@keyframes ol-spin{to{transform:rotate(360deg)}}.olympiad-site{--green-700:var(--ol-primary,#0f5640);--green-900:color-mix(in srgb,var(--green-700) 42%,#000);--green-800:color-mix(in srgb,var(--green-700) 68%,#000);--green-600:color-mix(in srgb,var(--green-700) 85%,#2fbf8a);--green-100:color-mix(in srgb,var(--green-700) 11%,#fff);--footer-bg:color-mix(in srgb,var(--green-700) 28%,#000);--gold:var(--ol-secondary,#c9a24a);--gold-light:color-mix(in srgb,var(--gold) 58%,#fff);--gold-deep:color-mix(in srgb,var(--gold) 62%,#000);--gold-deeper:color-mix(in srgb,var(--gold) 34%,#000);--on-dark:color-mix(in srgb,var(--green-700) 14%,#fff);--on-dark-muted:color-mix(in srgb,var(--green-700) 30%,#fff);--cream:color-mix(in srgb,var(--gold) 6%,#fff);--ink:#1d2a25;--muted:#5d6b65;--line:#e4e0d4;--white:#fff;--radius:18px;--shadow:0 10px 30px -12px color-mix(in srgb,var(--green-900) 25%,transparent);color:var(--ink);background:var(--cream);font-family:Hind Siliguri,sans-serif;font-size:16px;line-height:1.7}.olympiad-site *,.olympiad-site :before,.olympiad-site :after{box-sizing:border-box}.olympiad-site :where(h1,h2,h3,h4,p,ul,ol,blockquote,fieldset,legend,figure){margin:0;padding:0}.olympiad-site :where(h1,h2,h3,h4){font-family:Noto Serif Bengali,serif;line-height:1.35}.olympiad-site a{color:inherit}.olympiad-site .ol-container{z-index:1;width:min(1140px,92%);margin-inline:auto;position:relative}.olympiad-site .ol-skip{z-index:100;background:var(--white);border-radius:8px;padding:8px 14px;position:absolute;top:8px;left:-999px}.olympiad-site .ol-skip:focus{left:8px}.olympiad-site .ol-pattern{position:relative}.olympiad-site .ol-pattern:before{content:"";pointer-events:none;background:color-mix(in srgb,var(--gold) 14%,transparent);position:absolute;inset:0;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cg fill='none' stroke='%23000' stroke-width='1'%3E%3Cpath d='M40 4l10 26 26 10-26 10-10 26-10-26L4 40l26-10z'/%3E%3Ccircle cx='40' cy='40' r='10'/%3E%3C/g%3E%3C/svg%3E");mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cg fill='none' stroke='%23000' stroke-width='1'%3E%3Cpath d='M40 4l10 26 26 10-26 10-10 26-10-26L4 40l26-10z'/%3E%3Ccircle cx='40' cy='40' r='10'/%3E%3C/g%3E%3C/svg%3E")}.olympiad-site .ol-nav{z-index:50;background:color-mix(in srgb,var(--green-900) 92%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid color-mix(in srgb,var(--gold) 25%,transparent);position:sticky;top:0}.olympiad-site .ol-nav .ol-container{justify-content:space-between;align-items:center;gap:16px;height:68px;display:flex}.olympiad-site .ol-brand{color:var(--white);align-items:center;gap:10px;font-weight:600;text-decoration:none;display:flex}.olympiad-site .ol-brand-mark{border:1.5px solid var(--gold);width:38px;height:38px;color:var(--gold);border-radius:50%;flex:0 0 38px;place-items:center;font-family:Amiri,serif;font-size:20px;display:grid;overflow:hidden}.olympiad-site .ol-brand-mark img{object-fit:cover;width:100%;height:100%}.olympiad-site .ol-nav-links{gap:26px;margin:0;padding:0;list-style:none;display:flex}.olympiad-site .ol-nav-links a{color:var(--on-dark-muted);font-size:15px;text-decoration:none;transition:color .2s}.olympiad-site .ol-nav-links a:hover{color:var(--gold-light)}.olympiad-site .ol-nav-end{align-items:center;gap:10px;display:flex}.olympiad-site .ol-burger{border:1px solid color-mix(in srgb,var(--gold) 35%,transparent);width:40px;height:40px;color:var(--gold-light);cursor:pointer;background:0 0;border-radius:10px;place-items:center;display:none}.olympiad-site .ol-burger span,.olympiad-site .ol-burger span:before,.olympiad-site .ol-burger span:after{background:currentColor;border-radius:2px;width:18px;height:2px;transition:transform .2s,background .2s;display:block;position:relative}.olympiad-site .ol-burger span:before,.olympiad-site .ol-burger span:after{content:"";position:absolute;left:0}.olympiad-site .ol-burger span:before{top:-6px}.olympiad-site .ol-burger span:after{top:6px}.olympiad-site .ol-burger[aria-expanded=true] span{background:0 0}.olympiad-site .ol-burger[aria-expanded=true] span:before{transform:translateY(6px)rotate(45deg)}.olympiad-site .ol-burger[aria-expanded=true] span:after{transform:translateY(-6px)rotate(-45deg)}.olympiad-site .ol-mobile-menu{display:none}.olympiad-site .ol-btn{cursor:pointer;border:none;border-radius:999px;align-items:center;gap:8px;padding:12px 24px;font-family:inherit;font-size:16px;font-weight:600;text-decoration:none;transition:transform .2s,box-shadow .2s,background .2s;display:inline-flex}.olympiad-site .ol-btn:disabled{opacity:.7;cursor:progress}.olympiad-site .ol-btn-gold{background:linear-gradient(135deg,var(--gold-light),var(--gold));color:var(--green-900);box-shadow:0 8px 20px -8px color-mix(in srgb,var(--gold) 70%,transparent)}.olympiad-site .ol-btn-gold:hover{transform:translateY(-2px)}.olympiad-site .ol-btn-ghost{color:var(--white);background:0 0;border:1.5px solid #ffffff59}.olympiad-site .ol-btn-ghost:hover{background:#ffffff14}.olympiad-site .ol-nav-cta{padding:9px 18px;font-size:14px}.olympiad-site .ol-hero{background:radial-gradient(ellipse at top,var(--green-700),var(--green-900) 70%);color:var(--white);text-align:center;padding:90px 0 130px;overflow:hidden}.olympiad-site .ol-hero:after{content:"";background:var(--cream);clip-path:ellipse(60% 100% at 50% 100%);height:70px;position:absolute;inset:auto 0 -1px}.olympiad-site .ol-badge{border:1px solid color-mix(in srgb,var(--gold) 50%,transparent);color:var(--gold-light);background:color-mix(in srgb,var(--gold) 8%,transparent);border-radius:999px;margin-bottom:22px;padding:6px 16px;font-size:14px;display:inline-block}.olympiad-site .ol-salawat{color:var(--gold);margin-bottom:6px;font-family:Amiri,serif;font-size:30px}.olympiad-site .ol-hero h1{margin-bottom:18px;font-size:clamp(32px,5.5vw,58px);font-weight:800}.olympiad-site .ol-hero h1 span{color:var(--gold-light)}.olympiad-site .ol-lead{max-width:680px;color:var(--on-dark-muted);margin:0 auto 34px;font-size:clamp(16px,2vw,19px)}.olympiad-site .ol-hero-actions{flex-wrap:wrap;justify-content:center;gap:14px;display:flex}.olympiad-site .ol-countdown{flex-wrap:wrap;justify-content:center;gap:14px;min-height:84px;margin-top:46px;display:flex}.olympiad-site .ol-cd-box{border:1px solid color-mix(in srgb,var(--gold) 30%,transparent);background:#ffffff0f;border-radius:14px;min-width:88px;padding:14px 10px}.olympiad-site .ol-cd-box b{color:var(--gold-light);font-family:Noto Serif Bengali,serif;font-size:30px;display:block}.olympiad-site .ol-cd-box small{color:var(--on-dark-muted);font-size:13px}.olympiad-site .ol-cd-label{color:var(--on-dark-muted);min-height:24px;margin-top:14px;font-size:14px}.olympiad-site .ol-sec{padding:80px 0;scroll-margin-top:68px}.olympiad-site .ol-sec-white{background:var(--white)}.olympiad-site .ol-sec-head{text-align:center;margin-bottom:46px}.olympiad-site .ol-sec-head.left{text-align:left;margin-bottom:24px}.olympiad-site .ol-eyebrow{color:var(--gold);letter-spacing:.5px;font-size:14px;font-weight:600}.olympiad-site .ol-sec-head h2{color:var(--green-800);margin-top:6px;font-size:clamp(26px,3.5vw,38px)}.olympiad-site .ol-divider{background:linear-gradient(90deg,transparent,var(--gold),transparent);width:70px;height:3px;margin:14px auto 0}.olympiad-site .ol-about{grid-template-columns:1.2fr 1fr;align-items:center;gap:40px;display:grid}.olympiad-site .ol-about-text p{color:var(--muted);margin-bottom:14px;font-size:17px}.olympiad-site .ol-about blockquote{border-left:4px solid var(--gold);background:var(--white);color:var(--green-800);box-shadow:var(--shadow);border-radius:0 12px 12px 0;padding:14px 20px;font-weight:500}.olympiad-site .ol-stats{grid-template-columns:1fr 1fr;gap:16px;display:grid}.olympiad-site .ol-stat{background:var(--white);border-radius:var(--radius);border:1px solid var(--line);text-align:center;padding:24px}.olympiad-site .ol-stat b{color:var(--green-700);font-family:Noto Serif Bengali,serif;font-size:34px;display:block}.olympiad-site .ol-stat span{color:var(--muted);font-size:14px}.olympiad-site .ol-groups{grid-template-columns:repeat(4,1fr);gap:18px;display:grid}.olympiad-site .ol-group{background:var(--white);border-radius:var(--radius);border:1px solid var(--line);padding:28px 22px;transition:transform .25s,box-shadow .25s;position:relative}.olympiad-site .ol-group:hover{box-shadow:var(--shadow);transform:translateY(-6px)}.olympiad-site .ol-group 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