:root{
    --scarlet:#C8102E;
    --scarlet-dark:#9B0C23;
    --scarlet-deep:#7A091B;
    --gold:#F6BE00;
    --gold-dark:#C89900;
    --ink:#1a1a1a;
    --slate:#54585A;
    --slate-light:#8A8D8F;
    --cream:#faf8f3;
    --paper:#ffffff;
    --line:rgba(0,0,0,0.08);
    --emerald:#16A34A;
    --amber:#D97706;
  }
  *{box-sizing:border-box}
  html,body{margin:0;padding:0}
  body{
    font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Roboto','Inter',sans-serif;
    color:var(--ink);
    background:var(--cream);
    background-image:
      linear-gradient(rgba(0,0,0,0.025) 1px,transparent 1px),
      linear-gradient(90deg,rgba(0,0,0,0.025) 1px,transparent 1px);
    background-size:24px 24px;
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }
  .mono{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace}
  .serif{font-family:'Crimson Text',Georgia,serif}

  /* ====== LAYOUT ====== */
  .layout{
    max-width:1200px;margin:0 auto;padding:0 24px;
    display:grid;grid-template-columns:240px 1fr;gap:48px;
  }
  @media (max-width:960px){.layout{grid-template-columns:1fr;gap:0}.toc{position:static!important;max-height:none!important;margin-bottom:24px}}

  /* ====== HEADER ====== */
  .hero{
    background:var(--paper);
    border:1px solid var(--line);
    border-top:4px solid var(--scarlet);
    border-bottom:4px solid var(--scarlet);
    margin:32px 0 8px;
    padding:48px 56px 40px;
    position:relative;
    box-shadow:0 1px 0 rgba(0,0,0,0.04);
  }
  .hero::before,.hero::after{
    content:"";position:absolute;width:14px;height:14px;
    border:1.5px solid var(--gold);border-radius:50%;
  }
  .hero::before{top:16px;left:16px}
  .hero::after{top:16px;right:16px}
  .hero .corner-br,.hero .corner-bl{position:absolute;bottom:16px;width:14px;height:14px;border:1.5px solid var(--gold);border-radius:50%}
  .hero .corner-br{right:16px} .hero .corner-bl{left:16px}
  .hero-kicker{
    font-family:'JetBrains Mono',monospace;font-size:11px;
    letter-spacing:0.3em;color:var(--scarlet);font-weight:600;
    text-transform:uppercase;margin-bottom:16px;
  }
  .hero h1{
    font-size:56px;line-height:1.02;letter-spacing:-1.5px;
    font-weight:800;margin:0 0 12px;color:var(--ink);
  }
  .hero h1 em{color:var(--scarlet);font-style:normal}
  .hero-sub{
    font-family:'Crimson Text',Georgia,serif;font-style:italic;
    font-size:22px;line-height:1.4;color:var(--slate);
    max-width:720px;margin:0 0 24px;
  }
  .hero-meta{
    display:flex;gap:32px;flex-wrap:wrap;
    padding-top:20px;border-top:1px solid var(--line);
    font-family:'JetBrains Mono',monospace;font-size:11px;
    letter-spacing:0.08em;text-transform:uppercase;color:var(--slate);
  }
  .hero-meta span{display:flex;flex-direction:column;gap:4px}
  .hero-meta b{color:var(--ink);font-weight:700;font-size:13px}

  /* Tape strip above hero */
  .tape{
    background:var(--ink);color:#f6f6f6;
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.3em;text-transform:uppercase;
    padding:8px 24px;display:flex;justify-content:space-between;align-items:center;
    margin-top:0;max-width:1200px;margin-left:auto;margin-right:auto;
  }
  .tape .rec{display:flex;align-items:center;gap:6px}
  .tape .rec-dot{width:7px;height:7px;background:var(--scarlet);border-radius:50%;animation:pulse 2s infinite}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:0.3}}

  /* ====== HOW TO USE ====== */
  .how-to-use{
    background:var(--paper);border:1px solid var(--line);
    margin-bottom:32px;padding:28px 40px;
    border-left:4px solid var(--gold);
  }
  .how-to-use h3{
    font-family:'JetBrains Mono',monospace;font-size:11px;
    letter-spacing:0.25em;text-transform:uppercase;
    color:var(--gold-dark);margin:0 0 12px;font-weight:700;
  }
  .how-to-use p{margin:0 0 8px;font-size:14px;color:var(--slate)}
  .how-to-use ol{margin:8px 0 0;padding-left:20px;font-size:14px;color:var(--slate)}
  .how-to-use ol li{margin-bottom:4px}

  /* ====== TOC ====== */
  .toc{
    position:sticky;top:32px;align-self:start;
    max-height:calc(100vh - 64px);overflow-y:auto;
    padding:24px 0 24px 0;
    border-right:1px solid var(--line);
    font-size:13px;
  }
  .toc-header{
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.3em;text-transform:uppercase;color:var(--scarlet);
    font-weight:700;margin-bottom:16px;padding-right:24px;
  }
  .toc ol{list-style:none;padding:0;margin:0}
  .toc ol li{margin-bottom:6px}
  .toc a{
    display:block;color:var(--slate);text-decoration:none;
    padding:4px 24px 4px 0;
    border-left:2px solid transparent;padding-left:12px;margin-left:-14px;
    transition:all 0.15s;line-height:1.35;
  }
  .toc a:hover{color:var(--scarlet);border-left-color:var(--gold)}
  .toc a.active{color:var(--scarlet);border-left-color:var(--scarlet);font-weight:600}
  .toc a .num{
    font-family:'JetBrains Mono',monospace;font-size:10px;
    color:var(--slate-light);margin-right:8px;letter-spacing:0.05em;
  }
  .toc .sub a{font-size:12px;padding-left:28px;margin-left:-30px;color:var(--slate-light)}
  .toc .sub a:hover{color:var(--scarlet)}

  /* ====== CONTENT ====== */
  .content{padding:24px 0 80px;min-width:0}
  .part-header{
    display:flex;align-items:baseline;gap:16px;
    margin:56px 0 28px;padding-bottom:16px;
    border-bottom:2px solid var(--ink);
  }
  .part-header:first-child{margin-top:0}
  .part-num{
    font-family:'JetBrains Mono',monospace;font-size:11px;
    letter-spacing:0.3em;color:var(--scarlet);font-weight:700;
    text-transform:uppercase;
  }
  .part-header h2{
    font-size:36px;font-weight:800;margin:0;
    letter-spacing:-0.8px;color:var(--ink);line-height:1.1;
  }
  .section{margin:32px 0}
  .section h3{
    font-size:22px;font-weight:700;margin:32px 0 12px;
    color:var(--ink);letter-spacing:-0.3px;
  }
  .section h4{
    font-size:15px;font-weight:700;margin:20px 0 8px;
    color:var(--scarlet-dark);
    font-family:'JetBrains Mono',monospace;
    letter-spacing:0.1em;text-transform:uppercase;
  }
  .section p{font-size:15px;color:var(--slate);margin:0 0 14px;line-height:1.65}
  .section ul{padding-left:20px;color:var(--slate);font-size:15px;line-height:1.65}
  .section ul li{margin-bottom:6px}
  .section a{color:var(--scarlet);text-decoration:none;border-bottom:1px solid rgba(200,16,46,0.3)}
  .section a:hover{border-bottom-color:var(--scarlet)}

  /* ====== CALLOUTS ====== */
  .callout{
    margin:20px 0;padding:20px 24px;
    background:var(--paper);border:1px solid var(--line);
    position:relative;
  }
  .callout.key{border-left:4px solid var(--gold);background:#fffdf5}
  .callout.warn{border-left:4px solid var(--amber);background:#fff9f0}
  .callout.critical{border-left:4px solid var(--scarlet);background:#fff5f5}
  .callout.success{border-left:4px solid var(--emerald);background:#f0fdf4}
  .callout-label{
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.25em;text-transform:uppercase;font-weight:700;
    margin-bottom:8px;display:block;
  }
  .callout.key .callout-label{color:var(--gold-dark)}
  .callout.warn .callout-label{color:var(--amber)}
  .callout.critical .callout-label{color:var(--scarlet)}
  .callout.success .callout-label{color:var(--emerald)}
  .callout p{margin:0;font-size:14px;color:var(--ink);line-height:1.55}
  .callout p + p{margin-top:10px}
  .callout strong{color:var(--ink)}

  /* ====== TABLES ====== */
  table{
    width:100%;border-collapse:collapse;
    margin:16px 0;font-size:14px;
    background:var(--paper);border:1px solid var(--line);
  }
  thead{background:#f8f6f2}
  th{
    text-align:left;padding:12px 16px;
    font-family:'JetBrains Mono',monospace;font-size:11px;
    letter-spacing:0.15em;text-transform:uppercase;
    color:var(--ink);font-weight:700;
    border-bottom:2px solid var(--ink);
  }
  td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--slate);vertical-align:top}
  tbody tr:last-child td{border-bottom:none}
  td.pri-high{color:var(--scarlet);font-weight:700}
  td.pri-med{color:var(--amber);font-weight:600}
  td.pri-low{color:var(--emerald);font-weight:600}
  td .mono{font-size:13px;color:var(--scarlet-dark)}
  td strong{color:var(--ink)}

  /* ====== BADGES ====== */
  .badge{
    display:inline-block;padding:3px 8px;border-radius:3px;
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.15em;text-transform:uppercase;font-weight:700;
  }
  .badge.bronze{background:#fdf4e3;color:#8a6d1f}
  .badge.silver{background:#f0f0f0;color:#555}
  .badge.gold{background:#fff4c4;color:#8a6d1f}
  .badge.special{background:rgba(200,16,46,0.1);color:var(--scarlet)}
  .badge.rec{background:rgba(0,0,0,0.05);color:var(--slate)}

  /* ====== PHASE GANTT ====== */
  .gantt{
    margin:24px 0;background:var(--paper);border:1px solid var(--line);
    padding:24px;
  }
  .gantt-header{
    display:grid;grid-template-columns:80px repeat(8,1fr);
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.12em;text-transform:uppercase;
    color:var(--slate-light);font-weight:600;
    padding-bottom:12px;border-bottom:1px solid var(--line);
  }
  .gantt-header span{text-align:center}
  .gantt-row{
    display:grid;grid-template-columns:80px repeat(8,1fr);
    align-items:center;margin-top:12px;min-height:36px;
    position:relative;
  }
  .gantt-row-label{
    font-family:'JetBrains Mono',monospace;font-size:11px;
    font-weight:700;color:var(--ink);letter-spacing:0.05em;
  }
  .gantt-bar{
    grid-column:var(--start)/var(--end);
    height:24px;border-radius:3px;
    display:flex;align-items:center;padding:0 10px;
    font-size:11px;font-weight:700;color:white;
    letter-spacing:0.03em;
  }
  .gantt-bar.p1{background:var(--scarlet);grid-column:2/4}
  .gantt-bar.p2{background:var(--scarlet-dark);grid-column:4/6}
  .gantt-bar.p3{background:var(--gold);color:var(--ink);grid-column:6/8}
  .gantt-bar.p4{background:var(--emerald);grid-column:8/10}

  /* ====== FIRST WEEK CARDS ====== */
  .role-grid{
    display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;
    margin:20px 0;
  }
  .role-card{
    background:var(--paper);border:1px solid var(--line);
    padding:20px;border-top:3px solid var(--scarlet);
  }
  .role-card h4{
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.2em;text-transform:uppercase;
    color:var(--scarlet);margin:0 0 10px;font-weight:700;
  }
  .role-card h5{
    font-size:16px;font-weight:800;margin:0 0 14px;
    color:var(--ink);letter-spacing:-0.2px;
  }
  .role-card ul{
    padding-left:16px;margin:0;font-size:13px;color:var(--slate);line-height:1.5;
  }
  .role-card ul li{margin-bottom:6px}
  .role-card ul li::marker{color:var(--scarlet)}

  /* ====== DELIVERABLE CHECKLIST ====== */
  .checklist{
    background:var(--paper);border:1px solid var(--line);
    padding:24px;margin:20px 0;
  }
  .checklist-item{
    display:flex;gap:14px;padding:14px 0;
    border-bottom:1px solid var(--line);
  }
  .checklist-item:last-child{border-bottom:none}
  .checklist-check{
    width:22px;height:22px;border:1.5px solid var(--slate-light);
    border-radius:4px;flex-shrink:0;margin-top:1px;
  }
  .checklist-body{flex:1}
  .checklist-title{
    font-weight:700;font-size:14px;color:var(--ink);margin-bottom:2px;
  }
  .checklist-meta{
    font-family:'JetBrains Mono',monospace;font-size:11px;
    color:var(--slate-light);letter-spacing:0.05em;
  }
  .checklist-meta .loc{color:var(--scarlet-dark)}

  /* ====== MEDAL CARDS ====== */
  .medal-row{
    display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
    margin:24px 0;
  }
  @media (max-width:720px){.medal-row{grid-template-columns:1fr}}
  .medal-card{
    background:var(--paper);border:1px solid var(--line);
    padding:24px;position:relative;overflow:hidden;
  }
  .medal-card.bronze{border-top:4px solid #a6701f}
  .medal-card.silver{border-top:4px solid #8a8a8a}
  .medal-card.gold{border-top:4px solid var(--gold)}
  .medal-num{
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.3em;text-transform:uppercase;font-weight:700;
    margin-bottom:8px;
  }
  .medal-card.bronze .medal-num{color:#a6701f}
  .medal-card.silver .medal-num{color:#6a6a6a}
  .medal-card.gold .medal-num{color:var(--gold-dark)}
  .medal-card h4{
    font-size:24px;font-weight:800;margin:0 0 16px;
    color:var(--ink);letter-spacing:-0.3px;
  }
  .medal-card ul{
    margin:0;padding-left:18px;font-size:13px;color:var(--slate);line-height:1.5;
  }
  .medal-card ul li{margin-bottom:6px}

  /* ====== GLOSSARY ====== */
  .glossary{
    background:var(--paper);border:1px solid var(--line);
    padding:28px 32px;margin:20px 0;
  }
  .glossary-grid{
    display:grid;grid-template-columns:repeat(2,1fr);gap:16px 28px;
  }
  @media (max-width:720px){.glossary-grid{grid-template-columns:1fr}}
  .glossary-term{
    font-family:'JetBrains Mono',monospace;font-size:12px;
    font-weight:700;color:var(--scarlet);margin-bottom:3px;
    letter-spacing:0.03em;
  }
  .glossary-def{font-size:13px;color:var(--slate);line-height:1.45}

  /* ====== BOTTOM LINE ====== */
  .bottom-line{
    background:var(--ink);color:var(--paper);
    margin:56px 0 32px;padding:48px 56px;
    position:relative;
  }
  .bottom-line::before{
    content:"";position:absolute;top:0;left:0;right:0;height:4px;
    background:linear-gradient(90deg,var(--scarlet) 0%,var(--gold) 50%,var(--emerald) 100%);
  }
  .bottom-line h2{
    font-family:'Crimson Text',Georgia,serif;font-style:italic;font-weight:600;
    font-size:32px;margin:0 0 20px;color:var(--gold);
    letter-spacing:-0.3px;
  }
  .bottom-line p{
    font-size:16px;line-height:1.7;color:rgba(255,255,255,0.85);margin:0 0 14px;
  }
  .bottom-line p:last-child{
    font-family:'Crimson Text',Georgia,serif;font-style:italic;font-size:22px;
    color:var(--gold);margin-top:24px;
  }

  /* ====== FOOTER ====== */
  .footer{
    padding:24px 0;text-align:center;
    font-family:'JetBrains Mono',monospace;font-size:10px;
    letter-spacing:0.2em;text-transform:uppercase;color:var(--slate-light);
    border-top:1px solid var(--line);
  }

  /* ====== PRINT ====== */
  @media print{
    body{background:white;background-image:none;font-size:10pt}
    .toc,.tape{display:none}
    .layout{grid-template-columns:1fr;max-width:none;padding:0}
    .hero{margin:0;padding:32px 24px;break-after:page}
    .part-header{break-before:page}
    .bottom-line{break-before:page;background:white;color:var(--ink);padding:24px}
    .bottom-line h2,.bottom-line p:last-child{color:var(--scarlet-dark)}
    .bottom-line p{color:var(--ink)}
    .callout,.medal-card,.role-card,.checklist,.gantt,.glossary,table{break-inside:avoid}
    a{color:var(--ink)!important;border-bottom:none!important}
  }