/* ===== 唱学英语 · 设计系统 ===== */
:root{
  --bg:#f6f4f0;
  --bg-2:#efece6;
  --surface:#ffffff;
  --surface-2:#fbf9f6;
  --line:#e7e1d8;
  --line-2:#f0ebe3;
  --ink:#221e1a;
  --ink-2:#5d554c;
  --ink-3:#948a7e;
  --accent:#cf5133;
  --accent-2:#e8743f;
  --accent-soft:#fbeee8;
  --teal:#2c6b64;
  --teal-soft:#e9f2f0;
  --gold:#a8813a;
  --gold-soft:#f8f1e2;
  --shadow-s:0 1px 2px rgba(34,30,26,.05), 0 2px 8px rgba(34,30,26,.04);
  --shadow-m:0 2px 6px rgba(34,30,26,.06), 0 12px 32px rgba(34,30,26,.07);
  --shadow-l:0 8px 20px rgba(34,30,26,.08), 0 32px 64px rgba(34,30,26,.12);
  --r-s:10px; --r-m:14px; --r-l:20px;
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --serif:Georgia,"Times New Roman","Songti SC",serif;
  --side:232px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink); font-family:var(--font);
  font-size:14px; line-height:1.6; -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
body.has-player{padding-bottom:96px}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select{font-family:inherit}
::selection{background:#f6d9cd}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#ddd5c9;border-radius:8px;border:3px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:#c9bfae;background-clip:content-box;border:3px solid transparent}
::-webkit-scrollbar-track{background:transparent}

/* ===== 侧边栏 ===== */
.app{display:flex;min-height:100vh}
.sidebar{
  width:var(--side); flex:0 0 var(--side); background:var(--surface);
  border-right:1px solid var(--line); position:sticky; top:0; height:100vh;
  display:flex; flex-direction:column; padding:22px 14px 16px; z-index:20;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 36px;
  background:linear-gradient(140deg,#e8743f,#cf5133 60%,#a83b22);
  display:grid;place-items:center;color:#fff;font-size:17px;
  box-shadow:0 4px 12px rgba(207,81,51,.28);
}
.brand-txt b{display:block;font-size:15px;letter-spacing:.02em;line-height:1.25}
.brand-txt span{font-size:11px;color:var(--ink-3);letter-spacing:.06em}
.nav{display:flex;flex-direction:column;gap:2px;margin-top:4px}
.nav-item{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;
  color:var(--ink-2);font-size:13.5px;transition:.16s;position:relative;
}
.nav-item .ico{width:18px;height:18px;flex:0 0 18px;opacity:.75}
.nav-item:hover{background:var(--surface-2);color:var(--ink)}
.nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:600}
.nav-item.active .ico{opacity:1}
.nav-label{font-size:10.5px;color:var(--ink-3);letter-spacing:.12em;padding:16px 10px 6px;text-transform:uppercase}
.side-foot{margin-top:auto;padding:12px 8px 0;border-top:1px solid var(--line-2)}
.mini-stats{display:flex;flex-direction:column;gap:7px;font-size:11.5px;color:var(--ink-3)}
.mini-stats b{color:var(--ink);font-size:12.5px;font-variant-numeric:tabular-nums}
.mini-row{display:flex;justify-content:space-between;align-items:baseline}

/* ===== 账号区 ===== */
.user-box{margin-top:12px;padding-top:12px;border-top:1px solid var(--line-2)}
.user-row{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-2);min-width:0}
.user-row b{font-weight:600;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-dot{width:6px;height:6px;border-radius:50%;background:#3aa060;flex:0 0 6px;box-shadow:0 0 0 3px rgba(58,160,96,.15)}
.user-acts{margin-top:6px}
.user-hint{font-size:10.5px;color:var(--ink-3);margin-top:5px;line-height:1.5}
.link-btn{font-size:11.5px;color:var(--ink-3);padding:0;transition:.15s}
.link-btn:hover{color:var(--accent)}
.speak-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;color:var(--ink-3);
  vertical-align:middle;transition:.15s;flex:0 0 auto;
}
.speak-btn:hover{color:var(--accent);background:var(--accent-soft)}
.speak-btn:active{transform:scale(.9)}
.speak-btn svg{width:15px;height:15px}
.login-entry{
  display:block;width:100%;text-align:center;padding:7px 0;border-radius:8px;
  background:var(--accent-soft);color:var(--accent);font-weight:600;font-size:12px;
}
.login-entry:hover{background:#f8e2d8;color:var(--accent)}

/* ===== 登录遮罩 ===== */
.login-mask{
  position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:24px;
  background:rgba(30,26,22,.55);backdrop-filter:blur(6px);animation:fade .25s;
}
.login-card{
  background:var(--surface);border-radius:20px;box-shadow:var(--shadow-l);
  width:100%;max-width:360px;padding:30px 28px 22px;text-align:center;
  animation:pop .3s cubic-bezier(.3,1.3,.5,1);
}
.login-brand{margin-bottom:14px}
.login-mark{
  display:inline-grid;place-items:center;width:46px;height:46px;border-radius:14px;
  background:linear-gradient(140deg,#e8743f,#cf5133 60%,#a83b22);color:#fff;font-size:21px;
  box-shadow:0 6px 18px rgba(207,81,51,.3);
}
.login-card h2{font-size:19px;margin:0 0 6px;letter-spacing:-.01em}
.login-sub{font-size:12.5px;color:var(--ink-3);margin:0 0 20px;line-height:1.6}
.login-body{min-height:150px;display:grid;place-items:center}
.login-qr{width:200px;height:200px;border-radius:12px;border:1px solid var(--line);padding:6px;background:#fff}
.login-tip{font-size:12px;color:var(--ink-3);margin-top:10px}
.login-loading{font-size:12.5px;color:var(--ink-3)}
.login-err{font-size:13px;color:var(--accent);line-height:1.8}
.login-err span{font-size:11px;color:var(--ink-3)}
.login-wx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 22px;border-radius:10px;background:#07c160;color:#fff;
  font-size:14px;font-weight:600;box-shadow:0 6px 18px rgba(7,193,96,.28);transition:.16s;
}
.login-wx-btn:hover{background:#06ad56;transform:translateY(-1px)}
.login-skip{
  margin-top:18px;font-size:11.5px;color:var(--ink-3);text-decoration:underline;
  text-underline-offset:3px;
}
.login-skip:hover{color:var(--ink-2)}
.login-note{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:11px;color:var(--ink-3);line-height:1.6;
}

/* ===== 主区 ===== */
.main{flex:1;min-width:0;padding:26px 34px 60px}
.page{max-width:1120px;margin:0 auto;animation:fade .32s ease both}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px;flex-wrap:wrap}
.page-head h1{font-size:24px;margin:0 0 4px;letter-spacing:-.01em;font-weight:700}
.page-head p{margin:0;color:var(--ink-3);font-size:13px}
.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:6px}

/* ===== 通用卡片 ===== */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s)}
.pad{padding:20px 22px}
.sec-title{display:flex;align-items:center;justify-content:space-between;margin:30px 0 14px}
.sec-title h2{font-size:15.5px;margin:0;font-weight:650;letter-spacing:-.01em}
.sec-title .more{font-size:12.5px;color:var(--ink-3)}
.sec-title .more:hover{color:var(--accent)}

/* ===== 首页 hero ===== */
.hero{
  position:relative;overflow:hidden;border-radius:22px;padding:28px 30px;
  background:linear-gradient(120deg,#2c2a27 0%,#403a33 48%,#5d4636 100%);
  color:#fdfaf5;box-shadow:var(--shadow-m);
  display:flex;gap:28px;align-items:center;justify-content:space-between;flex-wrap:wrap;
}
.hero::after{
  content:"";position:absolute;right:-90px;top:-110px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(232,116,63,.55),rgba(232,116,63,0) 68%);
}
.hero::before{
  content:"";position:absolute;right:80px;bottom:-140px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(44,107,100,.5),rgba(44,107,100,0) 70%);
}
.hero-txt{position:relative;z-index:2;max-width:560px}
.hero-txt .kicker{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:#e9b98f;font-weight:600}
.hero-txt h2{font-size:26px;line-height:1.35;margin:8px 0 10px;font-weight:700;letter-spacing:-.01em}
.hero-txt p{margin:0 0 18px;color:#cfc6bb;font-size:13px;line-height:1.7}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.hero-logout{
  font-size:11.5px;color:#b8ada0;padding:5px 10px;border-radius:8px;
  border:1px solid rgba(255,255,255,.16);transition:.15s;align-self:center;
}
.hero-logout:hover{color:#fdfaf5;border-color:rgba(255,255,255,.35)}
.btn{
  display:inline-flex;align-items:center;gap:7px;padding:9px 17px;border-radius:10px;
  font-size:13px;font-weight:600;transition:.18s;border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,#e8743f,#cf5133);color:#fff;box-shadow:0 6px 18px rgba(207,81,51,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(207,81,51,.36)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fdfaf5;border-color:rgba(255,255,255,.2);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.18)}
.btn-line{background:var(--surface);border-color:var(--line);color:var(--ink-2)}
.btn-line:hover{border-color:#d5cbbc;color:var(--ink);background:var(--surface-2)}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}

.ring-wrap{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:8px}
.ring{position:relative;width:132px;height:132px}
.ring svg{transform:rotate(-90deg)}
.ring-txt{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.ring-txt b{display:block;font-size:26px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.ring-txt span{font-size:10.5px;color:#cbbfae;letter-spacing:.1em}
.ring-cap{font-size:11.5px;color:#cbbfae;letter-spacing:.06em}

/* ===== 数据卡 ===== */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:15px 17px;box-shadow:var(--shadow-s)}
.stat i{display:block;width:27px;height:27px;border-radius:8px;margin-bottom:9px;display:grid;place-items:center;font-style:normal;font-size:13px}
.stat .n{font-size:21px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2}
.stat .l{font-size:11.5px;color:var(--ink-3);margin-top:2px}

/* ===== 歌曲卡 ===== */
.song-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:15px}
.song-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:14px;display:flex;gap:13px;cursor:pointer;transition:.2s;position:relative;overflow:hidden;
  box-shadow:var(--shadow-s);
}
.song-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:#ddd4c6}
.cover{
  width:58px;height:58px;flex:0 0 58px;border-radius:12px;display:grid;place-items:center;
  font-family:var(--serif);font-size:24px;color:#fff;position:relative;overflow:hidden;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);
}
.cover::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(255,255,255,.35),transparent 60%)}
.cover .eq{position:absolute;bottom:6px;right:6px;display:flex;gap:2px;align-items:flex-end;height:12px;z-index:2}
.cover .eq i{width:2px;background:rgba(255,255,255,.85);border-radius:1px;animation:eq 1s infinite ease-in-out}
.cover .eq i:nth-child(1){height:40%;animation-delay:0s}
.cover .eq i:nth-child(2){height:90%;animation-delay:.15s}
.cover .eq i:nth-child(3){height:60%;animation-delay:.3s}
@keyframes eq{0%,100%{transform:scaleY(.4)}50%{transform:scaleY(1)}}
.sc-body{min-width:0;flex:1;display:flex;flex-direction:column;justify-content:center}
.sc-title{font-size:14px;font-weight:650;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sc-cn{font-size:11.5px;color:var(--ink-3);margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sc-meta{display:flex;gap:6px;align-items:center;margin-top:7px;flex-wrap:wrap}
.pill{font-size:10px;padding:2px 7px;border-radius:20px;background:var(--surface-2);border:1px solid var(--line-2);color:var(--ink-3);white-space:nowrap;line-height:1.5}
.pill.lv-入门{background:var(--teal-soft);border-color:#d5e6e2;color:#2c6b64}
.pill.lv-进阶{background:var(--gold-soft);border-color:#eee0c4;color:#8d6a26}
.pill.lv-挑战{background:var(--accent-soft);border-color:#f6d9cd;color:#b84226}
.pill.done{background:#e9f5ec;border-color:#cfe7d6;color:#2f7a45}
.sc-progress{position:absolute;left:0;right:0;bottom:0;height:2.5px;background:var(--line-2)}
.sc-progress i{display:block;height:100%;background:linear-gradient(90deg,#e8743f,#cf5133)}

/* 筛选 */
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:18px}
.search{position:relative;flex:1;min-width:200px;max-width:340px}
.search input{
  width:100%;padding:9px 13px 9px 34px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);font-size:13px;color:var(--ink);outline:none;transition:.18s;
}
.search input:focus{border-color:#d8c9b6;box-shadow:0 0 0 3px rgba(207,81,51,.08)}
.search svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--ink-3)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{
  padding:6px 12px;border-radius:20px;font-size:12.5px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-2);transition:.16s;
}
.chip:hover{border-color:#d8c9b6;color:var(--ink)}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ===== 学习页 ===== */
.learn-head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.learn-head .cover{width:52px;height:52px;flex:0 0 52px;font-size:22px;border-radius:13px}
.learn-head h1{font-size:20px;margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.learn-head #markDone{flex:0 0 auto;align-self:center}
.learn-head .sub{font-size:12.5px;color:var(--ink-3);margin-top:2px}
.back-btn{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;color:var(--ink-2);transition:.16s;flex:0 0 34px;
}
.back-btn:hover{background:var(--surface-2);color:var(--ink)}
.song-intro{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);
  padding:11px 15px;font-size:12.5px;line-height:1.8;color:var(--ink-2);margin-bottom:14px;
  cursor:pointer;position:relative;box-shadow:var(--shadow-s);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.song-intro b{color:var(--accent);font-weight:650;margin-right:8px;font-size:11.5px;letter-spacing:.04em}
.song-intro.open{display:block}
.song-intro::after{content:"";position:absolute;right:12px;bottom:8px;width:0;height:0}

.learn-layout{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:18px;align-items:start}
.lyrics-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--shadow-s);overflow:hidden;display:flex;flex-direction:column;
  height:calc(100vh - 250px);min-height:420px;position:sticky;top:18px;
}
.lyrics-tools{
  display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line-2);
  background:var(--surface-2);flex-wrap:wrap;
}
.lyrics-tools .spacer{flex:1}
.tool-btn{
  display:inline-flex;align-items:center;gap:5px;font-size:12px;padding:5px 10px;border-radius:8px;
  color:var(--ink-2);border:1px solid transparent;transition:.15s;
}
.tool-btn:hover{background:#fff;border-color:var(--line)}
.tool-btn.on{background:var(--accent-soft);color:var(--accent);border-color:#f2d6ca;font-weight:600}
.lyrics-scroll{overflow-y:auto;padding:14px 8px 40px;flex:1;scroll-behavior:smooth;position:relative}
.lyric-line{
  display:grid;grid-template-columns:30px 1fr;gap:10px;padding:8px 12px 8px 6px;border-radius:10px;
  cursor:pointer;transition:background .18s;position:relative;
}
.lyric-line:hover{background:var(--surface-2)}
.lyric-line .idx{
  font-size:10.5px;color:#c8bfb2;text-align:right;padding-top:4px;font-variant-numeric:tabular-nums;
  user-select:none;
}
.lyric-line .en{
  font-family:var(--serif);font-size:16.5px;line-height:1.5;color:#3b352f;letter-spacing:.005em;
}
.lyric-line .zh{font-size:12.5px;color:var(--ink-3);margin-top:3px;line-height:1.5}
.lyric-line.active{background:linear-gradient(90deg,#fdf1ea,#fdf8f4)}
.lyric-line.active .en{color:#171310;font-weight:600}
.lyric-line.active .zh{color:#8a6a5a}
.lyric-line.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,#e8743f,#cf5133);
}
.lyric-line.has-note .idx::after{content:"•";color:var(--accent);margin-left:2px}
body.hide-zh .lyric-line .zh{filter:blur(5px);opacity:.55;transition:.2s}
body.hide-zh .lyric-line:hover .zh{filter:none;opacity:1}
body.hide-zh .lyric-line.active .zh{filter:none;opacity:1}

.w{cursor:pointer;border-radius:3px;padding:0 .5px;transition:.12s}
.w:hover{background:#ffe9c9;color:#7a4a12}
.w.vocab{border-bottom:1px solid rgba(207,81,51,.35);color:#a8402a}
.w.vocab:hover{background:#fbdfd4;border-bottom-color:transparent}
.w.saved{background:#f8f1e2;border-bottom-color:#c8a45c}

/* 右侧面板 */
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s);overflow:hidden}
.tabs{display:flex;gap:2px;padding:8px 10px 0;border-bottom:1px solid var(--line-2);background:var(--surface-2)}
.tab{
  padding:8px 13px;font-size:12.5px;color:var(--ink-3);border-radius:8px 8px 0 0;position:relative;
  transition:.16s;font-weight:500;
}
.tab:hover{color:var(--ink)}
.tab.on{color:var(--accent);background:var(--surface);font-weight:650}
.tab.on::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--accent)}
.tab .cnt{font-size:10px;opacity:.7;margin-left:3px}
.tab-body{padding:16px 18px;max-height:calc(100vh - 300px);overflow-y:auto;min-height:300px}

.note-en{font-family:var(--serif);font-size:17px;line-height:1.45;color:#1e1a16;margin:0 0 6px}
.note-zh{font-size:12.5px;color:var(--ink-3);margin:0 0 14px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.note-title{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:650;margin-bottom:8px}
.note-body{font-size:13.5px;line-height:1.85;color:#3d3831}
.note-body b{color:var(--accent);font-weight:650}
.empty{color:var(--ink-3);font-size:13px;text-align:center;padding:40px 10px;line-height:1.9}
.empty .big{font-size:26px;display:block;margin-bottom:8px;opacity:.5}

.vlist{display:flex;flex-direction:column;gap:2px}
.vrow{
  display:flex;align-items:center;gap:10px;padding:8px 8px;border-radius:9px;cursor:pointer;transition:.14s;
}
.vrow:hover{background:var(--surface-2)}
.vrow .word{font-family:var(--serif);font-size:15px;font-weight:600;color:#241f1a;min-width:0}
.vrow .phon{font-size:11px;color:var(--ink-3);font-family:var(--font)}
.vrow .mean{font-size:12px;color:var(--ink-2);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vrow .star{color:#c2b6a4;font-size:13px;flex:0 0 auto;padding:2px}
.vrow .star.on{color:var(--gold)}
.vrow .cnt{font-size:10.5px;color:var(--ink-3);background:var(--surface-2);border-radius:20px;padding:1px 7px;border:1px solid var(--line-2)}

/* 练习区 */
.practice{display:flex;flex-direction:column;gap:14px}
.p-block{border:1px solid var(--line);border-radius:var(--r-m);padding:14px 15px;background:var(--surface-2)}
.p-block h4{margin:0 0 4px;font-size:13px;font-weight:650}
.p-block p.hint{margin:0 0 11px;font-size:11.5px;color:var(--ink-3);line-height:1.6}
.dict-input{
  width:100%;padding:10px 12px;border-radius:9px;border:1px solid var(--line);background:#fff;
  font-family:var(--serif);font-size:14.5px;color:var(--ink);outline:none;transition:.16s;
}
.dict-input:focus{border-color:#d8c9b6;box-shadow:0 0 0 3px rgba(207,81,51,.07)}
.dict-fb{font-size:12.5px;margin-top:9px;line-height:1.7}
.dict-fb.ok{color:#2f7a45}
.dict-fb.bad{color:#b84226}
.dict-fb .ans{font-family:var(--serif);font-size:14px;color:var(--ink);display:block;margin-top:4px}

/* ===== 播放条 ===== */
.player{
  position:fixed;left:var(--side);right:0;bottom:0;height:88px;z-index:40;
  background:rgba(255,255,255,.92);backdrop-filter:blur(14px) saturate(1.4);
  border-top:1px solid var(--line);box-shadow:0 -6px 24px rgba(34,30,26,.06);
  display:flex;align-items:center;gap:18px;padding:0 26px;
}
.pl-song{display:flex;align-items:center;gap:11px;width:236px;flex:0 0 236px;min-width:0}
.pl-song .cover{width:44px;height:44px;flex:0 0 44px;font-size:18px;border-radius:10px}
.pl-song .t{font-size:13px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pl-song .a{font-size:11px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pl-mid{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;gap:4px}
.pl-btns{display:flex;align-items:center;gap:6px}
.pbtn{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:var(--ink-2);transition:.15s}
.pbtn:hover{background:var(--surface-2);color:var(--ink)}
.pbtn.play{width:42px;height:42px;background:linear-gradient(135deg,#e8743f,#cf5133);color:#fff;box-shadow:0 5px 14px rgba(207,81,51,.3)}
.pbtn.play:hover{transform:scale(1.05);background:linear-gradient(135deg,#e8743f,#cf5133)}
.pbtn.on{color:var(--accent);background:var(--accent-soft)}
.pl-progress{display:flex;align-items:center;gap:10px;width:100%;max-width:560px}
.pl-progress .time{font-size:10.5px;color:var(--ink-3);font-variant-numeric:tabular-nums;width:34px;text-align:center;flex:0 0 34px}
.bar{position:relative;flex:1;height:16px;display:flex;align-items:center;cursor:pointer}
.bar-track{height:4px;width:100%;background:#e6e0d6;border-radius:4px;overflow:hidden;position:relative}
.bar-fill{position:absolute;left:0;top:0;bottom:0;background:linear-gradient(90deg,#e8743f,#cf5133);border-radius:4px;width:0}
.bar-knob{
  position:absolute;width:11px;height:11px;border-radius:50%;background:#fff;border:2px solid var(--accent);
  top:50%;transform:translate(-50%,-50%);opacity:0;transition:opacity .15s;box-shadow:0 1px 4px rgba(0,0,0,.15);
}
.bar:hover .bar-knob{opacity:1}
.pl-right{display:flex;align-items:center;gap:6px;width:236px;flex:0 0 236px;justify-content:flex-end}
.speed-btn{font-size:11.5px;padding:4px 9px;border-radius:7px;border:1px solid var(--line);color:var(--ink-2);background:#fff}
.speed-btn:hover{border-color:#d8c9b6}
.vol{display:flex;align-items:center;gap:6px}
.vol input{width:64px;accent-color:var(--accent)}

/* ===== 生词本 / 闪卡 ===== */
.wb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.wb-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);padding:13px 15px;
  box-shadow:var(--shadow-s);position:relative;transition:.18s;
}
.wb-card:hover{box-shadow:var(--shadow-m);border-color:#ddd4c6}
.wb-card .w{font-family:var(--serif);font-size:17px;font-weight:650;cursor:default;border:none}
.wb-card .w:hover{background:none;color:inherit}
.wb-card .p{font-size:11px;color:var(--ink-3);margin-left:6px}
.wb-card .m{font-size:12.5px;color:var(--ink-2);margin-top:5px;line-height:1.55}
.wb-card .src{font-size:10.5px;color:var(--ink-3);margin-top:8px;padding-top:8px;border-top:1px dashed var(--line-2)}
.wb-card .del{position:absolute;top:8px;right:8px;width:22px;height:22px;border-radius:6px;display:grid;place-items:center;color:#c8bfb2;opacity:0;transition:.15s}
.wb-card:hover .del{opacity:1}
.wb-card .del:hover{background:#fdeee8;color:var(--accent)}

.flash-stage{display:flex;flex-direction:column;align-items:center;gap:18px;padding:14px 0}
.flash{
  width:100%;max-width:520px;height:250px;perspective:1200px;cursor:pointer;
}
.flash-inner{position:relative;width:100%;height:100%;transition:transform .5s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}
.flash.flipped .flash-inner{transform:rotateY(180deg)}
.face{
  position:absolute;inset:0;backface-visibility:hidden;border-radius:18px;display:grid;place-items:center;
  padding:26px;text-align:center;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-m);
}
.face.back{transform:rotateY(180deg);background:linear-gradient(150deg,#fffdf9,#faf3ea)}
.face .big-w{font-family:var(--serif);font-size:34px;font-weight:600;letter-spacing:-.01em}
.face .big-p{font-size:13px;color:var(--ink-3);margin-top:8px;letter-spacing:.02em}
.face .big-m{font-size:16px;color:var(--ink-2);line-height:1.8}
.flash-tip{font-size:11.5px;color:var(--ink-3)}
.flash-actions{display:flex;gap:10px}

/* ===== 测验 ===== */
.quiz-card{max-width:640px;margin:0 auto}
.q-progress{display:flex;gap:4px;margin-bottom:18px}
.q-progress i{flex:1;height:4px;border-radius:3px;background:var(--line)}
.q-progress i.on{background:linear-gradient(90deg,#e8743f,#cf5133)}
.q-stem{font-family:var(--serif);font-size:20px;line-height:1.6;color:#1e1a16;margin-bottom:6px}
.q-stem .blank{display:inline-block;min-width:52px;border-bottom:2px solid var(--accent);margin:0 2px;text-align:center;color:var(--accent);font-weight:600}
.q-zh{font-size:12.5px;color:var(--ink-3);margin-bottom:20px}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{
  display:flex;align-items:center;gap:11px;padding:12px 15px;border-radius:11px;border:1px solid var(--line);
  background:var(--surface);text-align:left;transition:.16s;font-size:14px;
}
.opt:hover{border-color:#d8c9b6;background:var(--surface-2)}
.opt .k{
  width:22px;height:22px;border-radius:6px;background:var(--surface-2);border:1px solid var(--line-2);
  display:grid;place-items:center;font-size:11px;color:var(--ink-3);flex:0 0 22px;
}
.opt.right{border-color:#8fc3a0;background:#f2f9f4}
.opt.right .k{background:#d8efdf;border-color:#b6ddc2;color:#2f7a45}
.opt.wrong{border-color:#e8b0a0;background:#fdf3f0}
.opt.wrong .k{background:#fbdcd2;border-color:#f2c3b5;color:#b84226}
.opt .en{font-family:var(--serif);font-size:15.5px}
.q-result{text-align:center;padding:26px 10px}
.q-result .score{font-size:46px;font-weight:700;letter-spacing:-.03em;color:var(--accent);line-height:1}
.q-result .score small{font-size:16px;color:var(--ink-3);font-weight:500}

/* ===== 词库 ===== */
.abc{display:flex;gap:3px;flex-wrap:wrap;margin-bottom:16px}
.abc button{
  width:26px;height:26px;border-radius:7px;font-size:11.5px;color:var(--ink-3);border:1px solid transparent;
  transition:.14s;
}
.abc button:hover{background:var(--surface);border-color:var(--line);color:var(--ink)}
.abc button.on{background:var(--ink);color:#fff}
.vocab-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:0}
.vb-row{display:flex;align-items:baseline;gap:8px;padding:8px 10px;border-bottom:1px solid var(--line-2);transition:.14s;border-radius:8px}
.vb-row:hover{background:var(--surface)}
.vb-row .w{font-family:var(--serif);font-size:14.5px;font-weight:600;cursor:pointer;border:none}
.vb-row .w:hover{background:none;color:var(--accent)}
.vb-row .p{font-size:10.5px;color:var(--ink-3)}
.vb-row .m{font-size:11.5px;color:var(--ink-2);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vb-row .in{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 6px;opacity:0}
.vb-row.hit .in{opacity:1}

/* ===== 弹层 ===== */
.modal-mask{
  position:fixed;inset:0;background:rgba(28,25,22,.42);backdrop-filter:blur(3px);z-index:90;
  display:grid;place-items:center;padding:24px;animation:fade .2s;
}
.modal{
  background:var(--surface);border-radius:18px;box-shadow:var(--shadow-l);max-width:460px;width:100%;
  padding:24px 26px;position:relative;animation:pop .26s cubic-bezier(.3,1.3,.5,1);
}
@keyframes pop{from{opacity:0;transform:scale(.94) translateY(10px)}to{opacity:1;transform:none}}
.modal .close{position:absolute;top:14px;right:14px;width:28px;height:28px;border-radius:8px;display:grid;place-items:center;color:var(--ink-3)}
.modal .close:hover{background:var(--surface-2);color:var(--ink)}
.mw{font-family:var(--serif);font-size:30px;font-weight:600;letter-spacing:-.01em;line-height:1.2}
.mp{font-size:12.5px;color:var(--ink-3);margin-top:5px}
.mm{font-size:14.5px;color:var(--ink-2);margin-top:14px;line-height:1.75}
.msrc{font-size:11.5px;color:var(--ink-3);margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.modal-actions{display:flex;gap:9px;margin-top:18px}

/* toast */
.toast{
  position:fixed;left:50%;bottom:112px;transform:translate(-50%,16px);z-index:120;
  background:#241f1a;color:#fff;font-size:12.5px;padding:9px 18px;border-radius:24px;
  box-shadow:var(--shadow-m);opacity:0;transition:.26s;pointer-events:none;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:1180px){
  .learn-layout{grid-template-columns:1fr}
  .lyrics-card{position:static;height:56vh}
  .tab-body{max-height:none}
  .pl-song{display:none}
  .pl-right{width:auto;flex:0 0 auto;gap:4px}
  .player{left:0}
}
@media (max-width:820px){
  /* ===== 手机：侧栏变底部导航 ===== */
  .app{display:block}
  .sidebar{
    position:fixed;top:auto;left:0;right:0;bottom:0;z-index:50;
    width:100%;flex:none;height:auto;
    flex-direction:row;align-items:stretch;
    background:rgba(255,255,255,.96);backdrop-filter:blur(14px);
    border-right:none;border-top:1px solid var(--line);
    padding:2px 4px calc(2px + env(safe-area-inset-bottom,0px));
    box-shadow:0 -4px 20px rgba(34,30,26,.08);
  }
  .brand,.nav-label,.side-foot{display:none}
  .nav{flex-direction:row;flex:1;justify-content:space-around;gap:0;margin:0}
  .nav-item{flex-direction:column;gap:1px;font-size:9.5px;padding:5px 4px;justify-content:center;border-radius:8px;min-width:0}
  .nav-item .ico{width:20px;height:20px}
  .main{padding:16px 14px calc(58px + env(safe-area-inset-bottom,0px))}
  body.has-player{padding-bottom:calc(58px + 76px + env(safe-area-inset-bottom,0px))}
  .player{left:0;bottom:calc(52px + env(safe-area-inset-bottom,0px))}
  .toast{bottom:calc(140px + env(safe-area-inset-bottom,0px))}

  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .hero{padding:22px}
  .hero-txt h2{font-size:21px}
  .learn-layout{grid-template-columns:1fr}
  .learn-layout>*{min-width:0}
  .learn-head{flex-wrap:wrap;gap:10px;align-items:flex-start}
  .learn-head #markDone{flex:0 0 100%;width:100%;padding:7px 8px;font-size:12px;white-space:nowrap;margin-top:0;justify-content:center}
  .learn-head h1{font-size:17px}
  .learn-head .sub{white-space:normal;font-size:11.5px}
  .learn-head .cover{width:42px;height:42px;flex:0 0 42px;font-size:18px}
  .lyrics-tools{flex-wrap:nowrap;overflow-x:auto;gap:4px}
  .lyrics-tools .tool-btn{white-space:nowrap;flex:0 0 auto}
  .lyrics-tools>span{display:none}
  .song-intro{-webkit-line-clamp:3;font-size:12px}
  .lyric-line .en{font-size:15.5px}
  .song-grid{grid-template-columns:1fr}
  .wb-grid{grid-template-columns:1fr}
  .vocab-list{grid-template-columns:1fr}
  .page-head h1{font-size:20px}
  .tab-body{padding:14px 14px}
  .pl-progress{max-width:none}
  .lyrics-card{height:calc(100vh - 390px);min-height:320px}
}
@media (max-width:680px){
  .player{height:76px;padding:0 10px;gap:6px}
  .pl-progress{gap:6px}
  .pl-progress .time{width:30px;flex:0 0 30px;font-size:10px}
  .pl-right{gap:3px;flex:0 0 auto;width:auto}
  .speed-btn{font-size:10px;padding:2px 6px;border-radius:5px}
  .vol{gap:3px;font-size:10.5px}
  .vol input{width:44px}
  .pbtn{width:30px;height:30px}
  .pbtn.play{width:36px;height:36px}
  .pl-btns{gap:4px}
  .hero{flex-direction:column-reverse;gap:14px}
  .ring-wrap{align-self:flex-start}
}