/* ================= 英语精读工作台 · 样式 ================= */
:root{
  --bg:#F5F6F8;
  --card:#FFFFFF;
  --ink:#1E2330;
  --ink2:#59617A;
  --ink3:#8A93A8;
  --line:#E7EAF0;
  --line2:#F0F2F6;
  --accent:#E8500F;
  --accent-d:#C4400B;
  --accent-s:#FFF3EC;
  --accent-s2:#FFE6D9;
  --blue:#2563EB;
  --blue-s:#EEF4FF;
  --green:#159A5A;
  --green-s:#EAF7F0;
  --amber:#B7791F;
  --radius:14px;
  --radius-s:10px;
  --shadow:0 1px 2px rgba(24,32,56,.05), 0 8px 24px -12px rgba(24,32,56,.12);
  --mono:'SF Mono',ui-monospace,Consolas,'Cascadia Mono',Menlo,monospace;
}
*{box-sizing:border-box;}
[hidden]{display:none !important;}
html,body{height:100%;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.6 -apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
button,input,select{font-family:inherit;font-size:inherit;color:inherit;}
hr{border:0;border-top:1px solid var(--line);margin:16px 0;}
kbd{
  font:11px/1 var(--mono);background:#F2F4F8;border:1px solid var(--line);
  border-bottom-width:2px;border-radius:5px;padding:3px 5px;color:var(--ink2);margin:0 1px;
}
::selection{background:var(--accent-s2);}

/* ---------------- 顶栏 ---------------- */
.topbar{
  position:sticky;top:0;z-index:60;display:flex;align-items:center;gap:20px;
  padding:0 22px;height:60px;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.logo{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF7A2F,#E8500F);color:#fff;font-weight:800;
  font-size:13px;letter-spacing:.5px;box-shadow:0 4px 10px -4px rgba(232,80,15,.6);
}
.brand-txt{display:flex;flex-direction:column;line-height:1.25;}
.brand-txt b{font-size:15px;letter-spacing:.2px;}
.brand-txt span{font-size:11.5px;color:var(--ink3);}
.tabs{display:flex;gap:2px;margin-left:8px;}
.tab{
  border:0;background:none;padding:8px 14px;border-radius:9px;cursor:pointer;
  color:var(--ink2);font-weight:600;font-size:14px;display:flex;align-items:center;gap:6px;
  transition:.15s;
}
.tab:hover{background:#F3F5F9;color:var(--ink);}
.tab.on{background:var(--accent-s);color:var(--accent-d);}
.badge{
  font-style:normal;font-size:11px;background:#EDF0F5;color:var(--ink2);
  border-radius:20px;padding:1px 7px;font-weight:700;min-width:18px;text-align:center;
}
.tab.on .badge{background:var(--accent);color:#fff;}
.badge.hot{background:var(--accent);color:#fff;}
.top-right{margin-left:auto;display:flex;align-items:center;gap:9px;}
.dot{width:8px;height:8px;border-radius:50%;background:#C9CFDB;flex-shrink:0;}
.dot.ok{background:var(--green);box-shadow:0 0 0 3px var(--green-s);}
.dot.bad{background:#DC2626;box-shadow:0 0 0 3px #FEE2E2;}
.srv-txt{font-size:12px;color:var(--ink3);}
.icon-btn{
  border:1px solid var(--line);background:#fff;width:34px;height:34px;border-radius:9px;
  cursor:pointer;color:var(--ink2);display:grid;place-items:center;font-size:15px;transition:.15s;
}
.icon-btn:hover{background:#F6F8FB;color:var(--ink);border-color:#D8DDE7;}

/* ---------------- 视图 ---------------- */
.view{display:none;padding:20px 22px 60px;max-width:1900px;margin:0 auto;}
.view.on{display:block;}
#view-read.on{display:block;}

/* ---------------- 加载栏 ---------------- */
.loadbar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 14px;margin-bottom:16px;box-shadow:var(--shadow);
}
#urlInput{
  flex:1;min-width:320px;height:42px;padding:0 14px;border:1px solid var(--line);
  border-radius:var(--radius-s);background:#FAFBFD;outline:none;transition:.15s;
}
#urlInput:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--accent-s);}
.btn{
  border:1px solid var(--line);background:#fff;height:42px;padding:0 18px;border-radius:var(--radius-s);
  cursor:pointer;font-weight:600;color:var(--ink2);transition:.15s;white-space:nowrap;
}
.btn:hover{background:#F6F8FB;color:var(--ink);border-color:#D8DDE7;}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn.primary:hover{background:var(--accent-d);border-color:var(--accent-d);}
.btn.ghost{height:34px;padding:0 13px;font-size:13px;font-weight:600;}
.btn.danger{color:#DC2626;border-color:#F6D6D6;}
.btn.danger:hover{background:#FEF3F3;}
.btn.big{height:46px;padding:0 26px;font-size:15px;}
.btn.tiny{height:28px;padding:0 11px;font-size:12px;}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.demos{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink3);width:100%;}
.demo{color:var(--blue);border-bottom:1px dashed #B9CDF7;}
.demo:hover{color:var(--accent);border-color:var(--accent);}

/* ---------------- 三栏布局 ---------------- */
.read-grid{display:grid;grid-template-columns:340px minmax(0,1fr) 400px;gap:16px;align-items:start;}
.col-left{display:flex;flex-direction:column;gap:14px;position:sticky;top:76px;}
.col-mid{min-width:0;display:flex;flex-direction:column;gap:12px;}
.col-right{position:sticky;top:76px;}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);}

/* 播放器 */
.player-card{padding:12px;overflow:hidden;}
.player-wrap{
  position:relative;width:100%;aspect-ratio:16/9;background:#11141C;border-radius:var(--radius-s);
  overflow:hidden;
}
.player-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.player-ph{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:#7A8497;text-align:center;padding:18px;gap:4px;
}
.ph-icon{font-size:26px;opacity:.5;}
.player-ph p{margin:6px 0 0;font-size:13.5px;color:#98A2B3;}
.player-ph small{color:#5C6577;font-size:11.5px;}
.now-line{
  margin-top:11px;padding:11px 13px;background:#FAFBFD;border:1px solid var(--line2);
  border-radius:var(--radius-s);min-height:76px;display:flex;flex-direction:column;justify-content:center;
}
.now-en{font-size:15.5px;font-weight:600;line-height:1.45;color:var(--ink);word-break:break-word;}
.now-en .w{cursor:pointer;border-radius:3px;padding:0 1px;}
.now-en .w:hover{background:var(--accent-s2);}
.now-zh{font-size:13px;color:var(--ink2);margin-top:5px;line-height:1.5;}
.player-ctrl{display:flex;gap:7px;margin-top:10px;}
.player-ctrl.sub{margin-top:8px;align-items:center;flex-wrap:wrap;gap:10px;}
.cb{
  flex:1;height:36px;border:1px solid var(--line);background:#fff;border-radius:9px;cursor:pointer;
  font-size:13px;font-weight:600;color:var(--ink2);transition:.15s;
}
.cb:hover{background:#F6F8FB;color:var(--ink);}
.cb.main{background:var(--accent-s);border-color:var(--accent-s2);color:var(--accent-d);}
.cb.main:hover{background:var(--accent-s2);}
.cb.small{flex:0 0 auto;padding:0 12px;height:30px;font-size:12.5px;}
.sw{display:flex;align-items:center;gap:5px;font-size:12.5px;color:var(--ink2);cursor:pointer;user-select:none;}
.sw input{accent-color:var(--accent);width:15px;height:15px;cursor:pointer;}
.sw.speed{gap:4px;}
.sw select{height:28px;border:1px solid var(--line);border-radius:7px;background:#fff;padding:0 4px;font-size:12.5px;cursor:pointer;}

/* 课程信息 */
.info-card{display:flex;gap:11px;padding:11px;}
.info-thumb{width:86px;flex-shrink:0;border-radius:9px;overflow:hidden;background:#EDF0F5;aspect-ratio:16/9;}
.info-thumb img{width:100%;height:100%;object-fit:cover;display:block;}
.info-body{min-width:0;flex:1;}
.info-title{font-size:13.5px;font-weight:700;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.info-meta{font-size:11.5px;color:var(--ink3);margin:3px 0 7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.progress-line{height:5px;background:#EDF0F5;border-radius:4px;overflow:hidden;}
.pl-fill{height:100%;width:0;background:linear-gradient(90deg,#FF9A5B,var(--accent));transition:width .3s;}
.info-stats{display:flex;gap:11px;margin-top:8px;font-size:11.5px;color:var(--ink3);flex-wrap:wrap;}
.info-stats b{color:var(--ink);font-size:13px;}

/* 提示卡 */
.tip-card{padding:13px 15px;font-size:12.5px;}
.tip-card>b{font-size:12px;color:var(--ink3);letter-spacing:.4px;text-transform:uppercase;}
.tip-card ul{margin:8px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px;color:var(--ink2);}

/* ---------------- 字幕流 ---------------- */
.mid-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.mid-filter{display:flex;gap:6px;}
.chip{
  border:1px solid var(--line);background:#fff;padding:6px 13px;border-radius:20px;cursor:pointer;
  font-size:13px;color:var(--ink2);font-weight:600;transition:.15s;
}
.chip:hover{background:#F6F8FB;}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff;}
.mid-actions{margin-left:auto;display:flex;gap:8px;align-items:center;}
.search{
  height:34px;padding:0 12px;border:1px solid var(--line);border-radius:9px;background:#fff;
  outline:none;font-size:13px;width:170px;transition:.15s;
}
.search:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-s);}

.lines{display:flex;flex-direction:column;gap:8px;}
.line{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 14px;cursor:pointer;transition:.14s;position:relative;overflow:hidden;
}
.line:hover{border-color:#D3D9E4;box-shadow:0 4px 14px -8px rgba(24,32,56,.25);}
.line.on{border-color:var(--accent);background:#FFFCFA;box-shadow:0 0 0 3px var(--accent-s);}
.line.on::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);}
.line.star{background:#FFFDF5;}
.line-head{display:flex;align-items:center;gap:9px;margin-bottom:6px;}
.line-no{font:11px/1 var(--mono);color:var(--ink3);background:#F2F4F8;padding:3px 6px;border-radius:5px;}
.line-t{font:11px/1 var(--mono);color:var(--ink3);cursor:pointer;border-bottom:1px dashed transparent;}
.line-t:hover{color:var(--accent);border-color:var(--accent);}
.line-tools{margin-left:auto;display:flex;gap:4px;opacity:0;transition:.15s;}
.line:hover .line-tools,.line.on .line-tools{opacity:1;}
.tool{
  border:0;background:#F2F4F8;width:26px;height:26px;border-radius:7px;cursor:pointer;
  font-size:12.5px;color:var(--ink2);display:grid;place-items:center;transition:.15s;
}
.tool:hover{background:#E4E8F0;color:var(--ink);}
.tool.act{background:var(--accent-s);color:var(--accent-d);}
.line-en{font-size:15.5px;line-height:1.62;color:var(--ink);font-weight:500;word-break:break-word;}
.line-en .w{cursor:pointer;border-radius:3px;padding:0 1px;transition:background .12s;}
.line-en .w:hover{background:var(--accent-s2);}
.line-en .w.saved{background:var(--accent-s2);border-bottom:2px solid var(--accent);font-weight:700;}
.line-en .w.known{color:var(--ink3);}
.line-zh{font-size:13.5px;color:var(--ink2);margin-top:5px;line-height:1.55;word-break:break-word;}
.line-zh.pending{color:var(--ink3);font-style:italic;}
.line-mini{margin-top:7px;display:flex;gap:6px;flex-wrap:wrap;}
.tag{font-size:11px;padding:2px 8px;border-radius:20px;background:#F2F4F8;color:var(--ink2);font-weight:600;}
.tag.gram{background:var(--blue-s);color:#1D4ED8;}
.tag.clause{background:#F4F0FF;color:#6D28D9;}
.tag.chunk{background:var(--green-s);color:#0F7A46;}

.empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:56px 20px;text-align:center;color:var(--ink3);gap:3px;
}
.empty-emoji{font-size:34px;opacity:.55;margin-bottom:6px;}
.empty p{margin:4px 0;font-size:14.5px;color:var(--ink2);font-weight:600;}
.empty small{font-size:12.5px;}
.mid-foot{display:flex;justify-content:center;align-items:center;gap:12px;padding:8px;font-size:12.5px;color:var(--ink3);}

/* ---------------- 右侧详情面板 ---------------- */
.col-right{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);max-height:calc(100vh - 96px);overflow-y:auto;
}
.col-right::-webkit-scrollbar{width:8px;}
.col-right::-webkit-scrollbar-thumb{background:#DDE2EA;border-radius:8px;}
.panel-empty{padding:56px 22px;text-align:center;color:var(--ink3);}
.panel-empty p{margin:5px 0;font-size:13.5px;color:var(--ink2);}
.panel-empty b{color:var(--accent-d);}
.panel-body{padding:0;}

.p-head{
  padding:16px 18px 14px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#FFFDFB,#fff);position:sticky;top:0;z-index:5;
}
.p-word{font-size:24px;font-weight:800;letter-spacing:-.3px;line-height:1.2;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.p-phon{font:13px/1.5 var(--mono);color:var(--ink2);margin-top:7px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;}
.spk{
  border:1px solid var(--line);background:#fff;border-radius:7px;padding:3px 9px;cursor:pointer;
  font-size:12px;color:var(--ink2);transition:.15s;
}
.spk:hover{background:var(--accent-s);border-color:var(--accent-s2);color:var(--accent-d);}
.p-actions{display:flex;gap:7px;margin-top:12px;flex-wrap:wrap;}
.p-actions .btn{height:33px;font-size:12.5px;padding:0 13px;}
.p-actions .btn.on{background:var(--accent);border-color:var(--accent);color:#fff;}

.p-sec{padding:14px 18px;border-bottom:1px solid var(--line2);}
.p-sec:last-child{border-bottom:0;}
.p-sec>h4{
  margin:0 0 9px;font-size:11.5px;font-weight:800;letter-spacing:.7px;
  color:var(--ink3);text-transform:uppercase;display:flex;align-items:center;gap:7px;
}
.p-sec>h4 .pill{font-size:10.5px;background:#F2F4F8;color:var(--ink2);padding:1px 7px;border-radius:20px;letter-spacing:0;}
.defs{display:flex;flex-direction:column;gap:6px;}
.def{font-size:14px;line-height:1.55;color:var(--ink);}
.def .pos{color:var(--accent-d);font-weight:700;font-size:12.5px;margin-right:5px;}
.exam-tags{display:flex;gap:5px;flex-wrap:wrap;margin-top:2px;}
.exam{font-size:11px;background:var(--blue-s);color:#1D4ED8;border-radius:5px;padding:2px 7px;font-weight:700;}
.forms{display:flex;flex-wrap:wrap;gap:7px;}
.form-i{font-size:12.5px;background:#F7F9FC;border:1px solid var(--line2);border-radius:6px;padding:3px 8px;}
.form-i b{color:var(--ink3);font-weight:600;margin-right:4px;font-size:11px;}
.ex-list{display:flex;flex-direction:column;gap:10px;}
.ex{font-size:13.5px;line-height:1.55;}
.ex .en{color:var(--ink);}
.ex .zh{color:var(--ink2);font-size:12.5px;margin-top:2px;}
.ex .src{font-size:10.5px;color:var(--ink3);margin-top:2px;}
.synos{display:flex;flex-wrap:wrap;gap:6px;}
.syno{font-size:12.5px;background:var(--green-s);color:#0F7A46;border-radius:20px;padding:3px 10px;font-weight:600;cursor:pointer;border:0;}
.syno:hover{background:#D6F0E1;}
.ai-note{font-size:13px;line-height:1.7;color:var(--ink2);white-space:pre-wrap;}
.ai-note b{color:var(--ink);}
.occ{display:flex;flex-direction:column;gap:7px;}
.occ-i{font-size:12.8px;line-height:1.5;padding:8px 10px;background:#FAFBFD;border:1px solid var(--line2);border-radius:8px;cursor:pointer;transition:.15s;}
.occ-i:hover{border-color:var(--accent-s2);background:var(--accent-s);}
.occ-i .en em{background:var(--accent-s2);font-style:normal;font-weight:700;border-radius:3px;padding:0 2px;}
.occ-i .zh{color:var(--ink2);font-size:12px;margin-top:3px;}

/* 拆解面板 */
.main-box{display:flex;flex-direction:column;gap:8px;}
.main-row{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;}
.main-row .k{
  flex:0 0 62px;font-size:11.5px;font-weight:800;color:#fff;border-radius:6px;
  padding:3px 0;text-align:center;letter-spacing:.3px;
}
.k-sub{background:#2563EB;}.k-verb{background:#E8500F;}.k-obj{background:#159A5A;}
.k-adv{background:#8B5CF6;}.k-none{background:#C9CFDB;}
.main-row .v{flex:1;line-height:1.55;color:var(--ink);word-break:break-word;}
.main-row .v.muted{color:var(--ink3);}
.sent-en{font-size:16px;font-weight:600;line-height:1.62;color:var(--ink);}
.sent-en .w{cursor:pointer;border-radius:3px;padding:0 1px;}
.sent-en .w:hover{background:var(--accent-s2);}
.sent-zh{font-size:13.5px;color:var(--ink2);margin-top:6px;line-height:1.6;}
.clause-i{font-size:13px;padding:8px 11px;background:#F7F5FF;border-left:3px solid #8B5CF6;border-radius:0 8px 8px 0;margin-bottom:7px;}
.clause-i .t{font-size:11px;font-weight:800;color:#6D28D9;letter-spacing:.4px;}
.clause-i .x{margin-top:3px;color:var(--ink);}
.chunk-i{font-size:13px;padding:7px 11px;background:var(--green-s);border-left:3px solid var(--green);border-radius:0 8px 8px 0;margin-bottom:6px;color:#0B5E36;font-weight:600;}
.tok-table{display:flex;flex-direction:column;gap:1px;}
.tok-row{display:grid;grid-template-columns:1fr 60px 74px;gap:8px;padding:6px 8px;border-radius:7px;font-size:12.8px;align-items:center;cursor:pointer;}
.tok-row:hover{background:#F6F8FB;}
.tok-row:nth-child(odd){background:#FAFBFD;}
.tok-row:hover{background:var(--accent-s);}
.tok-w{font-weight:700;color:var(--ink);}
.tok-p{font-size:11px;color:var(--blue);background:var(--blue-s);border-radius:5px;padding:1px 6px;text-align:center;font-weight:700;}
.tok-d{font-size:11px;color:var(--ink3);text-align:right;}

.sec-head{display:flex;align-items:center;gap:8px;margin:0 0 9px;}
.sec-head .sp{margin-left:auto;font-size:11.5px;color:var(--ink3);}

.loading{display:flex;align-items:center;gap:9px;padding:22px;color:var(--ink3);font-size:13px;justify-content:center;}
.spin{
  width:15px;height:15px;border:2px solid var(--line);border-top-color:var(--accent);
  border-radius:50%;animation:sp .7s linear infinite;
}
@keyframes sp{to{transform:rotate(360deg);}}

/* ---------------- 生词本 ---------------- */
.page-head{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:18px;}
.page-head h2{margin:0;font-size:22px;letter-spacing:-.3px;}
.page-head .sub{margin:4px 0 0;font-size:13px;color:var(--ink3);}
.page-actions{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.sel{
  height:34px;border:1px solid var(--line);border-radius:9px;background:#fff;padding:0 10px;
  font-size:13px;cursor:pointer;color:var(--ink2);
}
.sel.wide{width:100%;}
.wordgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:13px;}
.wcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;
  box-shadow:var(--shadow);transition:.15s;display:flex;flex-direction:column;
}
.wcard:hover{border-color:#D3D9E4;transform:translateY(-1px);}
.wc-top{display:flex;align-items:baseline;gap:9px;flex-wrap:wrap;}
.wc-word{font-size:19px;font-weight:800;letter-spacing:-.2px;}
.wc-phon{font:11.5px/1 var(--mono);color:var(--ink3);}
.wc-lvl{margin-left:auto;font-size:10.5px;font-weight:800;padding:2px 8px;border-radius:20px;}
.lvl0{background:#FEF3F3;color:#C2410C;}
.lvl1{background:#FFF8E8;color:#A16207;}
.lvl2{background:var(--blue-s);color:#1D4ED8;}
.lvl3{background:var(--green-s);color:#0F7A46;}
.wc-def{font-size:13px;color:var(--ink2);margin-top:8px;line-height:1.55;}
.wc-ctx{margin-top:10px;padding:9px 11px;background:#FAFBFD;border:1px solid var(--line2);border-radius:9px;font-size:12.3px;line-height:1.5;cursor:pointer;transition:.15s;}
.wc-ctx:hover{border-color:var(--accent-s2);background:var(--accent-s);}
.wc-ctx .en{color:var(--ink);}
.wc-ctx .en em{background:var(--accent-s2);font-style:normal;font-weight:700;border-radius:3px;}
.wc-ctx .zh{color:var(--ink2);font-size:11.8px;margin-top:3px;}
.wc-foot{display:flex;align-items:center;gap:8px;margin-top:11px;padding-top:10px;border-top:1px solid var(--line2);font-size:11.5px;color:var(--ink3);}
.wc-foot .btn{margin-left:auto;}

/* ---------------- 复习 ---------------- */
.rev-wrap{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:16px;align-items:start;}
.rev-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);min-height:420px;display:flex;flex-direction:column;
}
.rev-empty{margin:auto;text-align:center;padding:50px 20px;color:var(--ink3);}
.rev-empty p{margin:5px 0;font-size:15px;color:var(--ink2);font-weight:600;}
.rev-inner{padding:20px 24px 24px;display:flex;flex-direction:column;flex:1;}
.rev-progress{height:5px;background:#EDF0F5;border-radius:4px;overflow:hidden;margin-bottom:14px;}
.rp-fill{height:100%;width:0;background:linear-gradient(90deg,#FF9A5B,var(--accent));transition:width .3s;}
.rev-top{display:flex;justify-content:space-between;font-size:12px;color:var(--ink3);margin-bottom:26px;}
.rev-front{font-size:40px;font-weight:800;text-align:center;letter-spacing:-.6px;line-height:1.3;word-break:break-word;}
.rev-hint{text-align:center;font-size:12.5px;color:var(--ink3);margin-top:9px;min-height:19px;}
#btnReveal{align-self:center;margin-top:26px;}
.rev-back{margin-top:8px;}
.rev-defs{text-align:center;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;}
.rev-phon{text-align:center;font:13px/1.6 var(--mono);color:var(--ink2);margin-top:8px;display:flex;gap:10px;justify-content:center;align-items:center;flex-wrap:wrap;}
.rev-ctx{margin-top:16px;padding:12px 14px;background:#FAFBFD;border:1px solid var(--line2);border-radius:10px;font-size:13px;line-height:1.55;}
.rev-ctx .en{color:var(--ink);}
.rev-ctx .en em{background:var(--accent-s2);font-style:normal;font-weight:700;border-radius:3px;}
.rev-ctx .zh{color:var(--ink2);font-size:12.3px;margin-top:4px;}
.rev-grade{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:22px;}
.grade{
  border:1px solid var(--line);background:#fff;border-radius:11px;padding:11px 6px;cursor:pointer;
  display:flex;flex-direction:column;gap:3px;align-items:center;font-weight:700;font-size:13.5px;transition:.15s;
}
.grade small{font-size:10.5px;color:var(--ink3);font-weight:600;}
.grade:hover{transform:translateY(-1px);}
.g0:hover{border-color:#F6A9A9;background:#FEF5F5;color:#B91C1C;}
.g1:hover{border-color:#F5D08A;background:#FFFBF0;color:#A16207;}
.g2:hover{border-color:#A8C7F5;background:#F5F9FF;color:#1D4ED8;}
.g3:hover{border-color:#9ADCB8;background:#F2FBF6;color:#0F7A46;}
.rev-side{padding:17px 19px;position:sticky;top:76px;}
.rev-side>b{font-size:12px;color:var(--ink3);letter-spacing:.5px;text-transform:uppercase;}
.kv{display:flex;justify-content:space-between;align-items:center;padding:9px 0;font-size:13.5px;color:var(--ink2);border-bottom:1px solid var(--line2);}
.kv b{font-size:16px;color:var(--ink);}
.tiny-note{font-size:12px;color:var(--ink3);line-height:1.6;margin:8px 0 0;}

/* ---------------- 数据 ---------------- */
.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:13px;margin-bottom:16px;}
.scard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);}
.scard .n{font-size:27px;font-weight:800;letter-spacing:-.6px;line-height:1.15;}
.scard .l{font-size:12.5px;color:var(--ink3);margin-top:4px;}
.scard.hi .n{color:var(--accent);}
.chart-card{margin-bottom:14px;padding:16px 18px;}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.card-head b{font-size:14px;}
.chart-wrap{width:100%;}
.video-list{display:flex;flex-direction:column;gap:9px;}
.vrow{display:flex;align-items:center;gap:12px;padding:9px;border:1px solid var(--line2);border-radius:10px;cursor:pointer;transition:.15s;}
.vrow:hover{border-color:var(--accent-s2);background:var(--accent-s);}
.vrow img{width:74px;aspect-ratio:16/9;object-fit:cover;border-radius:7px;flex-shrink:0;background:#EDF0F5;}
.vrow .vt{font-size:13.5px;font-weight:700;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.vrow .vm{font-size:11.5px;color:var(--ink3);margin-top:3px;}
.vrow .vs{margin-left:auto;text-align:right;font-size:11.5px;color:var(--ink3);flex-shrink:0;}

/* ---------------- 弹窗 ---------------- */
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px;}
.modal-mask{position:absolute;inset:0;background:rgba(20,26,40,.42);backdrop-filter:blur(3px);}
.modal-box{
  position:relative;background:#fff;border-radius:16px;width:100%;max-width:520px;
  max-height:88vh;overflow-y:auto;box-shadow:0 24px 60px -12px rgba(20,26,40,.35);
}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;padding:17px 20px;
  border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;border-radius:16px 16px 0 0;z-index:2;
}
.modal-head b{font-size:16px;}
.modal-body{padding:19px 20px 24px;}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:13px;}
.field>span{font-size:12.5px;font-weight:700;color:var(--ink2);}
.field input[type=text],.field input[type=password]{
  height:40px;padding:0 12px;border:1px solid var(--line);border-radius:9px;background:#FAFBFD;outline:none;
}
.field input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--accent-s);}
.field-row{display:flex;align-items:center;gap:11px;margin-bottom:8px;}
.field-head{display:flex;align-items:center;gap:9px;margin-bottom:4px;}
.field-head b{font-size:14px;}
.pill{font-size:10.5px;background:var(--green-s);color:#0F7A46;padding:2px 8px;border-radius:20px;font-weight:700;}
.probe{font-size:12.5px;color:var(--ink3);}
.probe.ok{color:var(--green);font-weight:600;}
.probe.bad{color:#DC2626;font-weight:600;}

/* 使用说明 */
.help-step{display:flex;gap:13px;margin-bottom:17px;}
.hs-n{
  flex:0 0 26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:13px;margin-top:1px;
}
.help-step b{font-size:14.5px;}
.help-step p{margin:5px 0 0;font-size:13.2px;line-height:1.65;color:var(--ink2);}
.help-step p b{font-size:13.2px;color:var(--accent-d);}
.mini-h{font-size:13px;color:var(--ink);}
.help-tips{margin:8px 0 0;padding-left:19px;font-size:13px;line-height:1.8;color:var(--ink2);}
.help-tips b{color:var(--ink);}
.bm-row{display:flex;align-items:center;gap:9px;margin:9px 0 0;flex-wrap:wrap;}
.bm-pill{display:inline-block;padding:8px 16px;border-radius:999px;background:var(--accent);color:#fff;
  font-weight:600;font-size:13px;cursor:grab;user-select:none;text-decoration:none;white-space:nowrap;}
.bm-pill:hover{background:var(--accent-d);color:#fff;}
.bm-pill:active{cursor:grabbing;}
.bm-hint{font-size:12px;color:var(--ink3);}

/* ---------------- Toast ---------------- */
.toast{
  position:fixed;left:50%;bottom:38px;transform:translateX(-50%);z-index:200;
  background:#1E2330;color:#fff;padding:11px 20px;border-radius:11px;font-size:13.5px;font-weight:600;
  box-shadow:0 12px 34px -8px rgba(0,0,0,.4);animation:tin .22s ease;
}
@keyframes tin{from{opacity:0;transform:translate(-50%,10px);}to{opacity:1;transform:translate(-50%,0);}}
.toast.bad{background:#B91C1C;}

/* ---------------- 响应式 ---------------- */
@media (max-width:1560px){
  .read-grid{grid-template-columns:300px minmax(0,1fr) 360px;}
}
@media (max-width:1320px){
  .read-grid{grid-template-columns:minmax(0,1fr) 370px;}
  .col-left{grid-column:1/-1;position:static;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:14px;align-items:start;}
  .col-left .tip-card{display:none;}
}
@media (max-width:980px){
  .read-grid{grid-template-columns:minmax(0,1fr);}
  .col-right{position:static;max-height:none;grid-column:1/-1;}
  .col-left{grid-template-columns:minmax(0,1fr);}
  .rev-wrap{grid-template-columns:minmax(0,1fr);}
  .topbar{flex-wrap:wrap;height:auto;padding:10px 16px;gap:10px;}
  .top-right{margin-left:0;width:100%;}
  .view{padding:14px 16px 50px;}
}

/* ---------------- 句子模式切换 ---------------- */
.btn.seg{display:inline-flex;align-items:center;gap:6px;padding:0 12px;}
.btn.seg b{color:var(--accent);font-weight:700;}
.btn.seg:not(.on) b{color:var(--ink3);}

/* ---------------- 二维码 ---------------- */
.qr-box{
  margin-top:10px;padding:12px;background:#FAFBFD;border:1px solid var(--line);
  border-radius:var(--radius-s);display:flex;align-items:center;justify-content:center;
  min-height:172px;
}
.qr-box img{width:168px;height:168px;display:block;}
.qr-ph{font-size:13px;color:var(--ink3);}
.qr-box .qr-url{font:12px/1.5 var(--mono);color:var(--ink2);word-break:break-all;text-align:center;}

/* ---------------- 手机端 ---------------- */
.mobile-tabs{display:none;}
.sheet-x{display:none;}

@media (max-width:860px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}

  /* 顶栏精简 */
  .topbar{height:auto;padding:9px 13px;gap:8px;position:sticky;top:0;z-index:70;
    background:rgba(255,255,255,.94);backdrop-filter:blur(10px);}
  .brand .logo{width:30px;height:30px;font-size:12px;border-radius:8px;}
  .brand-txt b{font-size:14.5px;}
  #brandSub{display:none;}
  .tabs{display:none;}
  .top-right{margin-left:auto;width:auto;}
  .srv-txt{display:none;}
  .icon-btn{width:32px;height:32px;font-size:15px;}

  .view{padding:12px 12px 74px;max-width:100%;}

  /* 加载栏 */
  .loadbar{padding:10px;gap:8px;}
  #urlInput{min-width:0;height:40px;flex:1 1 100%;}
  .loadbar>.btn{flex:1 1 0;justify-content:center;padding:0 10px;}
  .demos{font-size:12px;gap:8px;flex-wrap:wrap;}

  /* 精读页单列 */
  .read-grid{display:block;}
  .col-left{display:block;position:static;margin-bottom:12px;}
  .player-card{padding:8px;}
  .now-line{padding:10px 12px;}
  .now-en{font-size:16px;}
  .player-ctrl{gap:7px;padding:8px;flex-wrap:wrap;}
  .cb{padding:9px 12px;font-size:13px;}
  .info-card,.tip-card{display:none;}

  /* 字幕流 */
  .mid-head{padding:0 2px;gap:8px;flex-wrap:wrap;}
  .mid-filter{gap:6px;overflow-x:auto;width:100%;padding-bottom:2px;}
  .chip{padding:6px 11px;font-size:12.5px;white-space:nowrap;}
  .mid-actions{gap:6px;width:100%;flex-wrap:wrap;}
  .mid-actions .search{flex:1 1 100%;width:auto;}
  .line{padding:11px 12px;}
  .line-en{font-size:16.5px;line-height:1.62;}
  .line-zh{font-size:14px;}
  .line-tools{opacity:1;}                 /* 手机没有 hover，工具常显 */
  .line-no{font-size:11px;}

  /* 右侧面板 → 底部抽屉 */
  .col-right{
    position:fixed;left:0;right:0;bottom:0;top:auto;width:100%;
    max-height:72vh;overflow-y:auto;-webkit-overflow-scrolling:touch;
    background:#fff;border:1px solid var(--line);border-bottom:0;
    border-radius:18px 18px 0 0;
    box-shadow:0 -10px 34px -8px rgba(20,28,50,.28);
    transform:translateY(102%);
    transition:transform .26s cubic-bezier(.32,.72,0,1);
    z-index:80;padding:14px 14px calc(22px + env(safe-area-inset-bottom));
    overscroll-behavior:contain;
  }
  .col-right::before{
    content:'';display:block;width:44px;height:5px;border-radius:3px;
    background:rgba(140,150,170,.45);margin:0 auto 12px;
  }
  .col-right.open{transform:translateY(0);}
  .col-right .panel-empty{display:none;}
  .sheet-x{
    display:flex;align-items:center;justify-content:center;
    position:absolute;right:12px;top:12px;width:30px;height:30px;
    border:1px solid var(--line);background:#fff;border-radius:50%;
    color:var(--ink3);font-size:14px;cursor:pointer;
  }

  /* 生词 / 复习 / 数据 */
  .page-head{display:block;}
  .page-head h2{font-size:19px;}
  .page-actions{margin-top:10px;flex-wrap:wrap;gap:8px;}
  .page-actions .search{flex:1 1 100%;width:auto;}
  .wordgrid{grid-template-columns:minmax(0,1fr);}
  .rev-wrap{grid-template-columns:minmax(0,1fr);}
  .rev-card{padding:18px 14px;min-height:300px;}
  .rev-front{font-size:26px;}
  .rev-grade{grid-template-columns:1fr 1fr;}
  .stat-cards{grid-template-columns:1fr 1fr;gap:10px;}
  .chart-card{padding:12px;}
  .modal-box{width:94vw;max-width:430px;max-height:88vh;}

  /* 底部导航 */
  .mobile-tabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:rgba(255,255,255,.96);backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
    padding:5px 0 calc(5px + env(safe-area-inset-bottom));
  }
  .mt{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;
    background:none;border:0;padding:4px 0;cursor:pointer;position:relative;
    color:var(--ink3);font-size:11px;
  }
  .mt i{font-size:19px;font-style:normal;line-height:1.15;}
  .mt.on{color:var(--accent);}
  .mt .badge{position:absolute;top:0;right:calc(50% - 24px);font-size:10px;}
}


/* ---------------- 跨设备同步 ---------------- */
.sync-chip{
  display:inline-flex;align-items:center;gap:5px;
  height:34px;padding:0 11px;border-radius:9px;cursor:pointer;
  border:1px solid var(--line);background:#fff;color:var(--ink3);
  font-size:12px;font-family:inherit;white-space:nowrap;transition:.15s;
}
.sync-chip i{font-style:normal;font-size:13px;line-height:1;}
.sync-chip:hover{background:#F6F8FB;border-color:#D8DDE7;color:var(--ink2);}
.sync-chip.ok{color:var(--green);border-color:#CFEBDD;background:var(--green-s);}
.sync-chip.busy{color:var(--amber);border-color:#F1E3C6;background:#FFFBF3;}
.sync-chip.err{color:#C0392B;border-color:#F5D9D4;background:#FFF7F6;}

/* ---------------- 视频收藏 ---------------- */
.loadbar-hint{font-size:12px;color:var(--ink3);}
.videogrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:14px;}
.vcard{
  display:flex;gap:12px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:11px;box-shadow:var(--shadow);transition:.15s;
}
.vcard:hover{border-color:#D3D9E4;transform:translateY(-1px);}
.vthumb{position:relative;width:138px;flex-shrink:0;aspect-ratio:16/9;border-radius:9px;overflow:hidden;background:#EDF0F5;}
.vthumb img{width:100%;height:100%;object-fit:cover;display:block;}
.vdur{
  position:absolute;right:5px;bottom:5px;background:rgba(12,16,26,.78);color:#fff;
  font-size:11px;padding:1px 5px;border-radius:5px;font-family:var(--mono);
}
.vstar{
  position:absolute;left:5px;top:5px;width:24px;height:24px;border:0;border-radius:7px;
  background:rgba(255,255,255,.93);color:var(--accent);font-size:13px;line-height:1;
  cursor:pointer;display:grid;place-items:center;
}
.vstar:hover{background:#fff;}
.vbody{flex:1;min-width:0;display:flex;flex-direction:column;}
.vtitle{font-size:14px;font-weight:600;color:var(--ink);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.vmeta{font-size:12px;color:var(--ink3);margin-top:2px;}
.vbar{height:4px;border-radius:3px;background:#EDF0F5;margin:8px 0 7px;overflow:hidden;}
.vbar i{display:block;height:100%;background:var(--accent);border-radius:3px;}
.vfoot{display:flex;align-items:center;justify-content:space-between;gap:6px 8px;margin-top:auto;flex-wrap:wrap;}
.vfoot span{font-size:11.5px;color:var(--ink3);}
.vfoot .btn{margin-left:auto;}
.vsaved{font-size:11px;color:var(--ink3);margin-top:6px;}

/* ---------------- 视频信息卡里的收藏按钮 ---------------- */
.info-act{display:flex;align-items:center;gap:9px;margin-top:9px;flex-wrap:wrap;}
.info-act-hint{font-size:11.5px;color:var(--ink3);}

@media (max-width:860px){
  .sync-chip{padding:0 9px;}
  .sync-chip span{display:none;}
  .videogrid{grid-template-columns:1fr;}
  .vthumb{width:116px;}
  .info-act-hint{display:none;}
}