:root{
  --blue:#0B1F3A;
  --green:#16A34A;
  --gold:#D4AF37;
  --bg:#F8FAFC;
  --text:#111827;
  --muted:#64748b;
  --line:#E5E7EB;
  --white:#FFFFFF;
}
*{box-sizing:border-box}
body{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
h1,h2,h3,h4,.navbar-brand{font-family:Poppins,Inter,system-ui,sans-serif;letter-spacing:0}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--green)}
.site-nav{background:var(--blue);box-shadow:0 8px 22px rgba(11,31,58,.12)}
.navbar-brand span{color:var(--gold)}
.btn{border-radius:8px;font-weight:700}
.btn-success{background:var(--green);border-color:var(--green)}
.btn-success:hover{background:#12833d;border-color:#12833d}
.btn-premium{background:var(--gold);border-color:var(--gold);color:#111827}
.btn-premium:hover{background:#c29d28;border-color:#c29d28;color:#111827}
.hero{background:linear-gradient(135deg,var(--blue) 0%,#12345f 100%);color:#fff;padding:76px 0 54px}
.hero h1{font-size:clamp(2rem,5vw,4.25rem);font-weight:800;line-height:1.06;max-width:900px}
.hero .lead{color:#dbeafe;font-size:1.17rem;max-width:760px}
.hero-panel{background:#fff;color:var(--text);border-radius:12px;padding:24px;border:1px solid rgba(255,255,255,.18);box-shadow:0 22px 55px rgba(0,0,0,.16)}
.hero-panel h2{font-size:1.25rem;color:var(--blue)}
.route-step{padding:14px 16px;border:1px solid var(--line);border-radius:8px;margin-top:10px;background:#fbfdff;font-weight:700}
.eyebrow{display:inline-block;color:var(--green);font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}
.section{padding:64px 0}
.bg-soft{background:#fff}
.section-head{margin-bottom:24px}
.section-head h2{font-size:2rem;color:var(--blue);font-weight:800}
.search-box{display:grid;grid-template-columns:1fr auto;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;box-shadow:0 12px 28px rgba(15,23,42,.06)}
.category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.category-card,.mini-card,.content-card,.course-card,.panel,.pricing-card,.side-card,.stat-card,.auth-card,.success-box{background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 24px rgba(15,23,42,.05)}
.category-card{padding:18px;display:flex;flex-direction:column;gap:8px;min-height:126px}
.category-card strong{color:var(--blue)}
.category-card span,.content-card p,.course-card p,.text-muted{color:var(--muted)}
.content-card,.course-card,.pricing-card,.panel,.side-card,.auth-card,.success-box{padding:22px}
.content-card h3,.content-card h2,.course-card h2,.course-card h3{font-size:1.2rem;color:var(--blue);font-weight:800}
.tag{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:.78rem;font-weight:800;color:var(--blue);background:#fff}
.tag.gold{background:#fff8d6;border-color:#ead17b}
.meta-row{display:flex;justify-content:space-between;color:var(--muted);font-size:.9rem;border-top:1px solid var(--line);padding-top:12px}
.mini-card{padding:18px;font-weight:800}
.conversion{background:var(--blue);color:#fff;padding:58px 0}
.conversion h2{font-size:2.2rem}
.legal-note{color:#d1d5db;max-width:900px;margin:auto;font-size:.9rem}
.site-footer{background:#07162a;color:#d1d5db;padding:46px 0 18px}
.site-footer h5,.site-footer h6{color:#fff}
.site-footer a{display:block;color:#d1d5db;margin:6px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:16px;color:#94a3b8;font-size:.9rem}
.auth-section{min-height:72vh;display:flex;align-items:center;justify-content:center;padding:48px 14px}
.auth-card{width:100%;max-width:860px}
.auth-card.narrow{max-width:460px}
.app-layout,.admin-layout{display:grid;grid-template-columns:260px 1fr;gap:24px;padding-top:32px;padding-bottom:48px}
.app-sidebar,.admin-sidebar{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;height:max-content;position:sticky;top:88px}
.app-sidebar a,.admin-sidebar a{display:block;padding:10px 12px;border-radius:8px;font-weight:700;color:var(--blue)}
.app-sidebar a:hover,.admin-sidebar a:hover{background:#eef6ff}
.topbar{display:flex;justify-content:space-between;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:18px}
.topbar span{display:block;color:var(--muted);font-size:.9rem}
.credit-pill{border:1px solid var(--line);border-radius:999px;padding:6px 10px;color:var(--blue)!important;font-weight:800}
.dashboard-hero{background:var(--blue);color:#fff;border-radius:12px;padding:28px;margin-bottom:18px}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin:18px 0}
.stat-card span{display:block;color:var(--muted);font-weight:700}
.stat-card strong{display:block;color:var(--blue);font-size:1.7rem}
.quick-actions{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.article-page h1{font-size:clamp(2rem,4vw,3.4rem);color:var(--blue);font-weight:800;max-width:980px}
.updated,.breadcrumb-lite{color:var(--muted)}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;margin-top:24px}
.article-content{font-size:1.05rem}
.article-content h2{color:var(--blue);font-size:1.55rem;margin-top:28px}
.article-content h3{font-size:1.18rem;margin-top:22px;color:#1f2937}
.paywall-box,.legal-callout,.conversion-mini,.cta-inline{border:1px solid var(--line);border-radius:10px;padding:22px;background:#fff}
.paywall-box{background:#f9fbff;border-color:#cfe0ff}
.legal-callout{background:#fffbeb;border-color:#fde68a;font-size:.92rem;color:#4b5563;margin:20px 0}
.side-card{margin-bottom:16px}
.side-card a{display:block;margin:10px 0}
.lesson-row{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding:14px 0;font-weight:800}
.history-item{border-top:1px solid var(--line);padding:14px 0}
.pricing-card{height:100%}
.pricing-card.featured{border-color:var(--gold);box-shadow:0 18px 38px rgba(212,175,55,.18)}
.price{font-size:2rem;color:var(--blue);font-weight:800;margin:10px 0}
.admin-sidebar h2{font-size:1.2rem;color:var(--blue);padding:8px 12px}
.admin-main .table{background:#fff;border:1px solid var(--line)}
@media (max-width: 900px){
  .search-box,.app-layout,.admin-layout,.article-grid{grid-template-columns:1fr}
  .app-sidebar,.admin-sidebar{position:static;display:grid;grid-template-columns:repeat(2,1fr)}
  .topbar{align-items:flex-start;flex-direction:column}
}
@media (max-width: 560px){
  .hero{padding:52px 0 38px}
  .section{padding:44px 0}
  .app-sidebar,.admin-sidebar{grid-template-columns:1fr}
  .quick-actions .btn,.search-box .btn{width:100%}
}