/* f71.info — Shell & visor. Helmet design-studio system: carbon twill, smoked iridium visor, EPS/liner cross-sections, colourway liveries. */
:root{
 --paper:#E7E5DF;--paper-2:#F3F2ED;--card:#FBFAF6;--shelf:#DAD7CE;
 --ink:#16181B;--text:#262A2F;--muted:#565C63;--line:#C9C5BA;
 --carbon:#121417;--carbon-2:#1D2125;--carbon-3:#2A2F35;--chalk:#F3F2EC;--fog:#B7BCC0;
 --lime:#CDEB3A;--red:#D9381E;--red-ink:#AE2B14;
 --iri:linear-gradient(100deg,#1F7FB0,#2FB58F 48%,#E0B43C);
 --f-disp:"Genos","Anek Bangla","Noto Sans Bengali",system-ui,sans-serif;
 --f-body:"Public Sans","Noto Sans Bengali",system-ui,sans-serif;
 --r-visor:16px 30px 30px 6px;
 --focus:#D9381E;
 color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:120px}
body{margin:0;background:var(--paper);color:var(--text);font:400 17px/1.7 var(--f-body);overflow-x:hidden}
:lang(bn) body,body:lang(bn){font-family:"Noto Sans Bengali","Public Sans",system-ui,sans-serif;line-height:1.8}
img,svg{max-width:100%}
a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--red);text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{color:var(--red-ink)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 16px}
@media (min-width:600px){.wrap{padding:0 28px}}
@media (min-width:1200px){.wrap{padding:0 40px}}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--lime);color:var(--ink);padding:12px 18px;border-radius:10px;font-weight:700;text-decoration:none}
.skip:focus{top:12px}
h1,h2,h3{font-family:var(--f-disp);color:var(--ink);margin:0}
:lang(bn) h1,:lang(bn) h2,:lang(bn) h3{font-family:"Anek Bangla","Genos",sans-serif;font-stretch:108%;letter-spacing:0;font-style:normal}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 24px;border-radius:var(--r-visor);font:700 16px/1.2 var(--f-body);text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .15s,background .15s,color .15s,border-color .15s;text-align:center}
.btn::after{content:"";width:9px;height:9px;border:solid currentColor;border-width:2.5px 2.5px 0 0;transform:rotate(45deg);margin-left:2px;flex:none}
.btn-ink{background:var(--ink);color:var(--chalk)}
.btn-ink::after{border-color:var(--lime)}
.btn-ink:hover{background:#000;color:var(--lime)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:#DDF56A;color:var(--ink)}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:var(--chalk)}
@media (prefers-reduced-motion:no-preference){.btn:hover{transform:translateY(-2px)}}

/* ---------- header ---------- */
.hd{position:sticky;top:0;z-index:50}
.hd-top{background:conic-gradient(from 45deg,#1B1E22 25%,#121417 0 50%,#1B1E22 0 75%,#121417 0) 0 0/8px 8px;color:var(--chalk);--focus:var(--lime)}
.hd-row{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--chalk);min-height:44px}
.brand:hover{color:var(--chalk)}
.bm{width:42px;height:36px;flex:none}
.bm-s{fill:var(--chalk)}.bm-v{fill:var(--lime)}
.bw{display:flex;flex-direction:column;line-height:1}
.bn{font:italic 800 31px/.9 "Genos",sans-serif;letter-spacing:.01em}
.bt{font-size:12px;color:var(--fog);margin-top:3px;line-height:1.2}
.hd-tools{display:flex;align-items:center;gap:8px}
.lsw{display:flex;border:1px solid rgba(243,242,236,.28);border-radius:12px 20px 20px 4px;overflow:hidden}
.lsw a{display:flex;align-items:center;min-height:44px;padding:0 12px;color:var(--chalk);text-decoration:none;font-size:14px;font-weight:600}
.lsw a[aria-current]{background:var(--chalk);color:var(--ink)}
.lsw a:not([aria-current]):hover{background:rgba(243,242,236,.1)}
.hd-cta{display:none;min-height:44px;font-size:15px;padding:0 18px}
@media (min-width:720px){.hd-cta{display:inline-flex}}
.tg{display:inline-flex;align-items:center;gap:8px;min-height:44px;min-width:44px;padding:0 10px;background:var(--carbon-3);color:var(--chalk);border:1px solid rgba(243,242,236,.2);border-radius:12px 18px 18px 4px;cursor:pointer;font:600 14px/1 var(--f-body)}
.tg-ic{display:grid;gap:4px;width:20px}
.tg-ic i{display:block;height:3px;border-radius:3px;background:var(--lime);transition:transform .2s,opacity .2s}
.tg-ic i:nth-child(2){width:75%}.tg-ic i:nth-child(3){width:50%}
.tg-t{display:none}
@media (min-width:420px){.tg-t{display:inline}}
.hd.open .tg-ic i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hd.open .tg-ic i:nth-child(2){opacity:0}
.hd.open .tg-ic i{width:100%}
.hd.open .tg-ic i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* visor band = nav */
.visor{position:relative;background:linear-gradient(180deg,#2B3137,#171A1E 55%,#0E1012);color:#DADDD8;--focus:var(--lime);overflow:hidden}
.visor::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--iri)}
.visor ul{list-style:none;margin:0;padding:0}
.visor a{display:flex;align-items:center;gap:10px;color:#DADDD8;text-decoration:none;font-weight:600;font-size:15px;line-height:1.3}
.visor a:hover{color:#fff}
.visor a[aria-current]{color:var(--lime)}
.vn{font:italic 700 14px/1 "Genos",sans-serif;color:var(--lime);opacity:.85}
@media (max-width:979.98px){
 .visor{display:none;position:absolute;left:0;right:0;top:100%;max-height:calc(100vh - 60px);overflow-y:auto;box-shadow:0 18px 30px rgba(0,0,0,.35);border-radius:0 0 28px 28px}
 .hd.open .visor{display:block}
 .visor ul{padding:6px 0 16px}
 .visor li+li{border-top:1px solid rgba(243,242,236,.08)}
 .visor a{min-height:54px;padding:10px 0}
 .visor a[aria-current]{box-shadow:inset 3px 0 0 var(--lime);padding-left:12px}
}
@media (min-width:980px){
 .tg{display:none}
 .visor ul{display:flex;flex-wrap:wrap;gap:0 4px}
 .visor a{min-height:48px;padding:0 14px;position:relative}
 .visor li:first-child a{padding-left:0}
 .visor a[aria-current]::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;background:var(--lime);border-radius:3px 3px 0 0}
 .visor li:first-child a[aria-current]::after{left:0}
}
@media (prefers-reduced-motion:no-preference){
 .visor::before{content:"";position:absolute;top:-40%;bottom:-40%;width:18%;left:-30%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.07) 45%,rgba(120,220,200,.08) 55%,transparent);transform:skewX(-20deg);animation:sheen 11s ease-in-out infinite;pointer-events:none}
 @keyframes sheen{0%,55%{left:-30%}100%{left:115%}}
}

/* ---------- helmets ---------- */
.helm{display:block;overflow:visible}
.h-sh{fill:var(--h-shell,var(--chalk));stroke:var(--ink);stroke-width:2.2;stroke-linejoin:round}
.h-lv{fill:var(--h-stripe,var(--red))}
.h-lv2{fill:var(--h-stripe2,var(--ink))}
.h-sp{fill:var(--ink)}
.h-vz{fill:url(#f71iri);stroke:var(--ink);stroke-width:2.2;stroke-linejoin:round}
.h-hl{fill:none;stroke:rgba(255,255,255,.6);stroke-width:3;stroke-linecap:round}
.h-eps{display:none}
.h-tr{fill:none;stroke:var(--ink);stroke-width:6;stroke-linecap:round}
.h-vt{fill:none;stroke:var(--ink);stroke-width:3;stroke-linecap:round}
.h-pv{fill:var(--ink)}.h-pv2{fill:var(--h-shell,var(--chalk))}
.lv0{--h-shell:#F4F3EE;--h-stripe:#D9381E;--h-stripe2:#16181B}
.lv1{--h-shell:#23272C;--h-stripe:#CDEB3A;--h-stripe2:#F3F2EC}
.lv2{--h-shell:#D9381E;--h-stripe:#16181B;--h-stripe2:#F3F2EC}
.lv3{--h-shell:#CDEB3A;--h-stripe:#16181B;--h-stripe2:#D9381E}
.lv4{--h-shell:#6A7179;--h-stripe:#F3F2EC;--h-stripe2:#CDEB3A}
.lv5{--h-shell:#1E5563;--h-stripe:#E0B43C;--h-stripe2:#F3F2EC}
.lv1 .h-pv,.lv1 .h-sp{fill:#0B0C0E}
.helm-draw .h-sh{fill:rgba(243,242,237,.55);stroke-width:1.6}
.helm-draw .h-lv{fill:var(--lime)}.helm-draw .h-lv2{fill:none;stroke:var(--ink);stroke-width:1}
.helm-draw .h-vz{fill:url(#f71iri);fill-opacity:.35;stroke-width:1.6}
.helm-draw .h-sp{fill:none;stroke:var(--ink);stroke-width:1.4}
.helm-draw .h-eps{display:inline;fill:none;stroke:var(--muted);stroke-width:1.2;stroke-dasharray:4 4}
.helm-draw .h-tr{stroke-width:3}.helm-draw .h-vt{stroke-width:2}
.helm-draw .h-pv2{fill:var(--paper)}
.h-dm path{fill:none;stroke:var(--red);stroke-width:1.1}
.h-dm circle{fill:var(--paper);stroke:var(--red);stroke-width:1.4}

/* ---------- home hero ---------- */
.hero{position:relative;background-color:var(--paper-2);background-image:linear-gradient(rgba(22,24,27,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(22,24,27,.055) 1px,transparent 1px);background-size:24px 24px;background-position:-1px -1px;overflow:hidden}
.hero-g{display:grid;gap:32px;padding-top:28px;padding-bottom:36px}
.hero-c{position:relative;min-width:0}
.plt{display:inline-flex;align-items:stretch;margin:0 0 18px;border:2px solid var(--ink);border-radius:8px;overflow:hidden;background:var(--card);max-width:100%}
.plt-m{display:flex;align-items:center;background:var(--ink);color:var(--lime);font:italic 800 18px/1 "Genos",sans-serif;padding:6px 10px}
.plt-t{display:flex;align-items:center;padding:6px 12px;font-size:14px;font-weight:600;line-height:1.35}
.hero h1{position:relative;z-index:1;font-weight:700;font-style:italic;font-size:clamp(2.1rem,1.4rem + 2.7vw,3.55rem);line-height:.96;letter-spacing:-.005em;text-wrap:balance;max-width:19ch}
.hero h1:lang(bn){font-style:normal;font-size:clamp(1.85rem,1.3rem + 2.4vw,3.2rem);line-height:1.38;max-width:20ch}
.lead{position:relative;z-index:1}
.lead p{font-size:18px;max-width:62ch;margin:18px 0 0}
.acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.spec{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:0;border-top:1.5px solid var(--ink);max-width:640px}
.spec li{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:15px;font-weight:600;line-height:1.4}
.spec li::before{content:"";flex:none;width:18px;height:12px;border-radius:6px 10px 10px 2px;background:var(--lime);box-shadow:inset 0 0 0 1.5px var(--ink)}
@media (min-width:600px){.spec{grid-template-columns:repeat(3,1fr)}.spec li{border-bottom:0;padding:12px 14px 0 0}.spec li+li{padding-left:14px;border-left:1px solid var(--line)}}
.drw{position:absolute;right:-26px;top:58px;width:150px;opacity:.2;pointer-events:none}
@media (min-width:600px){.drw{width:210px;right:0}}
@media (min-width:980px){
 .hero-g{grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:56px;padding-top:52px;padding-bottom:64px;align-items:start}
 .drw{position:relative;right:auto;top:auto;width:min(420px,78%);opacity:1;margin:36px 0 0 auto}
}
/* game bay: visor-cut window with iridium rim */
.bay{position:relative;padding:2px;background:var(--iri);border-radius:90px 22px 22px 22px/64px 22px 22px 22px;box-shadow:0 30px 60px -30px rgba(18,20,23,.6);min-width:0;scroll-margin-top:110px}
.bay-in{background:conic-gradient(from 45deg,#1B1E22 25%,#15181B 0 50%,#1B1E22 0 75%,#15181B 0) 0 0/8px 8px;border-radius:88px 20px 20px 20px/62px 20px 20px 20px;padding:18px 12px 16px;color:var(--chalk);--focus:var(--lime)}
.bay-h{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 6px 0 46px;min-height:36px}
.bay-t{font-weight:700;font-size:15px;color:var(--chalk)}
.bay-x{font:italic 800 20px/1 "Genos",sans-serif;color:var(--lime)}
.legend{list-style:none;margin:12px 4px 0;padding:0;display:grid;gap:8px;font-size:14px;color:#C9CDC9;line-height:1.5}
.legend li{display:flex;align-items:center;gap:10px}
.lg{flex:none;width:26px;height:26px;border-radius:7px 7px 7px 2px;display:grid;place-items:center}
.lg::before{content:"";width:64%;height:56%;background:var(--carbon);-webkit-mask:var(--ic) center/contain no-repeat;mask:var(--ic) center/contain no-repeat}
.lg-s{background:var(--lime);--ic:var(--ic-helm)}
.lg-m{background:#E0432A;--ic:var(--ic-crack)}
:root{--ic-helm:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 34'%3E%3Cpath fill-rule='evenodd' d='M5 27C1 18 3 7 16 3C26 0 36 5 38 15C39 19 38 23 36 26L34 30C33 32 31 32 29 32L14 31C10 31 7 30 5 27ZM23 11C29 10 35 12 37.5 15.5L37 21C32 20 27 20 22.5 21C21.5 17 21.5 13.5 23 11Z'/%3E%3C/svg%3E");--ic-crack:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 40'%3E%3Cpath d='M20 2L23 14 33 6 27 17 38 20 27 23 34 34 22 26 20 38 17 26 7 33 13 23 2 20 13 17 6 7 17 14Z'/%3E%3C/svg%3E")}
@media (min-width:600px){.bay-in{padding:22px 18px 18px}.legend{grid-template-columns:1fr 1fr}}

/* shell cross-section rule: shell / EPS / liner */
.layers{display:grid;grid-template-rows:6px 10px 4px}
.layers i{display:block}
.l-sh{background:var(--carbon)}
.l-eps{background-color:#EFEDE6;background-image:radial-gradient(circle,rgba(22,24,27,.2) 1.1px,transparent 1.4px);background-size:6px 6px}
.l-ln{background:var(--red)}

/* ---------- inner page head ---------- */
.ph{background:var(--paper-2);padding:22px 0 30px}
.ph-g{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"bc v" "h1 h1" "ld ld";column-gap:16px;align-items:start}
.ph-c{display:contents}
.bc{grid-area:bc;align-self:center}
.bc ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;align-items:center;font-size:14px;line-height:1.5}
.bc li{display:flex;align-items:center}
.bc li+li::before{content:"";width:14px;height:2px;margin:0 8px;background:var(--red);transform:skewX(-30deg)}
.bc a{display:inline-flex;align-items:center;min-height:44px;color:var(--muted);text-decoration:none}
.bc a:hover{color:var(--ink);text-decoration:underline}
.bc [aria-current]{color:var(--ink);font-weight:600}
.ph h1{grid-area:h1;margin-top:10px;font-weight:700;font-style:italic;font-size:clamp(2rem,1.4rem + 2.6vw,3.5rem);line-height:1.02;text-wrap:balance;max-width:20ch}
.ph h1:lang(bn){font-style:normal;font-size:clamp(1.7rem,1.25rem + 1.9vw,2.8rem);line-height:1.4}
.ph .lead{grid-area:ld}
.ph .lead p{font-size:18px;margin:14px 0 0;max-width:64ch}
.ph-v{grid-area:v;width:96px;position:relative}
.ph-v::after{content:"";position:absolute;left:10%;right:6%;bottom:-6px;height:10px;border-radius:50%;background:radial-gradient(closest-side,rgba(22,24,27,.28),transparent)}
@media (min-width:860px){
 .ph{padding:30px 0 44px}
 .ph-g{grid-template-columns:minmax(0,1fr) 300px;grid-template-areas:"bc v" "h1 v" "ld v";column-gap:48px}
 .ph-v{width:100%;align-self:center;margin-top:10px}
 .ph-v::after{bottom:-14px;height:18px}
}
@media (prefers-reduced-motion:no-preference){.ph-v .helm{animation:bob 6s ease-in-out infinite}@keyframes bob{50%{transform:translateY(-4px) rotate(-1.5deg)}}}

/* ---------- page layout ---------- */
.page{padding:28px 0 64px}
.pg{display:grid;gap:26px;grid-template-columns:minmax(0,1fr)}
.content{min-width:0;container-type:inline-size;max-width:760px}
@media (min-width:980px){
 .pg{grid-template-columns:minmax(0,1fr) 290px;gap:64px;padding-top:12px}
 .side{grid-column:2;grid-row:1}
 .content{grid-column:1;grid-row:1}
 .side-in{position:sticky;top:130px}
}
.content>*:first-child{margin-top:0}
.content p{margin:0 0 1em}
.content h3{font-weight:600;font-size:23px;line-height:1.2;margin:1.5em 0 .5em}
.content h3:lang(bn){font-size:20px;line-height:1.5}
.content ul,.content ol{margin:0 0 1.1em;padding:0}
.content li{margin:.4em 0}
.content ul>li{list-style:none;position:relative;padding-left:28px}
.content ul>li::before{content:"";position:absolute;left:2px;top:.62em;width:14px;height:9px;border-radius:5px 8px 8px 2px;background:var(--lime);box-shadow:inset 0 0 0 1.5px var(--ink)}
.content ol{counter-reset:ol}
.content ol>li{list-style:none;position:relative;padding-left:40px;counter-increment:ol}
.content ol>li::before{content:counter(ol);position:absolute;left:0;top:.1em;min-width:28px;height:28px;display:grid;place-items:center;border-radius:8px 12px 12px 3px;background:var(--ink);color:var(--lime);font:italic 700 16px/1 "Genos",sans-serif}
.content strong{color:var(--ink)}
.content table{display:block;overflow-x:auto;border-collapse:collapse;margin:0 0 1.2em;font-size:15px;max-width:100%}
.content th,.content td{border:1px solid var(--line);padding:8px 12px;text-align:left;vertical-align:top}
.content th{background:var(--shelf);color:var(--ink)}
.content blockquote{margin:0 0 1.2em;padding:14px 18px;border-left:4px solid var(--lime);background:var(--card)}
.intro{margin-bottom:8px}
.sec{margin-top:52px}
.sec-h{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start;margin-bottom:18px}
.sec-n{display:grid;place-items:center;min-width:48px;height:40px;padding:0 10px;margin-top:2px;background:var(--ink);color:var(--lime);border-radius:12px 18px 18px 3px;font:italic 800 21px/1 "Genos","Anek Bangla",sans-serif;position:relative}
.sec-n::after{content:"";position:absolute;left:8px;right:8px;bottom:-9px;height:5px;background:linear-gradient(#EFEDE6 0 60%,var(--red) 0);border-radius:0 0 3px 3px;border:1px solid var(--ink);border-top:0}
.sec-h h2{font-weight:700;font-style:italic;font-size:clamp(1.65rem,1.2rem + 1.5vw,2.35rem);line-height:1.06;text-wrap:balance;padding-top:2px}
.sec-h h2:lang(bn){font-style:normal;font-size:clamp(1.4rem,1.1rem + 1vw,1.85rem);line-height:1.42;padding-top:0}
@container (min-width:640px){.sec-h{grid-template-columns:64px minmax(0,1fr);gap:18px}.sec-n{min-width:64px;height:46px;font-size:24px}}
.sec-free{margin-top:1.2em}

/* FAQ with D-ring toggles */
.fq{border-top:2px solid var(--ink)}
.fq details{border-bottom:1px solid var(--line)}
.fq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:14px 0;cursor:pointer;list-style:none;font-weight:600;color:var(--ink);line-height:1.45}
.fq summary::-webkit-details-marker{display:none}
.fq summary:hover .fq-q{text-decoration:underline;text-decoration-color:var(--red)}
.dring{position:relative;flex:none;width:30px;height:26px;transition:transform .25s}
.dring i{position:absolute;top:1px;width:14px;height:24px;border:3px solid var(--muted);border-left-width:2px;border-radius:2px 12px 12px 2px}
.dring i:first-child{left:4px}.dring i:last-child{left:12px;border-color:var(--ink)}
.fq details[open] .dring{transform:rotate(90deg)}
.fq details[open] .dring i:last-child{border-color:var(--red)}
.fq-a{padding:0 0 18px}
.fq-a>*:last-child{margin-bottom:0}

/* CTA plate */
.plate{margin-top:56px;display:grid;grid-template-columns:minmax(0,1fr);gap:14px;padding:22px;border-radius:26px 26px 26px 6px;background:conic-gradient(from 45deg,#1B1E22 25%,#121417 0 50%,#1B1E22 0 75%,#121417 0) 0 0/8px 8px;color:var(--chalk);position:relative;overflow:hidden;--focus:var(--lime)}
.plate::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--iri)}
.plate p{margin:0;font-size:18px;font-weight:600;line-height:1.5}
.plate .helm{width:110px}
.plate .btn{justify-self:start}
@container (min-width:560px){.plate{grid-template-columns:120px minmax(0,1fr);align-items:center;column-gap:22px}.plate .helm{grid-row:span 2}}

/* side: fit-chart TOC + demo card */
.toc{border:1.5px solid var(--ink);border-radius:14px 22px 22px 4px;background:var(--card)}
.toc summary{display:flex;align-items:center;justify-content:space-between;min-height:50px;padding:0 16px;cursor:pointer;list-style:none;font:600 15px/1.2 var(--f-body);color:var(--ink)}
.toc summary::-webkit-details-marker{display:none}
.toc summary::after{content:"";width:9px;height:9px;border:solid var(--ink);border-width:0 2.5px 2.5px 0;transform:rotate(45deg);margin-top:-4px;transition:transform .2s}
.toc[open] summary::after{transform:rotate(225deg);margin-top:4px}
.toc ol{list-style:none;margin:0;padding:4px 10px 10px;border-top:1px solid var(--line)}
.toc a{display:flex;gap:10px;align-items:flex-start;padding:10px 6px;min-height:44px;text-decoration:none;color:var(--text);font-size:15px;line-height:1.4;border-radius:8px}
.toc a:hover{background:var(--paper)}
.toc a[aria-current]{color:var(--ink);font-weight:700;background:var(--paper);box-shadow:inset 3px 0 0 var(--red)}
.tn{flex:none;min-width:26px;height:22px;display:grid;place-items:center;border-radius:6px 9px 9px 2px;background:var(--ink);color:var(--lime);font:italic 700 13px/1 "Genos","Anek Bangla",sans-serif}
.dcard{display:none;margin-top:18px;padding:20px;border-radius:14px 22px 22px 4px;background:var(--ink);color:var(--chalk);--focus:var(--lime)}
.dc-slot{display:block;width:56px;height:14px;background:repeating-linear-gradient(90deg,var(--lime) 0 12px,transparent 12px 20px);border-radius:3px;margin-bottom:12px}
.dc-t{margin:0;font:italic 700 24px/1.1 "Genos",sans-serif;color:var(--chalk)}
.dc-t:lang(bn){font:700 19px/1.45 "Anek Bangla",sans-serif}
.dc-p{margin:8px 0 16px;font-size:15px;line-height:1.55;color:#CBCFCB}
.dcard .btn{width:100%;background:var(--lime);color:var(--ink)}
@media (min-width:980px){.dcard{display:block}}

/* ---------- related colourways ---------- */
.rel{background:var(--shelf);padding:48px 0 44px;position:relative}
.rel::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:var(--carbon)}
.rel-h{font-weight:700;font-style:italic;font-size:clamp(1.8rem,1.3rem + 1.6vw,2.6rem);line-height:1.05;margin-bottom:22px}
.rel-h:lang(bn){font-style:normal;font-size:clamp(1.5rem,1.2rem + 1vw,2rem);line-height:1.4}
.rel-g{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,250px),1fr));gap:14px}
.rc{position:relative;display:grid;align-content:start;gap:6px;padding:18px 18px 54px;background:var(--card);border:1.5px solid var(--ink);border-radius:22px 22px 22px 5px;text-decoration:none;color:var(--text);container-type:inline-size;transition:transform .2s,box-shadow .2s}
.rc:hover{color:var(--text);box-shadow:6px 6px 0 var(--ink)}
.rc .helm{width:104px;margin-bottom:6px;transition:transform .3s}
.rc strong{font:italic 700 22px/1.1 "Genos",sans-serif;color:var(--ink)}
.rc strong:lang(bn),:lang(bn) .rc strong{font:700 18px/1.45 "Anek Bangla",sans-serif}
.rc-d{font-size:15px;line-height:1.5;color:var(--muted)}
.rc-go{position:absolute;right:14px;bottom:12px;width:34px;height:34px;border-radius:50%;background:var(--ink)}
.rc-go::after{content:"";position:absolute;left:10px;top:12px;width:9px;height:9px;border:solid var(--lime);border-width:2.5px 2.5px 0 0;transform:rotate(45deg)}
@media (prefers-reduced-motion:no-preference){.rc:hover{transform:translate(-3px,-3px)}.rc:hover .helm{transform:rotate(-6deg) translateY(-2px)}}
.note{margin:24px 0 0;font-size:14px;line-height:1.6;color:var(--muted);max-width:90ch}

/* ---------- footer: chin strap ---------- */
.ft{background:var(--carbon);color:#C9CCC6;--focus:var(--lime)}
.strap{position:relative;height:26px;background:repeating-linear-gradient(90deg,#23282D 0 2px,#2E343A 2px 4px);box-shadow:inset 0 3px 0 #0B0C0E,inset 0 -3px 0 #0B0C0E}
.strap::before,.strap::after{content:"";position:absolute;left:0;right:0;height:0;border-top:1.5px dashed rgba(205,235,58,.55)}
.strap::before{top:6px}.strap::after{bottom:6px}
.dr{position:absolute;left:12%;top:-8px;width:62px;height:42px}
.dr i{position:absolute;display:block}
.dr i:first-child{inset:0;border:5px solid #C3C7C9;border-radius:12px 20px 20px 12px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.35),0 3px 0 #0B0C0E}
.dr i:last-child{left:20px;top:3px;bottom:3px;width:5px;border-radius:3px;background:#9EA3A6}
.ft .wrap{padding-top:42px;padding-bottom:26px}
.ft-g{display:grid;gap:30px}
@media (min-width:760px){.ft-g{grid-template-columns:1.5fr 1fr 1fr;gap:44px}}
.ft-b p{font-size:14px;line-height:1.65;margin:16px 0 0;max-width:52ch}
.ft h2{font:600 13px/1.3 var(--f-body);color:var(--lime);margin:0 0 8px}
.ft h2:lang(en){text-transform:uppercase;letter-spacing:.12em}
.fl{list-style:none;margin:0;padding:0}
.fl a{display:flex;align-items:center;min-height:44px;color:#E4E6E1;text-decoration:none;font-size:15px;line-height:1.35}
.fl a:hover{color:var(--lime);text-decoration:underline;text-decoration-color:var(--lime)}
.ft-bot{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:32px;padding-top:18px;border-top:1px solid rgba(243,242,236,.12);font-size:14px}
.age{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:var(--red);color:#fff;font:italic 800 20px/1 "Genos",sans-serif;box-shadow:0 0 0 3px var(--carbon),0 0 0 5px var(--red)}

/* ---------- 404 ---------- */
.visor-nf{height:8px}
.nf{padding:60px 0 90px}
.nf-c{margin:0;font:italic 800 clamp(5rem,20vw,11rem)/1 "Genos",sans-serif;color:transparent;-webkit-text-stroke:2px var(--ink)}
.nf h1{font-style:italic;font-size:clamp(2rem,1.5rem + 2vw,3rem);margin:10px 0}
.nf h1:lang(bn){font-style:normal}
.nf p{max-width:52ch}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.defs{position:absolute;width:0;height:0;overflow:hidden}
@media (max-width:979.98px){.bay{width:100%;max-width:560px;justify-self:center}}