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0;border-top:0;border-left:0;border-right:0;align-items:center;gap:10px;padding:11px 14px;display:flex}.pt-lesson:disabled{cursor:default;color:var(--ink-3)}.pt-lesson.on{background:var(--accent-soft)}.pt-video{aspect-ratio:16/9;background:#000;border-radius:12px;width:100%;position:relative;overflow:hidden}.pt-video iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.pt-q{border-bottom:1px solid var(--line);padding:16px}.pt-q .opts{gap:8px;margin-top:10px;display:grid}.pt-opt{border:1px solid var(--line-strong);cursor:pointer;border-radius:10px;align-items:center;gap:10px;padding:10px 12px;display:flex}.pt-opt.on{border-color:var(--accent);background:var(--accent-soft)}.pt-timer{z-index:5;background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:10px 16px;font-weight:700;display:flex;position:sticky;top:64px}.pt-pay{background:var(--surface-2);border:1px dashed var(--line-strong);border-radius:12px;gap:10px;padding:14px;display:grid}.pt-foot{border-top:1px solid var(--line);padding:18px 16px calc(18px + env(safe-area-inset-bottom));text-align:center}.pt-demo{background:var(--warn-soft);color:var(--warn);text-align:center;padding:6px 12px;font-size:13px}@media (max-width:600px){.pt-hero{padding:24px 18px}.pt-head .hide-mobile{display:none}}}@layer utilities{.relative{position:relative}.static{position:static}.m-0{margin:0}.mx-auto{margin-inline:auto}.mt-1\.5{margin-top:calc(var(--spacing) * 1.5)}.mt-2{margin-top:calc(var(--spacing) * 2)}.mt-2\.5{margin-top:calc(var(--spacing) * 2.5)}.mt-3\.5{margin-top:calc(var(--spacing) * 3.5)}.mt-4{margin-top:calc(var(--spacing) * 4)}.mb-2{margin-bottom:calc(var(--spacing) * 2)}.mb-3{margin-bottom:calc(var(--spacing) * 3)}.mb-4{margin-bottom:calc(var(--spacing) * 4)}.block{display:block}.flex{display:flex}.grid{display:grid}.hidden{display:none}.table{display:table}.h-1\.5{height:calc(var(--spacing) * 1.5)}.w-auto{width:auto}.max-w-\[520px\]{max-width:520px}.min-w-\[200px\]{min-width:200px}.min-w-\[220px\]{min-width:220px}.flex-1{flex:1}.items-start{align-items:flex-start}.justify-between{justify-content:space-between}.gap-1\.5{gap:calc(var(--spacing) * 1.5)}.gap-2{gap:calc(var(--spacing) * 2)}.gap-4{gap:calc(var(--spacing) * 4)}.rounded{border-radius:.25rem}.border{border-style:var(--tw-border-style);border-width:1px}.bg-surface-2{background-color:var(--surface-2)}.pt-0{padding-top:0}.pb-0{padding-bottom:0}.text-center{text-align:center}.text-base{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}.text-lg{font-size:var(--text-lg);line-height:var(--tw-leading,var(--text-lg--line-height))}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.text-xl{font-size:var(--text-xl);line-height:var(--tw-leading,var(--text-xl--line-height))}.text-\[13px\]{font-size:13px}.text-\[28px\]{font-size:28px}.text-\[34px\]{font-size:34px}.font-extrabold{--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold)}.tracking-wide{--tw-tracking:var(--tracking-wide);letter-spacing:var(--tracking-wide)}.text-accent{color:var(--accent)}.text-danger{color:var(--danger)}.text-ink-2{color:var(--ink-2)}.uppercase{text-transform:uppercase}@media (min-width:64rem){.lg\:grid-cols-\[2fr_1fr\]{grid-template-columns:2fr 1fr}.lg\:grid-cols-\[3fr_2fr\]{grid-template-columns:3fr 2fr}}}:root{--accent:#0f766e;--accent-ink:#fff;--accent-soft:var(--accent)}@supports (color:color-mix(in lab, red, red)){:root{--accent-soft:color-mix(in srgb, var(--accent) 12%, transparent)}}:root{--bg:#f4f6f8;--surface:#fff;--surface-2:#f8fafb;--line:#e3e8ee;--line-strong:#cfd7e0;--ink:#17212b;--ink-2:#4a5867;--ink-3:#7b8896;--ok:#15803d;--ok-soft:#e7f6ec;--warn:#b45309;--warn-soft:#fdf3e2;--danger:#c0262d;--danger-soft:#fdecec;--info:#1d4ed8;--info-soft:#e8effd;--radius:12px;--radius-sm:8px;--shadow:0 1px 2px #1018280d, 0 1px 3px #1018280f;--shadow-lg:0 12px 32px #10182829;--sidebar:252px;--font:"Segoe UI", Roboto, "Noto Sans Bengali", "Nirmala UI", "Helvetica Neue", Arial, system-ui, sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0e1419;--surface:#151d24;--surface-2:#1a232c;--line:#26323d;--line-strong:#344250;--ink:#e6edf3;--ink-2:#b2bfcc;--ink-3:#7e8c9a;--ok-soft:#12301f;--warn-soft:#33260f;--danger-soft:#3a1618;--info-soft:#152442;--accent-soft:var(--accent)}@supports (color:color-mix(in lab, red, red)){:root:not([data-theme=light]){--accent-soft:color-mix(in srgb, var(--accent) 22%, transparent)}}:root:not([data-theme=light]){--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#0e1419;--surface:#151d24;--surface-2:#1a232c;--line:#26323d;--line-strong:#344250;--ink:#e6edf3;--ink-2:#b2bfcc;--ink-3:#7e8c9a;--ok-soft:#12301f;--warn-soft:#33260f;--danger-soft:#3a1618;--info-soft:#152442;--accent-soft:var(--accent)}@supports (color:color-mix(in lab, red, red)){:root[data-theme=dark]{--accent-soft:color-mix(in srgb, var(--accent) 22%, transparent)}}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}