:root{--bg: #F6F7F9;--surface: #FFFFFF;--surface-2: #EDEFF3;--ink: #171A20;--muted: #555C69;--faint: #868D9A;--line: #DFE2E9;--accent: #B45309;--on-accent: #FFFFFF;--accent-soft: #FDF3E7;--ok: #1E7A4D;--ok-soft: #E1F1E8;--bad: #B3392F;--bad-soft: #FAE7E4;--warn: #9A6C1A;--warn-soft: #F8EEDA;--shadow: 0 1px 2px rgba(23,26,32,.06), 0 10px 28px -18px rgba(23,26,32,.28);--s-cs: #17707C;--s-bangla: #1F7A5C;--s-english: #2F6497;--s-gk: #6F5B3E;--s-math: #6B4A96;--s-mental: #9C4A63;--s-other: #555C69;--s-cs-bg: #DCEDF0;--s-bangla-bg: #DDEFE6;--s-english-bg: #DFE9F4;--s-gk-bg: #EFE9DF;--s-math-bg: #E9E3F3;--s-mental-bg: #F7E4E9;--s-other-bg: #EDEFF3;color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #101216;--surface: #181B21;--surface-2: #20242C;--ink: #E8EAF0;--muted: #A0A7B5;--faint: #78808E;--line: #2A2F39;--accent: #F2A93B;--on-accent: #14161A;--accent-soft: #2E2413;--ok: #5FCB92;--ok-soft: #132D20;--bad: #EE8A7D;--bad-soft: #331C19;--warn: #E3B267;--warn-soft: #2E2515;--shadow: 0 1px 2px rgba(0,0,0,.45), 0 10px 28px -18px rgba(0,0,0,.8);--s-cs: #6CC3CF;--s-bangla: #6FC9A2;--s-english: #82B2E2;--s-gk: #C2AC8A;--s-math: #B79BDD;--s-mental: #E39FB0;--s-other: #A0A7B5;--s-cs-bg: #123036;--s-bangla-bg: #123024;--s-english-bg: #16263A;--s-gk-bg: #282318;--s-math-bg: #25203A;--s-mental-bg: #33202B;--s-other-bg: #20242C;color-scheme:dark}}:root[data-theme=dark]{--bg: #101216;--surface: #181B21;--surface-2: #20242C;--ink: #E8EAF0;--muted: #A0A7B5;--faint: #78808E;--line: #2A2F39;--accent: #F2A93B;--on-accent: #14161A;--accent-soft: #2E2413;--ok: #5FCB92;--ok-soft: #132D20;--bad: #EE8A7D;--bad-soft: #331C19;--warn: #E3B267;--warn-soft: #2E2515;--shadow: 0 1px 2px rgba(0,0,0,.45), 0 10px 28px -18px rgba(0,0,0,.8);--s-cs: #6CC3CF;--s-bangla: #6FC9A2;--s-english: #82B2E2;--s-gk: #C2AC8A;--s-math: #B79BDD;--s-mental: #E39FB0;--s-other: #A0A7B5;--s-cs-bg: #123036;--s-bangla-bg: #123024;--s-english-bg: #16263A;--s-gk-bg: #282318;--s-math-bg: #25203A;--s-mental-bg: #33202B;--s-other-bg: #20242C;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:var(--bg)}body{color:var(--ink);font-family:IBM Plex Sans,Noto Sans Bengali,Segoe UI,system-ui,sans-serif;font-size:16px;line-height:1.6;-webkit-text-size-adjust:100%}:lang(bn),.bn{font-family:Noto Sans Bengali,IBM Plex Sans,sans-serif}button{font-family:inherit}[hidden]{display:none!important}.bar{position:sticky;top:0;z-index:30;background:var(--bg);border-bottom:1px solid var(--line)}.bar .wrap{display:flex;align-items:center;gap:12px;min-height:56px;flex-wrap:wrap;padding-block:8px}.mark{font-family:IBM Plex Mono,monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}.spacer{margin-left:auto}.wrap{max-width:860px;margin:0 auto;padding-inline:16px}.theme-btn{display:inline-grid;place-items:center;width:40px;height:40px;flex:none;padding:0;border-radius:8px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);cursor:pointer;-webkit-appearance:none;appearance:none}.theme-btn:hover{border-color:var(--muted)}.theme-btn svg{display:none}.theme-btn[data-mode=system] .ti-auto,.theme-btn[data-mode=light] .ti-sun,.theme-btn[data-mode=dark] .ti-moon{display:block}.menu-btn{display:none;align-items:center;gap:8px;font-size:14px;padding:9px 14px;border-radius:8px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);cursor:pointer;min-height:44px}.menu-btn .bars{display:inline-grid;gap:3px}.menu-btn .bars i{display:block;width:16px;height:2px;background:currentColor;border-radius:2px}.scrim{position:fixed;inset:0;background:#080a0e9e;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:28;border:0;padding:0}.navpanel{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.navpanel button{font-size:13px;color:var(--muted);background:none;border:0;padding:4px 2px;cursor:pointer}.navpanel button:hover{color:var(--ink)}.navpanel button.on{color:var(--accent);font-weight:600}section{padding-block:22px}.eyebrow{font-family:IBM Plex Mono,monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}h1{font-family:Newsreader,Georgia,serif;font-weight:600;font-size:clamp(28px,5vw,38px);line-height:1.1;letter-spacing:-.015em;margin:0 0 10px}h2{font-family:Newsreader,Georgia,serif;font-weight:600;font-size:22px;line-height:1.2;margin:26px 0 12px}h3{margin:0 0 4px;font-size:15px;font-weight:600;line-height:1.3}.lede{color:var(--muted);font-size:15px;margin:0 0 18px;max-width:62ch}.muted{color:var(--muted);font-size:13px}.faint{color:var(--faint);font-size:13px}.btn{font-size:13px;padding:8px 15px;border-radius:6px;border:1px solid var(--line);background:var(--surface-2);color:var(--muted);cursor:pointer}.btn:hover:not(:disabled){color:var(--ink);border-color:var(--muted)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent);font-weight:500}.btn.big{font-size:15px;padding:12px 20px;border-radius:8px;min-height:46px}.linkbtn{background:transparent;border-color:transparent;text-decoration:underline;padding-inline:6px}.hero{background:var(--accent-soft);border:1px solid var(--accent);border-radius:10px;padding:15px 17px;margin-bottom:16px}.hero-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:9px}.hero-label{font-family:IBM Plex Mono,monospace;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:500}.hero-title{display:block;font-family:Newsreader,Georgia,serif;font-size:19px;font-weight:600;line-height:1.25;color:var(--ink);margin:0 0 5px}.hero-meta{margin:0 0 8px;font-size:12px;color:var(--muted)}.hero-meta .dot{opacity:.5;padding-inline:5px}.hero-sum{margin:0 0 13px;font-size:14px;line-height:1.55;color:var(--muted);max-width:60ch}.hero-btns{display:flex;gap:9px;flex-wrap:wrap}.hero-btns .btn{font-size:13.5px;padding:10px 16px;border-radius:7px;min-height:44px}.alist{display:grid;gap:8px}.acard{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--s-other);border-radius:8px;padding:12px 14px;box-shadow:var(--shadow);cursor:pointer;display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;text-align:left;color:inherit;width:100%;font:inherit}.acard:hover{border-color:var(--muted)}.acard:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.acard.s-cs{border-left-color:var(--s-cs)}.acard.s-bangla{border-left-color:var(--s-bangla)}.acard.s-english{border-left-color:var(--s-english)}.acard.s-gk{border-left-color:var(--s-gk)}.acard.s-math{border-left-color:var(--s-math)}.acard.s-mental{border-left-color:var(--s-mental)}.acard .meta{margin:0;font-size:12px;color:var(--muted)}.acard .sum{margin:5px 0 0;font-size:12.5px;color:var(--faint);line-height:1.45}.go{font-size:22px;line-height:1;color:var(--faint)}.acard:hover .go{color:var(--accent)}.tag{display:inline-block;font-family:IBM Plex Mono,monospace;font-size:9px;letter-spacing:.07em;text-transform:uppercase;padding:1px 7px;border-radius:99px;font-weight:600;margin-left:6px;background:var(--s-other-bg);color:var(--s-other);vertical-align:1px}.tag.s-cs{background:var(--s-cs-bg);color:var(--s-cs)}.tag.s-bangla{background:var(--s-bangla-bg);color:var(--s-bangla)}.tag.s-english{background:var(--s-english-bg);color:var(--s-english)}.tag.s-gk{background:var(--s-gk-bg);color:var(--s-gk)}.tag.s-math{background:var(--s-math-bg);color:var(--s-math)}.tag.s-mental{background:var(--s-mental-bg);color:var(--s-mental)}.notice{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--warn);border-radius:6px;padding:14px 16px;font-size:13.5px;line-height:1.55;color:var(--muted);margin:0 0 16px}.notice b{color:var(--ink)}.center{text-align:center;padding-block:50px;color:var(--muted)}@media(max-width:760px){.menu-btn{display:inline-flex}.navpanel{position:fixed;top:0;right:0;bottom:0;width:min(78vw,300px);flex-direction:column;align-items:stretch;gap:6px;flex-wrap:nowrap;background:var(--surface);border-left:1px solid var(--line);z-index:29;overflow-y:auto;padding:calc(18px + env(safe-area-inset-top,0px)) 18px calc(18px + env(safe-area-inset-bottom,0px));box-shadow:-18px 0 40px -20px #00000080}.navpanel:not(.open){display:none}.navpanel button{width:100%;text-align:left;font-size:16px;padding:14px 16px;border-radius:9px;min-height:48px;display:flex;align-items:center;border:1px solid var(--line);background:var(--surface-2);color:var(--ink)}.theme-btn{width:44px;height:44px}}