:root{
  --bg:#f5fbf8; --bg2:#eaf5f9; --mint:#d6f0e4; --sage:#9bd8bd; --sky:#d4e9f7; --blue:#86bde6;
  --ink:#1d3445; --muted:#566b78; --line:#d9e8e6;
  --green:#2f9e7a; --green-d:#1f7a5c; --blue-d:#2f6f9f;
  --serif:"Iowan Old Style","Palatino Linotype",Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:linear-gradient(180deg,var(--bg2),var(--bg) 320px);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--blue-d)}
.wrap{max-width:820px;margin:0 auto;padding:0 22px}
header{background:rgba(245,251,248,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5;backdrop-filter:blur(10px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:60px;max-width:820px;margin:0 auto;padding:0 22px}
.logo{font-family:var(--serif);font-weight:700;font-size:20px;text-decoration:none;color:var(--ink)}
.logo b{color:var(--green)}
.nav nav{display:flex;gap:20px;font-size:14.5px}
.nav nav a{text-decoration:none;color:var(--muted)}
.nav nav a:hover{color:var(--ink)}
main{padding:54px 0 70px}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--green-d);margin-bottom:10px}
h1{font-family:var(--serif);font-size:clamp(30px,5vw,42px);line-height:1.2;margin-bottom:8px}
.meta{color:var(--muted);font-size:14.5px;margin-bottom:30px}
.doc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px 36px;box-shadow:0 10px 30px rgba(31,52,69,.05)}
.doc + .doc{margin-top:28px}
.doc h2{font-family:var(--serif);font-size:22px;margin:28px 0 8px;color:var(--ink)}
.doc h2:first-of-type{margin-top:0}
.doc h3{font-family:var(--serif);font-size:18px;margin:18px 0 6px}
.doc p{margin-bottom:12px;color:#33505f}
.doc ul{margin:0 0 14px 22px;color:#33505f}
.doc li{margin-bottom:6px}
.callout{background:#f0f9f5;border-left:4px solid var(--sage);border-radius:0 12px 12px 0;padding:14px 18px;margin:0 0 20px;color:#33505f}
.lang-title{font-family:var(--serif);font-size:26px;margin-bottom:6px}
footer{border-top:1px solid var(--line);background:#e3f1ea;padding:26px 0;font-size:13.5px;color:var(--muted)}
footer .wrap{display:flex;gap:18px;flex-wrap:wrap;justify-content:space-between}
@media(max-width:560px){.doc{padding:24px 20px}}