:root{--bg: #002449;--bg-deep: #001a36;--header-top: #003266;--header-bottom: #0a509c;--line: rgba(255, 255, 255, .14);--text: #ffffff;--text-soft: #dbe7f5;--muted: #a9c1dd;--accent: #fa4d00;--accent-hi: #ff6a24;--good: #3ddc84;--bad: #ff6b6b;--shell: 1180px}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px;-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Roboto,Segoe UI,system-ui,-apple-system,Noto Sans,Noto Sans Bengali,Arial,sans-serif;font-size:17px;line-height:1.65}a{color:#8cc4ff}img{max-width:100%;height:auto}h1,h2,h3{line-height:1.25;margin:0 0 14px}h2{font-size:28px;font-weight:700;text-transform:uppercase;letter-spacing:.01em}h3{margin-top:28px;font-size:20px;font-weight:600}p{margin:0 0 16px}.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:8px 22px;border:1px solid transparent;border-radius:100px;background:none;color:#fff;font:inherit;font-size:15px;font-weight:500;text-transform:uppercase;text-decoration:none;white-space:nowrap;cursor:pointer;transition:background-color .15s,border-color .15s}.btn-accent{background:var(--accent)}.btn-accent:hover{background:var(--accent-hi)}.btn-ghost{border-color:#ffffff8c}.btn-ghost:hover{border-color:#fff;background:#ffffff14}.btn-lg{min-height:52px;padding:12px 32px;font-size:16px}.btn-sm{min-height:36px;padding:6px 16px;font-size:13px}.btn-block{width:100%}.site-header{position:sticky;top:0;z-index:20;background:linear-gradient(var(--header-top),var(--header-bottom));box-shadow:0 4px 16px #00000040}.header-row{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:64px}.brand{display:flex;flex-shrink:0}.brand img{display:block;width:148px;height:24px}.header-actions{display:flex;align-items:center;gap:10px}.lang{position:relative}.lang-current{display:flex;align-items:center;gap:6px;min-height:38px;padding:4px 12px;border-radius:100px;background:#00000038;font-size:14px;font-weight:600;list-style:none;cursor:pointer}.lang-current::-webkit-details-marker{display:none}.lang-current:after{content:"";width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px)}.lang-menu{position:absolute;right:0;top:calc(100% + 8px);min-width:190px;padding:6px;border-radius:12px;background:var(--bg-deep);box-shadow:0 12px 30px #00000073}.lang-link{display:flex;gap:10px;padding:8px 10px;border-radius:8px;color:#fff;font-size:15px;text-decoration:none}.lang-link:hover,.lang-link.is-active{background:#ffffff1a}.nav-strip{border-top:1px solid var(--line)}.nav-row{display:flex;justify-content:center;gap:4px;overflow-x:auto;padding-top:6px;padding-bottom:6px;scrollbar-width:none}.nav-row::-webkit-scrollbar{display:none}.nav-pill{flex-shrink:0;padding:6px 14px;border-radius:100px;color:#fff;font-size:14px;font-weight:500;text-decoration:none}.nav-pill:hover{background:#ffffff1f}.hero{padding:24px 0 8px;background:radial-gradient(ellipse at 50% 0,rgba(10,80,156,.9),transparent 60%),var(--bg);text-align:center}.hero-inner{max-width:900px}.kicker{margin:0 0 12px;color:var(--accent-hi);font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.hero-title{margin:0 0 16px;font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.15}.hero-lead{max-width:720px;margin:0 auto 28px;color:var(--text-soft);font-size:18px}.hero-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.promo-row{display:inline-flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 14px;margin-top:26px}.promo-label{color:var(--muted);font-size:14px;text-transform:uppercase;letter-spacing:.06em}.promo-code{padding:6px 16px;border:2px dashed rgba(255,255,255,.45);border-radius:10px;font-family:SFMono-Regular,Menlo,Consolas,monospace;font-size:18px;font-weight:700;letter-spacing:.05em}.promo-copy{padding:0;border:0;background:none;color:var(--accent-hi);font:inherit;font-size:15px;font-weight:600;cursor:pointer}.hero-banner{width:min(100%,1213px,calc((100vh - 150px)*1.5));margin:0 auto 32px;padding:0 20px}.hero-banner img{display:block;width:100%;border-radius:20px}.bonus-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:36px 0 0;padding:0;list-style:none}.bonus-strip li{display:grid;gap:2px;padding:4px 16px}.bonus-strip li+li{border-left:1px solid var(--line)}.bonus-value{color:var(--accent-hi);font-size:26px;font-weight:900;line-height:1.2}.bonus-name{font-weight:600}.bonus-text{color:var(--muted);font-size:14px}.byline{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 20px;margin:32px 0 0;padding:16px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}.content{padding-top:16px;padding-bottom:48px}.section,.article{padding:40px 0;border-bottom:1px solid var(--line)}.section p,.article p{color:var(--text-soft)}.article h1{font-size:clamp(28px,3.6vw,38px);font-weight:800;margin-bottom:20px}.article h2{margin-top:44px}.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px}.def-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 48px;margin:8px 0 16px}.def-list dt{margin-bottom:4px;font-weight:600}.def-list dd{margin:0;color:var(--muted);font-size:16px}.facts,.data-table{width:100%;border-collapse:collapse;font-size:16px}.facts th,.facts td,.data-table th,.data-table td{padding:12px 10px 12px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.facts th{width:32%;color:var(--muted);font-weight:500}.data-table thead th{color:var(--muted);font-size:13px;font-weight:600;text-transform:uppercase}.table-scroll{overflow-x:auto;margin-bottom:8px}.steps,.check-list,.cross-list{margin:0 0 16px;padding:0;list-style:none}.steps{counter-reset:step}.steps li{position:relative;padding:8px 0 8px 46px;counter-increment:step}.steps li:before{content:counter(step);position:absolute;left:0;top:6px;display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--accent);font-size:15px;font-weight:700}.check-list li,.cross-list li{position:relative;padding:5px 0 5px 28px}.check-list li:before,.cross-list li:before{position:absolute;left:0;top:5px;font-weight:700}.check-list li:before{content:"✓";color:var(--good)}.cross-list li:before{content:"✕";color:var(--bad)}.note{padding-left:16px;border-left:3px solid var(--accent);font-size:16px}.faq-item{border-bottom:1px solid var(--line)}.faq-item summary{position:relative;padding:18px 44px 18px 0;font-weight:600;list-style:none;cursor:pointer}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";position:absolute;right:4px;top:12px;color:var(--accent-hi);font-size:26px;line-height:1.2}.faq-item[open] summary:after{content:"−"}.faq-item p{margin:0;padding:0 0 18px}#responsible h2{display:flex;align-items:center;gap:12px}.lang-inline{display:flex;flex-wrap:wrap;gap:10px 28px}.lang-inline a{color:#fff;font-weight:500;text-decoration:none}.lang-inline a:hover{color:var(--accent-hi)}.site-footer{background:var(--bg-deep);color:var(--muted);font-size:14px}.footer-inner{padding-top:32px;padding-bottom:32px}.footer-badges{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff;font-weight:500}.age-badge{display:inline-grid;place-items:center;flex-shrink:0;width:38px;height:38px;border:2px solid var(--bad);border-radius:50%;color:#fff;font-size:13px;font-weight:800}.footer-langs{display:flex;flex-wrap:wrap;gap:8px 18px;margin:18px 0}.footer-langs a{color:#cfe0f5;text-decoration:none}.footer-langs a[aria-current]{color:var(--accent-hi)}.copyright{margin:0}.not-found{min-height:50vh;padding-top:80px;padding-bottom:80px}.install-dialog{width:min(560px,calc(100% - 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