/* ============================================================
   Crypto Intelligence Station — shared design system
   Light / premium theme. Link this file on every page:
   <link rel="stylesheet" href="/assets/site.css">
   ============================================================ */
:root{
  --bg:#FFFFFF; --bg-soft:#F6F7FB; --bg-tint:#F0F1FA;
  --ink:#0B1020; --ink-2:#3F4661; --ink-3:#7A8199;
  --line:#E7E9F2; --line-2:#DDE0EE;
  --brand:#4338CA; --brand-2:#6366F1; --brand-soft:#EEF0FE;
  --green:#059669; --accent-green:#059669; --green-soft:#E7F6EF;
  --red:#DC2626;
  --amber:#B45309; --amber-bg:#FEF6E7; --amber-line:#F4D9A6;
  --shadow:0 1px 2px rgba(16,24,64,.04), 0 8px 24px rgba(16,24,64,.06);
  --shadow-lg:0 8px 40px rgba(67,56,202,.10);
  --radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:760px;margin:0 auto;padding:0 24px}
.serif{font-family:'Fraunces',Georgia,serif}

/* Header */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.hd-in{max-width:1080px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--ink);font-size:16px}
.logo:hover{text-decoration:none}
.logo .mk{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:#fff;font-size:16px;box-shadow:0 6px 16px rgba(67,56,202,.28)}
.logo small{display:block;font-weight:500;font-size:11px;color:var(--ink-3)}
.hnav{display:flex;gap:6px;align-items:center}
.hnav a{padding:8px 13px;border-radius:9px;color:var(--ink-2);font-weight:600;font-size:14px}
.hnav a:hover{background:var(--bg-soft);color:var(--brand);text-decoration:none}
.hnav .btn{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(67,56,202,.25)}
.hnav .btn:hover{background:var(--brand-2);color:#fff}
.hnav a.active{background:var(--brand-soft);color:var(--brand)}
.hnav a.btn.active{background:var(--brand);color:#fff}
/* Guard: legacy pages define .logo as a 48px box — force the shared header layout */
.hd .logo{width:auto !important;height:auto !important;background:none !important;border-radius:0 !important;box-shadow:none !important;display:flex !important;place-items:normal !important;align-items:center !important;gap:11px !important;color:var(--ink) !important}
.hd .logo .mk{width:34px !important;height:34px !important;border-radius:10px !important;background:linear-gradient(135deg,var(--brand),var(--brand-2)) !important;color:#fff !important;box-shadow:0 6px 16px rgba(67,56,202,.28) !important}
.hd .logo small{color:var(--ink-3) !important;font-weight:500 !important}
.hd .hnav a{color:var(--ink-2)}
.hd .hnav a.active{color:var(--brand)}
.hd .hnav a.btn{color:#fff}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:6px}
.hamburger span{display:block;width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:760px){
  .hnav{position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 16px 14px;display:none}
  .hnav.open{display:flex}
  .hnav a{padding:12px}
  .hamburger{display:flex}
}

/* Hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1100px 380px at 50% -130px,var(--bg-tint),transparent 70%)}
.hero-in{padding:56px 0 22px;text-align:center}
.chip{display:inline-flex;align-items:center;gap:7px;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:12.5px;padding:6px 14px;border-radius:999px}
.crumb{font-size:12.5px;color:var(--ink-3);margin-bottom:14px}
.crumb a{color:var(--ink-3)}
h1.title{font-size:clamp(2rem,4.6vw,3.2rem);line-height:1.08;font-weight:600;letter-spacing:-.02em;margin:16px auto 14px;max-width:760px}
h1.title b{color:var(--brand);font-weight:600}
.sub{font-size:1.06rem;color:var(--ink-2);max-width:640px;margin:0 auto 22px}

/* Buttons */
.btn-p,.btn-s{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:12px;font-weight:700;font-size:15px}
.btn-p{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(67,56,202,.28)}
.btn-p:hover{background:var(--brand-2);transform:translateY(-2px);text-decoration:none;color:#fff}
.btn-s{background:#fff;color:var(--ink);border:1px solid var(--line-2)}
.btn-s:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}

/* Sections */
.section{padding:44px 0}
.eyebrow{font-size:12.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--brand)}
h2.sec{font-size:1.7rem;font-weight:600;letter-spacing:-.01em;margin:6px 0 4px}
.sec-lead{color:var(--ink-2);font-size:1rem;max-width:680px;margin-bottom:22px}

/* Prose (legal pages, articles) */
.prose{font-size:1rem;color:var(--ink-2)}
.prose h2{font-size:1.5rem;font-weight:700;color:var(--ink);margin:1.8rem 0 .5rem;letter-spacing:-.01em}
.prose h3{font-size:1.18rem;font-weight:700;color:var(--ink);margin:1.3rem 0 .4rem}
.prose p{margin:0 0 1rem}
.prose ul,.prose ol{margin:0 0 1rem 1.3rem}
.prose li{margin:0 0 .4rem}
.prose strong{color:var(--ink)}
.prose a{color:var(--brand)}
.prose blockquote{border-left:3px solid var(--brand);background:var(--bg-soft);padding:12px 16px;border-radius:0 10px 10px 0;margin:0 0 1rem;color:var(--ink-2)}
.prose table{width:100%;border-collapse:collapse;margin:0 0 1.2rem;font-size:.95rem}
.prose th,.prose td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
.prose th{background:var(--bg-soft);font-weight:700;color:var(--ink)}
.updated{font-size:13px;color:var(--ink-3);margin-bottom:18px}

/* Cards */
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
@media(max-width:640px){.grid-2{grid-template-columns:1fr}}

/* FAQ accordion */
.faq details{background:#fff;border:1px solid var(--line);border-radius:13px;margin-bottom:10px;box-shadow:var(--shadow);overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:16px 20px;font-weight:700;font-size:15px;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';color:var(--brand);font-size:22px;font-weight:700}
.faq details[open] summary::after{content:'\2013'}
.faq details p{padding:0 20px 18px;color:var(--ink-2);font-size:14px}

/* Callout / disclaimer */
.callout{background:linear-gradient(135deg,var(--brand-soft),#fff);border:1px solid var(--line-2);border-radius:16px;padding:18px 22px;margin:22px 0;box-shadow:var(--shadow);color:var(--ink-2);font-size:14.5px}
.disc{font-size:12.5px;color:var(--ink-3);background:var(--amber-bg);border:1px solid var(--amber-line);border-radius:12px;padding:14px 18px;margin-top:24px;line-height:1.6}
.disc b{color:var(--amber)}

/* Footer */
.ft{background:var(--bg-soft);color:var(--ink-2);margin-top:56px;border-top:1px solid var(--line)}
.ft .fg{max-width:1080px;margin:0 auto;padding:44px 24px 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:30px}
.ft h5{color:var(--ink);font-size:13px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px}
.ft ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.ft a{color:var(--ink-2);font-size:14px}
.ft a:hover{color:var(--brand)}
.ft .fbot{border-top:1px solid var(--line);padding:18px 24px;text-align:center;font-size:12.5px;color:var(--ink-3);max-width:1080px;margin:0 auto;line-height:1.6}