:root{
  --as-primary:#1967d2;
  --as-primary-dark:#114b9e;
  --as-bg:#edf3fb;
  --as-panel:#ffffff;
  --as-line:#d6e0ee;
  --as-text:#132033;
  --as-muted:#607089;
  --as-danger:#b91c1c;
  --as-warning:#b45309;
  --as-success:#047857;
  --as-purple:#6d28d9;
  --as-shadow:0 8px 24px rgba(15,23,42,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;font-family:"Segoe UI",Arial,sans-serif;background:var(--as-bg);color:var(--as-text)}
body.diagram-open{overflow:hidden}
a{color:var(--as-primary-dark)}
.course-header{min-height:64px;background:var(--as-primary);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 18px;box-shadow:0 2px 10px rgba(0,0,0,.18);position:sticky;top:0;z-index:30}
.header-left,.header-right{display:flex;align-items:center;gap:12px;min-width:0}.header-right{justify-content:flex-end}
.portal-link{color:#fff;text-decoration:none;background:#0f3f86;border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:7px 13px;font-weight:800;font-size:13px;white-space:nowrap}
.course-title{font-weight:900;font-size:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand{font-size:12px;font-weight:800;white-space:nowrap}
.meu-mbb-hook:empty{display:none}.meu-mbb-hook{display:flex;align-items:center;gap:8px;min-width:0}
.menu-toggle{display:none;border:1px solid rgba(255,255,255,.4);background:#0f3f86;color:#fff;border-radius:10px;padding:8px 11px;font:inherit;font-weight:800;cursor:pointer}
.course-shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:calc(100vh - 64px);transition:grid-template-columns .18s ease}
.course-nav{background:#fff;border-right:1px solid var(--as-line);padding:12px 10px 16px;position:sticky;top:64px;height:calc(100vh - 64px);overflow:auto}
.desktop-nav-collapse{width:100%;border:1px solid #cbd8e8;background:#f8fbff;color:#23466f;border-radius:10px;padding:8px 10px;margin-bottom:10px;font:inherit;font-size:12px;font-weight:900;cursor:pointer}.desktop-nav-collapse:hover{background:#eef5ff}
body.nav-collapsed .course-shell{grid-template-columns:58px minmax(0,1fr)}
body.nav-collapsed .course-nav{padding:10px 7px;overflow:hidden}
body.nav-collapsed .desktop-nav-collapse{height:42px;padding:0;font-size:18px}
body.nav-collapsed .nav-project,body.nav-collapsed .nav-group-title,body.nav-collapsed .stage-link{display:none}
.nav-project{background:#eef5ff;border:1px solid #c9dcfb;border-radius:14px;padding:13px;margin-bottom:14px}.nav-project strong{display:block;color:var(--as-primary-dark);margin-bottom:4px}.nav-project span{font-size:12px;color:#42536a;line-height:1.4}
.nav-group-title{margin:15px 8px 7px;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--as-muted);font-weight:900}
.stage-link{display:flex;gap:9px;align-items:flex-start;text-decoration:none;color:#1f2937;border-radius:10px;padding:9px 10px;margin:3px 0;font-size:13px;font-weight:750;line-height:1.25}
.stage-link:hover{background:#eef5ff}.stage-link.active{background:var(--as-primary);color:#fff;box-shadow:0 3px 10px rgba(25,103,210,.28)}
.stage-number{display:inline-flex;align-items:center;justify-content:center;min-width:25px;height:25px;border-radius:999px;background:#e8eff8;color:#24405f;font-size:11px;font-weight:900}.stage-link.active .stage-number{background:#fff;color:var(--as-primary-dark)}
.course-main{min-width:0;padding:22px}.content-wrap{max-width:1120px;margin:0 auto}
.stage-progress{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--as-muted);font-size:13px;font-weight:800;margin-bottom:8px}.progress-track{height:7px;background:#dce6f2;border-radius:999px;overflow:hidden;margin-bottom:18px}.progress-bar{height:100%;background:var(--as-primary);width:0}
.hero{background:linear-gradient(135deg,#eaf2ff,#fff);border:1px solid #bfd6f8;border-radius:20px;padding:28px;margin-bottom:18px;box-shadow:var(--as-shadow)}.kicker{display:inline-block;background:#dbeafe;color:#0f3f86;border:1px solid #bfdbfe;border-radius:999px;padding:5px 10px;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}.hero h1,.hero h2{margin:0 0 10px;color:var(--as-primary-dark);font-size:clamp(28px,4vw,46px);line-height:1.08;letter-spacing:-.6px}.hero p{margin:0;max-width:900px;font-size:17px;line-height:1.65}
.chapter{background:#fff;border:1px solid var(--as-line);border-radius:18px;padding:25px;box-shadow:var(--as-shadow);line-height:1.68;margin-bottom:18px}.chapter h2{color:var(--as-primary-dark);font-size:25px;margin:30px 0 10px}.chapter h2:first-child{margin-top:0}.chapter h3{color:#163f75;font-size:19px;margin:22px 0 8px}.chapter p{margin:10px 0}.chapter ul,.chapter ol{margin:10px 0 12px 26px}.chapter li{margin:6px 0}
.card{border:1px solid var(--as-line);border-radius:14px;padding:16px;margin:15px 0;background:#fff}.card h3{margin-top:0}.context-card{border-left:5px solid var(--as-primary);background:#f5f9ff}.problem-card{border-left:5px solid #dc2626;background:#fff3f3}.question-card{border-left:5px solid #7c3aed;background:#f7f4ff}.tool-card{border-left:5px solid #0891b2;background:#effcff}.practice-card{border-left:5px solid #d97706;background:#fff9ed}.evidence-card{border-left:5px solid #059669;background:#effcf6}.next-card{border-left:5px solid #2563eb;background:#eff6ff}.return-card{border-left:5px solid #64748b;background:#f8fafc}.warning-card{border-left:5px solid #eab308;background:#fffbea}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:15px 0}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:15px 0}
.pill{display:inline-flex;align-items:center;border-radius:999px;padding:4px 9px;font-size:11px;font-weight:900;background:#eef5ff;color:#164a88;border:1px solid #cfe0f7;margin:2px 4px 2px 0}.pill-essential{background:#ecfdf5;color:#047857;border-color:#a7f3d0}.pill-deep{background:#fff7ed;color:#c2410c;border-color:#fed7aa}
.visual{border:1px solid var(--as-line);border-radius:15px;padding:16px;margin:16px 0;background:#fbfdff;overflow:hidden}.visual svg{display:block;width:100%;max-width:100%;height:auto;margin:auto}.visual-scroll{overflow-x:auto}.visual-scroll svg{min-width:0;width:100%}
.diagram-preview{position:relative;cursor:zoom-in;outline:none}.diagram-preview:focus-visible{box-shadow:0 0 0 3px rgba(25,103,210,.25);border-color:var(--as-primary)}
.diagram-label{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin:0 0 12px;padding:0 2px}.diagram-label strong{color:#163f75;font-size:14px}.diagram-label span{font-size:12px;color:var(--as-muted);text-align:right}
.diagram-expand{position:absolute;right:12px;bottom:12px;border:1px solid #b7c9df;background:rgba(255,255,255,.94);color:#174b86;border-radius:999px;padding:8px 11px;font:inherit;font-size:12px;font-weight:900;cursor:pointer;box-shadow:0 3px 12px rgba(15,23,42,.12)}.diagram-expand:hover{background:#eef5ff}
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:14px 0}.node{background:#fff;border:2px solid var(--as-primary);border-radius:12px;padding:11px 15px;font-weight:900;text-align:center}.arrow{font-size:22px;color:#334155;font-weight:900}
.table-wrap{overflow-x:auto;margin:14px 0;border-radius:12px;border:1px solid var(--as-line)}table{width:100%;border-collapse:collapse;background:#fff;min-width:620px}th,td{padding:10px;border-bottom:1px solid var(--as-line);text-align:left;vertical-align:top}th{background:#eaf2ff;color:#114b9e;font-size:13px}tr:last-child td{border-bottom:0}
.checkpoint{background:#111827;color:#f8fafc;border-radius:16px;padding:18px;margin:20px 0}.checkpoint h3{color:#fff;margin-top:0}.checkpoint p,.checkpoint li{color:#e5e7eb}
.notebook{border:2px dashed #7aa7df;background:#f8fbff;border-radius:16px;padding:17px;margin:18px 0}.notebook h3{margin-top:0;color:#164a88}.notebook .notebook-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:900;color:#55708e}
.stage-footer{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:stretch;margin:20px 0 40px}.stage-footer a{text-decoration:none;border:1px solid var(--as-line);background:#fff;border-radius:13px;padding:12px 14px;font-weight:850;box-shadow:0 3px 12px rgba(15,23,42,.06)}.stage-footer a:hover{border-color:#9bbce5;background:#f8fbff}.stage-footer .next{text-align:right}.stage-footer .all{text-align:center;white-space:nowrap}.stage-footer .disabled{visibility:hidden}
.stage-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.stage-card{display:block;text-decoration:none;color:inherit;background:#fff;border:1px solid var(--as-line);border-radius:16px;padding:16px;box-shadow:var(--as-shadow);transition:.16s}.stage-card:hover{transform:translateY(-2px);border-color:#9fc0ed}.stage-card strong{display:block;color:var(--as-primary-dark);font-size:17px;margin-bottom:7px}.stage-card p{margin:0;color:#485a70;line-height:1.45;font-size:13px}
.project-path{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:16px 0}.project-path span{background:#fff;border:1px solid var(--as-line);border-radius:999px;padding:7px 10px;font-weight:800;font-size:12px}.project-path b{color:#6b7280}
.small{font-size:13px;color:var(--as-muted)}
.focus{font-weight:900;color:#123b73}.action{font-weight:900;color:#123b73}

.diagram-viewer[hidden]{display:none!important}.diagram-viewer{position:fixed;inset:0;z-index:1000;background:rgba(10,18,30,.88);padding:14px;display:flex;align-items:stretch;justify-content:center}.diagram-viewer-panel{width:min(1500px,100%);height:100%;background:#f8fafc;border-radius:18px;display:grid;grid-template-rows:auto minmax(0,1fr) auto;overflow:hidden;box-shadow:0 20px 70px rgba(0,0,0,.4)}
.diagram-viewer-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 15px;background:#fff;border-bottom:1px solid var(--as-line)}.diagram-viewer-header strong{color:#163f75}.diagram-viewer-header button{border:0;background:#eef2f7;color:#172033;width:38px;height:38px;border-radius:999px;font-size:18px;font-weight:900;cursor:pointer}
.diagram-viewer-canvas{min-width:0;min-height:0;overflow:auto;padding:18px;background:#e7edf5}.diagram-viewer-stage{position:relative;margin:auto;background:#fff;border:1px solid #cbd5e1;border-radius:10px;box-shadow:0 8px 24px rgba(15,23,42,.13)}.diagram-viewer-svg{position:absolute;left:50%;top:50%;max-width:none!important;margin:0!important;transform-origin:center center}
.diagram-viewer-controls{display:flex;align-items:center;justify-content:center;gap:9px;flex-wrap:wrap;padding:11px;background:#fff;border-top:1px solid var(--as-line)}.diagram-viewer-controls button{border:1px solid #bdcce0;background:#f8fbff;color:#174b86;border-radius:9px;min-height:38px;padding:7px 12px;font:inherit;font-weight:900;cursor:pointer}.diagram-viewer-controls button:hover{background:#eaf2ff}.diagram-viewer-controls button[data-diagram-action="minus"],.diagram-viewer-controls button[data-diagram-action="plus"]{font-size:21px;min-width:42px}.diagram-zoom-label{min-width:50px;text-align:center;font-size:12px;font-weight:900;color:#52657b}

@media(max-width:1050px){
  .course-shell{grid-template-columns:215px minmax(0,1fr)}
  body.nav-collapsed .course-shell{grid-template-columns:58px minmax(0,1fr)}
  .course-main{padding:18px}.grid,.stage-index{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:820px){
  .menu-toggle{display:inline-flex}.brand{display:none}.course-title{font-size:16px}.desktop-nav-collapse{display:none}
  .course-shell,body.nav-collapsed .course-shell{display:block}.course-nav{position:fixed;top:64px;left:0;bottom:0;width:min(88vw,340px);height:auto;transform:translateX(-105%);transition:.2s;z-index:25;box-shadow:10px 0 30px rgba(15,23,42,.18);overflow:auto;padding:16px 12px}body.nav-open .course-nav{transform:translateX(0)}body.nav-open:after{content:"";position:fixed;inset:64px 0 0 0;background:rgba(15,23,42,.34);z-index:20}
  body.nav-collapsed .nav-project,body.nav-collapsed .nav-group-title,body.nav-collapsed .stage-link{display:flex}body.nav-collapsed .nav-group-title{display:block}
  .course-main{padding:14px}.grid,.grid2,.stage-index{grid-template-columns:1fr}.chapter{padding:19px}.hero{padding:22px}.hero p{font-size:16px}
  .stage-footer{grid-template-columns:1fr 1fr}.stage-footer .all{grid-column:1/-1;grid-row:2}.stage-footer .next{text-align:right}
  .visual-scroll svg{min-width:0;width:100%}.meu-mbb-hook{max-width:44vw}
  .diagram-label{display:block;padding-right:92px}.diagram-label span{display:block;text-align:left;margin-top:2px}.diagram-expand{right:9px;bottom:9px;padding:7px 9px}
  .diagram-viewer{padding:0}.diagram-viewer-panel{border-radius:0}.diagram-viewer-header{padding:9px 11px}.diagram-viewer-header strong{font-size:14px}.diagram-viewer-canvas{padding:10px}.diagram-viewer-controls{gap:6px;padding:8px}.diagram-viewer-controls button{padding:6px 9px;font-size:12px}
}
@media(max-width:480px){
  .course-header{padding:9px 10px}.portal-link{padding:7px 10px}.course-title{font-size:14px}.menu-toggle{padding:7px 9px;font-size:12px}
  .course-main{padding:10px}.hero{border-radius:16px;padding:18px}.hero h1,.hero h2{font-size:clamp(26px,9vw,36px)}.chapter{border-radius:15px;padding:16px}.chapter h2{font-size:22px}.chapter h3{font-size:18px}
  .stage-progress{font-size:12px}.table-wrap{margin-left:-4px;margin-right:-4px}.stage-footer{gap:8px}.stage-footer a{font-size:13px;padding:10px}.meu-mbb-hook{max-width:38vw}
  .visual{padding:10px;margin-left:-2px;margin-right:-2px}.diagram-label{padding-right:80px}.diagram-label strong{font-size:13px}.diagram-label span{font-size:11px}.diagram-expand{font-size:11px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.stage-card,.course-nav,.course-shell{transition:none}}