:root{
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --text:#0F172A;
  --muted:#475569;
  --line:#E7E2D8;
  --accent:#0B132B;
  --accent2:#B08B57;
  --radius:18px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --max:1100px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
  line-height:1.55;
}
a{color:inherit}
.container{max-width:var(--max); margin:0 auto; padding:0 18px}
.section{padding:56px 0}
header{position:sticky; top:0; backdrop-filter:saturate(1.2) blur(10px); background:rgba(246,244,239,.88); border-bottom:1px solid var(--line); z-index:50}
.nav{display:flex; align-items:center; justify-content:space-between; padding:14px 0; gap:12px}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none}
.brand img{display:block}
.nav-right{display:flex; gap:10px; align-items:center; flex-wrap:wrap; justify-content:flex-end}
.nav a{font-weight:600; text-decoration:none}
.nav .links{display:flex; gap:12px; align-items:center; flex-wrap:wrap}
.lang{display:flex; gap:8px; align-items:center; margin-left:6px}
.pill{
  display:inline-flex; align-items:center; gap:8px;
  padding:7px 10px; border:1px solid var(--line); border-radius:999px;
  background:rgba(255,255,255,.6); text-decoration:none; font-weight:700;
}
.pill.active{border-color:rgba(176,139,87,.55); box-shadow:0 0 0 3px rgba(176,139,87,.12) inset}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px; border-radius:999px; border:1px solid var(--line);
  text-decoration:none; font-weight:700;
}
.btn.primary{background:var(--accent); color:white; border-color:transparent}
.btn.subtle{background:transparent}
.hero{
  padding:40px 0 18px;
}
.hero-grid{
  display:grid; grid-template-columns: 1.25fr .75fr; gap:22px; align-items:start;
}
@media (max-width: 900px){
  header{position:relative}
  .hero-grid{grid-template-columns:1fr}
}
.kicker{color:var(--muted); font-weight:650; margin:0 0 10px}
h1{
  margin:0 0 10px;
  font-family: ui-serif, Georgia, "Times New Roman", Times, serif;
  font-size: clamp(30px, 3.2vw, 46px);
  letter-spacing:-.02em;
}
.sublead{color:var(--muted); font-size:1.05rem; margin:0 0 18px}
.note{
  border-left:4px solid rgba(176,139,87,.6);
  background:rgba(255,255,255,.6);
  padding:12px 14px; border-radius:12px;
  color:var(--muted);
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.padded{padding:18px}
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:14px}
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
@media (max-width: 900px){
  .grid-2,.grid-3{grid-template-columns:1fr}
}
h2{margin:0 0 10px; font-size:1.35rem}
h3{margin:14px 0 8px; font-size:1.05rem}
.muted{color:var(--muted)}
hr.sep{border:none; border-top:1px solid var(--line); margin:14px 0}
.table{
  width:100%; border-collapse:collapse; overflow:hidden;
  border:1px solid var(--line); border-radius:14px;
}
.table th,.table td{
  padding:10px 10px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top;
}
.table th{background:rgba(246,244,239,.9)}
.table tr:last-child td{border-bottom:none}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  font-weight:800; color:var(--accent);
}
.abstract{
  width:100%;
  height:220px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:
    radial-gradient(1200px 240px at 20% 10%, rgba(176,139,87,.18), transparent 55%),
    radial-gradient(900px 220px at 80% 30%, rgba(11,19,43,.16), transparent 60%),
    linear-gradient(135deg, rgba(11,19,43,.06), rgba(176,139,87,.06));
}
.faq details{border:1px solid var(--line); border-radius:14px; padding:10px 12px; background:rgba(255,255,255,.8)}
.faq details + details{margin-top:10px}
.faq summary{cursor:pointer; font-weight:800}
form label{display:block; font-weight:750; margin:10px 0 6px}
input, select, textarea{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:white;
  font:inherit;
}
textarea{min-height:120px; resize:vertical}
.form-row{display:grid; grid-template-columns:1fr 1fr; gap:12px}
@media (max-width: 900px){
  .form-row{grid-template-columns:1fr}
}
.small{font-size:.95rem}
.skip{
  position:absolute; left:-10000px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip:focus{
  position:static; width:auto; height:auto; padding:10px 14px;
  background:white; border:1px solid var(--line); border-radius:12px;
}
.footer{border-top:1px solid var(--line); padding:18px 0; background:rgba(246,244,239,.9)}
.footer-grid{display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap}
.footer a{text-decoration:none; font-weight:700; color:var(--muted)}