:root{
  --purple:#5B2D8E;
  --purple-dark:#47226F;
  --purple-soft:#F2EDF9;
  --purple-line:#DCD0EC;
  --ink:#22202A;
  --ink-2:#5A5766;
  --ink-3:#918DA0;
  --bg:#F6F5F9;
  --card:#FFFFFF;
  --line:#E7E4EF;
  --ok:#1D9E75;
  --ok-soft:#E1F5EE;
  --bad:#D9534F;
  --bad-soft:#FCEBEB;
  --warn:#BA7517;
  --warn-soft:#FAEEDA;
  --radius:14px;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);color:var(--ink);
  font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased;
}

/* ---------- header ---------- */
.app-header{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 22px;background:var(--purple);color:#fff;
  box-shadow:0 2px 10px rgba(91,45,142,.18);position:sticky;top:0;z-index:30;
}
.brand{display:flex;align-items:center;gap:12px}
.logo{
  width:40px;height:40px;border-radius:11px;background:rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:600;
  border:1px solid rgba(255,255,255,.28);
}
/* LUCA 字标：兼「管理端」暗门触发点（连点 5 下），改样式注意别把热区做到 0 */
.logo.wide{width:auto;padding:0 13px;font-size:15px;font-weight:800;letter-spacing:1.2px;cursor:pointer;user-select:none}
@media (max-width:520px){.logo.wide{padding:0 10px;font-size:13.5px;letter-spacing:.8px}}
.brand-txt h1{font-size:16px;font-weight:600;letter-spacing:.3px}
.brand-txt p{font-size:12px;opacity:.78;line-height:1.3}
.header-actions{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- buttons ---------- */
.btn{
  border:1px solid transparent;background:var(--purple);color:#fff;
  padding:8px 16px;border-radius:10px;font-size:13px;cursor:pointer;
  font-family:inherit;transition:.15s;white-space:nowrap;
}
.btn:hover{background:var(--purple-dark)}
.btn.ghost{background:transparent;border-color:var(--purple-line);color:var(--purple)}
.btn.ghost:hover{background:var(--purple-soft)}
.app-header .btn.ghost{border-color:rgba(255,255,255,.35);color:#fff}
.app-header .btn.ghost:hover{background:rgba(255,255,255,.15)}
.btn.sm{padding:5px 11px;font-size:12px;border-radius:8px}
.btn.primary{background:var(--purple)}
.btn.ok{background:var(--ok)}
.btn.ok:hover{background:#157a5a}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* ---------- control bar ---------- */
.control-bar{
  background:var(--card);border-bottom:1px solid var(--line);
  padding:12px 22px;display:flex;flex-direction:column;gap:9px;
}
.ctl-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ctl-label{
  font-size:12px;color:var(--ink-3);min-width:30px;letter-spacing:.5px;
  flex-shrink:0;
}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  padding:5px 13px;border-radius:20px;font-size:13px;cursor:pointer;
  font-family:inherit;transition:.15s;
}
.chip:hover{border-color:var(--purple-line);color:var(--purple)}
.chip.on{background:var(--purple);border-color:var(--purple);color:#fff;font-weight:500}
.chip.lock{opacity:.45}
.chip.lock::after{content:" 🔒";font-size:10px}
.level-hint{font-size:12px;color:var(--ink-3);margin-left:4px}

/* ---------- layout ---------- */
.layout{
  display:grid;grid-template-columns:290px minmax(0,1fr);gap:18px;
  padding:18px 22px 40px;max-width:1360px;margin:0 auto;align-items:start;
}
.side{display:flex;flex-direction:column;gap:14px;position:sticky;top:96px}
.main-panel{display:flex;flex-direction:column;gap:14px;min-width:0}

/* ---------- card ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;
}
.card h2{
  font-size:13px;font-weight:600;color:var(--ink-2);letter-spacing:.4px;
  margin-bottom:12px;display:flex;align-items:center;gap:6px;
}
.card h2::before{content:"";width:3px;height:13px;border-radius:2px;background:var(--purple)}

/* ---------- stats ---------- */
.progress-wrap{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.progress-bar{flex:1;height:8px;background:var(--purple-soft);border-radius:5px;overflow:hidden}
.progress-fill{height:100%;width:0;background:var(--purple);border-radius:5px;transition:width .3s}
.progress-txt{font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mini{
  background:var(--bg);border-radius:10px;padding:9px 11px;
  display:flex;flex-direction:column;gap:1px;
}
.mini-num{font-size:19px;font-weight:600;color:var(--purple);font-variant-numeric:tabular-nums}
.mini-lbl{font-size:11px;color:var(--ink-3)}

/* ---------- word list ---------- */
.wordlist{
  max-height:250px;overflow-y:auto;display:flex;flex-direction:column;gap:3px;
  margin:-4px -4px 0;padding:4px;
}
.wordlist::-webkit-scrollbar{width:6px}
.wordlist::-webkit-scrollbar-thumb{background:var(--purple-line);border-radius:3px}
.wl-item{
  display:flex;align-items:center;gap:8px;padding:6px 9px;border-radius:8px;
  cursor:pointer;font-size:13px;transition:.12s;
}
.wl-item:hover{background:var(--purple-soft)}
.wl-item.on{background:var(--purple);color:#fff}
.wl-item.on .wl-cn{color:rgba(255,255,255,.8)}
.wl-w{font-weight:500;min-width:74px;max-width:120px;flex-shrink:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.wl-cn{color:var(--ink-3);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.wl-dot{width:6px;height:6px;border-radius:50%;margin-left:auto;flex-shrink:0;background:var(--line)}
.wl-dot.master{background:var(--ok)}
.wl-dot.review{background:var(--bad)}
/* 未注册：第 30 个之后的词可见但锁住，点了弹注册引导 */
.wl-item.lk{opacity:.46}
.wl-item.lk:hover{background:var(--purple-soft);opacity:.7}
.wl-item.lk .wl-w{color:var(--ink-2)}
.wl-lk{font-size:10.5px;flex-shrink:0;opacity:.85;margin-left:auto}
.wl-item.lk .wl-dot{margin-left:4px}

/* ---------- type toggles ---------- */
.type-toggles{display:flex;flex-direction:column;gap:7px}
.tt-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);cursor:pointer}
.tt-item input{accent-color:var(--purple);width:15px;height:15px;cursor:pointer}
.tt-item.off{opacity:.45}
.tip{font-size:11.5px;color:var(--ink-3);margin-top:10px;line-height:1.55}

/* ---------- toolbar / tabs ---------- */
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.tabs{display:flex;gap:6px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);padding:5px;border-radius:12px}
.tab{
  border:0;background:transparent;color:var(--ink-2);padding:7px 18px;
  border-radius:9px;font-size:13.5px;cursor:pointer;font-family:inherit;transition:.15s;
}
.tab:hover{background:var(--purple-soft);color:var(--purple)}
.tab.on{background:var(--purple);color:#fff;font-weight:500}
.tab.lock{opacity:.42}
.toolbar-right{display:flex;align-items:center;gap:8px}
.counter{font-size:12.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}

/* ---------- quiz ---------- */
.quiz-card{min-height:390px;display:flex;flex-direction:column}
.quiz-head{display:flex;align-items:center;gap:8px;margin-bottom:14px;flex-wrap:wrap}
.tag{
  background:var(--purple);color:#fff;font-size:11.5px;padding:3px 11px;border-radius:20px;
  letter-spacing:.3px;
}
.tag.soft{background:var(--purple-soft);color:var(--purple)}
.tag.grade{background:var(--warn-soft);color:var(--warn)}
.quiz-body{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:8px 0}
.quiz-foot{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:16px;min-height:34px}

/* word display */
.big-word{
  font-size:46px;font-weight:600;letter-spacing:.5px;color:var(--purple);
  font-family:"Georgia","Times New Roman",serif;line-height:1.15;text-align:center;
  word-break:break-word;
}
.ipa{font-size:15px;color:var(--ink-3);font-family:"Segoe UI",sans-serif}
.pos{font-size:12px;color:var(--purple);background:var(--purple-soft);padding:2px 8px;border-radius:6px}
/* 选择题大词下的词性标签（en2cn 等） */
.pos-tag{display:inline-block;font-size:12px;color:var(--purple);background:var(--purple-soft);padding:2px 8px;border-radius:6px;margin-top:4px}
/* 侧栏词条里的词性小标签 */
.wl-pos{font-size:11px;color:var(--purple);background:var(--purple-soft);padding:1px 6px;border-radius:5px;margin-left:5px;flex-shrink:0;white-space:nowrap}
.speak-row{display:flex;gap:8px;align-items:center;justify-content:center;flex-wrap:wrap}
.speak-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--purple-line);
  background:#fff;color:var(--purple);font-size:19px;cursor:pointer;transition:.15s;
}
.speak-btn:hover{background:var(--purple-soft);transform:scale(1.05)}
/* 听写·英汉：只听声音，不给单词不给音标 */
.speak-only{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px 0 4px}
.speak-btn.big{width:88px;height:88px;font-size:36px;background:var(--purple-soft)}
.speak-btn.big:hover{background:var(--purple-line)}
.big-cn{font-size:34px;font-weight:600;color:var(--purple);text-align:center}

/* options */
.options{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;max-width:620px}
.opt{
  border:1px solid var(--line);background:#fff;border-radius:11px;padding:13px 16px;
  font-size:14.5px;cursor:pointer;font-family:inherit;text-align:left;color:var(--ink);
  transition:.15s;display:flex;align-items:center;gap:10px;
}
.opt:hover:not(:disabled){border-color:var(--purple);background:var(--purple-soft)}
.opt .idx{
  width:22px;height:22px;border-radius:6px;background:var(--purple-soft);color:var(--purple);
  font-size:11.5px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.opt.right{border-color:var(--ok);background:var(--ok-soft);color:#0F6E56}
.opt.right .idx{background:var(--ok);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft);color:#8F2A26}
.opt.wrong .idx{background:var(--bad);color:#fff}
.opt:disabled{cursor:default}
.opt.en{font-family:"Georgia",serif;font-size:15.5px}

/* spelling */
.syl-slots{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;min-height:56px;align-items:center}
.slot{
  min-width:56px;height:54px;border-bottom:3px solid var(--purple-line);
  display:flex;align-items:center;justify-content:center;font-size:24px;
  font-family:"Georgia",serif;color:var(--purple);padding:0 6px;
}
.slot.filled{border-bottom-color:var(--purple)}
.slot.ok{border-bottom-color:var(--ok);color:var(--ok)}
.slot.no{border-bottom-color:var(--bad);color:var(--bad)}
.pool{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;max-width:640px}
.pool-item{
  border:1px solid var(--purple-line);background:#fff;color:var(--purple);
  padding:9px 16px;border-radius:9px;font-size:19px;font-family:"Georgia",serif;
  cursor:pointer;font-family:inherit;transition:.15s;
}
.pool-item:hover:not(:disabled){background:var(--purple-soft)}
.pool-item:disabled{opacity:.25;cursor:default}
.pool-item.used{opacity:.2}
.letter-pool .pool-item{font-family:"Georgia",serif;font-size:21px;padding:8px 15px;min-width:44px}
.spell-input{
  font-family:"Georgia",serif;font-size:26px;text-align:center;letter-spacing:5px;
  border:0;border-bottom:3px solid var(--purple-line);padding:8px 12px;width:min(460px,90%);
  outline:none;background:transparent;color:var(--purple);
}
.spell-input:focus{border-bottom-color:var(--purple)}

/* ---------- 听写 · 汉英（默写，不给提示） ---------- */
.dict-box{display:flex;justify-content:center;width:100%}
.dict-input{
  font-family:"Georgia","Times New Roman",serif;font-size:30px;text-align:center;
  letter-spacing:3px;border:0;border-bottom:3px solid var(--purple-line);
  padding:10px 14px;width:min(560px,92%);outline:none;background:transparent;
  color:var(--purple);border-radius:0;
}
.dict-input:focus{border-bottom-color:var(--purple)}
.dict-input:disabled{color:var(--ink-2);opacity:.9}
.dict-input::placeholder{
  font-size:14px;letter-spacing:0;color:var(--ink-3);
  font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

/* sentence */
.scramble{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;max-width:660px}
.sc-item{
  border:1px solid var(--purple-line);background:#fff;color:var(--ink);
  padding:8px 14px;border-radius:9px;font-size:15px;cursor:pointer;font-family:inherit;transition:.15s;
}
.sc-item:hover:not(:disabled){background:var(--purple-soft);color:var(--purple)}
.sc-item:disabled{opacity:.25}
.sent-line{
  min-height:58px;border:1px dashed var(--purple-line);border-radius:11px;width:100%;
  max-width:660px;padding:12px;display:flex;gap:8px;flex-wrap:wrap;align-items:center;
  background:#FCFBFE;
}
.sent-line .sc-put{
  background:var(--purple-soft);color:var(--purple);padding:7px 13px;border-radius:8px;
  font-size:15px;cursor:pointer;
}
.placeholder{color:var(--ink-3);font-size:13px}

/* feedback */
.feedback{
  text-align:center;font-size:14px;padding:11px 16px;border-radius:11px;
  width:100%;max-width:660px;
}
.feedback.ok{background:var(--ok-soft);color:#0F6E56}
.feedback.no{background:var(--bad-soft);color:#8F2A26}
.feedback .fb-word{font-family:"Georgia",serif;font-weight:600;font-size:17px}
.feedback .fb-sub{font-size:12.5px;opacity:.85;margin-top:3px}

/* result card */
.result-card{text-align:center}
.result-card h2{justify-content:center}
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0 16px}
.res-item{background:var(--bg);border-radius:11px;padding:13px 8px}
.res-num{font-size:23px;font-weight:600;color:var(--purple);display:block;font-variant-numeric:tabular-nums}
.res-lbl{font-size:11.5px;color:var(--ink-3)}
.wrong-list{text-align:left;max-height:190px;overflow-y:auto;margin-bottom:14px}
.wrong-row{
  display:flex;gap:10px;align-items:baseline;padding:7px 11px;border-radius:8px;
  background:var(--bad-soft);margin-bottom:5px;font-size:13px;
}
.wrong-row .ww{font-family:"Georgia",serif;font-weight:600;color:#8F2A26;min-width:100px}
.wrong-row .wc{color:var(--ink-2)}

/* modal */
.modal{
  position:fixed;inset:0;background:rgba(34,32,42,.42);z-index:60;
  display:flex;align-items:center;justify-content:center;padding:22px;
}
.modal-box{
  background:#fff;border-radius:16px;max-width:660px;width:100%;max-height:82vh;
  display:flex;flex-direction:column;overflow:hidden;
}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 20px;border-bottom:1px solid var(--line);
}
.modal-head h3{font-size:15px;color:var(--purple)}
.modal-body{padding:18px 20px;overflow-y:auto;font-size:13.5px;color:var(--ink-2);line-height:1.75}
.modal-body h4{color:var(--purple);font-size:13.5px;margin:14px 0 6px}
.modal-body h4:first-child{margin-top:0}
.modal-body ul{margin-left:18px}
.modal-body li{margin-bottom:3px}
.modal-body code{background:var(--purple-soft);padding:1px 5px;border-radius:4px;font-size:12px;color:var(--purple)}

/* toast */
.toast{
  position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:10px 20px;border-radius:10px;font-size:13px;
  opacity:0;pointer-events:none;transition:.25s;z-index:80;
}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 账号 ---------- */
.user-chip{
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);color:#fff;
  padding:6px 13px;border-radius:20px;font-size:12.5px;cursor:pointer;transition:.15s;
  max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.user-chip:hover{background:rgba(255,255,255,.28)}
.sync-state{font-size:11.5px;color:var(--ink-3);margin-top:10px;min-height:16px}
.count-badge{
  margin-left:auto;font-size:11px;font-weight:400;color:var(--ink-3);
  background:var(--bg);padding:1px 8px;border-radius:10px;
}

.auth-layer{
  position:fixed;inset:0;z-index:70;padding:20px;
  background:linear-gradient(150deg,#4A2472 0%,#5B2D8E 45%,#7A4BB0 100%);
  display:flex;align-items:center;justify-content:center;overflow-y:auto;
}
.auth-box{
  background:#fff;border-radius:18px;width:100%;max-width:392px;padding:26px 24px 20px;
  position:relative;box-shadow:0 24px 60px rgba(30,10,60,.35);
  max-height:92vh;overflow-y:auto;
}
.auth-x{
  position:absolute;top:10px;right:14px;border:0;background:transparent;
  font-size:24px;line-height:1;color:var(--ink-3);cursor:pointer;padding:4px 6px;
}
.auth-x:hover{color:var(--purple)}
.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.logo.lg{width:46px;height:46px;font-size:22px;background:var(--purple);border:0;border-radius:13px}
/* 登录框里的 LUCA 字标：要压过 .logo.lg 的定宽，故用三选择器 */
.logo.lg.wide{width:auto;padding:0 14px;font-size:16px;letter-spacing:1.6px}
.auth-brand h2{font-size:17px;color:var(--purple)}
.auth-brand p{font-size:11.5px;color:var(--ink-3);line-height:1.4}
.auth-tabs{display:flex;gap:6px;background:var(--purple-soft);padding:4px;border-radius:11px;margin-bottom:16px}
.atab{
  flex:1;border:0;background:transparent;color:var(--purple);padding:8px;
  border-radius:8px;font-size:13.5px;cursor:pointer;font-family:inherit;transition:.15s;
}
.atab.on{background:#fff;font-weight:600;box-shadow:0 1px 4px rgba(91,45,142,.16)}
.fld{display:block;margin-bottom:13px}
.fld span{display:block;font-size:12px;color:var(--ink-3);margin-bottom:5px}
.fld input,.fld select{
  width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 13px;
  font-size:15px;font-family:inherit;color:var(--ink);outline:none;transition:.15s;
  background:#FCFBFE;
}
.fld select{appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23918DA0' stroke-width='1.7' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 13px center;padding-right:34px;
}
.fld input:focus,.fld select:focus{border-color:var(--purple);background:#fff;box-shadow:0 0 0 3px rgba(91,45,142,.1)}
.fld .req{color:#C0392B;font-weight:600;font-size:11px;margin-left:2px}
.fld .opt{color:#918DA0;font-weight:500;font-size:11px;margin-left:2px}
.role-row{display:flex;align-items:center;gap:14px;margin:2px 0 12px;padding:10px 12px;background:var(--purple-soft);border-radius:11px}
.role-lbl{font-size:13px;color:#5B2D8E;font-weight:600}
.role-opt{display:inline-flex;align-items:center;gap:5px;font-size:14px;color:var(--ink);cursor:pointer}
.role-opt input{accent-color:var(--purple);width:16px;height:16px}
.auth-forgot{text-align:right;margin:-6px 0 12px;font-size:12.5px}
.auth-forgot a{color:var(--purple);text-decoration:none;font-weight:500}
.auth-forgot a:hover{text-decoration:underline}
.auth-step{font-size:12.5px;color:var(--purple);background:var(--purple-soft);
  padding:8px 11px;border-radius:9px;margin-bottom:13px;line-height:1.5}
.rs-q{font-size:14px;color:var(--ink);background:#FCFBFE;border:1px dashed var(--purple-line);
  border-radius:10px;padding:11px 13px;margin-bottom:13px;line-height:1.55;font-weight:500}

/* ---------- 成绩单 / 星级 ---------- */
.score-card{background:linear-gradient(180deg,#FBF8FE,#fff);border:1px solid var(--purple-line);
  border-radius:14px;padding:16px 16px 12px;margin:6px 0 4px}
.score-card.compact{padding:12px 12px 8px;margin:0}
.sc-main{display:flex;align-items:baseline;justify-content:center;gap:4px;flex-wrap:wrap}
.sc-num{font-size:44px;font-weight:800;color:var(--purple);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-1px}
.score-card.compact .sc-num{font-size:32px}
.sc-unit{font-size:14px;color:var(--ink-3);margin-right:6px}
.sc-stars{display:flex;align-items:center;gap:2px;margin-left:8px}
.sc-stars em{font-style:normal;font-size:12.5px;color:var(--ink-2);margin-left:5px}
.star{font-size:20px;color:#E4DFEC;line-height:1}
.star.on{color:#F5B301}
.star.sm{font-size:12px}
.sc-grid{grid-template-columns:repeat(5,1fr);gap:6px;margin:13px 0 6px}
.score-card.compact .sc-grid{margin:9px 0 4px}
.sc-grid .res-num{font-size:17px}
.sc-grid .res-lbl{font-size:10.5px}
.sc-scope{font-size:11.5px;color:var(--ink-3);text-align:center;margin:0;line-height:1.6}
.sc-thin{font-size:11px;color:#BA7517;background:#FAEEDA;border-radius:7px;
  padding:6px 9px;margin:8px 0 0;text-align:center;line-height:1.55}
.sess-sum{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 10px}
.sess-sum span{font-size:12px;color:var(--ink-2);background:#FCFBFE;border:1px solid var(--line);
  border-radius:8px;padding:5px 10px}
.sb-wrap{display:flex;align-items:flex-end;gap:6px;height:82px;padding:6px 10px 0;
  background:#FCFBFE;border:1px solid var(--line);border-radius:10px;overflow-x:auto}
.sb-col{flex:1;min-width:26px;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.sb-bar{display:block;width:100%;max-width:26px;border-radius:4px 4px 2px 2px;background:var(--purple-line)}
.sb-bar.g4{background:#3D9970}.sb-bar.g3{background:#7FB069}
.sb-bar.g2{background:#E8A33D}.sb-bar.g1{background:#D9534F}
.sb-v{font-size:10.5px;color:var(--ink-3);margin-top:3px;font-variant-numeric:tabular-nums}
.tblwrap-sess{max-height:38vh;overflow:auto;border:1px solid var(--line);border-radius:10px}
.sess-tbl{width:100%;border-collapse:collapse;font-size:12px}
.sess-tbl th{position:sticky;top:0;background:#F2EDF9;color:var(--purple);text-align:left;
  padding:7px 8px;font-weight:600;white-space:nowrap}
.sess-tbl td{padding:7px 8px;border-top:1px solid var(--line);vertical-align:middle;white-space:nowrap}
.sess-tbl tr:nth-child(even) td{background:#FDFCFE}
.chkbox{display:flex;flex-wrap:wrap;gap:6px 16px;margin:4px 0 2px}
.chk{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--ink-2);cursor:pointer;user-select:none}
.chk input{width:15px;height:15px;accent-color:var(--purple);cursor:pointer;margin:0}
.sess-scope{font-size:10.5px;color:var(--ink-3)}
.auth-err{
  font-size:12.5px;color:var(--bad);background:var(--bad-soft);
  padding:8px 11px;border-radius:9px;margin-bottom:12px;line-height:1.5;
}
.auth-submit{width:100%;padding:12px;font-size:15px;border-radius:11px}
.auth-switch{font-size:12.5px;color:var(--ink-3);text-align:center;margin-top:14px}
.auth-switch a{color:var(--purple);text-decoration:none;font-weight:500}
.auth-switch a:hover{text-decoration:underline}
.auth-note{
  font-size:11.5px;color:var(--ink-3);text-align:center;margin-top:12px;
  line-height:1.65;padding-top:12px;border-top:1px dashed var(--line);
}
.auth-skip{
  display:block;width:100%;margin-top:12px;border:0;background:transparent;
  color:var(--ink-3);font-size:12.5px;cursor:pointer;font-family:inherit;padding:6px;
}
.auth-skip:hover{color:var(--purple)}

/* ---------- 跟读发音校对 ---------- */
.assess{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);text-align:center}
.btn.mic{
  background:linear-gradient(135deg,#5B2D8E,#7B4DB8);color:#fff;border:0;
  padding:10px 22px;border-radius:999px;font-size:14px;font-weight:600;
  cursor:pointer;font-family:inherit;transition:transform .16s,box-shadow .16s;
}
.btn.mic:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 16px rgba(91,45,142,.3)}
.btn.mic:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.assess-out{
  margin-top:11px;font-size:13px;color:var(--ink-3);line-height:1.6;
  min-height:20px;border-radius:11px;padding:0 4px;
}
.assess-out.listening{
  color:var(--purple);background:var(--purple-soft);
  padding:12px;display:flex;align-items:center;justify-content:center;gap:9px;
}
.wave{
  width:11px;height:11px;border-radius:50%;background:var(--purple);flex:none;
  animation:pulse 1s infinite ease-in-out;
}
@keyframes pulse{0%,100%{transform:scale(.65);opacity:.45}50%{transform:scale(1.2);opacity:1}}
.assess-out.great,.assess-out.good,.assess-out.ok,.assess-out.bad{
  padding:12px 14px;display:flex;align-items:center;gap:13px;text-align:left;
}
.assess-out.great{background:var(--ok-soft);color:#166F52}
.assess-out.good{background:#EAF2FE;color:#1B5FA8}
.assess-out.ok{background:var(--warn-soft);color:#8E5A10}
.assess-out.bad{background:var(--bad-soft);color:#A9302C}
.assess-out .score{
  display:inline-flex;align-items:baseline;gap:3px;font-weight:700;
  color:inherit;flex:none;
}
.assess-out .score b{font-size:27px;line-height:1}
.assess-out .score span{font-size:11px;opacity:.8}
.assess-out .sc-body{min-width:0}
.assess-out .sc-msg{font-weight:600;font-size:13.5px}
.assess-out .sc-heard{font-size:12px;opacity:.85;margin-top:2px;word-break:break-word}
.assess-btns{display:flex;flex-wrap:wrap;gap:9px;justify-content:center}
.btn.mic.alt{background:linear-gradient(135deg,#1A5F7A,#2E86A8)}
.btn.mic.alt:hover:not(:disabled){box-shadow:0 6px 16px rgba(26,95,122,.3)}
.play-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:10px}
.play-row .btn.ok{background:var(--ok);color:#fff;border:0}
.play-row .btn.sm{padding:8px 15px;font-size:13px;border-radius:999px}

.wl-more{
  font-size:11.5px;color:var(--ink-3);text-align:center;
  padding:7px 4px;margin:3px 0;background:var(--bg);border-radius:8px;
}

.hidden{display:none !important}

/* ---------- 页脚 · 关于我们 ---------- */
.app-footer{
  max-width:1180px;margin:6px auto 30px;padding:18px 16px 0;
  border-top:1px solid var(--line);text-align:center;
}
.app-footer .af-row{
  font-size:12.5px;color:var(--ink-3);line-height:2;letter-spacing:.2px;
}
.app-footer b{color:var(--purple);font-weight:700}
.app-footer a{
  color:var(--purple);text-decoration:none;font-weight:700;letter-spacing:.4px;
  border-bottom:1px dashed var(--purple-line);padding-bottom:1px;
}
.app-footer a:active{opacity:.65}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .layout{grid-template-columns:1fr;padding:14px}
  .side{position:static;order:2}
  .main-panel{order:1}
  .options{grid-template-columns:1fr}
  .res-grid{grid-template-columns:1fr 1fr}
  .big-word{font-size:36px}
  .big-cn{font-size:27px}
  .dict-input{font-size:24px;letter-spacing:2px;padding:8px 10px}
  .app-header{flex-direction:column;align-items:flex-start;gap:10px}
}

/* ---------- 阅读 / 完型 ---------- */
.psg{
  width:100%;max-width:660px;background:#FBF9FE;border:1px solid var(--line);
  border-radius:12px;padding:14px 16px;margin-bottom:16px;text-align:left;
}
.psg-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:6px}
.psg-title{font-size:14.5px;font-weight:700;color:var(--purple)}
.psg-sub{font-size:11.5px;color:var(--ink-3);margin-left:auto}
.psg-fold{
  border:1px solid var(--line);background:#fff;color:var(--ink-2);border-radius:7px;
  font-size:11.5px;padding:3px 9px;cursor:pointer;font-family:inherit;flex-shrink:0;
}
.psg-fold:hover{border-color:var(--purple);color:var(--purple)}
.psg-topic{font-size:12px;color:var(--ink-3);margin:0 0 8px;font-style:italic}
.psg-text{
  font-family:"Georgia","Times New Roman",serif;font-size:15.5px;line-height:1.95;
  color:var(--ink);max-height:46vh;overflow-y:auto;padding-right:4px;
}
.psg-cn{
  font-size:13px;line-height:1.85;color:var(--ink-2);margin-top:10px;
  padding-top:10px;border-top:1px dashed var(--line);
}
.psg-cnbtn{
  margin-top:8px;border:1px dashed var(--line);background:transparent;color:var(--ink-3);
  font-size:11.5px;padding:3px 10px;border-radius:7px;cursor:pointer;font-family:inherit;
}
.psg-cnbtn:hover{border-color:var(--purple);color:var(--purple)}
.cloze-blank{
  display:inline-block;min-width:52px;text-align:center;font-weight:700;
  border-bottom:2px solid var(--purple);color:var(--purple);padding:0 4px;
  font-family:-apple-system,"PingFang SC",sans-serif;font-size:14px;
}
.cloze-blank.on{background:var(--purple-soft)}
.cloze-blank.ok{color:#0F6E56;border-bottom-color:var(--ok)}
.cloze-blank.no{color:#8F2A26;border-bottom-color:var(--bad)}
.psg-q{width:100%;max-width:660px;text-align:left}
.psg-qhead{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;gap:8px;flex-wrap:wrap}
.psg-qno{font-size:12px;font-weight:700;color:var(--purple);background:var(--purple-soft);padding:3px 10px;border-radius:20px}
.psg-prog{font-size:11.5px;color:var(--ink-3)}
.psg-stem{font-size:15px;line-height:1.7;color:var(--ink);margin-bottom:12px;font-weight:600}
.psg-fb{text-align:left}
.psg-fb .fb-title{font-size:13.5px;font-weight:700;margin-bottom:6px}
.psg-fb .fb-row{font-size:12.5px;line-height:1.75;margin-top:3px}
.psg-fb .fb-row b{opacity:.72;margin-right:2px}
.psg-kps{
  text-align:left;background:var(--purple-soft);border-radius:11px;padding:12px 16px;margin-top:14px;font-size:13px;
}
.psg-kps b{color:var(--purple)}
.psg-kps ul{margin:6px 0 0;padding-left:20px;line-height:1.8;color:var(--ink-2);font-size:12.5px}
.psg-wrong{text-align:left;max-height:420px;overflow-y:auto}
.pw-row{background:#fff;border:1px solid var(--line);border-left:3px solid var(--bad);border-radius:9px;padding:10px 13px;margin-bottom:8px}
.pw-h{display:flex;align-items:center;gap:8px;margin-bottom:5px;flex-wrap:wrap}
.pw-badge{font-size:11px;font-weight:700;color:#8F2A26;background:var(--bad-soft);padding:2px 8px;border-radius:20px}
.pw-art{font-size:11.5px;color:var(--ink-3)}
.pw-q{font-size:13px;line-height:1.7;color:var(--ink);margin-bottom:4px}
.pw-a{font-size:12.5px;color:#0F6E56;line-height:1.7}
.pw-e{font-size:12.5px;color:var(--ink-2);line-height:1.7;margin-top:3px}
.psg-word{cursor:pointer}
@media (max-width:980px){
  .psg{padding:12px 13px}
  .psg-text{font-size:14.5px;max-height:none}
}

/* ---------- 作文板块 ---------- */
.wr-head{margin-bottom:12px}
.wr-title{font-size:19px;font-weight:700;color:var(--purple);line-height:1.4}
.wr-scene{font-size:12.5px;color:var(--ink-3);margin-top:4px;line-height:1.7}
.wr-prompt{
  text-align:left;background:var(--purple-soft);border-radius:11px;padding:12px 15px;margin-bottom:14px;
}
.wr-prompt-h{font-size:12px;font-weight:700;color:var(--purple);margin-bottom:6px}
.wr-prompt-en{font-family:Georgia,"Times New Roman",serif;font-size:14px;line-height:1.8;color:var(--ink)}
.wr-prompt-cn{font-size:12.5px;color:var(--ink-2);line-height:1.8;margin-top:5px}
.wr-block{text-align:left;margin-top:14px}
.wr-block-h{font-size:13.5px;font-weight:700;color:var(--ink);margin-bottom:8px;display:flex;align-items:baseline;gap:8px}
.wr-n{font-size:11px;font-weight:500;color:var(--ink-3);background:var(--line);padding:1px 8px;border-radius:20px}
.wr-row{display:flex;gap:10px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:9px;padding:9px 12px;margin-bottom:7px}
.wr-spk{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);background:var(--purple-soft);
  color:var(--purple);font-size:14px;cursor:pointer;line-height:1;padding:0;
}
.wr-spk:active{transform:scale(.94)}
.wr-txt{flex:1;min-width:0}
.wr-en{font-family:Georgia,"Times New Roman",serif;font-size:14px;line-height:1.65;color:var(--ink);word-break:break-word}
.wr-cn{font-size:12.5px;line-height:1.7;color:var(--ink-2);margin-top:2px}
.wr-kp{font-size:11px;color:var(--purple);background:var(--purple-soft);padding:1px 7px;border-radius:20px;margin-left:6px;white-space:nowrap}
.wr-tips{text-align:left;background:var(--purple-soft);border-radius:11px;padding:11px 16px;margin-top:14px;font-size:12.5px;color:var(--ink-2)}
.wr-tips b{color:var(--purple)}
.wr-tips ul{margin:6px 0 0;padding-left:20px;line-height:1.85}
.wr-dinfo{font-size:12px;color:var(--ink-3);margin-bottom:10px}
.wr-model-en{
  text-align:left;font-family:Georgia,"Times New Roman",serif;font-size:15px;line-height:2;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:11px;padding:15px 17px;
}
.wr-model-cn{
  text-align:left;font-size:12.5px;line-height:1.9;color:var(--ink-2);margin-top:10px;
  background:var(--purple-soft);border-radius:11px;padding:12px 15px;
}
@media (max-width:980px){
  .wr-title{font-size:17px}
  .wr-model-en{font-size:14px;line-height:1.85}
}

/* 8 个板块的 tab 行：窄屏收紧内边距，避免撑出容器 */
@media (max-width:640px){
  .tab{padding:7px 12px;font-size:13px}
  .tabs{gap:5px}
}

/* 师生任务 UI */
.task-list{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.task-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid var(--purple-line);border-radius:12px;background:#FCFBFE}
.task-main{flex:1;min-width:0}
.task-title{font-size:15px;font-weight:700;color:var(--ink)}
.task-meta{font-size:12.5px;color:#6b6580;margin-top:3px}
.task-teacher{font-size:12px;color:#918DA0;margin-top:2px}
.fld .opt{color:#918DA0;font-weight:500;font-size:11px;margin-left:2px}

/* 课文跟读（跟读板块的「课文」子模式） */
.text-read-head{margin:0 0 10px}
.tr-title{font-size:20px;font-weight:800;color:var(--purple,#5B2D8E)}
.tr-topic{font-size:13px;color:#918DA0;margin-top:2px}
.text-read-body{font-size:18px;line-height:2;color:#2b2733;max-width:780px}
.tr-sent{padding:6px 10px;border-radius:10px;cursor:pointer;transition:background .15s,border-color .15s;margin:2px 0}
.tr-sent:hover{background:#f3edfb}
.tr-sent.on{background:#efe6fb;border:1px solid var(--purple,#5B2D8E);color:var(--purple,#5B2D8E);font-weight:600}
.tr-cn{margin-top:12px;font-size:14px;color:#5A5766;max-width:780px}
.tr-cn summary{cursor:pointer;color:var(--purple,#5B2D8E);font-size:13px}
.tr-cn-body{margin-top:6px;white-space:pre-wrap;line-height:1.9}
.tr-ctrls{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}