:root{
  --bg:#060b14;--bg2:#09111f;--panel:#0d1727;--panel2:#111e32;--panel3:#15233a;--text:#f2f7ff;--muted:#9db0c9;
  --line:rgba(148,163,184,.18);--line-strong:rgba(96,165,250,.3);--blue:#60a5fa;--cyan:#22d3ee;--violet:#8b5cf6;--gold:#f3c76d;
  --max:1280px;--shadow:0 30px 90px rgba(0,0,0,.42);--radius:24px;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI","Noto Sans Bengali",sans-serif;color-scheme:dark
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:
  radial-gradient(circle at 12% 6%,rgba(67,97,238,.18),transparent 30%),
  radial-gradient(circle at 91% 24%,rgba(34,211,238,.09),transparent 28%),
  linear-gradient(180deg,#070c16 0%,#060b14 55%,#07101a 100%);color:var(--text);line-height:1.68;overflow-x:hidden}
body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:-2;opacity:.12;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(to bottom,black,transparent 80%)}
a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:none}.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}.social-svg{width:18px;height:18px;display:block;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.social-svg .fill{fill:currentColor;stroke:none}.social-svg .fill-text{fill:currentColor;stroke:none;font-family:Arial,sans-serif;font-size:13px;font-weight:800}.glow{position:fixed;pointer-events:none;filter:blur(110px);opacity:.12;border-radius:50%;z-index:-1;animation:glowFloat 16s ease-in-out infinite alternate}.glow-a{width:38vw;height:38vw;background:#4f46e5;left:-17vw;top:8vh}.glow-b{width:31vw;height:31vw;background:#06b6d4;right:-14vw;top:43vh;animation-delay:-7s}@keyframes glowFloat{to{transform:translate3d(3vw,-2vh,0) scale(1.08)}}
.site-header{max-width:var(--max);margin:14px auto 0;min-height:74px;padding:11px 14px 11px 16px;display:flex;align-items:center;justify-content:space-between;gap:20px;position:sticky;top:10px;z-index:50;border:1px solid var(--line);border-radius:20px;background:rgba(8,15,27,.76);backdrop-filter:blur(20px) saturate(140%);box-shadow:0 12px 45px rgba(0,0,0,.22)}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);min-width:0}.brand:hover{text-decoration:none}.brand-mark{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(135deg,#4f46e5 5%,#0ea5e9 55%,#22d3ee);font-weight:950;font-size:15px;letter-spacing:-.03em;box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 8px 24px rgba(14,165,233,.22)}.brand strong,.brand small{display:block;white-space:nowrap}.brand strong{font-size:14px;letter-spacing:.005em}.brand small{font-size:11px;color:var(--muted);margin-top:1px}.header-right{display:flex;align-items:center;gap:14px;min-width:0}.header-social{display:flex;align-items:center;gap:5px;padding-right:12px;border-right:1px solid var(--line)}.header-social a{width:33px;height:33px;display:grid;place-items:center;border:1px solid transparent;border-radius:10px;color:#9fb3cf;transition:.2s ease}.header-social a:hover{color:#fff;border-color:var(--line-strong);background:linear-gradient(145deg,rgba(96,165,250,.12),rgba(34,211,238,.06));transform:translateY(-2px)}
nav{display:flex;align-items:center;gap:17px;font-size:12.5px;white-space:nowrap}nav>a{color:#9fb0c7;transition:.2s}nav>a:hover{color:#fff}.nav-cta,.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;border-radius:13px;padding:11px 16px;font-weight:800;transition:.22s ease;position:relative;overflow:hidden}.nav-cta,.primary{background:linear-gradient(135deg,#4f46e5,#0ea5e9 75%,#22d3ee);color:#fff;box-shadow:0 10px 30px rgba(37,99,235,.22)}.nav-cta:before,.primary:before{content:"";position:absolute;inset:0;transform:translateX(-120%);background:linear-gradient(100deg,transparent,rgba(255,255,255,.18),transparent);transition:.55s}.nav-cta:hover:before,.primary:hover:before{transform:translateX(120%)}.nav-cta:hover,.primary:hover{transform:translateY(-2px);filter:brightness(1.06)}.secondary{border:1px solid var(--line);background:rgba(17,29,49,.68);color:var(--text)}.secondary:hover{border-color:var(--line-strong);background:var(--panel2);transform:translateY(-2px)}
.hero{max-width:var(--max);margin:54px auto 34px;padding:34px 24px 78px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(330px,.72fr);gap:76px;align-items:center;position:relative}.hero-copy{animation:fadeUp .7s ease both}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:10.5px;letter-spacing:.17em;font-weight:900;color:var(--cyan);margin-bottom:12px;text-transform:uppercase}.eyebrow:before{content:"";width:20px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}.hero h1{font-size:clamp(50px,6.2vw,82px);line-height:.94;letter-spacing:-.058em;margin:0 0 26px;max-width:820px}.hero h1 span{background:linear-gradient(100deg,#fff 0%,#8cdcff 48%,#a78bfa 92%);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-lead{font-size:16.5px;color:#b7c5d8;max-width:780px;margin:0}.hero-lead strong{color:#eaf2ff}.hero-actions{display:flex;gap:11px;flex-wrap:wrap;margin:28px 0 24px}.trust-row{display:flex;gap:8px;flex-wrap:wrap}.trust-row span{font-size:10.5px;border:1px solid var(--line);border-radius:999px;padding:7px 10px;color:#a9b8cd;background:rgba(14,22,37,.62);backdrop-filter:blur(8px)}.hero-visual{display:grid;place-items:center;position:relative;min-height:550px;animation:fadeUp .8s .08s ease both}.hero-visual:before,.hero-visual:after{position:absolute;z-index:4;padding:10px 13px;border:1px solid rgba(96,165,250,.24);border-radius:14px;background:rgba(11,20,34,.78);backdrop-filter:blur(14px);box-shadow:0 18px 40px rgba(0,0,0,.28);color:#dbe8fb;font-size:11px;font-weight:750;letter-spacing:.015em;animation:floatBadge 5s ease-in-out infinite}.hero-visual:before{content:"300 HTML Pages";left:-6%;top:16%}.hero-visual:after{content:"10,000 Vocabulary";right:-5%;bottom:16%;animation-delay:-2.4s}@keyframes floatBadge{50%{transform:translateY(-8px)}}.cover-wrap{max-width:365px;position:relative;transform:perspective(1200px) rotateY(-7deg) rotateX(1deg);filter:drop-shadow(0 38px 65px rgba(0,0,0,.54));transition:.38s cubic-bezier(.2,.8,.2,1)}.cover-wrap:before{content:"";position:absolute;inset:-22px;z-index:-1;border-radius:28px;background:radial-gradient(circle at 50% 50%,rgba(34,211,238,.2),rgba(79,70,229,.06) 45%,transparent 70%);filter:blur(18px)}.cover-wrap:hover{transform:perspective(1200px) rotateY(-2deg) rotateX(0) translateY(-8px) scale(1.015)}.cover-wrap img{width:100%;height:auto;display:block;border-radius:10px;border:1px solid rgba(255,255,255,.08)}
.section{max-width:var(--max);margin:0 auto;padding:80px 24px;animation:fadeUp .7s ease both}.section h1,.section h2{font-size:clamp(32px,4vw,50px);line-height:1.06;letter-spacing:-.04em;margin:0 0 16px}.section h3{letter-spacing:-.015em}.section-head{display:flex;align-items:end;justify-content:space-between;gap:36px;margin-bottom:28px}.section-head>p{max-width:510px;color:var(--muted);margin:0}.project-card{display:grid;grid-template-columns:1.22fr .78fr;gap:42px;background:linear-gradient(145deg,rgba(14,22,37,.9),rgba(14,30,50,.72));border:1px solid var(--line);border-radius:28px;padding:40px;margin-bottom:32px;box-shadow:0 24px 70px rgba(0,0,0,.18);position:relative;overflow:hidden}.project-card:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:rgba(34,211,238,.06);right:-140px;top:-140px;filter:blur(15px)}.project-card p{color:#b4c2d6}.project-card dl{margin:0;position:relative;z-index:1}.project-card dl div{border-bottom:1px solid var(--line);padding:12px 0}.project-card dt{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.project-card dd{margin:3px 0 0;font-weight:750}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.cards article{padding:25px;background:linear-gradient(145deg,rgba(14,22,37,.92),rgba(17,29,47,.8));border:1px solid var(--line);border-radius:20px;transition:.25s ease;position:relative;overflow:hidden}.cards article:before{content:"";position:absolute;left:0;top:0;width:3px;height:0;background:linear-gradient(var(--cyan),var(--violet));transition:.3s}.cards article:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:0 18px 44px rgba(0,0,0,.22)}.cards article:hover:before{height:100%}.cards h3{font-size:19px;margin:0 0 9px}.cards p{color:var(--muted);font-size:13.5px}.cards a{font-size:12.5px;font-weight:750}.split{display:grid;grid-template-columns:1fr .8fr;gap:46px;align-items:center}.check-list{list-style:none;padding:0;margin:22px 0 0}.check-list li{position:relative;padding:9px 0 9px 31px;color:#bcc9da}.check-list li:before{content:"✓";position:absolute;left:0;top:8px;width:20px;height:20px;border-radius:50%;display:grid;place-items:center;color:#06131c;background:linear-gradient(135deg,var(--cyan),#93c5fd);font-weight:950;font-size:11px}.quote{padding:36px;border-radius:24px;border:1px solid var(--line);background:radial-gradient(circle at 20% 0%,rgba(99,102,241,.16),transparent 40%),var(--panel);box-shadow:0 22px 60px rgba(0,0,0,.16)}.quote p{font-size:21px;line-height:1.55;margin-top:0}.quote strong{color:var(--gold)}.author-box{display:grid;grid-template-columns:220px 1fr;gap:34px;align-items:center;border:1px solid var(--line);border-radius:26px;background:linear-gradient(145deg,rgba(13,23,39,.78),rgba(9,18,31,.5));padding:34px}.author-box>img{width:220px;height:270px;object-fit:cover;object-position:center top;border-radius:20px;border:1px solid var(--line);box-shadow:0 22px 55px rgba(0,0,0,.28)}.author-box p{color:#b7c6da;max-width:780px}.social-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.social-links a{min-height:38px;display:inline-flex;align-items:center;gap:8px;padding:8px 11px;border-radius:12px;border:1px solid var(--line);font-size:11px;font-weight:700;color:#b9c8dc;background:rgba(17,30,50,.7);transition:.2s}.social-links a .social-svg{width:15px;height:15px}.social-links a:hover{color:#fff;border-color:var(--line-strong);background:linear-gradient(145deg,rgba(96,165,250,.12),rgba(34,211,238,.05));transform:translateY(-2px)}.faq details{max-width:920px;border:1px solid transparent;border-bottom-color:var(--line);padding:17px 10px;transition:.2s}.faq details[open]{border-color:var(--line);border-radius:14px;background:rgba(15,26,44,.5);padding:17px 16px;margin:7px 0}.faq summary{cursor:pointer;font-weight:750;font-size:16px}.faq p{color:var(--muted)}.cta{max-width:var(--max);margin:44px auto 74px;padding:38px 40px;border-radius:26px;border:1px solid var(--line);background:linear-gradient(130deg,rgba(79,70,229,.17),rgba(8,145,178,.13));display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:0 24px 70px rgba(0,0,0,.2);position:relative;overflow:hidden}.cta:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;right:-90px;top:-120px;background:rgba(34,211,238,.08);filter:blur(8px)}.cta>*{position:relative;z-index:1}.cta h2{font-size:31px;margin:0 0 8px}.cta p{margin:0;color:var(--muted)}footer{max-width:var(--max);margin:auto;padding:26px 24px 42px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px}footer>div{display:flex;gap:12px;flex-wrap:wrap}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media(max-width:1160px){.site-header{margin-left:14px;margin-right:14px}nav>a:not(.nav-cta){display:none}.hero{gap:38px}.hero-visual:before{left:0}.hero-visual:after{right:0}}
@media(max-width:960px){.hero{grid-template-columns:1fr;gap:16px;margin-top:28px}.hero-copy{order:1}.hero-visual{order:2;min-height:430px}.cover-wrap{max-width:290px}.hero-visual:before{left:10%;top:20%}.hero-visual:after{right:10%;bottom:15%}.project-card,.split{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,1fr)}.section-head{align-items:start;flex-direction:column}.author-box{grid-template-columns:170px 1fr}.author-box>img{width:170px;height:205px}.cta{align-items:flex-start;flex-direction:column}}
@media(max-width:760px){.header-social{display:none}}
@media(max-width:620px){.site-header{top:6px;margin:7px 8px 0;padding:8px 9px;border-radius:16px;min-height:62px}.brand{gap:9px;min-width:0}.brand>span:last-child{min-width:0}.brand strong{font-size:11.5px;max-width:48vw;overflow:hidden;text-overflow:ellipsis}.brand small{font-size:9.5px}.brand-mark{width:38px;height:38px;border-radius:11px;font-size:13px}.header-right{gap:6px}nav{gap:6px}.nav-cta{padding:9px 11px;font-size:11px;border-radius:11px}.hero{margin-top:10px;padding:26px 16px 48px}.hero h1{font-size:43px;line-height:.97}.hero-lead{font-size:14.5px}.hero-actions{margin-top:24px}.primary,.secondary{width:100%;padding:12px 14px}.trust-row span{font-size:9.5px}.hero-visual{min-height:360px}.cover-wrap{max-width:245px}.hero-visual:before,.hero-visual:after{font-size:9px;padding:8px 10px}.hero-visual:before{left:2%;top:15%}.hero-visual:after{right:1%;bottom:14%}.section{padding:54px 16px}.section h1,.section h2{font-size:34px}.project-card{margin-left:10px;margin-right:10px;padding:25px;border-radius:20px}.cards{grid-template-columns:1fr}.cards article{padding:21px}.author-box{grid-template-columns:1fr;padding:24px;border-radius:20px}.author-box>img{width:145px;height:175px}.social-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:100%}.social-links a{justify-content:flex-start;min-width:0}.social-links a span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cta{margin:25px 10px 48px;padding:27px;border-radius:20px}.cta h2{font-size:27px}footer{padding:24px 16px 34px;flex-direction:column}}
@media(max-width:360px){.brand small{display:none}.brand strong{max-width:45vw}.hero h1{font-size:38px}.hero-visual:before{display:none}.social-links{grid-template-columns:1fr 1fr}.project-card{margin-left:7px;margin-right:7px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}