:root{
  --bg:#070A0E;
  --ink:#0A0F14;
  --surface:#121A21;
  --surface2:#26323D;
  --mint:#34E1C4;
  --mint-soft:rgba(52,225,196,.16);
  --text:#EAF2F1;
  --muted:#9DAEBB;
  --dim:#8A98A3;
  --ph:clamp(420px, 64dvh, 640px);          /* phone SCREEN height — dvh fits real mobile viewports */
  --radius-screen:42px;
  --radius-frame:54px;
  --ease:cubic-bezier(.22,.61,.36,1);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html{height:100%}
body{
  min-height:100dvh;background:var(--bg);color:var(--text);
  display:grid;place-items:center;overflow-x:hidden;
  padding:clamp(16px,4vw,48px);line-height:1.5;
}
.bg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(55% 45% at 78% 18%, rgba(52,225,196,.16), transparent 70%),
    radial-gradient(45% 40% at 12% 88%, rgba(124,140,248,.12), transparent 70%),
    radial-gradient(40% 30% at 90% 92%, rgba(52,225,196,.06), transparent 70%);}

/* ---- layout ---- */
.hero{
  position:relative;z-index:1;width:100%;max-width:1060px;
  display:grid;align-items:center;gap:clamp(20px,4vw,56px);
  grid-template-columns:1.05fr .95fr;
  grid-template-areas:"intro device" "controls device";
}
.intro{grid-area:intro;align-self:end;animation:rise .7s .04s var(--ease) backwards}
.controls{grid-area:controls;align-self:start;animation:rise .7s .22s var(--ease) backwards}
.device{grid-area:device;display:grid;place-items:center;animation:rise .85s .12s var(--ease) backwards}

/* ---- intro / copy ---- */
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:14px;letter-spacing:.02em;color:var(--text)}
.brand__dot{width:11px;height:11px;border-radius:50%;background:var(--mint);box-shadow:0 0 16px 1px var(--mint);animation:dot 3s ease-in-out infinite}
.title{margin:14px 0 12px;font-weight:800;letter-spacing:-.025em;line-height:1.04;font-size:clamp(30px,4.6vw,48px);color:var(--text)}
.title span{color:var(--mint)}
.lede{color:var(--muted);font-size:clamp(15px,1.6vw,18px);max-width:42ch}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chips li{font-size:12.5px;color:var(--text);background:var(--surface);border:1px solid var(--surface2);padding:6px 12px;border-radius:999px}

/* ---- phone (frame hugs a screen whose ratio matches the art exactly → no crop) ---- */
.phone{position:relative;display:inline-block}
.phone__glow{position:absolute;inset:-14% -10%;z-index:-1;border-radius:50%;
  background:radial-gradient(closest-side,var(--mint-soft),transparent 75%);filter:blur(10px);animation:glowBreathe 6s ease-in-out infinite}
.phone__frame{
  position:relative;display:inline-block;padding:11px;border-radius:var(--radius-frame);
  background:linear-gradient(145deg,#2c333a,#0d1116 40%,#171c22 60%,#3a424a);
  box-shadow:0 1px 0 rgba(255,255,255,.10) inset,0 0 0 2px #05080b,0 50px 90px -25px rgba(0,0,0,.85),0 14px 34px -12px rgba(0,0,0,.7);
  transition:transform .3s var(--ease);will-change:transform;transform-style:preserve-3d}
.phone__screen{position:relative;height:var(--ph);aspect-ratio:402/874;width:auto;
  border-radius:var(--radius-screen);overflow:hidden;background:var(--ink);box-shadow:0 0 0 2px #000 inset}
.screen__img{display:block;width:100%;height:100%;object-fit:cover;user-select:none;
  transition:opacity .26s ease,transform .26s ease,filter .26s ease}
.screen__img.is-swapping{opacity:0;transform:scale(1.02);filter:blur(7px)}
.phone__island{position:absolute;top:13px;left:50%;transform:translateX(-50%);width:32%;height:26px;background:#000;border-radius:20px;z-index:3;box-shadow:0 0 0 1px rgba(255,255,255,.04)}
.phone__side{position:absolute;background:#23282e;border-radius:3px;z-index:0}
.phone__side--power{right:-3px;top:30%;width:3px;height:11%}
.phone__side--vol1{left:-3px;top:24%;width:3px;height:7%}
.phone__side--vol2{left:-3px;top:34%;width:3px;height:11%}
.hotspots{position:absolute;inset:0;z-index:4}
.hotspot{position:absolute;min-height:26px;border-radius:12px;cursor:pointer;border:1.5px solid transparent;background:transparent;
  transition:border-color .2s,background .2s,box-shadow .2s;animation:pulse 2.6s ease-in-out infinite}
.hotspot:hover,.hotspot:focus-visible{border-color:var(--mint);background:var(--mint-soft);box-shadow:0 0 18px -2px var(--mint);outline:none}
.hotspot.tap{animation:tap .4s ease}

/* ---- controls ---- */
.screenmeta{font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);margin-bottom:14px}
.screenmeta .sname{color:var(--text)}
.screenmeta .sep{margin:0 8px;opacity:.6}
.navrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.nav{width:42px;height:42px;border-radius:50%;border:1px solid var(--surface2);background:rgba(18,26,33,.7);color:var(--text);
  font-size:24px;line-height:1;cursor:pointer;flex:none;display:grid;place-items:center;transition:border-color .2s,color .2s,transform .1s}
.nav:hover{border-color:var(--mint);color:var(--mint)}
.nav:active{transform:scale(.93)}
.rail{display:flex;gap:8px;flex-wrap:wrap}
.thumb{width:42px;aspect-ratio:402/874;border-radius:8px;overflow:hidden;cursor:pointer;border:2px solid transparent;background:var(--surface);opacity:.5;
  transition:opacity .2s,border-color .2s,transform .15s}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb:hover{opacity:.85;transform:translateY(-2px)}
.thumb.active{opacity:1;border-color:var(--mint);box-shadow:0 0 14px -3px var(--mint)}
.hint{margin-top:16px;color:var(--muted);font-size:13px}
.hint em{color:var(--mint);font-style:normal}
.hint kbd{font:inherit;border:1px solid var(--surface2);border-radius:5px;padding:0 5px;color:var(--text)}
.meta{margin-top:8px;color:var(--dim);font-size:12px}
.link{background:none;border:none;color:var(--mint);cursor:pointer;font:inherit;text-decoration:underline;padding:0}
.link:hover{opacity:.8}
.nav:focus-visible,.thumb:focus-visible,.link:focus-visible{outline:2px solid var(--mint);outline-offset:3px}

/* ---- responsive ---- */
@media (max-width:880px){
  .hero{grid-template-columns:1fr;grid-template-areas:"intro" "device" "controls";gap:clamp(18px,5vw,28px);text-align:center;justify-items:center}
  .intro,.controls{align-self:auto}
  .lede{max-width:48ch}
  .chips,.navrow{justify-content:center}
  .hint .kbd-hint{display:none}
  :root{--ph:clamp(360px,54dvh,520px)}
}
@media (max-width:380px){:root{--ph:clamp(320px,48dvh,440px)}}

/* ---- keyframes (content visible by default; these only enhance) ---- */
@keyframes rise{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@keyframes glowBreathe{0%,100%{opacity:.7;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}
@keyframes dot{0%,100%{box-shadow:0 0 16px 1px var(--mint)}50%{box-shadow:0 0 24px 4px var(--mint)}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(52,225,196,0)}50%{box-shadow:0 0 0 3px rgba(52,225,196,.18)}}
@keyframes tap{0%{transform:scale(1)}40%{transform:scale(.97)}100%{transform:scale(1)}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .phone__frame{transform:none!important}
}