:root{--p:#5b3df5;--p2:#7b6cff;--blue:#4a9dff;--ink:#241a57;--muted:#8f89aa;--bg:#f7f6ff;--card:#fff;--line:#ebe7ff;--mint:#36c99a;--orange:#ffab45;--red:#ff637f;--r:28px;--shadow:0 14px 40px rgba(73,53,168,.09);--nav-h:84px}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#fbfaff 0%,#f4f2ff 48%,#f8f7ff 100%);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
.portal{max-width:520px;margin:auto;min-height:100vh;padding:18px 18px calc(var(--nav-h) + 24px)}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:4px 2px 18px}
.eyebrow{font-size:11px;color:var(--p);font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.title{font-size:26px;font-weight:900;letter-spacing:-.3px}
.avatar{width:44px;height:44px;border-radius:16px;background:linear-gradient(135deg,#6a4df8,#54a6ff);color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 8px 18px rgba(91,61,245,.22)}
.hero{border-radius:32px;padding:22px 20px;background:linear-gradient(145deg,#8A4DFF 0%,#5B5BFF 48%,#2F7BFF 100%);color:#fff;box-shadow:0 18px 48px rgba(91,61,245,.24);position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(rgba(255,255,255,.34) 1.1px,transparent 1.2px);background-size:16px 16px;-webkit-mask-image:linear-gradient(135deg,#000 0 38%,transparent 68%);mask-image:linear-gradient(135deg,#000 0 38%,transparent 68%);opacity:.55}
.hero:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.1);right:-50px;top:-70px}
.hero>*{position:relative;z-index:1}
.hero-compact h1{font-size:24px;margin:6px 0 8px}
.hero h1{font-size:26px;margin:4px 0 8px;line-height:1.15}
.hero p{margin:0;opacity:.88;line-height:1.6;font-size:13px}
.hero-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:16px}
.hero-stat{background:rgba(255,255,255,.16);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.2);border-radius:18px;padding:11px 8px;text-align:center}
.hero-stat b{display:block;font-size:20px;font-weight:900;font-variant-numeric:tabular-nums;line-height:1.1}
.hero-stat span{display:block;margin-top:4px;font-size:10px;opacity:.86;font-weight:700}
.section{margin-top:22px}
.section-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px;gap:10px}
.section-title{font-weight:900;font-size:18px;letter-spacing:-.2px}
.sub{font-size:12px;color:var(--muted);line-height:1.5}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}
.card-soft{background:linear-gradient(180deg,#fff,#faf9ff)}
.score-head{display:flex;align-items:baseline;gap:6px;margin-bottom:14px}
.score-head b{font-size:32px;font-weight:900;color:var(--p);line-height:1;font-variant-numeric:tabular-nums}
.score-head span{font-size:14px;font-weight:800;color:var(--muted)}
.score-metric{margin:12px 0 14px}
.score-metric-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:800;margin-bottom:6px}
.score-metric-head strong{color:var(--p);font-variant-numeric:tabular-nums}
.score-metric small{display:block;margin-top:4px;color:var(--muted);font-size:11px;line-height:1.45}
.action-list{display:grid;gap:10px}
.action{display:flex;align-items:center;gap:12px;padding:14px 14px 14px 12px;border-radius:22px;background:#fff;border:1px solid var(--line);cursor:pointer;transition:transform .15s,box-shadow .15s,border-color .15s;box-shadow:0 8px 24px rgba(73,53,168,.05)}
.action:active{transform:scale(.985)}
.action-high{border-color:#ffd6de;background:linear-gradient(180deg,#fff,#fff8fa)}
.action-mid{border-color:#ffe8c8;background:linear-gradient(180deg,#fff,#fffcf7)}
.action-low{border-color:#e8fbf3;background:linear-gradient(180deg,#fff,#f8fffc)}
.action .ico{width:44px;height:44px;border-radius:15px;display:grid;place-items:center;font-weight:900;font-size:16px;font-variant-numeric:tabular-nums;flex-shrink:0}
.action-high .ico{background:#ffecef;color:#e94d6c}
.action-mid .ico{background:#fff4df;color:#d98517}
.action-low .ico{background:#e9fbf4;color:#1aa777}
.action .body{flex:1;min-width:0}
.action b{display:block;font-size:14px;line-height:1.3}
.action small{display:block;margin-top:3px;color:var(--muted);font-size:11px;line-height:1.4}
.count{color:#b8b2cc;font-size:18px;font-weight:700;padding-right:2px;flex-shrink:0}
.todo-item{display:flex;align-items:flex-start;gap:12px;padding:14px;border-radius:20px;background:#fff;border:1px solid var(--line);cursor:pointer;border-left:4px solid var(--p);box-shadow:0 8px 22px rgba(73,53,168,.05)}
.todo-item .ico{width:28px;height:28px;border-radius:10px;background:#f0edff;color:var(--p);display:grid;place-items:center;font-weight:900;font-size:14px;flex-shrink:0;margin-top:1px}
.todo-item .body b{font-size:13px;line-height:1.45}
.step-row{display:grid;grid-template-columns:52px 1fr 40px;gap:10px;align-items:center;margin:12px 0}
.step-row:first-child{margin-top:4px}
.step-row:last-child{margin-bottom:4px}
.step-label{font-size:12px;font-weight:900;color:var(--ink)}
.step-row em{font-style:normal;font-size:11px;font-weight:800;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.bar{height:9px;border-radius:99px;background:#eeebf8;overflow:hidden}
.bar-v2{height:10px;background:#f0edf9}
.bar span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--p),var(--blue));transition:width .35s ease}
.bar-good span{background:linear-gradient(90deg,#34d399,#10b981)}
.bar-mid span{background:linear-gradient(90deg,#ffb347,#ff8c42)}
.bar-warn span{background:linear-gradient(90deg,#ff8fa3,#ff637f)}
.bar-empty span{width:0!important;background:#e8e4f4}
.chips{display:flex;gap:8px;overflow:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
.chip{border:1px solid var(--line);background:#fff;color:var(--muted);padding:8px 14px;border-radius:999px;white-space:nowrap;font-size:12px;font-weight:700;cursor:pointer;transition:all .15s}
.chip.active{background:linear-gradient(100deg,#5B3DF5,#4A9DFF);color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(91,61,245,.22)}
.student{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid #f0edfa;cursor:pointer;transition:background .12s}
.student:last-child{border-bottom:0}
.student:active{background:#faf8ff;margin:0 -8px;padding-left:8px;padding-right:8px;border-radius:16px}
.student .face{width:44px;height:44px;border-radius:16px;background:linear-gradient(145deg,#eeeaff,#f5f2ff);display:grid;place-items:center;color:var(--p);font-weight:900;flex-shrink:0}
.student .meta{flex:1;min-width:0}
.student small{color:var(--muted);font-size:11px;line-height:1.45}
.tag{padding:6px 10px;border-radius:999px;font-size:11px;font-weight:800;white-space:nowrap}
.ok{background:#e9fbf4;color:#1aa777}.warn{background:#fff4df;color:#d98517}.bad{background:#ffecef;color:#e94d6c}
.btn{border:0;border-radius:999px;padding:13px 18px;font-weight:900;cursor:pointer;font-size:13px;transition:transform .12s,opacity .12s}
.btn:active{transform:scale(.98)}
.btn-primary{background:linear-gradient(100deg,var(--p),var(--blue));color:#fff;box-shadow:0 10px 24px rgba(91,61,245,.22)}
.btn-ghost{background:#f1eeff;color:var(--p)}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.metric{text-align:center;padding:12px 7px;border-radius:18px;background:#f8f7ff}
.metric b{display:block;font-size:18px}.metric small{font-size:10px;color:var(--muted)}
.word-row{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid #f0edfa}
.word-row:last-child{border-bottom:0}
.word{font-weight:900;font-size:14px}
.word small{display:block;font-weight:500;color:var(--muted);font-size:11px;margin-top:2px}
.lesson-card{display:flex;align-items:center;gap:14px}
.lesson-card .ico{width:52px;height:52px;border-radius:18px;background:linear-gradient(145deg,#eeeaff,#f5f2ff);display:grid;place-items:center;color:var(--p);font-weight:900;font-size:15px;flex-shrink:0}
.lesson-card .body{flex:1;min-width:0}
.timeline{border-left:2px solid #e3ddff;margin-left:8px;padding-left:18px}
.timeline-item{position:relative;margin:0 0 18px}
.timeline-item:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--p);left:-24px;top:5px;box-shadow:0 0 0 5px #eeeaff}
.timeline-item small{color:var(--muted)}
.nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:min(520px,100%);height:var(--nav-h);background:rgba(255,255,255,.97);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);z-index:200;padding:8px 6px calc(8px + env(safe-area-inset-bottom));box-shadow:0 -8px 32px rgba(73,53,168,.1);pointer-events:auto}
.nav-item{text-decoration:none;color:#aaa3bd;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:4px 2px;border-radius:16px;transition:color .15s,background .15s;min-height:48px;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation;user-select:none}
.nav-item.active{color:var(--p);font-weight:900;background:rgba(91,61,245,.06)}
.nav-icon-wrap{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;transition:background .15s,transform .15s}
.nav-item.active .nav-icon-wrap{background:linear-gradient(145deg,#eeeaff,#f5f2ff);box-shadow:0 4px 12px rgba(91,61,245,.12)}
.nav-icon{font-style:normal;font-size:17px;line-height:1}
.nav-label{font-size:10px;font-weight:800;letter-spacing:.2px}
.empty{text-align:center;padding:28px 16px;color:var(--muted);font-size:13px;line-height:1.55}
.settings-list{display:grid;gap:10px}
.settings-item{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:22px;background:#fff;border:1px solid var(--line);text-decoration:none;color:inherit;box-shadow:0 8px 22px rgba(73,53,168,.05);transition:transform .12s}
.settings-links .settings-item{cursor:pointer}
.settings-item:active{transform:scale(.985)}
.settings-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;font-weight:900;color:#fff;flex-shrink:0;font-size:15px}
.si-purple{background:linear-gradient(135deg,#7a4dff,#5b3df5)}
.si-blue{background:linear-gradient(135deg,#4a9dff,#2f7bff)}
.si-teal{background:linear-gradient(135deg,#34d399,#10b981)}
.si-orange{background:linear-gradient(135deg,#ffb347,#ff8c42)}
.settings-body{flex:1;min-width:0}
.settings-body b{display:block;font-size:14px}
.settings-body small{display:block;margin-top:3px;color:var(--muted);font-size:11px}
.settings-arrow{color:#c4bdd8;font-size:20px;font-weight:700}
.about-card{text-align:center;padding:20px;color:var(--muted)}
.about-card b{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}
.about-card small{font-size:11px}
.lesson-row{display:flex;align-items:center;gap:14px;margin-bottom:10px;padding:14px 16px}
.lesson-badge{width:48px;height:48px;border-radius:16px;background:#f4f3f8;display:grid;place-items:center;color:#aaa;font-weight:900;flex-shrink:0}
.lesson-badge.on{background:linear-gradient(145deg,#eeeaff,#f5f2ff);color:var(--p)}
.lesson-body{flex:1;min-width:0}
.modal-mask{position:fixed;inset:0;background:rgba(34,24,80,.28);display:none;place-items:end center;z-index:50}
.modal-mask.show{display:grid}
.sheet{width:min(520px,100%);background:#fff;border-radius:30px 30px 0 0;padding:22px}
.sheet textarea{width:100%;min-height:100px;border:1px solid var(--line);border-radius:18px;padding:14px;font:inherit;resize:none}
.toast{position:fixed;top:18px;left:50%;transform:translateX(-50%);background:#271c54;color:#fff;padding:11px 16px;border-radius:999px;font-size:13px;z-index:99;display:none;box-shadow:0 10px 28px rgba(39,28,84,.28)}
.toast.show{display:block}
.child-switch{display:flex;gap:8px;overflow:auto;padding-bottom:4px;margin:0 0 12px}
.invite-code{font-size:28px;font-weight:900;letter-spacing:6px;color:var(--p);text-align:center;margin:8px 0}
.field-row{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.field-row input{flex:1;min-width:140px;padding:12px 14px;border-radius:14px;border:1px solid var(--line);font-size:15px;background:#faf9ff}
.btn-block{width:100%;margin-top:10px}
.hot-empty{padding:8px 4px;color:var(--muted);font-size:13px;text-align:center;line-height:1.55}
/* —— 老师端 · 学生诊断页 —— */
.portal.dx-page{padding-bottom:36px}
.dx-page .topbar{padding-bottom:10px}
.dx-sync{
  display:flex;gap:10px;align-items:flex-start;margin:0 0 14px;padding:11px 13px;
  border-radius:16px;border:1px solid #e8e3ff;background:linear-gradient(135deg,#f8f6ff,#f3f7ff);
  font-size:12px;line-height:1.55;color:#6a6488
}
.dx-sync b{color:#5b3df5;font-weight:900}
.dx-sync-ico{
  flex-shrink:0;width:28px;height:28px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(145deg,#7b6cff,#4a9dff);color:#fff;font-size:13px;font-weight:900
}
.dx-hero{margin-bottom:4px}
.dx-hero .hero-label{font-size:11px;font-weight:800;letter-spacing:.06em;opacity:.9;text-transform:uppercase}
.dx-hero h1{font-size:24px;margin:8px 0 0}
.dx-section{margin-top:16px}
.dx-section .section-head{margin-bottom:8px;align-items:center}
.dx-section .section-title{font-size:15px;font-weight:900}
.dx-section .sub{font-size:11px;font-weight:700}
.dx-card{padding:14px;border-radius:22px;box-shadow:0 8px 24px rgba(73,53,168,.06)}
.dx-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.dx-metrics.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.dx-metric{
  text-align:center;padding:12px 8px;border-radius:16px;
  background:linear-gradient(180deg,#faf9ff,#f4f2ff);border:1px solid #efeafc
}
.dx-metric b{display:block;font-size:20px;font-weight:900;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--ink)}
.dx-metric span{display:block;margin-top:5px;font-size:10px;font-weight:800;color:var(--muted)}
.dx-metric.is-accent{background:linear-gradient(145deg,#eeeaff,#e8f3ff);border-color:#e0d8ff}
.dx-metric.is-accent b{color:var(--p)}
.dx-panel{margin-top:12px;padding-top:12px;border-top:1px dashed #ebe6fa}
.dx-panel-title{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  margin:0 0 8px;font-size:12px;font-weight:900;color:#5a5278
}
.dx-panel-title span{font-size:10px;font-weight:800;color:var(--muted)}
.dx-feed{display:grid;gap:6px}
.dx-feed-item{
  display:grid;grid-template-columns:36px 1fr auto;gap:10px;align-items:center;
  padding:10px 11px;border-radius:14px;background:#f8f7fc;border:1px solid #f0edf8
}
.dx-feed-item.credit .dx-feed-amt{color:#1aa777}
.dx-feed-item.debit .dx-feed-amt{color:#e94d6c}
.dx-feed-ico{
  width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  font-size:14px;font-weight:900;color:#fff;background:linear-gradient(135deg,#7b6cff,#4a9dff)
}
.dx-feed-item.debit .dx-feed-ico{background:linear-gradient(135deg,#ff8a9a,#ff637f)}
.dx-feed-body{min-width:0}
.dx-feed-body b{display:block;font-size:13px;font-weight:850;line-height:1.25;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dx-feed-body small{display:block;margin-top:2px;font-size:10px;color:var(--muted);font-weight:600}
.dx-feed-amt{font-size:14px;font-weight:900;font-variant-numeric:tabular-nums;white-space:nowrap}
.dx-feed-item--wide{grid-template-columns:36px 1fr}
.dx-empty-soft{
  text-align:center;padding:16px 10px;border-radius:14px;background:#f7f6fc;
  color:var(--muted);font-size:12px;line-height:1.5
}
.dx-word-row{
  display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:8px;
  padding:11px 0;border-bottom:1px solid #f1eef8
}
.dx-word-row:last-child{border-bottom:0}
.dx-word-row .word{font-size:13px}
.dx-word-row .word small{font-size:10px}
.dx-word-row b{font-size:13px;font-variant-numeric:tabular-nums;color:var(--p)}
.dx-login-grid{display:grid;gap:8px;margin-top:4px}
.dx-kv{
  display:flex;justify-content:space-between;align-items:flex-start;gap:12px;
  padding:10px 12px;border-radius:14px;background:#f8f7fc;border:1px solid #f0edf8
}
.dx-kv span{font-size:11px;font-weight:800;color:var(--muted);flex-shrink:0}
.dx-kv b,.dx-kv a{font-size:12px;font-weight:800;color:var(--ink);text-align:right;word-break:break-all;line-height:1.4}
.dx-kv a{color:var(--p);text-decoration:none}
.dx-invite{
  margin:10px 0 12px;padding:14px 12px;border-radius:18px;text-align:center;
  background:linear-gradient(145deg,#f4f1ff,#eef5ff);border:1px dashed #dcd4ff
}
.dx-invite .invite-code{margin:0;font-size:26px;letter-spacing:8px}
.dx-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}
.dx-actions .btn{width:100%;margin:0;padding:12px 10px;font-size:12px}
.dx-select{
  width:100%;padding:11px 12px;border-radius:14px;border:1px solid var(--line);
  background:#faf9ff;font:inherit;font-size:13px;font-weight:700;color:var(--ink)
}
.dx-field-row{display:flex;gap:8px;align-items:stretch;margin-top:10px}
.dx-field-row .dx-select{flex:1}
.dx-field-row .btn{margin:0;padding:0 16px;white-space:nowrap}
@media(max-width:380px){
  .title{font-size:23px}.hero h1{font-size:22px}.action .ico{width:40px;height:40px;font-size:14px}
  .dx-metrics.cols-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
  .dx-metric b{font-size:17px}
  .dx-feed-item{grid-template-columns:32px 1fr auto;padding:9px 10px}
  .dx-feed-item--wide{grid-template-columns:32px 1fr}
}