/* ==========================================================================
   K-ITAX shared stylesheet
   Used by: index.html, about.html, insights.html, articles/*.html
   ========================================================================== */

:root{
  --navy:#0a1f3d;
  --navy-2:#123163;
  --navy-3:#16386f;
  --gold:#c6a664;
  --gold-dark:#a8863f;
  --bg:#faf9f6;
  --paper:#ffffff;
  --ink:#1c2530;
  --muted:#5b6472;
  --line:#e7e3da;
  --radius:14px;
  --maxw:1120px;
  --maxw-article:760px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
h1,h2,h3,.serif{font-family:'Playfair Display',Georgia,serif;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.wrap-article{max-width:var(--maxw-article);margin:0 auto;padding:0 24px;}
.eyebrow{
  text-transform:uppercase;
  letter-spacing:.14em;
  font-size:12px;
  font-weight:700;
  color:var(--gold-dark);
}

/* NAV */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,31,61,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(198,166,100,0.25);
}
nav.wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:20px;letter-spacing:.02em;}
.brand .mark{
  width:34px;height:34px;
  display:block;object-fit:contain;
  flex-shrink:0;
}
.footer-brand .mark{width:28px;height:28px;}
.navlinks{display:flex;gap:32px;font-size:14px;font-weight:500;}
.navlinks a{color:#dfe6f2;transition:color .2s;}
.navlinks a:hover,.navlinks a.active{color:var(--gold);}
.nav-cta{
  background:var(--gold);color:var(--navy);padding:10px 18px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
}
.nav-cta:hover{background:#d8bd85;}

/* HERO (homepage, full) */
.hero{
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(198,166,100,0.18), transparent 60%),
    linear-gradient(180deg,var(--navy) 0%, var(--navy-2) 100%);
  color:#fff;
  padding:96px 0 84px;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:26px 26px;
  opacity:.4;pointer-events:none;
}
.hero .wrap{position:relative;}
.hero h1{
  font-size:clamp(34px,5vw,58px);
  line-height:1.08;
  margin:18px 0 20px;
  max-width:820px;
}
.hero h1 .accent{color:var(--gold);}
.hero p.lead{
  font-size:18px;color:#c9d3e6;max-width:600px;margin:0 0 36px;
}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:999px;
  font-weight:700;font-size:14px;letter-spacing:.02em;
  transition:transform .15s ease, box-shadow .15s ease;
  cursor:pointer;border:none;font-family:inherit;
}
.btn-gold{background:var(--gold);color:var(--navy);}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(198,166,100,.35);}
.btn-outline{border:1.5px solid rgba(255,255,255,.35);color:#fff;background:transparent;}
.btn-outline:hover{border-color:var(--gold);color:var(--gold);}
.btn-sm{padding:10px 18px;font-size:13px;}

.pillbar{
  margin-top:56px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;gap:10px;flex-wrap:wrap;
}
.pill{
  font-size:12.5px;font-weight:600;color:#dfe6f2;
  border:1px solid rgba(198,166,100,.4);
  padding:7px 14px;border-radius:999px;
  background:rgba(198,166,100,.08);
}

/* PAGE BANNER (about.html, insights.html, article breadcrumb header) */
.page-banner{
  background:linear-gradient(180deg,var(--navy) 0%, var(--navy-2) 100%);
  color:#fff;padding:64px 0 48px;
}
.page-banner h1{font-size:clamp(28px,4vw,42px);margin:12px 0 12px;}
.page-banner p{color:#c9d3e6;max-width:600px;margin:0;font-size:16px;}
.breadcrumb{font-size:13px;color:#aeb9cc;margin-bottom:16px;}
.breadcrumb a{color:#c9d3e6;}
.breadcrumb a:hover{color:var(--gold);}

/* SECTION SHARED */
section{padding:88px 0;}
.section-head{max-width:640px;margin-bottom:48px;}
.section-head h2{font-size:clamp(26px,3.4vw,36px);margin:12px 0 14px;color:var(--navy);}
.section-head p{color:var(--muted);font-size:16px;}
.section-foot{margin-top:36px;}

/* EXPERTISE */
.expertise-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.exp-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;transition:box-shadow .2s, transform .2s;
}
.exp-card:hover{box-shadow:0 14px 30px rgba(10,31,61,.08);transform:translateY(-3px);}
.exp-num{
  font-family:'Playfair Display',serif;color:var(--gold-dark);font-size:22px;font-weight:700;margin-bottom:10px;
}
.exp-card h3{font-family:'Inter';font-size:16px;font-weight:700;margin:0 0 8px;color:var(--navy);}
.exp-card p{font-size:14px;color:var(--muted);margin:0;}

/* INSIGHTS */
.insights{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.insight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.insight-card{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;background:var(--bg);
  transition:box-shadow .2s, transform .2s;
}
a.insight-card:hover{box-shadow:0 14px 30px rgba(10,31,61,.1);transform:translateY(-3px);}
.insight-card.is-soon{opacity:.72;}
.insight-top{
  background:linear-gradient(135deg,var(--navy),var(--navy-3));
  color:#fff;padding:22px;
}
.insight-tag{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--navy);background:var(--gold);padding:4px 10px;border-radius:999px;margin-bottom:14px;
}
.insight-top h3{font-size:19px;line-height:1.35;margin:0;font-family:'Playfair Display',serif;}
.insight-body{padding:22px;flex:1;display:flex;flex-direction:column;}
.insight-body p{color:var(--muted);font-size:14.5px;flex:1;margin:0 0 16px;}
.insight-status{font-size:12.5px;font-weight:700;color:var(--gold-dark);}
.insight-status.is-link{color:var(--navy-2);}

/* Filter pills (insights.html) */
.filterbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px;}
.filter-pill{
  font-size:13px;font-weight:600;color:var(--navy);
  border:1px solid var(--line);background:var(--paper);
  padding:8px 16px;border-radius:999px;cursor:pointer;transition:all .15s;
}
.filter-pill:hover{border-color:var(--gold);}
.filter-pill.active{background:var(--navy);color:#fff;border-color:var(--navy);}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:56px;align-items:start;}
.about-grid p{color:var(--ink);font-size:16px;margin:0 0 18px;}
.about-grid p.muted-note,.about-grid div.muted-note{color:var(--muted);font-size:13.5px;border-left:3px solid var(--gold);padding-left:14px;margin-top:28px;}
.about-grid div.muted-note p{color:var(--muted);font-size:13.5px;}
.factbox{
  background:var(--navy);color:#fff;border-radius:var(--radius);padding:32px;
}
.factbox h4{font-family:'Playfair Display',serif;font-size:18px;margin:0 0 20px;color:var(--gold);}
.fact{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:14px;}
.fact:last-child{border-bottom:none;}
.fact b{font-family:'Playfair Display',serif;font-size:20px;color:#fff;display:block;}
.fact span{color:#aeb9cc;}

/* YOUTUBE */
.yt{background:linear-gradient(180deg,var(--navy-2),var(--navy));color:#fff;}
.yt-flex{display:flex;align-items:center;justify-content:space-between;gap:48px;flex-wrap:wrap;}
.yt-flex .eyebrow{color:var(--gold);}
.yt-flex h2{color:#fff;font-size:clamp(26px,3.4vw,34px);margin:12px 0 16px;max-width:480px;}
.yt-flex p{color:#c9d3e6;max-width:460px;margin:0 0 28px;}
.yt-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(198,166,100,.35);
  border-radius:var(--radius);padding:28px;min-width:280px;flex:1;max-width:360px;
}
.yt-card .play{
  width:52px;height:52px;border-radius:50%;background:var(--gold);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--navy);font-size:20px;
}
.yt-card h3{font-family:'Playfair Display',serif;margin:0 0 10px;font-size:18px;}
.yt-card p{color:#c9d3e6;font-size:14px;margin:0 0 20px;}

/* ARTICLE */
.article-head{padding:56px 0 40px;border-bottom:1px solid var(--line);}
.article-head .insight-tag{background:var(--gold);color:var(--navy);}
.article-head h1{font-size:clamp(28px,4vw,42px);color:var(--navy);margin:16px 0 18px;line-height:1.2;}
.article-head .dek{font-size:17px;color:var(--muted);margin:0 0 20px;max-width:640px;}
.article-head .series-tag{
  font-size:12.5px;font-weight:700;letter-spacing:.02em;color:var(--gold-dark);
  border-left:3px solid var(--gold);padding-left:12px;margin:0 0 22px;max-width:600px;line-height:1.6;
}
.article-meta{display:flex;gap:16px;font-size:13px;color:var(--muted);flex-wrap:wrap;}
.article-meta span{display:flex;align-items:center;gap:6px;}

.article-body{padding:48px 0 0;}
.article-body h2{font-size:24px;color:var(--navy);margin:44px 0 16px;}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:18px;color:var(--navy);margin:30px 0 12px;}
.article-body p{font-size:16.5px;margin:0 0 18px;color:var(--ink);}
.article-body ul,.article-body ol{font-size:16.5px;margin:0 0 20px;padding-left:22px;color:var(--ink);}
.article-body li{margin-bottom:8px;}
.article-body strong{color:var(--navy);}
.callout{
  background:var(--paper);border:1px solid var(--line);border-left:4px solid var(--gold);
  border-radius:10px;padding:20px 22px;margin:28px 0;font-size:15px;color:var(--muted);
}
.callout b{color:var(--navy);}
.table-wrap{overflow-x:auto;margin:24px 0;}
table{width:100%;border-collapse:collapse;font-size:14.5px;}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);}
th{background:var(--navy);color:#fff;font-weight:600;}
tr:nth-child(even) td{background:rgba(198,166,100,.06);}
.faq-item{border-bottom:1px solid var(--line);padding:20px 0;}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item h3{margin:0 0 8px;font-size:16.5px;}
.faq-item p{margin:0;color:var(--muted);font-size:15px;}
.article-disclaimer{
  margin:48px 0 0;padding:22px;background:var(--bg);border:1px solid var(--line);border-radius:12px;
  font-size:13px;color:var(--muted);line-height:1.7;
}
.article-foot-nav{
  display:flex;justify-content:space-between;align-items:center;padding:36px 0 64px;flex-wrap:wrap;gap:16px;
}

/* FOOTER */
footer{background:var(--navy);color:#aeb9cc;padding:52px 0 30px;}
.footer-top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand{color:#fff;font-family:'Playfair Display',serif;font-size:20px;display:flex;align-items:center;gap:10px;}
.footer-links{display:flex;gap:26px;font-size:13.5px;flex-wrap:wrap;}
.footer-links a:hover{color:var(--gold);}
.disclaimer{font-size:12.5px;line-height:1.7;color:#8b96ab;max-width:820px;margin:28px 0 18px;}
.copyright{font-size:12.5px;color:#77839a;}

@media (max-width:900px){
  .expertise-grid{grid-template-columns:repeat(2,1fr);}
  .insight-grid{grid-template-columns:1fr;}
  .about-grid{grid-template-columns:1fr;}
  .navlinks{display:none;}
}
@media (max-width:560px){
  .expertise-grid{grid-template-columns:1fr;}
  section{padding:64px 0;}
  .hero{padding:76px 0 60px;}
}