:root{
  --indigo:#6366f1;--teal:#10b981;--red:#ff5757;--orange:#FF914D;--yellow:#FFDE59;
  --green:#7ED957;--blue:#38B6FF;--purple:#CB6CE6;--dark:#10162f;--bg:#fafafa;--border:#000;
  --w1:#ff5757;--w2:#10162f;--w3:#7c3aed;--w4:#0ea5e9;
  --cn:#dc2626;--en:#2563eb;--both:#10b981;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'DM Sans','Noto Sans SC',sans-serif;background:var(--bg);color:#1a1a1a;line-height:1.6}
a{color:var(--indigo);text-decoration:none}a:hover{text-decoration:underline}
.mono{font-family:'Space Mono',monospace}

/* ============================================ */
/* Header                                       */
/* ============================================ */
.header{background:var(--dark);color:#fff;padding:40px 0;text-align:center;border-bottom:4px solid var(--border)}
.header h1{font-size:36px;font-weight:900;letter-spacing:-1px}
.header .sub{font-size:16px;opacity:0.8;margin-top:8px;max-width:760px;margin-left:auto;margin-right:auto;padding:0 16px}
.header .nav{margin-top:16px;font-size:14px}
.header .nav a{color:#fff;opacity:0.8;margin:0 8px}
.header .nav a:hover{opacity:1}
.tags{display:flex;gap:10px;justify-content:center;margin-top:16px;flex-wrap:wrap;padding:0 16px}
.tag{padding:5px 14px;font-size:12px;font-weight:700;font-family:'Space Mono',monospace;border:2px solid rgba(255,255,255,0.3);color:#fff}
.tag.a{background:var(--indigo);border-color:var(--indigo)}
.tag.w1{background:var(--w1);border-color:var(--w1)}
.tag.w2{background:#1f2942;border-color:#1f2942}
.tag.w3{background:var(--w3);border-color:var(--w3)}
.tag.w4{background:var(--w4);border-color:var(--w4)}

/* Stat bar */
.bar{display:flex;justify-content:center;gap:32px;padding:16px 0;background:#fff;border-bottom:3px solid var(--border);flex-wrap:wrap}
.bar .s{text-align:center;min-width:80px}
.bar .n{font-size:24px;font-weight:900;color:var(--indigo)}
.bar .l{font-size:11px;color:#888;font-family:'Space Mono',monospace}

/* Page container */
.c{max-width:1300px;margin:0 auto;padding:32px 24px}

/* Box (Neo-Brutalism card) */
.box{border:3px solid #000;background:#fff;box-shadow:6px 6px 0 #000;overflow:hidden;margin-bottom:28px}
.box-h{padding:14px 24px;border-bottom:3px solid #000;color:#fff}

/* Pill */
.pill{display:inline-block;padding:2px 8px;font-weight:700;font-size:11px;font-family:'Space Mono',monospace}

/* ============================================ */
/* Lesson card (curriculum.html)                */
/* ============================================ */
.lesson{margin:14px 24px;border:2px solid #e5e5e5;transition:border-color 0.15s,transform 0.15s}
.lesson:hover{border-color:var(--indigo)}
.lesson-head{padding:10px 16px;display:flex;align-items:center;gap:10px;background:#fafafa;border-bottom:1px solid #eee;flex-wrap:wrap}
.lesson-head h4{font-size:15px;font-weight:700;flex:1;min-width:200px}
.lesson-body{padding:12px 16px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.lesson-body h5{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:#999;margin-bottom:6px;font-family:'Space Mono',monospace}
.lesson-body p{font-size:13px;line-height:1.7;color:#444}

/* Compact lesson row (for curriculum overview) */
.lesson-row{display:flex;gap:12px;padding:10px 16px;border-bottom:1px solid #eee;align-items:flex-start}
.lesson-row:last-child{border-bottom:none}
.lesson-row .lr-code{font-family:'Space Mono',monospace;font-size:11px;font-weight:700;color:#999;min-width:36px;padding-top:2px}
.lesson-row .lr-main{flex:1;min-width:0}
.lesson-row .lr-title{font-size:14px;font-weight:700;color:#1a1a1a;line-height:1.4}
.lesson-row .lr-desc{font-size:12px;color:#666;line-height:1.6;margin-top:3px}
.lesson-row .lr-meta{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap;align-items:center}

/* Tools / pill colors */
.tools{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}
.tool{font-size:11px;padding:2px 8px;background:#f0f0f0;font-family:'Space Mono',monospace;font-weight:600}

/* Pill type colors */
.pill.t-live{background:var(--indigo);color:#fff}
.pill.t-lab{background:var(--teal);color:#fff}
.pill.t-info{background:var(--blue);color:#fff}
.pill.t-quest{background:var(--red);color:#fff}
.pill.t-video{background:var(--purple);color:#fff}

/* Lab type sub-pills */
.pill.lab-prompt{background:#ede9fe;color:#6d28d9;border:1px solid #6d28d9}
.pill.lab-llm{background:#fef3c7;color:#92400e;border:1px solid #92400e}
.pill.lab-frontend{background:#dbeafe;color:#1d4ed8;border:1px solid #1d4ed8}
.pill.lab-python{background:#dcfce7;color:#166534;border:1px solid #166534}
.pill.new-badge{background:var(--yellow);color:#000;border:1px solid #000;font-weight:900}

/* Track tags */
.pill.track-cn{background:var(--cn);color:#fff}
.pill.track-en{background:var(--en);color:#fff}
.pill.track-both{background:var(--both);color:#fff}

/* Duration */
.pill.dur{background:#f3f4f6;color:#666;border:1px solid #ddd}

/* Review tags */
.review{display:inline-block;padding:2px 8px;font-size:11px;font-weight:700;font-family:'Space Mono',monospace;margin-top:6px}
.review.teacher{background:#ede9fe;color:var(--indigo)}
.review.ai{background:#d1fae5;color:var(--teal)}
.review.both{background:#fef3c7;color:#92400e}

/* ============================================ */
/* Phase navigation cards                       */
/* ============================================ */
.phase-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0}
.phase-card{border:3px solid #000;box-shadow:5px 5px 0 #000;padding:20px;transition:all 0.15s;text-decoration:none;color:#000;display:block;background:#fff}
.phase-card:hover{box-shadow:none;transform:translate(4px,4px);text-decoration:none}
.phase-card .pnum{font-size:12px;font-family:'Space Mono',monospace;font-weight:700;opacity:0.6}
.phase-card h3{font-size:18px;font-weight:900;margin:6px 0;line-height:1.3}
.phase-card .pdesc{font-size:13px;color:#444;line-height:1.6}
.phase-card .pweek{font-size:12px;font-family:'Space Mono',monospace;margin-top:10px;color:#888}
.phase-card .pcount{display:flex;gap:10px;margin-top:10px;font-size:11px;font-family:'Space Mono',monospace}
.phase-card .pcount span{padding:2px 6px;background:#f3f4f6;border:1px solid #ddd}

/* ============================================ */
/* Pricing cards                                */
/* ============================================ */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:8px 0}
.price-card{border:3px solid #000;box-shadow:6px 6px 0 #000;background:#fff;padding:20px;display:flex;flex-direction:column;transition:all 0.15s}
.price-card:hover{box-shadow:none;transform:translate(4px,4px)}
.price-card.featured{background:#fffde7}
.price-card .ptag{font-size:11px;font-family:'Space Mono',monospace;font-weight:700;color:#999;letter-spacing:1px}
.price-card h3{font-size:22px;font-weight:900;margin:6px 0 4px}
.price-card .pamt{display:flex;align-items:baseline;gap:8px;margin:8px 0;flex-wrap:wrap}
.price-card .pcny{font-size:32px;font-weight:900;color:var(--dark)}
.price-card .paud{font-size:14px;color:#666;font-family:'Space Mono',monospace}
.price-card .ponce{font-size:13px;color:#444;font-style:italic;margin-bottom:10px;line-height:1.5}
.price-card ul{list-style:none;padding:0;margin:8px 0;font-size:13px;line-height:1.8;flex:1}
.price-card ul li{padding-left:18px;position:relative}
.price-card ul li:before{content:"✓";position:absolute;left:0;top:0;color:var(--teal);font-weight:900}
.price-card .pbest{display:inline-block;padding:3px 10px;background:var(--red);color:#fff;font-size:11px;font-family:'Space Mono',monospace;font-weight:700;letter-spacing:0.5px;margin-bottom:8px}

/* ============================================ */
/* Grid helpers                                 */
/* ============================================ */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.grid4{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:12px}

/* ============================================ */
/* Persona / callout                            */
/* ============================================ */
.callout{padding:16px 20px;border:3px solid #000;background:#fffde7;box-shadow:5px 5px 0 #000;margin:12px 0;font-size:14px;line-height:1.7}
.callout strong{color:var(--dark)}
.callout-red{background:#fef2f2}
.callout-blue{background:#eff6ff}
.callout-green{background:#f0fdf4}

/* Persona table */
.personas{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;padding:16px 24px}
.persona{border:2px solid #000;padding:14px;background:#fff}
.persona .ptrack{display:inline-block;padding:2px 8px;font-size:11px;font-family:'Space Mono',monospace;font-weight:700;margin-bottom:6px}
.persona h4{font-size:15px;font-weight:900;margin:4px 0}
.persona p{font-size:13px;color:#444;line-height:1.6;margin-top:6px}
.persona .pout{margin-top:10px;padding:8px 10px;background:#f0fdf4;border-left:3px solid var(--teal);font-size:12px;line-height:1.6}

/* ============================================ */
/* Comparison table                             */
/* ============================================ */
.comp-table{width:100%;border-collapse:collapse;font-size:13px}
.comp-table th,.comp-table td{padding:10px 12px;border:1px solid #ddd;text-align:left;vertical-align:top}
.comp-table th{background:#10162f;color:#fff;font-family:'Space Mono',monospace;font-size:11px;letter-spacing:1px}
.comp-table tr:nth-child(even) td{background:#fafafa}
.comp-table .yes{color:var(--teal);font-weight:700}
.comp-table .no{color:#999}
.comp-table .partial{color:#92400e}
.comp-table .row-jr td{background:#fffde7 !important;font-weight:700}

/* ============================================ */
/* Details / FAQ                                */
/* ============================================ */
details{border:2px solid #eee;margin-bottom:6px;background:#fff}
details summary{padding:12px 16px;font-weight:700;font-size:14px;cursor:pointer;background:#fafafa;outline:none}
details summary:hover{background:#f0f0f0}
details[open] summary{background:#fffde7;border-bottom:1px solid #eee}
details>div{padding:12px 16px;font-size:13px;line-height:1.8;border-top:1px solid #eee;color:#444}

/* ============================================ */
/* Footer                                       */
/* ============================================ */
.footer{margin-top:40px;padding:24px;text-align:center;border-top:3px solid var(--border);color:#888;font-size:13px}
.footer .promise{margin-top:8px;font-size:11px;color:#aaa;font-family:'Space Mono',monospace}

/* ============================================ */
/* Phase page specific                          */
/* ============================================ */
.phase-summary{padding:18px 24px;background:#fafafa;border-bottom:2px solid #ddd}
.phase-summary h3{font-size:14px;font-weight:700;color:#666;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;font-family:'Space Mono',monospace}
.phase-summary p{font-size:14px;line-height:1.7;color:#222}

/* Lab gallery on phase pages */
.lab-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px;padding:16px 24px}
.lab-card{border:2px solid #ddd;padding:10px 12px;background:#fff;transition:border-color 0.15s}
.lab-card:hover{border-color:var(--teal)}
.lab-card .lc-tag{display:inline-block;padding:2px 6px;font-size:10px;font-family:'Space Mono',monospace;font-weight:700;background:#ede9fe;color:#6d28d9}
.lab-card .lc-name{font-weight:700;margin-top:4px;font-size:13px}
.lab-card .lc-desc{color:#888;margin-top:3px;font-size:11.5px;line-height:1.5}

/* Quest highlight */
.quest-callout{margin:18px 24px;padding:16px;border:3px solid var(--red);background:#fff5f5;box-shadow:4px 4px 0 var(--red)}
.quest-callout h4{font-size:15px;font-weight:900;color:var(--red);margin-bottom:6px}
.quest-callout p{font-size:13px;color:#444;line-height:1.7}

/* CTA buttons */
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:24px 0}
.btn{display:inline-block;padding:14px 28px;font-weight:800;font-size:15px;border:3px solid #000;box-shadow:5px 5px 0 #000;text-decoration:none;transition:all 0.15s;text-align:center}
.btn:hover{box-shadow:none;transform:translate(4px,4px);text-decoration:none}
.btn-dark{background:var(--dark);color:#fff}
.btn-red{background:var(--red);color:#fff}
.btn-teal{background:var(--teal);color:#fff}
.btn-blue{background:var(--blue);color:#fff}

/* Source citation */
.src{font-family:'Space Mono',monospace;font-size:10.5px;color:#888;font-style:italic}
.src a{color:#888}

/* Track marker (inline) */
.track-mark{display:inline-block;padding:1px 7px;font-size:10px;font-family:'Space Mono',monospace;font-weight:700;border-radius:0;border:1px solid;margin-left:4px;letter-spacing:0.5px}
.track-mark.cn{background:#fff;color:var(--cn);border-color:var(--cn)}
.track-mark.en{background:#fff;color:var(--en);border-color:var(--en)}
.track-mark.both{background:#fff;color:var(--both);border-color:var(--both)}

/* ============================================ */
/* Mobile Responsive                            */
/* ============================================ */
@media (max-width: 1024px) {
  .c{padding:24px 16px}
  .phase-cards{grid-template-columns:repeat(2,1fr) !important;gap:12px !important}
  .pricing-grid{grid-template-columns:1fr !important}
  .grid4{grid-template-columns:repeat(2,1fr) !important}
  .personas{grid-template-columns:1fr !important}
}

@media (max-width: 768px) {
  body{font-size:14px}
  .c{padding:20px 12px;max-width:100%}

  /* Header */
  .header{padding:28px 16px}
  .header h1{font-size:24px;line-height:1.2;letter-spacing:-0.5px}
  .header .sub{font-size:13px}
  .header .nav{font-size:12px}
  .header .nav a{display:inline-block;margin:4px}
  .tags{gap:6px}
  .tag{padding:4px 10px;font-size:11px}

  /* Stat bar */
  .bar{gap:14px;padding:12px 8px}
  .bar .s{min-width:60px}
  .bar .n{font-size:18px}
  .bar .l{font-size:10px}

  /* Box */
  .box{box-shadow:4px 4px 0 #000;margin-bottom:18px}
  .box-h{padding:12px 14px;font-size:14px !important}

  /* Lesson */
  .lesson{margin:10px 12px}
  .lesson-head{padding:10px 12px;gap:6px}
  .lesson-head h4{font-size:14px;flex-basis:100%;order:-1;margin-bottom:4px;min-width:0}
  .lesson-body{grid-template-columns:1fr !important;gap:12px;padding:12px}
  .lesson-body h5{font-size:10px}

  /* Lesson row */
  .lesson-row{padding:10px 12px}
  .lesson-row .lr-title{font-size:13px}

  /* Grids collapse */
  .grid2,.grid3,.grid4{grid-template-columns:1fr !important}

  /* Phase cards */
  .phase-cards{grid-template-columns:1fr !important;gap:12px;margin:18px 0}
  .phase-card{box-shadow:4px 4px 0 #000;padding:16px}
  .phase-card h3{font-size:16px}

  /* Pricing */
  .pricing-grid{grid-template-columns:1fr !important;gap:14px}
  .price-card{box-shadow:4px 4px 0 #000;padding:16px}
  .price-card h3{font-size:18px}
  .price-card .pcny{font-size:26px}

  /* Persona */
  .personas{grid-template-columns:1fr !important;gap:10px;padding:14px}
  .persona{padding:12px}

  /* Quest callout */
  .quest-callout{margin:14px 12px;padding:14px}

  /* Lab gallery */
  .lab-gallery{grid-template-columns:1fr;gap:8px;padding:14px}

  /* CTA */
  .cta-row{flex-direction:column;align-items:center}
  .btn{width:100%;max-width:320px;padding:12px 16px;font-size:14px}

  /* Tables responsive */
  .comp-table{font-size:12px;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .comp-table th,.comp-table td{padding:8px 10px;min-width:90px}

  /* Footer */
  .footer{padding:18px 12px;font-size:12px}
}

@media (max-width: 480px) {
  .header h1{font-size:20px}
  .bar{gap:8px}
  .bar .s{min-width:54px}
  .bar .n{font-size:16px}
  .lesson-head h4{font-size:13px}
  .pill{font-size:10px;padding:2px 6px}
  .price-card .pcny{font-size:22px}
}