:root{
  --ink:#16233B;        /* deep navy */
  --ink-soft:#2C3A54;
  --gold:#C89B3C;       /* accent */
  --gold-soft:#E8CF9A;
  --parchment:#F3EEE3;  /* bg */
  --card:#FFFFFF;
  --route:#2B4038;      /* green */
  --route-soft:#E0EAE3;
  --red:#B23A3A;
  --muted:#6B7686;
  --line:#E3DCCB;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--parchment);
  color:var(--ink);
  font-family:"Merriweather",Georgia,serif;
  line-height:1.6;
  font-size:17px;
}
.shell{max-width:860px;margin:0 auto;padding:2.4rem 1.4rem 4rem}
a{color:var(--route);text-decoration:none}
a:hover{text-decoration:underline}

/* hero */
.hero-top{display:flex;align-items:center;gap:.8rem;margin-bottom:1rem}
.brand{font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);font-size:.9rem}
.chip{display:inline-block;font-family:"Work Sans",sans-serif;font-size:.72rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;padding:.28rem .7rem;border-radius:999px}
.chip-learning{background:var(--gold);color:var(--ink)}
.chip-module{background:var(--route);color:#fff}
h1{font-size:2.3rem;line-height:1.15;margin:.2rem 0 .6rem}
.lead{font-size:1.12rem;color:var(--ink-soft);max-width:60ch}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:1.8rem;margin:1.6rem 0;box-shadow:0 1px 3px rgba(22,35,59,.06)}
.card h2{margin-top:0;font-size:1.35rem}
.muted{color:var(--muted);font-size:.92rem}
.inline-row{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:1rem}
input[type=text]{flex:1;min-width:220px;padding:.65rem .9rem;border:1px solid var(--line);border-radius:10px;font-family:"Merriweather",serif;font-size:1rem}
.btn{display:inline-block;padding:.6rem 1.2rem;border:none;border-radius:10px;background:var(--gold);color:var(--ink);font-family:"Work Sans",sans-serif;font-weight:700;font-size:.95rem;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--gold-soft);text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink-soft);border:1px solid var(--line)}
.btn.small{padding:.4rem .8rem;font-size:.85rem}

/* learners */
.learners{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:.5rem}
.learner{font-family:"Work Sans",sans-serif;font-weight:600;padding:.5rem 1rem;border-radius:999px;border:1px solid var(--line);cursor:pointer;background:transparent;color:var(--ink-soft)}
.learner.active{background:var(--route);color:#fff;border-color:var(--route)}
.learner .pct{opacity:.7;font-weight:500;margin-left:.4rem}

/* modules */
.modules{list-style:none;padding:0;margin:1rem 0 0}
.modules li{margin:.7rem 0}
.module a{display:block;border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.2rem;color:var(--ink)}
.module a:hover{background:var(--route-soft);text-decoration:none;border-color:var(--route)}
.m-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:.3rem}
.m-order{font-family:"Work Sans",sans-serif;font-size:.78rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--gold);}
.m-status{font-family:"Work Sans",sans-serif;font-size:.72rem;font-weight:600;padding:.2rem .6rem;border-radius:999px}
.m-status[data-status=todo]{background:#EEF0F4;color:var(--muted)}
.m-status[data-status=inprogress]{background:var(--gold-soft);color:var(--ink)}
.m-status[data-status=done]{background:var(--route-soft);color:var(--route)}
.module h3{margin:.1rem 0 .2rem;font-size:1.15rem}
.m-desc{margin:0;color:var(--muted);font-size:.92rem}

/* module page */
.crumbs{margin-bottom:1.2rem;font-family:"Work Sans",sans-serif;font-size:.95rem}
.module-head{margin-bottom:1.4rem}
.module-head h1{margin:.5rem 0 .3rem}
.tagline{color:var(--ink-soft);font-size:1.08rem;margin:0}
.principles{margin-top:.9rem;display:flex;flex-wrap:wrap;gap:.5rem}
.principle{font-family:"Work Sans",sans-serif;font-size:.82rem;background:#F0F4FE;border:1px solid #D5E0F5;color:#2C4A8A;padding:.3rem .7rem;border-radius:999px}

.concepts h2{font-size:1.25rem;margin-top:1.8rem;border-top:1px solid var(--line);padding-top:1.4rem}
.concepts h2:first-child{border-top:none;padding-top:0}
.concepts strong{color:var(--ink)}

/* assessment */
.assessment h2{font-size:1.4rem}
#assessment-root{margin-top:.5rem}
.assess-badge{font-family:"Work Sans",sans-serif;font-size:.78rem;color:var(--gold);font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.prompt{background:#FAF7EF;border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;margin:.9rem 0}
.prompt .tier{font-family:"Work Sans",sans-serif;font-weight:700;color:var(--gold)}
.prompt .plabel{font-size:.8rem;color:var(--muted);font-family:"Work Sans",sans-serif}
.exercise{background:var(--route-soft);border-radius:12px;padding:1rem 1.2rem;margin:.9rem 0}
.exercise h4{margin:.1rem 0 .4rem;color:var(--route)}
.exercise .elabel{font-size:.78rem;color:var(--route);font-family:"Work Sans",sans-serif;font-weight:700;letter-spacing:.04em;text-transform:uppercase}

/* interactive loop */
.loop{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;margin:1.2rem 0}
.loop-step{flex:1;min-width:130px;text-align:center;border:2px solid var(--gold-soft);background:#FDFBF3;border-radius:12px;padding:.9rem .6rem}
.loop-step .l-key{font-family:"Work Sans",sans-serif;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--gold)}
.loop-step .l-val{min-height:2.4em;margin-top:.3rem;font-size:.95rem;color:var(--ink)}
.loop-arrow{font-size:1.4rem;color:var(--gold);font-weight:700}
.loop select{width:100%;margin-top:.4rem;padding:.4rem;border:1px solid var(--line);border-radius:8px;font-family:"Merriweather",serif;font-size:.9rem}

select,.field{width:100%;padding:.6rem .8rem;margin:.45rem 0;border:1px solid var(--line);border-radius:10px;font-family:"Merriweather",serif;font-size:1rem;background:#fff}
textarea{width:100%;min-height:90px;padding:.6rem .8rem;margin:.45rem 0;border:1px solid var(--line);border-radius:10px;font-family:"Merriweather",serif;font-size:1rem;resize:vertical}
label{font-family:"Work Sans",sans-serif;font-size:.85rem;font-weight:600;color:var(--ink-soft)}
.slider-row{margin:.9rem 0}
.slider-row .ends{display:flex;justify-content:space-between;font-family:"Work Sans",sans-serif;font-size:.8rem;color:var(--muted)}
input[type=range]{width:100%;accent-color:var(--route)}
.q{font-weight:700;margin:.6rem 0 .2rem}
.feedback{border-left:4px solid var(--gold);background:#FDFBF3;padding:.4rem .9rem;margin:.9rem 0;font-style:italic;color:var(--ink-soft)}
.saved-banner{background:var(--route-soft);color:var(--route);padding:.7rem 1rem;border-radius:10px;margin:1rem 0;font-family:"Work Sans",sans-serif;font-weight:600}
.pager{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}

/* footer */
.foot{max-width:860px;margin:0 auto;padding:1.5rem 1.4rem 2.5rem;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem;color:var(--muted);font-size:.82rem;font-family:"Work Sans",sans-serif}
.foot em{font-style:normal;font-weight:600}

@media(max-width:560px){
  h1{font-size:1.8rem}
  .shell{padding:1.6rem 1rem 3rem}
  .card{padding:1.3rem}
}