:root{
  --ink:#15263B;
  --ink-2:#2A3F57;
  --brass:#BFA15A;
  --brass-deep:#9C7F3C;
  --cream:#FAF7F1;
  --cream-2:#F2ECDF;
  --text:#1C2530;
  --muted:#5A6675;
  --white:#FFFFFF;
  --radius:14px;
  --shadow:0 14px 40px rgba(21,38,59,0.10);
  --shadow-sm:0 6px 18px rgba(21,38,59,0.07);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--text);
  background:var(--cream);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Fraunces',Georgia,serif;font-weight:500;line-height:1.15;color:var(--ink);}
a{color:inherit;text-decoration:none;}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px;}
.accent{color:var(--brass-deep);}

/* Buttons */
.btn{
  display:inline-block;text-align:center;background:var(--brass);color:var(--ink);
  font-weight:600;padding:14px 26px;border-radius:999px;
  transition:transform .15s ease, background .15s ease, box-shadow .15s ease;
  box-shadow:var(--shadow-sm);letter-spacing:.2px;border:none;cursor:pointer;
}
.btn:hover{background:#cdb068;transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:.9rem;}
.btn-ghost{
  display:inline-block;border:1.5px solid rgba(255,255,255,.5);color:#fff;
  font-weight:600;padding:13px 24px;border-radius:999px;transition:background .15s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);}
.btn-outline{
  display:inline-block;border:1.5px solid var(--brass);color:var(--brass-deep);
  font-weight:600;padding:12px 22px;border-radius:999px;background:transparent;transition:background .15s ease;
}
.btn-outline:hover{background:rgba(191,161,90,.10);}

/* Header */
header.nav{position:sticky;top:0;z-index:30;background:rgba(250,247,241,.86);backdrop-filter:blur(8px);border-bottom:1px solid rgba(21,38,59,.08);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;}
.brand{display:flex;align-items:center;gap:11px;}
.brand-mark{display:block;flex:none;}
.brand-text{font-family:'Inter',system-ui,sans-serif;font-weight:600;font-size:1rem;letter-spacing:1.8px;color:var(--ink);line-height:1;}
.brand-text em{font-style:normal;font-weight:500;color:var(--brass-deep);letter-spacing:1.6px;}
.nav-links{display:flex;gap:26px;align-items:center;}
.nav-links a{color:var(--ink-2);font-size:.93rem;font-weight:500;transition:color .15s;}
.nav-links a:hover{color:var(--brass-deep);}
@media(max-width:760px){.nav-links a:not(.btn){display:none;}}
@media(max-width:420px){.brand-text em{display:none;}}

/* Catalog hero */
.hero{background:linear-gradient(160deg,var(--ink) 0%,#1B3047 55%,#243d57 100%);color:#EAF0F6;padding:66px 0 70px;}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:1.6px;text-transform:uppercase;color:var(--brass);margin-bottom:16px;}
.hero h1{color:#fff;font-size:2.7rem;letter-spacing:-.5px;}
.hero h1 em{font-style:italic;color:var(--brass);}
.hero p.lead{margin:20px 0 28px;font-size:1.12rem;color:#C7D2DD;max-width:620px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.hero-levels{margin-top:22px;font-size:.9rem;color:#AEBED0;line-height:1.9;}
.hero-levels .ll{font-size:.72rem;font-weight:600;letter-spacing:1.4px;text-transform:uppercase;color:var(--brass);}
.hero-levels strong{color:#EAF0F6;font-weight:600;}
@media(max-width:760px){.hero{padding:48px 0 52px;}.hero h1{font-size:2.05rem;}}

/* Category filter bar */
.filterbar{background:var(--white);border-bottom:1px solid rgba(21,38,59,.08);position:sticky;top:68px;z-index:20;}
.filterbar-inner{display:flex;gap:10px;flex-wrap:wrap;padding:16px 0;}
.chip{font-size:.86rem;font-weight:500;color:var(--ink-2);background:var(--cream-2);border:1px solid rgba(21,38,59,.08);padding:7px 15px;border-radius:999px;transition:background .15s,color .15s;}
.chip:hover{background:var(--brass);color:var(--ink);}

/* Catalog body */
.catalog{padding:56px 0 40px;}
.category{margin-bottom:58px;scroll-margin-top:200px;}
.category-head{border-bottom:2px solid var(--cream-2);padding-bottom:14px;margin-bottom:26px;}
.category-head .kicker{font-family:'Fraunces',serif;color:var(--brass);font-size:1rem;font-weight:600;}
.category-head h2{font-size:1.8rem;margin:4px 0 8px;}
.category-head p{color:var(--muted);font-size:1.02rem;max-width:760px;}

.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
@media(max-width:760px){.card-grid{grid-template-columns:1fr;}}
.course-card{display:flex;flex-direction:column;background:var(--white);border-radius:var(--radius);padding:26px 26px;box-shadow:var(--shadow-sm);border:1px solid rgba(21,38,59,.05);transition:transform .18s ease, box-shadow .18s ease;}
.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.course-card .subtrack{font-size:.76rem;letter-spacing:1.2px;text-transform:uppercase;color:var(--brass-deep);font-weight:600;margin-bottom:8px;}
.course-card h3{font-size:1.2rem;margin-bottom:10px;}
.course-card p.summary{color:var(--muted);font-size:.98rem;flex:1;margin-bottom:16px;}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.badge{font-size:.76rem;font-weight:600;padding:5px 11px;border-radius:999px;background:var(--cream-2);color:var(--ink-2);}
.badge.level{background:rgba(191,161,90,.16);color:var(--brass-deep);}
.badge.draft{background:#F4E2C4;color:#8A6A22;}
.badge.expandable{background:rgba(21,38,59,.06);color:var(--ink-2);}
.card-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;}
.card-foot .details-link{font-weight:600;color:var(--brass-deep);font-size:.94rem;}
.card-foot .details-link:hover{text-decoration:underline;}

/* Course detail page */
.course-hero{background:linear-gradient(160deg,var(--ink) 0%,#1B3047 60%,#243d57 100%);color:#EAF0F6;padding:52px 0 46px;}
.course-hero .backlink{color:#AEBED0;font-size:.9rem;font-weight:500;display:inline-block;margin-bottom:18px;}
.course-hero .backlink:hover{color:var(--brass);}
.course-hero .crumb{font-size:.8rem;letter-spacing:1.4px;text-transform:uppercase;color:var(--brass);font-weight:600;margin-bottom:10px;}
.course-hero h1{color:#fff;font-size:2.3rem;max-width:820px;}
.course-hero .meta-row{margin-top:22px;}
.course-hero .badge{background:rgba(255,255,255,.09);color:#DCE5EE;}
.course-hero .badge.level{background:rgba(191,161,90,.22);color:#F0E4C6;}
.course-hero .summary{margin-top:20px;color:#C7D2DD;font-size:1.1rem;max-width:760px;}

.course-body{padding:52px 0 70px;}
.course-layout{display:grid;grid-template-columns:1fr 280px;gap:48px;align-items:start;}
@media(max-width:860px){.course-layout{grid-template-columns:1fr;}}
.course-content h2{font-size:1.4rem;margin:34px 0 12px;padding-top:6px;}
.course-content h2:first-child{margin-top:0;}
.course-content h3{font-size:1.1rem;margin:22px 0 8px;}
.course-content p{color:var(--text);margin-bottom:14px;}
.course-content ul{list-style:none;margin:6px 0 16px;}
.course-content li{padding:6px 0 6px 24px;position:relative;color:var(--text);}
.course-content li::before{content:"";position:absolute;left:2px;top:15px;width:7px;height:7px;border-radius:50%;background:var(--brass);}
.course-content ul ul{margin:4px 0 4px;}
.course-content ul ul li::before{background:transparent;border:1.5px solid var(--brass);top:13px;width:6px;height:6px;}

/* Course sidebar */
.course-aside{position:sticky;top:96px;}
.aside-card{background:var(--white);border-radius:var(--radius);padding:24px 24px;box-shadow:var(--shadow-sm);border:1px solid rgba(21,38,59,.06);}
.aside-card h4{font-size:.82rem;letter-spacing:1.2px;text-transform:uppercase;color:var(--brass-deep);margin-bottom:14px;}
.aside-row{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--cream-2);font-size:.94rem;}
.aside-row:last-of-type{border-bottom:none;}
.aside-row .k{color:var(--muted);}
.aside-row .v{color:var(--ink);font-weight:600;text-align:right;}
.aside-card .btn{width:100%;margin-top:18px;}
.aside-note{font-size:.82rem;color:var(--muted);margin-top:10px;text-align:center;}

/* Footer */
footer{background:#0F1D2E;color:#9FB0C0;padding:34px 0;}
.foot-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;font-size:.9rem;}
.foot-inner a{color:#C7D4E0;}
.foot-inner a:hover{color:var(--brass);}
.foot-links{display:flex;gap:22px;}
@media(max-width:760px){.foot-inner{justify-content:center;text-align:center;}}