:root {
  --navy: #0A1F44;
  --orange: #FF5A1F;
  --orange-light: #FF7A47;
  --canvas: #F7F8FA;
  --paper: #FFFFFF;
  --muted: #5A6A85;
  --line: #E5E7EB;
  --display: 'Fraunces', Georgia, serif;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--sans); color: var(--navy); line-height: 1.7; background: var(--paper); -webkit-font-smoothing: antialiased; }
a { color: var(--orange); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 820px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 640px) { .container { padding: 0 20px; } }

nav { position: sticky; top: 0; background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 0.5px solid var(--line); z-index: 100; padding: 18px 0; }
.nav-inner { max-width: 1180px; margin: 0 auto; padding: 0 32px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo-text { font-size: 17px; letter-spacing: -0.3px; color: var(--navy); }
.nav-logo-text strong { font-weight: 600; }
.nav-logo-text span { font-weight: 300; }
.nav-logo-sub { font-size: 9px; letter-spacing: 2.5px; color: var(--orange); font-weight: 500; margin-left: 4px; }
.nav-back { font-size: 14px; color: var(--navy); font-weight: 500; }
.nav-back:hover { color: var(--orange); text-decoration: none; }

.hero { padding: 80px 0 40px; border-bottom: 0.5px solid var(--line); margin-bottom: 60px; }
.hero .label { font-size: 11px; letter-spacing: 2.5px; color: var(--orange); font-weight: 600; text-transform: uppercase; display: block; margin-bottom: 16px; }
.hero h1 { font-family: var(--display); font-size: clamp(36px, 5vw, 52px); line-height: 1.1; letter-spacing: -0.02em; font-weight: 400; margin-bottom: 12px; }
.hero .meta { color: var(--muted); font-size: 14px; }

main { padding-bottom: 80px; }
h2 { font-family: var(--display); font-size: 26px; font-weight: 500; margin: 48px 0 16px; letter-spacing: -0.01em; }
h3 { font-size: 17px; font-weight: 600; margin: 28px 0 10px; color: var(--navy); }
p { margin-bottom: 16px; font-size: 16px; color: var(--navy); }
ul, ol { margin: 0 0 16px 24px; }
li { margin-bottom: 8px; font-size: 16px; color: var(--navy); }
strong { font-weight: 600; }
.callout { background: var(--canvas); border-left: 3px solid var(--orange); padding: 20px 24px; border-radius: 0 8px 8px 0; margin: 24px 0; }
.callout p:last-child { margin-bottom: 0; }
.toc { background: var(--canvas); border-radius: 12px; padding: 24px 28px; margin-bottom: 48px; }
.toc h2 { font-family: var(--sans); font-size: 13px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: var(--orange); margin: 0 0 12px; }
.toc ol { list-style: none; margin: 0; counter-reset: toc; }
.toc ol li { counter-increment: toc; margin-bottom: 6px; padding-left: 36px; position: relative; font-size: 15px; }
.toc ol li::before { content: counter(toc, decimal-leading-zero); position: absolute; left: 0; color: var(--orange); font-weight: 600; font-size: 12px; font-family: var(--display); }
.toc ol li a { color: var(--navy); }
.toc ol li a:hover { color: var(--orange); text-decoration: none; }

footer { background: var(--navy); color: rgba(255,255,255,0.7); padding: 48px 0 24px; margin-top: 60px; }
footer .container { max-width: 1180px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; font-size: 12px; flex-wrap: wrap; gap: 12px; }
.footer-links a { color: rgba(255,255,255,0.7); margin-left: 20px; font-size: 13px; }
.footer-links a:hover { color: var(--orange-light); text-decoration: none; }
@media (max-width: 600px) { .footer-links a { margin-left: 0; margin-right: 16px; } }