/* ===== 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}
.boot-wait{
  margin:18vh auto 0; max-width:280px; text-align:center;
  font-size:13px; color:var(--ink-3); letter-spacing:.02em;
}
.boot-wait::before{
  content:""; display:block; width:28px; height:28px; margin:0 auto 14px;
  border:2px solid var(--line); border-top-color:var(--accent); border-radius:50%;
  animation:bootSpin .7s linear infinite;
}
@keyframes bootSpin{to{transform:rotate(360deg)}}
body.is-booting .sidebar,
body.is-booting .stage-bar{pointer-events:none; opacity:.55}
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}

/* ===== 学段切换（小学 / 初中 / 高中）===== */
.stage-bar{display:none}
.stage-switch{display:flex;flex-direction:column;gap:4px;padding:0 2px 14px;margin-bottom:2px;border-bottom:1px solid var(--line-2)}
.stage-btn{
  display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:9px;
  color:var(--ink-2);font-size:13px;transition:.16s;border:1px solid transparent;text-align:left;width:100%;
}
.stage-btn:hover{background:var(--surface-2);color:var(--ink)}
.stage-btn.on{background:var(--accent-soft);color:var(--accent);border-color:rgba(207,81,51,.16);font-weight:600}
.stage-btn .si{font-size:15px;line-height:1;flex:0 0 auto;filter:saturate(.9)}
.stage-btn.on .si{filter:none}
.stage-btn .sn{flex:1;min-width:0}
.stage-btn .sc{font-size:10.5px;color:var(--ink-3);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.stage-btn.on .sc{color:var(--accent);opacity:.75}

.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)}
.kicker-link{
  display:none;margin-left:8px;padding:0;border:0;background:none;
  font:inherit;font-size:11px;font-weight:650;letter-spacing:.04em;
  color:rgba(255,255,255,.72);text-decoration:underline;text-underline-offset:3px;cursor:pointer
}
.kicker-link:hover{color:#fff}
.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;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.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:32px;height:32px;border-radius:50%;color:var(--accent);
  background:var(--accent-soft);
  vertical-align:middle;transition:.15s;flex:0 0 auto;
}
.speak-btn:hover{color:var(--accent);background:var(--accent-soft);filter:brightness(.96)}
.speak-btn:active{transform:scale(.9)}
.speak-btn svg{width:19px;height:19px;flex:0 0 auto}
.ph-sep{color:var(--ink-3);opacity:.6}
.ph-note{
  display:inline-block;font-size:10px;color:var(--ink-3);margin-left:7px;
  padding:0 5px;border:1px solid var(--line);border-radius:5px;line-height:1.6;vertical-align:1px;
}
/* 音标里的方括号用弱化色，避免喧宾夺主 */
.ph-b{color:var(--ink-3);opacity:.7}
/* 英/美口音对照：可点发音 */
.ph-alt{
  display:inline-flex;align-items:center;gap:3px;cursor:pointer;
  padding:1px 5px;border-radius:6px;transition:background .15s;
}
.ph-alt + .ph-alt{margin-left:6px}
.ph-alt:hover{background:var(--accent-soft)}
.ph-alt:active{transform:scale(.98)}
.ph-tag{
  font-size:9.5px;line-height:1.5;padding:0 4px;border-radius:4px;
  background:var(--teal-soft);color:var(--teal);font-weight:600;flex:none;
}
.ph-tag-us{background:var(--accent-soft);color:var(--accent)}
.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;
  position:relative;animation:pop .3s cubic-bezier(.3,1.3,.5,1);
}
.login-pw{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);text-align:left;
}
.login-pw-title{font-size:13px;color:var(--ink-2);text-align:center;margin:0 0 12px;font-weight:600}
.login-pw-lab{display:block;font-size:12px;color:var(--ink-3);margin:0 0 5px;font-weight:500}
.login-pw input{
  width:100%;box-sizing:border-box;font:inherit;font-size:14px;padding:9px 11px;margin:0 0 10px;
  border:1px solid var(--line);border-radius:9px;background:var(--surface-2);color:var(--ink);
}
.login-pw input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.login-pw-btn{
  width:100%;font:inherit;font-size:14px;font-weight:600;padding:10px 14px;border:0;border-radius:9px;
  background:var(--accent);color:#fff;cursor:pointer;margin-top:2px;
}
.login-pw-btn:hover{filter:brightness(.96)}
.login-pw-btn:disabled{opacity:.6;cursor:progress}
.login-pw-msg{font-size:12px;color:var(--ink-3);margin-top:8px;min-height:18px;line-height:1.5}
.login-pw-msg.err{color:var(--accent)}
.login-pw-msg.ok{color:var(--teal)}
.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-alt{
  display:block;margin:12px auto 0;padding:0;border:0;background:none;
  font:inherit;font-size:12px;color:var(--ink-3);text-decoration:underline;
  text-underline-offset:3px;cursor:pointer;
}
.login-alt:hover{color:var(--ink-2)}
.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}
.vb-toolbar{width:100%}
.vb-toolbar .vb-search{flex:1 1 180px;min-width:0;max-width:none}
.vb-dual-filter{
  display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;
  font-size:12px;color:var(--ink-2);user-select:none;cursor:pointer;
  padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);
  white-space:nowrap
}
.vb-dual-filter input{margin:0;accent-color:var(--accent)}
.vb-dual-filter:has(input:checked){border-color:#e8c4b8;background:var(--accent-soft);color:var(--accent);font-weight:650}
.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.has-clear input{padding-right:36px}
.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)}
.search-clear{
  position:absolute;right:7px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:7px;border:none;padding:0;
  display:grid;place-items:center;color:var(--ink-3);background:transparent;cursor:pointer;
  transition:background .14s,color .14s;
}
.search-clear:hover{background:var(--surface-2);color:var(--ink)}
.search-clear[hidden]{display:none !important}
.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:auto 1fr auto;gap:8px;align-items:start;
  padding:8px 12px 8px 8px;border-radius:10px;
  cursor:pointer;transition:background .18s;position:relative;overflow:visible;
}
.lyric-line:hover{background:var(--surface-2)}
.lyric-line .line-body{min-width:0}
.lyric-line.is-patched .en{box-shadow:inset 0 -1px 0 rgba(207,81,51,.35)}
.lyric-edit{
  flex:0 0 auto;align-self:center;opacity:0;pointer-events:none;
  border:1px solid var(--line-2);background:#fff;color:var(--ink-3);
  font:inherit;font-size:11px;font-weight:650;padding:2px 7px;border-radius:6px;
  cursor:pointer;line-height:1.4;transition:opacity .15s,color .15s,border-color .15s
}
.lyric-line:hover .lyric-edit,.lyric-line.active .lyric-edit{opacity:1;pointer-events:auto}
.lyric-edit:hover{color:var(--accent);border-color:#f2d6ca;background:var(--accent-soft)}
.lyric-edit-modal{
  width:min(480px, calc(100vw - 24px));max-width:100%;
  padding:18px 16px 16px;box-sizing:border-box
}
.lyric-edit-field{
  display:flex;flex-direction:column;gap:4px;margin-top:10px;
  font-size:12px;color:var(--ink-3)
}
.lyric-edit-field textarea{
  font:inherit;font-size:14px;color:var(--ink);padding:8px 10px;
  border:1px solid var(--line);border-radius:8px;background:#fff;
  resize:vertical;line-height:1.5;min-height:56px
}
.lyric-edit-field:first-of-type textarea{font-family:var(--serif);font-size:15px}
.line-gutter{
  display:flex;align-items:flex-start;gap:2px;flex:0 0 auto;padding-top:1px;
}
.lyric-line .idx{
  font-size:10.5px;color:#c8bfb2;text-align:right;padding-top:3px;min-width:1.4em;
  font-variant-numeric:tabular-nums;user-select:none;line-height:1.2;
}
.lyric-line .idx-n{display:inline}
.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);
}
/* 有语法解析：标在中文前，避免和卡拉OK倒数 ●●● 搞混 */
.lyric-line.has-note .zh::before{
  content:"析";display:inline-block;margin-right:5px;padding:0 4px;
  font-size:10px;line-height:1.5;border-radius:4px;font-weight:650;
  color:var(--accent);background:var(--accent-soft);vertical-align:1px;
}
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}

/* ---------- 卡拉OK：行号左侧竖向 ●●● ---------- */
/* 占位用 visibility，勿 display:none（否则会挤垮歌词换行） */
.kara-beat{
  display:flex;flex-direction:column;align-items:center;justify-content:flex-start;
  gap:2px;padding-top:5px;width:5px;flex:0 0 5px;min-height:0;
  visibility:hidden;opacity:0;pointer-events:none;
}
.kara-beat.on{visibility:visible;opacity:1}
/* 英文折成 2 行及以上：三点纵向拉开，总跨度不超过约两行行高 */
.lyric-line.tall .kara-beat.on{
  height:var(--beat-span, 3em);
  justify-content:space-between;
  gap:0;
  padding-top:4px;padding-bottom:2px;
}
.kara-beat i{
  width:4px;height:4px;border-radius:50%;flex:0 0 auto;
  background:#e8d5c8;opacity:.35;
  transition:background .14s ease, opacity .14s ease, box-shadow .14s ease;
}
.kara-beat[data-n="1"] i:nth-child(1),
.kara-beat[data-n="2"] i:nth-child(-n+2),
.kara-beat[data-n="3"] i{
  background:#e8743f;opacity:1;
  box-shadow:0 0 0 1px rgba(232,116,63,.22);
}
body.no-karaoke .kara-beat{visibility:hidden !important;opacity:0 !important}

/* ---------- 卡拉OK：逐字"跑字"变色 ---------- */
/* 有逐字时间戳的词会加 .kw；播放时：
     .sung = 已经唱过的词（暖橙实心）
     .cur  = 正在唱的词（深色加粗 + 词内渐变填充 + 底部光晕）
   没数据的老歌完全不受影响（没有 .kw 类）。 */
.lyric-line .en .kw{
  position:relative;
  border-radius:3px;
  transition:color .16s ease, opacity .16s ease, transform .16s ease;
  opacity:.34;
}
.lyric-line.active .en .kw{opacity:.62}
/* 已唱过 → 暖橙实心 */
.lyric-line .en .kw.sung{
  opacity:1;
  color:#d2542a;
  text-shadow:0 0 10px rgba(210,84,42,.18);
}
/* 正在唱 → 词内渐变填充：从暖橙到深棕，字随进度"点亮" */
.lyric-line .en .kw.cur{
  opacity:1;
  font-weight:700;
  transform:translateY(-0.5px);
  background-image:linear-gradient(90deg,#e8743f 0%,#cf5133 var(--p,0%),#3b352f var(--p,0%));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}
/* 当前词底部一道暖光，强化"正在唱"的感觉 */
.lyric-line .en .kw.cur::after{
  content:"";position:absolute;left:-1px;right:-1px;bottom:-3px;height:2.5px;
  background:linear-gradient(90deg,transparent,rgba(232,116,63,.85),transparent);
  border-radius:2px;
  pointer-events:none;
}
/* 非活动行不要高亮效果，避免整屏都亮 */
.lyric-line:not(.active) .en .kw.sung,
.lyric-line:not(.active) .en .kw.cur{opacity:.34}

/* 用户关掉逐字高亮 → 全部退回普通歌词 */
body.no-karaoke .lyric-line .en .kw{
  opacity:1;color:inherit;font-weight:inherit;transform:none;text-shadow:none;
  background-image:none;-webkit-background-clip:border-box;background-clip:border-box;
  -webkit-text-fill-color:currentColor;
}
body.no-karaoke .lyric-line .en .kw.sung{color:inherit}
body.no-karaoke .lyric-line .en .kw.cur{color:inherit;font-weight:inherit;transform:none;text-shadow:none}
body.no-karaoke .lyric-line .en .kw.cur::after{display:none}
body.no-karaoke .lyric-line.active .en .kw{opacity:1}

/* 「逐字高亮」按钮在开启时给个暖色提示，让人知道这歌支持 */
#tKaraoke.on{background:linear-gradient(135deg,#fde8dc,#fbd9c4);color:#a8481f;border-color:#f0bfa0}
.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;min-width:0;
}
.vrow:hover{background:var(--surface-2)}
.vrow .wline{display:flex;align-items:baseline;gap:5px;min-width:0;flex-wrap:wrap}
.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);min-width:0}
.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)}
/* 上一曲/下一曲用 ⏮ ⏭ 字形（U+23EE / U+23ED）。
   这两个码位在部分平台会被当成 emoji 渲染成彩色图标，和旁边黑白的
   播放/循环按钮不搭，所以显式指定文本型符号字体 + font-variant-emoji:text，
   并把行高归零保证垂直居中对齐。 */
.pico{
  font-family:"Segoe UI Symbol","Apple Symbols","Noto Sans Symbols 2",sans-serif;
  font-size:19px;line-height:1;display:block;
  font-variant-emoji:text;-webkit-font-smoothing:antialiased;
  transform:translateY(-.5px);   /* 符号字形的基线比 SVG 略低，微调一像素对齐 */
}
.pico-sm{font-size:17px}
.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:8px;width:236px;flex:0 0 236px;justify-content:flex-end}
.pl-right-row{display:flex;align-items:center;gap:6px}
.pl-right-row .pbtn{width:36px;height:36px}
.pl-right-row .speed-btn{min-width:48px;padding:6px 12px;font-size:12.5px;font-weight:600}
/* 播放条里的「回到播放位置」按钮（独立于 .pl-song，窄屏隐藏歌名后仍可用） */
.pl-locate{
  width:28px;height:28px;border-radius:50%;flex:0 0 28px;color:var(--ink-3);
  display:grid;place-items:center;transition:.15s;background:var(--surface-2);margin-left:-10px;
}
.pl-locate:hover{color:var(--accent);background:var(--accent-soft)}
.pl-locate:active{transform:scale(.92)}

/* 「回到播放位置」浮动按钮 */
.back-fab{
  position:fixed;z-index:45;display:inline-flex;align-items:center;gap:7px;
  right:26px;bottom:104px;padding:9px 15px;border-radius:24px;
  background:var(--ink);color:#fff;font-size:12.5px;font-weight:600;
  box-shadow:0 8px 24px rgba(34,30,26,.24);transition:.18s;
}
.back-fab:hover{background:#332d27;transform:translateY(-1px)}
.back-fab:active{transform:scale(.97)}
.back-fab[hidden]{display:none}
.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)}
/* 生词本卡片里的记忆法摘要，点开看完整记忆法 */
.wb-card .w[data-copy]{cursor:pointer}
.wb-card .w[data-copy]:hover{color:var(--accent)}
.wb-mn.is-empty{opacity:.85}
.wb-mn{  margin-top:7px;font-size:11.5px;line-height:1.55;color:var(--ink-3);
  background:var(--accent-soft);border:1px solid #f4e2d8;border-radius:7px;
  padding:5px 8px;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  display:flex;align-items:center;gap:6px;transition:.15s;
}
.wb-mn:hover{background:#fbe6db;color:var(--ink-2)}
.wb-mn b{
  flex:0 0 auto;font-size:9.5px;font-weight:700;color:var(--accent);
  background:#fff;border-radius:4px;padding:1px 4px;
}

.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}
/* 词库列表：
   关键：1fr 实际是 minmax(auto,1fr)，auto 的最小值 = 内容的 min-content 宽度。
   释义 .m 是 white-space:nowrap，min-content 等于整句长度，会把轨道撑破
   （实测 600px 视口下 600 行全部溢出，最宽超 217px）。
   所以列宽必须用 minmax(0,1fr)，并给 .m 加 min-width:0，让省略号真正生效。 */
/* 与词根同款卡片网格（圈起来）
   上行：词 + 喇叭 …… 小/初/高/其他 + 记
   中行：音标 …… 歌词出现圆点
   下行：释义 + 频次/入册徽章 */
.vocab-list{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
}
.vb-row{
  display:flex;flex-direction:column;align-items:stretch;gap:2px;
  padding:10px 12px;min-width:0;cursor:pointer;
  border:1px solid var(--line-2);background:var(--surface);
  border-radius:10px;transition:.14s;
}
.vb-row:hover{border-color:var(--accent);background:var(--accent-soft)}
.vb-line1{display:flex;align-items:center;gap:6px;min-width:0;width:100%;flex-wrap:nowrap}
.vb-line2{display:flex;align-items:center;gap:6px;min-width:0;width:100%}
.vb-line3{display:flex;align-items:center;gap:6px;min-width:0;width:100%;flex-wrap:wrap}
.vb-row .vb-left{
  display:inline-flex;align-items:center;gap:4px;min-width:0;flex:0 1 auto;flex-wrap:nowrap;
}
.vb-row .vb-trail{
  margin-left:auto;display:inline-flex;align-items:center;gap:4px;flex:0 0 auto;
}
/* 词单词最长可到 "businesswoman (businesswomen)"，必须允许收缩并省略，
   否则 flex:0 0 auto 会把它整条推出容器 */
.vb-row .w{font-family:var(--serif);font-size:14.5px;font-weight:600;cursor:pointer;border:none;flex:0 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vb-row .w:hover{background:none;color:var(--accent)}
.vb-row .p{font-size:11px;color:var(--ink-3);font-family:var(--serif);flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vb-row .m{font-size:11.5px;color:var(--ink-2);flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* 圆点：歌词中出现过（中行末尾） */
.vb-row .in{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 6px;margin-left:auto;opacity:0}
.vb-row.hit .in{opacity:1}
.vb-row.hit.from-primary .in{background:#16a34a}
.vb-row.hit.from-junior .in{background:#7c3aed}
.vb-row.hit.from-senior .in{background:#dc2626}
.vb-row.hit.from-other .in{background:#d97706}
@media (max-width:820px){
  .vocab-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
}
@media (max-width:480px){
  .vocab-list{grid-template-columns:minmax(0,1fr);gap:6px}
}
/* 学段角标：小 / 初 / 高 / 其他 */
.stage-tag{
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;font-size:10px;font-weight:700;line-height:1;
  padding:2px 5px;border-radius:5px;letter-spacing:.02em;
  background:#e8f8ee;color:#15803d;border:1px solid #bbf7d0;
}
.stage-tag.from-primary{background:#e8f8ee;color:#15803d;border-color:#bbf7d0}
.stage-tag.from-junior{background:#f1e9ff;color:#6d28d9;border-color:#c4b5fd}
.stage-tag.from-senior{background:#fee2e2;color:#b91c1c;border-color:#fca5a5}
.stage-tag.from-other{background:#fff7ed;color:#c2410c;border-color:#fdba74}
.freq-chip.root-src-primary.on{background:#e8f8ee;border-color:#86efac;color:#15803d}
.freq-chip.root-src-junior.on{background:#f1e9ff;border-color:#c4b5fd;color:#6d28d9}
.freq-chip.root-src-senior.on{background:#fee2e2;border-color:#fca5a5;color:#b91c1c}
.freq-chip.root-src-other.on{background:#fff7ed;border-color:#fdba74;color:#c2410c}
.mstage{
  display:inline-block;margin:6px 0 2px;padding:2px 8px;border-radius:999px;
  font-size:11px;font-weight:650;letter-spacing:.02em;
  background:#e8f8ee;color:#15803d;
}
.mstage.from-primary{background:#e8f8ee;color:#15803d}
.mstage.from-junior{background:#f1e9ff;color:#6d28d9}
.mstage.from-senior{background:#fee2e2;color:#b91c1c}
.mstage.from-other{background:#fff7ed;color:#c2410c}
/* 列表内的发音按钮：比弹窗里的小一号，避免撑行 */
.vb-row .speak-btn,.vrow .speak-btn{width:26px;height:26px;margin:0;flex:0 0 auto}
.vb-row .speak-btn svg,.vrow .speak-btn svg{width:16px;height:16px}
/* 词库行：含教材记忆法的标记 */
.mn-badge{
  display:inline-block;font-size:10px;font-weight:700;color:var(--accent);
  background:var(--accent-soft);border:1px solid #f2ded4;border-radius:5px;
  padding:0 5px;line-height:17px;vertical-align:1px;flex:0 0 auto;margin-left:0
}
.mn-num{color:var(--accent);font-weight:700}

/* ===== 管理员词库 ===== */
.admin-vocab-layout{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:14px;align-items:start;
}
@media (max-width:900px){
  .admin-vocab-layout{grid-template-columns:1fr}
  /* 窄屏点词后只显示编辑区，避免还要滑到列表底下 */
  .admin-vocab-layout.av-editing .av-list-pane{display:none}
  .admin-vocab-layout.av-editing .av-editor-pane{order:-1}
  .av-back-list{display:inline-flex !important}
}
.av-back-list{display:none}
.vb-row.av-on{background:var(--accent-soft)}
.vb-row.av-del .w,.vb-row.av-del .m{opacity:.45;text-decoration:line-through}

/* 词库：单词 / 词根 tab */
.vb-tabs{display:flex;gap:4px;flex-wrap:wrap;margin:0 0 14px;padding:3px;background:var(--surface-2);border:1px solid var(--line-2);border-radius:10px;width:fit-content;max-width:100%}
.vb-tab{
  border:0;background:transparent;color:var(--ink-3);font-size:13px;font-weight:600;
  padding:7px 14px;border-radius:8px;cursor:pointer;transition:.14s;
}
.vb-tab:hover{color:var(--ink)}
.vb-tab.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-s)}
.vb-tab .cnt{font-size:10px;font-weight:500;opacity:.65;margin-left:4px}

/* 词根 / 分类：宽屏一行 3 个卡片，窄屏自适应 */
.root-list,.cat-list{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
}
.cat-card,.root-list > .root-card{
  border:1px solid var(--line-2);
  background:var(--surface);
  min-width:0;
}
.cat-card.open,.root-list > .root-card.open{grid-column:1 / -1}
.cat-hd{
  padding:10px 12px;gap:2px;
  align-items:stretch;flex-direction:column;flex-wrap:nowrap;
}
.cat-hd .root-line1,.cat-hd .root-line2,.cat-hd .root-line3{width:100%}
.cat-hd .root-line1{flex-wrap:nowrap}
.cat-hd .root-left{
  display:inline-flex;align-items:center;gap:4px;min-width:0;flex:0 1 auto;flex-wrap:nowrap;
}
.cat-hd .root-trail{
  margin-left:auto;display:inline-flex;align-items:center;gap:4px;flex:0 0 auto;
}
.cat-hd .root-form{
  min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  font-size:14.5px;flex:0 1 auto;
}
.cat-hd .root-speak{
  width:28px;height:28px;flex:0 0 auto;margin:0;padding:0;
  border:0;background:transparent;color:var(--accent);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
}
.cat-hd .root-speak svg{width:16px;height:16px}
.cat-hd .root-ph{
  font-family:var(--serif);font-size:12px;color:var(--ink-3);font-weight:500;letter-spacing:.01em;
  flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.cat-hd .root-zh{flex:0 1 auto;min-width:0}
.cat-hd .root-en,.cat-hd .root-also{flex:0 1 auto;min-width:0}
.cat-hd .root-cnt{margin-left:auto;flex:0 0 auto}
@media (max-width:820px){
  .root-list,.cat-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
}
@media (max-width:480px){
  .root-list,.cat-list{grid-template-columns:minmax(0,1fr);gap:6px}
}
.root-card{border-radius:10px;border:1px solid transparent;transition:.14s}
.root-card.open{border-color:var(--line);background:var(--surface-2)}
.root-hd{
  width:100%;display:flex;flex-direction:column;align-items:stretch;gap:2px;
  text-align:left;padding:10px 12px;border:0;background:transparent;cursor:pointer;border-radius:10px;
  font:inherit;color:inherit;-webkit-tap-highlight-color:transparent;
}
.root-hd:hover{background:var(--surface)}
.root-card.open .root-hd{background:transparent}
.root-form{font-family:var(--serif);font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.root-zh{font-size:13px;color:var(--ink-2);font-weight:550}
.root-en{font-size:11.5px;color:var(--ink-3);font-style:italic}
.root-also{font-size:11px;color:var(--ink-3)}
.root-cnt{
  margin-left:auto;font-size:11px;font-weight:600;color:var(--ink-3);
  background:var(--surface);border:1px solid var(--line-2);border-radius:999px;padding:1px 8px;
}
.root-bd{padding:0 12px 12px;display:flex;flex-direction:column;gap:10px}
/* 词根记忆法：通栏，版式与单词记忆法一致（拆分/谐音/联想 + 生图） */
.root-tip-pane{
  border:1px solid #efe2c6;background:linear-gradient(180deg,#fbf6ec,#f7f1e6);
  border-radius:12px;padding:4px 6px 8px;min-width:0
}
.root-tip-pane .root-mn{
  margin:0;border:0;background:transparent;box-shadow:none;padding:6px 6px 2px
}
.root-tip-pane .mn-t{margin-bottom:4px}
.root-tip{
  font-size:12.5px;line-height:1.65;color:#5a5348;background:#f7f1e6;
  border-radius:8px;padding:8px 10px;
}
/* 分类/词根展开后的单词：每行 3 个 */
.root-w-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
}
@media (max-width:820px){
  .root-w-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
}
@media (max-width:420px){
  .root-w-grid{grid-template-columns:minmax(0,1fr);gap:6px}
}
.root-w{padding:10px;border-radius:8px;background:var(--surface);border:1px solid var(--line-2);cursor:pointer;transition:.14s;min-width:0}
.root-w.in-bank:hover{border-color:var(--accent);background:var(--accent-soft)}
.root-w.out-bank{opacity:.85}
.root-w-main{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-bottom:0}
.root-w-en{font-family:var(--serif);font-size:14.5px;font-weight:650;color:var(--ink)}
.root-w-p{font-size:11.5px;color:var(--ink-3);font-family:var(--serif);line-height:1.35;margin:0}
.root-w-p .ph-alt{margin-right:6px}
.root-w-m{font-size:12px;color:var(--ink-2);line-height:1.45;min-width:0;word-break:break-word;margin:0}
.root-w-note{margin-top:6px;font-size:11.5px;line-height:1.65;color:var(--ink-3)}
.root-w-empty{font-size:12.5px;color:var(--ink-3);padding:6px 4px;grid-column:1/-1}
.root-w-auto{
  font-size:10px;font-weight:700;color:#0f766e;background:#e6f7f4;
  border-radius:4px;padding:1px 5px;line-height:1.3
}
.root-w-admin{
  margin-left:auto;border:1px solid rgba(207,81,51,.35);background:var(--accent-soft);
  color:var(--accent);font-size:11px;font-weight:700;border-radius:6px;padding:2px 7px;cursor:pointer
}
.root-w-admin:hover{background:var(--accent);color:#fff}
.av-tag{
  flex:0 0 auto;font-size:10px;font-weight:700;line-height:1.3;
  padding:1px 6px;border-radius:5px;margin-left:2px;
}
.av-tag.add{color:#15803d;background:#e8f8ee}
.av-tag.edit{color:#c2410c;background:#fff1e6}
.av-tag.del{color:#6d28d9;background:#f1e9ff}
.av-form{display:flex;flex-direction:column;gap:10px}
.av-form-h{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:4px}
.av-form-h b{font-size:15px}
.av-form-h #avSaveTop{margin-left:auto}
.av-fold{margin-bottom:12px}
.av-fold > summary{list-style:none;cursor:pointer}
.av-fold > summary::-webkit-details-marker{display:none}
.av-fold-sum{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font:inherit;color:var(--ink);user-select:none
}
.av-fold-sum b{font-size:15px}
.av-fold-tip{font-size:11px;color:var(--ink-3);margin-left:auto}
.av-fold[open] .av-fold-tip{display:none}
.av-fold-body{margin-top:10px}
.av-field{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--ink-3)}
.av-field span{font-weight:650}
.av-ph-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:520px){.av-ph-row{grid-template-columns:1fr}}
.av-field input,.av-field textarea{
  border:1px solid var(--line);border-radius:8px;padding:8px 10px;
  font:inherit;font-size:13px;color:var(--ink);background:var(--surface);outline:none;
}
.av-field input:focus,.av-field textarea:focus{border-color:#d8b09a;box-shadow:0 0 0 3px rgba(207,81,51,.08)}
.av-field input[readonly]{background:var(--surface-2);color:var(--ink-2)}
.root-w-bank{font-size:11px;color:var(--ink-3);margin:2px 0 0 2px;line-height:1.4}
.av-cat-search{
  position:relative;display:flex;align-items:center;margin:0 0 8px
}
.av-cat-search input{
  width:100%;box-sizing:border-box;border:1px solid var(--line);border-radius:8px;
  padding:8px 34px 8px 10px;font:inherit;font-size:13px;color:var(--ink);background:var(--surface);outline:none;
  /* 去掉浏览器自带清除，只保留我们的 ✕，避免出现两个 */
  -webkit-appearance:none;appearance:none
}
.av-cat-search input::-webkit-search-cancel-button{display:none;-webkit-appearance:none}
.av-cat-search input:focus{border-color:#d8b09a;box-shadow:0 0 0 3px rgba(207,81,51,.08)}
.av-cat-clear{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  border:0;background:transparent;color:var(--ink-3);width:26px;height:26px;
  border-radius:6px;cursor:pointer;font-size:14px;line-height:1;padding:0
}
.av-cat-clear:hover{background:var(--surface-2);color:var(--ink)}
.av-cat-clear[hidden]{display:none !important}
.av-cats{
  display:flex;flex-direction:column;gap:6px;max-height:220px;overflow:auto;
  padding:8px;border:1px solid var(--line);border-radius:10px;background:var(--surface-2);margin-bottom:8px
}
.av-cat-item[hidden]{display:none !important}
.av-cat-item{display:grid;grid-template-columns:auto 1fr 1.2fr;gap:8px;align-items:center;font-size:12px}
.av-cat-name{color:var(--ink);font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.av-cat-m{
  width:100%;box-sizing:border-box;padding:5px 8px;border:1px solid var(--line);border-radius:7px;
  background:var(--surface);font-size:12px;color:var(--ink)
}
.av-cat-m:disabled{opacity:.45;background:transparent}
.av-mn-title{font-size:12px;font-weight:700;color:var(--accent);margin-top:4px}
.av-form-acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.av-danger{color:#b91c1c !important;border-color:#fecaca !important}
.av-hint{font-size:11.5px;color:var(--ink-3);line-height:1.5;margin-top:4px}

/* ===== 中考688词频分级 ===== */
/* 筛选条：8 个等级 chip + 全部 */
.freq-bar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}
.freq-chip{
  display:inline-flex;align-items:center;gap:5px;
  font-size:11.5px;font-weight:600;color:var(--ink-2);
  background:var(--card);border:1px solid var(--line);border-radius:999px;
  padding:4px 11px;cursor:pointer;transition:.14s;white-space:nowrap;
}
.freq-chip:hover{border-color:var(--accent);color:var(--accent)}
.freq-chip.on{background:var(--ink);border-color:var(--ink);color:#fff}
.freq-chip i{font-style:normal;font-size:10px;opacity:.62;font-weight:500}
/* 行内词频标记：Lv1-3 高频用暖红，越低越灰 */
.freq-badge{
  display:inline-block;font-size:9.5px;font-weight:700;line-height:16px;
  padding:0 5px;border-radius:5px;flex:0 0 auto;
  border:1px solid transparent;letter-spacing:.2px;
}
.freq-badge.lv1{color:#c2410c;background:#fff1e6;border-color:#fed7aa}
.freq-badge.lv2{color:#b45309;background:#fef6e7;border-color:#fde3ab}
.freq-badge.lv3{color:#a16207;background:#fdfbe6;border-color:#f0e68a}
.freq-badge.lv4{color:#4d7c0f;background:#f4fbe6;border-color:#d9f0a8}
.freq-badge.lv5{color:#0d9488;background:#e6f7f5;border-color:#a7e5df}
.freq-badge.lv6{color:#0284c7;background:#e5f3fc;border-color:#a8dcf5}
.freq-badge.lv7{color:#6366f1;background:#eceefe;border-color:#c3c6fb}
.freq-badge.lv8{color:#78716c;background:#f4f3f2;border-color:#ddd8d5}
/* chip 上的等级色点 */
.freq-chip.lv1{border-color:#fed7aa}.freq-chip.lv2{border-color:#fde3ab}
.freq-chip.lv3{border-color:#f0e68a}.freq-chip.lv4{border-color:#d9f0a8}
.freq-chip.lv5{border-color:#a7e5df}.freq-chip.lv6{border-color:#a8dcf5}
.freq-chip.lv7{border-color:#c3c6fb}.freq-chip.lv8{border-color:#ddd8d5}
.freq-chip.on{border-color:var(--ink)}
/* 高中入册：小学 / 初中 / 高一上…高三下 / 其他 */
.freq-chip.sem-primary,.freq-badge.sem-primary{border-color:#bbf7d0}
.freq-chip.sem-junior,.freq-badge.sem-junior{border-color:#bfdbfe}
.freq-chip.sem-1a,.freq-badge.sem-1a{border-color:#fed7aa}
.freq-chip.sem-1b,.freq-badge.sem-1b{border-color:#fde3ab}
.freq-chip.sem-2a,.freq-badge.sem-2a{border-color:#f0e68a}
.freq-chip.sem-2b,.freq-badge.sem-2b{border-color:#d9f0a8}
.freq-chip.sem-3a,.freq-badge.sem-3a{border-color:#a7e5df}
.freq-chip.sem-3b,.freq-badge.sem-3b{border-color:#a8dcf5}
.freq-chip.sem-other,.freq-badge.sem-other{border-color:#ddd8d5}
/* 小学：一年级/二年级 + 三上～六下 / 其他 */
.freq-chip.sem-g1,.freq-badge.sem-g1{border-color:#86efac}
.freq-chip.sem-g2,.freq-badge.sem-g2{border-color:#bbf7d0}
.freq-chip.sem-g3a,.freq-badge.sem-g3a{border-color:#a7f3d0}
.freq-chip.sem-g3b,.freq-badge.sem-g3b{border-color:#6ee7b7}
.freq-chip.sem-g4a,.freq-badge.sem-g4a{border-color:#fde68a}
.freq-chip.sem-g4b,.freq-badge.sem-g4b{border-color:#fcd34d}
.freq-chip.sem-g5a,.freq-badge.sem-g5a{border-color:#fdba74}
.freq-chip.sem-g5b,.freq-badge.sem-g5b{border-color:#fb923c}
.freq-chip.sem-g6a,.freq-badge.sem-g6a{border-color:#c4b5fd}
.freq-chip.sem-g6b,.freq-badge.sem-g6b{border-color:#fca5a5}
.freq-badge.sem-primary{color:#15803d;background:#f0fdf4}
.freq-badge.sem-junior{color:#1d4ed8;background:#eff6ff}
.freq-badge.sem-1a{color:#c2410c;background:#fff1e6}
.freq-badge.sem-1b{color:#b45309;background:#fef6e7}
.freq-badge.sem-2a{color:#a16207;background:#fdfbe6}
.freq-badge.sem-2b{color:#4d7c0f;background:#f4fbe6}
.freq-badge.sem-3a{color:#0d9488;background:#e6f7f5}
.freq-badge.sem-3b{color:#0284c7;background:#e5f3fc}
.freq-badge.sem-other{color:#78716c;background:#f4f3f2}
.freq-badge.sem-g1{color:#166534;background:#ecfdf5}
.freq-badge.sem-g2{color:#15803d;background:#f0fdf4}
.freq-badge.sem-g3a{color:#047857;background:#ecfdf5}
.freq-badge.sem-g3b{color:#0f766e;background:#f0fdfa}
.freq-badge.sem-g4a{color:#a16207;background:#fefce8}
.freq-badge.sem-g4b{color:#92400e;background:#fffbeb}
.freq-badge.sem-g5a{color:#c2410c;background:#fff7ed}
.freq-badge.sem-g5b{color:#9a3412;background:#ffedd5}
.freq-badge.sem-g6a{color:#6d28d9;background:#f5f3ff}
.freq-badge.sem-g6b{color:#b91c1c;background:#fef2f2}
.freq-chip.sem-phrase,.freq-badge.sem-phrase{border-color:#93c5fd}
.freq-badge.sem-phrase{color:#1d4ed8;background:#eff6ff}
.freq-chip.sem-phrase-primary,.freq-badge.sem-phrase-primary{border-color:#86efac}
.freq-badge.sem-phrase-primary{color:#15803d;background:#f0fdf4}
/* 初中册次：七上～九年级 */
.freq-chip.sem-j7a,.freq-badge.sem-j7a{border-color:#86efac}
.freq-chip.sem-j7b,.freq-badge.sem-j7b{border-color:#bbf7d0}
.freq-chip.sem-j8a,.freq-badge.sem-j8a{border-color:#fde68a}
.freq-chip.sem-j8b,.freq-badge.sem-j8b{border-color:#fdba74}
.freq-chip.sem-j9,.freq-badge.sem-j9{border-color:#c4b5fd}
.freq-badge.sem-j7a{color:#166534;background:#ecfdf5}
.freq-badge.sem-j7b{color:#15803d;background:#f0fdf4}
.freq-badge.sem-j8a{color:#a16207;background:#fefce8}
.freq-badge.sem-j8b{color:#c2410c;background:#fff7ed}
.freq-badge.sem-j9{color:#6d28d9;background:#f5f3ff}

/* ===== 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);
  max-height:calc(100vh - 48px);overflow-y:auto;
}
@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;
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding-right:28px
}
.mw-copy{
  cursor:pointer;border-radius:6px;padding:0 2px;margin:0 -2px;
  transition:background .14s,color .14s;user-select:none;
}
.mw-copy:hover{background:var(--accent-soft);color:var(--accent)}
.mw-copy:active{transform:scale(.98)}
.mw-save,.mw-edit{
  font:inherit;font-size:12px;font-weight:650;line-height:1.2;
  padding:6px 10px;border-radius:8px;border:1px solid #e8c4b8;
  background:var(--accent-soft);color:var(--accent);cursor:pointer;
  white-space:nowrap;flex:0 0 auto
}
.mw-save:hover,.mw-edit:hover{background:#fff;border-color:var(--accent)}
.mw-save.on{background:var(--surface-2);border-color:var(--line);color:var(--ink-3)}
.mw-save.on:hover{border-color:#d0c4bb;color:var(--ink-2)}
.mw-edit{border-color:#c9cedd;background:#f5f6fa;color:var(--ink-2)}
.mw-edit:hover{border-color:#9aa3b8;color:var(--ink)}
.mw .speak-btn{flex:0 0 auto;margin-top:2px}
.mp{font-size:12.5px;color:var(--ink-3);margin-top:5px}
.mp .ph-alt{cursor:pointer}
.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)}
.msrc-t{margin-bottom:8px}
.msrc-t b{color:var(--accent);font-size:13px}
.msrc-break{color:var(--ink-3);font-weight:500;margin-left:4px}
.sg-tag{
  flex:0 0 auto;font-size:10px;font-weight:700;line-height:1.4;
  padding:1px 6px;border-radius:5px;letter-spacing:.02em;
}
.sg-tag.from-primary{color:#15803d;background:#e8f8ee}
.sg-tag.from-junior{color:#6d28d9;background:#f1e9ff}
.sg-tag.from-senior{color:#c2410c;background:#fff1e6}
/* 出现在多首歌里的可跳转列表 */
.songlist{display:flex;flex-direction:column;gap:5px;max-height:min(46vh,340px);overflow-y:auto;padding-right:2px}
.songitem{
  display:flex;align-items:center;gap:8px;padding:8px 10px 8px 8px;border-radius:9px;
  background:var(--surface-2);border:1px solid var(--line-2);transition:.15s;min-width:0;flex:none;
}
.songitem:hover{background:var(--accent-soft);border-color:#f0d9cf}
.songitem .st{font-size:13px;color:var(--ink);font-weight:600;flex:0 0 auto;max-width:46%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.songitem .sc{font-size:11px;color:var(--ink-3);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.songitem .go{font-size:11px;color:var(--accent);flex:0 0 auto}
.songitem.cur{background:var(--teal-soft);border-color:#cfe3df}
.songitem .cur-tag{font-size:10px;color:var(--teal);font-weight:600;flex:0 0 auto;padding:1px 6px;border-radius:5px;background:#fff}
.songitem.stg-primary{box-shadow:inset 3px 0 0 #16a34a}
.songitem.stg-junior{box-shadow:inset 3px 0 0 #7c3aed}
.songitem.stg-senior{box-shadow:inset 3px 0 0 var(--accent)}
.modal-actions{display:flex;gap:9px;margin-top:18px}

/* ===== 教材记忆法（拆分 / 谐音 / 联想 / 例句）===== */
.mn{
  margin-top:16px;padding:14px 15px;border-radius:12px;
  background:linear-gradient(160deg,var(--accent-soft),var(--surface-2));
  border:1px solid #f2ded4;
}
.mn-t{
  font-size:11px;font-weight:700;color:var(--accent);letter-spacing:.06em;
  margin-bottom:9px;display:flex;align-items:center;gap:6px;flex-wrap:wrap;
}
.mn-t::before{content:"";width:3px;height:12px;border-radius:2px;background:var(--accent)}
.mn-v.is-empty{color:var(--ink-3);font-style:normal;opacity:.72}
.mn-edit-tip{font-size:11px;color:var(--ink-3);margin:8px 0 0;line-height:1.5}
.mn-edited.mn-shared{color:#2f6f4e;background:#eef8f2;border-color:#b7dcc8}
.mn-edited.mn-admin{color:#8a4a2b;background:#fff6f0;border-color:#e4b9a8}
.mn-edited{  font-size:10px;font-weight:650;letter-spacing:0;color:#8a4a2b;
  background:rgba(255,255,255,.85);border:1px solid #f0d9cf;
  border-radius:999px;padding:1px 7px;
}
.mn-acts{margin-left:auto;display:inline-flex;gap:6px;align-items:center}
.mn-btn{
  border:1px solid #f0d9cf;background:rgba(255,255,255,.9);color:var(--accent);
  font-size:11px;font-weight:650;padding:3px 9px;border-radius:7px;cursor:pointer;
  letter-spacing:0;transition:background .14s,border-color .14s;
}
.mn-btn:hover{background:#fff;border-color:#e4b9a8}
.mn-btn.ghost{color:var(--ink-3);border-color:var(--line-2);font-weight:600}
.mn-btn.ghost:hover{color:var(--ink-2);border-color:var(--line)}
.mn-row{display:flex;gap:10px;align-items:flex-start;padding:4px 0;font-size:13px;line-height:1.65}
.mn-k{
  flex:0 0 30px;text-align:center;font-size:11px;font-weight:600;color:var(--ink-3);
  background:rgba(255,255,255,.7);border-radius:5px;padding:2px 0;margin-top:1px;
}
.mn-v{flex:1;min-width:0;color:var(--ink-2);word-break:break-word}
.mn-code-link{
  display:inline;margin-left:8px;padding:0;border:0;background:none;
  font:inherit;font-size:12px;font-weight:700;color:var(--accent);
  text-decoration:underline;text-underline-offset:2px;cursor:pointer;vertical-align:baseline
}
.lc-modal{
  width:min(560px, calc(100vw - 24px));max-width:100%;
  max-height:min(86vh, 720px);overflow:auto;
  padding:18px 16px 16px;box-sizing:border-box
}
.lc-lead,.lc-foot{font-size:12px;color:var(--ink-3);line-height:1.55;margin:0 0 10px}
.lc-foot{margin-top:10px;margin-bottom:0}
.lc-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.lc-admin,.lc-batch{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0 0 10px;padding:8px 10px;border-radius:10px;background:#fff7f2;border:1px solid #f0d8c8
}
.lc-batch{background:#f4f8f6;border-color:#c9ddd4}
.lc-batch.lc-book{background:#f5f6fa;border-color:#c9cedd}
.lc-admin-tip{font-size:11px;color:var(--ink-3);line-height:1.45;flex:1;min-width:160px}
.lc-list{display:flex;flex-direction:column;gap:6px;max-height:min(52vh,420px);overflow:auto}
.lc-row{
  display:grid;grid-template-columns:52px 1fr 1fr auto;gap:6px;align-items:center
}
.lc-code{
  font-weight:800;font-size:14px;color:var(--ink);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;text-align:center
}
.lc-m{
  width:100%;box-sizing:border-box;border:1px solid #e8d5c8;border-radius:8px;
  padding:6px 8px;font:inherit;font-size:13px;color:var(--ink);background:#fff;outline:none
}
.lc-m:focus{border-color:#d8b09a;box-shadow:0 0 0 3px rgba(207,81,51,.08)}
@media (max-width:420px){
  .lc-row{grid-template-columns:36px minmax(0,1fr) minmax(0,1fr) auto;gap:4px}
  .lc-code{font-size:13px}
  .lc-m{padding:6px 6px;font-size:12px}
}
.mn-hn .mn-v{color:#8a4a2b;font-weight:600}
.mn-lk .mn-v{color:var(--ink)}
.mn-hn .mn-v.is-empty,.mn-lk .mn-v.is-empty{color:var(--ink-3);font-weight:400}
.mn-input{
  flex:1;min-width:0;resize:vertical;box-sizing:border-box;
  border:1px solid #e8d5c8;border-radius:8px;padding:6px 9px;
  font:inherit;font-size:13px;line-height:1.55;color:var(--ink);
  background:#fff;outline:none;transition:border-color .14s,box-shadow .14s;
}
.mn-input:focus{border-color:#d8b09a;box-shadow:0 0 0 3px rgba(207,81,51,.08)}
.mn-hn .mn-input{color:#8a4a2b;font-weight:600}
.mn-edit-acts{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.mn-ex{
  margin-top:8px;padding-top:9px;border-top:1px dashed rgba(160,120,100,.35);
}
.mn-ex-en{font-size:13px;color:var(--ink);line-height:1.7;font-family:var(--serif)}
.mn-ex-cn{font-size:12px;color:var(--ink-3);margin-top:3px;line-height:1.6}
.mn-img{margin-top:12px;padding-top:10px;border-top:1px dashed var(--line-2)}
.mn-img-bar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.mn-img-hint{font-size:11px;color:var(--ink-3);margin-top:6px;line-height:1.5}
.mn-img-host{margin-top:10px;display:flex;justify-content:center;align-items:center}
.mn-img-pic{
  display:block;width:100%;max-width:320px;margin:0 auto;border-radius:10px;
  border:1px solid var(--line-2);background:#f7f3ef
}
.mn-img-loading,.mn-img-err{
  font-size:12px;color:var(--ink-3);padding:14px 12px;width:100%;text-align:center;
  background:#f7f3ef;border-radius:8px;border:1px dashed var(--line-2)
}
.mn-img-loading-busy{padding:16px 14px 14px}
.mn-img-loading-title{font-size:13px;font-weight:650;color:var(--ink-2)}
.mn-img-loading-clock{
  margin-top:8px;font-size:28px;line-height:1;font-weight:700;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;color:var(--ink);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace
}
.mn-img-loading-eta{margin-top:8px;font-size:11px;color:var(--ink-3);line-height:1.5}
.mn-img-loading-bar{
  margin:12px auto 0;width:min(220px,100%);height:4px;border-radius:999px;
  background:rgba(0,0,0,.06);overflow:hidden
}
.mn-img-loading-bar>i{
  display:block;height:100%;width:0;border-radius:inherit;
  background:var(--accent);transition:width .25s linear
}
.mn-img-err{color:#a33;border-color:#e8c4b8;background:#fff6f3}
.mn-img-err .mn-img-set,
.mn-img-link{
  display:inline;margin-left:6px;padding:0;border:0;background:none;
  font:inherit;font-size:12px;font-weight:700;color:var(--accent);text-decoration:underline;
  text-underline-offset:2px;cursor:pointer
}
.mn-img-link{margin-left:2px}
.mn-img-badge{
  font-size:11px;font-weight:650;padding:2px 8px;border-radius:999px;
  border:1px solid var(--line-2);color:var(--ink-3);background:#fff
}
.mn-img-badge.shared{color:#2f6f4e;border-color:#b7dcc8;background:#eef8f2}
.mn-img-badge.mine{color:#8a4a2b;border-color:#e4b9a8;background:#fff6f0}
.my-img-modal{
  width:min(520px, calc(100vw - 24px));max-width:100%;
  padding:18px 16px 16px;box-sizing:border-box
}
.my-img-modal .close{position:absolute;right:10px;top:10px}
#myImgMask.modal-mask,
.yy-confirm-mask.modal-mask{padding:max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom))}
.yy-confirm-modal{
  width:min(360px, calc(100vw - 24px));max-width:100%;
  padding:20px 18px 16px;box-sizing:border-box
}
.yy-confirm-msg{
  margin:0 0 16px;font-size:14px;line-height:1.6;color:var(--ink);
  word-break:break-word
}
.yy-confirm-acts{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}
.yy-confirm-acts .btn{min-width:72px}
.av-img-base-row{display:flex;gap:8px;align-items:center}
.av-img-base-row select{flex:1;min-width:0}
.av-img-label-row{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  width:100%;white-space:nowrap
}
.av-img-key-apply{
  flex:0 0 auto;margin-left:auto;font-size:12px;font-weight:650;color:var(--accent);
  text-decoration:underline;text-underline-offset:2px;line-height:1.4
}
.av-img-key-apply[hidden]{display:none!important}
.av-img-test-msg{font-size:12px;margin:8px 0 0;line-height:1.55;color:var(--ink-3)}
.av-img-test-msg.ok{color:var(--teal)}
.av-img-test-msg.err{color:var(--accent)}
.av-img-cfg{
  margin-bottom:14px;width:100%;max-width:100%;box-sizing:border-box;
  overflow:hidden;
}
.page-admin-vocab{max-width:none;width:100%}
.page-admin-vocab .av-img-cfg{width:100%}
.av-img-cfg .av-form-h{margin-bottom:8px}
.av-img-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px 12px;width:100%;min-width:0}
@media(max-width:720px){.av-img-grid{grid-template-columns:minmax(0,1fr)}}
.av-img-grid label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--ink-3);min-width:0}
.av-img-grid label.full{grid-column:1/-1}
.av-img-grid label[hidden],#myImgClearKey[hidden],#myImgKeyHint[hidden],#myImgModelNote[hidden],#myImgSave[hidden],#myImgPromote[hidden]{display:none!important}
.mn-img-hint .mn-img-link{margin-left:4px}
.av-img-grid input,.av-img-grid textarea,.av-img-grid select{
  font:inherit;font-size:13px;color:var(--ink);padding:8px 10px;
  border:1px solid var(--line);border-radius:8px;background:#fff;
  width:100%;max-width:100%;box-sizing:border-box;min-width:0
}
.av-img-grid textarea{min-height:72px;resize:vertical;line-height:1.45;font-family:ui-monospace,Consolas,monospace}
.av-img-model-row{display:flex;gap:8px;align-items:center}
.av-img-model-row select{flex:1;min-width:0}
.av-img-model-custom{margin-top:6px}
.av-img-model-row .btn{flex:0 0 auto;white-space:nowrap}
.av-img-cfg-note{font-size:12px;color:var(--ink-3);margin:8px 0 0;line-height:1.55}
.av-img-platform-now{
  margin:0 0 6px;padding:10px 12px;border-radius:10px;
  background:linear-gradient(135deg,#eef6ff,#f4faf4);
  border:1px solid #c5d8ef;color:#1a3a5c;
  font-size:13px;font-weight:650;line-height:1.45;word-break:break-word
}
.av-img-you-now{
  margin:0 0 10px;padding:8px 12px;border-radius:10px;
  background:#fff8ef;border:1px solid #ead2b0;color:#6a4a1a;
  font-size:12.5px;font-weight:600;line-height:1.45;word-break:break-word
}
.av-img-profile-switch{
  display:flex;flex-wrap:wrap;gap:8px;margin:0 0 10px
}
.av-img-profile-switch[hidden]{display:none!important}
.av-img-prof-btn{max-width:100%}
.av-img-cfg-acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;align-items:center}
.av-img-key-hint{font-size:12px;color:var(--ink-3)}
.av-usage-wrap{margin-top:10px;min-width:0}
.av-usage-scroll{
  overflow:auto;max-height:min(62vh,560px);
  border:1px solid var(--line);border-radius:10px;background:#fff
}
.av-usage-table{
  width:100%;border-collapse:collapse;font-size:12.5px;line-height:1.35;
  min-width:760px
}
.av-usage-table th,.av-usage-table td{
  padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;
  vertical-align:middle;white-space:nowrap
}
.av-usage-table th{
  position:sticky;top:0;z-index:1;background:#f6f7f9;color:var(--ink-3);
  font-weight:650;font-size:12px
}
.av-usage-table .av-usage-sub{font-weight:500;opacity:.75;font-size:10.5px}
.av-usage-table tbody tr:hover{background:#fafbfd}
.av-usage-table td.num{font-variant-numeric:tabular-nums;text-align:right}
.av-usage-mini{
  margin-top:3px;font-size:11px;line-height:1.25;color:var(--ink-2);
  font-variant-numeric:tabular-nums;white-space:nowrap
}
.av-usage-mini.muted{color:var(--ink-3)}
.av-usage-nick{
  max-width:108px;font-weight:600;color:var(--ink);white-space:nowrap
}
.av-usage-note{min-width:96px;max-width:140px}
.av-usage-note-input{
  width:100%;box-sizing:border-box;font:inherit;font-size:12px;
  padding:4px 6px;border:1px solid transparent;border-radius:6px;
  background:transparent;color:var(--ink);min-width:0;
}
.av-usage-note-input:hover{border-color:var(--line);background:var(--surface-2)}
.av-usage-note-input:focus{
  outline:none;border-color:var(--accent);background:#fff;
  box-shadow:0 0 0 2px var(--accent-soft);
}
.av-usage-note-input:disabled{opacity:.65}
.av-usage-nick-btn{
  appearance:none;border:0;background:transparent;padding:0;margin:0;
  max-width:88px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  font:inherit;font-weight:650;color:var(--ink);cursor:pointer;vertical-align:middle
}
.av-usage-nick-btn:hover{color:var(--teal);text-decoration:underline}
.av-usage-sw .btn{padding:3px 8px;font-size:11.5px;line-height:1.2}
.av-usage-locked{font-size:11.5px;color:var(--ink-3)}
.av-usage-time{color:var(--ink-3);font-variant-numeric:tabular-nums}
.av-usage-song{min-width:108px;max-width:150px;white-space:normal}
.av-usage-actv{display:flex;flex-direction:column;gap:2px;line-height:1.25}
.av-usage-actv b{font-weight:650;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:140px}
.av-usage-actv span{font-size:11px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.av-usage-badge{
  display:inline-block;margin-left:4px;padding:1px 5px;border-radius:999px;
  font-size:10px;font-weight:700;vertical-align:1px;background:#e8eef8;color:#2a4a7a
}
.av-usage-badge.admin{background:#fff0e8;color:#a24a1a}
.av-usage-badge.off{background:#f1eee8;color:#8a8074}
.av-usage-badge.ghost{background:#f3e8e8;color:#9a5050}
.av-usage-empty{opacity:.72}
.av-usage-ghost{opacity:.55}
.av-usage-self{background:#f7fbf8}
.av-usage-self td:first-child{box-shadow:inset 3px 0 0 var(--teal)}
#avUsageGhosts.on{border-color:var(--teal);color:var(--teal)}

/* 词形变化 / 别称 / 例句（来自「初中1600词汇对照表」doc） */
.mn.extra{background:var(--surface-2);border-color:var(--line)}
.ex-row{display:flex;gap:10px;align-items:flex-start;padding:3px 0;font-size:12.5px;line-height:1.6}
.ex-k{
  flex:0 0 30px;text-align:center;font-size:11px;font-weight:600;color:var(--ink-3);
  background:rgba(255,255,255,.7);border-radius:5px;padding:2px 0;margin-top:1px;
}
.ex-v{flex:1;min-width:0;color:var(--ink-2);word-break:break-word}
.ex-block{
  margin-top:9px;padding-top:9px;border-top:1px dashed rgba(160,120,100,.35);
}
.ex-t{font-size:11px;font-weight:700;color:var(--accent);letter-spacing:.06em;margin-bottom:6px}
.ex-en{font-size:13px;color:var(--ink);line-height:1.7;font-family:var(--serif)}
.ex-cn{font-size:12px;color:var(--ink-3);margin-top:3px;line-height:1.6}

/* 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;
    flex-direction:column;align-items:flex-end;justify-content:center;
  }
  .pl-right-row{gap:5px}
  .pl-right-row .pbtn{width:32px;height:32px}
  .pl-right-row .speed-btn{min-width:44px;padding:5px 10px;font-size:12px}
  .player{left:0}
}
@media (max-width:820px){
  /* ===== 手机：侧栏变底部导航 ===== */
  :root{--yy-mob-nav:calc(52px + env(safe-area-inset-bottom,0px))}
  .app{display:block}
  .sidebar{
    position:fixed;top:auto;left:0;right:0;bottom:0;z-index:50;
    width:100%;flex:none;height:var(--yy-mob-nav);box-sizing:border-box;
    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 env(safe-area-inset-bottom,0px);
    box-shadow:0 -4px 20px rgba(34,30,26,.08);
  }
  .brand,.nav-label,.side-foot{display:none}
  /* 手机端学段切换移到页面顶部（侧栏变成底部导航了） */
  .stage-switch{display:none}
  .kicker-link{display:inline}
  .stage-bar{
    display:flex;gap:6px;margin:14px 14px 0;padding:4px;
    background:var(--surface);border:1px solid var(--line);border-radius:12px;
    box-shadow:var(--shadow-s);overflow-x:auto;
  }
  .stage-bar .stage-btn{
    flex:1 1 0;min-width:74px;justify-content:center;padding:7px 8px;font-size:12.5px;
    background:transparent;border:none;
  }
  .stage-bar .stage-btn .sc{display:none}
  .nav{flex-direction:row;flex:1;justify-content:stretch;align-items:stretch;gap:0;margin:0;width:100%;min-width:0}
  .nav-item{
    flex:1 1 0;flex-direction:column;gap:1px;font-size:9.5px;padding:5px 2px;
    justify-content:center;align-items:center;border-radius:8px;min-width:0;max-width:none;
  }
  .nav-item .ico{width:20px;height:20px;flex:0 0 20px}
  .nav-item > span{
    display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
    line-height:1.15;text-align:center;
  }
  .main{padding:14px 14px calc(58px + env(safe-area-inset-bottom,0px))}
  body.has-player{padding-bottom:calc(var(--yy-mob-nav) + 76px)}
  .player{left:0;bottom:var(--yy-mob-nav);height:76px}
  .toast{bottom:calc(var(--yy-mob-nav) + 88px)}
  /* 浮动按钮要浮在播放器之上、底部导航之上 */
  .back-fab{
    right:14px;left:14px;bottom:calc(var(--yy-mob-nav) + 88px);
    justify-content:center;padding:11px 16px;font-size:13px;
  }

  .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}
  .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;align-items:center}
  .pl-progress{gap:6px}
  .pl-progress .time{width:30px;flex:0 0 30px;font-size:10px}
  .pl-right{gap:4px;flex:0 0 auto;width:auto}
  .pl-right-row .pbtn{width:32px;height:32px}
  .pl-right-row .speed-btn{min-width:46px;padding:5px 11px;font-size:12px;border-radius:6px}
  .vol{gap:3px;font-size:10.5px}
  .vol input{width:56px}
  .pbtn{width:30px;height:30px}
  .pbtn.play{width:36px;height:36px}
  .pl-btns{gap:2px}
  .pbtn[data-act="songPrev"],.pbtn[data-act="songNext"]{width:28px;height:28px}
  .pico{font-size:17px}
  .pico-sm{font-size:15px}
  .hero{flex-direction:column-reverse;gap:14px}
  .ring-wrap{align-self:flex-start}
}

/* ===== 跟读练习（688 高频词 · 真人朗读）===== */
.rp-tabs{
  display:flex;gap:6px;margin-bottom:16px;padding:4px;
  background:var(--surface-2);border:1px solid var(--line-2);border-radius:12px;width:fit-content;max-width:100%;
}
.rp-tab{
  padding:8px 16px;border-radius:9px;font-size:13px;font-weight:600;color:var(--ink-3);
  transition:.15s;
}
.rp-tab:hover{color:var(--ink)}
.rp-tab.on{background:var(--surface);color:var(--accent);box-shadow:var(--shadow-s)}

.rp-toolbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:16px;width:100%;min-width:0}
.rp-toolbar .chips{flex:0 0 auto}
.rp-auto{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--ink-3);cursor:pointer;user-select:none}
.rp-auto input{width:15px;height:15px;accent-color:var(--accent);cursor:pointer}

.rp-stage{max-width:640px}

/* ===== 音标学习 ===== */
.ipa-stage{max-width:920px;width:100%;min-width:0}
/* 分类条：按屏宽均分换行（4+3），最后一行也会拉满，微信不再横向溢出 */
#ipaChips{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  width:100%;
  max-width:100%;
  flex:1 1 100%;
  min-width:0;
  box-sizing:border-box;
}
#ipaChips .chip{
  flex:1 1 calc(25% - 6px);
  min-width:calc(25% - 6px);
  box-sizing:border-box;
  text-align:center;
  padding:7px 4px;
  font-size:12px;
  line-height:1.25;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  border-radius:10px;
}
.ipa-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:10px;
  width:100%;min-width:0;
}
.ipa-tile{
  position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:4px;
  padding:14px 14px 12px;border-radius:14px;text-align:left;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-s);
  transition:.15s;min-height:92px;
}
.ipa-tile:hover{border-color:rgba(207,81,51,.28);transform:translateY(-1px);box-shadow:var(--shadow-m)}
.ipa-sym{font-family:var(--serif);font-size:22px;font-weight:650;color:var(--ink);letter-spacing:.02em}
.ipa-cat{font-size:11px;color:var(--ink-3)}
.ipa-exw{font-size:12px;color:var(--ink-2);margin-top:2px}
.ipa-play{
  position:absolute;right:10px;top:10px;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:10px;color:var(--accent);
  background:var(--accent-soft);border:1px solid rgba(207,81,51,.14);
}
.ipa-play:hover{background:var(--accent);color:#fff}
.ipa-hint{margin:14px 2px 0;font-size:12px;color:var(--ink-3)}
.ipa-card .ipa-big{font-family:var(--serif);letter-spacing:.04em}
.ipa-desc{font-size:14.5px;color:var(--ink-2);margin:4px 0 12px;line-height:1.7}
.ipa-tip{
  font-size:12.5px;color:var(--ink-2);background:var(--surface-2);border:1px solid var(--line-2);
  border-radius:10px;padding:8px 12px;margin:0 auto 8px;max-width:420px;text-align:left;line-height:1.65;
}
.ipa-tip b{color:var(--gold);margin-right:6px;font-size:11px}
.ipa-exs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:14px 0 6px}
.ipa-ex{
  display:flex;flex-direction:column;align-items:flex-start;gap:2px;min-width:110px;
  padding:10px 12px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line-2);
  text-align:left;transition:.14s;
}
.ipa-ex:hover{border-color:rgba(207,81,51,.3);background:var(--accent-soft)}
.ipa-ex-w{font-size:15px;font-weight:650;color:var(--ink)}
.ipa-ex-p{font-size:11.5px;color:var(--ink-3);font-family:var(--serif)}
.ipa-ex-m{font-size:12px;color:var(--ink-2)}
.ipa-demo{margin:14px auto 4px;max-width:420px;text-align:center}
.ipa-demo-tabs{display:flex;gap:6px;margin-bottom:8px}
.ipa-demo-tab{
  flex:1;padding:8px 10px;border-radius:10px;border:1px solid var(--line);
  background:var(--paper-2);color:var(--ink-2);font-size:13px;font-weight:600;cursor:pointer
}
.ipa-demo-tab.on{background:var(--accent);border-color:var(--accent);color:#fff}
.ipa-demo-frame{
  position:relative;margin:0 auto;border-radius:14px;overflow:hidden;background:#0f1419;
  border:1px solid rgba(0,0,0,.08);aspect-ratio:16/10;max-height:280px
}
.ipa-demo-video{display:block;width:100%;height:100%;object-fit:contain;background:#0f1419}
.ipa-demo-empty{
  display:flex;align-items:center;justify-content:center;height:100%;
  color:rgba(255,255,255,.55);font-size:13px
}
.ipa-pairs{margin:16px auto 6px;max-width:420px;text-align:center}
.ipa-pairs-h{display:flex;align-items:baseline;justify-content:center;gap:10px;margin:0 2px 10px;flex-wrap:wrap}
.ipa-pairs-t{font-size:13px;font-weight:700;color:var(--ink)}
.ipa-pairs-s{font-size:11px;color:var(--ink-3)}
.ipa-pairs-list{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.ipa-pair{
  display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper-2);color:var(--ink);font-size:13px;
  font-family:var(--serif);font-weight:700;cursor:pointer;line-height:1
}
.ipa-pair i{font-style:normal;color:var(--ink-3);font-size:12px}
.ipa-pair.on,.ipa-pair:hover{border-color:rgba(207,81,51,.35);background:var(--accent-soft);color:var(--accent)}
.ipa-cmp{
  margin-top:10px;padding:12px;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(180deg,var(--paper-2),var(--paper))
}
.ipa-cmp-note{font-size:12.5px;color:var(--ink-2);margin-bottom:10px;line-height:1.5}
.ipa-cmp-cols{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}
.ipa-cmp-col{
  display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 8px;
  border-radius:12px;border:1px solid var(--line);background:var(--paper);cursor:pointer
}
.ipa-cmp-col:hover{border-color:rgba(207,81,51,.3)}
.ipa-cmp-sym{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--ink)}
.ipa-cmp-lab{font-size:11px;color:var(--ink-3)}
.ipa-cmp-play{font-size:12px;color:var(--accent);font-weight:600;margin-top:2px}
#ipaCmpBoth{width:100%}
.rp-card{padding:26px 28px 20px;text-align:center}
.rp-meta{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.rp-idx{font-size:12px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.rp-page{font-size:11.5px;color:var(--ink-3);opacity:.8}

.rp-word{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:6px}
.rp-w{
  font-family:var(--serif);font-size:46px;font-weight:600;line-height:1.15;
  letter-spacing:-.02em;color:var(--ink);
}
.rp-word .speak-btn{width:40px;height:40px}
.rp-word .speak-btn svg{width:24px;height:24px}
.rp-w{cursor:pointer;border-radius:6px;padding:0 2px;margin:0 -2px}
.rp-w:hover{background:var(--accent-soft);color:var(--accent)}
.rp-ph{font-size:14px;color:var(--ink-3);margin-bottom:10px;font-family:var(--serif)}
.rp-mean{font-size:15px;color:var(--ink-2);margin-bottom:14px}
.rp-mn{
  display:block;text-align:left;font-size:12.5px;color:var(--ink-2);
  background:var(--gold-soft);border:1px solid #efe2c6;border-radius:var(--r-s);
  padding:8px 12px;margin-bottom:16px;cursor:pointer;max-width:100%;
  word-break:break-word;line-height:1.55
}
.rp-mn.is-empty{opacity:.88}
.rp-mn b{
  display:inline-block;background:var(--gold);color:#fff;border-radius:4px;
  font-size:11px;font-weight:600;padding:1px 5px;margin-right:6px;vertical-align:1px;
}
.rp-mn:hover{border-color:var(--gold)}

.rp-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:16px}
.rp-nav{display:flex;align-items:center;justify-content:center;gap:16px;padding-top:14px;border-top:1px solid var(--line-2)}
.rp-arrow{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--line);
  color:var(--ink-2);font-size:19px;line-height:1;display:flex;align-items:center;justify-content:center;
  transition:.14s;background:var(--surface);
}
.rp-arrow:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.rp-hint{font-size:11.5px;color:var(--ink-3);opacity:.75}

@media (max-width:820px){
  /* 音标分类：手机两行 4+3 均分拉满 */
  #ipaChips{gap:5px}
  #ipaChips .chip{padding:8px 2px;font-size:11.5px;border-radius:9px;min-width:calc(25% - 5px);flex-basis:calc(25% - 5px)}
  .ipa-exs{gap:6px}
  .ipa-ex{min-width:0;flex:1 1 calc(33.33% - 6px);max-width:100%}
  .rp-meta{gap:8px}
  .rp-meta .btn{flex:0 0 auto}
}
@media (max-width:340px){
  /* 极窄屏改为每行 3 个 */
  #ipaChips .chip{min-width:calc(33.33% - 5px);flex-basis:calc(33.33% - 5px);font-size:11px}
}
@media (max-width:680px){
  .rp-card{padding:20px 16px 16px}
  .rp-w{font-size:36px}
  .rp-word .speak-btn{width:34px;height:34px}
  .rp-word .speak-btn svg{width:21px;height:21px}
  .rp-hint{display:none}
  .rp-tabs{width:100%;max-width:100%;box-sizing:border-box}
  .rp-tab{flex:1;text-align:center;padding:9px 10px;min-width:0}
  .ipa-grid{grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:8px}
  .ipa-tile{padding:12px 12px 10px;min-height:84px}
  .ipa-sym{font-size:19px}
  .ipa-card .ipa-big{font-size:40px}
  .ipa-demo-frame{max-height:220px;aspect-ratio:16/11}
  .ipa-pair{padding:7px 10px;font-size:12.5px}
  .ipa-cmp-sym{font-size:20px}
}