/* ============================================================
   芯火 · 教学评一体化平台
   与「化生学科站」同一设计规范 · 无外部依赖 · 微信轻量化
   ============================================================ */

:root{
  --navy:#0F4C81; --navy-deep:#0B3A63; --navy-soft:#EAF1F8;
  --chem:#0E7C7B; --chem-soft:#E4F3F2; --chem-deep:#0A5F5E;
  --accent:#E8A33D; --accent-soft:#FDF3E3; --ember:#D97706;
  --ink:#1F2937; --sub:#5B6B7C; --mute:#8A97A6;
  --bg:#F6F8FA; --paper:#FFFFFF; --line:#E3E8EF; --line-2:#EFF2F6;
  --danger:#C0392B; --danger-soft:#FBEAE8;
  --ok:#1E8449; --ok-soft:#E8F5EC;
  --shadow:0 1px 2px rgba(16,37,58,.05),0 10px 30px rgba(16,37,58,.07);
  --shadow-sm:0 1px 2px rgba(16,37,58,.06);
  --r:14px; --r-sm:9px; --r-xs:6px;
  --max:1200px;
  --nav-h:60px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.62; font-size:14.5px;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:none;-webkit-tap-highlight-color:transparent}
table{border-collapse:collapse;width:100%}
::selection{background:#CFE3F4}
h1,h2,h3,h4{line-height:1.35;font-weight:800;letter-spacing:-.01em}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.mono{font-family:"SF Mono",Consolas,"Courier New",monospace;font-variant-numeric:tabular-nums}

/* ---------- 布局 ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.page{padding-top:24px;padding-bottom:96px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.row{display:flex;gap:10px;align-items:center}
.row.wrap-row{flex-wrap:wrap}
.col{display:flex;flex-direction:column;gap:10px}
.spacer{flex:1}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.mb8{margin-bottom:8px}.mb12{margin-bottom:12px}.mb16{margin-bottom:16px}
.tc{text-align:center}.tr{text-align:right}
.hide{display:none!important}
.sub{color:var(--sub)}.mute{color:var(--mute)}
.small{font-size:12.5px}.tiny{font-size:11.5px}
.strong{font-weight:700}

/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:saturate(180%) blur(8px)}
.nav{max-width:var(--max);margin:0 auto;padding:0 20px;height:var(--nav-h);display:flex;align-items:center;gap:4px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:16px;color:var(--navy);margin-right:12px;letter-spacing:.2px}
.brand .logo{width:28px;height:28px;flex:0 0 auto}
.brand small{display:block;font-size:10px;font-weight:600;color:var(--mute);letter-spacing:.16em;line-height:1.15}
.nav-links{display:flex;gap:2px;flex-wrap:wrap;margin-right:auto}
.nav-links a{padding:7px 12px;border-radius:8px;font-size:13.5px;color:var(--sub);font-weight:500;white-space:nowrap;transition:.15s}
.nav-links a:hover{background:#F2F6FA;color:var(--navy)}
.nav-links a.on{color:var(--navy);background:var(--navy-soft);font-weight:700}
.nav-role{display:flex;gap:6px;align-items:center}
.role-pill{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;font-size:12px;
  background:var(--chem-soft);color:var(--chem-deep);font-weight:700;border:1px solid #CFE7E5}
.role-pill.teacher{background:var(--navy-soft);color:var(--navy);border-color:#D3E3F2}

/* ---------- 卡片 ---------- */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-sm);padding:18px}
.card.pad0{padding:0}
.card-h{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px}
.card-h h3{font-size:15px;letter-spacing:0}
.card-h .tag{margin-left:auto;flex:0 0 auto}
.card-sub{font-size:12px;color:var(--mute);margin-top:2px}
.divider{height:1px;background:var(--line-2);margin:12px 0}
.hoverable{transition:.18s}
.hoverable:hover{box-shadow:var(--shadow);transform:translateY(-1px);border-color:#D7E0EA}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 15px;border-radius:9px;
  font-size:13.5px;font-weight:700;border:1px solid var(--line);background:#fff;color:var(--ink);
  transition:.15s;white-space:nowrap;min-height:38px}
.btn:hover{border-color:#C9D4E0;background:#FAFCFE}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.primary:hover{background:var(--navy-deep)}
.btn.teal{background:var(--chem);border-color:var(--chem);color:#fff}
.btn.teal:hover{background:var(--chem-deep)}
.btn.amber{background:var(--accent);border-color:var(--accent);color:#4A2E05}
.btn.ghost{background:transparent;border-color:transparent;color:var(--sub);padding:6px 8px;min-height:0}
.btn.ghost:hover{background:#F1F5F9;color:var(--navy)}
.btn.sm{padding:5px 10px;font-size:12.5px;min-height:30px;border-radius:7px}
.btn.block{width:100%}
.btn[disabled]{opacity:.5;pointer-events:none}

/* ---------- 标签/徽标 ---------- */
.tag{display:inline-flex;align-items:center;gap:4px;padding:2px 7px;border-radius:5px;font-size:11.5px;
  font-weight:700;background:var(--line-2);color:var(--sub);white-space:nowrap;line-height:1.7}
.tag.navy{background:var(--navy-soft);color:var(--navy)}
.tag.teal{background:var(--chem-soft);color:var(--chem-deep)}
.tag.amber{background:var(--accent-soft);color:#8A5A08}
.tag.red{background:var(--danger-soft);color:var(--danger)}
.tag.green{background:var(--ok-soft);color:var(--ok)}
.tag.line{background:transparent;border:1px solid var(--line);color:var(--sub)}
.dot{width:6px;height:6px;border-radius:50%;display:inline-block;flex:0 0 auto}
.dot.teal{background:var(--chem)}.dot.amber{background:var(--accent)}.dot.red{background:var(--danger)}
.dot.navy{background:var(--navy)}.dot.gray{background:#C3CDD9}

/* ---------- 统计 ---------- */
.stat{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.stat .k{font-size:11.5px;color:var(--mute);font-weight:600;letter-spacing:.02em}
.stat .v{font-size:26px;font-weight:800;line-height:1.2;margin-top:2px;letter-spacing:-.02em}
.stat .v em{font-size:12px;font-weight:600;color:var(--mute);font-style:normal;margin-left:3px}
.stat .d{font-size:11.5px;color:var(--sub);margin-top:2px}

/* ---------- 进度条 ---------- */
.bar{height:6px;border-radius:999px;background:var(--line-2);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:999px;background:var(--chem)}
.bar.navy>i{background:var(--navy)}
.bar.amber>i{background:var(--accent)}
.bar.red>i{background:var(--danger)}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:11.5px;color:var(--sub)}
.legend span{display:inline-flex;align-items:center;gap:5px}

/* ---------- 20周画布网格 ---------- */
.wgrid{display:grid;grid-template-columns:26px repeat(5,1fr);gap:4px;align-items:center}
.wgrid .wh{font-size:10.5px;color:var(--mute);text-align:center;font-weight:700;padding-bottom:2px}
.wgrid .wn{font-size:10px;color:var(--mute);text-align:right;padding-right:3px;font-weight:600}
.cell{aspect-ratio:1/1;border-radius:4px;background:#F1F4F8;border:1px solid transparent;position:relative;
  cursor:pointer;transition:.12s;min-height:14px}
.cell:hover{transform:scale(1.14);z-index:3;box-shadow:0 2px 8px rgba(16,37,58,.18)}
.cell.done{background:#BBDDD9;border-color:#A9D3CE}
.cell.reviewed{background:#8FC6C1}
.cell.hi{background:#E8A33D;border-color:#D18E28}
.cell.today{background:#fff;border:2px solid var(--ember);box-shadow:0 0 0 3px rgba(232,163,61,.22)}
.cell.up{background:#F4F7FA;border-color:#E8EDF3}
.cell.exam{background:#E7E2F3;border-color:#D6CEEA}
.cell i{position:absolute;right:2px;top:2px;width:4px;height:4px;border-radius:50%;background:var(--danger)}
.cell i.h{background:#8A5A08}
.cell.big{min-height:auto;aspect-ratio:auto;height:100%}
.cellwrap{position:relative}
.cellwrap .tip{position:absolute;z-index:9;left:50%;bottom:calc(100% + 8px);transform:translateX(-50%);
  background:#16232F;color:#fff;font-size:11px;padding:6px 9px;border-radius:6px;white-space:nowrap;
  pointer-events:none;opacity:0;transition:.12s}
.cellwrap:hover .tip{opacity:1}

/* ---------- 课堂 40 分钟轨迹条 ---------- */
.segbar{position:relative;height:34px;border-radius:8px;overflow:hidden;display:flex;background:#EEF2F6;cursor:pointer}
.segbar .seg{height:100%;position:relative;border-right:1px solid rgba(255,255,255,.55);transition:.15s}
.segbar .seg:last-child{border-right:none}
.segbar .seg.导入{background:#DCE7F2}
.segbar .seg.讲解{background:#9CC9C5}
.segbar .seg.例题{background:#5FA9A4}
.segbar .seg.互动{background:#B7D3E8}
.segbar .seg.检测{background:#E8A33D}
.segbar .seg.小结{background:#CBD5E1}
.segbar .seg .lb{position:absolute;left:5px;top:50%;transform:translateY(-50%);font-size:10px;
  color:#123;font-weight:700;opacity:.72;white-space:nowrap;overflow:hidden}
.segbar .playhead{position:absolute;top:0;bottom:0;width:2px;background:#C0392B;z-index:4;pointer-events:none}
.segbar .playhead::before{content:"";position:absolute;top:-1px;left:-4px;width:10px;height:10px;
  background:#C0392B;border-radius:50%;box-shadow:0 0 0 2px #fff}
.segbar .qmark{position:absolute;bottom:1px;width:0;height:0;border-left:3.5px solid transparent;
  border-right:3.5px solid transparent;border-bottom:6px solid #7A3E00;z-index:3;transform:translateX(-3.5px)}
.ticks{display:flex;justify-content:space-between;font-size:10.5px;color:var(--mute);margin-top:3px}
.timeline-legend{display:flex;gap:12px;flex-wrap:wrap;font-size:11px;color:var(--sub);margin-top:8px}

/* ---------- 波形 ---------- */
.wave{display:flex;align-items:center;gap:2px;height:44px;overflow:hidden}
.wave b{display:block;width:2px;border-radius:1px;background:#D7E3EA;flex:0 0 auto;transition:background .1s}
.wave b.on{background:var(--chem)}
.wave b.hl{background:var(--accent)}

/* ---------- 转写列表 ---------- */
.trans{max-height:420px;overflow:auto;padding-right:4px}
.trans .row-t{display:grid;grid-template-columns:52px 1fr;gap:12px;padding:11px 10px;border-radius:8px;
  cursor:pointer;border-left:3px solid transparent;transition:.14s}
.trans .row-t:hover{background:#F8FAFC}
.trans .row-t.on{background:var(--accent-soft);border-left-color:var(--accent)}
.trans .row-t.past{opacity:.72}
.trans .t{font-size:11.5px;color:var(--mute);font-weight:700;padding-top:2px}
.trans .tx{font-size:13.5px;line-height:1.75;color:#2B3A48}
.trans .tx .kp{font-weight:800;color:var(--chem-deep)}
.trans .meta{display:flex;gap:6px;margin-top:5px;flex-wrap:wrap}

/* ---------- 播放控制 ---------- */
.player{display:flex;align-items:center;gap:12px;padding:10px 12px;background:#FBFCFE;
  border:1px solid var(--line);border-radius:11px}
.play-btn{width:42px;height:42px;border-radius:50%;background:var(--navy);color:#fff;display:flex;
  align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 3px 10px rgba(15,76,129,.28)}
.play-btn svg{width:18px;height:18px;fill:#fff}
.time{font-size:12.5px;font-weight:700;color:var(--sub);white-space:nowrap}
.speed{display:flex;border:1px solid var(--line);border-radius:7px;overflow:hidden;background:#fff}
.speed b{padding:3px 8px;font-size:11.5px;font-weight:700;color:var(--sub);cursor:pointer;border-right:1px solid var(--line-2)}
.speed b:last-child{border-right:none}
.speed b.on{background:var(--navy-soft);color:var(--navy)}
input[type=range]{-webkit-appearance:none;appearance:none;height:4px;border-radius:999px;background:var(--line);width:100%}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;
  background:var(--navy);border:2px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.2);cursor:pointer}

/* ---------- 亮灯按钮 ---------- */
.lamp{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border-radius:999px;
  background:linear-gradient(135deg,#FFF6E6,#FDEBC8);border:1px solid #F0CE8E;color:#7A4A06;
  font-size:12.5px;font-weight:800;box-shadow:0 2px 8px rgba(232,163,61,.22);transition:.18s;min-height:36px}
.lamp:hover{transform:translateY(-1px);box-shadow:0 5px 14px rgba(232,163,61,.3)}
.lamp .bulb{width:15px;height:15px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#FFE9B8,#F0B03C);
  box-shadow:0 0 0 3px rgba(240,176,60,.18);flex:0 0 auto}
.lamp.off{background:#F6F8FA;border-color:var(--line);color:var(--mute);box-shadow:none}

/* ---------- 错题卡 ---------- */
.qcard{border:1px solid var(--line);border-radius:11px;padding:14px;background:#fff;transition:.16s}
.qcard:hover{border-color:#D3DDE8}
.qcard .qhead{display:flex;gap:8px;align-items:flex-start;margin-bottom:6px}
.qcard .qno{font-size:11px;font-weight:800;color:#fff;background:var(--sub);border-radius:4px;padding:1px 6px;flex:0 0 auto}
.qcard .stem{font-size:14px;font-weight:600;line-height:1.6}
.qcard .opts{display:grid;gap:5px;margin-top:8px}
.qcard .opt{font-size:13px;padding:6px 9px;border:1px solid var(--line-2);border-radius:7px;color:var(--sub);background:#FCFDFE}
.qcard .opt.ok{border-color:#BFE3CB;background:var(--ok-soft);color:var(--ok);font-weight:700}
.qcard .opt.bad{border-color:#EFC6C1;background:var(--danger-soft);color:var(--danger)}

/* ---------- 时间轴（学生轨迹） ---------- */
.tl{position:relative;padding-left:26px}
.tl::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(#CFE0EA,#E6EDF3)}
.tl-item{position:relative;margin-bottom:14px}
.tl-item::before{content:"";position:absolute;left:-23px;top:16px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2.5px solid #B9CDDB;box-shadow:0 0 0 3px #fff}
.tl-item.now::before{border-color:var(--ember);background:var(--accent-soft);box-shadow:0 0 0 3px #fff,0 0 0 5px rgba(232,163,61,.25)}
.tl-item.good::before{border-color:var(--chem);background:var(--chem-soft)}
.tl-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.tl-week{font-size:13px;font-weight:800;color:var(--navy)}
.tl-card{background:#fff;border:1px solid var(--line);border-radius:11px;padding:12px 13px}
.tl-chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.chip{font-size:11.5px;padding:2px 8px;border-radius:999px;background:#F3F6F9;color:var(--sub);font-weight:600}
.chip.t{background:var(--chem-soft);color:var(--chem-deep)}
.chip.a{background:var(--accent-soft);color:#8A5A08}
.chip.r{background:var(--danger-soft);color:var(--danger)}

/* ---------- 学生小卡 ---------- */
.stu{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;cursor:pointer;transition:.14s}
.stu:hover{background:#F6F9FC}
.stu.on{background:var(--navy-soft)}
.avatar{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-weight:800;color:#fff;font-size:14px;flex:0 0 auto}
.avatar.lg{width:52px;height:52px;border-radius:14px;font-size:19px}
.avatar.sm{width:26px;height:26px;border-radius:8px;font-size:11.5px}

/* ---------- 表单 ---------- */
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-size:12px;font-weight:700;color:var(--sub)}
.input,select.input,textarea.input{padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;
  font-size:13.5px;outline:none;transition:.15s;width:100%}
.input:focus{border-color:var(--navy);box-shadow:0 0 0 3px rgba(15,76,129,.1)}

/* ---------- 弹层 ---------- */
.mask{position:fixed;inset:0;background:rgba(16,32,48,.45);z-index:90;display:flex;align-items:flex-end;
  justify-content:center;opacity:0;pointer-events:none;transition:.2s}
.mask.on{opacity:1;pointer-events:auto}
.sheet{background:#fff;width:100%;max-width:620px;border-radius:16px 16px 0 0;padding:18px 20px 24px;
  max-height:88vh;overflow:auto;transform:translateY(18px);transition:.24s}
.mask.on .sheet{transform:none}
.sheet-h{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.sheet-h h3{font-size:16px}
@media(min-width:760px){
  .mask{align-items:center}
  .sheet{border-radius:16px;max-height:84vh;transform:translateY(10px) scale(.99)}
}

/* ---------- 画布 ---------- */
.board{position:relative;height:calc(100vh - var(--nav-h));overflow:hidden;background:
  radial-gradient(circle at 1px 1px,#DCE5EE 1px,transparent 0) 0 0/22px 22px,#F3F6F9;touch-action:none}
.plane{position:absolute;left:0;top:0;width:1600px;height:1100px;transform-origin:0 0;will-change:transform}
.bcard{position:absolute;background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 2px 6px rgba(16,37,58,.05),0 14px 36px rgba(16,37,58,.06);padding:15px;overflow:hidden}
.bcard .bh{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.bcard .bh h3{font-size:14px}
.bcard .bh .hint{font-size:11px;color:var(--mute);margin-left:auto}
.boardtools{position:absolute;right:16px;bottom:18px;z-index:20;display:flex;flex-direction:column;gap:6px}
.boardtools button{width:38px;height:38px;border-radius:10px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--sub);font-size:16px}
.boardtools button:hover{color:var(--navy);border-color:#C9D8E5}
.boardhint{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);z-index:20;font-size:11.5px;color:var(--mute);
  background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:999px;padding:5px 12px;white-space:nowrap}

/* ---------- 底部 tab（微信） ---------- */
.tabbar{display:none}
@media(max-width:760px){
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.98);
    border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom));backdrop-filter:blur(8px)}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:10.5px;color:var(--mute);
    font-weight:600;padding:4px 0;border-radius:8px}
  .tabbar a.on{color:var(--navy)}
  .tabbar svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8}
  .page{padding-bottom:88px}
  .nav-links{display:none}
  .nav{height:54px}
  :root{--nav-h:54px}
}

/* ---------- 首页 ---------- */
.hero{position:relative;padding:46px 0 34px;overflow:hidden}
.hero::after{content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,163,61,.13),rgba(232,163,61,0) 68%);pointer-events:none}
.hero .eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:800;letter-spacing:.1em;
  color:var(--chem-deep);background:var(--chem-soft);padding:5px 11px;border-radius:999px}
.hero h1{font-size:40px;line-height:1.2;margin:16px 0 12px;letter-spacing:-.025em}
.hero h1 span{color:var(--navy)}
.hero p.lead{font-size:15.5px;color:var(--sub);max-width:640px}
.entry{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}
.entry a{display:block;padding:20px;border-radius:16px;border:1px solid var(--line);background:#fff;
  transition:.2s;position:relative;overflow:hidden}
.entry a:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.entry a.t{border-color:#CFE3F2;background:linear-gradient(160deg,#F7FBFF,#fff 60%)}
.entry a.s{border-color:#CFE7E5;background:linear-gradient(160deg,#F5FBFA,#fff 60%)}
.entry .ic{width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.entry .ic.t{background:var(--navy-soft);color:var(--navy)}
.entry .ic.s{background:var(--chem-soft);color:var(--chem-deep)}
.entry h2{font-size:19px;margin-bottom:5px}
.entry p{font-size:12.5px;color:var(--sub);line-height:1.65}
.entry .go{position:absolute;right:18px;top:20px;color:var(--mute)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:14px}
.flow .step{padding:16px 14px;position:relative}
.flow .step:not(:last-child)::after{content:"";position:absolute;right:0;top:26px;bottom:26px;width:1px;background:var(--line)}
.flow .n{font-size:11px;font-weight:800;color:var(--accent);letter-spacing:.08em}
.flow h4{font-size:13.5px;margin:4px 0 3px}
.flow p{font-size:11.5px;color:var(--mute);line-height:1.6}
@media(max-width:760px){
  .hero{padding:28px 0 20px}
  .hero h1{font-size:27px}
  .hero p.lead{font-size:14px}
  .entry{grid-template-columns:1fr;gap:10px}
  .entry a{padding:16px}
  .flow{grid-template-columns:1fr 1fr;gap:0}
  .flow .step:nth-child(2)::after{display:none}
  .flow .step:nth-child(3),.flow .step:nth-child(4){border-top:1px solid var(--line)}
  .g3,.g4,.g2{grid-template-columns:1fr}
  .card{padding:14px}
}

/* ---------- 表格 ---------- */
.tbl{width:100%;font-size:12.5px}
.tbl th{text-align:left;font-size:11px;color:var(--mute);font-weight:700;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl td{padding:8px 10px;border-bottom:1px solid var(--line-2)}
.tbl tr:hover td{background:#FAFCFE}

/* ---------- 提示条 ---------- */
.note{display:flex;gap:9px;padding:11px 13px;border-radius:9px;background:var(--accent-soft);
  border:1px solid #F3DCB4;font-size:12px;color:#6B4A0E;line-height:1.65}
.note.info{background:var(--navy-soft);border-color:#D6E5F3;color:#204A6E}
.note.ok{background:var(--ok-soft);border-color:#CCE8D4;color:#1B5E34}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:#D3DDE7;border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:#BCCBD9}
::-webkit-scrollbar-track{background:transparent}

/* ---------- 动效 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.fadeup{animation:fadeUp .35s ease both}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ============================================================
   微信 / 移动端轻量化适配（v2 补充）
   ============================================================ */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{overscroll-behavior-y:contain;text-rendering:optimizeSpeed}
a,button,label,.cell,.cue,.titem{touch-action:manipulation}
::selection{background:#CFE3F4}

/* 微信里 backdrop-filter 在千元机上会持续掉帧，直接换成实色 */
.is-wx .topbar{backdrop-filter:none;-webkit-backdrop-filter:none;background:#fff}
.is-wx .tabbar{backdrop-filter:none;-webkit-backdrop-filter:none;background:#fff}
.is-wx .bcard,.is-wx .card{box-shadow:0 1px 2px rgba(16,37,58,.05)}

/* 真机 100vh 修正：微信地址栏收放不再抖动 */
.is-mobile .board{height:calc(var(--vh,1vh) * 100 - var(--nav-h))}
.is-mobile .page{padding-bottom:calc(92px + env(safe-area-inset-bottom))}
.is-mobile .tabbar{padding-bottom:calc(6px + env(safe-area-inset-bottom))}

/* 首屏骨架：数据还没到时先占位，避免白屏 */
.skel{background:linear-gradient(90deg,#F1F4F8 25%,#F8FAFC 37%,#F1F4F8 63%);
  background-size:400% 100%;animation:skel 1.2s ease infinite;border-radius:6px}
@keyframes skel{from{background-position:100% 0}to{background-position:0 0}}
.skel-line{height:12px;margin-bottom:8px}

/* ---------- 分段控件（宏观 / 中观 / 微观） ---------- */
.seg-ctrl{display:inline-flex;background:#F1F4F8;border-radius:9px;padding:3px;gap:2px;max-width:100%}
.seg-ctrl button{padding:5px 12px;border-radius:7px;font-size:12.5px;font-weight:700;color:var(--sub);white-space:nowrap}
.seg-ctrl button.on{background:#fff;color:var(--navy);box-shadow:var(--shadow-sm)}

/* ---------- 采集页 ---------- */
.mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.mode-card{display:flex;gap:10px;align-items:flex-start;padding:14px;border:1px solid var(--line);border-radius:12px;
  background:#fff;text-align:left;transition:.16s;position:relative}
.mode-card.on{border-color:var(--navy);box-shadow:0 0 0 3px rgba(15,76,129,.09)}
.mode-card .mi{width:34px;height:34px;border-radius:9px;background:var(--navy-soft);color:var(--navy);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;font-size:15px;font-weight:800}
.mode-card h4{font-size:13.5px;margin-bottom:2px}
.mode-card p{font-size:11.5px;color:var(--mute);line-height:1.55}
.mode-card .rec{position:absolute;right:10px;top:10px;font-size:10px;font-weight:800;color:#fff;background:var(--chem);
  border-radius:999px;padding:1px 7px}

.drop{border:1.5px dashed #CBD8E5;border-radius:12px;background:#FBFCFE;padding:22px 16px;text-align:center;transition:.16s}
.drop.hot{border-color:var(--navy);background:var(--navy-soft)}
.drop .ic{width:44px;height:44px;margin:0 auto 8px;border-radius:12px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--navy)}
.drop h4{font-size:13.5px;margin-bottom:3px}
.drop p{font-size:11.5px;color:var(--mute)}

.file-pill{display:flex;align-items:center;gap:9px;padding:9px 11px;border:1px solid var(--line);border-radius:9px;
  background:#fff;margin-top:9px;font-size:12.5px}
.file-pill .fi{width:26px;height:26px;border-radius:7px;background:var(--chem-soft);color:var(--chem-deep);
  display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;flex:0 0 auto}
.file-pill .fn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.file-pill .fx{color:var(--mute);font-size:16px;line-height:1;padding:2px 4px}

/* 任务进度 */
.job{display:grid;grid-template-columns:26px 1fr auto;gap:10px;align-items:center;padding:10px 0;
  border-bottom:1px solid var(--line-2)}
.job:last-child{border-bottom:none}
.job .jd{width:9px;height:9px;border-radius:50%;background:#CBD5E1;justify-self:center}
.job.doing .jd{background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft);animation:pulse 1.2s infinite}
.job.done .jd{background:var(--chem)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.job .jt{font-size:12.5px;font-weight:600}
.job .js{font-size:11px;color:var(--mute);margin-top:1px}

/* ---------- 沉浸录音 ---------- */
.recstage{position:relative;border-radius:14px;overflow:hidden;background:linear-gradient(160deg,#0B2A45,#123A5C 60%,#0E4A50);
  color:#EAF2F8;padding:18px;min-height:230px;display:flex;flex-direction:column;justify-content:space-between}
.recstage .rt{display:flex;align-items:center;gap:8px;font-size:12px;color:#9DB6CB}
.recstage .rdot{width:8px;height:8px;border-radius:50%;background:#E05B4A;box-shadow:0 0 0 4px rgba(224,91,74,.25);
  animation:pulse 1.1s infinite}
.recstage .big{font-size:38px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;margin:10px 0 2px}
.recstage .rwave{display:flex;align-items:flex-end;gap:2px;height:38px;margin-top:6px}
.recstage .rwave i{flex:1;background:#7FD1C9;border-radius:1px;opacity:.55;transition:height .12s}
.recstage .rmeta{font-size:11.5px;color:#8FA9BF}

.shot-fab{position:absolute;right:14px;bottom:14px;width:64px;height:64px;border-radius:50%;
  background:linear-gradient(150deg,#FFD79A,#E8A33D);color:#4A2E05;display:flex;flex-direction:column;
  align-items:center;justify-content:center;font-size:9px;font-weight:800;gap:1px;
  box-shadow:0 6px 20px rgba(0,0,0,.35),0 0 0 6px rgba(232,163,61,.16);transition:.15s;z-index:3}
.shot-fab:active{transform:scale(.93)}
.shot-fab svg{width:22px;height:22px;stroke:#4A2E05;fill:none;stroke-width:1.8}
.shot-fab .c{position:absolute;right:-4px;top:-4px;min-width:18px;height:18px;border-radius:999px;background:#C0392B;
  color:#fff;font-size:10px;display:flex;align-items:center;justify-content:center;padding:0 4px}

.shot-flash{position:absolute;inset:0;background:#fff;opacity:0;pointer-events:none;z-index:4}
.shot-flash.on{animation:flash .42s ease}
@keyframes flash{0%{opacity:.92}100%{opacity:0}}

.shots{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:10px}
.shot{position:relative;border-radius:8px;overflow:hidden;border:1px solid var(--line);background:#F4F6F4;aspect-ratio:4/3}
.shot img{width:100%;height:100%;object-fit:cover;display:block}
.shot .ts{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(0,0,0,.6));
  color:#fff;font-size:9.5px;font-weight:700;padding:8px 5px 3px;font-variant-numeric:tabular-nums}
.shot .del{position:absolute;right:3px;top:3px;width:18px;height:18px;border-radius:50%;background:rgba(0,0,0,.5);
  color:#fff;font-size:12px;line-height:18px;text-align:center}

/* ---------- 极速批改 ---------- */
.sheetgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:8px}
.sheetcard{border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff;position:relative}
.sheetcard .ph{aspect-ratio:3/4;background:#F4F6F4;overflow:hidden}
.sheetcard .ph img{width:100%;height:100%;object-fit:cover}
.sheetcard .cap{font-size:10.5px;padding:4px 6px;color:var(--sub);display:flex;gap:4px;align-items:center}
.sheetcard .cap b{color:var(--navy)}
.scanline{position:absolute;left:0;right:0;height:2px;background:var(--chem);box-shadow:0 0 8px var(--chem);
  animation:scan 1.6s ease-in-out infinite}
@keyframes scan{0%,100%{top:2%}50%{top:96%}}

.rate-row{display:grid;grid-template-columns:34px 1fr 46px;gap:8px;align-items:center;padding:5px 0}
.rate-row .qn{font-size:11px;font-weight:800;color:var(--mute);font-variant-numeric:tabular-nums}
.rate-row .bar{height:8px}
.rate-row .rv{font-size:11.5px;font-weight:800;text-align:right;font-variant-numeric:tabular-nums}

.abcd{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin-top:5px}
.abcd i{height:22px;border-radius:5px;background:#F1F4F8;position:relative;overflow:hidden}
.abcd i b{position:absolute;left:0;bottom:0;width:100%;background:#BFD9D6}

.edit-tag{display:inline-flex;align-items:center;gap:3px;font-size:10px;color:var(--ember);cursor:pointer}

/* ---------- 大屏复盘 ---------- */
.screen-body{background:#0B1622;color:#E8EFF6;min-height:calc(var(--vh,1vh) * 100)}
.screen-body .wrap{max-width:1360px}
.big-list{display:flex;flex-direction:column;gap:8px}
.big-item{display:grid;grid-template-columns:56px 1fr auto;gap:16px;align-items:center;padding:14px 18px;
  border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);
  cursor:pointer;transition:.15s}
.big-item:hover{background:rgba(255,255,255,.1)}
.big-item.on{background:rgba(232,163,61,.16);border-color:rgba(232,163,61,.5)}
.big-item .rank{font-size:26px;font-weight:800;color:#E8A33D;text-align:center;letter-spacing:-.03em}
.big-item h4{font-size:19px;font-weight:800;margin-bottom:3px}
.big-item .sub2{font-size:13px;color:#93A7BA}
.big-item .stat2{text-align:right}
.big-item .stat2 b{font-size:26px;font-weight:800;color:#F0B03C;display:block;line-height:1.1}
.big-item .stat2 span{font-size:11px;color:#93A7BA}
.screen-dark .card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.09);color:#E8EFF6}
.screen-dark .card-sub,.screen-dark .mute,.screen-dark .tiny{color:#9DB0C2}
.screen-dark h3,.screen-dark .sub{color:#E8EFF6}
.screen-dark .divider{background:rgba(255,255,255,.1)}
.screen-dark .btn{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#E8EFF6}
.screen-dark .btn.primary{background:#E8A33D;border-color:#E8A33D;color:#3A2400}

/* ---------- 板书照片浮层（播放到拍照时刻自动弹出） ---------- */
.board-pop{position:fixed;left:50%;bottom:calc(76px + env(safe-area-inset-bottom));transform:translate(-50%,16px) scale(.96);
  width:min(420px,86vw);z-index:180;background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 18px 50px rgba(16,37,58,.26);overflow:hidden;opacity:0;pointer-events:none;transition:.26s cubic-bezier(.2,1.2,.4,1)}
.board-pop.on{opacity:1;transform:translate(-50%,0) scale(1);pointer-events:auto}
.board-pop .bp-h{display:flex;align-items:center;gap:7px;padding:9px 12px;font-size:11.5px;color:var(--mute);
  border-bottom:1px solid var(--line-2);font-weight:700}
.board-pop .bp-h .x{margin-left:auto;font-size:17px;line-height:1;color:var(--mute);padding:0 3px}
.board-pop .bp-img{aspect-ratio:440/250;background:#F4F6F4}
.board-pop .bp-f{padding:8px 12px 11px;font-size:11px;color:var(--sub);display:flex;gap:8px;align-items:center}

/* 时间轴上的拍照锚点 */
.segbar .pmark{position:absolute;top:-1px;width:14px;height:14px;border-radius:4px;background:#0E7C7B;
  z-index:5;transform:translateX(-7px);display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 2px #fff;pointer-events:none}
.segbar .pmark svg{width:9px;height:9px;stroke:#fff;fill:none;stroke-width:2}

/* 原话提炼 */
.quote{border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 9px 9px 0;padding:9px 12px;margin-top:8px}
.quote .qh{font-size:10.5px;font-weight:800;color:#8A5A08;letter-spacing:.04em;margin-bottom:3px}
.quote .qt{font-size:12.5px;line-height:1.75;color:#5C3F0C}
.kw{margin-top:6px;display:flex;gap:4px;flex-wrap:wrap}
.kw span{font-size:10.5px;font-weight:700;padding:1px 6px;border-radius:4px;background:#fff;color:#8A5A08;
  border:1px solid #F0DDB8}

/* ---------- 阶梯推题 ---------- */
.ladder{display:flex;gap:0;margin:2px 0 14px}
.ladder .st{flex:1;text-align:center;position:relative;padding-top:24px;font-size:10.5px;color:var(--mute);font-weight:700}
.ladder .st::before{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);
  width:11px;height:11px;border-radius:50%;background:#fff;border:2px solid #C3CDD9;z-index:2}
.ladder .st::after{content:"";position:absolute;top:11px;left:50%;width:100%;height:2px;background:#E3E8EF}
.ladder .st:last-child::after{display:none}
.ladder .st.on{color:var(--chem-deep)}
.ladder .st.on::before{border-color:var(--chem);background:var(--chem-soft);box-shadow:0 0 0 3px rgba(14,124,123,.12)}
.ladder .st.ok::before{border-color:var(--chem);background:var(--chem)}
.ladder .st.ok::after{background:var(--chem)}

.qstep{border:1px solid var(--line);border-radius:11px;padding:12px;margin-bottom:10px;background:#fff}
.qstep.cur{border-color:var(--navy);box-shadow:0 0 0 3px rgba(15,76,129,.07)}
.qstep.dim{opacity:.4;pointer-events:none}
.qstep .sh{display:flex;align-items:center;gap:6px;margin-bottom:6px}
.qstep .sh .lv{font-size:10.5px;font-weight:800;color:#fff;background:var(--navy);border-radius:4px;padding:1px 6px}
.qstep .stem2{font-size:13.5px;font-weight:600;line-height:1.6}

/* 题量调节 */
.vol{display:flex;align-items:center;gap:8px;padding:9px 11px;border-radius:9px;background:#F7FAFC;border:1px solid var(--line)}
.vol .vt{flex:1;font-size:12px;font-weight:700}
.vol .vsub{font-size:10.5px;color:var(--mute);font-weight:500}
.switch{width:42px;height:24px;border-radius:999px;background:#D6DEE7;position:relative;transition:.18s;flex:0 0 auto}
.switch::after{content:"";position:absolute;left:2px;top:2px;width:20px;height:20px;border-radius:50%;background:#fff;
  box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.18s}
.switch.on{background:var(--chem)}
.switch.on::after{left:20px}

/* 小尺寸手机再收紧一档 */
@media(max-width:400px){
  .mode-switch{grid-template-columns:1fr}
  .shots{grid-template-columns:repeat(3,1fr)}
  .big-item{grid-template-columns:40px 1fr auto;gap:10px;padding:11px 12px}
  .big-item h4{font-size:16px}
  .big-item .stat2 b{font-size:20px}
}

/* ---------- 工具条：把「这一页管什么 / 那件事去哪页」讲清楚 ---------- */
.tools{display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  background:#fff;border:1px dashed #CFDBE7;border-radius:12px;padding:12px 15px}
.tools .tl{font-size:12.5px;font-weight:700;color:var(--navy);display:flex;align-items:center;gap:7px;flex:0 0 auto}
.tools .tl em{font-style:normal;font-size:10.5px;font-weight:600;color:var(--mute)}
.tools .links{display:flex;gap:7px;flex-wrap:wrap;margin-left:auto;flex:0 0 auto}
.tools .links a{font-size:12px;font-weight:600;padding:5px 11px;border-radius:7px;
  background:#F4F8FB;border:1px solid var(--line);color:var(--sub);white-space:nowrap;transition:.15s}
.tools .links a:hover{background:var(--navy-soft);color:var(--navy);border-color:#CFE0F0}
@media(max-width:640px){.tools .links{margin-left:0;width:100%}}

/* ---------- 顶部七个一级入口：中小屏收紧，避免换行 ---------- */
@media(max-width:1180px){
  .nav-links a{padding:6px 9px;font-size:12.5px}
  .brand{margin-right:8px}
  .brand small{display:none}
  .role-pill{font-size:11px;padding:4px 8px}
}
@media(max-width:980px){
  .nav-links a{padding:5px 7px;font-size:12px}
  .nav-role{display:none}
}