:root{
  --brand:#4f6ef7; --brand2:#6c8bff; --brand-soft:#eef2ff;
  --accent:#10b981; --warn:#f59e0b; --bad:#ef4444;
  --ink:#141a2e; --ink2:#48536e; --ink3:#8b93a9;
  --line:#e8ebf2; --bg:#f6f7fb; --card:#fff;
  --nav-h:58px; --safe-b:env(safe-area-inset-bottom,0px);
  --sh:0 2px 10px rgba(20,26,46,.06);
  --sh2:0 8px 28px rgba(20,26,46,.12);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%;overflow:hidden}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg); color:var(--ink); font-size:15px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
#app{position:relative;height:100%;width:100%;max-width:520px;margin:0 auto;background:var(--bg);overflow:hidden}
button{font-family:inherit;font-size:inherit;border:none;background:none;cursor:pointer;color:inherit}
input,textarea{font-family:inherit;font-size:inherit}
.hide{display:none!important}

/* ---------- 添加到桌面横幅 ---------- */
.install-banner{
  display:flex;align-items:center;gap:12px;width:100%;text-align:left;
  background:linear-gradient(135deg,#4f6ef7,#6c8bff);color:#fff;
  border-radius:14px;padding:12px 14px;margin:12px 0 0;box-shadow:var(--sh);
}
.install-banner .ib-icon{font-size:24px}
.install-banner .ib-txt{flex:1;display:flex;flex-direction:column;line-height:1.3}
.install-banner .ib-txt b{font-size:14px}
.install-banner .ib-txt i{font-style:normal;font-size:12px;opacity:.85}
.install-banner .ib-go{
  background:rgba(255,255,255,.22);border-radius:999px;padding:6px 12px;
  font-size:12px;font-weight:600;white-space:nowrap;
}

/* ---------- 安装自检 ---------- */
.pwa-check{display:flex;flex-direction:column;gap:8px;margin-bottom:4px}
.pwa-check .chk{
  display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;
  background:#f4f6fb;font-size:13px;
}
.pwa-check .chk.ok{background:#ecfdf5}
.pwa-check .chk.bad{background:#fef2f2}
.pwa-check .dot{
  flex:none;width:20px;height:20px;border-radius:50%;color:#fff;font-size:12px;
  display:flex;align-items:center;justify-content:center;
}
.pwa-check .chk.ok .dot{background:#10b981}
.pwa-check .chk.bad .dot{background:#ef4444}
.pwa-check .ck{flex:1;color:var(--ink)}
.pwa-check .cf{font-size:12px;color:#b91c1c}
.url-box{
  margin-top:10px;padding:10px 12px;border-radius:10px;background:#f4f6fb;
  font-size:12px;color:var(--ink2);word-break:break-all;line-height:1.5;
  user-select:all;-webkit-user-select:all;
}

/* ---------- 添加引导步骤 ---------- */
.add-steps{display:flex;flex-direction:column;gap:12px}
.add-steps .step{display:flex;gap:12px;align-items:flex-start}
.add-steps .no{
  flex:none;width:24px;height:24px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.add-steps p{margin:0;font-size:14px;color:var(--ink2)}
.add-steps p b{color:var(--ink)}
.add-tip{
  margin-top:14px;padding:10px 12px;border-radius:10px;background:#fff7ed;
  color:#9a5b00;font-size:13px;line-height:1.5;
}
.btn-install{
  width:100%;margin-top:14px;padding:12px;border-radius:12px;
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;
}

/* ---------- 屏幕 ---------- */
.screen{position:absolute;inset:0;display:none;flex-direction:column;background:var(--bg)}
.screen.active{display:flex}
.scroll{flex:1;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding:0 16px}
.scroll::-webkit-scrollbar{width:0}

/* ---------- 启动 ---------- */
.launch-wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px;text-align:center;
  background:linear-gradient(170deg,#eef2ff 0%,#f6f7fb 46%,#fff 100%)}
.launch-logo{font-size:38px;font-weight:800;letter-spacing:2px;
  background:linear-gradient(135deg,var(--brand),#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent}
.launch-sub{color:var(--ink2);margin:6px 0 28px;font-size:14px}
.launch-feats{width:100%;max-width:320px;text-align:left;margin-bottom:32px;display:flex;flex-direction:column;gap:12px}
.lf{background:#fff;border-radius:12px;padding:12px 14px;font-size:14px;color:var(--ink2);box-shadow:var(--sh);display:flex;gap:10px;align-items:flex-start}
.lf span{font-size:17px}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-radius:14px;padding:12px 22px;font-weight:600;box-shadow:0 6px 18px rgba(79,110,247,.28)}
.btn-primary.big{width:100%;max-width:320px;padding:16px;font-size:16px}
.btn-ghost{background:#fff;color:var(--ink2);border:1px solid var(--line);border-radius:14px;padding:12px 22px;font-weight:500}
.launch-tip{color:var(--ink3);font-size:12px;margin-top:16px}
.launch-tip.err{color:#d93025;font-size:13px;cursor:pointer;text-decoration:underline;text-underline-offset:3px;line-height:1.5}
.launch-tip.ok{color:#1a7f37}

/* ---------- 顶栏 ---------- */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 16px 10px;background:var(--bg)}
.tb-title{font-size:20px;font-weight:700}
.tb-sub{font-size:12px;color:var(--ink3);margin-top:1px}
.level-chip{background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;padding:5px 12px;border-radius:20px}

/* ---------- 今日卡片 ---------- */
.today-card{background:linear-gradient(135deg,#4f6ef7,#7c6cf5);color:#fff;border-radius:18px;padding:18px;box-shadow:0 8px 22px rgba(79,110,247,.25);margin-bottom:20px}
.tc-label{font-size:12px;opacity:.85}
.tc-num{font-size:34px;font-weight:800;line-height:1.2;margin:2px 0 10px}
.tc-num i{font-size:13px;font-style:normal;font-weight:500;opacity:.85;margin-left:4px}
.tc-bar{height:6px;border-radius:4px;background:rgba(255,255,255,.28);overflow:hidden}
.tc-bar-in{height:100%;background:#fff;border-radius:4px;transition:width .4s}
.tc-goal{font-size:12px;opacity:.9;margin-top:8px}

.sec-head{font-size:15px;font-weight:700;margin:20px 0 10px;display:flex;align-items:center;gap:6px}

/* ---------- 快捷卡 ---------- */
.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.qcard{background:#fff;border-radius:14px;padding:14px;text-align:left;box-shadow:var(--sh);display:flex;flex-direction:column;gap:3px}
.qcard:active{transform:scale(.97)}
.qc-icon{font-size:20px}
.qcard b{font-size:14px}
.qcard i{font-style:normal;font-size:11px;color:var(--ink3);line-height:1.4}

/* ---------- 场景 ---------- */
.sc-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;margin:0 -16px;padding-left:16px;padding-right:16px}
.sc-row::-webkit-scrollbar{height:0}
.scard{flex:0 0 150px;background:#fff;border-radius:14px;padding:12px;box-shadow:var(--sh);text-align:left}
.scard:active{transform:scale(.97)}
.sc-emoji{font-size:22px}
.sc-name{font-size:13px;font-weight:700;margin-top:4px}
.sc-desc{font-size:11px;color:var(--ink3);line-height:1.35;margin-top:2px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sc-tag{display:inline-block;font-size:10px;padding:1px 6px;border-radius:6px;background:var(--brand-soft);color:var(--brand);margin-top:6px}

.cat-tabs{display:flex;gap:8px;padding:4px 16px 10px;overflow-x:auto}
.cat-tabs::-webkit-scrollbar{height:0}
.ctab{flex:0 0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:6px 14px;font-size:13px;color:var(--ink2)}
.ctab.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

.scene-item{background:#fff;border-radius:14px;padding:13px 14px;margin-bottom:10px;box-shadow:var(--sh);display:flex;gap:12px;align-items:flex-start}
.scene-item:active{transform:scale(.995)}
.si-emoji{font-size:24px;flex:0 0 auto}
.si-main{flex:1;min-width:0}
.si-name{font-size:15px;font-weight:700;display:flex;align-items:center;gap:6px}
.si-lv{font-size:10px;background:#f1f3f9;color:var(--ink3);padding:1px 6px;border-radius:6px;font-weight:600}
.si-desc{font-size:12px;color:var(--ink2);margin-top:2px}
.si-star{margin-left:auto;font-size:16px;color:var(--ink3);flex:0 0 auto}
.si-star.on{color:#f59e0b}

/* ---------- 练习页 ---------- */
.ptop{display:flex;align-items:center;gap:8px;padding:14px 12px;background:#fff;border-bottom:1px solid var(--line)}
.back-btn{font-size:26px;line-height:1;width:32px;color:var(--ink2)}
.ptop-info{flex:1;min-width:0}
.ptop-title{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ptop-sub{font-size:11px;color:var(--ink3)}
.ptop-act{background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;padding:6px 12px;border-radius:16px}

.chat-scroll{flex:1;overflow-y:auto;padding:14px 14px 8px;-webkit-overflow-scrolling:touch}
#chat-list{display:flex;flex-direction:column;gap:12px}
.msg{max-width:84%;padding:11px 13px;border-radius:16px;font-size:14.5px;line-height:1.55;word-break:break-word;white-space:pre-wrap}
.msg.ai{background:#fff;align-self:flex-start;border-bottom-left-radius:5px;box-shadow:var(--sh)}
.msg.me{background:var(--brand);color:#fff;align-self:flex-end;border-bottom-right-radius:5px}
.msg.sys{align-self:center;background:#f1f3f9;color:var(--ink3);font-size:12px;max-width:90%;text-align:center;border-radius:12px}
.msg .who{font-size:11px;opacity:.65;margin-bottom:3px}
.feedback{background:#fffcf5;border:1px solid #fde9c8;border-radius:14px;padding:11px 13px;font-size:13.5px;align-self:stretch;box-shadow:var(--sh)}
.fb-head{font-weight:700;color:#b45309;font-size:13px;margin-bottom:5px;display:flex;align-items:center;gap:5px}
.fb-row{margin-bottom:5px;line-height:1.5}
.fb-row b{color:var(--ink)}
.fb-bad{color:var(--bad);text-decoration:line-through;opacity:.75}
.fb-good{color:var(--accent);font-weight:600}
.fb-note{color:var(--ink3);font-size:12px;margin-top:5px}
.typing{display:flex;gap:4px;padding:10px 14px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--ink3);animation:bl 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}
.typing i:nth-child(3){animation-delay:.4s}
@keyframes bl{0%,60%,100%{opacity:.25}30%{opacity:1}}

.mode-bar{display:flex;gap:6px;padding:8px 12px 4px;background:#fff;border-top:1px solid var(--line)}
.mbtn{flex:1;padding:7px;border-radius:10px;font-size:13px;color:var(--ink2);background:#f4f6fb}
.mbtn.active{background:var(--brand);color:#fff;font-weight:600}

.shadow-panel,.task-panel{background:#fff;padding:12px 14px;border-top:1px solid var(--line);max-height:34vh;overflow-y:auto}
.sp-ref{font-size:15px;line-height:1.6;font-weight:500;margin-bottom:10px}
.sp-actions{display:flex;gap:8px;margin-bottom:10px}
.sp-play{background:var(--brand-soft);color:var(--brand);border-radius:10px;padding:8px 14px;font-size:13px;font-weight:600}
.sp-play.alt{background:#f4f6fb;color:var(--ink2)}
.sp-score{display:flex;gap:10px;margin-bottom:10px}
.sc-item{flex:1;text-align:center;background:#f8f9fc;border-radius:12px;padding:8px 4px}
.sc-item .n{font-size:20px;font-weight:800}
.sc-item .l{font-size:10px;color:var(--ink3)}
.sp-diff{font-size:15px;line-height:2;margin-bottom:10px;word-spacing:1px}
.w-ok{color:var(--ink)}
.w-bad{color:var(--bad);font-weight:700;border-bottom:2px solid var(--bad)}
.w-miss{color:var(--ink3);background:#f1f3f9;padding:1px 4px;border-radius:4px;text-decoration:line-through}
.w-extra{color:var(--warn);background:#fff7e6;padding:1px 4px;border-radius:4px}
.sp-tips{background:#f8f9fc;border-radius:12px;padding:10px 12px;font-size:13px;line-height:1.6}
.sp-tips b{color:var(--brand)}
.tp-goal{font-size:14px;line-height:1.6}
.tp-goal li{margin-bottom:4px}
.tp-status{margin-top:8px;font-size:12px;color:var(--ink3)}

.composer{display:flex;gap:8px;padding:10px 12px calc(10px + var(--safe-b));background:#fff;border-top:1px solid var(--line);align-items:center}
.mic-btn{flex:0 0 auto;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-radius:24px;padding:11px 18px;display:flex;align-items:center;gap:6px;font-weight:600;box-shadow:0 4px 14px rgba(79,110,247,.3)}
.mic-btn.recording{background:linear-gradient(135deg,#ef4444,#f87171);animation:pulse 1.2s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.04)}}
.mic-txt{font-size:14px}
#text-input{flex:1;border:1px solid var(--line);border-radius:22px;padding:11px 14px;outline:none;background:#f8f9fc;min-width:0}
#text-input:focus{border-color:var(--brand2);background:#fff}
.send-btn{background:var(--brand);color:#fff;border-radius:20px;padding:10px 14px;font-weight:600}
.rec-hint{position:absolute;left:50%;bottom:96px;transform:translateX(-50%);background:rgba(20,26,46,.86);color:#fff;padding:8px 16px;border-radius:20px;font-size:13px;display:flex;align-items:center;gap:8px;z-index:20}
.wave{width:14px;height:14px;border-radius:50%;background:#ef4444;animation:pulse 1s infinite}

/* ---------- 测评 ---------- */
.assess-scroll{padding:0 16px}
.assess-bar{height:5px;background:#e8ebf2;border-radius:4px;margin:14px 0 18px;overflow:hidden}
.assess-bar-in{height:100%;background:var(--brand);border-radius:4px;transition:width .35s}
.q-title{font-size:17px;font-weight:700;margin-bottom:6px}
.q-desc{font-size:13px;color:var(--ink2);margin-bottom:14px;line-height:1.6}
.q-sent{background:#fff;border-radius:14px;padding:16px;font-size:17px;line-height:1.7;font-weight:500;box-shadow:var(--sh);margin-bottom:12px}
.q-sent .zh{display:block;font-size:12px;color:var(--ink3);font-weight:400;margin-top:6px}
.opt{display:block;width:100%;text-align:left;background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:9px;font-size:14px;line-height:1.5}
.opt.sel{border-color:var(--brand);background:var(--brand-soft)}
.opt.right{border-color:var(--accent);background:#ecfdf5}
.opt.wrong{border-color:var(--bad);background:#fef2f2}
.assess-act{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.mic-big{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-radius:16px;padding:16px;font-size:16px;font-weight:600;box-shadow:0 6px 18px rgba(79,110,247,.28);display:flex;align-items:center;justify-content:center;gap:8px}
.mic-big.recording{background:linear-gradient(135deg,#ef4444,#f87171)}
.transcript{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px;font-size:14px;margin-top:12px;line-height:1.6}
.transcript .lbl{font-size:11px;color:var(--ink3);margin-bottom:3px}
.why{background:#ecfdf5;border:1px solid #a7f3d0;border-radius:12px;padding:11px 13px;font-size:13px;margin-top:10px;line-height:1.6;color:#065f46}

/* ---------- 报告 ---------- */
#report-scroll{padding:16px}
.rep-hero{background:linear-gradient(135deg,#4f6ef7,#7c6cf5);color:#fff;border-radius:20px;padding:24px;text-align:center;box-shadow:0 10px 26px rgba(79,110,247,.26)}
.rep-lv{font-size:52px;font-weight:800;line-height:1}
.rep-lvname{font-size:15px;opacity:.92;margin-top:4px}
.rep-sum{font-size:13px;opacity:.9;margin-top:12px;line-height:1.6;text-align:left;background:rgba(255,255,255,.14);border-radius:12px;padding:12px}
.rep-card{background:#fff;border-radius:16px;padding:16px;margin-top:14px;box-shadow:var(--sh)}
.rep-card h4{margin:0 0 12px;font-size:15px}
.radar-row{display:flex;align-items:center;gap:10px;margin-bottom:9px}
.rr-name{font-size:12px;color:var(--ink2);flex:0 0 52px}
.rr-bar{flex:1;height:8px;background:#f1f3f9;border-radius:5px;overflow:hidden}
.rr-in{height:100%;border-radius:5px;background:linear-gradient(90deg,var(--brand),var(--brand2))}
.rr-val{font-size:12px;font-weight:700;flex:0 0 30px;text-align:right}
.rep-list{margin:0;padding-left:18px;font-size:13.5px;line-height:1.75;color:var(--ink2)}
.rep-list li{margin-bottom:5px}
.rep-path{display:flex;flex-direction:column;gap:8px}
.rp-item{display:flex;gap:10px;background:#f8f9fc;border-radius:12px;padding:10px 12px;font-size:13px;line-height:1.5}
.rp-n{flex:0 0 20px;height:20px;border-radius:50%;background:var(--brand);color:#fff;font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:700;margin-top:1px}
.report-foot{position:sticky;bottom:0;padding:12px 16px calc(12px + var(--safe-b));background:var(--bg);display:flex;flex-direction:column;gap:8px}
.report-foot .btn-primary{width:100%;padding:14px}
.report-foot .btn-ghost{width:100%;padding:12px}

/* ---------- 笔记 ---------- */
.vocab-item{background:#fff;border-radius:14px;padding:13px 14px;margin-bottom:10px;box-shadow:var(--sh)}
.vi-top{display:flex;align-items:flex-start;gap:8px}
.vi-en{flex:1;font-size:15px;font-weight:700;line-height:1.45}
.vi-kind{font-size:10px;padding:2px 7px;border-radius:6px;background:var(--brand-soft);color:var(--brand);flex:0 0 auto;font-weight:600}
.vi-zh{font-size:13px;color:var(--ink2);margin-top:3px}
.vi-ex{font-size:12.5px;color:var(--ink3);margin-top:6px;line-height:1.55;font-style:italic}
.vi-src{font-size:11px;color:var(--ink3);margin-top:6px}
.vi-act{display:flex;gap:8px;margin-top:9px}
.vi-btn{font-size:12px;padding:5px 12px;border-radius:14px;background:#f4f6fb;color:var(--ink2)}
.vi-btn.on{background:#ecfdf5;color:var(--accent)}
.vi-btn.del{background:#fef2f2;color:var(--bad)}
.empty{text-align:center;padding:50px 20px;color:var(--ink3);font-size:14px}
.empty span{font-size:38px;display:block;margin-bottom:10px}

/* ---------- 我的 ---------- */
.me-card{background:#fff;border-radius:16px;padding:16px;margin-bottom:12px;box-shadow:var(--sh)}
.me-card h4{margin:0 0 12px;font-size:15px}
.me-row{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
.me-row:last-child{border-bottom:none}
.me-row .v{color:var(--ink3);font-size:13px}
.me-row .v b{color:var(--ink);font-size:15px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.sg{text-align:center;background:#f8f9fc;border-radius:12px;padding:12px 6px}
.sg .n{font-size:20px;font-weight:800;color:var(--brand)}
.sg .l{font-size:11px;color:var(--ink3);margin-top:2px}
.auth-box{background:#fff;border-radius:16px;padding:18px;box-shadow:var(--sh)}
.auth-tabs{display:flex;gap:6px;margin-bottom:14px}
.at{flex:1;padding:8px;border-radius:10px;font-size:13px;background:#f4f6fb;color:var(--ink2)}
.at.active{background:var(--brand);color:#fff;font-weight:600}
.finput{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:10px;outline:none;background:#f8f9fc}
.finput:focus{border-color:var(--brand2);background:#fff}
.btn-primary.full{width:100%;padding:13px;margin-top:4px}
.auth-note{font-size:11.5px;color:var(--ink3);line-height:1.6;margin-top:12px}
.linkbtn{color:var(--brand);font-size:12.5px;text-decoration:underline;background:none}
.pron-item{background:#f8f9fc;border-radius:10px;padding:9px 11px;margin-bottom:7px;font-size:13px;line-height:1.5}
.pron-item b{color:var(--bad)}

/* ---------- 底部导航 ---------- */
.tabbar{position:absolute;left:0;right:0;bottom:0;height:calc(var(--nav-h) + var(--safe-b));padding-bottom:var(--safe-b);
  background:#fff;border-top:1px solid var(--line);display:flex;z-index:30}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:10.5px;color:var(--ink3)}
.tab span{font-size:19px;line-height:1}
.tab.active{color:var(--brand);font-weight:700}
.screen.active .scroll{padding-bottom:calc(var(--nav-h) + var(--safe-b) + 10px)}

/* ---------- 弹层 ---------- */
.sheet-mask{position:absolute;inset:0;background:rgba(20,26,46,.4);z-index:50}
.sheet{position:absolute;left:0;right:0;bottom:0;max-height:82%;background:#fff;border-radius:20px 20px 0 0;z-index:60;display:flex;flex-direction:column;
  box-shadow:var(--sh2);animation:up .25s ease}
@keyframes up{from{transform:translateY(30px);opacity:.4}to{transform:translateY(0);opacity:1}}
.sheet-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px 10px;border-bottom:1px solid var(--line)}
.sheet-head b{font-size:16px}
.sheet-body{flex:1;overflow-y:auto;padding:14px 18px calc(20px + var(--safe-b));font-size:14px;line-height:1.7}
.sheet-body h5{margin:14px 0 6px;font-size:14px;color:var(--brand)}
.sheet-body h5:first-child{margin-top:0}
.toast{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:rgba(20,26,46,.88);color:#fff;
  padding:11px 20px;border-radius:22px;font-size:13.5px;z-index:99;max-width:80%;text-align:center;line-height:1.5}