:root{
  --brand:#3730a3;
  --brand-dark:#1e1b6b;
  --brand-light:#6366f1;
  --amber:#f59e0b;
  --amber-dark:#b45309;
  --text:#1f2937;
  --text-soft:#4b5563;
  --text-mute:#6b7280;
  --bg:#f9fafb;
  --bg-card:#ffffff;
  --border:#e5e7eb;
  --border-soft:#f3f4f6;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Source Serif Pro',Georgia,'Times New Roman',serif;
  font-size:17px;
  line-height:1.7;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline;color:var(--brand-dark)}

/* ====== TOP NAV ====== */
.nav{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:50;font-family:'Inter',system-ui,sans-serif;font-size:14px}
.nav-inner{max-width:1180px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:24px;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--brand);font-size:16px}
.nav-logo img{height:32px}
.nav ul{list-style:none;display:flex;gap:24px;align-items:center}
.nav ul a{color:var(--text-soft);font-weight:500;font-size:14px;letter-spacing:.01em}
.nav ul a:hover{color:var(--brand);text-decoration:none}

/* ====== LAYOUT ====== */
.container{max-width:1180px;margin:0 auto;padding:32px 24px}
.layout-2col{display:grid;grid-template-columns:1fr 280px;gap:48px;align-items:start}
@media (max-width:900px){.layout-2col{grid-template-columns:1fr;gap:32px}}

/* ====== HERO ====== */
.hero{background:linear-gradient(135deg,#eef2ff 0%,#f5f3ff 100%);padding:64px 24px 56px;border-bottom:1px solid var(--border)}
.hero-inner{max-width:780px;margin:0 auto;text-align:center}
.hero-kicker{font-family:'Inter',sans-serif;font-size:12px;font-weight:600;color:var(--brand);letter-spacing:.18em;text-transform:uppercase;margin-bottom:14px}
.hero h1{font-family:'Source Serif Pro',serif;font-size:42px;font-weight:700;line-height:1.15;color:var(--text);margin-bottom:18px;letter-spacing:-.02em}
.hero p{font-size:18px;color:var(--text-soft);max-width:640px;margin:0 auto}
.search-box{margin:32px auto 0;max-width:560px;background:#fff;border:2px solid var(--border);border-radius:12px;padding:14px 20px;display:flex;align-items:center;gap:12px;box-shadow:0 4px 12px rgba(55,48,163,.08)}
.search-box svg{flex-shrink:0;color:var(--text-mute)}
.search-box input{border:0;outline:0;flex:1;font-family:inherit;font-size:16px;color:var(--text);background:transparent}
.search-box input::placeholder{color:var(--text-mute)}

/* ====== HEADINGS ====== */
h1,h2,h3,h4{font-family:'Source Serif Pro',serif;letter-spacing:-.01em;color:var(--text)}
h1{font-size:36px;font-weight:700;line-height:1.2;margin-bottom:16px}
h2{font-size:26px;font-weight:700;line-height:1.3;margin:40px 0 16px;padding-bottom:8px;border-bottom:2px solid var(--brand-light);display:inline-block}
h3{font-size:20px;font-weight:600;line-height:1.4;margin:24px 0 12px;color:var(--brand-dark)}
h4{font-size:17px;font-weight:600;margin:18px 0 10px}

/* ====== PARAGRAPHS / LISTS ====== */
.article p{margin:14px 0}
.article ul,.article ol{margin:14px 0 14px 24px}
.article li{margin:6px 0}
.article strong{color:var(--text);font-weight:600}
.article a{color:var(--brand);font-weight:500;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}

/* ====== QUICK ANSWER BOX ====== */
.quick-answer{background:linear-gradient(135deg,#eef2ff 0%,#fef3c7 100%);border-left:5px solid var(--amber);border-radius:10px;padding:22px 26px;margin:28px 0}
.quick-answer-label{font-family:'Inter',sans-serif;font-size:11px;font-weight:700;color:var(--amber-dark);letter-spacing:.18em;text-transform:uppercase;margin-bottom:10px;display:block}
.quick-answer p{font-size:17px;line-height:1.6;color:var(--text);margin:0}

/* ====== CRUMB ====== */
.crumb{font-family:'Inter',sans-serif;font-size:13px;color:var(--text-mute);margin-bottom:24px}
.crumb a{color:var(--brand);text-decoration:none}
.crumb a:hover{text-decoration:underline}

/* ====== AUTHOR BLOCK ====== */
.author-card{background:#fff;border:1px solid var(--border);border-radius:10px;padding:20px;margin:0 0 24px;font-family:'Inter',sans-serif;font-size:13.5px;color:var(--text-soft)}
.author-card-name{font-weight:700;color:var(--text);font-size:15px;margin-bottom:4px}
.author-card-title{color:var(--brand);font-size:12.5px;font-weight:600;margin-bottom:10px;letter-spacing:.02em}
.author-card-bio{font-size:13px;line-height:1.55}
.author-meta{display:flex;gap:18px;font-family:'Inter',sans-serif;font-size:13px;color:var(--text-mute);margin-top:18px;padding-top:14px;border-top:1px solid var(--border-soft)}

/* ====== SIDEBAR ====== */
.sidebar{position:sticky;top:80px;font-family:'Inter',sans-serif;font-size:14px}
.sidebar h3{font-family:'Inter',sans-serif;font-size:11.5px;font-weight:700;color:var(--text-mute);letter-spacing:.16em;text-transform:uppercase;margin:24px 0 12px;border:0;padding:0}
.sidebar h3:first-child{margin-top:0}
.sidebar ul{list-style:none}
.sidebar li{margin:8px 0;line-height:1.4}
.sidebar a{color:var(--text-soft);font-size:13.5px;display:block;padding:6px 10px;border-radius:6px;transition:all .15s}
.sidebar a:hover{background:#eef2ff;color:var(--brand);text-decoration:none}
.sidebar a.active{background:var(--brand);color:#fff;font-weight:500}

/* ====== CATEGORIES GRID (home) ====== */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin:32px 0}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:24px;transition:all .2s;text-decoration:none;display:block}
.cat-card:hover{border-color:var(--brand);box-shadow:0 8px 20px rgba(55,48,163,.08);transform:translateY(-2px);text-decoration:none}
.cat-card-icon{width:42px;height:42px;background:linear-gradient(135deg,#eef2ff,#fef3c7);border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:20px}
.cat-card-title{font-family:'Source Serif Pro',serif;font-size:18px;font-weight:600;color:var(--text);margin-bottom:6px}
.cat-card-count{font-family:'Inter',sans-serif;font-size:12px;color:var(--text-mute);margin-bottom:10px}
.cat-card-desc{font-size:14px;line-height:1.5;color:var(--text-soft);font-family:'Inter',sans-serif}

/* ====== TOP QUESTIONS LIST ====== */
.q-list{margin:24px 0}
.q-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:18px 22px;margin:10px 0;transition:all .15s;text-decoration:none;display:block}
.q-item:hover{border-color:var(--brand);text-decoration:none}
.q-item-tag{font-family:'Inter',sans-serif;font-size:11px;font-weight:600;color:var(--amber-dark);letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.q-item-title{font-family:'Source Serif Pro',serif;font-size:18px;font-weight:600;color:var(--text);line-height:1.4;margin:4px 0}
.q-item-meta{font-family:'Inter',sans-serif;font-size:12.5px;color:var(--text-mute);margin-top:6px}

/* ====== RELATED Q&A ====== */
.related{background:#f9fafb;border-radius:10px;padding:24px;margin:40px 0 0;font-family:'Inter',sans-serif}
.related-title{font-family:'Inter',sans-serif;font-size:11.5px;font-weight:700;color:var(--text-mute);letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}
.related ul{list-style:none;margin:0}
.related li{margin:8px 0}
.related a{color:var(--brand);font-size:14.5px;font-weight:500}

/* ====== FOOTER ====== */
.site-footer{background:#fff;border-top:1px solid var(--border);margin-top:80px;padding:48px 0 32px;font-family:'Inter',sans-serif;font-size:14px}
.footer-inner{max-width:1180px;margin:0 auto;padding:0 24px}
.foot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:32px}
@media (max-width:760px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
.foot-grid h4{font-family:'Inter',sans-serif;font-size:11.5px;font-weight:700;color:var(--text-mute);letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}
.foot-grid ul{list-style:none}
.foot-grid li{margin:6px 0}
.foot-grid a{color:var(--text-soft);font-size:13.5px}
.foot-grid a:hover{color:var(--brand)}
.foot-bottom{border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;align-items:center;color:var(--text-mute);font-size:12.5px}
@media (max-width:600px){.foot-bottom{flex-direction:column;gap:10px;text-align:center}}

/* ====== EDITORIAL NOTE ====== */
.edit-note{border-left:3px solid var(--border);padding:6px 0 6px 16px;margin:20px 0;font-style:italic;color:var(--text-mute);font-size:14.5px;line-height:1.5}

/* ====== TABLE ====== */
table{width:100%;border-collapse:collapse;font-family:'Inter',sans-serif;font-size:14px;margin:24px 0}
th{background:var(--bg);text-align:left;padding:12px 14px;font-weight:600;font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--text-mute);border-bottom:2px solid var(--border)}
td{padding:12px 14px;border-bottom:1px solid var(--border-soft);font-size:14px}

/* ====== CTA ====== */
.cta-box{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;padding:28px 32px;border-radius:12px;margin:32px 0;text-align:center}
.cta-box p{color:#e0e7ff;margin:8px 0 16px}
.cta-btn{display:inline-block;background:var(--amber);color:var(--brand-dark);font-family:'Inter',sans-serif;font-weight:700;font-size:14px;padding:12px 28px;border-radius:8px;text-decoration:none}
.cta-btn:hover{background:#fde68a;text-decoration:none;color:var(--brand-dark)}