}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;border:1px solid rgba(0,0,0,.03);}

/* ===== 选择学习方式 ===== */
.mode-pick{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.mode-card{position:relative;overflow:hidden;border-radius:20px;padding:34px 30px;cursor:pointer;color:#fff;transition:.3s;border:2px solid transparent;}
.mode-card.course{background:linear-gradient(135deg,#4338ca,#6d28d9);}
.mode-card.problem{background:linear-gradient(135deg,#0f766e,#0e7490);}
.mode-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-hover);}
.mode-card.active{outline:3px solid var(--gold);outline-offset:3px;}
.mode-card .mc-ico{font-size:42px;margin-bottom:14px;}
.mode-card h3{font-size:1.45em;margin-bottom:8px;font-weight:800;}
.mode-card .mc-en{font-size:12.5px;letter-spacing:1px;opacity:.8;text-transform:uppercase;margin-bottom:12px;}
.mode-card p{font-size:14px;opacity:.94;line-height:1.6;}
.mode-card .mc-tag{display:inline-block;margin-top:14px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;}
.mode-card-action{margin-top:18px;display:inline-flex;align-items:center;justify-content:center;min-height:42px;border:1px solid rgba(255,255,255,.55);background:rgba(255,255,255,.18);color:#fff;border-radius:12px;padding:9px 16px;font:inherit;font-size:13.5px;font-weight:900;cursor:pointer;transition:.2s;}
.mode-card-action:hover{background:#fff;color:var(--indigo);transform:translateY(-2px);}

/* 表单 */
.mode-form{display:none;margin-top:24px;}
.mode-form.show{display:block;animation:fade .35s ease;}
@keyframes fade{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}
.form-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;flex-wrap:wrap;}
.form-head .ft{font-size:1.2em;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:10px;}
.form-head .ft .pill{font-size:12px;padding:4px 12px;border-radius:999px;font-weight:700;}
.pill.course{background:#ede9fe;color:#6d28d9;}
.pill.problem{background:#ccfbf1;color:#0f766e;}
.switch-link{font-size:13.5px;color:var(--violet);font-weight:700;cursor:pointer;}
.switch-link:hover{text-decoration:underline;}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.field label{display:block;font-weight:700;color:var(--ink);margin-bottom:10px;font-size:14.5px;}
.field label .hint{font-weight:400;color:var(--muted);font-size:12.5px;}
.opts{display:flex;flex-wrap:wrap;gap:8px;}
.opt{padding:9px 14px;border-radius:10px;border:1.5px solid var(--line);background:#fff;color:var(--text);font-size:13.5px;cursor:pointer;transition:.18s;user-select:none;}
.opt:hover{border-color:var(--violet);color:var(--violet);}
.opt.sel{background:linear-gradient(135deg,var(--indigo),var(--violet));border-color:transparent;color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(124,58,237,.25);}
.field.full{grid-column:1/-1;}
textarea,.text-input{width:100%;min-height:44px;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14px;font-family:inherit;color:var(--text);resize:vertical;transition:.2s;background:#fff;}
textarea{min-height:84px;}
textarea:focus,.text-input:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.12);}
.privacy-note{background:#faf9ff;border:1px dashed #d8ccff;border-radius:12px;padding:10px 12px;color:var(--muted);font-size:13px;line-height:1.6;}
/* 学习身份设置 */
.identity-card{border:1px solid rgba(245,179,1,.35);}
.identity-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap;margin-bottom:12px;}
.identity-head .kicker{color:var(--gold-soft);font-weight:700;font-size:12.5px;letter-spacing:.5px;}
.identity-title{font-size:1.3em;color:var(--ink);font-weight:800;margin-top:4px;}
.identity-pill{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:700;background:#f1f5f9;color:var(--muted);border:1px solid var(--line);white-space:nowrap;}
.identity-pill.on{background:rgba(245,179,1,.16);color:#a87c00;border-color:rgba(245,179,1,.5);}
.identity-privacy{background:#faf9ff;border:1px dashed #d8ccff;border-radius:12px;padding:11px 14px;color:var(--muted);font-size:13px;line-height:1.6;margin-bottom:18px;}
.identity-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px;}
.identity-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:20px;}
.identity-saved-note{font-size:13px;color:#1a7f37;font-weight:600;}
@media(max-width:640px){.identity-grid{grid-template-columns:1fr;}}
.gen-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:26px;}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:12px;font-weight:700;font-size:15px;border:none;cursor:pointer;transition:.22s;}
.btn-main{background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;box-shadow:0 10px 26px rgba(79,70,229,.3);}
.btn-main:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(79,70,229,.4);}
.btn-line{background:#fff;border:1.5px solid var(--line);color:var(--text);}
.btn-line:hover{border-color:var(--violet);color:var(--violet);}
.btn-gold{background:var(--gold);color:#3b2f00;box-shadow:0 8px 20px rgba(245,179,1,.3);}
.btn-gold:hover{transform:translateY(-3px);}
.btn-sm{padding:8px 16px;font-size:13px;border-radius:9px;}
.warn{color:#b91c1c;font-size:13px;font-weight:600;display:none;}

/* 评审快速体验 */
.quick{display:flex;gap:14px;flex-wrap:wrap;}
.quick-card{flex:1 1 220px;border:1.5px dashed var(--line);border-radius:14px;padding:18px;cursor:pointer;transition:.25s;background:#fff;text-align:left;}
.quick-card:hover{border-color:var(--violet);background:#faf9ff;transform:translateY(-4px);box-shadow:var(--shadow);}
.quick-card .qt{font-weight:800;color:var(--ink);display:flex;align-items:center;gap:8px;margin-bottom:6px;}
.quick-card .qd{font-size:13.5px;color:var(--muted);}
.quick-card .qtag{display:inline-block;margin-top:10px;font-size:12px;font-weight:700;}
.qtag.course{color:#6d28d9;} .qtag.problem{color:#0f766e;}
.scenario-chain{border:1px solid #d9eadf;background:#f7fff9;color:#245f3b;border-radius:12px;padding:10px 12px;margin:0 0 10px;font-size:14px;font-weight:900;line-height:1.6;}
.scenario-example{color:var(--muted);font-size:14px;margin-bottom:14px;line-height:1.75;}

/* 输出区 */
#output{display:none;margin-top:8px;}
.out-card{margin-bottom:20px;}
.out-card h3{font-size:1.15em;color:var(--ink);display:flex;align-items:center;gap:10px;margin-bottom:14px;font-weight:800;}
.out-card h3 .num{width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;font-size:14px;flex:0 0 auto;}
.diag-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.diag-tag{padding:5px 12px;border-radius:999px;background:#eef2ff;color:var(--indigo);font-size:13px;font-weight:700;}
.diag-tag.gold{background:#fff7e0;color:#a16207;}
.diag-tag.green{background:#ccfbf1;color:#0f766e;}
.diag-body{color:var(--text);font-size:14.5px;}

/* 学习路径步骤卡 */
.path-progress{display:flex;align-items:center;gap:12px;margin-bottom:18px;font-size:13.5px;color:var(--muted);}
.pbar{flex:1;height:8px;background:#eef2f7;border-radius:999px;overflow:hidden;}
.pbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--indigo),var(--violet));transition:width .4s ease;}
.step{position:relative;border:1px solid var(--line);border-radius:16px;padding:20px 20px 18px 64px;margin-bottom:16px;background:#fff;transition:.25s;}
.step::before{content:attr(data-step);position:absolute;left:18px;top:20px;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:15px;}
.step.done{background:linear-gradient(135deg,#f0fdf4,#ecfdf5);border-color:#86efac;}
.step.done::before{background:#16a34a;content:"✓";}
.step .s-title{font-size:1.12em;font-weight:800;color:var(--ink);margin-bottom:4px;}
.step .s-meta{font-size:12.5px;color:var(--muted);margin-bottom:12px;}
.step .s-meta b{color:var(--violet);}
.s-rows{display:grid;gap:9px;margin-bottom:14px;}
.s-row{display:grid;grid-template-columns:120px 1fr;gap:10px;font-size:13.8px;align-items:start;}
.s-row .k{font-weight:700;color:var(--muted);display:flex;align-items:center;gap:6px;}
.s-row .v{color:var(--text);}
.s-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.s-open{background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;}
.s-open:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(79,70,229,.3);}
.s-done{background:#fff;border:1.5px solid var(--line);color:var(--text);}
.s-done:hover{border-color:#16a34a;color:#16a34a;}
.step.done .s-done{background:#16a34a;color:#fff;border-color:#16a34a;}
.s-hint{font-size:12px;color:#94a3b8;width:100%;margin-top:2px;}
.visit-count{font-size:11px;color:#94a3b8;}

/* 提示词 */
.prompt-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px;}
.ptab{padding:8px 16px;border-radius:10px;border:1.5px solid var(--line);background:#fff;font-size:13.5px;font-weight:600;cursor:pointer;color:var(--muted);transition:.2s;}
.ptab.active{background:var(--ink);color:#fff;border-color:var(--ink);}
.prompt-tools{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;align-items:center;margin:0 0 10px;}
.prompt-tools .copy{background:#fff;border:1px solid var(--line);color:var(--ink);border-radius:9px;padding:7px 12px;font-size:12.5px;line-height:1.2;cursor:pointer;font-weight:800;white-space:nowrap;min-height:32px;}
.prompt-tools .copy:hover{border-color:var(--violet);color:var(--violet);background:#faf9ff;}
.prompt-tools .copy:disabled{opacity:.62;cursor:not-allowed;}
.prompt-answer-btn{background:linear-gradient(135deg,var(--violet),var(--indigo))!important;border-color:transparent!important;color:#fff!important;}
.prompt-answer-btn:hover{filter:brightness(1.05);}
.prompt-box{position:relative;background:#0f172a;border-radius:14px;padding:16px 18px;color:#e2e8f0;font-size:13.5px;line-height:1.75;white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.prompt-answer-box{display:none;margin-top:12px;border:1px solid #d8ccff;background:#faf9ff;border-radius:14px;padding:14px;color:var(--text);font-size:13.5px;line-height:1.75;white-space:pre-wrap;}
.prompt-answer-box.show{display:block;}
.prompt-answer-box b{display:block;color:var(--violet);margin-bottom:6px;}

/* 提示词填空支架 */
.prompt-slots{margin:0 0 12px;padding:14px 16px;border:1.5px dashed #d8ccff;background:#faf9ff;border-radius:14px;}
.prompt-slots .ps-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px;}
.prompt-slots .ps-title{font-weight:800;font-size:14px;color:var(--ink);}
.prompt-slots .ps-count{font-size:12px;font-weight:700;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:20px;padding:3px 10px;white-space:nowrap;}
.prompt-slots .ps-count.on{color:var(--violet);border-color:#d8ccff;}
.prompt-slots .ps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:10px 14px;}
.prompt-slots .ps-field{display:flex;flex-direction:column;gap:5px;}
.prompt-slots .ps-field>span{font-size:12.5px;font-weight:700;color:var(--text);}
.prompt-slots .ps-input{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;font-size:13.5px;background:#fff;color:var(--ink);transition:.18s;font-family:inherit;}
.prompt-slots .ps-input:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.12);}
.prompt-slots .ps-input::placeholder{color:#aab2c0;}
.prompt-slots .ps-hint{margin-top:10px;font-size:12px;color:var(--muted);line-height:1.6;}

/* 生成按钮加载态 */
.btn-main.is-loading{opacity:.75;cursor:progress;}
.btn-main:disabled{cursor:not-allowed;}

table.rubric{width:100%;border-collapse:collapse;font-size:13.5px;}
table.rubric th,table.rubric td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;}
table.rubric th{background:#f1f5ff;color:var(--ink);font-weight:700;}
table.rubric td:first-child{font-weight:700;color:var(--ink);background:#fafbff;width:120px;}
table.rubric .lv{color:var(--muted);}

.evidence-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px;color:var(--muted);font-size:13.5px;}
.evidence-head b{color:var(--ink);}
.gate-rule{background:#fff7e0;color:#92400e;border:1px solid #fde68a;border-radius:12px;padding:10px 12px;font-size:13.5px;font-weight:800;margin-bottom:12px;}
.check-list{display:grid;gap:9px;}
.evidence-item{display:flex;align-items:flex-start;gap:10px;border:1px solid var(--line);border-radius:12px;padding:11px 12px;background:#fff;cursor:pointer;transition:.18s;font-size:14px;}
.evidence-item:hover{border-color:var(--violet);background:#faf9ff;}
.evidence-item input{margin-top:4px;accent-color:var(--violet);}
.evidence-item.done{background:#f0fdf4;border-color:#86efac;color:#166534;}
.rubric-self{display:grid;gap:14px;}
.rubric-dim{border:1px solid var(--line);border-radius:14px;padding:14px;background:#fff;}
.rubric-dim h4{font-size:14.5px;color:var(--ink);margin-bottom:10px;}
.level-options{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;}
.level-btn{border:1.5px solid var(--line);background:#fff;border-radius:10px;padding:9px 10px;text-align:left;cursor:pointer;color:var(--text);transition:.18s;font-size:12.5px;line-height:1.45;min-height:82px;}
.level-btn b{display:block;color:var(--ink);font-size:13px;margin-bottom:3px;}
.level-btn:hover{border-color:var(--violet);}
.level-btn.on{background:linear-gradient(135deg,#eef2ff,#ede9fe);border-color:var(--violet);box-shadow:0 6px 16px rgba(124,58,237,.15);}
.progress-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;color:var(--ink);}
.progress-head b{font-size:1.05em;}
.progress-head span{font-size:1.4em;font-weight:900;color:var(--violet);}
.progress-wide{margin-bottom:14px;}
.progress-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;}
.progress-grid div{border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px;text-align:center;}
.progress-grid b{display:block;color:var(--ink);font-size:1.05em;}
.progress-grid span{display:block;color:var(--muted);font-size:12px;margin-top:2px;}
.learning-status-card{border:1px solid #d8ccff;background:linear-gradient(135deg,#ffffff,#faf9ff);border-radius:16px;padding:18px;box-shadow:0 10px 28px rgba(79,70,229,.08);margin-top:2px;}
.learning-status-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:14px;}
.learning-status-head span{display:block;color:var(--violet);font-size:12px;font-weight:900;letter-spacing:1px;text-transform:uppercase;}
.learning-status-head b{display:block;color:var(--ink);font-size:1.2em;margin-top:2px;}
.archive-percent{min-width:132px;text-align:right;}
.archive-percent strong{display:block;color:var(--violet);font-size:2em;line-height:1;font-weight:900;}
.archive-percent em{display:block;color:var(--muted);font-size:12px;font-style:normal;margin-top:4px;}
.learning-status-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:14px;}
.learning-status-grid div{border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px;text-align:center;min-height:72px;}
.learning-status-grid span{display:block;color:var(--muted);font-size:12px;margin-bottom:4px;}
.learning-status-grid b{display:block;color:var(--ink);font-size:1.02em;}
.learning-next-action{display:flex;align-items:center;gap:12px;margin-top:14px;border:1px solid #fde68a;background:#fff7e0;color:#92400e;border-radius:12px;padding:12px 14px;}
.learning-next-action span{font-size:12px;font-weight:900;white-space:nowrap;}
.learning-next-action b{font-size:14px;color:#78350f;line-height:1.55;}
.class-progress-card{
  border:1px solid #b7f7df;
  background:linear-gradient(135deg,#ffffff,#f0fdfa);
  border-radius:16px;
  padding:18px;
  box-shadow:0 10px 28px rgba(15,118,110,.08);
  margin-top:14px;
}
.class-progress-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  margin-bottom:14px;
}
.class-progress-head span{
  display:block;
  color:#0f766e;
  font-size:12px;
  font-weight:900;
  letter-spacing:1px;
  text-transform:uppercase;
}
.class-progress-head b{
  display:block;
  color:var(--ink);
  font-size:1.16em;
  margin-top:2px;
}
.class-progress-percent{
  min-width:132px;
  text-align:right;
}
.class-progress-percent strong{
  display:block;
  color:#0f766e;
  font-size:2em;
  line-height:1;
  font-weight:900;
}
.class-progress-percent em{
  display:block;
  color:var(--muted);
  font-size:12px;
  font-style:normal;
  margin-top:4px;
}
.class-progress-summary{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:10px;
}
.class-progress-summary div{
  border:1px solid var(--line);
  background:#fff;
  border-radius:12px;
  padding:12px;
  text-align:center;
  min-height:72px;
}
.class-progress-summary b{
  display:block;
  color:#0f766e;
  font-size:1.22em;
}
.class-progress-summary span{
  display:block;
  color:var(--muted);
  font-size:12px;
  margin-top:3px;
}
.peer-panels{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  margin-top:14px;
}
.peer-panel{
  border:1px solid var(--line);
  background:#fff;
  border-radius:12px;
  padding:14px;
}
.peer-title{
  color:var(--ink);
  font-size:14px;
  font-weight:900;
  margin-bottom:10px;
}
.peer-list{
  display:grid;
  gap:8px;
}
.peer-row{
  display:grid;
  grid-template-columns:44px minmax(0,1fr) 46px;
  gap:8px;
  align-items:center;
  color:var(--text);
  font-size:13px;
}
.peer-row span{
  font-weight:900;
  color:var(--muted);
}
.peer-row b{
  text-align:right;
  color:var(--ink);
}
.peer-row.me span,.peer-row.me b{
  color:#0f766e;
}
.peer-track{
  height:8px;
  border-radius:999px;
  background:#eef2f7;
  overflow:hidden;
}
.peer-track i{
  display:block;
  height:100%;
  min-width:2px;
  border-radius:999px;
  background:linear-gradient(90deg,#0f766e,#14b8a6);
}
.peer-note{
  border:1px solid #b7f7df;
  background:#ecfdf5;
  color:#0f766e;
  border-radius:12px;
  padding:12px;
  font-weight:900;
  font-size:14px;
  line-height:1.6;
}
.peer-privacy{
  margin-top:10px;
  color:var(--muted);
  font-size:12.5px;
  line-height:1.65;
}

.posttest-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;background:#faf9ff;border:1px solid #e2dcff;border-radius:12px;padding:12px 14px;color:var(--muted);font-size:13.5px;margin-bottom:12px;}
.posttest-head b{color:var(--ink);}
.posttest-list{display:grid;gap:12px;}
.posttest-card{border:1px solid var(--line);border-radius:14px;background:#fff;padding:16px;}
.posttest-card .qt{font-weight:800;color:var(--ink);margin-bottom:6px;line-height:1.55;}
.posttest-card .qd{font-size:13px;color:var(--muted);margin-bottom:10px;}
.posttest-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;}
.posttest-option{border:1.5px solid var(--line);border-radius:10px;background:#fff;padding:10px 12px;text-align:left;font:inherit;font-size:13.5px;color:var(--text);cursor:pointer;transition:.18s;}
.posttest-option:hover{border-color:var(--violet);color:var(--violet);background:#faf9ff;}
.posttest-option.selected{background:linear-gradient(135deg,var(--indigo),var(--violet));border-color:transparent;color:#fff;font-weight:700;box-shadow:0 6px 16px rgba(124,58,237,.22);}
.posttest-feedback{margin-top:10px;border-radius:10px;background:#f8fafc;color:#475569;font-size:12.5px;line-height:1.6;padding:8px 10px;}
.posttest-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:14px;}
.posttest-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px;}
.posttest-summary div,.compare-grid div,.compare-two div{border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px;}
.posttest-summary b,.compare-grid b{display:block;color:var(--ink);font-size:1.18em;}
.posttest-summary span,.compare-grid span,.compare-grid small{display:block;color:var(--muted);font-size:12px;margin-top:3px;}
.ability-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.ability-tags span{background:#eef2ff;color:var(--indigo);border-radius:999px;padding:5px 10px;font-size:12px;font-weight:700;}
.compare-empty{margin-top:12px;border:1px dashed #d8ccff;background:#faf9ff;border-radius:12px;padding:12px;color:var(--muted);font-size:13.5px;}
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px;}
.compare-grid .good{color:#15803d;}
.compare-grid .warn{color:#b91c1c;}
.compare-two{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;}
.compare-two b{color:var(--ink);font-size:13.5px;}
.compare-two p{margin-top:5px;color:var(--muted);font-size:13px;}
.ability-change-list{display:grid;gap:8px;margin-top:10px;}
.ability-change{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:9px 12px;font-size:13px;background:#fff;}
.ability-change span{font-weight:700;color:var(--ink);}
.ability-change b{color:var(--muted);}
.ability-change em{font-style:normal;font-weight:900;color:#64748b;}
.ability-change.up em{color:#15803d;}
.ability-change.down em{color:#b91c1c;}

.next-list{list-style:none;}
.next-list li{padding:10px 0 10px 30px;position:relative;border-bottom:1px dashed var(--line);font-size:14.5px;}
.next-list li:last-child{border-bottom:none;}
.next-list li::before{content:"→";position:absolute;left:0;top:10px;color:var(--gold);font-weight:800;}

.archive-box{background:#0f172a;border-radius:14px;padding:18px;color:#cbd5e1;font-size:13px;line-height:1.7;white-space:pre-wrap;max-height:340px;overflow:auto;font-family:ui-monospace,Menlo,Consolas,monospace;}
.archive-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;}

/* 资源地图 */
.map-filters{display:flex;flex-direction:column;gap:14px;margin-bottom:22px;}
.map-filters .frow{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.map-filters .flabel{font-size:13px;font-weight:700;color:var(--muted);width:74px;flex:0 0 auto;}
.chip{padding:7px 13px;border-radius:999px;border:1.5px solid var(--line);background:#fff;font-size:13px;cursor:pointer;transition:.18s;color:var(--text);}
.chip:hover{border-color:var(--violet);color:var(--violet);}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink);}
#mapCount{font-size:13px;color:var(--muted);margin-bottom:12px;}
.map-category-grid{grid-column:1/-1;width:100%;display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;}
.map-category-card{border:1px solid var(--line);border-radius:14px;background:linear-gradient(135deg,#fbfbff,#f7f4ff);padding:16px;text-align:left;transition:.22s;}
.map-category-card:hover{border-color:var(--violet);box-shadow:var(--shadow);transform:translateY(-3px);}
.map-category-card h4{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--ink);font-size:15px;margin-bottom:8px;}
.map-category-card h4 span{font-size:12px;color:var(--violet);background:#ede9fe;border-radius:999px;padding:3px 8px;white-space:nowrap;}
.map-category-card p{color:var(--muted);font-size:12.5px;line-height:1.55;margin-bottom:10px;}
.map-category-links{display:grid;gap:6px;margin-bottom:12px;}
.map-category-links a{display:block;color:var(--text);font-size:13px;line-height:1.45;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.map-category-links a:hover{color:var(--violet);}
.map-category-card button{border:0;background:var(--ink);color:#fff;border-radius:9px;padding:7px 12px;font:inherit;font-size:12.5px;font-weight:800;cursor:pointer;}
.map-category-card button:hover{background:var(--violet);}
.map-empty{border:1px dashed #c4b5fd;background:#faf9ff;border-radius:14px;padding:16px;color:var(--muted);font-size:13.5px;}
.res-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:14px;}
.res-card{display:flex;flex-direction:column;gap:6px;border:1px solid var(--line);border-radius:14px;padding:16px;background:linear-gradient(135deg,#fbfbff,#f6f4ff);transition:.25s;cursor:pointer;text-align:left;}
.res-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--violet);}
.res-card .rmatch{font-size:11.5px;font-weight:800;color:var(--violet);letter-spacing:.3px;}
.res-card .rtitle{font-weight:700;color:var(--ink);font-size:14.5px;line-height:1.4;}
.res-card .rmeta{font-size:12px;color:var(--muted);}
.res-card .rgo{margin-top:auto;font-size:13px;font-weight:700;color:var(--indigo);}
.knowledge-card{cursor:default;}
.kc-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px;}
.kc-meta span{display:inline-flex;align-items:center;border:1px solid #e2dcff;background:#fff;color:var(--muted);border-radius:999px;padding:4px 8px;font-size:11.5px;font-weight:700;}
.kc-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:8px;}
.kc-feedback{margin-top:8px;padding-top:10px;border-top:1px solid #e8e3f7;display:flex;flex-direction:column;gap:7px;}
.kc-feedback-prompt{font-size:12px;font-weight:800;color:var(--text);}
.kc-feedback-actions,.kc-feedback-reasons{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.kc-feedback-actions button,.kc-feedback-reasons button{border:1px solid #d9d1f4;background:#fff;color:var(--indigo);border-radius:999px;padding:5px 9px;font:inherit;font-size:11.5px;font-weight:800;cursor:pointer;}
.kc-feedback-actions button:hover,.kc-feedback-reasons button:hover,.kc-feedback-actions button.is-active{border-color:var(--violet);background:#f2edff;color:var(--violet);}
.kc-feedback-reasons span{font-size:11px;color:var(--muted);font-weight:700;}
.kc-feedback-reasons .kc-feedback-skip{border-style:dashed;color:var(--muted);font-weight:700;}
.kc-feedback.is-recorded{border-top-color:#d9eadf;}
.kc-feedback.is-recorded .kc-feedback-prompt{color:#2f7a4d;}
.kc-feedback [hidden]{display:none!important;}
.kc-panel-mask{position:fixed;inset:0;background:rgba(22,18,43,.48);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:24px;z-index:2100;}
.kc-panel-mask.show{display:flex;}
.kc-panel{position:relative;width:min(760px,100%);max-height:min(86vh,760px);overflow:auto;background:#fff;border-radius:18px;box-shadow:0 28px 80px rgba(33,24,80,.28);border:1px solid rgba(124,58,237,.18);padding:28px;}
.kc-close{position:absolute;top:16px;right:16px;width:34px;height:34px;border:0;border-radius:50%;background:#f3efff;color:var(--ink);font-size:24px;line-height:1;cursor:pointer;}
.kc-close:hover{background:#e8ddff;color:var(--violet);}
.kc-panel-head span{display:inline-flex;color:var(--violet);font-weight:800;font-size:12px;margin-bottom:8px;}
.kc-panel-head h3{font-size:1.45em;color:var(--ink);margin:0 38px 8px 0;}
.kc-panel-head p{color:var(--text);line-height:1.75;margin:0 0 18px;}
.kc-detail-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0 18px;}
.kc-detail-grid div{border:1px solid var(--line);background:linear-gradient(135deg,#fbfbff,#f7f4ff);border-radius:12px;padding:12px;}
.kc-detail-grid b{display:block;color:var(--ink);font-size:12px;margin-bottom:4px;}
.kc-detail-grid span{display:block;color:var(--muted);font-size:12.5px;line-height:1.5;}
.kc-section{border-top:1px solid var(--line);padding-top:14px;margin-top:14px;color:var(--text);}
.kc-section b{display:block;color:var(--ink);margin-bottom:8px;}
.kc-section ul{margin:0;padding-left:18px;line-height:1.8;}
.kc-section p{margin:0;line-height:1.75;}
.kc-media-list{display:flex;flex-direction:column;gap:10px;}
.kc-media-item{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--line);border-radius:12px;padding:10px;background:#fbfbff;color:var(--text);text-decoration:none;}
.kc-media-item img{display:block;max-width:50%;height:auto;object-fit:contain;border-radius:8px;border:1px solid var(--line);background:#fff;flex:0 1 50%;}
.kc-media-item span{display:flex;flex-direction:column;gap:4px;min-width:0;line-height:1.55;}
.kc-media-item em{font-style:normal;color:var(--text);font-size:12.5px;}
.kc-media-item small{color:var(--muted);font-size:12px;line-height:1.45;}
.kc-page-list{display:flex;flex-wrap:wrap;gap:8px;}
.kc-page-list a,.kc-page-list span{display:inline-flex;border:1px solid #e2dcff;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:700;background:#fbfaff;color:var(--indigo);}
.kc-panel-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px;}
.kc-question-hint{font-size:12px;color:var(--muted);margin:0 0 10px;}
.kc-question-area textarea{width:100%;min-height:84px;resize:vertical;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font:inherit;font-size:13px;line-height:1.6;background:#fff;color:var(--ink);outline:none;}
.kc-question-area textarea:focus{border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.12);}
.kc-question-tools{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;}
.kc-question-tools span{font-size:12px;color:var(--muted);font-weight:700;}
.kc-question-result{margin-top:12px;}
.kc-answer-card{border:1px solid #e2dcff;background:linear-gradient(135deg,#fbfbff,#f7f4ff);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:8px;}
.kc-answer-card p{margin:0;font-size:13px;line-height:1.65;color:var(--text);}
.kc-answer-card b{color:var(--ink);}
.kc-answer-card a{color:var(--indigo);font-weight:800;}
.kc-answer-mode{align-self:flex-start;border-radius:999px;padding:4px 8px;background:#fff;color:var(--violet);font-size:11px;font-weight:900;border:1px solid #e2dcff;}
.kc-answer-card .kc-caution{color:#6b5a39;}

/* ===== V2.7.1A-1 学生端构成修改工作台 ===== */
html,body{max-width:100%;overflow-x:hidden;}
.workbench-guide{display:none;border:1px solid #e2dcff;background:linear-gradient(135deg,#fbfbff,#f6f2ff);border-radius:18px;padding:18px;margin-bottom:18px;box-shadow:var(--shadow);text-align:left;}
.workbench-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:14px;}
.workbench-head h3{color:var(--ink);font-size:1.12em;margin-bottom:4px;}
.workbench-head p{color:var(--muted);font-size:13px;line-height:1.55;margin:0;}
.workbench-current{flex:0 0 auto;border:1px solid #e2dcff;background:#fff;color:var(--indigo);border-radius:999px;padding:7px 12px;font-size:12px;font-weight:900;}
.workbench-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;}
.workbench-step{border:1px solid #e2dcff;background:#fff;border-radius:14px;padding:12px;min-height:82px;text-align:left;display:grid;grid-template-columns:auto 1fr;gap:4px 9px;align-items:start;color:var(--text);font:inherit;cursor:pointer;}
.workbench-step span{grid-row:1/3;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:#ede9fe;color:var(--indigo);font-weight:900;}
.workbench-step b{color:var(--ink);font-size:13.5px;line-height:1.35;}
.workbench-step small{color:var(--muted);font-size:11.5px;line-height:1.45;}
.workbench-step.is-active{border-color:var(--violet);box-shadow:0 8px 22px rgba(124,58,237,.13);}
.workbench-step.is-active span{background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;}
.workbench-step.is-muted{opacity:.68;}
.workbench-mobile-nav{display:none;color:var(--indigo);font-size:12px;font-weight:900;background:#fff;border:1px solid #e2dcff;border-radius:999px;padding:8px 10px;text-align:center;}
.kc-reason b{color:var(--ink);}
.kc-action-section{border:1px solid #ece7ff;background:#fff;border-radius:12px;padding:10px 12px;margin-top:4px;}
.kc-action-section b{display:block;color:var(--ink);font-size:12.5px;margin-bottom:4px;}
.kc-action-section p,.kc-action-section li{font-size:13px;line-height:1.65;color:var(--text);}
.kc-action-section p{margin:0;}
.kc-action-section ol{margin:0;padding-left:18px;}
.kc-action-section.is-fast{background:#fffaf0;border-color:#f1dfad;}
.kc-action-details{border:1px dashed #d9d1f4;border-radius:12px;padding:9px 12px;background:#fbfaff;}
.kc-action-details summary,.kc-panel-details summary{cursor:pointer;color:var(--indigo);font-weight:900;font-size:12.5px;min-height:32px;display:flex;align-items:center;}
.kc-detail-row{margin-top:8px;}
.kc-detail-row b{display:block;color:var(--ink);font-size:12px;margin-bottom:3px;}
.kc-detail-row p{margin:0;color:var(--text);font-size:12.5px;line-height:1.65;}
.kc-revision-panel{border:1px solid #d9eadf;background:#f7fff9;border-radius:14px;padding:12px;margin-top:8px;}
.kc-revision-panel b{display:block;color:#245f3b;margin-bottom:4px;}
.kc-revision-panel p{margin:0 0 8px;color:var(--text);font-size:12.5px;line-height:1.6;}
.kc-revision-list{display:flex;flex-direction:column;gap:8px;}
.kc-revision-check{display:flex;align-items:flex-start;gap:8px;font-size:13px;line-height:1.55;color:var(--text);}
.kc-revision-check input{width:18px;height:18px;margin-top:1px;flex:0 0 auto;}
.kc-panel-details{border-top:1px solid var(--line);padding-top:12px;margin-top:12px;}
.kc-panel-details p{margin:0;line-height:1.75;}
.kc-panel-details ul{margin:6px 0 0;padding-left:18px;line-height:1.75;}
.btn:focus-visible,.workbench-step:focus-visible,.workspace-nav-item:focus-visible,.kc-feedback button:focus-visible,.kc-action-details summary:focus-visible,.kc-panel-details summary:focus-visible{outline:3px solid rgba(124,58,237,.22);outline-offset:2px;}
.workspace-anchor{position:relative;top:-92px;height:0;overflow:hidden;}
.student-workspace-nav{border:1px solid #e2dcff;background:linear-gradient(135deg,#fff,#f8f5ff);border-radius:18px;padding:16px;margin:0 0 18px;box-shadow:var(--shadow);text-align:left;}
.workspace-nav-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:12px;}
.workspace-nav-head h3{margin:0;color:var(--ink);font-size:1.08em;}
.workspace-nav-head p{margin:0;color:var(--muted);font-size:13px;line-height:1.6;max-width:420px;}
.workspace-nav-items{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;}
.workspace-nav-item{border:1px solid #e2dcff;background:#fff;border-radius:14px;padding:10px 10px 11px;text-align:left;color:var(--text);font:inherit;cursor:pointer;min-width:0;transition:.18s;}
.workspace-nav-item b{display:block;color:var(--indigo);font-size:15px;margin-bottom:2px;}
.workspace-nav-item span{display:block;color:var(--ink);font-size:12.5px;font-weight:900;margin-bottom:3px;}
.workspace-nav-item small{display:block;color:var(--muted);font-size:11.2px;line-height:1.38;}
.workspace-nav-item:hover,.workspace-nav-item.is-active{border-color:var(--violet);background:#f5f1ff;box-shadow:0 8px 20px rgba(124,58,237,.12);}
.workspace-nav-item.is-active b{color:var(--violet);}
.workspace-task-panel{border:1px solid #d8ccff;background:linear-gradient(135deg,#ffffff,#fbfaff);border-radius:18px;padding:18px;margin:0 0 16px;box-shadow:0 12px 34px rgba(79,70,229,.09);text-align:left;scroll-margin-top:92px;}
.workspace-task-step{display:inline-flex;align-items:center;border:1px solid #e2dcff;background:#f6f2ff;color:var(--violet);border-radius:999px;padding:4px 10px;font-size:12px;font-weight:900;margin-bottom:8px;}
.workspace-task-panel h3{font-size:1.15em;line-height:1.35;color:var(--ink);margin:0 0 8px;font-weight:900;}
.workspace-task-problem{border-left:4px solid var(--gold);background:#fffaf0;border-radius:10px;padding:10px 12px;margin:0 0 10px;color:var(--ink);font-size:14px;line-height:1.65;font-weight:800;}
.workspace-task-why,.workspace-task-now{display:grid;grid-template-columns:86px 1fr;gap:8px;align-items:start;border:1px solid #edf0f7;background:#fff;border-radius:12px;padding:10px 12px;margin-top:8px;}
.workspace-task-why b,.workspace-task-now b{color:var(--indigo);font-size:12.5px;white-space:nowrap;}
.workspace-task-why span,.workspace-task-now span{color:var(--text);font-size:13px;line-height:1.65;}
.workspace-task-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:14px;}
.workspace-task-primary{min-height:46px;justify-content:center;}
.workspace-task-secondary{min-height:42px;justify-content:center;opacity:.88;}
.workspace-task-next{margin:10px 0 0;color:var(--muted);font-size:12.5px;line-height:1.6;font-weight:700;}
.workspace-task-panel.is-focus{border-color:var(--violet);box-shadow:0 16px 42px rgba(124,58,237,.16);}
.single-view-anchor{height:0;overflow:hidden;scroll-margin-top:96px;}
body[data-active-single-view] .student-single-view.is-inactive-view{display:none!important;}
body[data-active-single-view] .student-single-view.is-active-view{animation:singleViewIn .22s ease;}
@keyframes singleViewIn{from{opacity:.45;transform:translateY(6px);}to{opacity:1;transform:none;}}
.student-workspace-nav{position:sticky;top:82px;z-index:40;}
.workspace-task-panel[data-view-container]{position:relative;}
.workspace-task-panel[data-view-container]::after{display:none;}
.single-view-detail-note{display:inline-flex;margin:10px 0 0;border:1px solid #e2dcff;background:#fff;color:var(--indigo);border-radius:999px;padding:4px 10px;font-size:11.5px;font-weight:900;line-height:1.45;}
.out-card[data-default-collapsed="true"].collapsed h3{flex-wrap:wrap;}
.out-card[data-default-collapsed="true"].collapsed h3::after{content:"查看详情 / 展开辅助内容";display:inline-flex;margin-left:10px;border:1px solid #e2dcff;background:#fff;color:var(--indigo);border-radius:999px;padding:3px 8px;font-size:11px;font-weight:800;line-height:1.4;vertical-align:middle;white-space:nowrap;}

/* 教师 / 架构 / 合规 */
.teach-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.teach-card{background:#fff;border-radius:16px;padding:24px;box-shadow:var(--shadow);border-top:4px solid var(--violet);}
.teach-card.b{border-top-color:var(--indigo);}
.teach-card.c{border-top-color:var(--gold);}
.teach-card h4{font-size:1.1em;color:var(--ink);margin-bottom:10px;}
.teach-card ul{margin:0;padding-left:18px;color:var(--text);font-size:14px;}
.teach-card li{margin-bottom:6px;}
.info-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.info-card{background:#fff;border-radius:16px;padding:24px;box-shadow:var(--shadow);}
.info-card h4{font-size:1.1em;color:var(--ink);margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.info-card p,.info-card li{font-size:13.8px;color:var(--text);}
.info-card ul{padding-left:18px;margin-top:6px;}
.info-card code{background:#eef2ff;color:#4338ca;padding:1px 6px;border-radius:5px;font-size:12.5px;}
.arch-flow{font-size:13.5px;color:var(--text);background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-top:10px;font-family:ui-monospace,Menlo,monospace;}

/* 参赛展示模块 */
.competition-section{padding-top:58px;}
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.review-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);}
.review-card::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,var(--indigo),var(--violet),var(--gold));}
.review-card.wide{grid-column:1/-1;}
.review-index{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:#eef2ff;color:var(--indigo);font-weight:900;font-size:13px;margin-bottom:12px;}
.review-card h4{font-size:1.08em;color:var(--ink);margin-bottom:8px;}
.review-card p{font-size:14px;color:var(--text);line-height:1.7;}
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.metric-card{background:linear-gradient(135deg,#fbfbff,#f6f4ff);border:1px solid var(--line);border-radius:16px;padding:20px;min-height:108px;box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:space-between;gap:12px;}
.metric-card.long{grid-column:span 3;min-height:auto;}
.metric-card span{font-size:13px;color:var(--muted);font-weight:700;}
.metric-card b{font-size:1.45em;line-height:1.3;color:var(--ink);}
.metric-card.long b{font-size:1.04em;color:var(--violet);}
.pending-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px;}
.pending-card{background:#fff;border:1.5px dashed #c4b5fd;border-radius:14px;padding:16px;text-align:center;}
.pending-card span{display:block;color:var(--muted);font-size:13px;font-weight:700;margin-bottom:5px;}
.pending-card b{color:var(--violet);font-size:1.05em;}
.workflow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.workflow-step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow);position:relative;}
.workflow-step span{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;font-size:13px;font-weight:900;margin-bottom:12px;}
.workflow-step h4{color:var(--ink);font-size:1.08em;margin-bottom:6px;}
.workflow-step p{font-size:13.8px;color:var(--text);line-height:1.65;}

footer{background:#1e293b;padding:40px 20px;text-align:center;color:rgba(255,255,255,.7);margin-top:64px;}
footer a{color:rgba(255,255,255,.8);}
footer a:hover{color:#fff;}
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:12px 22px;border-radius:12px;font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:.3s;z-index:2000;box-shadow:0 12px 30px rgba(0,0,0,.3);}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

@media (max-width:860px){
  .form-grid{grid-template-columns:1fr;}
  .mode-pick{grid-template-columns:1fr;}
  .teach-grid{grid-template-columns:1fr;}
  .info-2{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr;}
  .metric-card.long{grid-column:auto;}
  .pending-grid{grid-template-columns:1fr;}
  .workflow-grid{grid-template-columns:1fr;}
  .s-row{grid-template-columns:1fr;gap:2px;}
  .level-options{grid-template-columns:1fr;}
  .progress-grid{grid-template-columns:1fr 1fr;}
  .learning-status-head{flex-direction:column;}
  .archive-percent{text-align:left;}
  .learning-status-grid{grid-template-columns:1fr 1fr;}
  .class-progress-head{flex-direction:column;}
  .class-progress-percent{text-align:left;}
  .class-progress-summary{grid-template-columns:1fr 1fr;}
  .peer-panels{grid-template-columns:1fr 1fr;}
  .learning-next-action{align-items:flex-start;flex-direction:column;gap:4px;}
  .posttest-summary,.compare-grid,.compare-two{grid-template-columns:1fr;}
  .kc-detail-grid{grid-template-columns:1fr 1fr;}
  .kc-panel{padding:22px;}
  .kc-panel-actions{justify-content:flex-start;flex-wrap:wrap;}
  .hero h1{font-size:1.9em;}
  .nav-menu{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:18px;box-shadow:0 10px 30px rgba(0,0,0,.12);}
  .nav-menu.active{display:flex;}
  .mobile-menu-btn{display:flex;}
}
@media (max-width:560px){
  .l{}}
/* ^ V2.0-G1 修复：原文件在 560px media query 处截断（".l"悬挂选择器），上行闭合悬挂规则。
   若发现 560px 以下移动端样式缺失，属于 V1.9.1 既有截断，需从历史版本找回。 */

/* ===== V2.0-G1 作业卡 ===== */
.assign-topic{margin-top:18px;}
.assign-topic-title{font-weight:700;color:var(--ink);font-size:14.5px;margin-bottom:10px;padding-left:10px;border-left:3px solid var(--gold,#c9a063);}
.assign-card{border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:14px 16px;margin-bottom:12px;background:#fff;}
.assign-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.assign-head b{font-size:14px;color:var(--ink);}
.assign-badges{display:flex;gap:6px;}
.assign-badge{font-size:11.5px;padding:2px 8px;border-radius:999px;background:rgba(201,160,99,.12);color:#8a6a3a;}
.assign-badge.life{background:rgba(76,160,90,.12);color:#3a7a48;}
.assign-status{margin-left:auto;font-size:12px;padding:3px 10px;border-radius:999px;background:#eee;color:#777;}
.assign-status.s-doing{background:rgba(201,160,99,.15);color:#8a6a3a;}
.assign-status.s-submitted{background:rgba(76,160,90,.15);color:#2e7a40;}
.assign-reqs{margin:10px 0 8px;padding-left:18px;color:var(--muted);font-size:13px;line-height:1.7;}
.assign-outputs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;}
.assign-output{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;padding:6px 10px;border:1px dashed rgba(0,0,0,.18);border-radius:8px;cursor:pointer;color:var(--muted);}
.assign-output.done{border-style:solid;border-color:rgba(76,160,90,.5);background:rgba(76,160,90,.06);color:#2e7a40;}
.assign-note{width:100%;min-height:64px;border:1px solid rgba(0,0,0,.12);border-radius:8px;padding:8px 10px;font-size:13px;resize:vertical;box-sizing:border-box;}
.assign-actions{display:flex;align-items:center;gap:12px;margin-top:8px;}
.assign-hint{font-size:12.5px;color:#b06a2a;}
.assign-photo-privacy{font-size:11.8px;line-height:1.5;color:#7a5a22;background:#fff7ed;border:1px solid #fed7aa;border-radius:8px;padding:7px 9px;margin:8px 0 0;}

/* ===== V2.0-H1 迭代卡 ===== */
.assign-iter{border:1px solid rgba(120,90,200,.18);background:rgba(120,90,200,.04);border-radius:10px;padding:12px 14px;margin-bottom:10px;}
.iter-head{display:flex;align-items:center;gap:10px;margin-bottom:8px;}
.iter-head b{font-size:13px;color:#5a4a8a;}
.iter-count{font-size:11.5px;padding:2px 8px;border-radius:999px;background:rgba(120,90,200,.12);color:#5a4a8a;}
.iter-empty{font-size:12.5px;color:var(--muted);margin:4px 0 10px;line-height:1.7;}
.iter-chain{display:flex;flex-direction:column;gap:8px;margin-bottom:10px;}
.iter-item{background:#fff;border:1px solid rgba(0,0,0,.07);border-radius:8px;padding:8px 10px;}
.iter-item-head{display:flex;align-items:center;gap:8px;margin-bottom:6px;}
.iter-v{font-weight:700;font-size:12px;color:#5a4a8a;}
.iter-judge{font-size:11.5px;padding:1px 8px;border-radius:999px;background:#f0f0f0;color:#666;}
.iter-judge.j-adopt{background:rgba(76,160,90,.12);color:#2e7a40;}
.iter-judge.j-revise{background:rgba(201,160,99,.14);color:#8a6a3a;}
.iter-judge.j-discard{background:rgba(200,80,80,.1);color:#a04040;}
.iter-row{font-size:12.5px;color:var(--ink);line-height:1.6;margin-bottom:3px;word-break:break-all;}
.iter-row i{font-style:normal;color:#999;font-size:11.5px;margin-right:6px;}
.iter-form{display:flex;flex-direction:column;gap:6px;}
.iter-form textarea{min-height:40px;border:1px solid rgba(0,0,0,.12);border-radius:8px;padding:6px 10px;font-size:12.5px;resize:vertical;box-sizing:border-box;}
.iter-judge-row{display:flex;gap:14px;font-size:12.5px;color:var(--muted);flex-wrap:wrap;}
.iter-judge-row label{display:inline-flex;align-items:center;gap:4px;cursor:pointer;}
.iter-reason{font-size:12.5px;}
.iter-actions{display:flex;align-items:center;gap:10px;}
.iter-hint{font-size:12px;color:#b06a2a;}

/* ===== V2.0-I1 AI 量规预批 ===== */
.assign-precheck{margin-top:10px;border:1px solid rgba(70,130,180,.22);background:rgba(70,130,180,.05);border-radius:10px;padding:10px 14px;}
.precheck-loading{font-size:12.5px;color:var(--muted);}
.precheck-head{display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.precheck-level{font-weight:800;font-size:14px;padding:2px 12px;border-radius:999px;background:#eee;color:#666;}
.precheck-level.lv-L1{background:rgba(200,80,80,.12);color:#a04040;}
.precheck-level.lv-L2{background:rgba(220,150,60,.14);color:#9a6a20;}
.precheck-level.lv-L3{background:rgba(76,160,90,.14);color:#2e7a40;}
.precheck-level.lv-L4{background:rgba(70,130,180,.16);color:#2a5a8a;}
.precheck-mode{font-size:11.5px;color:#999;}
.precheck-comment{font-size:13px;color:var(--ink);line-height:1.7;margin-bottom:6px;}
.precheck-suggestion{font-size:12.5px;color:#2a5a8a;line-height:1.6;margin-bottom:6px;}
.precheck-caution{font-size:11.5px;color:#999;}

/* ===== V2.1-S1 项目线 / 指引条 / 渐进式输出 ===== */
.project-line{background:var(--card);border:1px solid rgba(15,118,110,.25);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 20px;margin-bottom:14px;}
.pl-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px;}
.pl-head b{color:#0f766e;font-size:14.5px;}
.pl-head span{font-size:12.5px;color:var(--muted);}
.pl-steps{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.pl-step{font-size:12px;padding:4px 11px;border-radius:999px;background:#f1f5f9;color:#94a3b8;white-space:nowrap;}
.pl-step.done{background:rgba(15,118,110,.1);color:#0f766e;}
.pl-step.cur{background:linear-gradient(135deg,#0f766e,#14b8a6);color:#fff;font-weight:700;box-shadow:0 4px 12px rgba(15,118,110,.3);}
.pl-arrow{font-style:normal;color:#cbd5e1;font-size:13px;}
.pl-assets{margin-top:10px;font-size:12.5px;color:var(--muted);line-height:1.6;}
.pl-assets b{color:#0f766e;font-weight:700;}

.guide-bar{position:sticky;top:74px;z-index:60;display:flex;align-items:center;gap:12px;background:#fff7e0;border:1px solid #fde68a;border-radius:12px;padding:10px 16px;margin-bottom:14px;box-shadow:0 6px 18px rgba(146,64,14,.08);}
.gb-label{font-size:12px;font-weight:900;color:#92400e;white-space:nowrap;}
.guide-bar b{flex:1;font-size:13.5px;color:#78350f;line-height:1.5;}
.gb-pct{font-size:14px;font-weight:900;color:#a16207;white-space:nowrap;}

.out-card.collapsed>*:not(h3){display:none!important;}
.out-card.collapsed h3{margin-bottom:0;}
.out-card.locked::after{content:"🔒 " attr(data-lockhint);display:block;margin-top:8px;font-size:12px;color:#94a3b8;}
.out-card.collapsed{padding-top:20px;padding-bottom:20px;opacity:.85;}

/* ===== V2.1-S2 素材库 / 错题归因 / 薄弱复测 ===== */
.assign-assets{border:1px dashed rgba(15,118,110,.4);background:rgba(15,118,110,.04);border-radius:10px;padding:10px 14px;margin-bottom:10px;}
.assign-assets b{display:block;font-size:12.5px;color:#0f766e;margin-bottom:6px;}
.assign-assets span{display:inline-block;font-size:12px;color:var(--text);background:#fff;border:1px solid rgba(15,118,110,.2);border-radius:999px;padding:3px 10px;margin:0 6px 6px 0;}
.assign-assets i{display:block;font-style:normal;font-size:11.5px;color:var(--muted);}

.attrib-area{margin-top:14px;}
.attrib-result{margin-top:10px;display:grid;gap:8px;}
.attrib-item{border:1px solid rgba(220,150,60,.3);background:rgba(220,150,60,.05);border-radius:10px;padding:10px 14px;}
.attrib-item b{font-size:13px;color:#9a6a20;}
.attrib-why{font-size:13px;color:var(--ink);line-height:1.65;margin:4px 0;}
.attrib-micro{font-size:12.5px;color:#2a5a8a;line-height:1.65;}
.attrib-caution{font-size:11.5px;color:#999;margin-top:6px;}

.retest-card{border:1.5px dashed rgba(120,90,200,.45)!important;background:rgba(120,90,200,.04)!important;}
.retest-tag{display:inline-block;font-size:12px;font-weight:800;color:#5a4a8a;background:rgba(120,90,200,.12);border-radius:999px;padding:3px 12px;margin-bottom:8px;}
.retest-q{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:10px;line-height:1.6;}
.retest-feedback{margin-top:10px;border-radius:10px;background:#faf9ff;border:1px solid #e2dcff;padding:10px 12px;font-size:13px;color:var(--text);line-height:1.65;}

/* ===== V2.1-S3 举手求助 ===== */
.help-float{position:fixed;right:22px;bottom:24px;z-index:1500;border:none;border-radius:999px;padding:12px 20px;font-size:14px;font-weight:800;cursor:pointer;background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;box-shadow:0 10px 28px rgba(79,70,229,.4);transition:.22s;}
.help-float:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(79,70,229,.5);}
@media (max-width:860px){.help-float{right:14px;bottom:16px;padding:10px 16px;font-size:13px;}}

/* ===== V2.2-A1 新手向导 ===== */
.onboard-overlay{position:fixed;inset:0;background:rgba(22,18,43,.55);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:24px;z-index:2200;}
.onboard-overlay.show{display:flex;}
.ob-card{width:min(440px,100%);background:#fff;border-radius:18px;box-shadow:0 28px 80px rgba(33,24,80,.3);padding:26px 28px;}
.ob-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;}
.ob-head b{color:var(--violet);font-size:13px;}
.ob-head span{font-size:12px;color:var(--muted);}
.ob-title{font-size:1.3em;color:var(--ink);font-weight:800;margin-bottom:10px;}
.ob-desc{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px;}
.ob-hint{min-height:18px;font-size:12.5px;color:#b91c1c;margin-top:10px;}
.ob-actions{display:flex;align-items:center;gap:10px;margin-top:8px;}
.ob-skip{margin-left:auto;font-size:12.5px;color:var(--muted);cursor:pointer;text-decoration:underline;}
.ob-skip:hover{color:var(--violet);}

/* ===== V2.2-B4 提示词点评 ===== */
.prompt-review-box{margin:0 0 12px;border:1px solid rgba(70,130,180,.25);background:rgba(70,130,180,.05);border-radius:12px;padding:12px 16px;}
.pr-strengths{font-size:12.5px;color:#2e7a40;margin-bottom:8px;line-height:1.7;}
.pr-missing{margin:0 0 8px;padding-left:18px;font-size:13px;color:#9a6a20;line-height:1.75;}
.pr-suggestion{font-size:12.5px;color:#2a5a8a;line-height:1.65;margin-bottom:6px;}

/* ===== V2.2-I2 拍照批改 ===== */
.photo-preview{margin-bottom:10px;}
.photo-preview img{display:block;max-width:220px;max-height:220px;border-radius:10px;border:1px solid rgba(0,0,0,.1);object-fit:contain;background:#fff;}
.photo-problems{margin:0 0 8px;padding-left:18px;font-size:12.5px;color:#9a6a20;line-height:1.7;list-style:none;}
.photo-problems li{margin-left:-18px;}

/* ===== V2.2-S5C 双预批协同提示 ===== */
.dual-precheck-hint{margin-top:10px;border:1px solid rgba(120,90,200,.3);background:rgba(120,90,200,.06);border-radius:10px;padding:10px 14px;font-size:13px;color:#4a3a7a;line-height:1.7;font-weight:600;}
.vision-field{display:grid;grid-template-columns:82px 1fr;gap:8px;margin:0 0 7px;font-size:12.5px;color:var(--text);line-height:1.65;}
.vision-field b{font-size:12px;color:#2a5a8a;white-space:nowrap;}
.vision-field.warn b{color:#9a6a20;}
.vision-next{display:grid;grid-template-columns:58px 1fr;gap:8px;margin:0 0 8px;font-size:12.5px;color:#2e7a40;line-height:1.65;}
.vision-next b{font-size:12px;color:#2e7a40;white-space:nowrap;}
.vision-tags{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 8px;}
.vision-tags span{font-size:11.5px;line-height:1.3;padding:3px 8px;border-radius:999px;background:#eef2ff;color:#4338ca;border:1px solid #dbe3ff;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.vision-tags.compact{margin:5px 0 0;gap:4px;}
.vision-tags.compact span{font-size:11px;padding:2px 7px;background:#f1f5f9;color:#64748b;border-color:#e2e8f0;}
.vision-remediation-path,.vision-remediation-mini{border:1px solid rgba(46,122,64,.18);background:rgba(46,122,64,.045);border-radius:8px;padding:10px 11px;margin:9px 0;}
.vision-remediation-mini{background:#fff;border-color:rgba(15,118,110,.14);padding:9px;margin:0 0 9px;}
.vision-remediation-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;}
.vision-remediation-head b{font-size:12.8px;color:#2e7a40;}
.vision-remediation-head span{font-size:11.5px;color:var(--muted);line-height:1.4;text-align:right;}
.vision-remediation-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;}
.vision-remediation-mini .vision-remediation-steps{grid-template-columns:repeat(3,minmax(0,1fr));}
.vision-remediation-step{display:grid;grid-template-columns:24px 1fr;gap:7px;align-items:start;background:#fff;border:1px solid rgba(46,122,64,.1);border-radius:8px;padding:8px;min-width:0;}
.vision-remediation-step i{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:999px;background:#ecfdf5;color:#047857;font-style:normal;font-size:11.5px;font-weight:900;border:1px solid #bbf7d0;}
.vision-remediation-step b{display:block;font-size:12.2px;color:var(--ink);line-height:1.35;margin-bottom:3px;}
.vision-remediation-step p{font-size:11.8px;line-height:1.5;color:var(--text);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.vision-recommend-box{border:1px solid rgba(15,118,110,.18);background:rgba(15,118,110,.04);border-radius:10px;padding:10px 12px;margin:10px 0;}
.vision-recommend-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;}
.vision-recommend-head b{font-size:12.8px;color:#0f766e;}
.vision-recommend-head span{font-size:11.5px;color:var(--muted);}
.vision-recommend-list{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;}
.vision-recommend-item{background:#fff;border:1px solid rgba(15,118,110,.13);border-radius:8px;padding:9px;min-width:0;}
.vision-recommend-item>div:first-child{display:flex;align-items:center;gap:6px;margin-bottom:5px;}
.vision-recommend-item>div:first-child span{flex:0 0 auto;font-size:11px;line-height:1.2;border-radius:999px;background:rgba(15,118,110,.1);color:#0f766e;padding:3px 7px;font-weight:800;}
.vision-recommend-item>div:first-child b{font-size:12.5px;line-height:1.35;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.vision-recommend-item p{font-size:12px;color:var(--text);line-height:1.55;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.vision-recommend-item button{margin-top:7px;}
.assign-vision-history{margin-top:10px;}
.vision-history-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:7px;}
.vision-history-head b{font-size:12.5px;color:#5a4a8a;}
.vision-history-head span{font-size:11.5px;color:var(--muted);}
.vision-history-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;}
.vision-history-item{display:grid;grid-template-columns:54px 1fr;gap:8px;align-items:start;border:1px solid rgba(120,90,200,.16);background:#fbfaff;border-radius:8px;padding:8px;min-width:0;}
.vision-history-item img{width:54px;height:54px;border-radius:6px;object-fit:cover;background:#fff;border:1px solid rgba(0,0,0,.08);}
.vision-history-body{min-width:0;}
.vision-history-body>div{display:flex;align-items:center;gap:6px;margin-bottom:4px;}
.vision-history-body small{font-size:11px;color:var(--muted);}
.vision-history-body p{margin:0;font-size:12px;line-height:1.55;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.vision-mistake-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:10px;}
.vision-mistake-summary div{border:1px solid rgba(70,130,180,.16);background:rgba(70,130,180,.04);border-radius:8px;padding:8px 10px;}
.vision-mistake-summary span{display:block;font-size:11.5px;color:var(--muted);margin-bottom:2px;}
.vision-mistake-summary b{font-size:16px;color:var(--ink);}
.vision-mistake-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.vision-mistake-filters select{height:32px;border:1px solid rgba(0,0,0,.12);border-radius:8px;background:#fff;color:var(--text);font-size:12.5px;padding:0 9px;max-width:180px;}
.vision-mistake-layout{display:grid;grid-template-columns:minmax(220px,280px) 1fr;gap:12px;align-items:start;}
.vision-mistake-list{display:grid;gap:8px;max-height:520px;overflow:auto;padding-right:2px;}
.vision-mistake-row{display:grid;grid-template-columns:52px 1fr;gap:8px;text-align:left;border:1px solid rgba(0,0,0,.08);background:#fff;border-radius:8px;padding:8px;cursor:pointer;min-width:0;}
.vision-mistake-row:hover,.vision-mistake-row.on{border-color:rgba(120,90,200,.45);background:#fbfaff;}
.vision-mistake-row img,.vision-thumb-empty{width:52px;height:52px;border-radius:6px;object-fit:cover;border:1px solid rgba(0,0,0,.08);background:#f8fafc;display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:12px;}
.vision-mistake-row-body{min-width:0;display:block;}
.vision-mistake-row-body b{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--ink);line-height:1.35;margin-bottom:2px;}
.vision-mistake-row-body i{font-style:normal;flex:0 0 auto;}
.vision-mistake-row-body small{display:block;font-size:11px;color:var(--muted);line-height:1.4;margin-bottom:2px;}
.vision-mistake-row-body em{display:block;font-style:normal;font-size:11.8px;color:var(--text);line-height:1.45;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.vision-mistake-detail{border:1px solid rgba(120,90,200,.16);background:#fff;border-radius:8px;padding:12px;min-width:0;}
.vision-detail-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:10px;}
.vision-detail-head b{display:block;color:var(--ink);font-size:14px;}
.vision-detail-head span{display:block;color:var(--muted);font-size:11.5px;margin-top:2px;}
.vision-status{flex:0 0 auto;font-size:11.5px!important;color:#5a4a8a!important;background:rgba(120,90,200,.1);border-radius:999px;padding:3px 9px;}
.vision-detail-img{display:block;max-width:100%;max-height:300px;object-fit:contain;background:#f8fafc;border:1px solid rgba(0,0,0,.08);border-radius:8px;margin-bottom:10px;}
.vision-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px;}
.vision-detail-grid p{margin:0;border:1px solid rgba(0,0,0,.06);background:#f8fafc;border-radius:8px;padding:8px;font-size:12.5px;line-height:1.6;color:var(--text);}
.vision-detail-grid b{display:block;color:#2a5a8a;font-size:11.5px;margin-bottom:2px;}
.vision-student-reflection{border:1px solid rgba(42,90,138,.18);background:rgba(70,130,180,.06);border-radius:8px;padding:9px 11px;margin:8px 0;}
.vision-student-reflection div{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:5px;}
.vision-student-reflection b{font-size:12.5px;color:#2a5a8a;}
.vision-student-reflection span{font-size:11.5px;color:#5a4a8a;background:#fff;border:1px solid rgba(120,90,200,.14);border-radius:999px;padding:2px 8px;flex:0 0 auto;}
.vision-student-reflection p{font-size:12.5px;line-height:1.6;color:var(--text);margin:0;}
.vision-student-reflection small{display:block;font-size:11.5px;color:var(--muted);line-height:1.45;margin-top:4px;}
.vision-detail-title{font-size:12.5px;font-weight:800;color:#5a4a8a;margin:10px 0 7px;}
.vision-iteration{border-top:1px dashed rgba(120,90,200,.22);margin-top:10px;padding-top:8px;}
.vision-iteration-line{display:flex;gap:6px;flex-wrap:wrap;}
.vision-iteration-line span{border:1px solid #e2e8f0;background:#f8fafc;border-radius:999px;padding:4px 9px;display:inline-flex;align-items:center;gap:5px;font-size:11.5px;color:#64748b;}
.vision-iteration-line span.on{border-color:rgba(120,90,200,.45);background:rgba(120,90,200,.08);color:#5a4a8a;}
.vision-iteration-line b{font-size:12px;}
.vision-iteration-line small{font-size:11px;}
.vision-iteration p{font-size:12.5px;color:var(--muted);line-height:1.6;margin:7px 0 0;}
.vision-iteration-compare{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:8px;align-items:stretch;margin-top:8px;}
.vision-iteration-card{border:1px solid rgba(0,0,0,.08);background:#f8fafc;border-radius:8px;padding:8px;min-width:0;}
.vision-iteration-card b{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;color:var(--ink);margin-bottom:6px;}
.vision-iteration-card b span{font-size:11.5px;color:#5a4a8a;background:rgba(120,90,200,.1);border-radius:999px;padding:2px 7px;flex:0 0 auto;}
.vision-iteration-card img,.vision-iteration-card i{display:block;width:100%;aspect-ratio:4/3;object-fit:contain;border:1px solid rgba(0,0,0,.08);border-radius:7px;background:#fff;}
.vision-iteration-card i{display:flex;align-items:center;justify-content:center;font-style:normal;color:#94a3b8;font-size:12px;}
.vision-iteration-card p{margin:6px 0 0;font-size:12px;line-height:1.45;color:var(--text);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.vision-iteration-delta{align-self:center;min-width:72px;text-align:center;border:1px solid rgba(42,90,138,.18);background:rgba(70,130,180,.06);border-radius:8px;padding:8px 6px;}
.vision-iteration-delta b{display:block;font-size:12px;color:#2a5a8a;line-height:1.35;}
.vision-iteration-delta span{display:block;font-size:11px;color:var(--muted);margin-top:2px;}
.vision-review-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;}
.vision-mistake-empty{border:1px dashed rgba(70,130,180,.28);background:rgba(70,130,180,.04);border-radius:8px;padding:14px;color:var(--muted);font-size:13px;line-height:1.65;}
.vision-mistake-empty b{display:block;color:var(--ink);margin-bottom:2px;}
.vision-library-sync{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid rgba(90,74,138,.14);background:#fbfaff;border-radius:8px;padding:8px 10px;margin-bottom:10px;}
.vision-library-sync b{font-size:12.8px;color:#5a4a8a;white-space:nowrap;}
.vision-library-sync span{flex:1;min-width:0;color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.vision-library-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.vision-library-tabs button{border:1px solid rgba(120,90,200,.22);background:#fff;color:var(--text);border-radius:999px;padding:7px 13px;font-size:12.5px;font-weight:800;cursor:pointer;}
.vision-library-tabs button.on{background:linear-gradient(135deg,#5a4a8a,#7c6bb4);color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(90,74,138,.18);}
.vision-library-tabs b{font-size:11px;margin-left:4px;opacity:.82;}
.vision-library-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.vision-library-filters select{height:32px;border:1px solid rgba(0,0,0,.12);border-radius:8px;background:#fff;color:var(--text);font-size:12.5px;padding:0 9px;max-width:190px;}
.vision-library-layout{display:grid;grid-template-columns:minmax(230px,310px) 1fr;gap:12px;align-items:start;}
.vision-library-list{display:grid;gap:8px;max-height:540px;overflow:auto;padding-right:2px;}
.vision-library-row{display:grid;grid-template-columns:58px 1fr;gap:9px;text-align:left;border:1px solid rgba(0,0,0,.08);background:#fff;border-radius:8px;padding:9px;cursor:pointer;min-width:0;}
.vision-library-row:hover,.vision-library-row.on{border-color:rgba(90,74,138,.46);background:#fbfaff;}
.vision-library-row img{width:58px;height:58px;border-radius:7px;object-fit:cover;border:1px solid rgba(0,0,0,.08);background:#f8fafc;}
.vision-library-row-body{display:block;min-width:0;}
.vision-library-row-body b{display:block;font-size:12.8px;color:var(--ink);line-height:1.35;margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.vision-library-row-body small{display:block;font-size:11px;color:var(--muted);line-height:1.4;margin-bottom:2px;}
.vision-library-row-body em{display:block;font-style:normal;font-size:11.8px;color:var(--text);line-height:1.45;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.vision-library-detail{border:1px solid rgba(90,74,138,.16);background:#fff;border-radius:8px;padding:12px;min-width:0;}
.vision-library-teacher{border:1px solid rgba(201,160,99,.28);background:rgba(201,160,99,.07);border-radius:8px;padding:9px 11px;margin-bottom:10px;}
.vision-library-teacher b{display:block;font-size:12px;color:#8a6a3a;margin-bottom:3px;}
.vision-library-teacher p{font-size:12.8px;line-height:1.65;color:var(--text);margin:0;}
.vision-library-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:8px;}
.vision-library-grid p{margin:0;border:1px solid rgba(0,0,0,.06);background:#f8fafc;border-radius:8px;padding:8px;font-size:12.5px;line-height:1.6;color:var(--text);}
.vision-library-grid b{display:block;color:#5a4a8a;font-size:11.5px;margin-bottom:2px;}
.vision-library-note{font-size:12.5px;color:var(--muted);line-height:1.65;margin:8px 0 0;border-top:1px dashed rgba(120,90,200,.18);padding-top:8px;}
@media (max-width:860px){
  .vision-mistake-layout{grid-template-columns:1fr;}
  .vision-mistake-summary{grid-template-columns:1fr 1fr;}
  .vision-detail-grid{grid-template-columns:1fr;}
  .vision-iteration-compare{grid-template-columns:1fr;}
  .vision-iteration-delta{min-width:0;}
  .vision-library-layout{grid-template-columns:1fr;}
  .vision-library-grid{grid-template-columns:1fr;}
  .vision-recommend-list{grid-template-columns:1fr;}
  .vision-remediation-steps,.vision-remediation-mini .vision-remediation-steps{grid-template-columns:1fr;}
  .vision-remediation-head{align-items:flex-start;flex-direction:column;}
  .vision-remediation-head span{text-align:left;}
}

/* ===== V2.2-I2g 视觉预批展示优化：防止文字/标签超框 ===== */
/* 说明：本段只处理展示层，不改变原有结构与功能。 */

.assign-precheck,
.vision-mistake-detail,
.vision-library-detail,
.vision-recommend-box,
.vision-remediation-path,
.vision-remediation-mini,
.assign-vision-history,
.vision-history-item,
.vision-mistake-row,
.vision-library-row {
  max-width: 100%;
  overflow: hidden;
}

.assign-precheck *,
.vision-mistake-detail *,
.vision-library-detail *,
.vision-recommend-box *,
.vision-remediation-path *,
.vision-remediation-mini *,
.assign-vision-history *,
.vision-history-item *,
.vision-mistake-row *,
.vision-library-row * {
  box-sizing: border-box;
  min-width: 0;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.vision-field,
.vision-next,
.precheck-comment,
.precheck-suggestion {
  max-width: 100%;
  overflow: hidden;
}

.vision-field > div,
.vision-field > span,
.vision-field > p,
.vision-next > div,
.vision-next > span,
.vision-next > p {
  min-width: 0;
  max-width: 100%;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.precheck-comment,
.vision-field:not(.warn) > :last-child {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.precheck-suggestion,
.vision-next > :last-child,
.vision-field.warn > :last-child {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.vision-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  max-width: 100%;
  overflow: hidden;
}

.vision-tags span {
  flex: 0 1 auto;
  max-width: 108px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  word-break: normal;
  overflow-wrap: normal;
}

.vision-tags.compact span,
.vision-history-body .vision-tags span,
.vision-mistake-row-body .vision-tags span,
.vision-library-row-body .vision-tags span {
  max-width: 88px;
}

.vision-remediation-step {
  min-width: 0;
  overflow: hidden;
}

.vision-remediation-step p {
  max-width: 100%;
  word-break: break-word;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.vision-remediation-step b {
  max-width: 100%;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.vision-recommend-item {
  min-width: 0;
  overflow: hidden;
}

.vision-recommend-item > div:first-child {
  min-width: 0;
}

.vision-recommend-item > div:first-child b {
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vision-recommend-item p {
  max-width: 100%;
  word-break: break-word;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.vision-mistake-row-body b,
.vision-mistake-row-body small,
.vision-mistake-row-body em,
.vision-library-row-body b,
.vision-library-row-body small,
.vision-library-row-body em,
.vision-history-body small,
.vision-history-body p {
  min-width: 0;
  max-width: 100%;
}

.vision-mistake-row-body em,
.vision-library-row-body em {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vision-detail-grid p,
.vision-library-grid p,
.vision-student-reflection p,
.vision-library-teacher p,
.vision-library-note {
  max-width: 100%;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.vision-detail-img,
.vision-iteration-card img,
.vision-library-detail img {
  max-width: 100%;
}

@media (max-width: 640px) {
  .vision-field {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .vision-next {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .vision-tags span {
    max-width: 86px;
  }

  .precheck-comment,
  .vision-field:not(.warn) > :last-child {
    -webkit-line-clamp: 5;
  }

  .vision-recommend-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .vision-recommend-head span {
    text-align: left;
  }
}

/* ===== V2.3-B 课次×情境启发层（增量样式，仅作用于 .le- 前缀） ===== */
.le-card{border:1px solid var(--line,#e3ddd2);border-radius:10px;padding:14px 16px;margin-top:12px;background:rgba(255,255,255,.55);font-size:13.5px;line-height:1.7;}
.le-card p{margin:4px 0;}
.le-card p b{display:inline-block;min-width:5em;color:var(--ink,#2b2722);margin-right:6px;}
.le-kicker{font-size:12px;letter-spacing:.12em;color:var(--gold,#a8833d);font-weight:700;margin-bottom:6px;}
.le-chips{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0;}
.le-chip{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border:1px solid var(--line,#e3ddd2);border-radius:999px;font-size:12.5px;background:#fff;cursor:default;}
.le-chip i{font-style:normal;color:var(--muted,#8a8275);font-size:11.5px;}
.le-scen-btn{cursor:pointer;}
.le-scen-btn.on{border-color:var(--gold,#a8833d);background:var(--gold,#a8833d);color:#fff;}
.le-scen-btn.on i{color:#fff;}
.le-chain{padding:8px 10px;background:rgba(168,131,61,.07);border-radius:8px;}
.le-role{color:var(--muted,#8a8275);font-size:12.5px;}
.le-weak{color:#9c5a2a;}
.le-principle-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:8px;}
.le-principle b{font-size:14px;margin-right:6px;}
.le-principle i{font-style:normal;color:var(--gold,#a8833d);font-size:12px;}
.le-principle .le-q{color:var(--muted,#8a8275);font-size:12.5px;}
.le-evidence ul{margin:6px 0 0 18px;padding:0;}
.le-evidence li{margin:3px 0;}
.le-min{color:var(--muted,#8a8275);font-size:12.5px;}
.le-repair textarea{width:100%;min-height:54px;margin-top:8px;border:1px solid var(--line,#e3ddd2);border-radius:8px;padding:8px 10px;font-size:13px;font-family:inherit;resize:vertical;background:#fff;}
.le-q{color:var(--ink,#2b2722);}
@media (max-width:640px){.le-principle-grid{grid-template-columns:1fr;}}

/* V2.3-C 视觉反馈增强段 */
.le-vision-principle,.le-vision-scen,.le-vision-repair{margin-top:10px;}
.vision-feedback-block{margin:10px 0;padding:10px 12px;border:1px solid var(--line,#e3ddd2);border-radius:10px;background:#fff;}
.vision-feedback-block>b{display:block;margin-bottom:5px;font-size:13px;color:var(--ink,#2b2722);}
.vision-feedback-block ul{margin:0;padding-left:18px;font-size:12.8px;line-height:1.7;color:var(--text,#4f493f);}
.vision-feedback-block li+li{margin-top:3px;}
.vision-evidence-block{border-left:3px solid #5d87aa;background:rgba(93,135,170,.05);}
.vision-problem-block{border-left:3px solid #b98635;background:rgba(185,134,53,.06);}
.vision-feedback-actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:12px 0 8px;padding-top:10px;border-top:1px dashed var(--line,#e3ddd2);}
.vision-feedback-actions span{flex:1 1 220px;font-size:12px;color:var(--muted,#8a8275);line-height:1.5;}
.vision-usability-survey{margin:10px 0;border:1px solid #dbeafe;background:#f8fbff;border-radius:10px;padding:9px 11px;}
.vision-usability-survey summary{cursor:pointer;color:#1d4ed8;font-size:12.5px;font-weight:800;}
.vision-usability-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:10px 0;}
.vision-usability-grid label{display:grid;gap:5px;color:#475569;font-size:11.5px;font-weight:700;}
.vision-usability-grid select{height:32px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:#334155;padding:0 8px;}
.vision-usability-survey>[data-usability-status]{margin-left:8px;color:#64748b;font-size:11.5px;}
.le-case-detail{margin:10px 0;padding:10px 12px;border:1px dashed var(--line,#e3ddd2);border-radius:10px;font-size:13px;}
.le-beforeafter{display:flex;gap:10px;margin-top:8px;}
.le-beforeafter>div{flex:1;text-align:center;}
.le-beforeafter span{display:block;font-size:12px;color:var(--muted,#8a8275);margin-bottom:4px;}
.le-beforeafter img{width:100%;border-radius:8px;border:1px solid var(--line,#e3ddd2);}
@media (max-width:640px){.vision-feedback-actions .btn{flex:1 1 130px;}.vision-feedback-actions span{flex-basis:100%;}.vision-usability-grid{grid-template-columns:1fr;}}

/* ===== V2.7.1A-1 responsive workbench polish ===== */
@media (max-width:480px){
  body{font-size:15px;}
  body{padding-bottom:calc(96px + env(safe-area-inset-bottom));}
  .wrap{width:min(100%,100% - 24px);}
  .hero{padding:50px 18px 64px;}
  .hero h1{font-size:1.68em;}
  .hero .sub,.sec-head p,.mode-card p,.scenario-example{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .hero-entry-grid{grid-template-columns:1fr;gap:10px;margin-top:18px;}
  .hero-entry-card{padding:13px 14px;border-radius:14px;}
  .hero-entry-card b{font-size:15px;}
  .hero-entry-card span{font-size:12.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .hero-actions{margin-top:16px;}
  section.block{padding:32px 0 6px;}
  .sec-head{margin-bottom:16px;}
  .card{padding:18px;}
  .mode-pick{grid-template-columns:1fr;gap:12px;}
  .mode-card{border-radius:16px;padding:20px;}
  .mode-card .mc-ico{font-size:32px;margin-bottom:8px;}
  .mode-card h3{font-size:1.2em;}
  .mode-card-action{width:100%;min-height:46px;}
  .scenario-map-grid{display:none;}
  .scenario-chain{font-size:12.5px;overflow-wrap:anywhere;}
  .flow-inner{overflow-x:hidden;display:grid;grid-template-columns:1fr;gap:8px;}
  .res-grid{grid-template-columns:1fr;}
  .workbench-guide{padding:14px;border-radius:16px;}
  .workbench-head{display:block;}
  .workbench-current{display:inline-flex;margin-top:8px;border-radius:12px;}
  .workbench-steps{display:none;}
  .workbench-mobile-nav{display:block;}
  .student-workspace-nav{position:fixed;left:8px;right:8px;bottom:8px;bottom:calc(8px + env(safe-area-inset-bottom));z-index:2050;margin:0;padding:8px;border-radius:18px;box-shadow:0 14px 36px rgba(30,41,59,.22);}
  .workspace-nav-head{display:none;}
  .workspace-nav-items{grid-template-columns:repeat(5,1fr);gap:5px;}
  .workspace-nav-item{min-height:52px;padding:6px 2px;text-align:center;border-radius:12px;}
  .workspace-nav-item b{font-size:12px;margin:0;}
  .workspace-nav-item span,.workspace-nav-item small{display:none;}
  .workspace-task-panel{padding:14px;border-radius:16px;margin-bottom:12px;scroll-margin-top:12px;}
  .workspace-task-panel h3{font-size:1.05em;}
  .workspace-task-problem{font-size:13.5px;padding:9px 10px;}
  .workspace-task-why,.workspace-task-now{grid-template-columns:1fr;gap:3px;padding:9px 10px;}
  .workspace-task-actions{display:grid;grid-template-columns:1fr;gap:8px;}
  .workspace-task-primary,.workspace-task-secondary{width:100%;min-height:46px;}
  .knowledge-card{padding:14px;overflow:visible;max-height:none;}
  .knowledge-card .rtitle,.knowledge-card .rmeta,.knowledge-card .kc-action-section,.knowledge-card .kc-feedback{overflow:visible;max-height:none;display:block;-webkit-line-clamp:unset;-webkit-box-orient:initial;}
  .knowledge-card .rtitle{font-size:15px;line-height:1.45;}
  .knowledge-card .kc-reason{font-size:12.5px;line-height:1.65;}
  .kc-action-section{padding:10px;overflow:visible;max-height:none;}
  .kc-action-section p,.kc-action-section li{font-size:13.2px;line-height:1.7;}
  .kc-actions,.kc-feedback-actions,.kc-feedback-reasons{display:flex;flex-wrap:wrap;gap:8px;}
  .kc-actions .btn,.kc-feedback-actions button,.kc-feedback-reasons button{min-height:44px;flex:1 1 150px;justify-content:center;text-align:center;}
  .kc-actions [data-kc-revision-toggle]{flex-basis:100%;font-size:14px;min-height:48px;box-shadow:0 8px 18px rgba(245,179,1,.28);}
  .kc-feedback-reasons span{flex-basis:100%;}
  .kc-panel-mask{padding:10px;}
  .kc-panel{max-height:92vh;padding:18px;border-radius:16px;}
  .kc-detail-grid{grid-template-columns:1fr;}
  .kc-panel-actions{display:grid;grid-template-columns:1fr;gap:8px;}
  .kc-media-item{flex-direction:column;}
  .kc-media-item img,img,video,canvas{max-width:100%;height:auto;}
  textarea,input,select,button{max-width:100%;}
  .help-float{bottom:calc(88px + env(safe-area-inset-bottom));}
  .toast{bottom:calc(92px + env(safe-area-inset-bottom));}
}

@media (min-width:481px) and (max-width:767px){
  body{padding-bottom:calc(96px + env(safe-area-inset-bottom));}
  .wrap{width:min(100%,100% - 32px);}
  .hero .sub,.sec-head p,.mode-card p,.scenario-example{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .hero-entry-grid{grid-template-columns:1fr;gap:10px;}
  section.block{padding:38px 0 6px;}
  .mode-pick{grid-template-columns:1fr;gap:14px;}
  .mode-card{padding:24px;}
  .mode-card-action{min-height:46px;}
  .scenario-map-grid{display:none;}
  .res-grid{grid-template-columns:1fr;}
  .workbench-steps{display:none;}
  .workbench-mobile-nav{display:block;}
  .student-workspace-nav{position:fixed;left:10px;right:10px;bottom:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:2050;margin:0;padding:8px;border-radius:18px;box-shadow:0 14px 36px rgba(30,41,59,.22);}
  .workspace-nav-head{display:none;}
  .workspace-nav-items{grid-template-columns:repeat(5,1fr);gap:6px;}
  .workspace-nav-item{min-height:52px;padding:7px 4px;text-align:center;}
  .workspace-nav-item b{font-size:12px;margin:0;}
  .workspace-nav-item span,.workspace-nav-item small{display:none;}
  .workspace-task-panel{scroll-margin-top:14px;}
  .workspace-task-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
  .workspace-task-primary,.workspace-task-secondary{min-height:46px;}
  .knowledge-card{overflow:visible;max-height:none;}
  .knowledge-card .rtitle,.knowledge-card .rmeta,.knowledge-card .kc-action-section,.knowledge-card .kc-feedback{overflow:visible;max-height:none;display:block;-webkit-line-clamp:unset;-webkit-box-orient:initial;}
  .kc-actions [data-kc-revision-toggle]{flex-basis:100%;font-size:14px;min-height:48px;box-shadow:0 8px 18px rgba(245,179,1,.28);}
  .kc-feedback-actions button,.kc-feedback-reasons button{min-height:44px;}
  .kc-panel{max-height:90vh;}
  img,video,canvas{max-width:100%;height:auto;}
  .help-float{bottom:calc(90px + env(safe-area-inset-bottom));}
  .toast{bottom:calc(94px + env(safe-area-inset-bottom));}
}

@media (min-width:768px) and (max-width:1023px){
  .mode-pick{grid-template-columns:1fr;gap:16px;}
  .res-grid{grid-template-columns:1fr;}
  .workbench-steps{grid-template-columns:repeat(2,1fr);}
  .workspace-nav-items{grid-template-columns:repeat(5,minmax(0,1fr));}
  .workspace-nav-item small{display:none;}
  .kc-panel{width:min(720px,96vw);}
}

@media (min-width:1024px) and (max-width:1279px){
  .res-grid{grid-template-columns:repeat(2,minmax(280px,1fr));}
  .workbench-steps{grid-template-columns:repeat(5,1fr);}
}

@media (min-width:1280px){
  .res-grid{grid-template-columns:repeat(auto-fill,minmax(292px,1fr));}
  .knowledge-card{min-width:0;}
}