:root{
  --bg:#fff;--text:#111;--muted:#5f6b6b;--border:#dfe9e8;--soft:#f5f9f9;
  --primary:#006b6b;--primary-dark:#004f4f;--active:#65d5cf;--active-soft:#dff8f6;
  --max:1120px;--radius:12px;--shadow:0 6px 22px rgba(0,0,0,.06)
}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.65}
img{max-width:100%;height:auto}a{color:var(--primary);text-underline-offset:3px}
a:hover,a:focus-visible{color:var(--primary-dark)}
h1,h2,h3{font-family:Abel,Arial,Helvetica,sans-serif;line-height:1.2;color:#0d2222;margin-top:0}
h1{font-size:clamp(2rem,5vw,3rem)}h2{font-size:clamp(1.5rem,4vw,2rem);margin-top:2rem;border-left:4px solid var(--primary);padding-left:.8rem}
h3{font-size:1.25rem;margin-top:1.5rem}p{margin:0 0 1rem}
.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:1rem;top:1rem;z-index:9999;background:#fff;padding:.7rem 1rem;border:2px solid var(--primary)}
.site-header{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid var(--border)}
.header-inner{max-width:var(--max);margin:auto;padding:.65rem 1rem;min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:#111;font-weight:700}.brand img{width:42px;height:42px}.brand-name{font-size:1.15rem}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;border:1px solid var(--border);background:#fff;color:var(--primary-dark);border-radius:8px;font-size:1.35rem}
.main-nav{display:none}.main-nav.is-open{display:block;position:absolute;left:0;right:0;top:100%;background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
.main-nav ul{list-style:none;margin:0;padding:.5rem 1rem 1rem}.main-nav a{display:block;padding:.8rem .5rem;color:#111;text-decoration:none;border-radius:8px}
.main-nav a:hover,.main-nav a[aria-current="page"]{background:var(--active-soft);color:#053f3f}
.page-wrap{max-width:var(--max);margin:auto;padding:1rem}.breadcrumbs{font-size:.92rem;color:var(--muted);margin:.6rem 0 1.2rem}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:.35rem;list-style:none;margin:0;padding:0}.breadcrumbs li:not(:last-child)::after{content:"›";margin-left:.35rem;color:#91a09f}
.hero{padding:1.5rem 0 1rem}.eyebrow{display:inline-block;color:var(--primary);font-weight:700;text-transform:uppercase;font-size:.9rem;letter-spacing:.04em;margin-bottom:.6rem}.intro{max-width:820px;font-size:1.08rem;color:#2b3636}.meta-line{font-size:.9rem;color:var(--muted)}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:2rem;align-items:start}.content-card,.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.content-card{padding:clamp(1.1rem,4vw,2rem)}.side-card{padding:1rem}.side-card h2{font-size:1.3rem;margin-top:0}.related-card{margin-top:1rem}
.highlight{background:var(--soft);border-left:4px solid var(--primary);padding:1rem;border-radius:0 var(--radius) var(--radius) 0;margin:1.2rem 0}.notice{background:#fff8e8;border-left:4px solid #c58b00;padding:1rem;border-radius:0 var(--radius) var(--radius) 0;margin:1rem 0}
.data-table{width:100%;border-collapse:collapse;margin:1rem 0 1.5rem}.data-table th,.data-table td{padding:.75rem .65rem;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}.data-table th{width:38%;background:var(--soft);color:#244646}
.cards{display:grid;grid-template-columns:1fr;gap:1rem;margin:1rem 0}.mini-card{border:1px solid var(--border);border-radius:10px;padding:1rem;background:#fff}.mini-card h3{margin-top:0}.mini-card a{text-decoration:none}
.related-links{list-style:none;padding:0;margin:0}.related-links li+li{border-top:1px solid var(--border)}.related-links a{display:block;padding:.8rem 0;text-decoration:none}
.search-box{display:flex;gap:.5rem}.search-box input,.form-field input,.form-field textarea{width:100%;border:1px solid #b9c9c7;border-radius:8px;padding:.75rem .8rem;font:inherit}.form-field{margin-bottom:1rem}.form-field label{display:block;font-weight:700;margin-bottom:.35rem}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.7rem 1rem;border:0;border-radius:8px;background:var(--primary);color:#fff;font-weight:700;text-decoration:none;cursor:pointer}.button:hover{background:var(--active);color:#062f2f}
.alpha-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem;margin:1rem 0}.alpha-grid a{display:block;text-align:center;padding:.7rem .4rem;border:1px solid var(--border);border-radius:8px;text-decoration:none;background:#fff}
.site-footer{margin-top:3rem;border-top:1px solid var(--border);background:#f7fafa}.footer-inner{max-width:var(--max);margin:auto;padding:2rem 1rem}.footer-nav{display:flex;flex-wrap:wrap;gap:.65rem 1.25rem;margin-bottom:1rem}.footer-nav a{text-decoration:none;color:#174848}.copyright{margin:0;font-size:.9rem;color:var(--muted)}
@media(min-width:760px){.menu-toggle{display:none}.main-nav{display:block;margin-left:auto}.main-nav ul{display:flex;align-items:center;gap:.2rem;padding:0}.main-nav a{padding:.65rem .8rem}.content-grid{grid-template-columns:minmax(0,1fr) 300px}.cards{grid-template-columns:repeat(2,1fr)}.alpha-grid{grid-template-columns:repeat(8,1fr)}}