:root{
  --bg:#f6f7fb; --card:#ffffff; --ink:#1f2430; --ink-2:#6b7280; --ink-3:#9aa3af;
  --line:#e8eaf1; --brand:#16a34a; --brand-2:#22c55e; --brand-soft:#e8f8ee;
  --warn:#f59e0b; --warn-soft:#fef6e7; --bad:#ef4444; --bad-soft:#feecec;
  --shadow:0 8px 24px rgba(24,32,56,.08); --shadow-sm:0 2px 8px rgba(24,32,56,.06);
  --r:18px; --r-sm:12px;
}
[data-theme="yyq"]{
  --brand:#7c3aed; --brand-2:#a855f7; --brand-soft:#f1eafe;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%}
/* 关键：hidden 属性必须压过下面的 display:flex / display:block，
   否则 #sheet #tabbar #toast 会一直显示并挡住点击 */
[hidden]{display:none !important}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:16px;line-height:1.45;
  overscroll-behavior-y:none;
}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
#app{max-width:560px;margin:0 auto;min-height:100%;display:flex;flex-direction:column;
  background:var(--bg);position:relative}
@media(min-width:900px){ #app{max-width:860px} }

/* ── 顶栏 ── */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:8px;
  padding:14px 16px 10px;background:rgba(246,247,251,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.topbar-title{display:flex;flex-direction:column;min-width:0;flex:1}
#topTitle{font-weight:800;font-size:18px;letter-spacing:.2px;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis}
.top-sub{font-size:12px;color:var(--ink-3);margin-top:1px}
.top-right{display:flex;align-items:center;gap:8px}
.icon-btn{width:34px;height:34px;border-radius:50%;background:var(--card);
  box-shadow:var(--shadow-sm);font-size:22px;line-height:1;display:grid;place-items:center;
  color:var(--ink-2)}
.chip{display:inline-flex;align-items:center;gap:4px;padding:5px 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700}

/* ── 视图 ── */
.view{flex:1;padding:16px 16px 96px;display:block}
.view.center{display:grid;place-items:center}

/* ── 首页模块卡 ── */
.hero{padding:6px 2px 16px}
.hero h1{margin:0 0 6px;font-size:26px;letter-spacing:-.4px}
.hero p{margin:0;color:var(--ink-2);font-size:14px}
.modules{display:grid;gap:14px;margin-top:6px}
@media(min-width:720px){ .modules{grid-template-columns:1fr 1fr} }
.module{position:relative;overflow:hidden;border-radius:22px;padding:20px 18px 18px;
  color:#fff;box-shadow:var(--shadow);cursor:pointer;transition:.18s transform}
.module:active{transform:scale(.985)}
.module.m1{background:linear-gradient(135deg,#0ea5a4,#16a34a 55%,#4ade80)}
.module.m2{background:linear-gradient(135deg,#6d28d9,#a855f7 55%,#ec4899)}
.module .m-tag{font-size:12px;opacity:.85;letter-spacing:.4px}
.module .m-name{font-size:22px;font-weight:800;margin:4px 0 2px;letter-spacing:-.3px}
.module .m-desc{font-size:13px;opacity:.9;min-height:20px}
.module .m-stat{display:flex;gap:16px;margin-top:14px;font-size:13px;opacity:.95}
.module .m-stat b{font-size:18px;display:block;line-height:1.1}
.m-bar{height:6px;border-radius:99px;background:rgba(255,255,255,.28);margin-top:14px;overflow:hidden}
.m-bar > i{display:block;height:100%;background:#fff;border-radius:99px;transition:.4s width}
.module .m-go{position:absolute;right:16px;bottom:16px;font-weight:800;font-size:13px;
  background:rgba(255,255,255,.2);padding:7px 12px;border-radius:999px}
.home-foot{margin-top:22px;color:var(--ink-3);font-size:12px;text-align:center;line-height:1.7}

/* ── 卡片 ── */
.study-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.study-top .q{font-size:13px;color:var(--ink-2);font-weight:600}
.study-top .q b{color:var(--ink)}
.pbar{height:8px;background:var(--line);border-radius:99px;overflow:hidden;margin-bottom:16px}
.pbar > i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));
  border-radius:99px;transition:.35s width}

.flip{perspective:1400px;margin:6px 0 18px}
.flip-inner{position:relative;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.3,1.2,.5,1);
  min-height:340px}
.flip.flipped .flip-inner{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  background:var(--card);border-radius:24px;box-shadow:var(--shadow);
  padding:26px 22px;display:flex;flex-direction:column;overflow:auto}
.face.back{transform:rotateY(180deg)}
.front-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.pos-tag{font-size:12px;font-weight:800;color:var(--brand);background:var(--brand-soft);
  padding:3px 9px;border-radius:999px}
.word{font-size:40px;font-weight:800;letter-spacing:-1px;margin:16px 0 6px;word-break:break-word}
.ipa{color:var(--ink-3);font-size:15px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.mean{font-size:22px;font-weight:700;margin-top:20px;line-height:1.35}
.mean-sub{color:var(--ink-2);font-size:14px;margin-top:8px}
.front-hint{margin-top:auto;color:var(--ink-3);font-size:13px;text-align:center;padding-top:16px}
.back-h{font-size:12px;font-weight:800;color:var(--ink-3);letter-spacing:.6px;margin:0 0 6px}
.back-row{margin-bottom:16px}
.back-row:last-child{margin-bottom:0}
.ex{font-size:15px;color:var(--ink);line-height:1.55}
.colloc{font-size:14px;color:var(--ink-2);line-height:1.6}
.colloc code{background:var(--bg);padding:1px 6px;border-radius:6px;margin-right:4px;
  display:inline-block;margin-bottom:4px;font-family:inherit;font-size:13px}
.syn{font-size:14px;color:var(--ink-2)}
.song-line{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-2)}
.song-line b{color:var(--ink)}
.lyric-box{background:linear-gradient(180deg,#faf7ff,#f4efff);border:1px solid #e9defc;
  border-radius:14px;padding:12px 14px;margin-top:8px}
[data-theme="ielts"] .lyric-box{background:var(--bg);border-color:var(--line)}
.lyric-text{font-size:15px;font-style:italic;color:#5b21b6;line-height:1.6}
[data-theme="ielts"] .lyric-text{color:var(--ink-2)}
.lyric-text mark{background:#fde68a;color:#7c2d12;border-radius:4px;padding:0 2px;font-weight:700}
[data-theme="ielts"] .lyric-text mark{background:#fef3c7;color:#92400e}
.lyric-tools{display:flex;align-items:center;gap:8px;margin-top:10px;flex-wrap:wrap}
.mini-btn{display:inline-flex;align-items:center;gap:5px;padding:7px 11px;border-radius:999px;
  background:var(--card);border:1px solid var(--line);font-size:12.5px;font-weight:700;
  color:var(--ink-2);text-decoration:none}
.mini-btn:active{transform:scale(.97)}
.mini-btn.play{background:var(--brand);color:#fff;border-color:transparent}
.speaking .lyric-text{animation:pulse 1.1s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.55}}

/* 评分按钮 */
.actions{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;position:sticky;bottom:84px}
.act{padding:15px 8px;border-radius:16px;font-weight:800;font-size:15px;text-align:center;
  box-shadow:var(--shadow-sm);transition:.15s transform}
.act:active{transform:scale(.97)}
.act small{display:block;font-weight:600;font-size:11px;opacity:.75;margin-top:2px}
.act.bad{background:var(--bad-soft);color:#b91c1c}
.act.fuzzy{background:var(--warn-soft);color:#b45309}
.act.ok{background:var(--brand);color:#fff}
.flip-hint{text-align:center;color:var(--ink-3);font-size:12.5px;margin-bottom:8px}

/* ── 词库 ── */
.toolbar{display:flex;gap:8px;margin-bottom:12px}
.search{flex:1;display:flex;align-items:center;gap:8px;background:var(--card);border-radius:14px;
  padding:10px 12px;box-shadow:var(--shadow-sm)}
.search input{border:0;outline:0;flex:1;font-size:15px;background:none;color:var(--ink)}
.filters{display:flex;gap:8px;overflow-x:auto;padding-bottom:10px;margin-bottom:4px;
  scrollbar-width:none}
.filters::-webkit-scrollbar{display:none}
.fchip{white-space:nowrap;padding:7px 13px;border-radius:999px;background:var(--card);
  box-shadow:var(--shadow-sm);font-size:13px;font-weight:700;color:var(--ink-2)}
.fchip.on{background:var(--ink);color:#fff}
.list{display:grid;gap:8px}
.row{display:flex;align-items:center;gap:12px;background:var(--card);border-radius:14px;
  padding:12px 14px;box-shadow:var(--shadow-sm);cursor:pointer}
.row:active{transform:scale(.995)}
.dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto;background:#d1d5db}
.dot.s1{background:var(--warn)} .dot.s2{background:var(--brand)}
.row-main{min-width:0;flex:1}
.row-w{font-weight:700;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-m{font-size:13px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-x{font-size:12px;color:var(--ink-3);text-align:right;white-space:nowrap}
.more{display:block;width:100%;margin:14px 0 0;padding:13px;border-radius:14px;
  background:var(--card);box-shadow:var(--shadow-sm);font-weight:700;color:var(--ink-2)}
.empty{text-align:center;color:var(--ink-3);padding:48px 20px;font-size:14px;line-height:1.8}

/* ── 检测 ── */
.quiz-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;
  font-size:13px;color:var(--ink-2);font-weight:600}
.qcard{background:var(--card);border-radius:22px;box-shadow:var(--shadow);padding:26px 22px;
  text-align:center;margin-bottom:18px}
.q-label{font-size:12px;font-weight:800;color:var(--ink-3);letter-spacing:.6px}
.q-word{font-size:34px;font-weight:800;margin:10px 0 4px;letter-spacing:-.8px;word-break:break-word}
.q-ipa{color:var(--ink-3);font-size:14px;font-family:ui-monospace,Menlo,monospace}
.q-mean{font-size:22px;font-weight:700;margin:8px 0 0;line-height:1.35}
.options{display:grid;gap:10px}
.opt{padding:15px 16px;border-radius:16px;background:var(--card);box-shadow:var(--shadow-sm);
  font-weight:700;font-size:15.5px;text-align:left;transition:.15s;display:flex;gap:10px;align-items:center}
.opt:active{transform:scale(.985)}
.opt .k{width:24px;height:24px;flex:0 0 auto;border-radius:8px;background:var(--bg);
  display:grid;place-items:center;font-size:12px;color:var(--ink-3)}
.opt.ok{background:var(--brand-soft);color:#15803d;box-shadow:inset 0 0 0 2px var(--brand)}
.opt.no{background:var(--bad-soft);color:#b91c1c;box-shadow:inset 0 0 0 2px var(--bad)}
.opt[disabled]{opacity:.85}
.quiz-foot{margin-top:16px;display:grid;gap:10px}
.btn-primary{background:var(--brand);color:#fff;padding:15px;border-radius:16px;font-weight:800;
  font-size:16px;text-align:center;box-shadow:var(--shadow-sm)}
.btn-ghost{background:var(--card);color:var(--ink-2);padding:14px;border-radius:16px;
  font-weight:700;text-align:center;box-shadow:var(--shadow-sm)}

/* ── 进度 ── */
.cards2{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.stat{background:var(--card);border-radius:18px;padding:15px;box-shadow:var(--shadow-sm)}
.stat .lb{font-size:12px;color:var(--ink-3);font-weight:700}
.stat .vl{font-size:24px;font-weight:800;margin-top:3px;letter-spacing:-.5px}
.stat .vl small{font-size:13px;font-weight:700;color:var(--ink-3);margin-left:2px}
.panel{background:var(--card);border-radius:18px;padding:16px;box-shadow:var(--shadow-sm);
  margin-bottom:12px}
.panel h3{margin:0 0 12px;font-size:14px;letter-spacing:.2px}
.bars{display:grid;gap:10px}
.brow{display:flex;align-items:center;gap:10px;font-size:13px}
.brow .nm{width:96px;flex:0 0 auto;color:var(--ink-2);white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis}
.brow .tr{flex:1;height:9px;background:var(--bg);border-radius:99px;overflow:hidden}
.brow .tr > i{display:block;height:100%;background:var(--brand);border-radius:99px}
.brow .vv{width:52px;text-align:right;color:var(--ink-3);font-size:12px;font-weight:700}
.week{display:flex;align-items:flex-end;gap:8px;height:96px;padding-top:6px}
.week .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;
  justify-content:flex-end}
.week .bar{width:70%;background:linear-gradient(180deg,var(--brand-2),var(--brand));
  border-radius:8px 8px 4px 4px;min-height:4px}
.week .d{font-size:10px;color:var(--ink-3)}
.io{display:flex;gap:10px;margin-top:6px}

/* ── 底部导航 ── */
.tabbar{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:100%;max-width:560px;
  display:flex;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);padding:8px 6px calc(8px + env(safe-area-inset-bottom));z-index:20}
@media(min-width:900px){ .tabbar{max-width:860px} }
.tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:5px 2px;
  color:var(--ink-3);font-size:11px;font-weight:700;border-radius:12px}
.tab i{font-size:19px;font-style:normal;filter:grayscale(.4);opacity:.75}
.tab.active{color:var(--brand)}
.tab.active i{filter:none;opacity:1}

/* ── 弹层 ── */
.sheet{position:fixed;inset:0;z-index:50;display:flex;align-items:flex-end;justify-content:center}
.sheet-mask{position:absolute;inset:0;background:rgba(17,24,39,.42)}
.sheet-body{position:relative;width:100%;max-width:560px;background:var(--card);
  border-radius:24px 24px 0 0;padding:20px 20px calc(24px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 30px rgba(0,0,0,.16);max-height:86vh;overflow:auto;
  animation:up .26s cubic-bezier(.2,.9,.3,1)}
@keyframes up{from{transform:translateY(24px);opacity:.6}to{transform:none;opacity:1}}
.sheet-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:10px}
.sheet-w{font-size:28px;font-weight:800;letter-spacing:-.6px;word-break:break-word}
.toast{position:fixed;left:50%;bottom:92px;transform:translateX(-50%);background:#111827;
  color:#fff;font-size:13px;font-weight:700;padding:10px 16px;border-radius:999px;z-index:80;
  box-shadow:0 8px 24px rgba(0,0,0,.2);animation:fade .2s}
@keyframes fade{from{opacity:0;transform:translate(-50%,6px)}to{opacity:1;transform:translate(-50%,0)}}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

/* ── 每日计划 ── */
.plan-card{background:var(--card);border-radius:20px;padding:16px 16px 14px;
  box-shadow:var(--shadow);cursor:pointer;transition:.15s transform}
.plan-card:active{transform:scale(.99)}
.pc-top{display:flex;align-items:center;justify-content:space-between}
.pc-title{font-size:13px;font-weight:800;color:var(--ink)}
.pc-streak{font-size:12px;font-weight:700;color:var(--warn);background:var(--warn-soft);
  padding:3px 9px;border-radius:999px}
.pc-num{margin-top:8px;display:flex;align-items:baseline;gap:6px}
.pc-num b{font-size:30px;font-weight:800;letter-spacing:-1px;line-height:1}
.pc-num span{font-size:13px;color:var(--ink-3);font-weight:700}
.pc-bar{height:8px;background:var(--bg);border-radius:99px;overflow:hidden;margin-top:10px}
.pc-bar > i{display:block;height:100%;border-radius:99px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:.4s width}
.pc-bar.tall{height:11px;background:rgba(255,255,255,.25)}
.pc-bar.tall > i{background:#fff}
.pc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:10px;
  font-size:12px;color:var(--ink-3);font-weight:600}
.pc-go{color:var(--brand);font-weight:800}

.plan-main{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  border-radius:22px;padding:20px 18px 18px;box-shadow:var(--shadow);margin-bottom:12px}
.pm-label{font-size:12px;opacity:.85;font-weight:700;letter-spacing:.3px}
.pm-big{display:flex;align-items:baseline;gap:7px;margin:6px 0 12px}
.pm-big b{font-size:44px;font-weight:800;letter-spacing:-1.5px;line-height:1}
.pm-big span{font-size:14px;opacity:.88;font-weight:700}
.pm-tip{font-size:13px;opacity:.95;margin-top:11px;line-height:1.5}

.task-row{display:flex;align-items:center;gap:12px;padding:12px 0;cursor:pointer;
  border-bottom:1px solid var(--line)}
.task-row:last-child{border-bottom:0;padding-bottom:0}
.tr-main{flex:1;min-width:0}
.tr-nm{font-size:14.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tr-sub{font-size:12px;color:var(--ink-3);margin-top:2px}
.tr-bar{width:84px;height:8px;background:var(--bg);border-radius:99px;overflow:hidden;flex:0 0 auto}
.tr-bar > i{display:block;height:100%;background:var(--brand);border-radius:99px}
.tr-go{font-size:12px;font-weight:800;color:var(--brand);flex:0 0 auto;min-width:34px;
  text-align:right}

.goal-row{display:flex;align-items:center;justify-content:center;gap:22px;padding:6px 0}
.round-btn{width:44px;height:44px;border-radius:50%;background:var(--bg);font-size:22px;
  font-weight:800;color:var(--ink-2);display:grid;place-items:center}
.round-btn:active{transform:scale(.94)}
.goal-v{text-align:center;min-width:96px}
.goal-v b{font-size:30px;font-weight:800;letter-spacing:-1px}
.goal-v span{display:block;font-size:12px;color:var(--ink-3);font-weight:700;margin-top:-2px}

/* 存储不可用时的提示条 */
.banner{position:fixed;left:50%;transform:translateX(-50%);top:8px;width:calc(100% - 24px);
  max-width:520px;background:#fff7ed;border:1px solid #fdba74;color:#9a3412;border-radius:14px;
  padding:11px 14px;font-size:12.5px;line-height:1.55;z-index:90;box-shadow:0 8px 24px rgba(154,52,18,.12)}
.banner b{color:#7c2d12}

/* 正面的中文释义：先模糊，点一下才清晰 */
.mean-wrap{cursor:pointer;margin-top:22px;-webkit-user-select:none;user-select:none}
.mean-wrap .mean{margin-top:0}
.mean-content{filter:blur(8px);transition:filter .22s ease;will-change:filter}
.mean-wrap.shown .mean-content{filter:none}
.reveal-tip{font-size:12.5px;color:var(--ink-3);font-weight:700;margin-top:10px;letter-spacing:.2px}
.mean-wrap.shown .reveal-tip{display:none}
.meta-line{margin-top:14px}

/* ── 登录 / 账号 ── */
.auth{max-width:420px;margin:8px auto 0}
.auth-hero{text-align:center;padding:18px 0 22px}
.auth-logo{font-size:44px;line-height:1}
.auth-hero h1{margin:10px 0 4px;font-size:24px;letter-spacing:-.4px}
.auth-hero p{margin:0;color:var(--ink-3);font-size:13px}
.auth-tabs{display:flex;background:var(--card);border-radius:14px;padding:4px;box-shadow:var(--shadow-sm)}
.auth-tabs button{flex:1;padding:9px;border-radius:11px;font-weight:800;font-size:14px;color:var(--ink-3)}
.auth-tabs button.on{background:var(--brand);color:#fff}
.auth-form{margin-top:14px;background:var(--card);border-radius:20px;padding:18px;
  box-shadow:var(--shadow)}
.field{display:block;margin-bottom:10px}
.field input{width:100%;padding:13px 14px;border-radius:13px;border:1px solid var(--line);
  background:var(--bg);font-size:15px;color:var(--ink);outline:none}
.field input:focus{border-color:var(--brand);background:#fff}
.auth .only-reg{display:none}
.auth.reg-mode .only-reg{display:flex}
.avatar-pick{display:flex;align-items:center;gap:12px;cursor:pointer;
  padding:4px 0 12px;font-size:13px;color:var(--ink-3);font-weight:700}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--bg) center/cover no-repeat;
  display:grid;place-items:center;font-weight:800;color:var(--ink-3);flex:0 0 auto;
  border:1px solid var(--line)}
.avatar.pick{width:68px;height:68px;font-size:24px}
.avatar.big{width:52px;height:52px;font-size:20px}
.auth-err{display:none;color:#b91c1c;background:var(--bad-soft);border-radius:10px;
  padding:9px 12px;font-size:13px;font-weight:700;margin-top:10px}
.auth-tip{font-size:11.5px;color:var(--ink-3);line-height:1.6;margin:14px 0 0}
.acc-row{display:flex;align-items:center;gap:12px}
.acc-main{flex:1;min-width:0}
.acc-nick{font-weight:800;font-size:16px}
.acc-user{font-size:12.5px;color:var(--ink-3)}

/* 顶栏账号按钮（常驻，点了出退出菜单） */
.avatar-btn{width:36px;height:36px;border-radius:50%;flex:0 0 auto;margin-left:2px;
  background:var(--brand) center/cover no-repeat;color:#fff;font-weight:800;font-size:14px;
  display:grid;place-items:center;box-shadow:var(--shadow-sm);border:2px solid #fff}
.avatar-btn:active{transform:scale(.94)}

/* 顶栏同步状态 */
.sync-chip{font-size:11px;font-weight:700;padding:4px 8px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);white-space:nowrap;flex:0 0 auto}
.sync-chip.saving{background:#eef2ff;color:#4f46e5}
.sync-chip.ok{background:var(--brand-soft);color:var(--brand)}
.sync-chip.err{background:var(--warn-soft);color:#b45309}