:root{
  --bg:#F6F5F0; --surface:#FFFFFF; --surface-2:#F1F0EA;
  --ink:#1B2A24; --ink-soft:#4f5f57; --ink-faint:#8A968E;
  --brand:#2D5A4A; --brand-2:#3B7460; --brand-ink:#234A3D;
  --accent:#B98A3E; --accent-soft:#F3E9D6; --wine:#6E1B2E;
  --line:#E6E3DA; --line-strong:#D6D2C6;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0F1512; --surface:#16201B; --surface-2:#1B261F;
    --ink:#E9EFEA; --ink-soft:#B4C2B9; --ink-faint:#7E8D84;
    --brand:#4E9077; --brand-2:#5EA88C; --brand-ink:#CFE7DC;
    --accent:#D2A75B; --accent-soft:#2A2418;
    --line:#25322B; --line-strong:#32433A;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--brand-ink);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;padding:12px 22px;border-radius:11px;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{text-decoration:none;filter:brightness(1.06)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}

/* Header */
header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand img{height:42px;width:auto;display:block}
.brand .logo-d{display:none}
@media (prefers-color-scheme:dark){.brand .logo-l{display:none}.brand .logo-d{display:block}}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--ink-soft);font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--ink);text-decoration:none}
@media (max-width:720px){.nav-links a.hide-m{display:none}}

/* Blog index */
.blog-hero{padding:52px 0 30px;text-align:center}
.blog-hero .tag{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.blog-hero h1{font-family:var(--serif);font-size:clamp(30px,4.5vw,44px);margin:12px 0 0;letter-spacing:-.01em}
.blog-hero p{color:var(--ink-soft);margin:14px auto 0;max-width:56ch;font-size:17px}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;padding:16px 0 60px}
@media (max-width:720px){.cards{grid-template-columns:1fr}}
.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:26px;transition:transform .18s ease,border-color .18s}
.card:hover{transform:translateY(-3px);border-color:var(--line-strong);text-decoration:none}
.card .cat{font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--brand-2)}
.card h2{font-family:var(--serif);font-size:22px;color:var(--ink);margin:10px 0 8px;line-height:1.2}
.card p{color:var(--ink-soft);font-size:14.5px;margin:0}
.card .more{display:inline-block;margin-top:14px;color:var(--brand-ink);font-weight:600;font-size:14px}

/* Article */
.article{max-width:740px;margin:0 auto;padding:40px 24px 20px}
.article .back{font-size:14px;color:var(--ink-soft);font-weight:500}
.article .cat{display:inline-block;margin-top:22px;font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.article h1{font-family:var(--serif);font-size:clamp(28px,4.4vw,40px);line-height:1.14;letter-spacing:-.01em;margin:12px 0 0}
.article .meta{color:var(--ink-faint);font-size:14px;margin-top:14px}
.article .lead{font-size:19px;color:var(--ink-soft);margin:26px 0 0;line-height:1.6}
.article h2{font-family:var(--serif);font-size:26px;margin:38px 0 0;letter-spacing:-.01em}
.article h3{font-family:var(--serif);font-size:20px;margin:26px 0 0}
.article p{margin:14px 0 0;font-size:16.5px}
.article ul,.article ol{margin:14px 0 0;padding-left:22px;font-size:16.5px}
.article li{margin:7px 0}
.article strong{color:var(--ink)}
.article a{font-weight:600;text-decoration:underline;text-underline-offset:2px}
.callout{background:color-mix(in srgb,var(--brand) 7%,var(--surface));border:1px solid color-mix(in srgb,var(--brand) 20%,transparent);border-radius:12px;padding:16px 20px;margin:24px 0 0;font-size:15.5px;color:var(--brand-ink)}
.tpl{background:var(--surface-2);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:10px;padding:16px 20px;margin:18px 0 0;font-size:15px;color:var(--ink);white-space:pre-wrap;font-family:var(--sans)}
.cta{margin:40px 0 0;background:linear-gradient(150deg,var(--brand),var(--brand-ink));color:#fff;border-radius:16px;padding:30px 28px;text-align:center}
.cta h3{font-family:var(--serif);color:#fff;font-size:23px;margin:0}
.cta p{color:rgba(255,255,255,.86);margin:10px 0 0;font-size:15px}
.cta a{display:inline-block;margin-top:16px;background:#fff;color:var(--brand-ink);font-weight:700;padding:12px 26px;border-radius:10px;text-decoration:none}
.sources{margin:34px 0 0;padding-top:16px;border-top:1px solid var(--line);font-size:13.5px;color:var(--ink-faint)}
.sources b{color:var(--ink-soft)} .sources a{color:var(--ink-soft);font-weight:500}
.related{margin:44px 0 0;padding-top:22px;border-top:1px solid var(--line)}
.related b{font-size:14px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.05em}
.related a{display:block;margin-top:10px;font-weight:600;font-size:16px}

footer{border-top:1px solid var(--line);padding:34px 0;margin-top:56px;color:var(--ink-faint);font-size:14px}
.foot{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.foot a{color:var(--ink-soft)}