/* v4 sub-pages (prefix sb-). Family motif comes from :root --sb-pat / --sb-a1 / --sb-a2 set inline per page. */
.sb-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.sb-g{width:14px;height:14px;fill:var(--sb-a1,#FF5B1A);flex:none;display:inline-block;vertical-align:middle}
.sb-sec{overflow:hidden;--sb-ease:cubic-bezier(.2,.8,.2,1)}
.sb-sec.dark{--sb-fg:#F4F5F8;--sb-fg2:#A3A8B8;--sb-ln:#262a3b;--sb-cd:#0E1018;--sb-mu:#6E7286;--sb-at:#FFA77F}
.sb-sec.paper{--sb-fg:#0B0C10;--sb-fg2:#4B4E58;--sb-ln:#D6D6D2;--sb-cd:#FFFFFF;--sb-mu:#8F8A80;--sb-at:#C2410C}
.sb-sec>.wrap{position:relative;z-index:1}
.sb-mo{position:absolute;right:0;top:0;width:min(46vw,620px);height:420px;background-image:var(--sb-pat);background-size:24px 24px;opacity:.32;-webkit-mask-image:radial-gradient(ellipse at 100% 0,#000 0,transparent 70%);mask-image:radial-gradient(ellipse at 100% 0,#000 0,transparent 70%);pointer-events:none}
.sb-sec.paper .sb-mo{opacity:.45}
.sb-sec button:focus-visible,.sb-facts button:focus-visible,.sb-rr a:focus-visible{outline:2px solid var(--sb-a1);outline-offset:3px}
.sb-sec small,.sb-facts small{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase}

/* ── hero banner wrapper + placeholder ── */
.sb-ban{position:relative;max-height:560px}
.sb-ph{position:relative;overflow:hidden;border:1px solid #22263A;background:rgba(13,15,22,.78);padding:clamp(20px,3vw,34px);min-height:380px;display:flex;flex-direction:column;gap:18px;color:#F4F5F8}
.sb-ph-pat{position:absolute;inset:0;background-image:var(--sb-pat);background-size:24px;opacity:.35;-webkit-mask-image:linear-gradient(200deg,#000,transparent 60%);mask-image:linear-gradient(200deg,#000,transparent 60%)}
.sb-ph>*{position:relative}
.sb-ph-hd{display:flex;justify-content:space-between;gap:12px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#A3A8B8}
.sb-ph-hd span{display:flex;gap:8px;align-items:center}.sb-ph-hd em{font-style:normal;color:#FFA77F}
.sb-ph-n{font-size:clamp(26px,2.6vw,36px);line-height:1.1;letter-spacing:-.03em;font-weight:600}
.sb-ph-l{list-style:none;margin:auto 0 0;padding:0;display:grid;gap:8px}
.sb-ph-l li{display:flex;gap:10px;align-items:center;padding:10px 12px;border:1px solid #22263A;font-size:15px;color:#A3A8B8;animation:sb-phl 12s calc(var(--j) * 2s) infinite}
@keyframes sb-phl{0%,14%{border-color:var(--sb-a1);color:#fff;background:rgba(255,91,26,.1)}18%,100%{border-color:#22263A;color:#A3A8B8;background:none}}

/* ── facts: instrument tiles ── */
.sb-facts{background:var(--night);padding:clamp(8px,2vw,24px) 0 clamp(56px,7vw,96px);position:relative}
.sb-ft-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.sb-ft{all:unset;box-sizing:border-box;cursor:pointer;display:flex;flex-direction:column;gap:10px;padding:20px;border:1px solid #22263A;background:linear-gradient(180deg,#0E1018,#08090E);color:#F4F5F8;min-height:232px;position:relative;overflow:hidden;transition:border-color .35s,transform .35s var(--sb-ease,ease)}
.sb-ft::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:var(--sb-a1);transform:scaleX(0);transform-origin:left}
.sb-ft[aria-pressed=true]{border-color:rgba(255,91,26,.65);transform:translateY(-4px)}
.sb-ft[aria-pressed=true]::before{transform:scaleX(1)}
.sb-ft.is-play::before{animation:sb-prog var(--sb-dur,3.2s) linear both}
@keyframes sb-prog{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.sb-ft:hover{border-color:#3a3f55}
.sb-ft-k{display:flex;align-items:center;gap:8px;color:#A3A8B8}
.sb-ft>b{font-size:18px;line-height:1.3;font-weight:500;letter-spacing:-.01em}
.sb-ft>div{margin-top:auto}
/* ruler */
.sb-ru{position:relative;height:64px}
.sb-ru-t{position:absolute;left:4px;right:4px;bottom:20px;height:12px;border-bottom:1px solid #3a3f55}
.sb-ru-t i{position:absolute;bottom:0;width:1px;height:6px;background:#3a3f55}
.sb-ru-t i.m{height:12px;background:var(--sb-a1)}
.sb-ru-t small{position:absolute;top:calc(100% + 5px);left:0;transform:translateX(-50%);font-size:10.5px;letter-spacing:0;color:#6E7286}
.sb-ru-t i.m small{color:#FFA77F}
.sb-ru-br{position:absolute;left:calc(4px + var(--a));width:calc(var(--b) - var(--a));bottom:36px;height:12px;border:2px solid var(--sb-a1);border-bottom:0;background:linear-gradient(rgba(255,91,26,.25),transparent)}
.sb-ru em{position:absolute;right:0;top:0;font-style:normal;font-size:11px;color:#6E7286;letter-spacing:.1em;text-transform:uppercase}
.is-play .sb-ru-br{animation:sb-grow 1.2s .2s var(--sb-ease,ease) both}
@keyframes sb-grow{from{width:0}}
.sb-ru-loop{position:absolute;left:0;right:0;bottom:24px;height:2px;background:#3a3f55;overflow:hidden}
.sb-ru-loop i{position:absolute;top:0;width:22%;height:2px;background:var(--sb-a1);left:calc(var(--n,0) * 33%)}
.sb-ru-loop i:nth-child(2){--n:1}.sb-ru-loop i:nth-child(3){--n:2}
.is-play .sb-ru-loop i{animation:sb-run 1.6s linear infinite}
@keyframes sb-run{from{transform:translateX(0)}to{transform:translateX(150%)}}
/* sockets */
.sb-so{display:flex;flex-wrap:wrap;gap:6px}
.sb-so span{display:inline-flex;align-items:center;gap:7px;font-size:13px;line-height:1.2;padding:6px 9px;border:1px solid #2c3146;color:#d9dbe3;background:#0B0C12}
.sb-so i{width:7px;height:7px;border-radius:50%;background:var(--sb-a1);box-shadow:0 0 6px rgba(255,91,26,.7)}
.is-play .sb-so i{animation:sb-lit .5s calc(var(--j) * .3s + .2s) both}
@keyframes sb-lit{from{background:#3a3f55;box-shadow:none}}
.is-play .sb-so span{animation:sb-plug .5s calc(var(--j) * .3s) both}
@keyframes sb-plug{from{transform:translateY(8px);opacity:0}}
/* tray */
.sb-tr{display:flex;flex-direction:column;gap:6px}
.sb-tr span{display:flex;gap:9px;align-items:center;font-size:14.5px;line-height:1.25;color:#E7E8EE}
.sb-tr-base{display:block;height:8px;border:1px solid #3a3f55;border-top:0;margin-top:2px}
.is-play .sb-tr span{animation:sb-drop .55s calc(var(--j) * .25s) var(--sb-ease,ease) both}
@keyframes sb-drop{from{opacity:0;transform:translateY(-16px)}}
/* crosshair */
.sb-xh{display:flex;justify-content:flex-end}
.sb-xh svg{width:92px;height:92px;stroke:#3a3f55;fill:none;stroke-width:1.5}
.sb-xh-dot{fill:var(--sb-a1);stroke:none}
.sb-ft[aria-pressed=true] .sb-xh svg circle:not(.sb-xh-dot){stroke:rgba(255,91,26,.45)}
.is-play .sb-xh-dot{animation:sb-aim 1.4s var(--sb-ease,ease) both}
@keyframes sb-aim{0%{transform:translate(38px,-34px)}55%{transform:translate(-6px,4px)}100%{transform:none}}

/* ── explain: transparency sheets ── */
.sb-ex-g{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,5vw,72px);align-items:center}
.sb-ex-l h3{font-size:clamp(23px,2.1vw,30px);line-height:1.2;letter-spacing:-.025em;font-weight:500;color:var(--sb-fg)}
.sb-ex-hint{color:var(--sb-fg2);margin-top:14px;font-size:15.5px;max-width:30em}
.sb-ex-an{margin-top:28px;padding:18px 20px;border-left:3px solid var(--sb-a1);background:var(--sb-cd)}
.sb-ex-an small{color:var(--sb-at)}.sb-ex-an p{margin-top:6px;font-size:17.5px;line-height:1.5;color:var(--sb-fg)}
.sb-tp{position:relative;background:#0B0C12;border:1px solid #22263A;padding:clamp(22px,3vw,36px);color:#F4F5F8;overflow:hidden}
.sb-tp-lamp{position:absolute;inset:0;background:radial-gradient(ellipse at 55% 45%,rgba(255,167,127,.2),transparent 62%)}
.sb-tp-lamp::after{content:"";position:absolute;inset:0;background-image:var(--sb-pat);background-size:24px;opacity:.12}
.sb-tp-st{display:grid;position:relative;padding-top:34px}
.sb-tp-s{grid-area:1/1;padding:22px 24px 26px;background:rgba(245,242,238,.055);border:1px solid rgba(255,167,127,.38);transition:transform .7s var(--sb-ease),opacity .7s;align-self:end}
.sb-tp-s[data-p=past]{transform:translate(calc(var(--d,1) * -10px),calc(var(--d,1) * -11px));opacity:calc(.5 - var(--d,1) * .1)}
.sb-tp-s[data-p=past] p{opacity:.0}
.sb-tp-s[data-p=next]{transform:translate(70%,8px) rotate(5deg);opacity:0;pointer-events:none}
.sb-tp-s[data-p=cur]{background:rgba(20,22,31,.94)}
.sb-tp-n{display:flex;gap:8px;align-items:center;font-size:12px;letter-spacing:.14em;color:#FFA77F;margin-bottom:12px}
.sb-tp-s p{font-size:clamp(18px,1.55vw,22px);line-height:1.5;letter-spacing:-.01em;transition:opacity .4s}
mark.sb-k{background:none;color:inherit;box-shadow:inset 0 -.38em rgba(255,91,26,.4)}
.sb-tp-dots{display:flex;gap:8px;margin-top:22px;position:relative}
.sb-tp-dots button{all:unset;box-sizing:border-box;cursor:pointer;width:38px;height:38px;border:1px solid #3a3f55;display:grid;place-items:center;font-size:14px;color:#A3A8B8;position:relative;overflow:hidden}
.sb-tp-dots button[aria-pressed=true]{border-color:var(--sb-a1);color:#fff}
.sb-tp-dots button::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:100%;background:var(--sb-a1);transform:scaleX(0);transform-origin:left}
.sb-tp-dots button[aria-pressed=true]::after{transform:scaleX(1)}
.sb-tp.is-run .sb-tp-dots button[aria-pressed=true]::after{animation:sb-prog var(--sb-dur,4.5s) linear both}

/* ── signs: tally ── */
.sb-sg-g{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:clamp(24px,4vw,56px);align-items:start}
.sb-sg-list{display:flex;flex-direction:column;border-top:1px solid var(--sb-ln)}
.sb-sg{all:unset;box-sizing:border-box;cursor:pointer;display:grid;grid-template-columns:38px minmax(0,1fr) 30px;align-items:center;gap:14px;padding:20px 10px;border-bottom:1px solid var(--sb-ln);color:var(--sb-fg);transition:background .35s,padding .35s}
.sb-sg:hover{background:rgba(255,91,26,.05)}
.sb-sg-q{font-size:54px;line-height:.5;height:24px;color:var(--sb-mu);transition:color .35s;font-weight:600}
.sb-sg-t{font-size:clamp(17px,1.5vw,21px);line-height:1.38;letter-spacing:-.01em}
.sb-sg-m{width:30px;height:30px;border:1px solid var(--sb-ln);display:grid;place-items:center}
.sb-sg-m svg{width:16px;height:16px;opacity:0;transform:scale(.3) rotate(-30deg);transition:opacity .35s,transform .45s var(--sb-ease)}
.sb-sg[aria-pressed=true]{background:linear-gradient(90deg,rgba(255,91,26,.1),transparent 70%);padding-left:18px}
.sb-sg[aria-pressed=true] .sb-sg-q{color:var(--sb-a1)}
.sb-sg[aria-pressed=true] .sb-sg-m{border-color:var(--sb-a1)}
.sb-sg[aria-pressed=true] .sb-sg-m svg{opacity:1;transform:none}
.sb-ta{background:#0B0C12;color:#F4F5F8;border:1px solid #22263A;padding:24px;position:sticky;top:90px;overflow:hidden}
.sb-ta::before{content:"";position:absolute;inset:0;background-image:var(--sb-pat);background-size:24px;opacity:.1;pointer-events:none}
.sb-ta>*{position:relative}
.sb-ta-h{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.sb-ta-h small{width:100%;color:#A3A8B8}
.sb-ta-h b{font-size:56px;line-height:1;font-weight:600;letter-spacing:-.04em;color:#fff}
.sb-ta-h span{color:#6E7286}
.sb-ta-svg{width:100%;max-width:210px;height:auto;display:block;margin:14px auto 18px;fill:none;stroke-linecap:round}
.sb-ta-svg .gh path{stroke:#2c3146;stroke-width:1.5;stroke-dasharray:3 5}
.sb-ta-svg .tk path{stroke:#F4F5F8;stroke-width:7;stroke-dasharray:130;stroke-dashoffset:130;transition:stroke-dashoffset .55s var(--sb-ease)}
.sb-ta-svg .tk path:last-child{stroke:var(--sb-a1)}
.sb-ta-svg .tk path.on{stroke-dashoffset:0}
.sb-ta-v p{font-size:16px;line-height:1.45;color:#D9DBE3;min-height:3em}
.sb-ta-clr{all:unset;cursor:pointer;font-size:13.5px;color:#FFA77F;margin-top:8px;padding:8px 0 4px;border-bottom:1px solid rgba(255,167,127,.5);display:inline-block}

/* ── deliverables: honeycomb ── */
.sb-hx-g{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,4vw,64px);align-items:center}
.sb-hx-comb{position:relative;width:100%;max-width:580px;margin-inline:auto}
.sb-hx-ln{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.sb-hx-ln line{stroke:var(--sb-ln);stroke-width:1.5;vector-effect:non-scaling-stroke;stroke-dasharray:4 5}
.sb-hx-ln line.on{stroke:var(--sb-a1);stroke-dasharray:none;animation:sb-dash .8s linear}
@keyframes sb-dash{from{opacity:0}}
.sb-hx{all:unset;box-sizing:border-box;position:absolute;cursor:pointer;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);background:var(--sb-ln);transition:background .4s,transform .45s var(--sb-ease);z-index:1}
.sb-hx::before{content:"";position:absolute;inset:2px;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);background:var(--sb-cd);transition:background .4s}
.sb-hx>span{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;height:100%;padding:0 13%;gap:5px}
.sb-hx small{font-size:11px;color:var(--sb-at);letter-spacing:.12em}
.sb-hx b{font-size:clamp(11.5px,1.05vw,14.5px);line-height:1.22;font-weight:500;color:var(--sb-fg)}
.sb-hx:hover{transform:scale(1.04)}
.sb-hx:focus-visible::before{background:rgba(255,91,26,.18)}
.sb-hx[aria-pressed=true]{background:var(--sb-a1);transform:scale(1.06)}
.sb-hx[aria-pressed=true]::before{background:var(--sb-a1)}
.sb-hx[aria-pressed=true] b,.sb-hx[aria-pressed=true] small{color:var(--sb-on,#fff)}
.sb-hx-c{cursor:default;background:#0B0C12}
.sb-hx-c::before{background:linear-gradient(rgba(11,12,18,.86),rgba(11,12,18,.86)),var(--sb-pat) 0 0/18px 18px,#0B0C12}
.sb-hx-c b{color:#fff;font-weight:600}.sb-hx-c .sb-g{width:24px;height:24px}
.sb-hx-c:hover{transform:none}
.sb-hx-out>div{min-height:190px}
.sb-hx-d span{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--sb-at)}
.sb-hx-d h3{font-size:clamp(24px,2.3vw,32px);line-height:1.15;letter-spacing:-.025em;font-weight:600;margin:10px 0 12px;color:var(--sb-fg)}
.sb-hx-d p{font-size:17.5px;line-height:1.55;color:var(--sb-fg2);max-width:30em}
.sb-hx-d:not([hidden]){animation:sb-in .5s var(--sb-ease)}
@keyframes sb-in{from{opacity:0;transform:translateY(10px)}}
.sb-hx-all{list-style:none;margin:24px 0 0;padding:16px 0 0;border-top:1px solid var(--sb-ln);display:grid;grid-template-columns:1fr 1fr;gap:6px 18px;counter-reset:sbh}
.sb-hx-all li{font-size:14px;color:var(--sb-fg2);counter-increment:sbh;display:flex;gap:8px}
.sb-hx-all li::before{content:counter(sbh,decimal-leading-zero);color:var(--sb-mu);font-size:12px;padding-top:2px}
.sb-hx-all li.on{color:var(--sb-fg)}.sb-hx-all li.on::before{color:var(--sb-a1)}

/* ── how: relay track ── */
.sb-rl{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,4vw,56px);align-items:center}
.sb-rl-trk{position:relative}
.sb-rl-trk svg{width:100%;height:auto;display:block;overflow:visible}
.sb-rl-base{fill:none;stroke:var(--sb-ln);stroke-width:14}
.sb-rl-lane{fill:none;stroke:var(--sb-ln);stroke-width:1.2;stroke-dasharray:5 7}
.sb-rl-sg{fill:none;stroke:var(--sb-mu);stroke-opacity:.45;stroke-width:14;transition:stroke .4s,stroke-opacity .4s;cursor:pointer}
.sb-rl-sg.done{stroke:var(--sb-a2);stroke-opacity:.55}
.sb-rl-sg.on{stroke:var(--sb-a1);stroke-opacity:1}
.sb-rl-marks line{stroke:var(--sb-fg);stroke-width:2}
.sb-rl-marks text{fill:var(--sb-fg2);font-size:13px;font-family:inherit;letter-spacing:.08em}
.sb-rl-marks circle{fill:var(--sb-cd);stroke:var(--sb-fg);stroke-width:1.5}
.sb-rl-bat{fill:#fff;stroke:var(--sb-a1);stroke-width:5;filter:drop-shadow(0 0 8px rgba(255,91,26,.8))}
.sb-rl-in{position:absolute;left:25%;right:25%;top:27%;bottom:27%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:4px;pointer-events:none}
.sb-rl-in small{color:var(--sb-at)}
.sb-rl-in b{font-size:clamp(20px,2.4vw,34px);line-height:1.1;font-weight:600;letter-spacing:-.03em;color:var(--sb-fg)}
.sb-rl-in span{font-size:clamp(13px,1.1vw,16px);color:var(--sb-fg2)}
.sb-rl-list{display:flex;flex-direction:column;gap:2px}
.sb-rl-b{all:unset;box-sizing:border-box;cursor:pointer;display:block;padding:14px 18px;border-left:3px solid var(--sb-ln);transition:border-color .35s,background .35s}
.sb-rl-b:hover{background:rgba(255,91,26,.05)}
.sb-rl-k{display:flex;align-items:center;gap:8px;color:var(--sb-mu)}
.sb-rl-k em{font-style:normal;font-size:13px;margin-left:auto;color:var(--sb-fg2)}
.sb-rl-b b{display:block;font-size:19px;font-weight:500;letter-spacing:-.01em;margin-top:4px;color:var(--sb-fg)}
.sb-rl-b p{display:none;font-size:15.5px;line-height:1.5;color:var(--sb-fg2);margin-top:6px}
.sb-rl-b[aria-pressed=true]{border-color:var(--sb-a1);background:var(--sb-cd)}
.sb-rl-b[aria-pressed=true] p{display:block;animation:sb-in .45s var(--sb-ease)}
.sb-rl-b[aria-pressed=true] .sb-rl-k small{color:var(--sb-at)}

/* ── choice: trivision billboard ── */
.sb-tv-bd{display:flex;gap:0;height:clamp(240px,23vw,300px);perspective:1600px;padding:10px;background:#16181F;border:1px solid #2c3146;box-shadow:inset 0 0 0 4px #0B0C12}
.sb-tv-sl{position:relative;flex:1 1 0;min-width:0}
.sb-tv-p{position:absolute;inset:0;transform-style:preserve-3d;transition:transform 1.1s cubic-bezier(.65,0,.3,1);transition-delay:calc(var(--s) * 75ms);transform:translateZ(calc(var(--sw,60px) * -.2887)) rotateY(calc(var(--k,0) * -120deg))}
.sb-tv-f{position:absolute;inset:0;overflow:hidden;backface-visibility:hidden;-webkit-backface-visibility:hidden;transform:rotateY(calc(var(--f) * 120deg)) translateZ(calc(var(--sw,60px) * .2887))}
.sb-tv-f::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.18),transparent 30%,transparent 75%,rgba(0,0,0,.22));pointer-events:none}
.sb-tv-cl{position:absolute;top:0;bottom:0;left:calc(var(--s) * -100%);width:800%}
.sb-tv-art{position:absolute;inset:0;padding:clamp(20px,3.2vw,44px);display:flex;flex-direction:column;justify-content:center;gap:10px;background:#0B0C12;color:#F4F5F8}
.sb-tv-art::before{content:"";position:absolute;inset:0;background-image:var(--sb-pat);background-size:24px;opacity:.16}
.sb-tv-art>*{position:relative;max-width:40em}
.sb-tv-art small{color:#FFA77F}
.sb-tv-art b{font-size:clamp(24px,3vw,44px);line-height:1.05;font-weight:600;letter-spacing:-.035em}
.sb-tv-art p{font-size:clamp(15px,1.35vw,19px);line-height:1.45;color:#D9DBE3}
.sb-tv-f1 .sb-tv-art{background:var(--sb-a1);color:#0B0C10}
.sb-tv-f1 .sb-tv-art small,.sb-tv-f1 .sb-tv-art p{color:#1d0d05}
.sb-tv-f1 .sb-tv-art::before{opacity:0}
.sb-tv-f2 .sb-tv-art{background:#F5F2EE;color:#0B0C10}
.sb-tv-f2 .sb-tv-art small{color:#C2410C}.sb-tv-f2 .sb-tv-art p{color:#4B4E58}
.sb-tv-q span .sb-g{width:30px;height:30px}
.sb-tv-q small{text-transform:none;letter-spacing:0;font-size:15px}
.sb-tv-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.sb-tv-tabs button{all:unset;box-sizing:border-box;cursor:pointer;display:flex;flex-direction:column;gap:2px;padding:12px 16px;border:1px solid var(--sb-ln);font-size:16px;font-weight:500;color:var(--sb-fg);min-width:180px;position:relative;overflow:hidden}
.sb-tv-tabs button small{color:var(--sb-mu);font-weight:400}
.sb-tv-tabs button[aria-pressed=true]{border-color:var(--sb-a1);background:var(--sb-cd)}
.sb-tv-tabs button[aria-pressed=true] small{color:var(--sb-at)}
.sb-tv-tabs button::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:100%;background:var(--sb-a1);transform:scaleX(0);transform-origin:left}
.sb-tv.is-run .sb-tv-tabs button[aria-pressed=true]::after{animation:sb-prog var(--sb-dur,5s) linear both}
.sb-tv-out{margin-top:22px}
.sb-tv-d{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,3vw,40px)}
.sb-tv-d:not([hidden]){animation:sb-in .5s var(--sb-ease)}
.sb-tv-d>div{border-top:2px solid var(--sb-a1);padding-top:14px}
.sb-tv-d>div+div{border-top-color:var(--sb-mu)}
.sb-tv-d small{color:var(--sb-at)}
.sb-tv-d p{font-size:17.5px;line-height:1.5;margin-top:6px;color:var(--sb-fg)}

/* ── cost: footprint quadrants ── */
.sb-fp{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(24px,4vw,64px);align-items:center}
.sb-fp-pl{position:relative;aspect-ratio:1;width:100%;max-width:500px;margin:0;border:1px solid var(--sb-ln);background-image:linear-gradient(var(--sb-ln) 1px,transparent 1px),linear-gradient(90deg,var(--sb-ln) 1px,transparent 1px);background-size:10% 10%;background-position:-1px -1px}
.sb-fp-q{all:unset;box-sizing:border-box;position:absolute;width:50%;height:50%;cursor:pointer}
.sb-fp-q0{left:0;top:0}.sb-fp-q1{right:0;top:0}.sb-fp-q2{left:0;bottom:0}.sb-fp-q3{right:0;bottom:0}
.sb-fp-r{position:absolute;width:var(--z,42%);height:var(--z,42%);background:rgba(255,91,26,.12);border:1.5px solid var(--sb-a1);transition:width .7s cubic-bezier(.3,1.35,.5,1),height .7s cubic-bezier(.3,1.35,.5,1),background .4s}
.sb-fp-q0 .sb-fp-r{right:0;bottom:0}.sb-fp-q1 .sb-fp-r{left:0;bottom:0}.sb-fp-q2 .sb-fp-r{right:0;top:0}.sb-fp-q3 .sb-fp-r{left:0;top:0}
.sb-fp-q[aria-pressed=true]{--z:94%}
.sb-fp-q[aria-pressed=true] .sb-fp-r{background:rgba(255,91,26,.3)}
.sb-fp-q:hover .sb-fp-r{background:rgba(255,91,26,.22)}
.sb-fp-l{position:absolute;display:flex;flex-direction:column;gap:2px;max-width:70%;padding:6px 8px;background:var(--sb-cd);border:1px solid var(--sb-ln);z-index:1}
.sb-fp-q0 .sb-fp-l{left:8px;top:8px}.sb-fp-q1 .sb-fp-l{right:8px;top:8px;text-align:right}.sb-fp-q2 .sb-fp-l{left:8px;bottom:8px}.sb-fp-q3 .sb-fp-l{right:8px;bottom:8px;text-align:right}
.sb-fp-l small{font-size:11px;color:var(--sb-fg2);line-height:1.3}
.sb-fp-l b{font-size:14px;color:var(--sb-at)}
.sb-fp [data-l]{display:none}
.sb-fp [aria-pressed=true] [data-l]{display:inline}.sb-fp [aria-pressed=true] [data-s]{display:none}
.sb-fp-ax{position:absolute;inset:0;pointer-events:none}
.sb-fp-ax::before,.sb-fp-ax::after{content:"";position:absolute;background:var(--sb-fg);opacity:.5}
.sb-fp-ax::before{left:50%;top:0;bottom:0;width:1px}.sb-fp-ax::after{top:50%;left:0;right:0;height:1px}
.sb-fp-c{position:absolute;left:50%;top:50%;width:40px;height:40px;margin:-20px;border-radius:50%;background:#0B0C12;display:grid;place-items:center;z-index:2;box-shadow:0 0 0 4px var(--sb-cd)}
.sb-fp-c .sb-g{width:18px;height:18px}
.sb-fp-v{max-width:500px;margin:18px 0 0;display:flex;gap:12px;align-items:baseline}
.sb-fp-v small{color:var(--sb-at);flex:none}
.sb-fp-v p{font-size:16px;color:var(--sb-fg)}
.sb-fp-rows{border-top:1px solid var(--sb-ln)}
.sb-fp-row{all:unset;box-sizing:border-box;cursor:pointer;display:block;width:100%;padding:16px 6px;border-bottom:1px solid var(--sb-ln);transition:background .3s}
.sb-fp-row:hover{background:rgba(255,91,26,.05)}
.sb-fp-h{display:flex;align-items:center;gap:10px}
.sb-fp-h b{font-size:18px;font-weight:500;color:var(--sb-fg)}
.sb-fp-h em{margin-left:auto;font-style:normal;font-size:12px;letter-spacing:.1em;text-transform:uppercase;padding:4px 9px;border:1px solid var(--sb-ln);color:var(--sb-fg2)}
.sb-fp-row[aria-pressed=true] .sb-fp-h em{background:var(--sb-a1);border-color:var(--sb-a1);color:var(--sb-on,#fff)}
.sb-fp-t{display:block;font-size:15.5px;line-height:1.5;color:var(--sb-fg2);margin-top:6px;padding-left:24px}

/* ── story: film strip ── */
.sb-fm-t{font-size:clamp(20px,1.9vw,27px);line-height:1.25;letter-spacing:-.02em;font-weight:500;margin-bottom:20px;color:var(--sb-fg);max-width:36em}
.sb-fm-vp{overflow:hidden;background:#0B0C12;padding:30px 0;position:relative;border:1px solid #22263A}
.sb-fm-vp::before,.sb-fm-vp::after{content:"";position:absolute;left:0;right:0;height:9px;background:repeating-linear-gradient(90deg,transparent 0 14px,rgba(245,242,238,.2) 14px 26px)}
.sb-fm-vp::before{top:10px}.sb-fm-vp::after{bottom:10px}
.sb-fm.is-run .sb-fm-vp::before,.sb-fm.is-run .sb-fm-vp::after{animation:sb-film 1.4s linear infinite}
@keyframes sb-film{to{background-position:26px 0}}
.sb-fm-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:0 12px;transition:transform .8s var(--sb-ease)}
.sb-fm-f{all:unset;box-sizing:border-box;cursor:pointer;background:#14161F;border:1px solid #262a3b;padding:20px 22px 24px;color:#F4F5F8;opacity:.62;transition:opacity .45s,border-color .45s,transform .45s var(--sb-ease);display:flex;flex-direction:column;gap:14px}
.sb-fm-f:hover{opacity:.8}
.sb-fm-f[aria-pressed=true]{opacity:1;border-color:var(--sb-a1);transform:translateY(-3px)}
.sb-fm-n{display:flex;gap:8px;align-items:center;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#FFA77F}
.sb-fm-sq{width:100%;height:auto;fill:none;stroke-linecap:round;stroke-linejoin:round;background:#0B0C12;border:1px solid #22263A}
.sb-fm-sq path{stroke:#6E7286;stroke-width:2.2}
.sb-fm-f[aria-pressed=true] .sb-fm-sq path{stroke:var(--sb-a2)}
.sb-fm-f[data-i="2"][aria-pressed=true] .sb-fm-sq path{stroke:var(--sb-a1);stroke-width:3}
.sb-fm-f.is-play .sb-fm-sq path{stroke-dasharray:1;animation:sb-draw 1.6s var(--sb-ease) both}
@keyframes sb-draw{from{stroke-dashoffset:1}to{stroke-dashoffset:0}}
.sb-fm-f p{font-size:16.5px;line-height:1.5;color:#D9DBE3}
.sb-fm-ctl{display:flex;gap:6px;margin-top:4px}
.sb-fm-ctl button{all:unset;box-sizing:border-box;flex:1;padding:12px 0;cursor:pointer}
.sb-fm-ctl button:focus-visible{outline:2px solid var(--sb-a1);outline-offset:2px}
.sb-fm-ctl i{display:block;height:3px;background:var(--sb-ln);position:relative;overflow:hidden}
.sb-fm-ctl i::after{content:"";position:absolute;inset:0;background:var(--sb-a1);transform:scaleX(0);transform-origin:left}
.sb-fm-ctl i.done::after{transform:scaleX(1)}
.sb-fm.is-run .sb-fm-ctl i.on::after{animation:sb-prog var(--sb-dur,5s) linear both}
.sb-fm-ctl i.on::after{transform:scaleX(1)}

/* ── mistakes: fuse board ── */
.sb-fb{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,4vw,56px);align-items:center}
.sb-fb-box{background:linear-gradient(#1A1C25,#101118);border:1px solid #2c3146;padding:18px 20px 22px;color:#F4F5F8;box-shadow:inset 0 0 0 6px #0B0C12,0 30px 60px -30px rgba(0,0,0,.5)}
.sb-fb-hd{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#A3A8B8;padding:4px 4px 12px;border-bottom:1px dashed #2c3146}
.sb-fb-hd span{display:flex;gap:8px;align-items:center}
.sb-fb-hd em{font-style:normal;color:#FFA77F}
.sb-fb-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:16px}
.sb-fz{all:unset;box-sizing:border-box;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:12px;padding:16px 10px;border:1px solid #262a3b;background:#0B0C12;transition:border-color .35s}
.sb-fz:hover{border-color:#3a3f55}
.sb-fz[aria-pressed=true]{border-color:var(--sb-a1)}
.sb-fz-c{display:flex;flex-direction:column;align-items:center;transition:transform .45s var(--sb-ease),opacity .3s}
.sb-fz-c .cap{display:block;width:34px;height:12px;background:linear-gradient(#6b7086,#2c3146);border-radius:2px}
.sb-fz-c .gl{display:block;width:30px;height:88px;border:1px solid #3a3f55;background:rgba(255,255,255,.04);transition:background .4s,box-shadow .4s}
.sb-fz-c svg{display:block;width:100%;height:100%;fill:none;stroke-width:2;stroke-linecap:round}
.sb-fz-c .bad{stroke:#6E7286}.sb-fz-c .ok{stroke:var(--sb-a1);opacity:0}
.sb-fz[data-st=fixed] .bad{opacity:0}.sb-fz[data-st=fixed] .ok{opacity:1}
.sb-fz[data-st=fixed] .gl{background:rgba(255,91,26,.14);box-shadow:0 0 18px rgba(255,91,26,.35)}
.sb-fz.swap .sb-fz-c{transform:translateY(-18px);opacity:.25}
.sb-fz-l{font-size:13.5px;line-height:1.35;text-align:center;color:#D9DBE3}
.sb-fz-l small{display:block;color:#6E7286;font-size:10.5px;margin-bottom:4px}
.sb-fz[data-st=fixed] .sb-fz-l small{color:#FFA77F}
.sb-fb-out>div{display:grid;gap:14px}
.sb-fz-d:not([hidden]){animation:sb-in .45s var(--sb-ease)}
.sb-fz-d>div{padding:14px 18px;border-left:3px solid var(--sb-mu);background:var(--sb-cd)}
.sb-fz-d>div.ok{border-left-color:var(--sb-a1)}
.sb-fz-d small{color:var(--sb-mu)}.sb-fz-d .ok small{color:var(--sb-at)}
.sb-fz-d p{font-size:17.5px;line-height:1.5;margin-top:4px;color:var(--sb-fg)}
.sb-fz-d .bad p{color:var(--sb-fg2)}

/* ── related: connector rail ── */
.sb-rr .xh{margin-bottom:28px}
.sb-rr-g{display:grid;grid-template-columns:minmax(0,320px) 72px minmax(0,1fr);align-items:stretch}
.sb-rr-hub{display:flex;flex-direction:column;gap:6px;padding:24px;border:1px solid var(--sb-a1);background:#0E1018;position:relative;overflow:hidden;transition:background .3s}
.sb-rr-hub::before{content:"";position:absolute;inset:0;background-image:var(--sb-pat);background-size:24px;opacity:.1;-webkit-mask-image:linear-gradient(200deg,#000,transparent 70%);mask-image:linear-gradient(200deg,#000,transparent 70%)}
.sb-rr-hub>*{position:relative}
.sb-rr-hub .sb-g{width:26px;height:26px;margin-bottom:8px}
.sb-rr-hub small{color:#A3A8B8}
.sb-rr-hub b{font-size:26px;letter-spacing:-.03em;font-weight:600;color:#fff}
.sb-rr-hub em{font-style:normal;color:#FFA77F;margin-top:auto;padding-top:14px;font-size:15px}
.sb-rr-hub:hover{background:#151821}
.sb-rr-rail{position:relative}
.sb-rr-rail i{position:absolute;left:0;right:0;top:50%;height:2px;background:#2c3146}
.sb-rr-rail i::after{content:"";position:absolute;top:-4px;left:0;width:10px;height:10px;border-radius:50%;background:var(--sb-a1);box-shadow:0 0 10px var(--sb-a1);animation:sb-rail 2.4s linear infinite}
@keyframes sb-rail{from{left:0}to{left:calc(100% - 10px)}}
.sb-rr-cs{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;position:relative}
.sb-rr-cs::before{content:"";position:absolute;left:-1px;top:24px;bottom:24px;width:2px;background:#2c3146}
.sb-rr-c{display:flex;flex-direction:column;gap:6px;padding:22px 22px 20px;border:1px solid #262a3b;background:#0B0C12;position:relative;transition:border-color .3s,transform .35s var(--sb-ease)}
.sb-rr-c small{color:#6E7286;text-transform:none;letter-spacing:0;font-size:14px}
.sb-rr-c b{font-size:20px;line-height:1.2;font-weight:500;letter-spacing:-.015em;color:#fff}
.sb-rr-c em{font-style:normal;color:#FFA77F;font-size:14.5px;margin-top:auto;padding-top:12px}
.sb-rr-tp{position:absolute;left:-7px;top:24px;width:12px;height:12px;border:2px solid #3a3f55;background:#05060A;transform:rotate(45deg);transition:border-color .3s,background .3s}
.sb-rr-c:hover{border-color:var(--sb-a1);transform:translateY(-3px)}
.sb-rr-c:hover .sb-rr-tp,.sb-rr-c.on .sb-rr-tp{border-color:var(--sb-a1);background:var(--sb-a1)}
.sb-rr-c.on{border-color:rgba(255,91,26,.6)}
.sb-rr-more{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:28px;padding-top:20px;border-top:1px solid #22263A}
.sb-rr-more small{color:#6E7286;margin-right:6px}
.sb-rr-more a{font-size:14.5px;padding:7px 12px;border:1px solid #2c3146;color:#D9DBE3;transition:border-color .3s,color .3s}
.sb-rr-more a:hover{border-color:var(--sb-a1);color:#fff}

/* ── responsive ── */
@media (max-width:1100px){.sb-ft-row{grid-template-columns:repeat(2,minmax(0,1fr))}}
/* laptops 901-1180: keep the three related cards on one row */
@media (min-width:901px) and (max-width:1180px){.sb-rr-g{grid-template-columns:minmax(0,250px) 44px minmax(0,1fr)}.sb-rr-cs{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.sb-rr-c{padding:18px}.sb-rr-c b{font-size:18px}}
@media (max-width:900px){
  .sb-ex-g,.sb-sg-g,.sb-hx-g,.sb-rl,.sb-fp,.sb-fb{grid-template-columns:minmax(0,1fr)}
  .sb-ta{position:relative;top:0}
  .sb-rr-g{grid-template-columns:minmax(0,1fr)}
  .sb-rr-rail{height:40px}.sb-rr-rail i{left:24px;right:auto;top:0;bottom:0;width:2px;height:auto}
  .sb-rr-rail i::after{left:-4px;animation-name:sb-railv}
  .sb-rr-cs::before{display:none}.sb-rr-tp{display:none}
}
@keyframes sb-railv{from{top:0}to{top:calc(100% - 10px)}}
@media (max-width:760px){
  .sb-fm-strip{grid-template-columns:repeat(3,100%);gap:0;padding:0;transform:translateX(calc(var(--i,0) * -100%))}
  .sb-fm-f{margin:0 12px;opacity:1}
  .sb-tv-d{grid-template-columns:minmax(0,1fr)}
  .sb-tv-tabs button{min-width:0;flex:1 1 140px}
}
@media (max-width:600px){
  .sb-ft-row{grid-template-columns:minmax(0,1fr)}
  .sb-ft{min-height:0}
  .sb-xh svg{width:68px;height:68px}
  .sb-sg{grid-template-columns:26px minmax(0,1fr) 26px;gap:10px;padding:16px 4px}
  .sb-sg-q{font-size:40px}
  .sb-hx-all{grid-template-columns:minmax(0,1fr)}
  .sb-fb-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sb-fb-box{padding:14px}
  .sb-tv-bd{height:280px;padding:6px}
  .sb-tv-art{padding:16px 18px}
  .sb-tv-art b{font-size:22px}.sb-tv-art p{font-size:14px}
  .sb-tv-tabs{flex-direction:column;gap:6px}.sb-tv-tabs button{flex:none;width:100%;padding:10px 14px}
  .sb-rl-in{left:22%;right:22%}
  .sb-rl-in span{display:none}
  .sb-rl-marks text{font-size:24px}
  .sb-fp-l{max-width:88%;padding:4px 6px}.sb-fp-l small{font-size:11px;letter-spacing:.04em}.sb-fp-l b{font-size:12.5px}
  .sb-ta{padding:20px}.sb-ta-svg{max-width:150px;margin:10px auto 12px}.sb-ta-h b{font-size:48px}
  .sb-rr-more small{width:100%;margin:0 0 2px}
  .sb-ph{min-height:0}
}
@media (prefers-reduced-motion:reduce){
  .sb-sec *,.sb-facts *,.sb-ph *{animation:none!important;transition:none!important}
}
.sb-ft>.sb-tr,.sb-ft>.sb-so{margin-top:4px}.sb-ft>.sb-tr{flex:1;display:flex;flex-direction:column;justify-content:flex-start}

/* ── QA (QS1): hero beam runs in the gap between text and banner on laptop ── */
@media (min-width:901px){.pg-hero .pg-hero-in{column-gap:clamp(116px,9.6vw,140px)}}
/* phone text +3px: the hero banner grows with its bigger text instead of cutting off its last rows */
@media (max-width:600px){.sb-ban{max-height:none}.sb-ban .sbb{max-height:none!important}}
@media (max-width:600px){.sb-hx>span{padding:0 7%;gap:3px}.sb-hx b{-webkit-hyphens:auto;hyphens:auto;overflow-wrap:break-word}}
@media (max-width:600px){.sb-ft{min-height:0!important}.sb-ft-0 .sb-xh{position:absolute;right:14px;top:14px;margin:0}.sb-ft-0 .sb-xh svg{width:44px;height:44px}.sb-ft-0>b{padding-right:52px}}