/* speakercleanertools.com — shared styles
   Layout: tool console is the hero; article column ~68ch below; simple top bar + footer */
:root{
  --bg:#EAF1F2; --panel:#F8FBFB; --fg:#0D1F25; --muted:#53686F; --line:#CAD9DC;
  --water:#0A7597; --dust:#9A650C; --vib:#6E43B5; --test:#25784B; --accent:var(--water);
  --grille:#11262D; --grille-dot:#2A4650;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --body:"IBM Plex Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0A1519; --panel:#122329; --fg:#E3EEF0; --muted:#94AAB1; --line:#23383F;
  --water:#3BB6DB; --dust:#E2A93E; --vib:#A985E8; --test:#56C28A;
  --grille:#06100F; --grille-dot:#1D343B; color-scheme:dark}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--body);font-size:17px;line-height:1.65}
img{max-width:100%;height:auto}
a{color:var(--accent)}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.gutter{padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}

/* top bar */
.topbar{border-bottom:1px solid var(--line);background:var(--panel)}
.topbar .in{max-width:1000px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg);font:800 1.05rem var(--display)}
.brand svg{width:28px;height:28px;flex:none}
.topbar nav{display:flex;gap:16px;flex-wrap:wrap}
.topbar nav a{color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:500}
.topbar nav a:hover{color:var(--fg)}

main{padding-block:28px 56px}
.page{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:36px}
.hero{text-align:center;display:flex;flex-direction:column;gap:8px}
h1{font-family:var(--display);font-weight:800;font-size:clamp(1.9rem,5.5vw,2.9rem);line-height:1.08;margin:0;letter-spacing:-.02em;text-wrap:balance}
.lede{margin:0 auto;color:var(--muted);max-width:56ch}

/* tool console */
.console{background:var(--panel);border:1px solid var(--line);border-radius:28px;padding:22px clamp(14px,4vw,32px) 26px;display:flex;flex-direction:column;align-items:center;gap:22px}
.modes{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;width:100%;background:var(--bg);padding:5px;border-radius:14px}
.modes button{font:600 .86rem var(--body);border:0;background:transparent;color:var(--muted);padding:10px 4px;border-radius:10px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:2px;line-height:1.2}
.modes button small{font:500 .7rem var(--mono);opacity:.85}
.modes button[aria-pressed="true"]{background:var(--panel);color:var(--accent);box-shadow:0 1px 3px rgb(0 0 0/.12)}
.stage{position:relative;width:min(300px,76vw);aspect-ratio:1;max-width:100%}
.ring{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:6}
.ring .track{stroke:var(--line)}
.ring .bar{stroke:var(--accent);stroke-linecap:round;transition:stroke .3s}
.go{position:absolute;inset:16px;border-radius:50%;border:0;cursor:pointer;background-color:var(--grille);
  background-image:radial-gradient(circle,var(--grille-dot) 2.2px,transparent 2.6px);background-size:12px 12px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  box-shadow:inset 0 0 0 6px rgb(255 255 255/.04),inset 0 -14px 30px rgb(0 0 0/.45);transition:transform .15s}
.go:active{transform:scale(.98)}
.go .cone{width:42%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 50% 45%,var(--accent) 0 18%,transparent 19%),radial-gradient(circle,rgb(255 255 255/.08) 0 60%,transparent 61%)}
.playing .go .cone{animation:thump .14s infinite alternate}
@keyframes thump{to{transform:scale(1.06)}}
@media (prefers-reduced-motion:reduce){.playing .go .cone{animation:none}}
.go .label{font:800 1.05rem var(--display);letter-spacing:.02em;color:#F2FAFB}
.go .sub{font:500 .74rem var(--mono);color:#9FC3CC;letter-spacing:.06em;text-transform:uppercase}
.readout{display:grid;grid-template-columns:repeat(3,1fr);width:100%;border-top:1px solid var(--line);padding-top:16px;gap:8px;text-align:center}
.readout div{display:flex;flex-direction:column;gap:2px;min-width:0}
.readout span{font:600 .7rem var(--body);color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.readout b{font:600 1.15rem var(--mono);font-variant-numeric:tabular-nums}
#scope{width:100%;height:64px;display:block}
.hint{font-size:.92rem;color:var(--muted);text-align:center;margin:0;max-width:52ch}
.side{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.side button{font:600 .9rem var(--body);padding:10px 18px;border-radius:999px;border:1.5px solid var(--accent);background:transparent;color:var(--accent);cursor:pointer}
.side button.on{background:var(--accent);color:var(--panel)}

/* article */
article{display:flex;flex-direction:column;gap:14px;max-width:68ch;margin:0 auto;width:100%}
article h2{font-family:var(--display);font-weight:700;font-size:1.55rem;line-height:1.2;margin:26px 0 0;text-wrap:balance}
article h3{font-family:var(--display);font-weight:600;font-size:1.15rem;margin:10px 0 0}
article p,article ul,article ol{margin:0}
article ul,article ol{padding-left:1.3em;display:flex;flex-direction:column;gap:6px}
article ol li::marker{font-family:var(--mono);color:var(--accent);font-weight:600}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px 18px}
.toc strong{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px}
.toc ol{gap:2px;font-size:.95rem}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:.93rem;min-width:520px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--panel);font-weight:600}
tr:last-child td{border-bottom:0}
td code,p code{font-family:var(--mono);font-size:.9em}
.note{border-left:3px solid var(--dust);padding:6px 0 6px 14px;color:var(--muted)}
details{border-bottom:1px solid var(--line);padding:12px 0}
details summary{cursor:pointer;font-weight:600;list-style-position:outside}
details p{margin-top:8px;color:var(--fg)}
.updated{font-size:.85rem;color:var(--muted)}

/* simple pages */
.doc{max-width:68ch;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.doc h2{font-family:var(--display);font-size:1.3rem;margin:18px 0 0}
.doc p,.doc ul{margin:0}
.copyrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.copyrow code{font-family:var(--mono);background:var(--panel);border:1px solid var(--line);padding:8px 12px;border-radius:8px;user-select:all}
.copyrow button{font:600 .9rem var(--body);padding:8px 16px;border-radius:999px;border:1.5px solid var(--accent);background:transparent;color:var(--accent);cursor:pointer}

footer{border-top:1px solid var(--line);background:var(--panel)}
footer .in{max-width:1000px;margin:0 auto;padding-block:22px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.88rem;color:var(--muted)}
footer nav{display:flex;gap:14px;flex-wrap:wrap}
footer a{color:var(--muted)}
@media (max-width:440px){.topbar nav{gap:12px}.topbar nav a{font-size:.85rem}.topbar nav a:first-child{display:none}main{padding-block:18px 48px}.page{gap:26px}.modes button{font-size:.76rem}.readout b{font-size:1rem}body{font-size:16px}}

/* ---- tool v2 ---- */
:root{--ear:#B0457A;--mic:#3D6FB8;--hz:#8A6A12}
@media (prefers-color-scheme:dark){:root{--ear:#E37FB0;--mic:#7FA8EC;--hz:#D9B44A}}
.modes{grid-template-columns:repeat(4,1fr)}
.modes button.install{border:1.5px dashed var(--line);color:var(--fg)}
.seg{display:flex;align-items:center;gap:6px;background:var(--bg);padding:4px;border-radius:999px}
.seg span{font:600 .72rem var(--body);text-transform:uppercase;letter-spacing:.08em;color:var(--muted);padding:0 8px 0 10px}
.seg button{font:600 .9rem var(--mono);border:0;background:transparent;color:var(--muted);padding:7px 14px;border-radius:999px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--panel);color:var(--accent);box-shadow:0 1px 3px rgb(0 0 0/.12)}
.panel{width:100%;display:flex;flex-direction:column;gap:12px;align-items:center}
.side button[aria-pressed="true"]{background:var(--accent);color:var(--panel)}
.side button{padding:8px 14px;font-size:.86rem}
.hzrow{display:flex;gap:12px;align-items:center;width:100%}
.hzrow input[type=range]{flex:1;min-width:0;accent-color:var(--accent);height:28px}
.hzbox{display:flex;align-items:center;gap:6px;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:4px 10px}
.hzbox input{width:5.5em;border:0;background:transparent;color:var(--fg);font:600 1rem var(--mono);text-align:right;font-variant-numeric:tabular-nums}
.hzbox input:focus{outline:none}.hzbox:focus-within{outline:3px solid var(--accent);outline-offset:2px}
.hzbox span{font:600 .85rem var(--mono);color:var(--muted)}
.hznote{margin:0;font-size:.88rem;color:var(--fg);border-left:3px solid var(--dust);padding:4px 0 4px 12px;max-width:56ch}
.readout{grid-template-columns:repeat(4,1fr)}
.after{width:100%;display:flex;flex-direction:column;align-items:center;gap:10px;padding:14px;border-radius:14px;background:var(--bg);text-align:center}
.paused .go .cone{opacity:.5}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (max-width:440px){.readout{grid-template-columns:repeat(2,1fr);row-gap:12px}.modes button small{font-size:.62rem}}

/* ---- footer tool links, inner pages ---- */
footer .in{flex-direction:column}
footer .tools{display:flex;flex-wrap:wrap;gap:6px 16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
footer .tools strong{width:100%;color:var(--fg);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}
.crumbs{font-size:.85rem;color:var(--muted);display:flex;gap:6px;flex-wrap:wrap;justify-content:center}
.crumbs a{color:var(--muted)}
.related{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.related a{display:flex;flex-direction:column;gap:2px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--panel);text-decoration:none;color:var(--fg)}
.related a span{font-size:.85rem;color:var(--muted)}
.related a:hover{border-color:var(--accent)}
.vbtn{font:600 .95rem var(--body);padding:10px 18px;border-radius:999px;border:1.5px solid var(--accent);background:transparent;color:var(--accent);cursor:pointer;align-self:flex-start}
.topbar nav a[lang="hi"]{font-weight:600}

/* ---- SVG icons ---- */
.modes button .ic{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;margin-bottom:2px}
.modes button .ic .dots circle{fill:currentColor;stroke:none}
.modes button[aria-pressed="true"] .ic{stroke-width:2.1}
.go .cone{width:46%;height:auto;aspect-ratio:1;background:none;overflow:visible}
.go .cone .c-edge{fill:rgb(255 255 255/.05);stroke:rgb(255 255 255/.14);stroke-width:1.5}
.go .cone .c-ring{fill:none;stroke:rgb(255 255 255/.12);stroke-width:1.5}
.go .cone .c-cap{fill:var(--accent)}
.go .cone .c-shine{fill:none;stroke:rgb(255 255 255/.55);stroke-width:2.5;stroke-linecap:round}
.playing .go .cone .c-ring{stroke:var(--accent);stroke-opacity:.45}
html[lang="hi"] .go .sub,html[lang="hi"] .modes button small,html[lang="hi"] .seg span,html[lang="hi"] .readout span{font-family:var(--body);letter-spacing:0;text-transform:none}