/* 678bt.info — Driver 678BT: portable-speaker spec guide. Oat knit, graphite housing, pairing-LED blue, terracotta rubber. */
:root{
  --oat:#ECE6DA;--paper:#F8F4EC;--sand:#E2DACB;--line:#CEC4B1;--ink:#17181A;--text:#27282B;--muted:#5A554C;
  --gr:#232528;--gr2:#2D3034;--gr3:#3A3E44;--on-gr:#F2EDE3;--on-gr-m:#BAB2A4;
  --blue:#2448E8;--blue-d:#1833B0;--blue-l:#8CA8FF;--rubber:#C24E2D;--rubber-l:#DB6C4B;--cone:#B8925F;
  --f-disp:"Syncopate","Red Hat Display",sans-serif;
  --f-body:"Red Hat Display","Noto Sans Myanmar",system-ui,sans-serif;
  --font-body:var(--f-body);--font-head:var(--f-body);
  --primary:var(--blue);--accent:#E9C27A;--surface:var(--gr2);--surface-2:var(--gr);--text-c:var(--on-gr);
  --knit:radial-gradient(rgba(242,237,227,.13) 1px,transparent 1.5px) 0 0/7px 7px,radial-gradient(rgba(0,0,0,.4) 1px,transparent 1.5px) 3.5px 3.5px/7px 7px;
  --r:22px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:96px}
body{margin:0;background:var(--oat);color:var(--text);font:400 17px/1.65 var(--f-body);text-rendering:optimizeLegibility;overflow-x:hidden}
body:lang(my){line-height:1.85}
img,svg{max-width:100%}
a{color:var(--blue)}
a:hover{color:var(--blue-d)}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
.site-header :focus-visible,.housing :focus-visible,.site-footer :focus-visible,.cta :focus-visible,.mini :focus-visible{outline-color:var(--blue-l)}
.wrap{width:min(1240px,100% - 32px);margin-inline:auto}
.w{display:inline-block;max-width:100%;overflow-wrap:anywhere}
.skip{position:absolute;left:12px;top:-120px;z-index:100;background:var(--ink);color:#fff;padding:12px 18px;border-radius:12px;font-weight:700;text-decoration:none}
.skip:focus{top:12px;color:#fff}
.led{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--blue-l);box-shadow:0 0 0 3px rgba(140,168,255,.18),0 0 12px rgba(140,168,255,.8);flex:none}

/* ---------- header: rubber control strip ---------- */
.site-header{position:sticky;top:0;z-index:50;padding:10px 0 0}
.strip{position:relative;display:flex;align-items:center;gap:10px;background:var(--gr);color:var(--on-gr);border-radius:999px;padding:6px 6px 6px 18px;min-height:60px;box-shadow:0 14px 30px -18px rgba(23,24,26,.7),inset 0 1px 0 rgba(255,255,255,.07)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--on-gr);text-decoration:none;min-height:44px;flex:none;order:1}
.brand:hover{color:#fff}
.model{font:700 17px/1 var(--f-disp);letter-spacing:.06em;text-transform:uppercase}
.brand .tag{font-size:13px;font-weight:600;color:var(--on-gr-m);padding-left:10px;border-left:1px solid var(--gr3);line-height:1.3}
.keys{order:2;display:flex;align-items:center;gap:2px;flex:1;justify-content:center;flex-wrap:wrap}
.keys a{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:8px 12px;border-radius:999px;color:var(--on-gr);text-decoration:none;font-size:15px;font-weight:600;line-height:1.3}
.keys a:hover{background:var(--gr3);color:#fff}
.keys a[aria-current]{background:rgba(140,168,255,.14);color:#fff}
.keys a[aria-current]::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue-l);box-shadow:0 0 8px var(--blue-l)}
.keys .k-play{display:none}
.tools{order:3;display:flex;align-items:center;gap:8px;flex:none}
.lsw{display:inline-flex;padding:3px;border-radius:999px;background:#17181A;border:1px solid var(--gr3);gap:2px}
.lsw a{display:inline-flex;align-items:center;justify-content:center;min-height:40px;min-width:44px;padding:0 12px;border-radius:999px;color:var(--on-gr-m);text-decoration:none;font-size:14px;font-weight:700;line-height:1.2}
.lsw a:hover{color:#fff}
.lsw a[aria-current]{background:var(--oat);color:var(--ink)}
.lsw .lc{display:none}
.play-key{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 20px 0 16px;border-radius:999px;background:var(--blue);color:#fff;text-decoration:none;font-weight:700;font-size:15px;line-height:1.2;box-shadow:inset 0 -3px 0 var(--blue-d)}
.play-key:hover{color:#fff;background:#2F55F5}
.play-key .led{background:#fff;box-shadow:0 0 10px #fff}
.nav-toggle{display:none;order:4;align-items:center;gap:8px;min-height:48px;min-width:48px;padding:0 16px 0 7px;border:0;border-radius:999px;background:var(--gr3);color:var(--on-gr);font:700 15px/1.2 var(--f-body);cursor:pointer}
.pw{position:relative;width:34px;height:34px;border-radius:50%;background:#17181A;flex:none;transition:background .2s}
.pw::before{content:"";position:absolute;inset:9px;border:2.5px solid currentColor;border-top-color:transparent;border-radius:50%}
.pw::after{content:"";position:absolute;left:15.75px;top:7px;width:2.5px;height:10px;background:currentColor;border-radius:2px}
.nav-toggle[aria-expanded="true"] .pw{background:var(--blue);color:#fff}
@media (max-width:1219px){.play-key{display:none}.lsw .lf{display:none}.lsw .lc{display:inline}}
@media (max-width:979px){
  .strip{padding-left:16px}
  .nav-toggle{display:inline-flex}
  .tools{margin-left:auto}
  .keys{position:absolute;left:0;right:0;top:calc(100% + 8px);display:none;flex-direction:column;align-items:stretch;gap:4px;padding:10px;background:var(--gr);border-radius:26px;box-shadow:0 24px 40px -20px rgba(23,24,26,.8)}
  .nav-open .keys{display:flex}
  .keys a{justify-content:flex-start;min-height:52px;padding:10px 16px;border-radius:16px;font-size:16px}
  .keys .k-play{display:flex;background:var(--blue);color:#fff;margin-top:6px;justify-content:center}
}
@media (max-width:420px){.brand .tag,.nav-toggle .nt{display:none}.nav-toggle{padding:0 7px}.strip{gap:6px;padding-left:14px}}
@media (max-width:340px){.model{font-size:15px}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:12px 24px;border-radius:999px;font-weight:700;font-size:16px;line-height:1.3;text-decoration:none;text-align:center;transition:background .15s,color .15s,border-color .15s}
.btn-blue{background:var(--blue);color:#fff;box-shadow:inset 0 -3px 0 var(--blue-d)}
.btn-blue:hover{background:#2F55F5;color:#fff}
.btn-line{border:2px solid var(--ink);color:var(--ink)}
.btn-line:hover{background:var(--ink);color:var(--oat)}
.btn-line-d{border:2px solid rgba(242,237,227,.35);color:var(--on-gr)}
.btn-line-d:hover{border-color:var(--on-gr);color:#fff}
.btn-sm{min-height:46px;padding:10px 18px;font-size:15px}

/* ---------- home hero ---------- */
.hero{padding:clamp(36px,6vw,84px) 0 clamp(28px,4vw,48px)}
.hero-grid{display:grid;gap:clamp(32px,5vw,64px);align-items:center}
@media (min-width:900px){.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}}
.eyebrow{display:inline-flex;align-items:center;gap:10px;margin:0 0 20px;padding:8px 16px 8px 12px;border-radius:999px;background:var(--gr);color:var(--on-gr);font-size:14px;font-weight:600;line-height:1.4}
h1,h2,h3{color:var(--ink);font-family:var(--f-body)}
h1{margin:0 0 20px;font-weight:900;font-size:clamp(2.15rem,1.2rem + 3.4vw,4.1rem);line-height:1.06;letter-spacing:-.02em;text-wrap:balance}
h1:lang(my){font-weight:800;font-size:clamp(1.65rem,1.15rem + 2vw,2.7rem);line-height:1.7;letter-spacing:0}
.lead{font-size:1.12rem;color:var(--text);max-width:62ch}
.lead p{margin:0 0 12px}
.acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* the speaker itself (decoration) */
.device{position:relative;width:100%;max-width:560px;aspect-ratio:2.15/1;margin:20px auto 18px;background:linear-gradient(180deg,#34373C,#1F2124 70%);border-radius:999px;box-shadow:inset 0 2px 0 rgba(255,255,255,.1),inset 0 -8px 18px rgba(0,0,0,.45),0 36px 40px -26px rgba(23,24,26,.55)}
.device::after{content:"";position:absolute;left:12%;right:12%;bottom:-26px;height:18px;border-radius:50%;background:rgba(23,24,26,.22);filter:blur(8px);z-index:-1}
.device .grille{position:absolute;inset:9% 15%;border-radius:18px;background:var(--knit),#2A2D31;box-shadow:inset 0 0 0 1px rgba(255,255,255,.05),inset 0 -24px 40px rgba(0,0,0,.35),inset 0 10px 20px rgba(255,255,255,.04);display:flex;align-items:center;justify-content:space-around;overflow:hidden}
.device .drv{width:40%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(242,237,227,.08) 0 16%,transparent 17% 40%,rgba(242,237,227,.06) 41% 43%,transparent 44% 70%,rgba(242,237,227,.07) 71% 73%,transparent 74%);box-shadow:inset 0 0 30px rgba(0,0,0,.35)}
.device .logo{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--rubber);color:#fff;font:700 clamp(11px,1.7vw,16px)/1 var(--f-disp);letter-spacing:.1em;text-transform:uppercase;padding:8px 12px;border-radius:7px;box-shadow:inset 0 -2px 0 rgba(0,0,0,.25)}
.device .cap{position:absolute;top:14%;bottom:14%;width:9%;border-radius:50%;background:radial-gradient(ellipse,var(--rubber-l) 0 28%,#A63F22 29% 33%,var(--rubber) 34% 100%);box-shadow:inset 0 -6px 10px rgba(0,0,0,.25)}
.device .cap-l{left:3%}.device .cap-r{right:3%}
.device .btns{position:absolute;top:-9px;left:50%;transform:translateX(-50%);display:flex;gap:10px}
.device .btns i{width:30px;height:12px;border-radius:6px;background:#2A2D31;box-shadow:inset 0 2px 0 rgba(255,255,255,.1),0 2px 0 #121315}
.device .btns .bt{background:var(--blue);box-shadow:0 0 14px rgba(140,168,255,.9),inset 0 2px 0 rgba(255,255,255,.3)}
.device .strap{position:absolute;right:-18px;top:34%;width:34px;height:32%;border:7px solid var(--rubber);border-left:0;border-radius:0 18px 18px 0}
@media (max-width:599px){.device{width:calc(100% - 22px);max-width:330px;margin:14px 0 18px}}

/* ---------- game housing ---------- */
.unit{padding:12px 0 clamp(40px,6vw,72px)}
.housing{container-type:inline-size;position:relative;background:var(--gr);color:var(--on-gr);border-radius:36px;padding:clamp(10px,2.4vw,28px);box-shadow:0 34px 60px -34px rgba(23,24,26,.75),inset 0 1px 0 rgba(255,255,255,.07)}
.h-top{display:flex;align-items:center;gap:12px;padding:6px 10px 14px;margin-bottom:14px;border-bottom:1px dashed rgba(242,237,227,.16)}
.h-led{width:12px;height:12px;border-radius:50%;background:var(--blue-l);box-shadow:0 0 14px var(--blue-l);flex:none}
.h-name{margin:0;font-weight:800;font-size:1.1rem;color:#fff;line-height:1.4}
.h-model{margin-left:auto;font:700 12px/1 var(--f-disp);letter-spacing:.14em;text-transform:uppercase;color:var(--on-gr-m)}
.h-body{display:grid;gap:18px;grid-template-columns:minmax(0,1fr)}
@container (min-width:780px){.h-body{grid-template-columns:minmax(0,1.4fr) minmax(250px,.6fr);gap:26px}.h-side{padding:14px 8px 8px}}
.h-game{border-radius:26px;background:var(--knit),#1C1E21;padding:6px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.05)}
.h-side{display:flex;flex-direction:column;gap:14px;padding:4px 10px 12px}
.h-card-t{margin:0;font-size:1.35rem;font-weight:800;color:#fff;line-height:1.35}
.h-card-p{margin:0;color:var(--on-gr-m)}
.specs{list-style:none;margin:4px 0;padding:0;border-top:1px solid rgba(242,237,227,.12)}
.specs li{display:flex;align-items:center;gap:12px;padding:12px 2px;border-bottom:1px solid rgba(242,237,227,.12);font-weight:600;line-height:1.4}
.specs li::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--rubber);flex:none}
.specs li:first-child::before{background:var(--blue-l);box-shadow:0 0 10px var(--blue-l)}
.h-side .btn{align-self:flex-start}
.feet::before,.feet::after{content:"";position:absolute;bottom:-9px;width:84px;height:12px;border-radius:0 0 10px 10px;background:var(--rubber)}
.feet::before{left:10%}.feet::after{right:10%}
@media (max-width:559px){.unit .wrap{width:100%}.housing{border-radius:28px}}

/* ---------- inner page head ---------- */
.phead{padding:clamp(24px,4vw,48px) 0 8px}
.crumbs ol{list-style:none;margin:0 0 22px;padding:0;display:flex;flex-wrap:wrap;align-items:center;gap:4px 0;font-size:15px}
.crumbs li{display:inline-flex;align-items:center}
.crumbs li+li::before{content:"";width:18px;height:2px;margin:0 10px;background:var(--line)}
.crumbs a{color:var(--muted);display:inline-flex;align-items:center;min-height:44px;font-weight:600}
.crumbs a:hover{color:var(--blue)}
.crumbs [aria-current]{color:var(--ink);font-weight:700}
.phead-grid{display:grid;gap:28px;align-items:end}
@media (min-width:900px){.phead-grid{grid-template-columns:minmax(0,1fr) 300px}}
.plate{position:relative;display:grid;gap:8px;padding:28px 26px 24px;border-radius:20px;background:linear-gradient(160deg,#2F3236,#1E2023);color:var(--on-gr);box-shadow:0 24px 40px -26px rgba(23,24,26,.7)}
.plate .scr,.rear .scr{position:absolute;width:13px;height:13px;border-radius:50%;background:linear-gradient(45deg,transparent 44%,rgba(0,0,0,.55) 45% 55%,transparent 56%),radial-gradient(circle at 35% 35%,#8E918F,#4A4D51)}
.plate .scr:nth-child(1),.rear .scr:nth-child(1){left:10px;top:10px}
.plate .scr:nth-child(2),.rear .scr:nth-child(2){right:10px;top:10px}
.plate .scr:nth-child(3),.rear .scr:nth-child(3){left:10px;bottom:10px}
.plate .scr:nth-child(4),.rear .scr:nth-child(4){right:10px;bottom:10px}
.pl-model{font:700 26px/1 var(--f-disp);letter-spacing:.08em;text-transform:uppercase;color:#fff}
.pl-tag{font-size:15px;font-weight:600;color:var(--on-gr-m);line-height:1.5}
.posts{display:flex;gap:14px;margin-top:8px}
.posts i{width:34px;height:34px;border-radius:50%;box-shadow:inset 0 -4px 0 rgba(0,0,0,.3),0 3px 0 #111}
.posts .pos{background:radial-gradient(circle,#D8D2C6 0 20%,var(--rubber) 22%)}
.posts .neg{background:radial-gradient(circle,#D8D2C6 0 20%,#111214 22%)}
@media (max-width:599px){.plate{display:none}.curve{height:56px;margin-top:18px}}
@media (max-width:899px){.plate{grid-template-columns:auto 1fr;align-items:center;padding:20px 26px}.posts{grid-row:span 2;margin:0;order:-1}}
.curve{display:block;width:100%;height:72px;margin-top:28px}
.curve .cg path{stroke:var(--line);stroke-width:1;fill:none;vector-effect:non-scaling-stroke}
.curve .cv{stroke:var(--blue);stroke-width:3;fill:none;vector-effect:non-scaling-stroke;stroke-linecap:round}

/* ---------- spec sheet ---------- */
.sheet{padding:clamp(28px,4vw,48px) 0 clamp(48px,6vw,84px)}
.sheet-grid{display:grid;gap:36px;grid-template-columns:minmax(0,1fr)}
@media (min-width:980px){.sheet-grid{grid-template-columns:290px minmax(0,1fr);gap:56px}.side{position:sticky;top:92px;align-self:start;max-height:calc(100vh - 110px);overflow:auto;scrollbar-width:thin}}
.side{display:flex;flex-direction:column;gap:18px}
.toc{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px 12px 12px}
.side-t{margin:0 0 6px 10px;font-size:14px;font-weight:700;color:var(--muted)}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:t}
.toc li{counter-increment:t}
.toc a{display:grid;grid-template-columns:2.3em minmax(0,1fr);align-items:baseline;min-height:44px;padding:9px 10px;border-radius:12px;color:var(--text);text-decoration:none;font-size:16px;line-height:1.45}
.toc a::before{content:counter(t,decimal-leading-zero);font-weight:800;font-size:13px;color:var(--blue);font-variant-numeric:tabular-nums}
.toc:lang(my) a::before{content:counter(t,myanmar)}
.toc a:hover{background:var(--sand)}
.toc a[aria-current]{background:var(--gr);color:#fff}
.toc a[aria-current]::before{color:var(--blue-l)}
.mini{position:relative;background:var(--gr);color:var(--on-gr-m);border-radius:var(--r);padding:22px 20px 20px;display:flex;flex-direction:column;gap:8px}
.mini p{margin:0}
.mini-t{color:#fff;font-weight:800;font-size:1.1rem}
.mini-drv{width:54px;height:54px;border-radius:50%;background:radial-gradient(circle,var(--blue-l) 0 12%,#1B1D20 14% 30%,#3A3E44 32% 34%,#26292D 36% 62%,#3A3E44 64% 66%,#1B1D20 68%);box-shadow:0 0 0 4px #17181A}
.mini .btn{margin-top:8px}

.prose{min-width:0;max-width:780px;counter-reset:sec}
.prose>:first-child{margin-top:0}
.prose p,.prose li{max-width:70ch}
.prose p{margin:0 0 16px}
.intro-rest{margin-bottom:8px}
.sec{margin-top:clamp(40px,5vw,60px);counter-increment:sec}
.sec-plain{counter-increment:none}
.prose h2{margin:0 0 20px;padding-bottom:14px;font-weight:800;font-size:clamp(1.45rem,1.1rem + 1.3vw,2.05rem);line-height:1.18;letter-spacing:-.02em;background:linear-gradient(90deg,var(--ink) 0 56px,var(--line) 56px) left bottom/100% 2px no-repeat;text-wrap:balance}
.prose h2:lang(my){font-size:clamp(1.3rem,1.05rem + .9vw,1.7rem);line-height:1.7;letter-spacing:0}
.sec>h2::before{content:counter(sec,decimal-leading-zero);display:inline-block;vertical-align:.3em;margin-right:14px;padding:7px 10px 6px;border-radius:8px;background:var(--gr);color:var(--blue-l);font:700 12px/1 var(--f-disp);letter-spacing:.08em}
.sec>h2:lang(my)::before{content:counter(sec,myanmar);font:700 14px/1 var(--f-body);letter-spacing:0;padding:6px 10px}
.prose h3{margin:28px 0 10px;font-size:1.2rem;font-weight:800;line-height:1.4}
.prose strong{color:var(--ink)}
.prose ul,.prose ol{margin:0 0 20px;padding:0;list-style:none}
.prose ul li{position:relative;padding-left:26px;margin:0 0 10px}
.prose ul li::before{content:"";position:absolute;left:3px;top:.62em;width:9px;height:9px;border-radius:3px;background:var(--rubber)}
.prose ol{counter-reset:li}
.prose ol li{position:relative;counter-increment:li;padding-left:46px;margin:0 0 14px;min-height:32px}
.prose ol li::before{content:counter(li);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,var(--gr) 0 52%,var(--gr3) 54% 60%,var(--gr) 62%);color:#fff;font:800 14px/1 var(--f-body)}
.prose ol li:lang(my)::before{content:counter(li,myanmar)}
.prose li:lang(my)::before{top:.1em}
.prose ul li:lang(my)::before{top:.75em}
.table-wrap{overflow-x:auto;margin:0 0 22px;border-radius:16px;border:1px solid var(--line);background:var(--paper)}
.table-wrap table{border-collapse:collapse;width:100%;min-width:480px;font-size:16px}
.table-wrap th{background:var(--gr);color:#fff;text-align:left;font-weight:700;padding:12px 14px}
.table-wrap td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
.table-wrap tr:nth-child(even) td{background:rgba(226,218,203,.45)}

/* FAQ: volume knobs */
.faq{margin-top:clamp(48px,6vw,72px)}
.faq-list{border-top:2px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:56px;padding:16px 4px;cursor:pointer;list-style:none;font-weight:700;color:var(--ink);line-height:1.45}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover .q{color:var(--blue)}
.knob{position:relative;flex:none;width:36px;height:36px;border-radius:50%;background:repeating-conic-gradient(from 0deg,#2E3135 0 6deg,#1D1F22 6deg 12deg);box-shadow:0 0 0 3px var(--sand),0 3px 6px rgba(0,0,0,.25)}
.knob::after{content:"";position:absolute;left:50%;top:5px;width:3px;height:11px;margin-left:-1.5px;border-radius:2px;background:#fff;transform-origin:50% 13px;transform:rotate(-135deg)}
.faq details[open] .knob::after{transform:rotate(135deg);background:var(--blue-l)}
.faq .a{padding:0 4px 18px}
.faq .a p{margin:0 0 10px}

/* CTA */
.cta{margin-top:clamp(48px,6vw,64px);display:grid;grid-template-columns:minmax(0,1fr);gap:18px;align-items:center;background:var(--gr);color:var(--on-gr);border-radius:28px;padding:22px}
.cta .grille{display:block;height:64px;border-radius:18px;background:var(--knit),#2A2D31}
.cta p{margin:0 0 14px;font-weight:700;font-size:1.12rem;color:#fff;max-width:none}
@media (min-width:640px){.cta{grid-template-columns:120px minmax(0,1fr)}.cta .grille{height:120px;border-radius:50%;background:radial-gradient(circle,transparent 0 60%,rgba(0,0,0,.35) 61% 64%,transparent 65%),var(--knit),#2A2D31}}

/* ---------- related: patch list ---------- */
.bay{padding:clamp(40px,5vw,64px) 0;background:var(--sand);border-top:1px solid var(--line)}
.bay h2{margin:0 0 22px;font-weight:800;font-size:clamp(1.45rem,1.1rem + 1.2vw,2rem);letter-spacing:-.02em;line-height:1.25}
.bay h2:lang(my){letter-spacing:0;line-height:1.7}
.bay-grid{list-style:none;margin:0;padding:0 18px;display:grid;grid-template-columns:minmax(0,1fr);column-gap:32px;background:var(--paper);border-radius:26px;border:1px solid var(--line)}
@media (min-width:820px){.bay-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.bay-grid li{position:relative}
.bay-grid li::before{content:"";position:absolute;left:15px;top:0;bottom:0;width:4px;background:var(--gr);border-radius:2px}
.patch{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr);column-gap:18px;padding:20px 4px 20px 0;color:var(--text);text-decoration:none;border-bottom:1px dashed var(--line);min-height:44px}
.bay-grid li:last-child .patch{border-bottom:0}
@media (min-width:820px){.bay-grid li:nth-last-child(2):nth-child(odd) .patch{border-bottom:0}}
.jack{grid-row:span 2;position:relative;z-index:1;width:34px;height:34px;border-radius:50%;background:radial-gradient(circle,#0E0F10 0 26%,#9C9990 28% 40%,#2B2D31 42%);box-shadow:0 0 0 4px var(--paper)}
.patch strong{color:var(--ink);font-size:1.1rem;line-height:1.4}
.patch .pd{color:var(--muted);font-size:16px;line-height:1.55}
.patch:hover strong{color:var(--blue)}
.patch:hover .jack{background:radial-gradient(circle,#0E0F10 0 26%,var(--blue-l) 28% 40%,#2B2D31 42%)}

/* ---------- footer: rear panel ---------- */
.site-footer{padding:28px 0 28px}
.rear{position:relative;background:var(--gr);color:var(--on-gr-m);border-radius:32px;padding:clamp(32px,4vw,52px) clamp(22px,4vw,52px) 26px}
.f-grid{display:grid;gap:30px}
@media (min-width:820px){.f-grid{grid-template-columns:1.5fr 1fr 1fr;gap:44px}}
.f-brand .brand{margin-bottom:10px}
.f-brand p{margin:0;font-size:16px;max-width:52ch}
.f-h{margin:0 0 6px;color:#fff;font-weight:800;font-size:15px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li a{display:flex;align-items:center;min-height:44px;color:var(--on-gr);text-decoration:none;font-size:16px;line-height:1.4}
.site-footer li a:hover{color:var(--blue-l)}
.f-bottom{display:flex;flex-wrap:wrap;align-items:center;gap:14px 18px;margin-top:30px;padding-top:20px;border-top:1px dashed rgba(242,237,227,.18)}
.age{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--rubber);color:#fff;font:700 13px/1 var(--f-disp);box-shadow:inset 0 -3px 0 rgba(0,0,0,.25)}
.f-copy{font-size:15px}
.f-bottom .lsw{margin-left:auto}
.f-bottom .lsw .lf{display:inline}.f-bottom .lsw .lc{display:none}
.f-bottom .lsw a{min-height:44px}

/* 404 */
.nf{padding:72px 0 80px;text-align:left;max-width:640px}
.nf-drv{width:120px;height:120px;border-radius:50%;margin-bottom:28px;background:radial-gradient(circle,var(--rubber) 0 12%,#1B1D20 14% 30%,#3A3E44 32% 34%,#26292D 36% 62%,#3A3E44 64% 66%,#1B1D20 68%);box-shadow:0 0 0 8px var(--gr)}
.nf-disc{margin:16px 0 0;font-size:15px}

/* ---------- motion (never hides content) ---------- */
@media (prefers-reduced-motion:no-preference){
  .led,.h-led,.device .btns .bt{animation:pair 2.4s ease-in-out infinite}
  .device .drv{animation:thump 1.1s cubic-bezier(.3,0,.3,1) infinite alternate}
  .device .drv+.drv{animation-delay:.18s}
  .knob::after{transition:transform .35s cubic-bezier(.3,1.4,.5,1),background .2s}
  .patch .jack,.toc a,.keys a{transition:background .15s,color .15s}
  .curve .cv{stroke-dasharray:2400;animation:trace 1.6s ease-out both}
}
@keyframes pair{0%,100%{opacity:1}50%{opacity:.45}}
@keyframes thump{from{transform:scale(1)}to{transform:scale(1.035)}}
@keyframes trace{from{stroke-dashoffset:2400}to{stroke-dashoffset:0}}
@media print{.site-header,.side,.bay,.cta{display:none}}