:root{
  --navy:#12325c; --navy2:#24518f; --blue:#3a7bd5; --blue-bg:#eef4fd;
  --teal:#0f6f66; --teal-bg:#e9f5f3;
  --amber:#b8791f; --amber-bg:#fdf4e3;
  --purple:#6b46a8; --purple-bg:#f3eefb;
  --ink:#26303f; --muted:#6b7789; --line:#e2e7ef; --soft:#f6f8fb;
  --green:#157a4a; --red:#b3452f;
  --radius:10px; --shadow:0 1px 3px rgba(19,42,74,.07), 0 6px 20px rgba(19,42,74,.05);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:#f2f5f9; color:var(--ink);
  font-family:'Microsoft YaHei','PingFang SC','Hiragino Sans GB','Source Han Sans SC',sans-serif;
  font-size:14px; line-height:1.7;
}
h1,h2,h3,h4{margin:0}
button{font-family:inherit;cursor:pointer}

/* ---------- 顶栏 ---------- */
.topbar{
  background:linear-gradient(120deg,#0f2c50,#1b4478); color:#fff;
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 22px; position:sticky; top:0; z-index:40;
}
.brand{display:flex; align-items:center; gap:12px}
.logo{
  width:38px;height:38px;border-radius:10px;background:#ffd68a;color:#12325c;
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;
}
.brand-name{font-size:17px;font-weight:800;letter-spacing:2px}
.brand-sub{font-size:11.5px;color:#b8cbe8}
.topbar-right{display:flex;align-items:center;gap:14px}
.model-pick{display:flex;align-items:center;gap:6px;font-size:12px;color:#c9daf2}
.model-pick select{
  background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.25);
  border-radius:6px;padding:5px 8px;font-size:12px;max-width:190px;
}
.model-pick select option{color:#26303f}
.auth-box{display:flex;align-items:center;gap:8px;font-size:12.5px}
.auth-box .who{color:#cfe0f7;max-width:190px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.btn{
  border:1px solid var(--line); background:#fff; color:var(--ink);
  border-radius:8px; padding:8px 16px; font-size:13.5px; transition:.15s;
}
.btn:hover{border-color:var(--navy2); color:var(--navy2)}
.btn.primary{background:var(--navy); border-color:var(--navy); color:#fff; font-weight:600}
.btn.primary:hover{background:var(--navy2)}
.btn.ghost{background:transparent}
.btn.small{padding:5px 12px; font-size:12.5px; border-radius:7px}
.btn.full{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.tiny{padding:3px 9px; font-size:12px; border-radius:6px}

/* ---------- Tabs ---------- */
.tabs{display:flex; gap:4px; background:#fff; padding:0 18px; border-bottom:1px solid var(--line); position:sticky; top:62px; z-index:30}
.tab{
  border:none; background:none; padding:12px 16px; font-size:14px; color:var(--muted);
  border-bottom:2px solid transparent;
}
.tab.active{color:var(--navy); font-weight:700; border-bottom-color:var(--navy)}
.tab:hover{color:var(--navy2)}

main{max-width:1240px; margin:0 auto; padding:20px 18px 60px}
.view{display:none}
.view.active{display:block}

.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.panel-title{font-size:15.5px;font-weight:800;color:var(--navy)}

/* ---------- 表单 ---------- */
.wb-grid{display:grid;grid-template-columns:360px minmax(0,1fr);gap:18px;align-items:start}
.field{display:block;margin-bottom:14px}
.field-label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:5px;font-weight:600}
.field textarea,.field input,.field select,.mpane input{
  width:100%; border:1px solid var(--line); border-radius:8px; padding:8px 10px;
  font-size:13.5px; font-family:inherit; background:#fff; color:var(--ink);
}
.field textarea:focus,.field input:focus,.field select:focus,.mpane input:focus{outline:2px solid #cfe0f8;border-color:var(--navy2)}
.field-hint{font-size:11.5px;color:var(--muted);margin:5px 0 0}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.seg{display:flex;gap:6px}
.seg-btn{
  flex:1;border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 6px;
  font-size:12.5px;color:var(--muted);
}
.seg-btn.active{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:600}
.stage-checks{display:flex;flex-direction:column;gap:6px}
.stage-chk{
  display:flex;align-items:flex-start;gap:8px;border:1px solid var(--line);border-radius:8px;
  padding:7px 9px;cursor:pointer;background:#fff;font-size:12.5px;
}
.stage-chk.on{border-color:var(--navy2);background:var(--blue-bg)}
.stage-chk input{margin-top:3px}
.stage-chk .sc-t{font-weight:700;color:var(--navy)}
.stage-chk .sc-d{font-size:11.5px;color:var(--muted)}
.btn-row{display:flex;gap:8px;margin-top:6px}
.form-note{font-size:12px;color:var(--amber);margin:8px 0 0;min-height:18px}

/* ---------- 流水线 ---------- */
.pipe-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.pipe-progress{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}
.bar{width:120px;height:5px;background:var(--line);border-radius:4px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--navy2);transition:.3s}
.pipeline{display:flex;flex-direction:column;gap:10px;max-height:calc(100vh - 210px);overflow:auto;padding-right:4px}
.step-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.step-card.running{border-color:var(--blue);box-shadow:0 0 0 3px rgba(58,123,213,.10)}
.step-card.done{border-color:#cfe3d8}
.step-card.error{border-color:#e9c4bb}
.step-head{display:flex;align-items:center;gap:10px;padding:11px 13px;background:var(--soft);cursor:pointer}
.step-card:nth-child(1) .step-head{background:var(--blue-bg)}
.step-emoji{font-size:20px}
.step-meta{flex:1;min-width:0}
.step-title{font-size:13.5px;font-weight:700;color:var(--navy)}
.step-sub{font-size:11.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.step-badge{font-size:11px;padding:2px 8px;border-radius:20px;background:#e7ebf2;color:var(--muted)}
.step-badge.wait{background:#eef1f6;color:var(--muted)}
.step-badge.run{background:#e4efff;color:var(--navy2);font-weight:700}
.step-badge.ok{background:#e2f2ea;color:var(--green);font-weight:700}
.step-badge.err{background:#fbeae6;color:var(--red);font-weight:700}
.step-ops{display:flex;gap:6px}
.step-body{display:none;border-top:1px solid var(--line);padding:14px}
.step-card.open .step-body{display:block}
.step-out{font-size:13.5px;line-height:1.75}
.step-err{background:#fbeae6;border-left:3px solid var(--red);padding:8px 11px;font-size:12.5px;color:#8d3a26;border-radius:0 6px 6px 0}
.think{margin:0 0 10px;background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:6px 10px}
.think summary{cursor:pointer;font-size:12px;color:var(--muted)}
.think pre{margin:8px 0 0;max-height:240px;overflow:auto;font-size:11.5px;white-space:pre-wrap;color:#5a6577}

/* 交互区（考官 / 陪练） */
.interact{border-top:1px dashed var(--line);margin-top:12px;padding-top:12px}
.ia-log{max-height:320px;overflow:auto;background:var(--soft);border-radius:8px;padding:10px 12px;font-size:13px}
.ia-msg{margin-bottom:9px}
.ia-msg.ai{color:var(--navy)}
.ia-msg.me{color:var(--teal)}
.ia-msg b{display:block;font-size:11.5px;color:var(--muted);margin-bottom:2px;font-weight:600}
.ia-input{display:flex;gap:8px;margin-top:8px}
.ia-input textarea{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-family:inherit;font-size:13px;resize:vertical}

/* ---------- 专家团 ---------- */
.corps-intro{margin-bottom:14px}
.corps-intro p{font-size:13px;color:var(--muted);margin:6px 0 0}
.corps-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.corps-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}
.corps-card.s1{border-top:4px solid var(--blue)}
.corps-card.s2{border-top:4px solid var(--teal)}
.corps-card.s3{border-top:4px solid var(--amber)}
.corps-card.s4{border-top:4px solid var(--purple)}
.cc-head{display:flex;gap:10px;align-items:flex-start}
.cc-emoji{font-size:24px}
.cc-name{font-size:14.5px;font-weight:800;color:var(--navy)}
.cc-code{font-size:11.5px;color:var(--muted)}
.cc-stage{font-size:11px;padding:1px 8px;border-radius:20px;background:var(--soft);color:var(--muted);display:inline-block;margin-top:4px}
.cc-duty{font-size:12.5px;color:#3f4c60;margin:9px 0 10px}
.tags{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:8px}
.tag{font-size:11px;padding:2px 8px;border-radius:20px;background:var(--blue-bg);color:var(--navy2)}
.tag.skill{background:var(--amber-bg);color:var(--amber);font-weight:700}
.cc-deliver{font-size:12px;color:var(--teal);background:var(--teal-bg);border-radius:6px;padding:5px 9px;display:inline-block}
.cc-prompt{
  display:none;margin-top:10px;background:var(--soft);border:1px dashed #b9c8de;border-radius:8px;
  padding:10px;font-size:11.5px;line-height:1.7;white-space:pre-wrap;max-height:280px;overflow:auto;
  font-family:'Cascadia Mono',Consolas,monospace;
}
.corps-card.open .cc-prompt{display:block}

/* ---------- 教程 ---------- */
.tut-bar,.lib-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:10px;flex-wrap:wrap}
.tut-actions,.lib-actions{display:flex;gap:8px}
.tutorial{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 30px;box-shadow:var(--shadow);min-height:300px}
.lib-note{font-size:12.5px;color:var(--muted);margin:0 0 12px}
.library{display:flex;flex-direction:column;gap:10px}
.lib-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:13px 15px;display:flex;align-items:center;gap:12px}
.lib-main{flex:1;min-width:0}
.lib-topic{font-size:14px;font-weight:700;color:var(--navy);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lib-meta{font-size:12px;color:var(--muted)}

/* ---------- Markdown 渲染 ---------- */
.md h1{font-size:24px;color:var(--navy);margin:22px 0 10px}
.md h2{font-size:18px;color:var(--navy);margin:22px 0 8px;padding-bottom:5px;border-bottom:1px solid var(--line)}
.md h3{font-size:15.5px;color:var(--navy2);margin:16px 0 6px}
.md h4{font-size:14px;color:var(--ink);margin:12px 0 4px}
.md p{margin:8px 0}
.md ul,.md ol{padding-left:22px;margin:8px 0}
.md li{margin:4px 0}
.md strong{color:#16233a}
.md code{background:var(--soft);padding:1px 5px;border-radius:4px;font-size:12.5px}
.md pre{background:#f7f9fc;border:1px solid var(--line);border-radius:8px;padding:10px 12px;overflow:auto}
.md pre code{background:none;padding:0}
.md blockquote{border-left:3px solid var(--navy2);margin:10px 0;padding:4px 0 4px 12px;color:#41506a;background:var(--soft);border-radius:0 6px 6px 0}
.md table{border-collapse:collapse;width:100%;margin:10px 0;font-size:13px}
.md th{background:var(--navy2);color:#fff;text-align:left;padding:7px 9px}
.md td{border-bottom:1px solid var(--line);padding:6px 9px}
.md hr{border:none;border-top:1px solid var(--line);margin:18px 0}

/* ---------- 空状态 ---------- */
.empty-state{text-align:center;color:var(--muted);padding:56px 20px}
.empty-emoji{font-size:42px;margin-bottom:10px}
.empty-state p{font-size:13.5px;line-height:1.9}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);
  background:#26303f;color:#fff;padding:10px 18px;border-radius:8px;font-size:13px;
  opacity:0;pointer-events:none;transition:.22s;z-index:100;max-width:80vw;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 登录弹窗 ---------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(20,32,52,.5);display:none;align-items:center;justify-content:center;z-index:90;
}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:12px;width:400px;max-width:92vw;padding:20px;box-shadow:0 20px 50px rgba(0,0,0,.2)}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.modal-head h3{font-size:16px;color:var(--navy)}
.modal-close{border:none;background:none;font-size:22px;color:var(--muted);line-height:1}
.modal-tabs{display:flex;gap:4px;margin-bottom:14px;border-bottom:1px solid var(--line)}
.mtab{border:none;background:none;padding:7px 10px;font-size:12.5px;color:var(--muted);border-bottom:2px solid transparent}
.mtab.active{color:var(--navy);font-weight:700;border-bottom-color:var(--navy)}
.mpane{display:none;flex-direction:column;gap:9px}
.mpane.active{display:flex}
.otp-row{display:flex;gap:8px}
.otp-row input{flex:1}
.modal-err{color:var(--red);font-size:12.5px;min-height:18px;margin:8px 0 0}
.modal-tip{font-size:11.5px;color:var(--muted);margin:4px 0 0}

@media (max-width:980px){
  .wb-grid{grid-template-columns:1fr}
  .pipeline{max-height:none}
}

/* ---------- 打印（教程导出 PDF） ---------- */
@media print{
  body{background:#fff}
  .topbar,.tabs,.tut-bar,.empty-state,.toast{display:none !important}
  main{padding:0;max-width:none}
  .tutorial{border:none;box-shadow:none;padding:0}
  .md h1{font-size:22pt}
  .md h2{font-size:15pt}
  .md h3{font-size:13pt}
  .md p,.md li{font-size:10.5pt}
}