:root{
  --bg:#f3f5f9;
  --surface:#ffffff;
  --surface-2:#f8fbff;
  --text:#152238;
  --muted:#5d6b82;
  --line:#dbe3ef;
  --brand:#0a7a5a;
  --brand-dark:#075940;
  --accent:#1f6feb;
  --shadow:0 12px 30px rgba(10,25,58,.08);
  --radius:20px;
  --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1100px 400px at 50% -180px,#dff0ff 0,transparent 60%),
    var(--bg);
  line-height:1.65;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{width:min(100% - 32px,var(--max));margin-inline:auto}
.site-header{
  position:sticky;top:0;z-index:20;
  backdrop-filter:blur(8px);
  background:rgba(255,255,255,.86);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;
}
.menu-toggle{
  display:none;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  border-radius:10px;
  padding:8px 10px;
  font-size:.9rem;
  font-weight:600;
  cursor:pointer;
}
.logo{
  display:inline-flex;align-items:center;gap:12px;
  font-weight:800;letter-spacing:.15px;color:var(--text);
  text-decoration:none;
  font-size:1.35rem;
  line-height:1.1;
}
.logo:hover{text-decoration:none}
.logo img{width:56px;height:56px;display:block;border-radius:50%;object-fit:cover;box-shadow:0 8px 20px rgba(31,111,235,.18)}
.logo span{color:var(--brand);font-weight:900}
.nav{display:flex;flex-wrap:wrap;gap:10px}
.nav a{
  color:var(--text);
  font-size:.93rem;
  padding:8px 10px;
  border-radius:999px;
}
.nav a:hover{background:var(--surface-2);text-decoration:none}
.hero{padding:44px 0 18px}
.hero-grid{
  display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.hero-copy{padding:30px}
.badge{
  display:inline-block;
  background:#e8f8f2;
  color:var(--brand-dark);
  border:1px solid #c6eadb;
  border-radius:999px;
  padding:6px 12px;
  font-size:.82rem;
  font-weight:700;
  margin-bottom:12px;
}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0 0 14px}
h1{font-size:clamp(2rem,3.3vw,3rem)}
h2{font-size:clamp(1.45rem,2.2vw,2rem)}
h3{font-size:1.1rem}
p{margin:0 0 14px}
.lead{font-size:1.05rem;color:#25395b}
.meta{display:flex;flex-wrap:wrap;gap:8px 14px;color:var(--muted);font-size:.93rem;margin-top:16px}
.hero-media{padding:12px}
.hero-media img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:1200 / 760;
  object-fit:cover;
  border-radius:16px;
  border:1px solid var(--line);
}
.grid{
  display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start;padding:16px 0 44px;
}
.section{padding:28px;margin-bottom:18px}
.section ul{padding-left:20px;margin:0}
.section li{margin-bottom:8px}
.callout{
  border:1px solid #cde4fa;
  background:#f3f8ff;
  border-radius:16px;
  padding:14px 16px;
  margin-top:14px;
}
.gallery{padding:6px 0 2px;margin-bottom:18px}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery figure{margin:0;padding:10px}
.gallery img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:1200 / 760;
  object-fit:cover;
  border:1px solid var(--line);
  border-radius:14px;
}
.gallery figcaption{font-size:.88rem;color:var(--muted);padding:8px 4px 2px}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;min-width:620px;background:#fff}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line)}
th{background:#f2f8ff;font-size:.95rem}
.sidebar{position:sticky;top:86px}
.sidebar .card{padding:18px;margin-bottom:14px}
.toc{display:grid;gap:8px}
.toc a{
  display:block;padding:9px 11px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);color:var(--text)
}
.related{display:grid;gap:10px}
.related a{
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px 14px;
  background:#fff;
  color:var(--text);
  display:block;
}
.breadcrumbs{font-size:.9rem;color:var(--muted);padding-top:14px}
.footer{
  border-top:1px solid var(--line);
  padding:24px 0 40px;
  color:var(--muted);
  font-size:.92rem;
}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:14px;align-items:start}
.footer-nav{display:flex;flex-wrap:wrap;gap:6px 14px;justify-content:flex-end;max-width:520px}
.footer-nav a{color:var(--muted);text-decoration:none}
.footer-nav a:hover{color:var(--brand);text-decoration:underline}
.footer-bottom{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:.88rem;color:var(--muted)}
@media (max-width:980px){
  .hero-grid,.grid,.footer-grid,.gallery-grid{grid-template-columns:1fr}
  .footer-nav{justify-content:flex-start;max-width:none}
  .sidebar{position:static}
}
@media (max-width:640px){
  .container{width:min(100% - 20px,var(--max))}
  .site-header{position:static}
  .header-inner{
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    padding:12px 0;
  }
  .logo{font-size:1.08rem}
  .logo img{width:40px;height:40px;border-radius:50%;object-fit:cover}
  .menu-toggle{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-left:auto;
  }
  .nav{
    display:none;
    flex-direction:column;
    width:100%;
    padding:8px 0 2px;
    gap:6px;
  }
  .nav.is-open{display:flex}
  .nav a{
    width:100%;
    font-size:.86rem;
    padding:9px 11px;
    border:1px solid var(--line);
    background:#fff;
    border-radius:10px;
  }
  .hero{padding:18px 0 10px}
  .hero-copy,.section{padding:18px}
  .card{border-radius:16px}
  h1{font-size:clamp(1.5rem,7vw,2rem)}
  h2{font-size:clamp(1.2rem,5.3vw,1.55rem)}
  .lead{font-size:1rem}
  .meta{font-size:.88rem;gap:6px 10px}
  .grid{gap:14px;padding:10px 0 28px}
  .section{margin-bottom:12px}
  .gallery{margin-bottom:12px}
  .gallery-grid{gap:10px}
  .gallery figure{padding:8px}
  .breadcrumbs{font-size:.82rem;padding-top:10px}
  .footer{padding:18px 0 30px}
  .footer-grid{gap:8px}
  .table-wrap{
    border-radius:12px;
    margin-inline:-2px;
    overflow:visible;
  }
  table{
    min-width:0;
    border-collapse:separate;
    border-spacing:0;
  }
  thead{
    position:absolute;
    width:1px;
    height:1px;
    padding:0;
    margin:-1px;
    overflow:hidden;
    clip:rect(0,0,0,0);
    white-space:nowrap;
    border:0;
  }
  tbody tr{
    display:block;
    border:1px solid var(--line);
    border-radius:12px;
    margin-bottom:10px;
    background:#fff;
  }
  tbody td{
    display:block;
    width:100%;
    border:0;
    border-bottom:1px solid var(--line);
    padding:10px 12px;
  }
  tbody td:last-child{border-bottom:0}
  tbody td:first-child{
    font-weight:700;
    background:#f7fbff;
    border-radius:12px 12px 0 0;
  }
}