:root{
  --brand:#0f766e; --brand-dark:#0b5750; --accent:#f59e0b;
  --ink:#0f172a; --muted:#475569; --bg:#f8fafc; --line:#e2e8f0;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Prompt","Segoe UI",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.7}
img{max-width:100%;display:block;border-radius:14px}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{font-family:"Prompt",sans-serif;color:var(--ink);line-height:1.3;margin:0 0 .6em}
h1{font-size:clamp(2rem,4vw,3.2rem);font-weight:700}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700}
h3{font-size:1.25rem;font-weight:600}
p{margin:0 0 1em;color:#1f2937}
.lead{font-size:1.125rem;color:var(--muted)}
/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:1180px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--ink)}
.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--accent));display:grid;place-items:center;color:#fff;font-weight:800}
.nav ul{display:flex;gap:6px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.nav ul a{padding:8px 12px;border-radius:8px;color:var(--ink);font-size:.95rem;font-weight:500}
.nav ul a:hover,.nav ul a.active{background:#ecfeff;color:var(--brand-dark)}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:1rem}
/* hero */
.hero{position:relative;padding:80px 0 60px;background:radial-gradient(1200px 600px at 10% -10%,#ccfbf1 0%,transparent 60%),radial-gradient(900px 500px at 100% 0%,#fef3c7 0%,transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.badge{display:inline-block;background:#ecfeff;color:var(--brand-dark);padding:6px 12px;border-radius:999px;font-size:.85rem;font-weight:600;margin-bottom:16px}
.cta{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;padding:12px 22px;border-radius:10px;font-weight:600;transition:transform .15s}
.cta:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.cta.outline{background:#fff;color:var(--brand-dark);border:1.5px solid var(--brand)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
/* sections */
section{padding:64px 0}
.section-title{text-align:center;max-width:760px;margin:0 auto 40px}
.section-title p{color:var(--muted)}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px -12px rgba(15,23,42,.15)}
.card h3{margin-top:12px}
.icon-circle{width:48px;height:48px;border-radius:12px;background:#ecfeff;color:var(--brand-dark);display:grid;place-items:center;font-size:1.4rem;font-weight:700}
.alt-bg{background:var(--bg)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split.reverse{direction:rtl}
.split.reverse>*{direction:ltr}
.pill{display:inline-block;background:#fef3c7;color:#92400e;padding:4px 10px;border-radius:999px;font-size:.8rem;font-weight:600;margin-right:6px;margin-bottom:6px}
ul.check{list-style:none;padding:0;margin:0 0 1em}
ul.check li{padding:6px 0 6px 28px;position:relative}
ul.check li:before{content:"✓";position:absolute;left:0;top:6px;color:var(--brand);font-weight:700}
.stat{text-align:center;padding:20px}
.stat b{display:block;font-size:2.2rem;color:var(--brand-dark);font-weight:800}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.gallery img{aspect-ratio:1;object-fit:cover}
/* footer */
footer{background:#0f172a;color:#cbd5e1;padding:60px 0 24px;margin-top:40px}
footer h4{color:#fff;margin-bottom:14px;font-size:1rem}
footer a{color:#cbd5e1}
footer a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px}
.foot-bottom{border-top:1px solid #1e293b;margin-top:32px;padding-top:20px;text-align:center;color:#64748b;font-size:.9rem}
/* article */
.article-body p{font-size:1.05rem}
.article-body h2{margin-top:2em}
.article-body h3{margin-top:1.4em}
.toc{background:#f0fdfa;border:1px solid #99f6e4;border-radius:12px;padding:18px 22px;margin-bottom:28px}
.toc h4{margin:0 0 8px}
.toc ol{margin:0;padding-left:20px;color:var(--muted)}
/* forms */
input,textarea,select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
input:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #ccfbf1}
label{display:block;font-weight:600;margin-bottom:6px;font-size:.95rem}
.field{margin-bottom:16px}
/* table */
table{width:100%;border-collapse:collapse;margin:20px 0}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
th{background:#f8fafc;font-weight:600}
/* responsive */
@media(max-width:900px){
  .hero-grid,.split,.grid-2,.grid-3,.grid-4,.foot-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .nav ul{display:none;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px}
  .nav ul.open{display:flex}
  .menu-btn{display:block}
  section{padding:48px 0}
  .hero{padding:48px 0 32px}
}