:root{
  --primary:#0ea472;--secondary:#06b6d4;--accent:#7c5cff;
  --bg:#f5f8fc;--surface:rgba(255,255,255,.72);--surface-solid:#fff;
  --text:#10202b;--muted:#64748b;--border:rgba(15,35,50,.09);
  --shadow:0 18px 55px rgba(20,42,60,.10);--shadow-sm:0 8px 28px rgba(20,42,60,.08);
  --radius:22px;--radius-sm:14px;--ease:cubic-bezier(.2,.8,.3,1);
}
[data-theme="dark"]{
  --bg:#071017;--surface:rgba(13,25,35,.70);--surface-solid:#0d1923;
  --text:#edf8f7;--muted:#91a5b4;--border:rgba(255,255,255,.09);
  --shadow:0 18px 55px rgba(0,0,0,.35);--shadow-sm:0 8px 28px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Hind Siliguri","Noto Sans Bengali",sans-serif;background:var(--bg);color:var(--text);line-height:1.65;overflow-x:hidden}
button,input{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid color-mix(in srgb,var(--secondary) 70%,transparent);outline-offset:3px}
#scrollProgress{position:fixed;inset:0 0 auto 0;height:4px;transform-origin:left;transform:scaleX(0);background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));z-index:9999}
.container{width:min(1280px,calc(100% - 32px));margin:auto}
.bg-blob{position:fixed;border-radius:50%;filter:blur(70px);opacity:.16;pointer-events:none;z-index:-1;animation:float 12s ease-in-out infinite}
.blob-a{width:330px;height:330px;background:var(--secondary);top:10%;left:-140px}
.blob-b{width:360px;height:360px;background:var(--accent);right:-160px;top:48%;animation-delay:-4s}
.blob-c{width:260px;height:260px;background:var(--primary);left:35%;bottom:-120px;animation-delay:-7s}
@keyframes float{50%{transform:translate(35px,-25px) scale(1.08)}}
header{position:sticky;top:0;z-index:1000;background:color-mix(in srgb,var(--bg) 76%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.15rem}
.logo-mark{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary),var(--accent));box-shadow:0 8px 22px color-mix(in srgb,var(--primary) 25%,transparent)}
.nav-links{display:flex;align-items:center;gap:5px}
.nav-links a{padding:9px 12px;border-radius:10px;color:var(--muted);font-weight:600;transition:.25s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:color-mix(in srgb,var(--primary) 10%,transparent)}
.nav-actions{display:flex;align-items:center;gap:8px}
.icon-btn,.menu-btn{width:42px;height:42px;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:12px;display:grid;place-items:center}
.menu-btn{display:none}
.hero{padding:82px 0 70px;min-height:680px;display:grid;grid-template-columns:1.08fr .92fr;gap:55px;align-items:center}
.badge-pill{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border:1px solid color-mix(in srgb,var(--primary) 25%,var(--border));background:color-mix(in srgb,var(--primary) 8%,transparent);border-radius:999px;color:var(--primary);font-weight:700}
h1,h2,h3{line-height:1.18;margin:0 0 16px}
h1{font-size:clamp(2.65rem,6vw,5.3rem);letter-spacing:-.035em}
.gradient-text{background:linear-gradient(100deg,var(--primary),var(--secondary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy{font-size:1.12rem;color:var(--muted);max-width:680px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}
.btn{border:0;border-radius:13px;padding:13px 19px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.25s var(--ease)}
.btn-primary{color:#fff;background:linear-gradient(110deg,var(--primary),var(--secondary));box-shadow:0 10px 28px color-mix(in srgb,var(--primary) 25%,transparent)}
.btn-ghost{color:var(--text);border:1px solid var(--border);background:var(--surface)}
.btn:hover{transform:translateY(-2px)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:30px}
.stat{padding:12px 0}.stat strong{display:block;font-size:1.7rem}.stat span{font-size:.88rem;color:var(--muted)}
.progress-card{position:relative;padding:26px;border:1px solid var(--border);border-radius:30px;background:var(--surface);backdrop-filter:blur(18px);box-shadow:var(--shadow)}
.progress-card:before{content:"";position:absolute;inset:-1px;border-radius:30px;padding:1px;background:linear-gradient(135deg,color-mix(in srgb,var(--primary) 45%,transparent),transparent 45%,color-mix(in srgb,var(--accent) 35%,transparent));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.eyebrow{font-size:.8rem;color:var(--muted);font-weight:700}.card-head h3{margin:3px 0}
.rings{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;text-align:center}
.ring{position:relative;width:100px;height:100px;margin:auto}.ring svg{width:100%;height:100%;transform:rotate(-90deg)}.ring circle{fill:none;stroke-width:8}.ring .track{stroke:color-mix(in srgb,var(--muted) 14%,transparent)}.ring .value{stroke:url(#grad);stroke-linecap:round;stroke-dasharray:264;stroke-dashoffset:264;transition:stroke-dashoffset 1.3s var(--ease)}.ring b{position:absolute;inset:0;display:grid;place-items:center;font-size:1rem}
.mini-list{display:grid;gap:10px;margin-top:25px}.mini{display:flex;gap:11px;align-items:center;padding:11px;border-radius:13px;background:color-mix(in srgb,var(--text) 4%,transparent)}.mini-icon{width:32px;height:32px;display:grid;place-items:center;border-radius:9px;background:color-mix(in srgb,var(--primary) 12%,transparent)}
.floating{position:absolute;padding:9px 12px;border:1px solid var(--border);border-radius:12px;background:var(--surface);box-shadow:var(--shadow-sm);font-size:.85rem;font-weight:700;backdrop-filter:blur(12px);animation:float 6s ease-in-out infinite}.float-1{right:-28px;top:12%}.float-2{left:-32px;bottom:19%}.float-3{right:2%;bottom:-16px;animation-delay:-2s}
section{padding:82px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}.section-head p{max-width:650px;color:var(--muted);margin:0}.kicker{color:var(--primary);font-weight:800;font-size:.88rem}.section-head h2{font-size:clamp(2rem,4vw,3rem)}
.search-wrap{display:grid;grid-template-columns:1fr auto;gap:12px;margin-bottom:15px}.search{position:relative}.search input{width:100%;height:54px;border:1px solid var(--border);border-radius:15px;background:var(--surface);color:var(--text);padding:0 18px 0 48px;outline:0;box-shadow:var(--shadow-sm)}.search svg{position:absolute;left:17px;top:16px;color:var(--muted)}
.filter-row{display:flex;gap:8px;overflow:auto;padding-bottom:8px}.chip{white-space:nowrap;border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:8px 12px;border-radius:999px;font-weight:600}.chip.active{color:#fff;border-color:transparent;background:linear-gradient(110deg,var(--primary),var(--secondary))}
.count{font-size:.78em;opacity:.75}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.module-card,.badge-card,.law-card,.skill-card,.faq-item{border:1px solid var(--border);background:var(--surface);backdrop-filter:blur(14px);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:.3s var(--ease)}
.module-card{padding:19px;display:flex;flex-direction:column;min-height:245px}.module-card:hover,.badge-card:hover,.law-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.module-top{display:flex;justify-content:space-between;align-items:center}.module-icon{width:45px;height:45px;border-radius:13px;display:grid;place-items:center;background:color-mix(in srgb,var(--primary) 11%,transparent);font-size:1.3rem}.save{border:0;background:transparent;color:var(--muted);font-size:1.25rem}.save.saved{color:#f59e0b}
.tag{display:inline-flex;width:max-content;padding:4px 9px;border-radius:999px;font-size:.75rem;font-weight:700;background:color-mix(in srgb,var(--secondary) 10%,transparent);color:var(--secondary);margin:12px 0 7px}.module-card h3{font-size:1.12rem;margin:0 0 7px}.module-card p{color:var(--muted);font-size:.91rem;margin:0 0 12px}.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto}.small-tag{font-size:.72rem;color:var(--muted);padding:3px 7px;background:color-mix(in srgb,var(--text) 5%,transparent);border-radius:7px}.level{display:flex;gap:4px;margin-top:13px}.dot{width:7px;height:7px;border-radius:50%;background:color-mix(in srgb,var(--muted) 25%,transparent)}.dot.on{background:var(--primary)}.meta{display:flex;justify-content:space-between;margin-top:10px;color:var(--muted);font-size:.75rem}
.badge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.badge-card{padding:22px;position:relative;overflow:hidden}.badge-card:after{content:"";position:absolute;width:120px;height:120px;border-radius:50%;right:-55px;top:-55px;background:var(--badge-color,var(--primary));opacity:.12}.badge-icon{font-size:2rem}.badge-card h3{margin:10px 0 2px}.badge-card small,.badge-card p{color:var(--muted)}.badge-card p{font-size:.9rem}.bar{height:8px;background:color-mix(in srgb,var(--muted) 14%,transparent);border-radius:999px;overflow:hidden}.bar span{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));transition:width 1.2s var(--ease)}.percent{display:flex;justify-content:space-between;font-size:.82rem;margin:10px 0 6px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.tab{border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:10px 14px;border-radius:11px;font-weight:700}.tab.active{background:var(--text);color:var(--bg)}
.laws{display:grid;gap:12px}.law-card{padding:16px;display:flex;gap:15px;align-items:flex-start}.law-num{min-width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-weight:800}.law-card h3{font-size:1rem;margin:0 0 3px}.law-card p{margin:0;color:var(--muted);font-size:.9rem}.promise{padding:28px;border-left:4px solid var(--primary);background:color-mix(in srgb,var(--primary) 7%,var(--surface));border-radius:0 18px 18px 0}.promise p{font-size:1.2rem;margin:0}.motto-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.motto{padding:20px;border:1px solid var(--border);border-radius:18px;background:var(--surface)}.motto strong{display:block;color:var(--primary);font-size:1.15rem;margin-bottom:5px}.motto span{color:var(--muted)}
.timeline{position:relative;max-width:950px;margin:auto}.timeline:before{content:"";position:absolute;left:22px;top:0;bottom:0;width:2px;background:linear-gradient(var(--primary),var(--secondary),var(--accent))}.event{position:relative;padding:0 0 34px 62px}.event-dot{position:absolute;left:14px;top:2px;width:18px;height:18px;border-radius:50%;background:var(--surface-solid);border:5px solid var(--primary);box-shadow:0 0 0 5px color-mix(in srgb,var(--primary) 10%,transparent)}.year{display:inline-block;padding:4px 9px;border-radius:999px;background:color-mix(in srgb,var(--primary) 10%,transparent);color:var(--primary);font-weight:800;font-size:.8rem}.event h3{margin:7px 0 4px}.event p{margin:0;color:var(--muted)}
.skills{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.skill-card{overflow:hidden}.skill-header{padding:18px;display:flex;align-items:center;justify-content:space-between;cursor:pointer}.skill-title{display:flex;align-items:center;gap:12px}.skill-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:color-mix(in srgb,var(--accent) 10%,transparent)}.chev{transition:.3s}.skill-card.open .chev{transform:rotate(180deg)}.skill-body{max-height:0;overflow:hidden;transition:max-height .45s var(--ease)}.skill-card.open .skill-body{max-height:400px}.checklist{padding:0 18px 18px;display:grid;gap:8px}.check{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:.92rem}.check b{color:var(--primary)}
.quiz-box{max-width:850px;margin:auto;padding:28px;border:1px solid var(--border);background:var(--surface);border-radius:26px;box-shadow:var(--shadow)}.quiz-top{display:flex;justify-content:space-between;gap:15px;align-items:center}.quiz-progress{height:7px;background:color-mix(in srgb,var(--muted) 14%,transparent);border-radius:99px;overflow:hidden;margin:15px 0 25px}.quiz-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));width:0;transition:.4s}.question{font-size:1.35rem;font-weight:800}.options{display:grid;gap:10px;margin:22px 0}.option{width:100%;text-align:left;border:1px solid var(--border);background:color-mix(in srgb,var(--text) 3%,transparent);color:var(--text);padding:13px 15px;border-radius:13px;transition:.2s}.option:hover:not(:disabled){border-color:var(--secondary);transform:translateX(3px)}.option.correct{border-color:#10b981;background:color-mix(in srgb,#10b981 12%,transparent)}.option.wrong{border-color:#ef4444;background:color-mix(in srgb,#ef4444 10%,transparent)}.feedback{min-height:30px;color:var(--muted)}.result{text-align:center;padding:20px}.result-score{font-size:4rem;font-weight:800;background:linear-gradient(110deg,var(--primary),var(--accent));-webkit-background-clip:text;color:transparent}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.faq-item{overflow:hidden}.faq-q{width:100%;border:0;background:transparent;color:var(--text);padding:18px;text-align:left;display:flex;justify-content:space-between;align-items:center;font-weight:800}.plus{transition:.3s;font-size:1.4rem}.faq-item.open .plus{transform:rotate(45deg)}.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}.faq-a p{margin:0;padding:0 18px 18px;color:var(--muted)}
.cta{padding:45px;border-radius:30px;color:#fff;background:linear-gradient(110deg,#0ea472,#06b6d4,#7c5cff);position:relative;overflow:hidden}.cta:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;right:-90px;top:-150px;background:rgba(255,255,255,.13)}.cta h2{max-width:650px;font-size:clamp(2rem,4vw,3rem)}.cta p{max-width:650px;opacity:.9}.cta .btn{background:#fff;color:#10202b;position:relative;z-index:1}
footer{border-top:1px solid var(--border);padding:55px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:35px}.footer-grid h3{font-size:1rem}.footer-grid p,.footer-grid a{color:var(--muted);font-size:.9rem}.footer-links{display:grid;gap:6px}.socials{display:flex;gap:8px;margin-top:15px}.socials a{width:36px;height:36px;border:1px solid var(--border);border-radius:10px;display:grid;place-items:center}.bottom{border-top:1px solid var(--border);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;color:var(--muted);font-size:.82rem}
#backTop{position:fixed;right:18px;bottom:18px;width:46px;height:46px;border:0;border-radius:14px;background:var(--text);color:var(--bg);box-shadow:var(--shadow);display:grid;place-items:center;opacity:0;transform:translateY(15px);pointer-events:none;transition:.3s;z-index:900}#backTop.show{opacity:1;transform:none;pointer-events:auto}
.reveal{opacity:0;transform:translateY(25px);transition:opacity .7s var(--ease),transform .7s var(--ease)}.reveal.visible{opacity:1;transform:none}
.empty{padding:50px;text-align:center;border:1px dashed var(--border);border-radius:20px;color:var(--muted);grid-column:1/-1}
@media(max-width:980px){.hero{grid-template-columns:1fr}.badge-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.nav-links{position:absolute;top:72px;left:16px;right:16px;display:none;flex-direction:column;align-items:stretch;padding:10px;background:var(--surface-solid);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.menu-btn{display:grid}.nav-actions .icon-btn{width:40px;height:40px}}
@media(max-width:650px){.container{width:min(100% - 22px,1280px)}section{padding:62px 0}.hero{padding-top:55px;gap:35px}.stats{grid-template-columns:repeat(2,1fr)}.rings{grid-template-columns:repeat(3,1fr)}.ring{width:78px;height:78px}.badge-grid,.skills,.faq-grid,.footer-grid,.motto-grid{grid-template-columns:1fr}.search-wrap{grid-template-columns:1fr}.floating{display:none}.bottom{flex-direction:column;gap:5px}.section-head{align-items:start;flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}

/* Multi-page detail additions — visual language kept identical to the original UI */
.detail-page{max-width:980px;margin:auto}.detail-hero{padding:35px 0 22px}.detail-hero h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.1;margin:12px 0}.detail-block{padding:22px;border:1px solid var(--border);background:var(--surface);backdrop-filter:blur(14px);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin:14px 0}.detail-block h2{margin-top:0}.detail-block ul{padding-left:23px}.step{display:grid;grid-template-columns:38px 1fr;gap:12px;margin:13px 0}.step-no{width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,var(--primary),var(--secondary),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800}.callout{padding:16px;border-left:4px solid var(--primary);background:color-mix(in srgb,var(--primary) 7%,transparent);border-radius:12px}.search-page{padding:35px 0}.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0 25px}.filter-row button{border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:8px 12px;border-radius:999px;font:inherit;cursor:pointer}.filter-row button.active{color:var(--primary);background:color-mix(in srgb,var(--primary) 9%,transparent);border-color:color-mix(in srgb,var(--primary) 25%,transparent)}.detail-actions{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}.related{margin-top:22px}.related .module-card{min-height:180px}.mini-note{color:var(--muted);font-size:.9rem}.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.check-row{padding:12px;border:1px solid var(--border);border-radius:14px;background:var(--surface)}@media(max-width:650px){.check-grid{grid-template-columns:1fr}}