/* ============ 六级通 CET-6 训练营 · 视觉系统 ============ */
:root{
  --bg:#F6F5F1;
  --bg-grain:rgba(27,29,34,.028);
  --surface:#FFFFFF;
  --surface-2:#FAF9F6;
  --surface-3:#F2F1EC;
  --ink:#1B1D22;
  --ink-2:#454A54;
  --muted:#8A9099;
  --line:#E6E4DD;
  --line-2:#D8D5CC;
  --primary:#2E4B9B;
  --primary-2:#3C63C4;
  --primary-soft:#EBEFFA;
  --gold:#B4791F;
  --gold-soft:#FBF3E4;
  --good:#2F7D5C;
  --good-soft:#E7F4EE;
  --bad:#B3382C;
  --bad-soft:#FBEBE9;
  --shadow-sm:0 1px 2px rgba(20,22,28,.05),0 1px 1px rgba(20,22,28,.04);
  --shadow:0 2px 6px rgba(20,22,28,.055),0 10px 26px -14px rgba(20,22,28,.22);
  --shadow-lg:0 6px 16px rgba(20,22,28,.07),0 30px 60px -30px rgba(20,22,28,.3);
  --r-sm:8px; --r:12px; --r-md:16px; --r-lg:22px;
  --sans:"Inter","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --serif:"Iowan Old Style","Palatino Linotype","Songti SC","SimSun",Georgia,serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --sidebar-w:246px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  background:var(--bg);
  background-image:radial-gradient(1200px 600px at 12% -8%,#fff 0%,rgba(255,255,255,0) 60%),var(--bg-grain);
  color:var(--ink);
  font-size:14.5px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
button{font-family:inherit;font-size:inherit;color:inherit}
a{color:var(--primary);text-decoration:none}
::selection{background:#D6E0F7}

/* ---------- 布局 ---------- */
.app{display:flex;min-height:100vh}

.sidebar{
  width:var(--sidebar-w);flex:0 0 var(--sidebar-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  position:sticky;top:0;height:100vh;z-index:40;
}
.main{flex:1;min-width:0;display:flex;flex-direction:column}

.brand{display:flex;gap:11px;align-items:center;padding:20px 18px 16px}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 38px;
  background:linear-gradient(150deg,var(--primary-2),var(--primary) 60%,#1D3268);
  color:#fff;display:grid;place-items:center;
  font-family:var(--serif);font-size:21px;font-weight:700;
  box-shadow:0 4px 12px -3px rgba(46,75,155,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px;letter-spacing:.01em}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}

.nav{flex:1;overflow-y:auto;padding:6px 12px 12px}
.nav-group{margin:14px 0 6px;padding:0 10px;font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--muted);font-weight:600}
.nav-item{
  display:flex;align-items:center;gap:10px;
  padding:8.5px 10px;border-radius:10px;
  color:var(--ink-2);cursor:pointer;font-size:13.6px;font-weight:500;
  border:none;background:none;width:100%;text-align:left;
  transition:background .14s,color .14s;
}
.nav-item svg{width:17px;height:17px;flex:0 0 17px;stroke:var(--muted);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;transition:stroke .14s}
.nav-item:hover{background:var(--surface-3);color:var(--ink)}
.nav-item:hover svg{stroke:var(--ink-2)}
.nav-item.active{background:var(--primary-soft);color:var(--primary);font-weight:620}
.nav-item.active svg{stroke:var(--primary)}
.nav-item .badge{
  margin-left:auto;font-size:10.5px;font-weight:700;min-width:19px;height:19px;padding:0 5px;
  border-radius:999px;background:var(--primary);color:#fff;display:grid;place-items:center;
}
.nav-item.active .badge{background:var(--primary)}
.nav-item .badge.soft{background:var(--surface-3);color:var(--muted)}
.nav-item.active .badge.soft{background:#fff;color:var(--primary)}

.side-foot{padding:12px;border-top:1px solid var(--line)}
.streak-card{display:flex;align-items:center;gap:11px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-md);padding:11px 12px}
.streak-ring{position:relative;width:44px;height:44px;flex:0 0 44px}
.streak-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring-bg{fill:none;stroke:var(--surface-3);stroke-width:4}
.ring-fg{fill:none;stroke:var(--primary);stroke-width:4;stroke-linecap:round;stroke-dasharray:113.1;stroke-dashoffset:113.1;transition:stroke-dashoffset .6s ease}
.streak-num{position:absolute;inset:0;display:grid;place-items:center;font-size:15px;font-weight:700;font-family:var(--serif)}
.streak-meta{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.streak-meta strong{font-size:12.8px}
.streak-meta span{font-size:11.2px;color:var(--muted)}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;gap:16px;
  padding:15px 30px;
  background:rgba(246,245,241,.86);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-title{flex:1;min-width:0}
.topbar-title h1{font-size:20px;font-family:var(--serif);letter-spacing:.01em}
.topbar-title p{font-size:12.6px;color:var(--muted);margin-top:1px}
.topbar-actions{display:flex;align-items:center;gap:9px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:12.4px;font-weight:600;color:var(--ink-2);
  white-space:nowrap;box-shadow:var(--shadow-sm);
}
.pill svg{width:14px;height:14px;stroke:var(--muted);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.pill span{color:var(--primary);font-weight:750}
.pill.hide{display:none}

.view{padding:24px 30px 72px;max-width:1240px;width:100%;animation:rise .28s ease both}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 16px;border-radius:10px;border:1px solid var(--line-2);
  background:var(--surface);color:var(--ink);
  font-size:13.4px;font-weight:600;cursor:pointer;
  transition:transform .12s,box-shadow .16s,background .16s,border-color .16s;
  box-shadow:var(--shadow-sm);white-space:nowrap;
}
.btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.btn:hover{border-color:var(--line-2);box-shadow:var(--shadow);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 5px rgba(46,75,155,.25)}
.btn-primary:hover{background:var(--primary-2);border-color:var(--primary-2);box-shadow:0 6px 16px -6px rgba(46,75,155,.6)}
.btn-gold{background:var(--gold);border-color:var(--gold);color:#fff;box-shadow:0 2px 5px rgba(180,121,31,.25)}
.btn-gold:hover{background:#9c6616;border-color:#9c6616}
.btn-ghost{background:transparent;border-color:transparent;box-shadow:none;color:var(--ink-2)}
.btn-ghost:hover{background:var(--surface-3);box-shadow:none}
.btn-lg{padding:12px 24px;font-size:14.6px;border-radius:12px}
.btn-sm{padding:6px 11px;font-size:12.4px;border-radius:8px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.icon-btn{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line);
  background:var(--surface);display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-sm)
}
.icon-btn svg{width:17px;height:17px;stroke:var(--ink-2);fill:none;stroke-width:1.8;stroke-linecap:round}
.icon-btn:hover{background:var(--surface-3)}
.only-mobile{display:none}

.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow);
}
.card-pad{padding:20px 22px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.card-head h3{font-size:15.5px;display:flex;align-items:center;gap:8px}
.card-head h3 svg{width:17px;height:17px;stroke:var(--primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card-sub{font-size:12.4px;color:var(--muted)}

.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))}
.g-2-1{grid-template-columns:minmax(0,2fr) minmax(0,1fr)}
.g-1-2{grid-template-columns:minmax(0,1fr) minmax(0,2fr)}

.section-title{font-size:12px;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);font-weight:650;margin:26px 0 12px;display:flex;align-items:center;gap:9px}
.section-title::after{content:"";flex:1;height:1px;background:var(--line)}

.tag{display:inline-flex;align-items:center;padding:2.5px 9px;border-radius:999px;font-size:11.4px;font-weight:600;background:var(--surface-3);color:var(--ink-2)}
.tag-primary{background:var(--primary-soft);color:var(--primary)}
.tag-gold{background:var(--gold-soft);color:var(--gold)}
.tag-good{background:var(--good-soft);color:var(--good)}
.tag-bad{background:var(--bad-soft);color:var(--bad)}

.seg{display:inline-flex;background:var(--surface-3);border-radius:11px;padding:3.5px;gap:2px}
.seg button{
  border:none;background:none;padding:6.5px 15px;border-radius:8px;
  font-size:12.8px;font-weight:600;color:var(--muted);cursor:pointer;transition:.15s
}
.seg button.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}

/* 进度条 */
.bar{height:7px;border-radius:999px;background:var(--surface-3);overflow:hidden}
.bar > i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary-2),var(--primary));transition:width .5s cubic-bezier(.2,.8,.2,1)}
.bar.gold > i{background:linear-gradient(90deg,#D19A3D,var(--gold))}
.bar.good > i{background:linear-gradient(90deg,#4AA37A,var(--good))}
.bar.bad > i{background:linear-gradient(90deg,#D0685C,var(--bad))}

/* 统计块 */
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:15px 16px;box-shadow:var(--shadow-sm)}
.stat .k{font-size:11.4px;color:var(--muted);letter-spacing:.04em;display:flex;align-items:center;gap:6px}
.stat .k svg{width:14px;height:14px;flex:0 0 14px;stroke:var(--muted);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.stat .v{font-family:var(--serif);font-size:27px;font-weight:700;line-height:1.15;margin-top:5px;letter-spacing:-.01em}
.stat .v small{font-size:13px;font-weight:600;color:var(--muted);font-family:var(--sans);margin-left:2px}
.stat .d{font-size:11.6px;color:var(--muted);margin-top:3px}
.stat.hl{background:linear-gradient(160deg,#F5F8FE,var(--surface));border-color:#D6E0F7}

/* 通用：所有内联图标默认描边不填充 */
.view svg,.sidebar svg,.topbar svg{fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.view svg path,.view svg circle,.view svg rect,.view svg polyline{fill:none}

/* ---------- 今日计划 ---------- */
.plan-item{
  display:flex;align-items:center;gap:13px;padding:13px 15px;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);
  cursor:pointer;transition:.16s;text-align:left;width:100%;
}
.plan-item:hover{border-color:#C9D4F0;box-shadow:var(--shadow);transform:translateY(-1px)}
.plan-ico{width:38px;height:38px;flex:0 0 38px;border-radius:11px;display:grid;place-items:center;background:var(--primary-soft)}
.plan-ico svg{width:19px;height:19px;stroke:var(--primary);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.plan-ico.gold{background:var(--gold-soft)} .plan-ico.gold svg{stroke:var(--gold)}
.plan-ico.good{background:var(--good-soft)} .plan-ico.good svg{stroke:var(--good)}
.plan-txt{flex:1;min-width:0}
.plan-txt strong{display:block;font-size:14px;font-weight:620}
.plan-txt span{font-size:12.2px;color:var(--muted)}
.plan-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.plan-done{color:var(--good)}
.plan-done svg{width:20px;height:20px;stroke:var(--good);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 单词卡 ---------- */
.word-stage{display:flex;flex-direction:column;gap:18px;align-items:center}
.flashcard{
  width:100%;max-width:640px;min-height:290px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);padding:34px 30px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  position:relative;overflow:hidden;
}
.flashcard::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:linear-gradient(90deg,var(--primary-2),var(--primary),var(--gold))}
.fc-word{font-family:var(--serif);font-size:42px;font-weight:700;letter-spacing:-.015em;line-height:1.1}
.fc-ph{font-family:var(--mono);font-size:14px;color:var(--muted);margin-top:8px}
.fc-cn{font-size:17px;font-weight:550;margin-top:16px}
.fc-pos{font-family:var(--mono);font-size:11.5px;color:var(--primary);background:var(--primary-soft);padding:2px 8px;border-radius:6px;margin-right:8px}
.fc-ex{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line-2);width:100%}
.fc-ex .en{font-size:14.6px;font-style:italic;color:var(--ink-2)}
.fc-ex .zh{font-size:12.8px;color:var(--muted);margin-top:4px}
.fc-tags{margin-top:14px;display:flex;gap:6px;justify-content:center;flex-wrap:wrap}
.fc-hint{position:absolute;bottom:12px;font-size:11.4px;color:var(--muted)}
.speak-btn{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-sm)}
.speak-btn svg{width:17px;height:17px;stroke:var(--ink-2);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.speak-btn.playing svg{stroke:var(--primary);animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.grade-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%;max-width:640px}
.grade{
  padding:11px 6px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  cursor:pointer;text-align:center;transition:.15s;box-shadow:var(--shadow-sm)
}
.grade:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.grade b{display:block;font-size:13.6px;font-weight:650}
.grade span{font-size:11px;color:var(--muted)}
.grade.g1{border-color:#EBC9C5} .grade.g1:hover{border-color:var(--bad);background:var(--bad-soft)}
.grade.g2{border-color:#EBDCC0} .grade.g2:hover{border-color:var(--gold);background:var(--gold-soft)}
.grade.g3{border-color:#C9D7F1} .grade.g3:hover{border-color:var(--primary-2);background:var(--primary-soft)}
.grade.g4{border-color:#BEDECD} .grade.g4:hover{border-color:var(--good);background:var(--good-soft)}

/* ---------- 题目 / 选项 ---------- */
.q-block{margin-bottom:26px}
.q-title{font-size:15.5px;font-weight:600;line-height:1.55;margin-bottom:14px;display:flex;gap:10px}
.q-title .qn{
  flex:0 0 auto;width:24px;height:24px;border-radius:7px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-size:12px;font-weight:700;font-family:var(--sans);margin-top:2px
}
.opts{display:flex;flex-direction:column;gap:9px}
.opt{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 15px;border-radius:var(--r-md);border:1px solid var(--line);
  background:var(--surface);cursor:pointer;transition:.15s;text-align:left;width:100%;
  font-size:14px;line-height:1.55;
}
.opt:hover:not(.locked){border-color:#B9C7EA;background:#FAFBFF}
.opt .key{
  flex:0 0 23px;height:23px;border-radius:7px;background:var(--surface-3);color:var(--ink-2);
  display:grid;place-items:center;font-size:12px;font-weight:700;font-family:var(--sans)
}
.opt.sel{border-color:var(--primary-2);background:var(--primary-soft)}
.opt.sel .key{background:var(--primary);color:#fff}
.opt.right{border-color:#A9D5BE;background:var(--good-soft)}
.opt.right .key{background:var(--good);color:#fff}
.opt.wrong{border-color:#E7B4AE;background:var(--bad-soft)}
.opt.wrong .key{background:var(--bad);color:#fff}
.opt.locked{cursor:default}
.opt .mk{margin-left:auto;font-size:11.5px;font-weight:700;white-space:nowrap}

.explain{
  margin-top:12px;padding:13px 15px;border-radius:var(--r-md);
  background:var(--surface-2);border:1px solid var(--line);font-size:13.2px;line-height:1.65;color:var(--ink-2);
  animation:rise .22s ease both;
}
.explain b{color:var(--ink)}

/* ---------- 阅读 / 听力 ---------- */
.reader{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 30px;box-shadow:var(--shadow-sm);
  font-size:15.4px;line-height:1.95;color:#2A2D34;
  font-family:"Georgia","Times New Roman",var(--serif);
}
.reader p{margin:0 0 15px}
.reader p:last-child{margin-bottom:0}
.reader .para-no{
  display:inline-grid;place-items:center;width:20px;height:20px;border-radius:6px;
  background:var(--primary-soft);color:var(--primary);font-family:var(--sans);font-size:11px;
  font-weight:700;margin-right:8px;vertical-align:2px;
}
.reader .blank{
  display:inline-block;min-width:88px;border-bottom:1.5px solid var(--line-2);
  margin:0 3px;cursor:pointer;transition:.15s
}
.reader .blank.filled{border-bottom-color:var(--primary);color:var(--primary);font-weight:600;font-family:var(--sans);font-size:13px}
.reader .blank.ok{border-bottom-color:var(--good);color:var(--good)}
.reader .blank.no{border-bottom-color:var(--bad);color:var(--bad)}
.reader .hl{background:#FFF1B8;border-radius:3px;padding:0 1px}
.reader-wrap{position:relative}
.reader-tools{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px;align-items:center}
.audio-bar{
  display:flex;align-items:center;gap:12px;padding:13px 16px;border-radius:var(--r-md);
  background:linear-gradient(120deg,#F3F6FD,var(--surface));border:1px solid #DDE4F5;margin-bottom:14px;
}
.audio-bar .wave{display:flex;align-items:center;gap:2.5px;height:26px;flex:0 0 auto}
.audio-bar .wave i{width:3px;border-radius:2px;background:var(--primary-2);opacity:.45;height:8px;transition:.25s}
.audio-bar.playing .wave i{opacity:1;animation:wave 1s ease-in-out infinite}
.audio-bar .wave i:nth-child(2){animation-delay:.12s}.audio-bar .wave i:nth-child(3){animation-delay:.24s}
.audio-bar .wave i:nth-child(4){animation-delay:.36s}.audio-bar .wave i:nth-child(5){animation-delay:.48s}
.audio-bar .wave i:nth-child(6){animation-delay:.6s}.audio-bar .wave i:nth-child(7){animation-delay:.72s}
@keyframes wave{0%,100%{height:8px}50%{height:24px}}
.audio-bar .t{flex:1;min-width:0;font-size:13.4px;font-weight:600}
.audio-bar .t small{display:block;font-weight:400;color:var(--muted);font-size:11.6px;margin-top:1px}
.speed{display:inline-flex;background:var(--surface-3);border-radius:8px;padding:2.5px;gap:2px}
.speed button{border:none;background:none;padding:3.5px 9px;border-radius:6px;font-size:11.6px;font-weight:650;color:var(--muted);cursor:pointer}
.speed button.on{background:var(--surface);color:var(--primary);box-shadow:var(--shadow-sm)}
.script{display:none;margin-top:12px;padding:15px 17px;border-radius:var(--r-md);background:var(--surface-2);border:1px solid var(--line);font-size:14px;line-height:1.85}
.script.show{display:block;animation:rise .2s ease both}
.script .sent{padding:5px 8px;border-radius:6px;margin:0 -8px;transition:.15s;cursor:pointer}
.script .sent:hover{background:#EEF2FC}
.script .sent.cur{background:#FFF6DA;box-shadow:inset 2px 0 0 var(--gold)}

/* 听力填空 */
.gap-input{
  border:none;border-bottom:1.5px solid var(--primary);background:transparent;
  font:inherit;font-size:15px;width:110px;color:var(--primary);outline:none;padding:0 2px;
}
.gap-input:focus{border-bottom-color:var(--primary-2)}
.gap-input.ok{border-color:var(--good);color:var(--good)}
.gap-input.no{border-color:var(--bad);color:var(--bad)}

/* ---------- 翻译 / 写作 ---------- */
.paper{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--shadow-sm);overflow:hidden}
.paper-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 18px;background:var(--surface-2);border-bottom:1px solid var(--line);font-size:12.2px;color:var(--muted)}
.paper textarea{
  width:100%;border:none;outline:none;resize:vertical;min-height:230px;
  padding:20px 24px;font:15.4px/1.9 Georgia,var(--serif);background:var(--surface);color:var(--ink);
}
.paper textarea::placeholder{color:#B6B9C0;font-style:italic}
.wordcount{display:inline-flex;align-items:center;gap:4px;font-variant-numeric:tabular-nums}
.wordcount b{color:var(--primary)}
.kv{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:13.6px;align-items:flex-start}
.kv:last-child{border-bottom:none}
.kv .k{flex:0 0 78px;color:var(--muted);font-size:12.4px;font-weight:600;padding-top:1px}
.kv .v{flex:1;min-width:0;line-height:1.7}
.kv .v em{font-style:normal;background:var(--gold-soft);color:var(--gold);padding:0 4px;border-radius:4px;font-weight:600}
.chip-row{display:flex;flex-wrap:wrap;gap:7px}
.chip{padding:6px 11px;border-radius:8px;background:var(--surface-3);font-size:12.6px;color:var(--ink-2);border:1px solid transparent;cursor:pointer;transition:.14s}
.chip:hover{border-color:var(--primary-2);color:var(--primary)}

/* ---------- 图表 ---------- */
.chart{display:flex;align-items:flex-end;gap:10px;height:150px;padding-top:12px}
.chart .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;min-width:0}
.chart .bar{width:100%;max-width:42px;background:linear-gradient(180deg,var(--primary-2),var(--primary));border-radius:7px 7px 3px 3px;min-height:3px;position:relative;transition:height .6s cubic-bezier(.2,.8,.2,1)}
.chart .bar.gold{background:linear-gradient(180deg,#D8A448,var(--gold))}
.chart .lb{font-size:10.8px;color:var(--muted);white-space:nowrap}
.donut-wrap{display:flex;align-items:center;gap:20px}
.donut{width:132px;height:132px;flex:0 0 132px;border-radius:50%;position:relative}
.donut::after{content:"";position:absolute;inset:22px;background:var(--surface);border-radius:50%}
.donut .c{position:absolute;inset:0;display:grid;place-items:center;z-index:1;font-family:var(--serif);font-size:24px;font-weight:700}
.legend{display:flex;flex-direction:column;gap:8px;font-size:12.8px}
.legend .row{display:flex;align-items:center;gap:8px}
.legend .sw{width:9px;height:9px;border-radius:3px}
.legend .row b{margin-left:auto;font-variant-numeric:tabular-nums}

/* ---------- 表格 ---------- */
table.tbl{width:100%;border-collapse:collapse;font-size:13.4px}
table.tbl th{
  text-align:left;font-size:11.4px;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);
  font-weight:650;padding:9px 12px;border-bottom:1px solid var(--line);background:var(--surface-2);
}
table.tbl td{padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}
table.tbl tr:last-child td{border-bottom:none}
table.tbl tbody tr:hover{background:var(--surface-2)}

/* ---------- 空态 / 吐司 ---------- */
.empty{text-align:center;padding:52px 20px;color:var(--muted)}
.empty svg{width:46px;height:46px;stroke:#CFD3DA;fill:none;stroke-width:1.4;margin-bottom:12px;stroke-linecap:round;stroke-linejoin:round}
.empty h4{font-size:15px;color:var(--ink-2);margin-bottom:5px}
.empty p{font-size:13px;max-width:380px;margin:0 auto}

.toast-wrap{position:fixed;right:22px;bottom:22px;z-index:200;display:flex;flex-direction:column;gap:9px;align-items:flex-end}
.toast{
  background:var(--ink);color:#fff;padding:11px 17px;border-radius:11px;font-size:13.2px;
  box-shadow:var(--shadow-lg);animation:toastIn .26s cubic-bezier(.2,.9,.3,1);max-width:340px;
  display:flex;align-items:center;gap:9px;
}
.toast.good{background:var(--good)} .toast.bad{background:var(--bad)}
.toast svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;flex:0 0 16px}
@keyframes toastIn{from{opacity:0;transform:translateY(12px) scale(.96)}to{opacity:1;transform:none}}

/* ---------- 模考 ---------- */
.exam-bar{
  position:sticky;top:66px;z-index:25;display:flex;align-items:center;gap:14px;
  padding:11px 18px;border-radius:var(--r-md);background:var(--ink);color:#fff;box-shadow:var(--shadow);
  margin-bottom:18px;
}
.exam-bar .tm{font-family:var(--mono);font-size:19px;font-weight:700;letter-spacing:.03em;min-width:74px}
.exam-bar .t{font-size:12.8px;opacity:.82;flex:1}
.exam-bar .prog{flex:2;height:6px;border-radius:999px;background:rgba(255,255,255,.18);overflow:hidden;max-width:300px}
.exam-bar .prog i{display:block;height:100%;background:var(--gold);border-radius:999px;transition:width .4s}
.exam-bar .btn{padding:6px 13px;font-size:12.4px}
.exam-bar .btn-sub{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:#fff;box-shadow:none}
.exam-bar .btn-sub:hover{background:rgba(255,255,255,.18)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-2-1,.g-1-2{grid-template-columns:minmax(0,1fr)}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:860px){
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .25s;box-shadow:var(--shadow-lg)}
  .sidebar.open{transform:none}
  .scrim{position:fixed;inset:0;background:rgba(20,22,28,.4);z-index:39;opacity:0;pointer-events:none;transition:opacity .22s}
  .scrim.show{opacity:1;pointer-events:auto}
  .only-mobile{display:grid}
  .topbar{padding:12px 16px}
  .view{padding:18px 16px 80px}
  .g2,.g3,.g4{grid-template-columns:minmax(0,1fr)}
  .pill.hide{display:none}
  .flashcard{padding:28px 18px;min-height:250px}
  .fc-word{font-size:34px}
  .grade-row{grid-template-columns:repeat(2,1fr)}
  .reader{padding:18px 18px;font-size:15px}
  .topbar-actions .btn span{display:none}
}