/* ==========================================================================
   IELTS Studio · design tokens
   ========================================================================== */
:root{
  --bg:#f5f7fb;
  --panel:#ffffff;
  --panel2:#fbfcfe;
  --ink:#0f172a;
  --ink2:#334155;
  --ink3:#5b6b83;
  --muted:#8b98ab;
  --line:#e5eaf2;
  --line2:#eef2f8;
  --accent:#2563eb;
  --accent2:#1d4ed8;
  --soft:#eef4ff;
  --green:#0f9d58;
  --green-soft:#e8f7ef;
  --amber:#d97706;
  --amber-soft:#fef4e6;
  --red:#dc2626;
  --red-soft:#fdecec;
  --violet:#7c3aed;
  --violet-soft:#f3eeff;
  --teal:#0d9488;
  --teal-soft:#e6f7f4;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.05);
  --shadow-lg:0 24px 60px rgba(15,23,42,.16);
  --r:14px;
}
html[data-theme="dark"]{
  --bg:#0b1120;
  --panel:#111a2e;
  --panel2:#0e1729;
  --ink:#e8eefc;
  --ink2:#c3cee3;
  --ink3:#9aa9c2;
  --muted:#7b8aa5;
  --line:#22304a;
  --line2:#1a2740;
  --accent:#5b8cff;
  --accent2:#7aa2ff;
  --soft:#16233c;
  --green:#34d399;
  --green-soft:#102a22;
  --amber:#fbbf24;
  --amber-soft:#2a2113;
  --red:#f87171;
  --red-soft:#2c1618;
  --violet:#a78bfa;
  --violet-soft:#1e1b33;
  --teal:#2dd4bf;
  --teal-soft:#0d2724;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.28);
  --shadow-lg:0 24px 60px rgba(0,0,0,.5);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
button{font-family:inherit}
.hidden{display:none!important}
::selection{background:rgba(37,99,235,.18)}

/* ==========================================================================
   shell
   ========================================================================== */
.app{display:grid;grid-template-columns:236px minmax(0,1fr);min-height:100vh}
.side{
  background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;
}
.brand{display:flex;align-items:center;gap:10px;padding:18px 18px 14px}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--violet));
  color:#fff;font-weight:800;display:grid;place-items:center;font-size:16px;font-family:var(--serif);
  box-shadow:0 6px 16px rgba(37,99,235,.3)
}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt b{font-size:14px;letter-spacing:-.01em}
.brand-txt i{font-style:normal;font-size:11px;color:var(--muted)}

.nav{padding:6px 10px;overflow:auto;flex:1}
.nav-group{margin:12px 0 4px;padding:0 10px;font-size:10.5px;letter-spacing:.1em;color:var(--muted);font-weight:700}
.nav a{
  display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:9px;
  color:var(--ink2);font-size:13px;font-weight:500;margin-bottom:2px;
}
.nav a:hover{background:var(--line2);color:var(--ink)}
.nav a.on{background:var(--soft);color:var(--accent2);font-weight:700}
.nav a .dot{width:6px;height:6px;border-radius:3px;background:currentColor;opacity:.45;flex:none}
.nav a.on .dot{opacity:1}
.nav a .n{margin-left:auto;font-family:var(--mono);font-size:10px;color:var(--muted)}
.nav a .pill{margin-left:auto;background:var(--accent);color:#fff;border-radius:20px;font-size:10px;padding:1px 7px;font-weight:700}

.side-foot{border-top:1px solid var(--line);padding:12px 14px 14px}
.who{display:flex;align-items:center;gap:9px}
.avatar{
  width:30px;height:30px;border-radius:50%;background:var(--soft);color:var(--accent2);
  display:grid;place-items:center;font-weight:800;font-size:13px;flex:none
}
.who-txt{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.who-txt b{font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.who-txt span{font-size:10.5px;color:var(--muted)}
.side-actions{display:flex;gap:6px;margin-top:9px}
.side-actions button{flex:1}

.main{display:flex;flex-direction:column;min-width:0}
.top{
  height:56px;display:flex;align-items:center;justify-content:space-between;
  padding:0 26px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--panel) 86%,transparent);
  position:sticky;top:0;z-index:20;backdrop-filter:blur(8px)
}
.crumb{font-size:12.5px;color:var(--muted);display:flex;gap:6px;align-items:center}
.crumb b{color:var(--ink);font-weight:700}
.top-actions{display:flex;gap:8px;align-items:center}
.view{padding:24px 26px 60px;max-width:1220px;width:100%}

/* ==========================================================================
   typography helpers
   ========================================================================== */
h1,h2,h3,h4{margin:0;letter-spacing:-.015em}
.page-h{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.page-h h1{font-size:23px;font-weight:800}
.page-h p{margin:4px 0 0;color:var(--ink3);font-size:13px;max-width:640px}
.h2{font-size:15px;font-weight:800;margin:26px 0 10px;display:flex;align-items:center;gap:8px}
.h2::after{content:"";flex:1;height:1px;background:var(--line)}
.muted{color:var(--muted)}
.small{font-size:12px}
.mono{font-family:var(--mono)}
.center{text-align:center}

/* ==========================================================================
   cards / grids
   ========================================================================== */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.card.pad{padding:18px}
.card.flat{box-shadow:none}
.g2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.g3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.g4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.split{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:18px;align-items:start}
/* 写作/口语：题目在左、头脑风暴在右，输出面板放下面整行（长文阅读更舒服） */
.work-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,.96fr);gap:18px;align-items:start;margin-top:14px}
.work-col{display:flex;flex-direction:column;gap:12px;min-width:0}
/* 右边导图很长时，左边的题目跟着滚动会看不见；窗口够高就把它粘住（只限两栏时） */
@media(min-width:1181px) and (min-height:780px){
  .work-col.q-col{position:sticky;top:72px;align-self:start}
}
.work-col .w-tools{margin-top:0;grid-template-columns:1fr 1fr;gap:10px 12px}
.work-col .w-tools .field:nth-child(3){grid-column:1/-1}
.work-col .w-tools .wt-save{grid-column:1/-1;text-align:right}
.out-card{margin-top:18px;padding:14px 18px 18px}
.out-body #wOut,.out-body #sOut{max-width:900px;margin:0 auto}
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.spacer{flex:1}

/* stat */
.stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:13px 14px}
.stat span{display:block;font-size:11px;color:var(--muted);letter-spacing:.04em}
.stat b{font-size:22px;font-weight:800;letter-spacing:-.02em}
.stat small{font-size:11px;color:var(--muted);margin-left:3px}

/* ==========================================================================
   buttons / inputs
   ========================================================================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:36px;padding:0 14px;border-radius:9px;border:1px solid var(--accent);
  background:var(--accent);color:#fff;font-size:13px;font-weight:600;cursor:pointer;
  transition:.14s transform,.14s box-shadow,.14s background;white-space:nowrap
}
.btn:hover{background:var(--accent2);border-color:var(--accent2);transform:translateY(-1px);box-shadow:0 6px 16px rgba(37,99,235,.25)}
.btn:active{transform:none}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.btn.ghost{background:transparent;color:var(--ink2);border-color:var(--line)}
.btn.ghost:hover{background:var(--line2);color:var(--ink);box-shadow:none}
.ghost{background:transparent;color:var(--ink2);border:1px solid var(--line);border-radius:9px;height:32px;padding:0 11px;font-size:12.5px;cursor:pointer}
.ghost:hover{background:var(--line2)}
.mini{height:26px;padding:0 8px;font-size:11.5px;border-radius:7px}
.linkbtn{background:none;border:none;color:var(--accent);cursor:pointer;font-size:12.5px;padding:2px 4px}
.linkbtn.danger{color:var(--red)}

.field{display:flex;flex-direction:column;gap:5px;margin-bottom:11px}
.field label{font-size:12px;font-weight:700;color:var(--ink3)}
.field .hint{font-size:11px;color:var(--muted);line-height:1.45}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input:not([type]),select,textarea{
  width:100%;border:1px solid var(--line);border-radius:9px;background:var(--panel2);color:var(--ink);
  padding:9px 11px;font-size:13.5px;font-family:inherit;outline:none;transition:.14s border,.14s box-shadow
}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.12);background:var(--panel)}
textarea{resize:vertical;line-height:1.65;min-height:80px}
textarea.essay{font-family:var(--serif);font-size:15px;line-height:1.85;min-height:280px}
input[type=radio],input[type=checkbox]{accent-color:var(--accent)}

/* segmented */
.seg{display:inline-flex;background:var(--line2);border-radius:9px;padding:3px;gap:2px}
.seg button{border:none;background:none;padding:5px 12px;border-radius:7px;font-size:12.5px;color:var(--ink3);cursor:pointer;font-weight:600}
.seg button.on{background:var(--panel);color:var(--ink);box-shadow:var(--shadow)}

/* ==========================================================================
   badges / chips
   ========================================================================== */
.badge{display:inline-flex;align-items:center;gap:4px;font-size:10.5px;font-weight:700;letter-spacing:.03em;
  padding:2px 7px;border-radius:6px;background:var(--soft);color:var(--accent2);white-space:nowrap}
.badge.g{background:var(--green-soft);color:var(--green)}
.badge.a{background:var(--amber-soft);color:var(--amber)}
.badge.r{background:var(--red-soft);color:var(--red)}
.badge.v{background:var(--violet-soft);color:var(--violet)}
.badge.t{background:var(--teal-soft);color:var(--teal)}
.badge.plain{background:var(--line2);color:var(--ink3)}
.chip{display:inline-flex;align-items:center;gap:5px;background:var(--panel2);border:1px solid var(--line);
  border-radius:20px;padding:3px 10px;font-size:11.5px;color:var(--ink2)}
.chip b{font-weight:700}
.chip button{border:none;background:none;color:var(--muted);cursor:pointer;font-size:12px;padding:0}
.chip button:hover{color:var(--red)}

/* ==========================================================================
   table
   ========================================================================== */
table.tbl{width:100%;border-collapse:collapse;font-size:12.5px}
table.tbl th{text-align:left;font-size:10.5px;letter-spacing:.06em;color:var(--muted);font-weight:700;
  padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
table.tbl td{padding:9px 10px;border-bottom:1px solid var(--line2);color:var(--ink2);vertical-align:top}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tr:hover td{background:var(--panel2)}
.tblwrap{overflow:auto}

/* ==========================================================================
   toast / modal / loading
   ========================================================================== */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);z-index:200;
  background:#101828;color:#fff;padding:10px 16px;border-radius:10px;font-size:13px;
  opacity:0;pointer-events:none;transition:.2s;max-width:80vw;box-shadow:var(--shadow-lg)
}
.toast.on{opacity:1;transform:translate(-50%,0)}
.toast.err{background:#b91c1c}
.toast.ok{background:#065f46}

.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:150;display:grid;place-items:center;padding:20px}
.modal-card{background:var(--panel);border-radius:16px;box-shadow:var(--shadow-lg);width:min(720px,100%);
  max-height:86vh;overflow:auto;padding:20px 22px}
.modal-card h3{font-size:16px;margin-bottom:4px}
.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}

.loading{position:fixed;inset:0;display:grid;place-items:center;background:rgba(245,247,251,.6);z-index:190;backdrop-filter:blur(2px)}
html[data-theme="dark"] .loading{background:rgba(11,17,32,.6)}
.spinner{width:26px;height:26px;border-radius:50%;border:2.5px solid var(--line);border-top-color:var(--accent);animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.empty{border:1px dashed var(--line);border-radius:12px;padding:26px;text-align:center;color:var(--muted);font-size:13px}
.empty b{display:block;color:var(--ink2);font-size:13.5px;margin-bottom:4px}

/* ==========================================================================
   auth
   ========================================================================== */
.auth{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr}
.auth-side{
  background:linear-gradient(150deg,#1e3a8a,#2563eb 55%,#7c3aed);color:#fff;
  padding:52px 48px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden
}
.auth-side::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 62%);right:-120px;bottom:-140px}
.auth-side h1{font-size:30px;line-height:1.25;letter-spacing:-.02em;margin-top:10px}
.auth-side p{color:rgba(255,255,255,.82);font-size:13.5px;max-width:400px;margin-top:12px}
.auth-feats{margin-top:26px;display:flex;flex-direction:column;gap:11px;position:relative;z-index:2}
.auth-feat{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:rgba(255,255,255,.9)}
.auth-feat i{width:20px;height:20px;border-radius:6px;background:rgba(255,255,255,.18);display:grid;place-items:center;
  font-style:normal;font-size:11px;flex:none;margin-top:1px}
.auth-panel{display:grid;place-items:center;padding:40px 28px;background:var(--bg)}
.auth-card{width:min(400px,100%)}
.auth-card h2{font-size:21px;margin-bottom:4px}
.auth-card .sub{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.role-pick{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}
.role-pick button{
  border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:11px 10px;
  text-align:left;cursor:pointer;transition:.14s
}
.role-pick button.on{border-color:var(--accent);background:var(--soft);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.role-pick b{display:block;font-size:13px}
.role-pick span{font-size:11px;color:var(--muted)}

/* ==========================================================================
   mind map
   ========================================================================== */
.mm{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px;overflow:auto}
.mm-root{display:flex;flex-direction:column;gap:2px}
.mm-core{
  border:1px solid var(--accent);background:var(--soft);border-radius:12px;padding:12px 14px;max-width:640px
}
.mm-core .lbl{font-size:10.5px;font-weight:800;letter-spacing:.08em;color:var(--accent2)}
.mm-core input{border:none;border-bottom:1px dashed rgba(37,99,235,.35);background:transparent;padding:3px 0;
  font-size:13.5px;font-weight:700;box-shadow:none;border-radius:0}
.mm-core .prompt-line{font-size:12px;color:var(--ink3);line-height:1.5;margin:2px 0 8px;
  border-left:2px solid rgba(37,99,235,.4);padding-left:8px}
.mm-core input:focus{box-shadow:none;border-bottom-color:var(--accent)}
.mm-branches{margin-left:18px;border-left:2px solid var(--line);padding-left:20px;margin-top:14px;display:flex;flex-direction:column;gap:12px}
.mm-node{position:relative}
.mm-node::before{
  content:"";position:absolute;left:-20px;top:20px;width:18px;height:2px;background:var(--line)
}
.mm-card{background:var(--panel2);border:1px solid var(--line);border-radius:11px;padding:10px 12px}
.mm-card>.hd{display:flex;align-items:center;gap:7px;margin-bottom:7px}
.mm-card>.hd b{font-size:12px;letter-spacing:.02em}
.mm-card>.hd .badge{margin-left:auto}
.mm-card input,.mm-card textarea{background:var(--panel);font-size:13px}
.mm-card textarea{min-height:38px;height:38px}
.mm-card .two{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mm-sub{margin:8px 0 0 12px;border-left:2px dashed var(--line);padding-left:14px;display:flex;flex-direction:column;gap:7px}
.mm-sub .lbl{font-size:10.5px;color:var(--muted);font-weight:700;letter-spacing:.04em}
.mm-point{background:var(--panel);border:1px solid var(--line2);border-radius:10px;padding:9px 10px}
.mm-point .phead{display:flex;align-items:center;gap:7px;margin-bottom:6px}
.mm-point .phead b{font-size:11.5px}
.mm-point textarea{min-height:42px;height:42px;font-size:12.5px;padding:6px 8px}
.mm-vocab{display:flex;flex-wrap:wrap;gap:6px}
.mm-vocab .chip input{border:none;background:transparent;padding:0;width:auto;font-size:11.5px;box-shadow:none}
.mm-add{
  border:1px dashed var(--line);background:transparent;color:var(--ink3);border-radius:9px;
  padding:7px 10px;font-size:12px;cursor:pointer;align-self:flex-start
}
.mm-add:hover{border-color:var(--accent);color:var(--accent)}
/* 页内添加条：取代浏览器 prompt 弹窗 */
.mm-compose{display:flex;gap:6px;flex:1 0 100%;margin-top:5px}
.mm-compose input{
  flex:1;min-width:0;font-size:12px;padding:6px 9px;border:1px solid var(--line);
  background:var(--panel);border-radius:8px;color:var(--ink);box-shadow:none
}
.mm-compose input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 2px rgba(37,99,235,.1)}
.mm-compose .mm-add{padding:0 11px;border-style:solid;white-space:nowrap;font-size:11.5px}

/* output panel */
.gen-out{margin-top:16px}
.gen-tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:12px}
.gen-tabs button{border:none;background:none;padding:8px 12px;font-size:12.5px;color:var(--ink3);
  cursor:pointer;border-bottom:2px solid transparent;font-weight:600}
.gen-tabs button.on{color:var(--accent2);border-bottom-color:var(--accent)}
.md h1,.md h2,.md h3{letter-spacing:-.01em}
.md h1{font-size:17px;margin:0 0 10px}
.md h2{font-size:14px;margin:18px 0 8px;padding-bottom:6px;border-bottom:1px solid var(--line2)}
.md p{margin:7px 0;font-size:13.2px;line-height:1.72;color:var(--ink2)}
.md ul,.md ol{margin:7px 0;padding-left:20px}
.md li{font-size:13.2px;line-height:1.7;margin:3px 0;color:var(--ink2)}
.md blockquote{margin:9px 0;padding:8px 12px;border-left:3px solid var(--accent);background:var(--soft);
  border-radius:0 8px 8px 0;color:var(--ink2);font-size:12.5px}
.md blockquote p{margin:0;font-size:12.5px}
.md code{font-family:var(--mono);font-size:12px;background:var(--line2);padding:1px 5px;border-radius:5px;color:var(--violet)}
.md pre{background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:11px;overflow:auto}
.md pre code{background:none;padding:0;color:var(--ink2)}
.md table{width:100%;border-collapse:collapse;margin:9px 0;font-size:12.3px}
.md th{text-align:left;font-size:10.5px;letter-spacing:.05em;color:var(--muted);padding:6px 9px;
  border-bottom:1px solid var(--line);background:var(--panel2)}
.md td{padding:7px 9px;border-bottom:1px solid var(--line2);vertical-align:top;color:var(--ink2)}
.md strong{color:var(--ink);font-weight:700}
.md hr{border:none;border-top:1px solid var(--line);margin:14px 0}

/* ==========================================================================
   reading
   ========================================================================== */
.passage{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px}
.passage h2{font-family:var(--serif);font-size:22px;font-weight:600;margin-bottom:6px}
.passage .meta{font-size:11.5px;color:var(--muted);margin-bottom:16px}
.para{position:relative;padding-left:30px;margin-bottom:18px}
.para .pn{position:absolute;left:0;top:2px;width:20px;height:20px;border-radius:6px;background:var(--line2);
  color:var(--ink3);font-size:10.5px;font-weight:800;display:grid;place-items:center}
.para .ptext{font-family:var(--serif);font-size:16px;line-height:1.85;color:var(--ink)}
.para .ptext .w{cursor:pointer;border-radius:3px;padding:0 1px}
.para .ptext .w:hover{background:var(--soft);color:var(--accent2)}
.para .ptext .w.marked{background:var(--amber-soft);color:var(--amber)}
.para .ptext .sent{cursor:pointer;border-bottom:1px dotted transparent}
.para .ptext .sent:hover{border-bottom-color:var(--line)}
.para .pnote{margin-top:7px}
.qitem{border:1px solid var(--line);border-radius:11px;padding:12px 14px;margin-bottom:10px;background:var(--panel)}
.qitem .qh{display:flex;gap:8px;align-items:flex-start;margin-bottom:8px}
.qitem .qh b{width:20px;height:20px;border-radius:6px;background:var(--soft);color:var(--accent2);
  font-size:11px;display:grid;place-items:center;flex:none;margin-top:2px}
.qitem .qt{font-size:13.2px;color:var(--ink);line-height:1.6}
.qopts{display:flex;flex-direction:column;gap:5px;margin-left:28px}
.qopt{display:flex;gap:8px;align-items:flex-start;font-size:12.6px;color:var(--ink2);line-height:1.5;
  padding:5px 8px;border-radius:7px;cursor:pointer;border:1px solid transparent}
.qopt:hover{background:var(--panel2)}
.qopt input{margin-top:3px}
.qopt.sel{background:var(--soft);border-color:rgba(37,99,235,.3)}
.qopt.right{background:var(--green-soft);border-color:rgba(15,157,88,.3)}
.qopt.wrong{background:var(--red-soft);border-color:rgba(220,38,38,.3)}
.qfeed{margin-top:8px;margin-left:28px;font-size:12.2px;color:var(--ink3);background:var(--panel2);
  border-radius:8px;padding:8px 10px;line-height:1.6}
.qfeed b{color:var(--ink)}
.notes-hint{font-size:11.5px;color:var(--muted);margin:-4px 0 10px}

/* score ring */
.ring{position:relative;width:88px;height:88px;flex:none}
.ring svg{transform:rotate(-90deg)}
.ring .rt{position:absolute;inset:0;display:grid;place-items:center;text-align:center}
.ring .rt b{font-size:21px;font-weight:800;letter-spacing:-.02em;line-height:1}
.ring .rt span{font-size:9.5px;color:var(--muted)}

/* ==========================================================================
   listening
   ========================================================================== */
.player{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.player .prow{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.play-btn{width:44px;height:44px;border-radius:50%;border:none;background:var(--accent);color:#fff;
  font-size:15px;cursor:pointer;display:grid;place-items:center;box-shadow:0 6px 16px rgba(37,99,235,.28)}
.play-btn:hover{background:var(--accent2)}
.wave{flex:1;min-width:120px;height:34px;display:flex;align-items:center;gap:3px}
.wave i{display:block;flex:1;min-width:2px;border-radius:2px;background:var(--line);height:8px;transition:.2s}
.wave.playing i{background:var(--accent);animation:wv .9s ease-in-out infinite alternate}
@keyframes wv{to{transform:scaleY(1.8)}}
.tline{display:flex;gap:9px;padding:7px 8px;border-radius:8px;font-size:12.8px;line-height:1.6}
.tline:hover{background:var(--panel2)}
.tline .sp{font-size:10.5px;font-weight:800;letter-spacing:.04em;color:var(--accent2);width:74px;flex:none;padding-top:2px}
.tline .tx{color:var(--ink2);font-family:var(--serif);font-size:14px}
.tline.cur{background:var(--soft)}
.reason-pick{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}

/* ==========================================================================
   review
   ========================================================================== */
.fc{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:30px;text-align:center;min-height:260px;
  display:flex;flex-direction:column;justify-content:center;gap:12px;box-shadow:var(--shadow)}
.fc .front{font-family:var(--serif);font-size:27px;letter-spacing:-.01em}
.fc .meta{font-size:11.5px;color:var(--muted)}
.fc .back{border-top:1px dashed var(--line);padding-top:16px;text-align:left;font-size:14px;color:var(--ink2);line-height:1.7}
.fc-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:6px}
.fc-actions button{height:42px;border-radius:10px;border:1px solid var(--line);background:var(--panel);
  font-size:12.5px;font-weight:700;cursor:pointer;color:var(--ink2)}
.fc-actions button:hover{border-color:var(--accent);color:var(--accent2)}
.fc-actions button[data-g=again]:hover{border-color:var(--red);color:var(--red)}
.fc-actions button[data-g=good]:hover{border-color:var(--green);color:var(--green)}
.bar{height:6px;border-radius:4px;background:var(--line2);overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);border-radius:4px;transition:width .25s}

/* ==========================================================================
   teacher
   ========================================================================== */
.stu-row{display:flex;align-items:center;gap:10px;padding:10px;border-radius:10px;cursor:pointer}
.stu-row:hover{background:var(--panel2)}
.stu-row .avatar{width:28px;height:28px;font-size:11px}
.stu-row .nm{font-size:13px;font-weight:600;min-width:120px}
.stu-row .lv{font-family:var(--mono);font-size:12px;color:var(--accent2);font-weight:700}
.stu-row .mini-stats{margin-left:auto;display:flex;gap:10px;font-size:11px;color:var(--muted)}
.code-box{font-family:var(--mono);font-size:19px;letter-spacing:.18em;font-weight:700;color:var(--accent2);
  background:var(--soft);border-radius:9px;padding:8px 12px;display:inline-block}
.reason-bar{display:flex;flex-direction:column;gap:6px}
.reason-bar .rb{display:flex;align-items:center;gap:8px;font-size:12px}
.reason-bar .rb span{width:96px;color:var(--ink3);flex:none}
.reason-bar .rb i{height:8px;border-radius:4px;background:var(--accent);display:block}
.timeline{display:flex;flex-direction:column;gap:8px}
.tl{display:flex;gap:10px;font-size:12.5px;color:var(--ink2)}
.tl .t{font-family:var(--mono);font-size:11px;color:var(--muted);width:88px;flex:none}

/* ==========================================================================
   responsive
   ========================================================================== */
@media(max-width:1180px){
  /* 两栏太窄时图表会被压小，宁可堆叠成一列 */
  .work-grid{grid-template-columns:1fr}
}
@media(max-width:1080px){
  .split{grid-template-columns:1fr}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:900px){
  .app{grid-template-columns:1fr}
  .side{position:fixed;left:0;top:0;bottom:0;width:236px;z-index:120;transform:translateX(-100%);transition:.2s;height:100dvh}
  .app.nav-open .side{transform:none;box-shadow:var(--shadow-lg)}
  .view{padding:18px 16px 50px}
  .top{padding:0 16px;height:52px}
  .auth{grid-template-columns:1fr}
  .auth-side{display:none}
  .g2,.g3{grid-template-columns:1fr}
  .mm-branches{margin-left:8px;padding-left:14px}
  .mm-node::before{left:-14px;width:12px}
  .split{grid-template-columns:1fr}
}
@media(max-width:560px){
  .g4{grid-template-columns:1fr 1fr}
  .fc-actions{grid-template-columns:1fr 1fr}
  .para{padding-left:0}
  .para .pn{position:static;display:inline-grid;margin-right:6px}
}

/* nav toggle for mobile */
.navtog{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:32px;height:32px;cursor:pointer;color:var(--ink2)}
@media(max-width:900px){.navtog{display:grid;place-items:center}}

/* ==========================================================================
   口语题库（Part 1 / 2 / 3 → 话题 → 题目）
   ========================================================================== */
.bank-card{padding:14px 16px 12px}
.bank-tabs{display:flex;gap:6px;flex-wrap:wrap}
.bank-tabs button{
  border:1px solid var(--line);background:var(--panel2);border-radius:10px;padding:7px 14px;
  cursor:pointer;text-align:left;color:var(--ink2);transition:.14s;display:flex;flex-direction:column;gap:1px
}
.bank-tabs button b{font-size:13px;font-weight:800;letter-spacing:.01em}
.bank-tabs button span{font-size:10.5px;color:var(--muted)}
.bank-tabs button:hover{border-color:rgba(37,99,235,.4)}
.bank-tabs button.on{
  border-color:var(--accent);background:var(--soft);color:var(--accent2);
  box-shadow:0 0 0 3px rgba(37,99,235,.09)
}
.bank-tabs button.on span{color:var(--accent2);opacity:.75}
.bank-bar{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-top:12px}
.bank-bar>.row{flex-wrap:wrap}
.bank-hint{font-size:12px;color:var(--ink2)}
.bank-hint b{color:var(--ink);font-weight:800}
.bank-topics{display:flex;flex-wrap:wrap;gap:5px;margin-top:11px;max-height:88px;overflow:auto}
.topic-chip{
  border:1px solid var(--line);background:var(--panel);border-radius:20px;padding:3px 10px;
  font-size:11.5px;color:var(--ink3);cursor:pointer;white-space:nowrap
}
.topic-chip i{font-style:normal;font-size:10px;color:var(--muted);margin-left:3px}
.topic-chip:hover{border-color:var(--accent);color:var(--accent2)}
.topic-chip.on{background:var(--accent);border-color:var(--accent);color:#fff}
.topic-chip.on i{color:rgba(255,255,255,.8)}
.bank-list{
  margin-top:10px;border:1px solid var(--line);border-radius:11px;overflow:auto;
  max-height:min(38vh,340px);background:var(--panel)
}
.bq{
  display:flex;gap:10px;align-items:flex-start;width:100%;text-align:left;border:none;
  border-bottom:1px solid var(--line2);background:none;padding:9px 11px;cursor:pointer;color:var(--ink2)
}
.bq:last-child{border-bottom:0}
.bq:hover{background:var(--panel2)}
.bq.on{background:var(--soft)}
.bq.on .bq-q{color:var(--accent2);font-weight:700}
.bq-n{
  flex:none;width:20px;height:20px;border-radius:6px;background:var(--line2);color:var(--ink3);
  font-size:10.5px;font-weight:800;display:grid;place-items:center;margin-top:2px
}
.bq.on .bq-n{background:var(--accent);color:#fff}
.bq-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.bq-q{font-size:12.8px;line-height:1.5;font-family:var(--serif);font-size:13.4px;color:var(--ink)}
.bq-b{font-size:11px;color:var(--muted);line-height:1.45;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.bq-meta{flex:none;display:flex;gap:4px;align-items:center;font-size:10.5px;color:var(--muted);white-space:nowrap;padding-top:3px}
.bdg{font-size:9.5px;font-weight:800;letter-spacing:.03em;border-radius:5px;padding:1px 5px}
.bdg.new{background:var(--green-soft);color:var(--green)}
.bdg.core{background:var(--violet-soft);color:var(--violet)}
.bank-foot{display:flex;align-items:center;gap:12px;margin-top:9px;font-size:11.5px}
.bank-card.collapsed .bank-topics,.bank-card.collapsed .bank-list{display:none}
.bank-card.collapsed .bank-bar{margin-top:8px}
.bank-custom{margin-top:10px;border-top:1px dashed var(--line);padding-top:10px}

/* 写作题库：题目行以中文题意为主，英文题干为辅 */
.bq-q.zh{font-family:var(--sans);font-size:13px;font-weight:700;letter-spacing:0}
.bq-q.zh + .bq-b{font-family:var(--serif);font-size:12.2px;color:var(--ink3)}
/* 写作有 20 个话题：全部铺开，别出现被切一半的内部滚动 */
#wTopics{max-height:none;overflow:visible}

/* 写作：水平 / 题型 / 立场 */
.w-tools{display:grid;grid-template-columns:120px 150px 1fr auto;gap:12px;align-items:end;margin-top:12px}
.w-tools .seg{max-width:180px}
.wt-save{font-size:11.5px;text-align:right;padding-bottom:8px;white-space:nowrap}
@media(max-width:900px){
  .w-tools{grid-template-columns:1fr 1fr}
  .w-tools .field:nth-child(3){grid-column:1/-1}
  .wt-save{display:none}
  /* 题型标签在窄屏改成一行横滑，别让中文一字一行地折 */
  #wBankKind{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px}
  #wBankKind button{flex:0 0 auto;padding:6px 12px}
  #wBankKind button b,#wBankKind button span{white-space:nowrap}
  .bank-foot{flex-wrap:wrap;gap:8px}
  .bank-foot .linkbtn,#wCount{white-space:nowrap}
}

/* 考试卡片 */
.exam-card{
  border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:var(--panel2);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.4)
}
html[data-theme="dark"] .exam-card{box-shadow:none;background:var(--panel2)}
.exam-card .ec-top{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:9px}
.exam-card .ec-prompt{
  font-family:var(--serif);font-size:17.5px;line-height:1.45;color:var(--ink);font-weight:600;letter-spacing:-.01em
}
.exam-card .ec-prompt.q{font-size:16.5px}
.exam-card .ec-label{font-size:10.5px;font-weight:800;letter-spacing:.06em;color:var(--muted);margin:10px 0 4px}
.exam-card .ec-bullets{margin:0;padding-left:18px}
.exam-card .ec-bullets li{font-size:13px;line-height:1.7;color:var(--ink2);font-family:var(--serif)}
.exam-card .ec-foot{
  margin-top:11px;padding-top:9px;border-top:1px dashed var(--line);font-size:11.5px;color:var(--muted);line-height:1.6
}
.exam-card .ec-foot i{color:var(--ink3)}
.exam-card .ec-f3{margin-top:10px;padding-top:9px;border-top:1px dashed var(--line)}
.exam-card .ec-f3 .ec-label{margin:0 0 6px}
.ec-f3q{
  display:block;width:100%;text-align:left;border:1px solid var(--line);background:var(--panel);
  border-radius:8px;padding:6px 9px;font-size:12px;line-height:1.5;color:var(--ink2);cursor:pointer;
  font-family:var(--serif);margin-bottom:5px
}
.ec-f3q:hover{border-color:var(--accent);color:var(--accent2);background:var(--soft)}
.exam-card.empty-exam .ec-empty{padding:18px 0 6px;text-align:center}
.exam-card.empty-exam .ec-empty b{display:block;color:var(--ink2);font-size:13px;margin-bottom:3px}
.exam-card.empty-exam .ec-empty span{font-size:11.5px;color:var(--muted)}

/* ==========================================================================
   词典：查词抽屉
   ========================================================================== */
.dict-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(470px,100%);z-index:170;
  background:var(--panel);border-left:1px solid var(--line);
  box-shadow:-18px 0 50px rgba(15,23,42,.18);
  display:flex;flex-direction:column;visibility:hidden;transform:translateX(102%);
  transition:transform .22s cubic-bezier(.4,0,.2,1),visibility .22s
}
body.dictopen .dict-drawer{transform:none;visibility:visible}
.dict-top{display:flex;gap:8px;align-items:center;padding:13px 14px 10px;border-bottom:1px solid var(--line);flex:none}
.dict-search{display:flex;gap:6px;flex:1;min-width:0}
.dict-search input{
  flex:1;min-width:0;height:36px;border:1px solid var(--line);border-radius:9px;
  padding:0 11px;background:var(--panel2);color:var(--ink);font-size:13.5px;font-weight:600
}
.dict-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.dict-search .btn{height:36px;padding:0 14px;border-radius:9px}
.dict-tabs{display:flex;gap:4px;overflow-x:auto;padding:9px 12px 0;flex:none;scrollbar-width:none}
.dict-tabs::-webkit-scrollbar{display:none}
.dict-tabs button{
  border:1px solid var(--line);border-bottom-color:transparent;background:var(--panel2);
  color:var(--ink3);border-radius:8px 8px 0 0;padding:6px 11px;font-size:11.5px;font-weight:700;
  cursor:pointer;white-space:nowrap;max-width:180px;overflow:hidden;text-overflow:ellipsis
}
.dict-tabs button.on{background:var(--soft);border-color:rgba(37,99,235,.35);color:var(--accent2)}
.dict-tabs:empty{display:none}
.dict-body{flex:1;overflow:auto;padding:12px 16px 18px;font-size:13px;line-height:1.72;color:var(--ink2);-webkit-overflow-scrolling:touch}
.dict-foot{
  display:flex;gap:8px;align-items:center;padding:10px 14px;border-top:1px solid var(--line);
  flex:none;background:var(--panel2)
}
.dict-loading{display:flex;align-items:center;gap:10px;justify-content:center;padding:40px 0}
.dict-loading .spinner{width:20px;height:20px;border-width:2px}
.dt-panel{min-height:40px}
.dt-wordhead{display:flex;gap:9px;align-items:baseline;margin:0 0 10px;padding-bottom:9px;border-bottom:1px solid var(--line2)}
.dt-wordhead b{font-size:20px;font-family:var(--serif);color:var(--ink);letter-spacing:-.01em}
.dt-entry .dt-head{display:flex;gap:8px;align-items:baseline;flex-wrap:wrap;margin-bottom:8px}
.dt-entry .dt-head b{font-size:17px;letter-spacing:-.01em;color:var(--ink);font-family:var(--serif)}
.dt-phon{font-family:var(--mono);font-size:12px;color:var(--muted)}
.dt-sense{margin:7px 0}
.dt-sense i{font-style:normal;font-weight:700;font-size:11px;color:var(--violet);background:var(--violet-soft);
  border-radius:5px;padding:1px 6px;margin-right:6px}
.dt-sense ol{margin:4px 0 0;padding-left:20px}
.dt-sense ol li{margin:3px 0}
.dt-en{color:var(--ink2)}
.dt-ex{display:block;color:var(--ink3);font-size:12.2px;font-family:var(--serif);margin-top:2px}
.dt-exs{margin:8px 0;display:flex;flex-direction:column;gap:6px}
.dt-exs>div{background:var(--panel2);border-radius:8px;padding:7px 10px;border:1px solid var(--line2)}
.dt-row{display:flex;flex-wrap:wrap;gap:5px;align-items:center;margin:9px 0;font-size:12px}
.dt-row>span:first-child{color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.04em;margin-right:2px}
.dt-tag{
  border:1px solid var(--line);background:var(--panel2);color:var(--ink2);border-radius:20px;
  padding:2px 9px;font-size:11.5px
}
.dt-tag.click{cursor:pointer}
.dt-tag.click:hover{border-color:var(--accent);color:var(--accent2);background:var(--soft)}
.dt-note{margin:9px 0;font-size:12.3px;background:var(--soft);color:var(--accent2);border-radius:8px;padding:7px 10px}
.dt-note b{display:block;font-size:10.5px;letter-spacing:.06em;margin-bottom:2px;opacity:.8}
.dt-src{margin-top:10px;font-size:11px;color:var(--muted)}
.dt-miss{border:1px dashed var(--line);border-radius:10px;padding:12px 14px;margin-bottom:10px;background:var(--panel2)}
.dt-miss b{display:block;color:var(--ink);margin-bottom:4px}
.dt-miss p{margin:0 0 8px}
.dt-empty{padding:26px 6px;text-align:center}
.dt-empty b{display:block;color:var(--ink2);margin-bottom:5px;font-size:13.5px}
.dt-empty p{font-size:12.3px;color:var(--muted);max-width:300px;margin:0 auto 12px}
.dt-ctx{margin-top:14px;border-top:1px dashed var(--line);padding-top:11px;font-size:12.3px}
.dt-ctx b{font-size:10.5px;letter-spacing:.06em;color:var(--muted);display:block;margin-bottom:4px}
.dt-ctx div{font-family:var(--serif);font-size:13.5px;line-height:1.75;margin-bottom:8px}
.dt-hist b{display:block;font-size:11px;letter-spacing:.05em;color:var(--muted);margin-bottom:8px}
/* 词典正文（mdx 里的 HTML）排版收敛 */
.dt-panel h1,.dt-panel h2,.dt-panel h3,.dt-panel h4{font-size:14px;margin:12px 0 6px;color:var(--ink)}
.dt-panel p{margin:6px 0}
.dt-panel ul,.dt-panel ol{margin:6px 0;padding-left:20px}
.dt-panel li{margin:2px 0}
.dt-panel table{width:100%;border-collapse:collapse;margin:8px 0;font-size:12.2px}
.dt-panel td,.dt-panel th{border-bottom:1px solid var(--line2);padding:4px 6px;vertical-align:top}
.dt-panel a{color:var(--accent2)}
.dt-panel blockquote{margin:8px 0;padding:6px 10px;border-left:3px solid var(--line);color:var(--ink3)}
html[data-theme="dark"] .dt-panel font[color]{color:inherit}
html[data-theme="dark"] .dt-panel img{filter:invert(1) hue-rotate(180deg)}
.dict-float{
  position:absolute;z-index:165;border:none;border-radius:8px;background:var(--ink);color:var(--panel);
  font-size:11.5px;font-weight:700;padding:6px 11px;cursor:pointer;opacity:0;transform:translateY(-4px);
  transition:.14s;box-shadow:var(--shadow-lg)
}
.dict-float.on{opacity:1;transform:none}
html[data-theme="dark"] .dict-float{background:var(--accent);color:#fff}

/* ==========================================================================
   词典页
   ========================================================================== */
.dropzone{
  border:1.5px dashed var(--line);border-radius:12px;padding:22px 16px;text-align:center;cursor:pointer;
  background:var(--panel2);transition:.15s;margin-top:12px
}
.dropzone b{display:block;font-size:13px;color:var(--ink2);margin-bottom:3px}
.dropzone:hover,.dropzone.on{border-color:var(--accent);background:var(--soft)}
.dsrc{
  display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;
  border:1px solid var(--line);border-radius:11px;padding:10px 12px;background:var(--panel2)
}
.dsrc+.dsrc{margin-top:8px}
.dsrc-name{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.dsrc-name b{font-size:13px;color:var(--ink)}
.dsrc-meta{font-size:11.5px;color:var(--muted);margin-top:3px;font-family:var(--mono)}
.dsrc-ctl{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.dsrc-pri{display:flex;align-items:center;gap:4px;font-size:10.5px;color:var(--muted)}
.dsrc-pri input{width:52px;height:26px;font-size:11.5px;padding:0 5px;text-align:center}
.checkline{display:flex;gap:7px;align-items:center;font-size:12.3px;color:var(--ink2);cursor:pointer}
.dsrc-info{display:flex;flex-direction:column;gap:9px;margin-top:10px}
.dsrc-info>div{display:flex;flex-direction:column;gap:1px;padding-left:10px;border-left:2px solid var(--line)}
.dsrc-info b{font-size:12.5px;color:var(--ink)}
.dsrc-info span{font-size:11.5px;color:var(--muted);line-height:1.5}
/* 开关 */
.switch{position:relative;display:inline-block;width:34px;height:19px;flex:none;cursor:pointer}
.switch input{position:absolute;opacity:0;width:0;height:0}
.switch i{position:absolute;inset:0;background:var(--line);border-radius:20px;transition:.16s}
.switch i::after{content:"";position:absolute;width:15px;height:15px;border-radius:50%;background:#fff;
  top:2px;left:2px;transition:.16s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch input:checked+i{background:var(--accent)}
.switch input:checked+i::after{transform:translateX(15px)}
@media(max-width:900px){
  .dict-drawer{width:100%}
  .dsrc{align-items:flex-start}
  .bank-tabs button{flex:1;padding:6px 10px}
  .bank-bar .row{width:100%}
  #sSeason{flex:1;min-width:0;width:auto !important}
  #sSearch{flex:1.2;min-width:0;width:auto !important}
  .bank-list{max-height:min(46vh,360px)}
}
@media(max-width:640px){
  .bank-bar .row{gap:6px}
  #sSeason{flex:1 1 100%;width:100% !important}
  #sSearch{flex:1 1 auto;min-width:110px}
  #sRandom{flex:0 0 auto}
}

/* ==========================================================================
   写作：Task 1 / Task 2 切换 + 我的句子 + 图表
   ========================================================================== */
.sep-tabs{display:flex;gap:6px;margin-bottom:10px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.sep-tabs button{
  flex:1;border:1px solid var(--line);background:var(--panel2);border-radius:10px;padding:7px 12px;
  cursor:pointer;text-align:left;display:flex;flex-direction:column;gap:1px;color:var(--ink2);transition:.14s
}
.sep-tabs button b{font-size:13px;font-weight:800}
.sep-tabs button span{font-size:10.5px;color:var(--muted)}
.sep-tabs button:hover{border-color:rgba(37,99,235,.4)}
.sep-tabs button.on{border-color:var(--accent);background:var(--soft);color:var(--accent2);box-shadow:0 0 0 3px rgba(37,99,235,.09)}
.sep-tabs button.on span{color:var(--accent2);opacity:.75}

.myinput .mi-head{display:flex;gap:8px;align-items:baseline;flex-wrap:wrap;margin-bottom:6px}
.myinput .mi-head b{font-size:13px}
.myinput textarea{min-height:74px;font-size:12.8px;line-height:1.65;font-family:var(--sans)}
.myinput .mi-foot{margin-top:6px;font-size:11px}

/* 图表 */
.ec-figure,.fig-wrap{margin:10px 0 4px}
.fig-wrap{border:1px solid var(--line);border-radius:11px;padding:10px 12px;background:var(--panel)}
.fig-svg{display:block;width:236px;max-width:100%;height:auto;margin:0 auto}
.fig-svg.wide{width:660px;max-width:100%}
.fig-grid{stroke:var(--line);stroke-width:1;stroke-dasharray:3 4}
.fig-tick{fill:var(--muted);font-size:11px;font-family:var(--sans)}
.fig-wrap.pie{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.fig-wrap.pie .fig-svg{flex:none}
.fig-wrap.pie .fig-legend{flex-direction:column;gap:7px;margin:0;min-width:170px}
.fig-legend{list-style:none;display:flex;flex-wrap:wrap;gap:6px 14px;margin:10px 0 0;padding:0;font-size:11.5px;color:var(--ink3)}
.fig-legend li{display:flex;gap:5px;align-items:center}
.fig-legend i{width:9px;height:9px;border-radius:2px;display:inline-block}
.fig-legend b{color:var(--ink2);font-weight:700}
.tbl-chart{width:100%;border-collapse:collapse;font-size:12.4px;font-family:var(--sans)}
.tbl-chart th,.tbl-chart td{border-bottom:1px solid var(--line2);padding:7px 9px;text-align:left}
.tbl-chart thead th{background:var(--panel2);font-weight:800;color:var(--ink2);font-size:11.5px}
.tbl-chart td{color:var(--ink2);font-variant-numeric:tabular-nums}
.tbl-chart tr:last-child td{border-bottom:0}
/* 流程图 / 地图题：只用低透明度填充 + 主题色文字，深浅色都不会糊成一片 */
.fig-node{fill:rgba(37,99,235,.07);stroke:#2563eb;stroke-width:1.2}
.fig-node-num{fill:rgba(37,99,235,.16);stroke:none}
.fig-node-t{fill:var(--ink2);font-size:11px;font-weight:700}
.fig-node-l{fill:var(--ink2);font-size:12.5px;font-weight:600}
.fig-arrow{stroke:var(--muted);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;fill:none}
.fig-arrow.dashed{stroke-dasharray:4 4}
.fig-cap{margin-top:6px;text-align:center;font-size:11.5px;color:var(--ink3)}
.fig-map-frame{fill:none;stroke:var(--line);stroke-width:1.4}
.fig-map-t{fill:var(--ink3);font-size:11.5px;font-weight:700}
.fig-map-l{fill:var(--ink2);font-size:10.5px;font-weight:600}
/* 通用模板里的句型档位 */
.gen-tier{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 12px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.gen-tier .seg button{padding:4px 10px;font-size:11.5px}

@media(max-width:900px){
  .sep-tabs button span{display:none}
}