/* Dusk theme: dark-first, soft contrast, one accent */
:root{
  color-scheme:dark light;
  --bg:#12111f;--surf:#1a1932;--surf2:#232142;--fg:#e9e8f6;--mut:#a9a7c8;
  --line:#2d2b50;--acc:#a29fff;--acc-h:#bab8ff;--on:#14132a;--ok:#7fd8b0;
  --a1:#f0a6ca;--a2:#8fd0ff;--a3:#ffd391;
  --r-lg:1.5rem;--r-md:1rem;--r-sm:.7rem;
  --font:ui-rounded,"SF Pro Rounded","Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Roboto,sans-serif;
}
@media (prefers-color-scheme:light){:root{
  --bg:#f5f4fb;--surf:#fff;--surf2:#ebe9f8;--fg:#25233e;--mut:#5b5979;
  --line:#dddbf0;--acc:#4a45d1;--acc-h:#3a35b0;--on:#fff;--ok:#2e9d70;
  --a1:#e27aaa;--a2:#5eaee8;--a3:#e9ac4c;
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:1.5rem}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--fg);font:1.0625rem/1.65 var(--font);-webkit-font-smoothing:antialiased;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
.top,main,footer{max-width:66rem;margin:0 auto;padding-inline:1.25rem}
.top{display:flex;justify-content:space-between;align-items:center;padding-block:1.5rem}
.mark{font-weight:800;font-size:1.3rem;letter-spacing:-.02em}
.top a{color:var(--mut);text-decoration:none;padding:.4rem .9rem;border-radius:2rem}
.top a:hover{background:var(--surf2);color:var(--fg)}
a{color:var(--acc);text-underline-offset:.2em}

/* hero: text left, a drawn chat window right */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(1.5rem,4vw,3.5rem);align-items:center;padding-block:1.5rem 1rem}
h1{font-size:clamp(2.3rem,5.5vw,3.6rem);line-height:1.08;letter-spacing:-.03em;margin:0 0 1rem;font-weight:760;max-width:13ch}
h2{font-size:1.3rem;margin:3.5rem 0 1.1rem;font-weight:700;letter-spacing:-.01em}
h3{margin:0;font-size:1.15rem;font-weight:700}
.lead{color:var(--mut);margin:0;max-width:46ch}
.pick{margin:1.75rem 0 1.25rem;max-width:24rem}
.btn{display:block;text-align:center;text-decoration:none;font-weight:650;padding:.8rem 1.1rem;border-radius:var(--r-sm);
  background:var(--acc);color:var(--on);transition:background-color .15s,transform .15s}
.btn:hover{background:var(--acc-h)}.btn:active{transform:scale(.985)}
.btn.alt{background:transparent;color:var(--acc);box-shadow:inset 0 0 0 1.5px var(--acc)}
.btn.alt:hover{background:var(--surf2)}
.btn.big{font-size:1.2rem;padding:1.1rem 1.4rem;border-radius:var(--r-md)}
.note{margin:.7rem .2rem 0;color:var(--mut);font-size:.93rem;line-height:1.5}
.chips{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin:1.25rem 0 .6rem;color:var(--mut);font-size:.93rem}
.chips a{background:var(--surf);color:var(--fg);padding:.4rem .95rem;border-radius:2rem;text-decoration:none;font-weight:600;box-shadow:inset 0 0 0 1px var(--line)}
.chips a:hover{background:var(--surf2)}
.help{color:var(--mut);font-size:.93rem;max-width:34rem}
.help ul{margin:.6rem 0 0;padding-left:1.2rem}.help li{margin:.45rem 0}.help strong{color:var(--fg)}

/* drawn chat window (decorative) */
.win{background:var(--surf);border-radius:var(--r-lg);box-shadow:0 0 0 1px var(--line),0 24px 60px -24px rgba(0,0,0,.45);overflow:hidden}
.bar{display:flex;align-items:center;gap:.4rem;padding:.7rem 1rem;background:var(--surf2);font-size:.8rem;color:var(--mut)}
.bar b{margin-left:.6rem;font-weight:600}
.dot{width:.65rem;height:.65rem;border-radius:50%;background:var(--line)}
.body{display:grid;grid-template-columns:3rem 7.5rem 1fr;min-height:15rem}
.side{background:var(--bg);display:flex;flex-direction:column;align-items:center;gap:.6rem;padding:.8rem 0}
.srv{width:1.9rem;height:1.9rem;border-radius:.65rem;background:var(--surf2)}
.srv.on{background:var(--acc);border-radius:.55rem}
.chans{padding:.8rem .6rem;display:flex;flex-direction:column;gap:.2rem;border-right:1px solid var(--line)}
.ch{font-size:.78rem;color:var(--mut);padding:.25rem .5rem;border-radius:.4rem}
.ch::before{content:"# ";opacity:.6}
.ch.cur{background:var(--surf2);color:var(--fg)}
.ch.voice{margin-top:.5rem}.ch.voice::before{content:"";display:inline-block;width:.45rem;height:.45rem;border-radius:50%;background:var(--ok);margin-right:.4rem}
.chat{padding:1rem;display:flex;flex-direction:column;gap:.9rem}
.msg{display:flex;gap:.65rem}
.av{flex:none;width:1.7rem;height:1.7rem;border-radius:50%}
.a1{background:var(--a1)}.a2{background:var(--a2)}.a3{background:var(--a3)}
.ln{display:flex;flex-direction:column;gap:.35rem;flex:1;padding-top:.15rem}
.ln i{display:block;height:.5rem;border-radius:.3rem;background:var(--line)}
.ln i:first-child{background:var(--mut);opacity:.55;height:.45rem}
.w25{width:25%}.w30{width:30%}.w40{width:40%}.w45{width:45%}.w60{width:60%}.w70{width:70%}.w80{width:80%}
.input{margin-top:auto;height:2rem;border-radius:.6rem;background:var(--surf2)}

/* download cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(17.5rem,1fr));gap:1rem;align-items:start}
.os{background:var(--surf);border-radius:var(--r-md);padding:1.5rem;display:flex;flex-direction:column;gap:.75rem;box-shadow:inset 0 0 0 1px var(--line)}
.os.match{box-shadow:inset 0 0 0 2px var(--acc)}
.os.match::before{content:"Recommended for your device";font-size:.86rem;font-weight:650;color:var(--acc)}
.req{margin:-.35rem 0 .1rem;color:var(--mut);font-size:.92rem}
details{font-size:.95rem}
summary{cursor:pointer;color:var(--mut);padding:.2rem 0}summary:hover{color:var(--fg)}
details a{display:block;margin:.4rem 0 0 .6rem}
details p{margin:.5rem 0 0;color:var(--mut)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:.55rem .25rem;border-bottom:1px solid var(--line);font-weight:400}
tbody tr:last-child>*{border-bottom:0}
th[scope=row]{font-weight:650}thead th{color:var(--mut);font-size:.86rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.row{display:flex;flex-wrap:wrap;gap:.75rem}.row .btn{display:inline-block}
.safe{background:var(--surf);padding:1.5rem 1.75rem;border-radius:var(--r-md);margin-top:3.5rem;box-shadow:inset 0 0 0 1px var(--line)}
.safe h2{margin:0 0 .5rem;font-size:1.15rem}
.safe ul{margin:0;padding-left:1.2rem;color:var(--mut)}.safe li{margin:.45rem 0}.safe strong{color:var(--fg)}
footer{color:var(--mut);font-size:.9rem;padding-block:3rem 4rem}footer p{max-width:55ch;margin:0}
a:focus-visible,summary:focus-visible{outline:3px solid var(--acc);outline-offset:3px;border-radius:.4rem}
@media (max-width:50rem){.hero{grid-template-columns:1fr}.pick{max-width:none}.body{grid-template-columns:2.6rem 1fr}.chans{display:none}}


/* refinements */
body{background:var(--bg) linear-gradient(180deg,var(--surf) 0,var(--bg) 34rem) no-repeat}
@media (prefers-color-scheme:light){body{background:var(--bg)}}
.hd{display:flex;align-items:center;gap:.7rem;color:var(--acc)}.hd h3{color:var(--fg)}
.os{padding:1.6rem;transition:transform .2s}
.os:hover{transform:translateY(-2px)}
.os.match::before{align-self:flex-start;background:var(--surf2);padding:.15rem .7rem;border-radius:2rem}
.hero{padding-block:2rem 1.5rem}
h1{font-size:clamp(2.4rem,6vw,3.9rem)}
.btn.big{font-size:1.25rem;padding:1.2rem 1.5rem;box-shadow:0 10px 28px -12px var(--acc)}
.win{transform:rotate(-1.2deg);transition:transform .4s}.win:hover{transform:rotate(0)}
.body{min-height:19rem}
.typing{display:inline-flex;gap:.28rem;align-items:center;background:var(--surf2);padding:.5rem .7rem;border-radius:.8rem;align-self:flex-start}
.typing i{width:.38rem;height:.38rem;border-radius:50%;background:var(--mut);animation:bob 1.2s infinite ease-in-out}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes bob{0%,60%,100%{transform:translateY(0);opacity:.5}30%{transform:translateY(-.25rem);opacity:1}}
.vrow{display:flex;align-items:center;gap:.4rem;padding:.55rem .7rem;border-radius:.7rem;background:var(--bg)}
.vl{font-size:.75rem;color:var(--mut);margin-right:auto}.vrow .av{width:1.4rem;height:1.4rem}
.spk{animation:ring 2s infinite}
@keyframes ring{0%,100%{box-shadow:0 0 0 0 transparent}50%{box-shadow:0 0 0 .22rem color-mix(in srgb,var(--ok) 55%,transparent)}}
.safe ul{padding-left:1.4rem}.safe li{list-style:none;position:relative}
.safe li::before{content:"\2713";position:absolute;left:-1.4rem;color:var(--ok);font-weight:700}
@media (max-width:50rem){.win{transform:none}.hero{padding-top:1rem}}

/* top "Open in browser" button */
.top .web{display:inline-flex;align-items:center;gap:.5rem;color:var(--acc);font-weight:650;font-size:.95rem;
  padding:.55rem 1.1rem;border-radius:2rem;box-shadow:inset 0 0 0 1.5px var(--acc);transition:background-color .15s,color .15s}
.top .web:hover{background:var(--acc);color:var(--on)}
.top .web:active{transform:scale(.97)}