:root{--blue:#063b82;--blue2:#0c5fba;--gold:#d9a828;--gold2:#ffe09a;--white:#fff;--ink:#092247;--green:#128747;--saffron:#f28c28;--glass:rgba(255,255,255,.82);--shadow:0 26px 80px rgba(6,59,130,.22)}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#061b3b;color:var(--ink);font-family:'Hind Siliguri',system-ui,sans-serif}body{touch-action:pan-y}.deck{width:100vw;height:100vh;position:relative;overflow:hidden}.slide{position:absolute;inset:0;width:100%;height:100%;padding:5.2vh 5.6vw;display:grid;place-items:center;opacity:0;visibility:hidden;transform:scale(1.025);transition:opacity .7s ease,transform .8s ease,visibility .7s;background:linear-gradient(135deg,#f7fbff 0%,#fff 48%,#f8f1dc 100%);overflow:hidden}.slide.active{opacity:1;visibility:visible;transform:scale(1)}.slide:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 18% 18%,rgba(217,168,40,.16),transparent 28%),radial-gradient(circle at 85% 20%,rgba(6,59,130,.14),transparent 30%),linear-gradient(90deg,rgba(242,140,40,.08),transparent 25%,transparent 72%,rgba(18,135,71,.08));pointer-events:none}.slide>*{position:relative;z-index:2}h1,h2,h3{font-family:'Noto Serif Bengali',serif;margin:0;line-height:1.12}.progress{position:fixed;top:0;left:0;right:0;height:7px;background:rgba(255,255,255,.24);z-index:20}.progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--saffron),#fff,var(--green));box-shadow:0 0 22px rgba(255,255,255,.9);transition:width .35s ease}.nav{position:fixed;z-index:30;top:50%;transform:translateY(-50%);width:58px;height:58px;border:0;border-radius:50%;background:rgba(255,255,255,.84);color:var(--blue);font-size:46px;line-height:1;box-shadow:0 14px 38px rgba(0,0,0,.18);cursor:pointer}.nav:hover{background:#fff;color:#b58913}.prev{left:22px}.next{right:22px}.auto{position:fixed;right:24px;bottom:24px;z-index:30;border:0;border-radius:999px;background:linear-gradient(135deg,var(--gold),#fff1b8);color:#533c04;font-weight:800;padding:12px 18px;box-shadow:0 14px 40px rgba(0,0,0,.18);cursor:pointer}.slide-count{position:fixed;left:24px;bottom:25px;z-index:30;background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.8);border-radius:999px;padding:9px 16px;color:var(--blue);font-weight:800;box-shadow:0 10px 32px rgba(0,0,0,.12)}
.flag-wave{position:absolute;inset:-18%;background:linear-gradient(130deg,rgba(242,140,40,.30),rgba(255,255,255,.24) 35%,rgba(18,135,71,.24) 68%,rgba(6,59,130,.18));filter:blur(0);animation:wave 8s ease-in-out infinite alternate}.flag-wave:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(110deg,rgba(255,255,255,.2),rgba(255,255,255,.2) 2px,transparent 2px,transparent 38px);transform:rotate(-5deg)}@keyframes wave{from{transform:translateX(-2%) skewY(-2deg)}to{transform:translateX(2%) skewY(2deg)}}.chakra{border:4px solid rgba(6,59,130,.16);border-radius:50%;position:absolute}.chakra:before,.chakra:after{content:"";position:absolute;left:50%;top:8%;bottom:8%;width:2px;background:rgba(6,59,130,.13);transform-origin:center}.chakra:after{transform:rotate(90deg)}.chakra.watermark{width:46vw;height:46vw;right:-10vw;top:-8vw;animation:spin 45s linear infinite}.chakra.big{width:65vh;height:65vh;right:4vw;opacity:.28;animation:spin 55s linear infinite}.chakra.watermark:before{box-shadow:0 0 0 0}.chakra.watermark:after{box-shadow:0 0 0 0}@keyframes spin{to{transform:rotate(360deg)}}.stars{position:absolute;inset:0;background-image:radial-gradient(circle,rgba(217,168,40,.9) 1px,transparent 1.8px);background-size:85px 85px;opacity:.22;animation:float 13s linear infinite}@keyframes float{to{background-position:120px 90px}}
.hero-slide{padding:4vh 4.5vw}.hero-content{width:min(1660px,92vw);display:flex;flex-direction:column;align-items:center;gap:1.7vh;text-align:center}.event-badge{font-weight:900;color:var(--blue);background:rgba(255,255,255,.75);border:1px solid rgba(217,168,40,.55);padding:9px 20px;border-radius:999px;box-shadow:0 12px 40px rgba(6,59,130,.12)}.brand-row{display:flex;align-items:center;gap:18px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.92);padding:12px 24px;border-radius:28px;box-shadow:0 20px 56px rgba(6,59,130,.13)}.logo-mark{width:72px;height:72px;border-radius:22px;display:grid;place-items:center;font-family:'Noto Serif Bengali',serif;font-size:42px;font-weight:900;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue2));box-shadow:inset 0 0 0 3px rgba(255,255,255,.35),0 12px 32px rgba(6,59,130,.22)}.brand-row h2{font-size:38px;color:var(--blue)}.brand-row p{margin:2px 0 0;color:#6b5a23;font-weight:800}.hero-slide h1{font-size:clamp(48px,5vw,92px);color:var(--blue);text-shadow:0 3px 0 rgba(255,255,255,.75)}.subtitle{font-size:clamp(19px,1.8vw,34px);font-weight:800;color:#183a68;margin:0}.main-attraction{width:100%;max-width:1280px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.85);border-radius:34px;padding:18px;box-shadow:var(--shadow)}.ribbon{display:inline-block;background:linear-gradient(135deg,var(--gold),#fff2b5);color:#6b4a00;border-radius:999px;padding:10px 26px;font-size:26px;font-weight:900;box-shadow:0 14px 34px rgba(217,168,40,.28);margin-bottom:16px}.attraction-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:18px}.attraction{border-radius:28px;padding:22px 18px;min-height:180px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.82);box-shadow:0 20px 58px rgba(6,59,130,.16);position:relative;overflow:hidden}.attraction:before{content:"";position:absolute;inset:-50%;background:conic-gradient(from 90deg,transparent,rgba(255,255,255,.35),transparent);animation:spin 8s linear infinite}.attraction>*{position:relative}.oath{background:linear-gradient(135deg,#fff8df,#fff,#eef6ff)}.foundation{background:linear-gradient(135deg,#eef6ff,#fff,#fff6d6)}.icon{font-size:52px}.attraction h3{font-size:28px;color:#1b477c}.attraction h2{font-size:42px;color:var(--blue)}.countdown-card{width:min(1080px,88vw);background:linear-gradient(135deg,rgba(6,59,130,.95),rgba(8,80,158,.92));border:1px solid rgba(255,255,255,.25);border-radius:34px;padding:18px 24px;color:#fff;box-shadow:0 30px 80px rgba(6,59,130,.35)}.count-title{font-size:22px;font-weight:900;color:#ffeaa8;margin-bottom:10px}.countdown{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.countdown div{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:22px;padding:12px 8px}.countdown strong{display:block;font-size:clamp(38px,4vw,72px);font-family:Georgia,serif;color:#fff;text-shadow:0 0 18px rgba(255,224,154,.65)}.countdown span{display:block;font-size:17px;color:#ffeaa8;font-weight:900}.event-meta{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:12px;font-size:20px;font-weight:800}.event-meta span{background:rgba(255,255,255,.11);border-radius:999px;padding:8px 16px}.top-label{position:absolute;top:52px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--gold),#fff2bd);color:#6a4a00;border-radius:999px;padding:13px 32px;font-size:28px;font-weight:900;box-shadow:0 16px 45px rgba(217,168,40,.22)}.slide-bg{position:absolute;inset:0;background:radial-gradient(circle at 50% 45%,rgba(217,168,40,.18),transparent 28%),linear-gradient(135deg,#f5faff,#fff)}.center-card{width:min(1320px,86vw);background:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.9);border-radius:48px;padding:58px;text-align:center;box-shadow:var(--shadow)}.huge-card .glow-icon{font-size:108px;filter:drop-shadow(0 18px 28px rgba(217,168,40,.32));animation:pop 2s ease-in-out infinite alternate}@keyframes pop{to{transform:scale(1.08)}}.huge-card h1{font-size:54px;color:#174574}.huge-card h2{font-size:82px;color:var(--blue);margin:12px 0;background:linear-gradient(90deg,var(--blue),#0f75d1,var(--blue));-webkit-background-clip:text;color:transparent}.huge-card p{font-size:31px;line-height:1.55;color:#27415e;font-weight:700;margin:20px auto;max-width:1080px}.pill-row{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}.pill-row span{background:linear-gradient(135deg,#fff8df,#fff);border:1px solid rgba(217,168,40,.45);color:#7a5704;border-radius:999px;padding:12px 26px;font-size:23px;font-weight:900}.slide-header{text-align:center;margin-bottom:42px}.slide-header span{display:inline-block;color:#755405;background:#fff6d8;border:1px solid rgba(217,168,40,.45);padding:10px 24px;border-radius:999px;font-size:24px;font-weight:900}.slide-header h1{font-size:70px;color:var(--blue);margin:14px 0 8px}.slide-header p{font-size:27px;color:#365372;margin:0;font-weight:700}.slide-header.compact{margin-bottom:22px}.slide-header.compact h1{font-size:58px}.project-grid,.commit-grid{width:min(1460px,88vw);display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.project-card,.commit-grid div{background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.9);border-radius:34px;padding:34px 26px;text-align:center;box-shadow:var(--shadow);min-height:360px;display:flex;flex-direction:column;justify-content:center;align-items:center}.project-card b,.commit-grid strong{font-size:76px;display:block;margin-bottom:20px}.project-card h3,.commit-grid h3{font-size:31px;color:var(--blue);margin-bottom:14px}.project-card p,.commit-grid p{font-size:22px;line-height:1.45;color:#435d77;font-weight:700;margin:0}.agenda-wrap{width:min(1440px,90vw);background:rgba(255,255,255,.76);border-radius:38px;padding:28px;box-shadow:var(--shadow)}.timeline{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.timeline div{display:flex;align-items:center;gap:15px;background:#fff;border:1px solid rgba(6,59,130,.09);border-radius:22px;padding:17px 20px;box-shadow:0 12px 32px rgba(6,59,130,.08)}.timeline div.highlight{background:linear-gradient(135deg,#fff5cf,#fff);border-color:rgba(217,168,40,.5);box-shadow:0 18px 45px rgba(217,168,40,.18)}.timeline em{font-style:normal;font-size:32px}.timeline b{font-size:25px;color:#143a65}.invite-card{width:min(1280px,86vw);background:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.9);border-radius:48px;padding:62px;text-align:center;box-shadow:var(--shadow)}.invite-card h1{font-size:62px;color:var(--blue)}.invite-card p{font-size:31px;line-height:1.55;font-weight:700;color:#304d6d}.invite-meta{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}.invite-meta span{background:linear-gradient(135deg,#edf6ff,#fff);border:1px solid rgba(6,59,130,.14);border-radius:999px;padding:14px 24px;font-size:24px;font-weight:900;color:var(--blue)}.vision-slide{place-items:stretch;padding:0}.map-shape{position:absolute;right:7vw;top:16vh;width:28vw;height:62vh;border-radius:48% 34% 52% 38%;background:linear-gradient(160deg,rgba(6,59,130,.12),rgba(217,168,40,.16));display:grid;place-items:center;font-size:110px;font-weight:900;color:rgba(6,59,130,.18);font-family:Georgia,serif;border:3px solid rgba(217,168,40,.24)}.vision-content{align-self:center;width:min(900px,54vw);margin-left:8vw}.vision-content span{font-size:28px;font-weight:900;color:#755405;background:#fff4ce;border-radius:999px;padding:12px 24px}.vision-content h1{font-size:76px;color:var(--blue);margin:28px 0}.vision-content p{font-size:32px;line-height:1.55;font-weight:700;color:#2e4b69}.vision-points{display:flex;gap:16px;flex-wrap:wrap}.vision-points b{font-size:25px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue2));border-radius:18px;padding:14px 26px;box-shadow:0 14px 34px rgba(6,59,130,.22)}.thanks-card{width:min(1100px,86vw);background:rgba(255,255,255,.82);border-radius:54px;padding:76px 56px;text-align:center;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.9)}.thanks-card h1{font-size:116px;color:var(--blue)}.thanks-card p{font-size:34px;line-height:1.45;color:#28435f;font-weight:700}.thanks-card h2{font-size:56px;color:#7a5704}.footer-quote{margin-top:22px;background:linear-gradient(135deg,#fff8df,#fff);border:1px solid rgba(217,168,40,.48);border-radius:24px;padding:22px;font-size:27px;font-weight:900;color:#143a65}.slide.active .brand-row,.slide.active h1,.slide.active .main-attraction,.slide.active .countdown-card,.slide.active .center-card,.slide.active .project-card,.slide.active .timeline div,.slide.active .commit-grid div,.slide.active .invite-card,.slide.active .vision-content,.slide.active .thanks-card{animation:rise .9s ease both}.slide.active .main-attraction{animation-delay:.15s}.slide.active .countdown-card{animation-delay:.3s}@keyframes rise{from{opacity:0;transform:translateY(28px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@media(max-width:900px){.slide{padding:5vh 4vw}.hero-slide h1{font-size:40px}.brand-row{gap:12px;padding:10px 14px}.logo-mark{width:56px;height:56px;font-size:34px}.brand-row h2{font-size:28px}.attraction-grid,.project-grid,.commit-grid,.timeline{grid-template-columns:1fr}.main-attraction{padding:12px}.ribbon{font-size:18px}.attraction{min-height:128px;padding:14px}.icon{font-size:34px}.attraction h3{font-size:19px}.attraction h2{font-size:27px}.countdown{gap:8px}.countdown strong{font-size:34px}.event-meta{font-size:14px}.nav{width:44px;height:44px;font-size:34px}.prev{left:8px}.next{right:8px}.auto{display:none}.slide-header h1,.huge-card h2,.vision-content h1{font-size:40px}.huge-card h1,.invite-card h1{font-size:32px}.huge-card p,.invite-card p,.vision-content p{font-size:20px}.center-card,.invite-card,.thanks-card{padding:32px 22px;border-radius:32px}.project-card,.commit-grid div{min-height:auto;padding:24px}.project-card b,.commit-grid strong{font-size:46px}.project-card h3,.commit-grid h3{font-size:23px}.project-card p,.commit-grid p{font-size:17px}.agenda-wrap{padding:14px}.timeline b{font-size:17px}.vision-content{width:88vw;margin:0 auto}.map-shape{opacity:.25;width:70vw;right:-12vw}.thanks-card h1{font-size:64px}}