:root{--river:#0D4548;--teal:#176B6B;--forest:#123F38;--sky:#6F9EAC;--ivory:#F7F8F5;--white:#fff;--mist:#EDF5F3;--water:#E7F0F3;--sand:#E9D9AA;--text:#163A3C;--secondary:#617477;--muted:#718285;--action:#0F6A6D;--danger-bg:#FBEAEA;--danger:#A93636;--blood-bg:#FCEEEF;--blood:#C94B55;--border:#D9E3E1;--radius:12px;--shadow:0 4px 18px rgba(13,69,72,.07);--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ivory);color:var(--text);font-family:"Noto Sans Bengali","Noto Sans",system-ui,-apple-system,sans-serif;line-height:1.65}a{color:var(--action);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:3px solid #B9DEDA;outline-offset:3px}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:10px;z-index:100}.site-header{position:sticky;top:0;z-index:50;background:rgba(247,248,245,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}.container{width:min(calc(100% - 32px),var(--max));margin:auto}.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--river)}.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--river);display:grid;place-items:center;color:#fff}.navlinks{display:none;gap:18px;font-size:14px}.navlinks a{color:var(--text)}.hero{position:relative;overflow:hidden;padding:54px 0 46px;background:linear-gradient(180deg,var(--mist),var(--ivory))}.hero:after{content:"";position:absolute;inset:auto -10% -30px 0;height:150px;background:url("/assets/river-contour.svg") center/cover no-repeat;opacity:.28;pointer-events:none}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--teal)}h1,h2,h3{line-height:1.25;margin:0 0 12px}h1{font-size:clamp(30px,7vw,54px);max-width:760px}h2{font-size:clamp(23px,4vw,32px)}h3{font-size:18px}.lead{font-size:17px;color:var(--secondary);max-width:700px}.search{margin-top:25px;display:flex;gap:8px;max-width:760px}.search input{flex:1;min-width:0;border:1px solid #C8D8D6;background:#fff;border-radius:10px;padding:14px 15px;font:inherit;color:var(--text)}button,.btn{border:0;background:var(--action);color:#fff;border-radius:10px;padding:13px 17px;font:600 15px inherit;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;min-height:44px}.section{padding:42px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}.section-head p{margin:0;color:var(--secondary);font-size:14px}.grid{display:grid;gap:14px}.grid-2{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,1fr)}.card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.card.soft{background:var(--mist);box-shadow:none}.card.sand{background:var(--sand);box-shadow:none;border-color:#DCCB9C}.meta{font-size:13px;color:var(--secondary)}.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.action-card{display:block;padding:15px;background:#fff;border:1px solid var(--border);border-radius:11px;color:var(--text);font-weight:700}.action-card small{display:block;color:var(--secondary);font-weight:400}.alerts{display:grid;gap:12px}.alert{border-radius:12px;padding:18px;border:1px solid}.emergency{background:var(--danger-bg);border-color:#E5B5B5}.blood{background:var(--blood-bg);border-color:#E9BCC1}.alert strong{display:block;margin-bottom:4px;color:var(--danger)}.blood strong{color:var(--blood)}.demo-state{padding:20px;border:1px dashed #B9C9C7;border-radius:12px;background:var(--mist);color:var(--secondary)}.page-title{padding:40px 0 24px;background:var(--mist)}.page-title h1{font-size:36px}.footer{margin-top:30px;background:var(--river);color:#EAF3F2;padding:34px 0}.footer a{color:#D6ECEA}.footer small{color:#B7CECC}.chip{display:inline-block;background:#E7F0F3;border:1px solid #D0E0E3;padding:7px 11px;border-radius:999px;font-size:13px;color:var(--text);margin:3px}.number{font-size:27px;font-weight:800;font-variant-numeric:tabular-nums}@media(min-width:700px){.navlinks{display:flex}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.actions{grid-template-columns:repeat(4,1fr)}.alerts{grid-template-columns:repeat(2,1fr)}.hero{padding:76px 0 62px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}