:root {
  --ink: #1d2532; --stone: #4b5a6e; --paper: #f6f4ef;
  --accent: #2e4a66; --accent-deep: #223a52; --accent-soft: #e6ecf2;
  --night: #0e1726; --night-2: #16233a; --snow: #edf1f6;
  --gold: #c19a55; --line: #e2dcd2;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: Georgia, 'Times New Roman', serif; background: var(--paper); color: var(--ink); line-height: 1.75; font-size: 17px; }
.sans { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--accent); color: #fff; }

header { background: rgba(14,23,38,.9); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: var(--snow); padding: .95rem 1.5rem; position: sticky; top: 0; z-index: 20; }
.nav { max-width: 1020px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .6rem; }
.nav .brand { font-family: Georgia, serif; letter-spacing: .2em; font-size: .92rem; text-transform: uppercase; color: var(--snow); text-decoration: none; }
.nav ul { list-style: none; display: flex; gap: 1.35rem; align-items: center; flex-wrap: wrap; }
.nav a { color: #b6c2d2; text-decoration: none; font-size: .84rem; }
.nav a:hover { color: #fff; }
.lang { border: 1px solid rgba(255,255,255,.28); border-radius: 3px; padding: .22rem .6rem; font-size: .78rem; letter-spacing: .08em; }
.lang b { color: #fff; font-weight: 600; }
.lang a { color: #93a3b7; }

.pagehead { background: var(--night-2); color: var(--snow); padding: 3.6rem 1.5rem 3rem; text-align: center; }
.pagehead .kicker { letter-spacing: .3em; text-transform: uppercase; font-size: .72rem; color: #9db0c5; }
.pagehead h1 { font-size: clamp(1.6rem, 4.3vw, 2.5rem); font-weight: 400; letter-spacing: .05em; margin: .8rem auto .7rem; max-width: 46rem; }
.pagehead .rule { width: 3.2rem; height: 2px; background: var(--gold); margin: 0 auto 1rem; }
.pagehead p { color: #c9d4e1; max-width: 40rem; margin: 0 auto; }

main.article { max-width: 760px; margin: 0 auto; padding: 2.8rem 1.5rem 0; }
main.article h2 { font-weight: 400; font-size: 1.45rem; letter-spacing: .03em; margin: 2.4rem 0 1rem; }
main.article h2::after { content: ""; display: block; width: 2.6rem; height: 2px; background: var(--gold); margin-top: .5rem; }
main.article p { margin-bottom: 1.05rem; }
main.article ul, main.article ol { margin: 0 0 1.05rem 1.3rem; }
main.article li { margin-bottom: .45rem; }
main.article figure { margin: 1.8rem 0; }
main.article figure img { border-radius: 4px; }
main.article figcaption { font-size: .78rem; color: var(--stone); margin-top: .45rem; }
main.article table { border-collapse: collapse; width: 100%; margin: 1.2rem 0 1.6rem; font-size: .95rem; }
main.article th, main.article td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
main.article th { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--stone); }
.note { background: #fff; border-left: 3px solid var(--gold); padding: 1rem 1.3rem; margin: 1.6rem 0; color: var(--stone); font-size: .95rem; }

blockquote { border-left: 3px solid var(--gold); padding-left: 1.25rem; margin: 1.7rem 0; font-style: italic; color: var(--stone); font-size: 1.02rem; }

.bookcta { display: grid; grid-template-columns: 110px 1fr; gap: 1.5rem; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 1.5rem 1.7rem; margin: 3rem 0 1rem; }
@media (max-width: 480px) { .bookcta { grid-template-columns: 1fr; } }
.bookcta img { border-radius: 3px; box-shadow: 0 10px 24px rgba(14,23,38,.28); }
.bookcta h2, .bookcta h3 { font-weight: 400; font-size: 1.25rem; margin: 0 0 .4rem; }
.bookcta h2::after { display: none; }
.bookcta p { color: var(--stone); font-size: .95rem; margin-bottom: .8rem; }
.btn { display: inline-block; padding: .68rem 1.35rem; border-radius: 3px; text-decoration: none; font-size: .9rem; background: var(--accent); color: #fff; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif; }
.btn:hover { background: var(--accent-deep); }
.backlink { display: inline-block; margin: 1.6rem 0 0; color: var(--accent); font-size: .9rem; }

footer { margin-top: 4rem; background: var(--night); color: #8fa1b8; padding: 2.6rem 1.5rem; font-size: .84rem; }
.foot { max-width: 1020px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 2.2rem; }
@media (max-width: 640px) { .foot { grid-template-columns: 1fr; } }
footer h3 { color: var(--snow); font-weight: 400; font-size: .98rem; margin-bottom: .6rem; letter-spacing: .06em; }
footer a { color: #b6c2d2; }
footer p { margin-bottom: .4rem; }
  @media (max-width: 680px) { header { position: static; backdrop-filter: none; -webkit-backdrop-filter: none; } .nav ul { gap: .9rem 1.1rem; } }

.social { display: flex; gap: .9rem; margin-top: .9rem; }
.social a { color: inherit; opacity: .75; transition: opacity .15s ease; }
.social a:hover { opacity: 1; }
.social svg { width: 21px; height: 21px; fill: currentColor; display: block; }