/* K R&D Lab — cool blue-green palette (default) */
:root{
  --bg:#e8f2f0;
  --panel:rgba(240,252,250,.88);
  --ink:#0c1e2e;
  --muted:#4a6a7a;
  --line:rgba(12,30,46,.12);
  --accent:#1e7a5e;
  --accent-2:#244f8f;
  --science:#1e7a5e;
  --entrepreneurship:#b56b2d;
  --technology:#244f8f;
  --shadow:0 20px 50px rgba(12,30,46,.08);
  --card-bg:#f0faf8;
  --input-bg:#fff;
}
/* Dark theme */
[data-theme="dark"]{
  --bg:#0c1a24;
  --panel:rgba(16,28,38,.85);
  --ink:#c8dce8;
  --muted:#7a9aaa;
  --line:rgba(200,220,232,.1);
  --accent:#3ecf94;
  --accent-2:#6ea8f0;
  --science:#3ecf94;
  --entrepreneurship:#e0a050;
  --technology:#6ea8f0;
  --shadow:0 20px 50px rgba(0,0,0,.3);
  --card-bg:#142430;
  --input-bg:#0f1c28;
}
*{box-sizing:border-box}
body{
  margin:0;
  color:var(--ink);
  background:
    radial-gradient(circle at top left,rgba(30,122,94,.14),transparent 26%),
    radial-gradient(circle at top right,rgba(181,107,45,.14),transparent 24%),
    linear-gradient(180deg,color-mix(in srgb,var(--bg) 0%,#faf7f1) 0%,var(--bg) 100%);
  font-family:"Segoe UI","Inter",sans-serif;
  transition:background .3s,color .3s;
}
[data-theme="dark"] body{
  background:
    radial-gradient(circle at top left,rgba(62,207,148,.08),transparent 26%),
    radial-gradient(circle at top right,rgba(110,168,240,.06),transparent 24%),
    linear-gradient(180deg,#081018 0%,var(--bg) 100%);
}
.page{width:min(1180px,calc(100vw - 32px));margin:0 auto;padding:32px 0 56px}
.hero,.panel-section{background:var(--panel);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}
.hero{padding:32px}
.panel-section{padding:28px;margin-top:18px}
.panel-section h2{margin:0 0 14px;font-size:22px}
.eyebrow{margin:0 0 8px;text-transform:uppercase;letter-spacing:.14em;font-size:12px;color:var(--accent);font-weight:700}
.hero h1{margin:0;font-size:clamp(34px,5vw,56px);line-height:.95}
.lede{max-width:760px;color:var(--muted);font-size:18px;line-height:1.55}
.hero-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.hero-links a,.link-pill{text-decoration:none;border:1px solid var(--line);color:var(--ink);background:var(--input-bg);padding:10px 14px;border-radius:999px;font-weight:600;font-size:14px;transition:all .15s}
.hero-links a:hover,.link-pill:hover{background:var(--ink);color:#fff}
.breadcrumb{margin:0 0 16px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--accent);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.md-content{background:var(--panel);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:36px 40px;max-width:860px}
.md-content h1{font-size:clamp(1.8rem,4vw,2.6rem);margin:0 0 16px;border-bottom:2px solid var(--line);padding-bottom:12px}
.md-content h2{font-size:1.5rem;margin:32px 0 12px;color:var(--ink)}
.md-content h3{font-size:1.15rem;margin:24px 0 8px;color:var(--muted)}
.md-content p{line-height:1.7;margin:0 0 12px}
.md-content ul,.md-content ol{padding-left:24px;margin:0 0 12px}
.md-content li{line-height:1.6;margin:4px 0}
.md-content blockquote{border-left:3px solid var(--accent);margin:16px 0;padding:8px 16px;background:rgba(30,122,94,.06);border-radius:0 12px 12px 0;font-style:italic;color:var(--muted)}
.md-content code{background:rgba(19,33,28,.08);padding:2px 6px;border-radius:4px;font-size:.88em;font-family:"Cascadia Code",Fira Code,monospace}
.md-content pre{background:rgba(19,33,28,.06);border:1px solid var(--line);border-radius:12px;padding:16px;overflow-x:auto;margin:12px 0}
.md-content pre code{background:none;padding:0;font-size:.82em;line-height:1.5}
.md-content table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.88em}
.md-content th,.md-content td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.md-content th{background:rgba(19,33,28,.05);font-weight:600}
.md-content tr:hover{background:rgba(19,33,28,.03)}
.md-content hr{border:none;border-top:1px solid var(--line);margin:24px 0}
.md-content details{border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:12px 0;background:rgba(255,255,255,.6)}
.md-content summary{cursor:pointer;font-weight:600;color:var(--muted);user-select:none}
.md-content details[open] summary{margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.md-content a{color:var(--technology);text-decoration:none}
.md-content a:hover{text-decoration:underline}
.md-content.sphere-S blockquote{border-left-color:var(--science);background:rgba(30,122,94,.06)}
.md-content.sphere-E blockquote{border-left-color:var(--entrepreneurship);background:rgba(181,107,45,.06)}
.md-content.sphere-T blockquote{border-left-color:var(--technology);background:rgba(36,79,143,.06)}
.quest-layout{display:grid;grid-template-columns:240px 1fr;gap:24px}
.quest-nav{background:var(--panel);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:20px 16px;position:sticky;top:24px;max-height:calc(100vh - 48px);overflow-y:auto}
.quest-nav h2{font-size:1rem;margin:0 0 12px}
.quest-nav h3{font-size:.82rem;margin:10px 0 4px}
.quest-nav a{display:block;color:var(--muted);font-size:.78rem;padding:3px 0 3px 12px;text-decoration:none;border-left:2px solid transparent;transition:all .15s}
.quest-nav a:hover,.quest-nav a.active{color:var(--ink);border-left-color:var(--technology)}
.quest-nav .nav-S a:hover,.quest-nav .nav-S a.active{border-left-color:var(--science)}
.quest-nav .nav-E a:hover,.quest-nav .nav-E a.active{border-left-color:var(--entrepreneurship)}
.quest-nav .nav-T a:hover,.quest-nav .nav-T a.active{border-left-color:var(--technology)}
.back-link{display:inline-block;color:var(--muted);font-size:.8rem;margin-bottom:12px;text-decoration:none}
.back-link:hover{color:var(--ink)}
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:18px 0}
.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}
.stat-card.science{border-color:rgba(30,122,94,.2)}
.stat-card.entrepreneurship{border-color:rgba(181,107,45,.2)}
.stat-card.technology{border-color:rgba(36,79,143,.2)}
.stat-value{font-size:30px;font-weight:700}
.stat-label{margin-top:6px;color:var(--muted);font-size:14px}
/* Direction cards */
.direction-card{background:var(--card-bg);border:1px solid var(--line);border-radius:22px;padding:18px;display:flex;flex-direction:column;gap:10px}
.direction-card.active{border-color:var(--accent);box-shadow:0 0 0 2px rgba(30,122,94,.15)}
.direction-topline{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.chip{border-radius:999px;padding:4px 10px;font-size:12px;font-weight:700}
.chip-s{background:rgba(30,122,94,.12);color:var(--science)}
.chip-e{background:rgba(181,107,45,.14);color:var(--entrepreneurship)}
.chip-t{background:rgba(36,79,143,.12);color:var(--technology)}
.chip-bridge{background:rgba(101,63,153,.1);color:#653f99}
.chip.subtle{background:var(--line);color:var(--muted)}
.direction-card h3{margin:0;font-size:18px}
.direction-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}
.card-meta{font-size:13px;color:var(--muted)}
.card-meta a{color:var(--technology);text-decoration:none}
.card-meta a:hover{text-decoration:underline}
.direction-card details{border:1px solid var(--line);border-radius:12px;padding:8px 12px;font-size:13px;background:var(--card-bg)}
.direction-card summary{cursor:pointer;font-weight:600;color:var(--muted);font-size:13px;user-select:none}
.direction-card details[open] summary{margin-bottom:4px;padding-bottom:4px;border-bottom:1px solid var(--line)}
.direction-card ul{margin:4px 0 0;padding-left:18px;color:var(--ink);font-size:13px}
.direction-card li{margin:2px 0;line-height:1.4}
.direction-card li a{color:var(--technology);text-decoration:none}
.direction-card li a:hover{text-decoration:underline}
.resource-list{list-style:none;padding:0!important;margin:4px 0 0!important}
.resource-list li{padding:3px 0}
.resource-list li::before{content:"→ ";color:var(--accent)}
.card-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:8px}
.card-actions button,.card-actions a{text-decoration:none;border:1px solid var(--line);color:var(--ink);background:var(--input-bg);padding:8px 14px;border-radius:999px;font-weight:600;font-size:13px;cursor:pointer;transition:all .15s}
.card-actions button:hover,.card-actions a:hover{background:var(--ink);color:#fff}

/* Mission Lab */
.mission-header{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:16px;flex-wrap:wrap}
.mission-header .eyebrow{margin:0 0 4px}
.mission-header h3{margin:0;font-size:20px}
.mission-header p{margin:4px 0 0;color:var(--muted);font-size:14px}
.mission-progress{min-width:140px;text-align:right}
.progress-bar{height:8px;background:rgba(19,33,28,.08);border-radius:999px;overflow:hidden}
.progress-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .3s}
.progress-copy{margin:4px 0 0;font-size:13px;color:var(--muted)}
.mission-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.mission-section{background:var(--card-bg);border:1px solid var(--line);border-radius:16px;padding:14px}
.mission-section.full-span{grid-column:1/-1}
.mission-section h3{margin:0 0 8px;font-size:15px}
.pill-row{display:flex;gap:6px;flex-wrap:wrap}
.pill-button{border:1px solid var(--line);background:var(--input-bg);color:var(--ink);padding:6px 12px;border-radius:999px;font-size:13px;cursor:pointer;transition:all .15s}
.pill-button.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.pill-button:hover{border-color:var(--accent)}
.checklist{display:flex;flex-direction:column;gap:6px}
.check-item{display:flex;gap:8px;align-items:flex-start;font-size:14px;cursor:pointer}
.check-item input[type="checkbox"]{margin-top:3px;accent-color:var(--accent)}
.check-copy{color:var(--ink);line-height:1.4}
.twist-card{background:rgba(30,122,94,.06);border:1px solid rgba(30,122,94,.15);border-radius:12px;padding:12px;font-style:italic;color:var(--muted);font-size:14px;line-height:1.5}
[data-theme="dark"] .twist-card{background:rgba(62,207,148,.08);border-color:rgba(62,207,148,.2)}
.mission-notes{width:100%;min-height:80px;border:1px solid var(--line);border-radius:12px;padding:10px;font-size:14px;font-family:inherit;background:var(--input-bg);color:var(--ink);resize:vertical}
.mission-notes:focus{outline:none;border-color:var(--accent)}
.mission-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.mission-actions button{border:1px solid var(--line);background:var(--input-bg);color:var(--ink);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer;transition:all .15s}
.mission-actions button:hover{background:var(--ink);color:#fff}

/* Race Simulator */
.horse-option{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--input-bg);color:var(--ink);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer;transition:all .15s}
.horse-option.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.horse-dot{display:inline-block;width:12px;height:12px;border-radius:50%}
.horse-blue{background:#4f7cff}
.horse-gold{background:#f59e0b}
.horse-green{background:#1e7a5e}
.horse-coral{background:#ef6461}
.horse-purple{background:#8b5cf6}
.horse-amber{background:#d97706}
.horse-teal{background:#14b8a6}
.horse-rose{background:#f43f5e}
.horse-mint{background:#6ee7b7}
.horse-sun{background:#fbbf24}
.horse-indigo{background:#6366f1}
.horse-scarlet{background:#dc2626}
.track-row{display:flex;align-items:center;gap:10px;margin:6px 0}
.track-label{min-width:80px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:6px}
.track{flex:1;height:20px;background:rgba(19,33,28,.06);border-radius:999px;overflow:hidden}
.runner{height:100%;border-radius:999px;transition:width .6s ease;width:0}

/* Theme toggle */
.theme-toggle{position:fixed;top:16px;right:16px;z-index:100;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--panel);color:var(--ink);font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;backdrop-filter:blur(8px)}
.theme-toggle:hover{background:var(--ink);color:var(--bg)}

/* Sphere grid (K-RnD-Lab specific) */
.sphere-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.sphere-card{background:var(--card-bg);border:1px solid var(--line);border-radius:22px;padding:22px;display:flex;flex-direction:column;gap:8px}
.sphere-card h3{margin:0 0 4px;font-size:18px}
.sphere-card p{margin:0 0 12px;color:var(--muted);font-size:14px;line-height:1.6}
.sphere-s{border-left:4px solid var(--science)}
.sphere-e{border-left:4px solid var(--entrepreneurship)}
.sphere-t{border-left:4px solid var(--technology)}
.card-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:4px}

/* Study Registry */
.study-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.study-card{background:var(--card-bg);border:1px solid var(--line);border-radius:22px;padding:22px;display:flex;flex-direction:column;gap:10px}
.study-topline{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.study-card h3{margin:0;font-size:17px}
.study-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}
.study-meta{font-size:13px;color:var(--muted);line-height:1.5}
.study-meta strong{color:var(--ink)}

/* Mobile */
@media(max-width:768px){
  .quest-layout{grid-template-columns:1fr}
  .quest-nav{position:static;max-height:none}
  .md-content{padding:20px}
  .mission-grid{grid-template-columns:1fr}
  .mission-header{flex-direction:column}
}