/* ============================================================
   TakeVox landing page — light theme
   Served at /landing.css (go:embed). Class hooks used by
   /landing.js: .reveal/.in, html.js, .hi.d1-6, .live, .toast.show,
   .dcard.highlight, .tag; IDs: demo-*.
   ============================================================ */

/* ===== design tokens (light) ===== */
:root{
  --bg:#f6f7fb;
  --surface:#ffffff;
  --surface-2:#eef1f8;
  --panel:rgba(255,255,255,.85);
  --panel-solid:#ffffff;
  --line:#e3e7f0;
  --line-strong:#cdd5e6;
  --text:#141b2d;
  --muted:#55607a;
  --dim:#8b94a8;
  --cyan:#0ea5e9;
  --violet:#7c3aed;
  --green:#16a34a;
  --grad:linear-gradient(90deg,#0ea5e9,#7c3aed);
  --radius:16px; --radius-sm:12px;
  --shadow-card:0 10px 34px rgba(24,36,80,.08);
  --shadow-pop:0 20px 50px rgba(24,36,80,.14);
  --shadow-glow:0 10px 30px rgba(14,165,233,.22);
  --ease-out:cubic-bezier(.23,1,.32,1);
  --ease-in-out:cubic-bezier(.77,0,.175,1);
  --dur-fast:160ms; --dur:240ms; --dur-slow:480ms;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI",Roboto,"Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);overflow-x:hidden;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(40% 36% at 10% 6%, rgba(14,165,233,.10), transparent 60%),
    radial-gradient(44% 40% at 90% 12%, rgba(124,58,237,.10), transparent 60%),
    radial-gradient(48% 42% at 50% 110%, rgba(22,163,74,.06), transparent 60%),
    var(--bg)}
body::after{content:"";position:fixed;inset:0;z-index:-1;opacity:.5;
  background:repeating-linear-gradient(0deg,transparent 0,transparent 39px,var(--line) 40px),
    repeating-linear-gradient(90deg,transparent 0,transparent 39px,var(--line) 40px);
  mask-image:radial-gradient(90% 70% at 50% 16%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(90% 70% at 50% 16%,#000 30%,transparent 100%)}
a{color:var(--cyan);text-decoration:none}
section{scroll-margin-top:84px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* ===== top nav ===== */
.top{position:sticky;top:0;z-index:20;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(255,255,255,.82);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:.3px;color:var(--text);flex:none}
.logo .dot{width:22px;height:22px;border-radius:7px;background:var(--grad);
  box-shadow:0 0 16px rgba(14,165,233,.4)}
.top nav{display:flex;gap:2px;margin-left:4px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.top nav::-webkit-scrollbar{display:none}
.top nav a{color:var(--muted);padding:6px 11px;border-radius:8px;font-size:14.5px;white-space:nowrap}
.top nav a:hover{color:var(--text);background:var(--surface-2)}
.lang{margin-left:auto;font-size:13.5px;color:var(--muted);flex:none}
.lang a{padding:5px 10px;border:1px solid var(--line);border-radius:999px;display:inline-block}
.lang a:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-cta{display:none}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:12px;font-weight:600;
  font-size:16px;cursor:pointer;border:none;color:var(--text);
  transition:transform var(--dur-fast) var(--ease-out),filter var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),background var(--dur-fast) var(--ease-out)}
.btn:active{transform:scale(.97)}
.btn.primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-glow)}
.btn.primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 36px rgba(14,165,233,.32)}
.btn.ghost{background:var(--surface-solid);color:var(--text);border:1px solid var(--line-strong)}
.btn.ghost:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:0 8px 24px rgba(14,165,233,.12)}
.btn.small{padding:7px 16px;font-size:13.5px;border-radius:10px}

/* ===== hero (two-column) ===== */
.hero{padding:84px 0 72px}
.hero .wrap{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero-copy{text-align:left}
.pill{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--cyan);
  border:1px solid rgba(14,165,233,.35);background:rgba(14,165,233,.07);
  padding:5px 13px;border-radius:999px;margin-bottom:22px}
.pill .pdot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green)}
.hero h1{margin:0;max-width:620px;font-size:clamp(32px,4.6vw,54px);line-height:1.14;letter-spacing:-.5px;
  font-weight:800;color:var(--text)}
.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.slogan{display:block;margin-top:14px;font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--muted)}
.slogan .zh,.secquote .zh{display:block;margin-top:5px;color:var(--dim);font-size:13px;letter-spacing:.5px;font-weight:400}
.hero .sub{margin:18px 0 0;max-width:560px;color:var(--muted);font-size:17px}
.hero .cta-row{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero .hero-note{margin-top:16px;font-size:13.5px;color:var(--muted);letter-spacing:.2px}
.hero .latest{margin-top:10px;font-size:13.5px;color:var(--dim);font-family:var(--font-mono)}

/* hero entrance: pure CSS, staggered; reduced-motion collapses it */
@keyframes heroIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.hero .hi{animation:heroIn var(--dur-slow) var(--ease-out) both}
.hero .hi.d1{animation-delay:40ms}.hero .hi.d2{animation-delay:100ms}
.hero .hi.d3{animation-delay:160ms}.hero .hi.d4{animation-delay:220ms}
.hero .hi.d5{animation-delay:300ms}.hero .hi.d6{animation-delay:420ms}

/* product mockup (light window, dark HUD overlay) */
.stage{position:relative;perspective:1200px}
.window{position:relative;background:#fff;border:1px solid var(--line-strong);border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow-pop);transform:rotateX(3deg);transform-origin:50% 100%}
.win-bar{display:flex;align-items:center;gap:6px;padding:11px 14px;border-bottom:1px solid var(--line)}
.win-bar i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.win-bar i:nth-child(1){background:#ff5f57}.win-bar i:nth-child(2){background:#febc2e}.win-bar i:nth-child(3){background:#28c840}
.win-bar span{margin-left:auto;font-size:12px;color:var(--dim);font-family:var(--font-mono)}
.win-body{position:relative;padding:34px 34px 40px;background:#fbfcfe}

/* demo editor (interactive dictation demo) */
.doc{max-width:430px;margin:0 auto;text-align:left;min-height:120px;
  font-size:15px;line-height:1.9;color:var(--text);
  outline:none;caret-color:var(--cyan);padding:6px 4px;border-radius:6px}
.doc:empty::before{content:attr(data-placeholder);color:var(--dim)}
.doc:focus{box-shadow:0 0 0 1px rgba(14,165,233,.35)}
.mic-btn{display:inline-flex;align-items:center;gap:6px;margin-left:auto;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.4px;color:var(--cyan);
  background:rgba(14,165,233,.10);border:1px solid rgba(14,165,233,.35);
  border-radius:999px;padding:4px 10px;cursor:pointer;
  transition:background var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.mic-btn:hover{background:rgba(14,165,233,.16)}
.mic-btn:active{transform:scale(.95)}
.mic-btn.live{background:rgba(22,163,74,.14);border-color:rgba(22,163,74,.5);color:var(--green)}
.mic-btn .rec-dot{width:6px;height:6px;border-radius:50%;background:currentColor;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:.2}}
/* floating overlay: dark HUD contrasts the light window */
.overlay{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(430px,88%);background:rgba(13,20,36,.9);border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:16px 18px;box-shadow:0 18px 50px rgba(13,20,36,.35);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  opacity:.5;pointer-events:none;
  transition:opacity var(--dur) var(--ease-out)}
.overlay.live{opacity:1}
.overlay .mic-btn{pointer-events:auto;color:#7dd3fc;background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.4)}
.overlay .mic-btn.live{color:#86efac;background:rgba(52,211,153,.15);border-color:rgba(52,211,153,.5)}
.ov-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.wave{display:flex;align-items:flex-end;gap:3px;height:22px}
.wave i{width:4px;height:100%;border-radius:2px;background:var(--grad);
  transform-origin:bottom;animation:wave 1.2s ease-in-out infinite}
.wave i:nth-child(2){animation-delay:.15s}.wave i:nth-child(3){animation-delay:.3s}
.wave i:nth-child(4){animation-delay:.45s}.wave i:nth-child(5){animation-delay:.6s}
@keyframes wave{0%,100%{transform:scaleY(.35)}50%{transform:scaleY(1)}}
.ov-text{font-size:15px;color:#e8ecf4;min-height:24px}
.ov-text .c{color:#8b93a7}
/* insert toast */
.toast{position:absolute;right:-10px;top:-16px;display:flex;align-items:center;gap:7px;
  background:linear-gradient(90deg,#0e7490,#6d28d9);color:#fff;font-size:12.5px;font-weight:600;
  padding:7px 13px;border-radius:999px;box-shadow:0 8px 24px rgba(13,20,36,.35);white-space:nowrap;
  opacity:0;transform:translateY(6px);pointer-events:none;
  transition:opacity .24s var(--ease-out),transform .24s var(--ease-out)}
.toast.show{opacity:1;transform:none}
/* floating side cards */
.float-card{position:absolute;z-index:2;display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--line-strong);border-radius:14px;
  padding:12px 16px;font-size:13.5px;box-shadow:var(--shadow-card);
  animation:float 6s ease-in-out infinite}
.float-card svg{color:var(--cyan);flex:none}
.float-card .fc-sub{display:block;font-size:11.5px;color:var(--dim)}
.float-card.f1{left:-48px;top:20%;animation-delay:0s}
.float-card.f2{right:-48px;bottom:12%;animation-delay:3s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* ===== sections ===== */
.sec{padding:64px 0}
.sec h2{margin:0 0 8px;font-size:clamp(24px,3.4vw,34px);font-weight:750;letter-spacing:-.3px;text-align:center}
.sec .sub{text-align:center;color:var(--muted);margin:0 auto 40px;max-width:620px}
.secquote{text-align:center;margin:-28px auto 40px;max-width:620px}
.secquote .grad{font-size:18px;font-weight:700;letter-spacing:.2px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* reveal on scroll (only when JS adds html.js; no-JS fully visible) */
html.js .reveal{opacity:0;transform:translateY(14px);
  transition:opacity .4s var(--ease-out),transform .4s var(--ease-out)}
html.js .reveal.in{opacity:1;transform:none}

/* trust bar */
.trust{display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:center;padding:26px 0 0;color:var(--dim);font-size:13.5px}
.trust span{display:inline-flex;align-items:center;gap:7px}
.trust svg{color:var(--green);width:16px;height:16px}
.trust a{color:var(--muted)}.trust a:hover{color:var(--cyan)}

/* why: pain → solution cards */
.whys{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-top:8px}
.why{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;position:relative;overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.why::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,#f43f5e,#f97316)}
.why:nth-child(2)::before{background:linear-gradient(90deg,#f97316,#eab308)}
.why:nth-child(3)::before{background:linear-gradient(90deg,#0ea5e9,#7c3aed)}
.why:nth-child(4)::before{background:linear-gradient(90deg,#16a34a,#0d9488)}
.why:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-pop)}
.why .w-pain{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;margin-bottom:10px}
.why .w-pain::before{content:"";width:9px;height:9px;border-radius:50%;flex:none;
  background:linear-gradient(135deg,#f43f5e,#f97316)}
.why:nth-child(2) .w-pain::before{background:linear-gradient(135deg,#f97316,#eab308)}
.why:nth-child(3) .w-pain::before{background:linear-gradient(135deg,#0ea5e9,#7c3aed)}
.why:nth-child(4) .w-pain::before{background:linear-gradient(135deg,#16a34a,#0d9488)}
.why .w-fix{margin:0;font-size:14.5px;color:var(--muted);line-height:1.75}

/* use cases */
.uses{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:8px}
.usecard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.usecard:hover{transform:translateY(-4px);border-color:rgba(124,58,237,.45);box-shadow:var(--shadow-pop)}
.usecard .ico{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(14,165,233,.12),rgba(124,58,237,.12));
  border:1px solid var(--line);margin-bottom:14px;color:var(--cyan)}
.usecard h3{margin:0 0 6px;font-size:16.5px}
.usecard p{margin:0;color:var(--muted);font-size:14px}

/* compare: local-first vs cloud transcription */
.cmp-wrap{max-width:860px;margin:0 auto;overflow-x:auto;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);
  box-shadow:var(--shadow-card)}
table.cmp{width:100%;border-collapse:collapse;min-width:640px}
.cmp th,.cmp td{padding:15px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
.cmp thead th{font-size:13px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;color:var(--muted)}
.cmp thead .c-self{color:var(--cyan)}
.cmp tbody tr:last-child th,.cmp tbody tr:last-child td{border-bottom:none}
.cmp tbody th.c-dim{color:var(--dim);font-weight:600;width:18%;white-space:nowrap}
.cmp td.c-self{background:linear-gradient(90deg,rgba(14,165,233,.08),rgba(124,58,237,.08));
  color:var(--text);font-weight:600;box-shadow:inset 3px 0 0 var(--cyan)}
.cmp thead th.c-self{background:linear-gradient(90deg,rgba(14,165,233,.1),rgba(124,58,237,.1))}
.cmp td{color:var(--muted)}

/* enterprise plan: on-prem / terminology / privacy cards */
.ent{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:8px}
.entcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;position:relative;overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out)}
.entcard::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);opacity:.9}
.entcard:nth-child(2)::before{background:linear-gradient(90deg,#16a34a,#0d9488)}
.entcard:nth-child(3)::before{background:linear-gradient(90deg,#f59e0b,#ef4444)}
.entcard:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-pop)}
.entcard .ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(14,165,233,.12),rgba(124,58,237,.12));
  border:1px solid var(--line);margin-bottom:16px;color:var(--cyan)}
.entcard h3{margin:0 0 3px;font-size:19px}
.entcard .msub{color:var(--cyan);font-size:13px;font-weight:600;letter-spacing:.4px;margin-bottom:14px}
.entcard ul{margin:0;padding:0;list-style:none}
.entcard li{position:relative;padding:4px 0 4px 22px;color:var(--muted);font-size:14px}
.entcard li::before{content:"›";position:absolute;left:4px;color:var(--cyan);font-weight:700}
.ent-cta{display:flex;justify-content:center;margin-top:28px}

/* how-it-works steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;position:relative}
.steps::before{content:"";position:absolute;top:26px;left:12%;right:12%;height:1px;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 8px,transparent 8px 16px)}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative;z-index:1;
  box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.step:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-pop)}
.step .n{width:30px;height:30px;border-radius:50%;background:var(--grad);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-bottom:12px;font-size:14px}
.step h3{margin:0 0 6px;font-size:16px}
.step p{margin:0;font-size:14px;color:var(--muted)}

/* usage modes */
.modes{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin-top:8px}
.modecard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;position:relative;overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.modecard::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;opacity:.9}
.modecard.accent-cyan::before{background:linear-gradient(90deg,#0ea5e9,#0369a1)}
.modecard.accent-violet::before{background:linear-gradient(90deg,#7c3aed,#6d28d9)}
.modecard.accent-green::before{background:linear-gradient(90deg,#16a34a,#15803d)}
.modecard:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-pop)}
.modecard:active{transform:scale(.985)}
.modecard .ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(14,165,233,.12),rgba(124,58,237,.12));
  border:1px solid var(--line);margin-bottom:16px;color:var(--cyan);
  transition:color var(--dur-fast) var(--ease-out)}
.modecard:hover .ico{color:var(--violet)}
.modecard h3{margin:0 0 3px;font-size:19px}
.modecard .msub{color:var(--cyan);font-size:13px;font-weight:600;letter-spacing:.4px;margin-bottom:14px}
.modecard ul{margin:0;padding:0;list-style:none}
.modecard li{position:relative;padding:4px 0 4px 22px;color:var(--muted);font-size:14px}
.modecard li::before{content:"›";position:absolute;left:4px;color:var(--cyan);font-weight:700}
.modecard .audience{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);color:var(--dim);font-size:13px}
.modecard .badge{position:absolute;top:18px;right:18px;font-size:11px;padding:3px 10px;border-radius:999px;
  background:var(--grad);color:#fff}

/* features bento */
.bento{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.fcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}
.fcard:hover{transform:translateY(-4px);border-color:rgba(14,165,233,.45);box-shadow:var(--shadow-pop)}
.fcard:active{transform:scale(.985)}
.fcard.large{grid-column:span 2}
.fcard .ico{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(14,165,233,.12),rgba(124,58,237,.12));
  border:1px solid var(--line);margin-bottom:14px;color:var(--cyan)}
.fcard h3{margin:0 0 6px;font-size:16.5px}
.fcard p{margin:0;color:var(--muted);font-size:14px}
.pipeline{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.pipeline .step{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;color:var(--muted);
  background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:4px 10px;
  transition:color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.pipeline .step.on{color:var(--cyan);border-color:rgba(14,165,233,.45)}
.pipeline .step i{width:5px;height:5px;border-radius:50%;background:currentColor}
.cliprows{margin-top:16px;display:flex;flex-direction:column;gap:7px}
.cliprows .row{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);
  background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:8px 12px}
.cliprows .row b{color:var(--text);font-weight:600}
.cliprows .row .hit{color:var(--cyan)}
.cliprows .row .k{margin-left:auto;font-family:var(--font-mono);font-size:11px;color:var(--dim)}

/* voice philosophy */
.voice{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.qcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;text-align:center;box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.qcard:hover{transform:translateY(-4px);border-color:rgba(124,58,237,.45);box-shadow:var(--shadow-pop)}
.qcard .qlayer{display:inline-block;font-size:11.5px;color:var(--violet);font-weight:600;
  letter-spacing:.4px;border:1px solid rgba(124,58,237,.3);background:rgba(124,58,237,.07);
  padding:3px 12px;border-radius:999px;margin-bottom:16px}
.qcard .qslogan{font-size:17px;font-weight:700;letter-spacing:-.2px}
.qcard .qzh{margin-top:8px;color:var(--muted);font-size:14px}

/* download / model cards */
.dgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px}
.dcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  position:relative;box-shadow:var(--shadow-card);
  transition:transform var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out)}
.dcard:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-pop)}
.dcard.highlight{border-color:rgba(14,165,233,.6);box-shadow:0 0 0 1px rgba(14,165,233,.35),0 12px 34px rgba(14,165,233,.15)}
.dcard .os{font-size:13px;color:var(--cyan);font-weight:600;letter-spacing:.4px;text-transform:uppercase}
.dcard h3{margin:6px 0 2px;font-size:22px;word-break:break-word}
.dcard .arch{color:var(--muted);font-size:14px}
.dcard .note{color:var(--dim);font-size:12.5px;margin:10px 0 16px;min-height:18px}
.dcard .meta{display:flex;gap:14px;font-family:var(--font-mono);font-size:12.5px;color:var(--muted);
  border-top:1px solid var(--line);padding-top:14px;margin-bottom:18px;flex-wrap:wrap}
.dcard .meta b{color:var(--text);font-weight:600}
.dbtn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:12px;border-radius:11px;
  font-weight:600;font-size:15px;background:var(--grad);color:#fff;border:none;cursor:pointer;position:relative;overflow:hidden;
  transition:transform var(--dur-fast) var(--ease-out),filter var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out)}
.dbtn::after{content:"";position:absolute;top:0;left:-80%;width:50%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.28),transparent);
  transform:skewX(-20deg);transition:left .5s var(--ease-in-out)}
.dbtn:hover{filter:brightness(1.06);box-shadow:0 10px 26px rgba(14,165,233,.28)}
.dbtn:hover::after{left:130%}
.dbtn:active{transform:scale(.97)}
.dbtn.soon{background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}
.dbtn.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--line)}
.badge{position:absolute;top:-11px;right:18px;font-size:11px;padding:3px 10px;border-radius:999px;
  background:var(--grad);color:#fff;border:1px solid rgba(255,255,255,.4)}
.tag{display:inline-block;font-size:11px;color:var(--green);border:1px solid rgba(22,163,74,.35);
  background:rgba(22,163,74,.08);border-radius:999px;padding:2px 8px;margin-left:8px;vertical-align:2px}

/* changelog */
.changelog{max-width:760px;margin:0 auto}
.rel{border-left:2px solid var(--line-strong);padding:0 0 26px 22px;position:relative}
.rel::before{content:"";position:absolute;left:-6px;top:5px;width:10px;height:10px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 10px rgba(14,165,233,.4);
  transform:scale(.4);opacity:0;transition:transform .3s var(--ease-out),opacity .3s var(--ease-out)}
.rel.in::before{transform:scale(1);opacity:1}
.rel .v{font-family:var(--font-mono);font-weight:700;font-size:16px}
.rel .date{color:var(--dim);font-size:13px;margin-left:10px;font-family:var(--font-mono)}
.rel ul{margin:8px 0 0;padding-left:20px;color:var(--muted)}
.rel li{margin:2px 0}
.rel .kind{display:inline-block;font-size:11px;margin-right:6px;padding:1px 7px;border-radius:6px}
.rel .kind.feat{background:rgba(14,165,233,.12);color:var(--cyan)}
.rel .kind.fix{background:rgba(22,163,74,.12);color:var(--green)}

/* pro benefits */
.pro{background:linear-gradient(180deg,rgba(124,58,237,.08),var(--surface) 60%);
  border:1px solid var(--line);border-radius:20px;padding:40px 32px;text-align:center;box-shadow:var(--shadow-card)}
.pro h2{margin:0 0 8px;font-size:clamp(24px,3.4vw,32px);font-weight:750}
.pro .sub{color:var(--muted);margin:0 auto 26px;max-width:560px}
.pro .points{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:22px}
.pro .points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);
  background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:7px 14px}
.pro .points svg{color:var(--green);width:16px;height:16px;flex:none}
.pro .payments{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:26px;color:var(--dim);font-size:13px}
.pro .payments span{font-family:var(--font-mono)}

/* faq */
.faqs{max-width:760px;margin:0 auto}
details{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden;
  box-shadow:var(--shadow-card)}
summary{cursor:pointer;padding:16px 20px;font-weight:600;font-size:15.5px;list-style:none;
  display:flex;align-items:center;gap:10px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:auto;color:var(--cyan);font-size:20px;font-weight:400;
  transition:transform var(--dur-fast) var(--ease-out)}
details[open] summary::after{transform:rotate(45deg)}
details .a{padding:0 20px 16px;color:var(--muted);font-size:14.5px}

/* cta band */
.cta-band{margin:20px auto 0;padding:48px 32px;text-align:center;border-radius:22px;
  background:linear-gradient(135deg,rgba(14,165,233,.10),rgba(124,58,237,.12));
  border:1px solid var(--line-strong);position:relative;overflow:hidden;box-shadow:var(--shadow-card)}
.cta-band h2{margin:0 0 10px;font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:-.3px}
.cta-band p{color:var(--muted);margin:0 auto 26px;max-width:520px}

/* footer */
footer{border-top:1px solid var(--line);padding:40px 0 44px;margin-top:40px;background:rgba(255,255,255,.6)}
.foot-inner{display:flex;gap:40px;flex-wrap:wrap;justify-content:space-between}
.foot-brand{font-weight:700;margin-bottom:6px}
.foot-brand .dot{display:inline-block;width:14px;height:14px;border-radius:5px;background:var(--grad);
  vertical-align:-2px;margin-right:8px}
.foot-tag{color:var(--muted);font-size:13.5px}
.foot-col h4{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}
.foot-col a{display:block;font-size:14px;margin-bottom:6px;color:var(--muted)}
.foot-col a:hover{color:var(--cyan)}
.foot-license{margin-top:28px;font-size:12px;color:var(--dim)}

/* ===== responsive ===== */
@media(min-width:941px){
  .nav-cta{display:inline-flex;margin-left:4px}
}
@media(max-width:940px){
  .hero .wrap{grid-template-columns:1fr;gap:44px}
  .hero-copy{text-align:center}
  .hero h1{max-width:100%}
  .hero .sub{margin-left:auto;margin-right:auto}
  .hero .cta-row{justify-content:center}
  .stage{max-width:600px;margin:0 auto}
  .float-card.f1{left:-20px}.float-card.f2{right:-20px}
}
@media(max-width:640px){
  .hero{padding:56px 0 48px}
  .top nav{order:3;width:100%;margin:0}
  .float-card{display:none}
  .toast{right:8px;top:-14px}
  .fcard.large{grid-column:span 1}
  .steps::before{display:none}
}

/* ===== reduced motion ===== */
@media (prefers-reduced-motion:reduce){
  html.js .reveal{opacity:1;transform:none;transition:opacity .2s ease}
  .hero .hi{animation-duration:.2s;animation-delay:0s}
  .wave i,.float-card{animation:none}
  html{scroll-behavior:auto!important}
  *{transition-duration:.01ms!important}
}