/* Makers on Muse — design system v2.
   Japandi v4 tokens. Kubrick symmetry, Jobs reduction, Dye tactility.
   Type: system sans + mono only. Radii 8/12/16. No linear gradients. */
:root{
  --paper:#F9F6F0;
  --stone-100:#F5F1EB;
  --stone-200:#E8E0D5;
  --stone-300:#D4C4B0;
  --stone-400:#B8A99A;
  --ink:#2A2A2A;
  --ink-soft:#5A564F;
  --ink-faint:#8A8478;
  --terracotta:#C17C60;
  --terracotta-deep:#A5664F;
  --moss:#8A9A8B;
  --moss-deep:#6F7F70;
  --clay:#A67B5B;
  --void:#1E2022;
  --card:#FFFDF9;
  --radius-s:8px;
  --radius-m:12px;
  --radius-l:16px;
  --spring:cubic-bezier(0.34,1.56,0.64,1);
  --shadow:0 1px 2px rgba(42,42,42,.07),0 6px 18px rgba(42,42,42,.08);
  --shadow-lift:0 2px 4px rgba(42,42,42,.08),0 16px 40px rgba(42,42,42,.13);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--terracotta-deep);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--terracotta)}
::selection{background:var(--stone-200)}
.skip{
  position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);
  padding:10px 16px;border-radius:0 0 var(--radius-s) 0;z-index:100;font-family:var(--mono);font-size:14px;
}
.skip:focus{left:0}

/* ---------- layout ---------- */
.wrap{max-width:1020px;margin:0 auto;padding:0 22px}
.wrap-narrow{max-width:720px;margin:0 auto;padding:0 22px}
section{padding:64px 0}
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--clay);margin:0 0 14px;
}
h1{font-size:clamp(36px,6.4vw,60px);line-height:1.1;letter-spacing:-.025em;margin:0 0 18px}
h2{font-size:clamp(25px,4vw,35px);line-height:1.2;letter-spacing:-.015em;margin:0 0 14px}
h3{font-size:20px;margin:0 0 8px;letter-spacing:-.01em}
.lede{font-size:19px;color:var(--ink-soft);max-width:36em}
.muted{color:var(--ink-soft)}
.small{font-size:14px}
.center{text-align:center}
.center .lede{margin-left:auto;margin-right:auto}

/* ---------- nav: 44px, mono, sticky ---------- */
.nav{
  position:sticky;top:0;z-index:50;height:44px;
  background:rgba(249,246,240,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--stone-200);
}
.nav-inner{max-width:1020px;margin:0 auto;padding:0 22px;height:44px;display:flex;align-items:center;gap:18px;position:relative}
.brand{font-family:var(--mono);font-weight:700;font-size:14px;color:var(--ink);text-decoration:none;white-space:nowrap}
.brand .dot{color:var(--terracotta)}
.nav-links{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav-links a{
  font-family:var(--mono);font-size:13px;color:var(--ink-soft);text-decoration:none;
  padding:6px 11px;border-radius:var(--radius-s);transition:background .18s ease,color .18s ease;
}
.nav-links a:hover{background:var(--stone-100);color:var(--ink)}
.nav-links a.active{background:var(--ink);color:var(--paper)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--stone-300);border-radius:var(--radius-s);padding:5px 10px;font-family:var(--mono);font-size:13px;color:var(--ink);cursor:pointer}

/* ---------- Kubrick stage hero ---------- */
.stage{padding:88px 0 72px;text-align:center;overflow:hidden}
.stage .mabel{margin:34px auto 30px}
.stage h1{max-width:14em;margin-left:auto;margin-right:auto}
.stage .lede{margin:0 auto}
.btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:30px}

/* ---------- tactile buttons (Dye) ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:15px;font-weight:600;text-decoration:none;
  padding:13px 26px;border-radius:var(--radius-m);cursor:pointer;border:1px solid transparent;
  box-shadow:0 1px 2px rgba(42,42,42,.08),0 6px 18px rgba(42,42,42,.10);
  transition:transform .18s var(--spring),box-shadow .22s ease,background .18s ease;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--terracotta);color:#FFFDF9;border-color:var(--terracotta-deep)}
.btn-primary:hover{background:var(--terracotta-deep);color:#FFFDF9;box-shadow:var(--shadow-lift);transform:translateY(-1px)}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--stone-300)}
.btn-ghost:hover{box-shadow:var(--shadow-lift);transform:translateY(-1px);color:var(--ink)}
.btn-sm{padding:9px 18px;font-size:13px}

/* ---------- cards ---------- */
.cards{display:grid;gap:20px;margin-top:34px}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--card);border:1px solid var(--stone-200);border-radius:var(--radius-l);
  padding:30px 28px;box-shadow:var(--shadow);
  transition:transform .25s var(--spring),box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.card .step{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--clay);
  display:block;margin-bottom:10px;
}

/* ---------- level cards ---------- */
.level-card{
  background:var(--card);border:1px solid var(--stone-200);border-radius:var(--radius-l);
  padding:34px 32px;box-shadow:var(--shadow);margin:0 0 22px;
  display:grid;grid-template-columns:1fr 150px;gap:26px;align-items:center;
  transition:transform .25s var(--spring),box-shadow .25s ease;
}
.level-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.level-head{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.num{
  width:40px;height:40px;flex:none;border-radius:50%;
  background:var(--ink);color:var(--paper);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:17px;
}
.num.alt{background:var(--terracotta)}
.level-tag{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--clay)}
.task{
  border-left:3px solid var(--terracotta);background:var(--stone-100);
  border-radius:0 var(--radius-m) var(--radius-m) 0;padding:16px 20px;margin:16px 0;
  font-size:16px;
}
.task .t-label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--clay);display:block;margin-bottom:6px}
.spec{display:flex;flex-wrap:wrap;gap:8px 22px;margin:14px 0 0;padding:0;list-style:none}
.spec li{font-family:var(--mono);font-size:13px;color:var(--ink-soft)}
.spec li strong{color:var(--ink)}
.level-mabel{display:flex;justify-content:center}
.exhibit{border-style:dashed}

/* ---------- tables ---------- */
table.clean{width:100%;border-collapse:collapse;margin:22px 0;background:var(--card);border-radius:var(--radius-m);overflow:hidden;box-shadow:var(--shadow);font-size:15px}
table.clean th,table.clean td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--stone-200)}
table.clean th{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--clay);background:var(--stone-100)}
table.clean tr:last-child td{border-bottom:none}
table.clean td.num-cell,table.clean td.mono{font-family:var(--mono)}
.board-scroll{overflow-x:auto;margin-top:24px}
.crown-legend{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}
.crown-legend span{font-size:14px;background:var(--card);border:1px solid var(--stone-200);border-radius:999px;padding:6px 14px}

/* ---------- meta ---------- */
.meta-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}
.badge{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  padding:4px 10px;border-radius:99px;margin:0 6px 6px 0;
}
.badge.easy{background:#E7EDE4;color:var(--moss-deep)}
.badge.medium{background:#F3E8D8;color:var(--clay)}
.badge.involved{background:#EBD9D2;color:var(--terracotta-deep)}
.unlock{font-family:var(--mono);font-size:13px;color:var(--ink-soft);margin:8px 0 0}
.diag{margin-top:44px}
.diag li{margin:10px 0}

/* ---------- share builder ---------- */
.builder{background:var(--card);border:1px solid var(--stone-200);border-radius:var(--radius-l);padding:30px;box-shadow:var(--shadow);margin-top:28px}
.star-row{display:flex;gap:10px;margin:12px 0 20px}
.star-btn{
  width:52px;height:52px;font-size:26px;border-radius:var(--radius-m);cursor:pointer;
  background:var(--stone-100);border:1px solid var(--stone-200);
  transition:transform .18s var(--spring),box-shadow .2s ease;
}
.star-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.star-btn:active{transform:scale(.94)}
.field-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.field label{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--clay);margin-bottom:6px}
.field input{
  width:100%;font-family:var(--mono);font-size:15px;padding:10px 12px;color:var(--ink);
  background:var(--paper);border:1px solid var(--stone-300);border-radius:var(--radius-s);
}
.field input:focus{outline:2px solid var(--terracotta);outline-offset:1px;border-color:var(--terracotta)}
.share-out{
  font-family:var(--mono);font-size:15px;line-height:1.7;white-space:pre-wrap;
  background:var(--void);color:#EDE8DE;border-radius:var(--radius-m);padding:22px;margin:0 0 18px;
}

/* ---------- accordions ---------- */
details.acc{
  background:var(--card);border:1px solid var(--stone-200);border-radius:var(--radius-m);
  margin:0 0 12px;box-shadow:var(--shadow);overflow:hidden;
}
details.acc summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:600;font-size:17px;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
details.acc summary::-webkit-details-marker{display:none}
details.acc summary::after{content:"+";font-family:var(--mono);color:var(--terracotta);font-size:22px;flex:none}
details.acc[open] summary::after{content:"–"}
details.acc .acc-body{padding:0 22px 20px;color:var(--ink-soft)}

/* ---------- empty states ---------- */
.empty-board{text-align:center;padding:40px 0}
.empty-board .mabel{margin:0 auto 8px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--stone-200);margin-top:40px;padding:44px 0 54px;background:var(--stone-100)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.foot-grid h4{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--clay);margin:0 0 12px}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin:7px 0}
.foot-grid a{color:var(--ink-soft);text-decoration:none;font-size:15px}
.foot-grid a:hover{color:var(--terracotta-deep)}
.foot-note{margin-top:34px;padding-top:20px;border-top:1px solid var(--stone-200);font-size:13px;color:var(--ink-faint);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- misc ---------- */
.formula{
  font-family:var(--mono);font-size:clamp(15px,2.6vw,20px);text-align:center;
  background:var(--void);color:#EDE8DE;border-radius:var(--radius-l);padding:30px 22px;margin:30px 0;
  box-shadow:var(--shadow);line-height:1.9;
}
.formula .op{color:var(--terracotta)}
.kicker{font-family:var(--mono);font-size:13px;color:var(--ink-faint);margin-top:10px}
.divider{height:1px;background:var(--stone-200);border:none;margin:44px 0}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .cols-3{grid-template-columns:1fr}
  .cols-2{grid-template-columns:1fr}
  .level-card{grid-template-columns:1fr}
  .level-mabel{order:-1}
  .level-mabel .mabel{max-width:130px}
  .meta-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr}
  .stage{padding:64px 0 56px}
  section{padding:48px 0}
}
@media (max-width:720px){
  .nav-links{
    display:none;position:absolute;top:44px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:var(--paper);border-bottom:1px solid var(--stone-200);padding:8px;gap:2px;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:10px 14px}
  .nav-toggle{display:block}
  .nav-inner{gap:12px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001s !important;transition-duration:.001s !important}
}