:root{
  --bg:#f5f7fc;
  --surface:#fff;
  --ink:#1f2b48;
  --ink2:#56637f;
  --muted:#8d98af;
  --line:#e7ecf6;
  --primary:#5b6cf9;
  --primary-d:#4757e6;
  --primary-soft:#eef0ff;
  --mint:#20bfa4;
  --mint-soft:#e6f9f5;
  --orange:#ff9f5a;
  --orange-soft:#fff2e8;
  --shadow:0 12px 34px rgba(35,55,110,.08);
  --shadow-sm:0 4px 16px rgba(35,55,110,.06);
  --r:18px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;
  line-height:1.65;
  min-height:100vh;
}
button,input,textarea,select{font-family:inherit}
button{cursor:pointer}
.hidden{display:none !important}
.muted{color:var(--muted)}
.pc-only{display:inline}

/* ---------- topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  max-width:1160px;margin:0 auto;padding:11px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.brand{display:flex;align-items:center;gap:10px;background:none;border:0;padding:0;color:var(--ink);text-align:left}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#8a7cfb);color:#fff;font-size:20px;
  box-shadow:0 6px 14px rgba(91,108,249,.32);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.3px;line-height:1.2}
.brand-text small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:1px;margin-top:2px}
.topbar-right{display:flex;align-items:center;gap:9px}
.name-chip{
  border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:7px 14px;font-size:13px;color:var(--ink2);font-weight:600;
}
.name-chip:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- buttons ---------- */
.btn{
  border:0;border-radius:12px;padding:10px 18px;font-size:14px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-primary{background:linear-gradient(135deg,var(--primary),#7b6dfa);color:#fff;box-shadow:0 6px 16px rgba(91,108,249,.28)}
.btn-primary:hover{box-shadow:0 9px 22px rgba(91,108,249,.36)}
.btn-outline{background:#fff;color:var(--primary);border:1.5px solid #d9dffb}
.btn-outline:hover{border-color:var(--primary);background:var(--primary-soft)}
.btn-ghost{background:transparent;color:var(--ink2);border:1px solid var(--line)}
.btn-ghost:hover{background:#fff;border-color:#cfd8ec}
.btn-lg{padding:13px 24px;font-size:15px;border-radius:14px}
.btn-block{width:100%;margin-top:18px}
.btn-finish{
  width:100%;background:var(--mint-soft);color:#0e8f7b;border:1.5px solid #bceee3;
  font-weight:700;border-radius:12px;padding:11px;font-size:13px;
}
.btn-finish:hover{background:#d4f6ef}
.link-btn{background:none;border:0;color:var(--primary);font-size:13px;font-weight:600;margin-top:16px;padding:6px}
.link-btn:hover{text-decoration:underline}
.back-link{background:none;border:0;color:var(--muted);font-size:13px;font-weight:600;padding:6px 0}
.back-link:hover{color:var(--primary)}

/* ---------- layout ---------- */
.wrap{max-width:1160px;margin:0 auto;padding:28px 22px 70px}
.step{animation:fadeUp .35s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- hero / upload ---------- */
.hero{text-align:center;padding:34px 10px 26px;position:relative}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none}
.hero::before{width:70px;height:70px;background:#ffe9d5;left:8%;top:22px;opacity:.7}
.hero::after{width:46px;height:46px;background:#dff5ef;right:10%;bottom:18px;opacity:.8}
.hero-badge{
  display:inline-block;background:var(--primary-soft);color:var(--primary-d);
  font-size:12px;font-weight:700;padding:6px 15px;border-radius:999px;margin-bottom:16px;
}
.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.28;margin:0 0 14px;letter-spacing:-.5px;font-weight:800}
.hero .hl{color:var(--primary);position:relative}
.hero .hl::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;background:#ffe1a8;z-index:-1;border-radius:6px}
.hero-sub{color:var(--ink2);font-size:15px;margin:0}

.upload-card{
  background:var(--surface);border:2px dashed #cfd9f5;border-radius:24px;
  padding:42px 24px 30px;text-align:center;box-shadow:var(--shadow);
  max-width:720px;margin:8px auto 0;transition:border-color .2s,background .2s;
}
.upload-card.dragover{border-color:var(--primary);background:var(--primary-soft)}
.upload-icon{
  width:74px;height:74px;margin:0 auto 14px;border-radius:22px;display:grid;place-items:center;
  font-size:34px;background:linear-gradient(135deg,#eef0ff,#e7f8f4);
}
.upload-card h2{margin:0 0 6px;font-size:22px}
.upload-card p{margin:0 0 22px;font-size:14px}
.upload-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.upload-hint{font-size:12px;color:var(--muted);margin-top:16px}

.howto{
  max-width:760px;margin:26px auto 0;display:flex;align-items:center;justify-content:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 20px;box-shadow:var(--shadow-sm);
}
.howto-item{display:flex;align-items:center;gap:9px;flex:1;justify-content:center}
.howto-num{width:26px;height:26px;border-radius:9px;background:var(--primary-soft);color:var(--primary-d);display:grid;place-items:center;font-size:13px;font-weight:800;flex:none}
.howto-item b{font-size:13px}
.howto-item small{color:var(--muted);font-size:12px}
.howto-arrow{color:#c7d0e6;font-size:17px}

/* ---------- confirm ---------- */
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.step-tag{font-size:12px;font-weight:700;color:var(--primary-d);background:var(--primary-soft);padding:5px 13px;border-radius:999px}
.section-title{font-size:26px;margin:10px 0 4px;font-weight:800}
.section-desc{color:var(--ink2);font-size:14px;margin:0 0 22px}
.wave{font-size:22px}
.confirm-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.photo-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px;box-shadow:var(--shadow-sm);
}
.photo-panel img{width:100%;max-height:340px;object-fit:contain;border-radius:12px;background:#f7f9fd;border:1px solid var(--line);display:block}
.photo-label{text-align:center;font-size:12px;color:var(--muted);padding-top:9px}
.confirm-form{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow-sm)}
.field-label{display:block;font-size:13px;font-weight:700;margin-bottom:9px}
.field-label .tip{font-weight:500;color:var(--muted);font-size:12px}
#questionInput{
  width:100%;border:1.5px solid var(--line);border-radius:12px;padding:14px;font-size:16px;
  line-height:1.8;color:var(--ink);resize:vertical;background:#fbfcff;outline:none;
}
#questionInput:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(91,108,249,.1)}
.meta-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.meta-pill{font-size:12px;font-weight:600;color:var(--ink2);background:#f2f5fc;border-radius:999px;padding:5px 12px}
.notice{font-size:12px;color:var(--orange);margin:10px 0 0}
.recognizing{text-align:center;padding:50px 10px;color:var(--ink2)}
.recognizing span{display:block;font-weight:700;font-size:16px;margin-top:12px}
.recognizing small{display:block;color:var(--muted);font-size:12px;margin-top:4px}
.dots{display:flex;gap:7px;justify-content:center}
.dots i{width:10px;height:10px;border-radius:50%;background:var(--primary);animation:bounce 1s infinite ease-in-out}
.dots i:nth-child(2){animation-delay:.15s}
.dots i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,80%,100%{transform:translateY(0);opacity:.45}40%{transform:translateY(-9px);opacity:1}}

/* ---------- chat ---------- */
.chat-shell{
  display:grid;grid-template-columns:300px 1fr;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;
  box-shadow:var(--shadow);min-height:640px;
}
.chat-side{
  background:linear-gradient(180deg,#f8faff,#f3f7ff);border-right:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:12px;
}
.side-title{font-size:13px;font-weight:800;color:var(--ink2)}
.side-photo{width:100%;max-height:160px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:12px}
.side-question{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px;
  font-size:14px;line-height:1.75;max-height:150px;overflow:auto;
}
.side-meta{display:flex;gap:6px;flex-wrap:wrap}
.side-meta span{font-size:11px;background:var(--primary-soft);color:var(--primary-d);padding:4px 9px;border-radius:999px;font-weight:600}
.side-tip{background:#fff8ec;border:1px solid #ffe4bd;border-radius:12px;padding:12px;font-size:12px;color:#8a6734;margin-top:auto}
.side-tip b{display:block;margin-bottom:4px}
.side-tip p{margin:0;line-height:1.7}
.chat-main{display:flex;flex-direction:column;min-width:0}
.chat-head{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px 20px;border-bottom:1px solid var(--line);
}
.chat-head-left{display:flex;align-items:center;gap:10px}
.avatar{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#ffe6c9,#ffd0a6);display:grid;place-items:center;font-size:20px}
.chat-head-left b{font-size:14px;display:block;line-height:1.3}
.chat-head-left small{font-size:11px;color:var(--muted)}
.mode-switch{display:flex;background:#f1f4fb;border-radius:999px;padding:3px;gap:2px}
.mode-btn{border:0;background:transparent;color:var(--muted);font-size:11px;font-weight:700;padding:6px 11px;border-radius:999px}
.mode-btn.active{background:#fff;color:var(--primary-d);box-shadow:0 2px 8px rgba(40,60,110,.1)}

.messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px;min-height:340px;max-height:480px;background:#fcfdff}
.day-divider{text-align:center;font-size:11px;color:var(--muted);margin-bottom:2px}
.msg{display:flex;gap:9px;max-width:82%;animation:fadeUp .25s ease both}
.msg.user{align-self:flex-end;flex-direction:row-reverse}
.msg-avatar{width:30px;height:30px;border-radius:10px;flex:none;display:grid;place-items:center;font-size:15px;background:#ffecd7}
.msg.user .msg-avatar{background:var(--primary-soft)}
.bubble{
  padding:11px 15px;border-radius:16px;font-size:14px;line-height:1.8;white-space:pre-wrap;word-break:break-word;
  background:#fff;border:1px solid var(--line);border-top-left-radius:5px;box-shadow:var(--shadow-sm);
}
.msg.user .bubble{
  background:linear-gradient(135deg,var(--primary),#7a70fa);color:#fff;border:0;
  border-top-left-radius:16px;border-top-right-radius:5px;box-shadow:0 6px 16px rgba(91,108,249,.22);
}
.bubble.streaming::after{content:"▍";color:var(--primary);animation:blink .8s infinite;margin-left:2px}
@keyframes blink{50%{opacity:0}}
.typing{display:flex;gap:4px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:16px;border-top-left-radius:5px;width:fit-content;box-shadow:var(--shadow-sm)}
.typing i{width:7px;height:7px;border-radius:50%;background:#b9c3dc;animation:bounce 1s infinite ease-in-out}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}

.quick-replies{display:flex;gap:7px;flex-wrap:wrap;padding:10px 20px 0}
.quick-replies button{
  border:1px solid var(--line);background:#fff;color:var(--ink2);font-size:12px;
  padding:6px 11px;border-radius:999px;transition:.15s;
}
.quick-replies button:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}
.quick-replies button:disabled{opacity:.45;cursor:not-allowed}
.composer{display:flex;gap:9px;align-items:flex-end;padding:12px 20px 4px}
#answerInput{
  flex:1;border:1.5px solid var(--line);border-radius:14px;padding:12px 14px;font-size:14px;
  resize:none;max-height:120px;outline:none;line-height:1.6;background:#fbfcff;
}
#answerInput:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(91,108,249,.09)}
.send-btn{
  width:44px;height:44px;flex:none;border:0;border-radius:14px;color:#fff;font-size:17px;
  background:linear-gradient(135deg,var(--primary),#7a70fa);box-shadow:0 5px 14px rgba(91,108,249,.28);
}
.send-btn:disabled{opacity:.5;cursor:not-allowed}
.composer-hint{text-align:center;font-size:11px;color:var(--muted);padding:2px 0 14px}

/* ---------- done ---------- */
.done-card{
  max-width:620px;margin:44px auto 0;background:#fff;border:1px solid var(--line);border-radius:24px;
  padding:44px 32px;text-align:center;box-shadow:var(--shadow);
}
.done-emoji{font-size:60px;line-height:1}
.done-card h2{font-size:26px;margin:14px 0 8px}
.done-card>p{color:var(--ink2);font-size:14px;margin:0}
.done-stats{display:flex;justify-content:center;gap:14px;margin:28px 0}
.done-stats>div{flex:1;max-width:150px;background:#f7f9fe;border-radius:14px;padding:14px 8px}
.done-stats b{display:block;font-size:22px;color:var(--primary-d)}
.done-stats small{font-size:11px;color:var(--muted)}
.done-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

/* ---------- parent ---------- */
.parent-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.parent-head-actions{display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.select{border:1.5px solid var(--line);background:#fff;border-radius:11px;padding:9px 12px;font-size:13px;color:var(--ink2);outline:none}
.stat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:18px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 14px;box-shadow:var(--shadow-sm)}
.stat-card .s-icon{font-size:18px}
.stat-card b{display:block;font-size:26px;line-height:1.25;margin-top:6px;color:var(--ink)}
.stat-card small{font-size:11px;color:var(--muted)}
.stat-card.accent b{color:var(--primary-d)}
.stat-card.mint b{color:var(--mint)}
.panel-row{display:grid;grid-template-columns:1.35fr 1fr;gap:16px;margin-bottom:18px}
.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow-sm)}
.panel-title{font-size:15px;font-weight:800;margin-bottom:18px}
.panel-title small{font-weight:500;color:var(--muted);font-size:11px;margin-left:8px}
.chart{height:180px;display:flex;align-items:flex-end;gap:12px;padding:0 4px}
.chart-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
.chart-bars{width:100%;display:flex;align-items:flex-end;justify-content:center;gap:4px;height:140px}
.chart-bar{width:16px;border-radius:6px 6px 2px 2px;background:linear-gradient(180deg,#8b97ff,var(--primary));transition:height .4s}
.chart-bar.done{background:linear-gradient(180deg,#63dfc7,var(--mint))}
.chart-label{font-size:11px;color:var(--muted)}
.chart-val{font-size:10px;color:var(--ink2);font-weight:700}
.topics{display:flex;flex-direction:column;gap:12px}
.topic-row{font-size:12px}
.topic-row .t-head{display:flex;justify-content:space-between;margin-bottom:5px;color:var(--ink2)}
.topic-track{height:9px;background:#f0f3fa;border-radius:999px;overflow:hidden}
.topic-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),#9b8bff)}
.empty{text-align:center;color:var(--muted);font-size:13px;padding:36px 10px}
.records-panel{padding-bottom:10px}
.record-list{display:flex;flex-direction:column;gap:10px;max-height:560px;overflow-y:auto}
.record{
  border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:flex;
  align-items:flex-start;gap:13px;cursor:pointer;transition:.15s;background:#fff;
}
.record:hover{border-color:#c8d2f5;background:#fbfcff;transform:translateY(-1px)}
.record-status{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-size:16px;flex:none}
.record-status.done{background:var(--mint-soft)}
.record-status.doing{background:var(--orange-soft)}
.record-status.quit{background:#f1f3f8}
.record-main{flex:1;min-width:0}
.record-q{font-size:13px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.record-meta{font-size:11px;color:var(--muted);margin-top:4px;display:flex;gap:10px;flex-wrap:wrap}
.record-tag{font-size:11px;font-weight:700;padding:4px 10px;border-radius:999px;white-space:nowrap;flex:none}
.record-tag.done{background:var(--mint-soft);color:#0e8f7b}
.record-tag.doing{background:var(--orange-soft);color:#c9762c}
.record-tag.quit{background:#f1f3f8;color:var(--muted)}
.detail-card{width:min(720px,92vw);max-height:84vh;display:flex;flex-direction:column}
.detail-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:12px;border-bottom:1px solid var(--line)}
.detail-head h3{margin:0;font-size:17px}
.icon-btn{border:0;background:#f2f5fb;width:30px;height:30px;border-radius:9px;color:var(--ink2);font-size:14px}
.detail-body{overflow-y:auto;padding:16px 2px}
.detail-question{background:#f7f9fe;border:1px solid var(--line);border-radius:12px;padding:14px;font-size:14px;line-height:1.8;margin-bottom:14px}
.detail-photo{max-width:100%;max-height:230px;object-fit:contain;border:1px solid var(--line);border-radius:12px;margin-bottom:14px}
.detail-meta{font-size:12px;color:var(--muted);margin-bottom:16px}
.detail-msg{display:flex;gap:9px;margin-bottom:12px}
.detail-msg .d-av{width:28px;height:28px;border-radius:9px;background:#ffecd7;display:grid;place-items:center;font-size:14px;flex:none}
.detail-msg.user .d-av{background:var(--primary-soft)}
.detail-msg .d-bubble{background:#f7f9fe;border-radius:12px;padding:10px 13px;font-size:13px;line-height:1.75;white-space:pre-wrap;word-break:break-word;max-width:88%}
.detail-msg.user{flex-direction:row-reverse}
.detail-msg.user .d-bubble{background:var(--primary-soft);color:#33408a}

/* ---------- modal / toast ---------- */
.modal{position:fixed;inset:0;z-index:60;display:grid;place-items:center}
.modal-mask{position:absolute;inset:0;background:rgba(24,34,58,.42);backdrop-filter:blur(3px)}
.modal-card{
  position:relative;background:#fff;border-radius:22px;padding:30px 28px;width:min(400px,92vw);
  text-align:center;box-shadow:0 24px 70px rgba(20,35,75,.24);animation:fadeUp .22s ease both;
}
.modal-emoji{font-size:38px;line-height:1}
.modal-card h3{margin:10px 0 6px;font-size:20px}
.modal-card p{margin:0 0 18px;font-size:13px}
.pin-input{
  width:100%;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;
  font-size:16px;text-align:center;letter-spacing:2px;outline:none;
}
.pin-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(91,108,249,.1)}
.err-text{color:#e05252;font-size:12px;min-height:18px;margin:8px 0 0 !important}
.modal-actions{display:flex;gap:10px;margin-top:8px}
.modal-actions .btn{flex:1}
.pin-hint{display:block;color:var(--muted);font-size:11px;margin-top:14px}
.toast{
  position:fixed;left:50%;bottom:30px;transform:translate(-50%,20px);z-index:90;
  background:#24304d;color:#fff;padding:12px 20px;border-radius:12px;font-size:13px;
  box-shadow:0 10px 30px rgba(20,30,60,.25);opacity:0;pointer-events:none;transition:.25s;max-width:88vw;text-align:center;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .stat-grid{grid-template-columns:repeat(3,1fr)}
  .panel-row{grid-template-columns:1fr}
}
@media(max-width:820px){
  .chat-shell{grid-template-columns:1fr;min-height:0}
  .chat-side{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;flex-wrap:wrap;align-items:center}
  .side-title{width:100%}
  .side-photo{width:110px;max-height:90px}
  .side-question{flex:1;min-width:180px;max-height:90px}
  .side-meta{width:100%}
  .side-tip{display:none}
  .btn-finish{width:100%;margin-top:4px}
  .messages{max-height:52vh;min-height:300px}
  .confirm-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .wrap{padding:18px 14px 50px}
  .topbar-inner{padding:9px 14px}
  .brand-text small{display:none}
  .name-chip{display:none}
  .hero{padding:22px 4px 18px}
  .hero-sub .pc-only{display:none}
  .upload-card{padding:30px 16px 24px}
  .howto{flex-direction:column;gap:8px}
  .howto-arrow{transform:rotate(90deg)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .section-title{font-size:22px}
  .quick-replies{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
  .quick-replies button{flex:none}
  .chat-head{padding:12px 14px}
  .messages{padding:14px}
  .composer{padding:10px 14px 4px}
  .msg{max-width:92%}
  .done-card{padding:32px 18px;margin-top:24px}
  .parent-head-actions{width:100%}
}