/* toxee.agentx.icu — official site
   Self-contained: system font stacks only, no third-party requests except the
   GitHub releases API used to keep the download list current. */
:root{
  --ink:#070b14;
  --ink-2:#0b1220;
  --ink-3:#101a2e;
  --panel:rgba(16,26,46,.55);
  --line:rgba(148,163,184,.14);
  --line-strong:rgba(148,163,184,.28);
  --text:#e6ecf7;
  --text-dim:#9aabc3;
  --text-faint:#64748f;
  --blue:#3b82f6;
  --blue-deep:#2563eb;
  --cyan:#67e8f9;
  --green:#34d399;
  --amber:#fbbf24;
  --glow:rgba(59,130,246,.35);
  /* surfaces and text colours that the light theme below swaps out */
  --surface:rgba(16,26,46,.5);
  --surface-2:rgba(16,26,46,.4);
  --surface-deep:rgba(7,11,20,.6);
  --pkg-bg:rgba(7,11,20,.5);
  --guide-bg:rgba(11,18,32,.6);
  --faq-bg:rgba(16,26,46,.45);
  --card-1:rgba(16,26,46,.65);
  --card-2:rgba(11,18,32,.4);
  --os-1:rgba(16,26,46,.7);
  --os-2:rgba(11,18,32,.45);
  --stats-1:rgba(16,26,46,.5);
  --stats-2:rgba(16,26,46,.15);
  --bar-1:#141d31;
  --bar-2:#0e1626;
  --nav-bg:rgba(7,11,20,.76);
  --shadow-c:rgba(2,6,16,.7);
  --heading:#fff;
  --code-text:#dbe6f7;
  --amber-text:var(--amber);
  --serif:ui-serif,"New York","Iowan Old Style",Georgia,"Songti SC","Noto Serif CJK SC",serif;
  --sans:ui-sans-serif,-apple-system,"SF Pro Text","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --r:16px;
  color-scheme:dark light;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none !important}
html{scroll-behavior:smooth;scroll-padding-top:76px;overflow-x:clip}
body{
  background:var(--ink);color:var(--text);font-family:var(--sans);
  font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
::selection{background:var(--blue-deep);color:#fff}
a{color:var(--cyan)}
img{max-width:100%}
code,kbd{font-family:var(--mono);font-size:.9em}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* bilingual: both languages live in the markup, the root attribute picks one */
html[data-lang="en"] .zh,html[data-lang="zh"] .en{display:none !important}

/* backdrop */
.mesh{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(1200px 800px at 78% -10%,rgba(37,99,235,.17),transparent 60%),
    radial-gradient(900px 700px at -10% 40%,rgba(8,47,112,.26),transparent 55%),
    radial-gradient(700px 500px at 50% 110%,rgba(103,232,249,.05),transparent 60%),
    var(--ink);
}
.mesh::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%,rgba(103,232,249,.8),transparent 100%),
    radial-gradient(1.5px 1.5px at 28% 64%,rgba(59,130,246,.7),transparent 100%),
    radial-gradient(2px 2px at 41% 15%,rgba(148,163,184,.55),transparent 100%),
    radial-gradient(1.5px 1.5px at 57% 42%,rgba(103,232,249,.5),transparent 100%),
    radial-gradient(2px 2px at 66% 81%,rgba(59,130,246,.6),transparent 100%),
    radial-gradient(1.5px 1.5px at 78% 27%,rgba(148,163,184,.6),transparent 100%),
    radial-gradient(2px 2px at 89% 58%,rgba(103,232,249,.55),transparent 100%),
    radial-gradient(1.5px 1.5px at 94% 12%,rgba(59,130,246,.6),transparent 100%),
    radial-gradient(1.5px 1.5px at 8% 85%,rgba(59,130,246,.5),transparent 100%),
    radial-gradient(1.5px 1.5px at 47% 93%,rgba(148,163,184,.45),transparent 100%);
  animation:twinkle 9s ease-in-out infinite alternate;
}
@keyframes twinkle{from{opacity:.55}to{opacity:1}}

.wrap{max-width:1180px;margin:0 auto;padding:0 28px}

/* nav */
.nav{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:var(--nav-bg);border-bottom:1px solid var(--line);
}
.nav-in{display:flex;align-items:center;gap:6px;height:64px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;text-decoration:none;color:var(--text)}
.brand img{width:30px;height:30px;border-radius:8px;display:block}
.brand span{font-size:19px;letter-spacing:.2px}
.nav-spacer{flex:1}
.nav-links{display:flex;gap:2px}
.nav-a{color:var(--text-dim);text-decoration:none;font-size:14.5px;padding:8px 11px;border-radius:8px}
.nav-a:hover{color:var(--text);background:rgba(148,163,184,.08)}
.lang-toggle{
  font-family:var(--mono);font-size:13px;color:var(--cyan);background:transparent;
  border:1px solid var(--line-strong);border-radius:999px;padding:6px 14px;cursor:pointer;margin:0 6px;
}
.lang-toggle:hover{border-color:var(--cyan)}
.gh{
  display:inline-flex;align-items:center;gap:8px;background:var(--text);color:var(--ink);
  font-weight:600;font-size:14.5px;border-radius:999px;padding:8px 16px;text-decoration:none;
}
.gh:hover{box-shadow:0 6px 22px rgba(230,236,247,.18)}
.menu-btn{
  display:none;place-items:center;width:40px;height:40px;padding:0;margin-left:6px;cursor:pointer;
  color:var(--text);background:var(--surface);border:1px solid var(--line-strong);border-radius:10px;
}

/* shared chrome */
.eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.16em;color:var(--cyan);text-transform:uppercase}
.eyebrow::before{content:"// ";color:var(--text-faint)}
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.01em}
.frame{
  border-radius:14px;border:1px solid var(--line-strong);background:var(--ink-2);
  box-shadow:0 24px 80px var(--shadow-c);overflow:hidden;
}
.frame .bar{
  display:flex;align-items:center;gap:6px;height:32px;padding:0 13px;
  background:linear-gradient(180deg,var(--bar-1),var(--bar-2));border-bottom:1px solid var(--line);
}
.frame .bar i{width:10px;height:10px;border-radius:50%;display:block}
.frame .bar i:nth-child(1){background:#ff5f57}
.frame .bar i:nth-child(2){background:#febc2e}
.frame .bar i:nth-child(3){background:#28c840}
.frame .bar b{margin-left:10px;font-family:var(--mono);font-weight:400;font-size:12px;color:var(--text-faint)}
.frame img{display:block;width:100%;height:auto}

.btn{
  display:inline-flex;align-items:center;gap:10px;border-radius:12px;padding:13px 24px;
  font-size:16px;font-weight:600;text-decoration:none;transition:.18s;cursor:pointer;border:0;font-family:inherit;
}
.btn svg{width:18px;height:18px;flex:none}
.btn-blue{
  background:linear-gradient(180deg,var(--blue),var(--blue-deep));color:#fff;
  box-shadow:0 10px 30px rgba(37,99,235,.35),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-blue:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(37,99,235,.5)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--blue);background:rgba(37,99,235,.12)}

/* hero */
.hero{padding:80px 0 0}
.hero-grid{display:grid;grid-template-columns:minmax(0,45fr) minmax(0,55fr);gap:52px;align-items:center}
.hero h1{font-size:clamp(42px,5.4vw,70px);line-height:1.06;margin:18px 0 22px}
.hero h1 em{font-style:italic;color:var(--blue);text-shadow:0 0 34px var(--glow)}
.hero .lead{font-size:19px;color:var(--text-dim);max-width:34em}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;align-items:center}
.btn-dl{flex-direction:column;align-items:flex-start;gap:0;padding:12px 26px 12px 22px}
.btn-dl .row{display:flex;align-items:center;gap:10px}
.btn-dl small{font-weight:400;font-size:12.5px;opacity:.8;font-family:var(--mono);margin-left:28px}
.hero-alt{margin-top:14px;font-size:14px;color:var(--text-faint)}
.hero-alt a{color:var(--text-dim)}
.badge{
  display:inline-flex;gap:8px;align-items:center;font-family:var(--mono);font-size:12px;color:var(--text-dim);
  border:1px solid var(--line-strong);border-radius:999px;padding:4px 12px;margin-top:26px;text-decoration:none;
}
.badge b{color:var(--green);font-weight:400}
.hero-shot{position:relative}
.hero-shot .frame{transform:rotate(-1.2deg);transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.hero-shot:hover .frame{transform:none}
.hero-shot::before{
  content:"";position:absolute;inset:-8% -6% -14% -6%;z-index:-1;border-radius:32px;
  background:radial-gradient(60% 60% at 60% 40%,rgba(37,99,235,.28),transparent 70%);filter:blur(8px);
}

.rise{opacity:0;transform:translateY(18px);animation:rise .8s cubic-bezier(.2,.8,.2,1) forwards}
.d1{animation-delay:.05s}.d2{animation-delay:.15s}.d3{animation-delay:.25s}.d4{animation-delay:.38s}.d5{animation-delay:.52s}
@keyframes rise{to{opacity:1;transform:none}}

.stats{margin-top:76px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--stats-1),var(--stats-2))}
.stats-in{display:grid;grid-template-columns:repeat(5,1fr)}
.stat{padding:28px 22px;border-left:1px solid var(--line)}
.stat:first-child{border-left:none}
.stat .n{font-family:var(--serif);font-size:32px;line-height:1.15;color:var(--heading)}
.stat .n sup{font-size:15px;color:var(--blue)}
.stat .l{font-family:var(--mono);font-size:12px;color:var(--text-dim);margin-top:6px;letter-spacing:.04em;line-height:1.5}

/* sections */
section{padding:104px 0 0}
.sec-head{max-width:780px}
.sec-head h2{font-size:clamp(30px,3.6vw,44px);line-height:1.15;margin:14px 0 14px}
.sec-head p{color:var(--text-dim);font-size:18px}
.sec-head.center{margin:0 auto;text-align:center}

/* cards */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:46px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px}
.card{
  position:relative;border:1px solid var(--line);border-radius:18px;
  background:linear-gradient(180deg,var(--card-1),var(--card-2));padding:28px 26px;transition:.25s;
}
.card:hover{border-color:rgba(59,130,246,.45);transform:translateY(-3px)}
.card .ic{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(37,99,235,.16);border:1px solid rgba(59,130,246,.35);margin-bottom:18px;
}
.card .ic svg{width:22px;height:22px;stroke:var(--cyan);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-family:var(--sans);font-size:18.5px;margin-bottom:8px;font-weight:650}
.card p{color:var(--text-dim);font-size:15.5px}
.card .tag{position:absolute;top:24px;right:22px;font-family:var(--mono);font-size:12px;color:var(--text-faint);letter-spacing:.1em}
.card.mini{padding:22px 22px}
.card.mini h3{font-size:16.5px}
.card.mini p{font-size:14.5px}

/* feature rows */
.feat{display:grid;grid-template-columns:minmax(0,40fr) minmax(0,60fr);gap:56px;align-items:center;margin-top:96px}
.feat.flip{grid-template-columns:minmax(0,60fr) minmax(0,40fr)}
.feat.flip .feat-copy{order:2}
.feat-copy h3{font-size:31px;line-height:1.18;margin:12px 0 14px}
.feat-copy > p{color:var(--text-dim);font-size:16.5px}
.ticks{list-style:none;margin-top:20px;display:grid;gap:11px}
.ticks li{padding-left:26px;position:relative;color:var(--text-dim);font-size:15.5px;line-height:1.6}
.ticks li::before{content:"▸";position:absolute;left:2px;color:var(--blue)}
.ticks li b{color:var(--text);font-weight:600}
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}
.duo > :nth-child(2){margin-top:28px}
.phone-duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;width:100%;max-width:520px;margin-left:auto;margin-right:auto}
.phone-duo > :nth-child(2){margin-top:36px}

/* illustrative mock panels (calls, pairing, network) */
.mock{
  border:1px solid var(--line-strong);border-radius:22px;padding:30px;
  background:radial-gradient(120% 90% at 50% 0%,rgba(37,99,235,.20),transparent 60%),var(--ink-2);
  box-shadow:0 24px 80px rgba(2,6,16,.6);
}
.call{max-width:400px;margin:0 auto;text-align:center}
.call .avatar{
  width:96px;height:96px;border-radius:50%;margin:8px auto 14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#3b82f6,#1d4ed8);font-size:40px;font-weight:700;color:#fff;
  box-shadow:0 0 0 10px rgba(59,130,246,.12),0 0 0 22px rgba(59,130,246,.06);
}
.call .who{font-size:22px;font-weight:650}
.call .meta{font-family:var(--mono);font-size:12.5px;color:var(--text-dim);margin-top:4px}
.call .q{display:inline-flex;gap:6px;align-items:center;margin-top:12px;font-size:12.5px;color:var(--green);font-family:var(--mono)}
.call .q i{width:4px;background:var(--green);border-radius:2px;display:block}
.call .ctrls{display:flex;justify-content:center;gap:16px;margin-top:28px}
.call .ctrls span{
  width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(148,163,184,.14);border:1px solid var(--line-strong);
}
.call .ctrls span.end{background:#ef4444;border-color:#ef4444}
.call .ctrls svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.call .route{margin-top:22px;display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.chip{font-family:var(--mono);font-size:12px;color:var(--text-dim);border:1px solid var(--line-strong);border-radius:999px;padding:3px 11px}
.chip.on{color:var(--cyan);border-color:rgba(103,232,249,.5);background:rgba(103,232,249,.07)}

.pair{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:center}
.dev{border:1px solid var(--line-strong);border-radius:18px;padding:20px;background:var(--surface-deep);text-align:center}
.dev .lbl{font-family:var(--mono);font-size:12px;color:var(--text-faint);letter-spacing:.08em}
.dev .qr{width:118px;height:118px;margin:14px auto;border-radius:10px;background:#fff;padding:9px}
.dev .qr svg{width:100%;height:100%;display:block}
.dev .sas{font-family:var(--mono);font-size:26px;letter-spacing:.18em;color:var(--heading);margin:22px 0 6px}
.dev .ok{font-size:13px;color:var(--green)}
.pair .link{display:flex;flex-direction:column;align-items:center;gap:6px;font-family:var(--mono);font-size:12px;color:var(--text-faint)}
.pair .link svg{width:64px;height:24px}

.net svg{width:100%;height:auto;display:block}
.net text{font-family:var(--mono);font-size:12px;fill:var(--text-dim)}

.apps{display:grid;gap:14px}
.app{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:flex-start;border:1px solid var(--line-strong);border-radius:16px;padding:18px 20px;background:var(--surface-deep)}
.app .ai{width:46px;height:46px;border-radius:12px;flex:none;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:700;font-size:15px;color:#fff}
.app > div:not(.ai){flex:1;min-width:0}
.app h4{font-size:16px;font-weight:650;overflow-wrap:anywhere}
.app p{font-size:14px;color:var(--text-dim);line-height:1.55}
.app .st{margin-left:auto;font-family:var(--mono);font-size:12px;color:var(--green);white-space:nowrap}

.langs{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.langs span{border:1px solid var(--line-strong);border-radius:10px;padding:8px 14px;font-size:15px;background:var(--surface)}

/* gallery tabs */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:38px}
.tab{
  font-family:var(--mono);font-size:13.5px;color:var(--text-dim);background:var(--surface);
  border:1px solid var(--line-strong);border-radius:999px;padding:8px 18px;cursor:pointer;
}
.tab[aria-selected="true"]{color:#fff;background:var(--blue-deep);border-color:var(--blue)}
.gallery{margin-top:28px;display:grid;gap:18px}
.gallery.desktop{grid-template-columns:repeat(2,1fr)}
.gallery.ipad{grid-template-columns:repeat(3,1fr)}
.gallery.phone{grid-template-columns:repeat(5,1fr)}
.gallery figure{margin:0}
.gallery figcaption{font-family:var(--mono);font-size:12px;color:var(--text-faint);text-align:center;margin-top:10px}
.gallery .frame{border-radius:12px}
.gallery img,.duo img,.phone-duo img{cursor:zoom-in}

/* screenshot viewer (built by site.js) */
.lightbox{border:0;padding:0;margin:0;width:100vw;height:100dvh;max-width:none;max-height:none;background:transparent;color:#fff}
.lightbox::backdrop{background:rgba(2,5,12,.9)}
.lightbox figure{margin:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:56px 16px 24px;box-sizing:border-box}
.lightbox img{max-width:100%;max-height:calc(100dvh - 120px);object-fit:contain;border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.lightbox figcaption{font-size:15px;color:rgba(255,255,255,.8);text-align:center}
.lb-btn{
  position:absolute;width:44px;height:44px;display:grid;place-items:center;cursor:pointer;
  font:400 26px/1 var(--sans);color:#fff;background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;
}
.lb-btn:hover{background:rgba(255,255,255,.2)}
.lb-close{top:10px;right:12px}
.lb-prev,.lb-next{top:50%;transform:translateY(-50%)}
.lb-prev{left:12px}
.lb-next{right:12px}
.lightbox.single .lb-prev,.lightbox.single .lb-next{display:none}
@media (max-width:600px){.lb-prev,.lb-next{top:auto;bottom:16px;transform:none}.lightbox figure{padding-bottom:72px}.lightbox img{max-height:calc(100dvh - 170px)}}
.gallery.phone .frame{border-radius:20px}

/* downloads */
.dl-meta{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:22px;font-family:var(--mono);font-size:13px;color:var(--text-dim)}
.dl-meta a{color:var(--cyan)}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.os{min-width:0;border:1px solid var(--line);border-radius:20px;background:linear-gradient(180deg,var(--os-1),var(--os-2));padding:24px;display:flex;flex-direction:column}
.os.hl{border-color:rgba(59,130,246,.6);box-shadow:0 0 0 1px rgba(59,130,246,.35),0 18px 50px rgba(37,99,235,.18)}
.os-h{display:flex;align-items:center;gap:12px}
.os-h svg{width:30px;height:30px;fill:var(--text)}
.os-h h3{font-family:var(--sans);font-size:20px;font-weight:650}
.os-h .yours{margin-left:auto;font-family:var(--mono);font-size:12px;color:var(--cyan);border:1px solid rgba(103,232,249,.4);border-radius:999px;padding:2px 9px;display:none}
.os.hl .yours{display:inline-block}
.os .req{font-size:13px;color:var(--text-faint);margin:6px 0 16px}
.pkgs{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
.pkg{
  display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;text-decoration:none;color:var(--text);
  border:1px solid var(--line-strong);background:var(--pkg-bg);transition:.15s;
}
.pkg:hover{border-color:var(--blue);background:rgba(37,99,235,.12)}
.pkg .pi{flex:1;min-width:0}
.pkg .pn{font-weight:600;font-size:15px;display:block}
.pkg .pf{font-family:var(--mono);font-size:12px;color:var(--text-faint);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pkg .ps{font-family:var(--mono);font-size:12px;color:var(--text-dim);white-space:nowrap}
.pkg svg{width:18px;height:18px;stroke:var(--cyan);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.os .note{font-size:13.5px;color:var(--text-dim);margin-top:4px}
.os .note a{color:var(--cyan)}
.verify{margin-top:28px;border:1px solid var(--line);border-radius:16px;background:var(--surface-2)}
.verify summary{cursor:pointer;padding:16px 20px;font-weight:600;font-size:15.5px;list-style:none;display:flex;align-items:center;gap:10px}
.verify summary::-webkit-details-marker{display:none}
.verify summary::before{content:"+";font-family:var(--mono);color:var(--cyan);width:14px}
.verify[open] summary::before{content:"−"}
.verify .vb{padding:0 20px 20px}
.verify p{color:var(--text-dim);font-size:14.5px;margin-bottom:12px}
.sums{font-family:var(--mono);font-size:12px;line-height:1.9;color:#c7d4ea;background:#04070f;border:1px solid var(--line);border-radius:10px;padding:14px 16px;overflow-x:auto;white-space:pre}

/* install guide */
.guide{margin-top:30px;border:1px solid var(--line-strong);border-radius:18px;background:var(--guide-bg);overflow:hidden}
.guide .tabs{margin:0;padding:16px 18px;border-bottom:1px solid var(--line);background:var(--surface)}
.panel{padding:26px 28px}
.steps{counter-reset:s;list-style:none;display:grid;gap:16px}
.steps > li{counter-increment:s;position:relative;padding-left:44px;color:var(--text-dim);font-size:15.5px}
.steps > li::before{
  content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:13px;
  color:var(--cyan);border:1px solid rgba(103,232,249,.4);background:rgba(103,232,249,.06);
}
.steps b{color:var(--text)}
.steps code{background:rgba(148,163,184,.12);padding:1px 6px;border-radius:5px;color:var(--code-text)}
.term{
  margin-top:10px;font-family:var(--mono);font-size:13.5px;line-height:1.85;color:#c7d4ea;background:#04070f;
  border:1px solid var(--line);border-radius:10px;padding:14px 16px;overflow-x:auto;white-space:pre;position:relative;
}
.term b{color:var(--cyan);font-weight:400}
.term i{color:var(--text-faint);font-style:normal}
.copy{
  position:absolute;top:8px;right:8px;font-family:var(--mono);font-size:12px;color:var(--text-dim);
  background:rgba(148,163,184,.1);border:1px solid var(--line-strong);border-radius:6px;padding:6px 12px;cursor:pointer;
}
.copy:hover{color:#fff;border-color:var(--cyan)}
.callout{margin-top:18px;border-left:3px solid var(--amber);background:rgba(251,191,36,.06);padding:12px 16px;border-radius:0 10px 10px 0;font-size:14.5px;color:var(--text-dim)}
.callout b{color:var(--amber-text)}

/* build */
.build{margin-top:40px;border:1px solid var(--line-strong);border-radius:16px;overflow:hidden;background:#04070f;box-shadow:0 24px 70px rgba(2,6,16,.6)}
.build .bhead{display:flex;align-items:center;gap:10px;padding:12px 18px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:12px;color:var(--text-faint)}
.build pre{padding:22px 26px;font-family:var(--mono);font-size:14px;line-height:1.9;color:#c7d4ea;overflow-x:auto}
.build pre b{color:var(--cyan);font-weight:400}
.build pre i{color:var(--text-faint);font-style:normal}
.arch{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:40px;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.arch div{padding:20px 20px;border-left:1px solid var(--line);background:var(--surface-2)}
.arch div:first-child{border-left:none}
.arch b{display:block;font-family:var(--mono);font-size:13px;color:var(--cyan);font-weight:400;margin-bottom:6px}
.arch span{font-size:14px;color:var(--text-dim);line-height:1.55;display:block}

/* faq */
.faq{margin-top:36px;display:grid;gap:12px;max-width:900px}
.faq details{border:1px solid var(--line);border-radius:14px;background:var(--faq-bg)}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:600;font-size:16.5px;list-style:none;display:flex;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";margin-left:auto;font-family:var(--mono);color:var(--cyan)}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 22px 20px;color:var(--text-dim);font-size:15.5px}
.faq .a p + p{margin-top:10px}

/* footer */
footer{margin-top:120px;border-top:1px solid var(--line);padding:44px 0 56px;color:var(--text-faint);font-size:14px}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.foot h4{font-size:13px;font-family:var(--mono);color:var(--text-dim);font-weight:400;letter-spacing:.1em;text-transform:uppercase;margin-bottom:12px}
.foot ul{list-style:none;display:grid;gap:8px}
.foot a{color:var(--text-dim);text-decoration:none}
.foot a:hover{color:var(--cyan)}
.foot .blurb{margin-top:12px;max-width:30em;line-height:1.6}
.foot-bottom{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;font-size:13px}
.foot-bottom .sp{flex:1}

.toast{
  position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);opacity:0;pointer-events:none;
  background:var(--ink-3);border:1px solid var(--line-strong);color:var(--text);padding:9px 18px;border-radius:999px;
  font-size:14px;transition:.25s;z-index:100;
}
.toast.show{opacity:1;transform:translateX(-50%)}

/* light theme: follows the system setting */
@media (prefers-color-scheme:light){
  :root{
    --ink:#f4f6fb;--ink-2:#fff;--ink-3:#fff;
    --line:rgba(15,23,42,.1);--line-strong:rgba(15,23,42,.18);
    --text:#0f172a;--text-dim:#475569;--text-faint:#5b6b82;
    --cyan:#0e7490;--green:#047857;--amber-text:#b45309;--glow:rgba(59,130,246,.2);
    --surface:#fff;--surface-2:#fff;--surface-deep:#f8fafc;--pkg-bg:#f8fafc;--guide-bg:#fff;--faq-bg:#fff;
    --card-1:#fff;--card-2:#f8fafc;--os-1:#fff;--os-2:#f8fafc;
    --stats-1:rgba(255,255,255,.85);--stats-2:rgba(255,255,255,.4);
    --bar-1:#f1f5f9;--bar-2:#e7ecf3;
    --nav-bg:rgba(244,246,251,.84);--shadow-c:rgba(15,23,42,.14);
    --heading:#0f172a;--code-text:#0f172a;
  }
  .mesh{
    background:
      radial-gradient(1200px 800px at 78% -10%,rgba(37,99,235,.12),transparent 60%),
      radial-gradient(900px 700px at -10% 40%,rgba(14,116,144,.08),transparent 55%),
      var(--ink);
  }
  .mesh::before{display:none}
  .card:hover{border-color:rgba(37,99,235,.45)}
  .gh:hover{box-shadow:0 6px 22px rgba(15,23,42,.18)}
  .tab[aria-selected="true"]{color:#fff}
  /* The app-UI illustrations and the terminals stay dark, like the app's own dark theme. */
  .mock,.term,.build,.sums{
    --ink:#070b14;--ink-2:#0b1220;
    --line:rgba(148,163,184,.14);--line-strong:rgba(148,163,184,.28);
    --text:#e6ecf7;--text-dim:#9aabc3;--text-faint:#64748f;
    --cyan:#67e8f9;--green:#34d399;--amber-text:var(--amber);
    --surface-deep:rgba(7,11,20,.6);--heading:#fff;
    color:var(--text);
  }
}

@media (prefers-reduced-motion:reduce){
  .mesh::before{animation:none}
  *{animation-duration:.001s !important;transition-duration:.001s !important}
  .rise{opacity:1;transform:none}
}

@media (max-width:1060px){
  .nav-links{display:none}
  .menu-btn:not([hidden]){display:inline-grid}
  .lang-toggle{min-height:40px}
  /* Opened by the menu button: the section links drop down under the bar. */
  .nav.open .nav-links{
    display:flex;flex-direction:column;gap:2px;
    position:absolute;left:0;right:0;top:100%;padding:8px 16px 16px;
    background:var(--ink-2);border-bottom:1px solid var(--line);box-shadow:0 24px 60px var(--shadow-c);
  }
  .nav.open .nav-a{font-size:16px;padding:12px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:44px}
  .stats-in{grid-template-columns:repeat(3,1fr)}
  .stat:nth-child(4){border-left:none}
  .stat:nth-child(n+4){border-top:1px solid var(--line)}
  .grid3,.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feat,.feat.flip{grid-template-columns:minmax(0,1fr);gap:34px;margin-top:80px}
  .feat.flip .feat-copy{order:0}
  .gallery.phone{grid-template-columns:repeat(3,1fr)}
  .arch{grid-template-columns:1fr 1fr}
  .arch div:nth-child(3){border-left:none}
  .arch div:nth-child(n+3){border-top:1px solid var(--line)}
  .foot{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .gh span{display:none}
  .gh{padding:0;width:40px;height:40px;justify-content:center}
  .hero{padding-top:48px}
  .stats-in{grid-template-columns:1fr 1fr}
  .stat{border-left:none;border-top:1px solid var(--line)}
  .stat:nth-child(even){border-left:1px solid var(--line)}
  .stat:first-child,.stat:nth-child(2){border-top:none}
  .grid3,.grid4,.dl-grid,.gallery.desktop,.gallery.ipad{grid-template-columns:minmax(0,1fr)}
  .gallery.phone{grid-template-columns:1fr 1fr}
  .duo{grid-template-columns:minmax(0,1fr)}
  .duo > :nth-child(2){margin-top:0}
  .pair{grid-template-columns:1fr}
  .pair .link{transform:rotate(90deg)}
  .panel{padding:20px 16px}
  .mock{padding:20px}
  .app .st{flex-basis:100%;margin-left:62px}
  .arch{grid-template-columns:1fr}
  .arch div{border-left:none !important;border-top:1px solid var(--line)}
  .arch div:first-child{border-top:none}
  .foot{grid-template-columns:1fr}
  section{padding-top:80px}
}