:root{
  --color-black:#000;--color-dark-gray:#2B2B2B;--color-coral:#FF4D4D;
  --color-coral-hover:#FF6B6B;--color-coral-active:#FF3B3B;--color-white:#fff;
  --color-muted:#B8B8B8;
  --font-display:"Fraunces",Georgia,"Times New Roman",serif;
  --font-body:"DM Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-padding-top:80px}
body{margin:0;background:var(--color-black);color:var(--color-white);
  font-family:var(--font-body);font-size:1.0625rem;line-height:1.6;
  -webkit-text-size-adjust:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--color-coral);outline-offset:3px;border-radius:4px}

/* NAV */
.nav{position:sticky;top:0;z-index:10;background:var(--color-dark-gray);
  display:flex;align-items:center;justify-content:space-between;
  padding:14px clamp(16px,4vw,40px)}
.nav-title{font-family:var(--font-display);font-size:1.5rem;font-weight:700;
  text-decoration:none;-webkit-tap-highlight-color:transparent}
.nav-title:hover{color:var(--color-coral)}
.nav-links{display:none;gap:32px}
.nav-item{text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
.nav-item:hover{color:var(--color-coral-hover)}
.nav-item[aria-current="page"]{border-bottom-color:var(--color-coral)}
.hamburger{background:none;border:0;color:var(--color-white);font-size:1.75rem;
  line-height:1;padding:6px 10px;cursor:pointer}
.hamburger:hover{background:none;color:var(--color-coral-hover)}
.mobile-menu{display:none;background:var(--color-dark-gray);
  padding:4px clamp(16px,4vw,40px) 14px;border-top:1px solid #444}
.mobile-menu.nav-open{display:block}
.mobile-menu a{display:block;padding:12px 0;text-decoration:none}
.mobile-menu a:hover{color:var(--color-coral-hover)}
.mobile-menu a[aria-current="page"]{display:none}
@media (min-width:801px){
  .nav-links{display:flex}
  .hamburger,.mobile-menu{display:none!important}
}

/* LAYOUT */
main{max-width:1000px;margin:0 auto;padding:0 clamp(16px,4vw,40px)}
h1,h2{font-family:var(--font-display);line-height:1.1;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(2.5rem,8vw,5.25rem);letter-spacing:-.02em}
h2{font-size:clamp(1.6rem,4vw,2.25rem)}
p{max-width:62ch;margin:0 0 1em}
.lead{font-size:1.25rem;color:var(--color-muted)}

/* HERO */
.hero{position:relative;padding:clamp(56px,12vw,140px) 0 clamp(48px,8vw,96px);overflow:hidden}
.hero-art{position:absolute;right:-4%;top:50%;transform:translateY(-50%);
  width:min(640px,90vw);height:auto;color:var(--color-coral);opacity:.35;pointer-events:none}
.hero-art line{stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.4s ease-out forwards}
.hero-art line:nth-child(2){animation-delay:.2s}.hero-art line:nth-child(3){animation-delay:.4s}
.hero-art line:nth-child(4){animation-delay:.6s}.hero-art line:nth-child(5){animation-delay:.8s}
@keyframes draw{to{stroke-dashoffset:0}}
.hero>*:not(.hero-art){position:relative}
@media (prefers-reduced-motion:reduce){.hero-art line{animation:none;stroke-dashoffset:0}}

/* PANEL */
.panel{background:var(--color-dark-gray);border-left:4px solid var(--color-coral);
  padding:clamp(20px,4vw,36px);margin:0 0 64px}
.panel p:last-child{margin-bottom:0}
.page{padding:clamp(40px,8vw,88px) 0 64px}

/* FORM + BUTTONS */
button,.myButton{-webkit-appearance:none;appearance:none;font:inherit;font-weight:600}
.myButton{display:inline-block;background:var(--color-coral);color:var(--color-black);
  border:0;border-radius:999px;padding:12px 28px;text-decoration:none;cursor:pointer}
.myButton:hover{background:var(--color-coral-hover)}
.myButton:active{background:var(--color-coral-active)}
.footer{max-width:1000px;margin:0 auto;padding:24px clamp(16px,4vw,40px) 40px;
  color:var(--color-muted);font-size:.9rem;border-top:1px solid var(--color-dark-gray)}

/* CARDS */
.cards{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin:0 0 64px;padding:0;list-style:none}
.card{background:var(--color-dark-gray);padding:24px;border-top:4px solid var(--color-coral)}
.card h3{font-family:var(--font-display);font-size:1.4rem;margin:0 0 .4em}
.card p{margin:0;color:var(--color-muted)}
.badge{display:inline-block;border:1px solid var(--color-coral);color:var(--color-coral);
  border-radius:999px;padding:4px 14px;font-size:.85rem;margin-bottom:20px;letter-spacing:.04em;text-transform:uppercase}

/* MOTION */
.rot{color:var(--color-coral)}
.caret{display:inline-block;width:.07em;height:.8em;margin-left:.06em;background:var(--color-coral);vertical-align:-.05em;animation:blink 1s steps(2,start) infinite}
@keyframes blink{to{visibility:hidden}}
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
.cards .reveal:nth-child(2){transition-delay:.1s}.cards .reveal:nth-child(3){transition-delay:.2s}.cards .reveal:nth-child(4){transition-delay:.3s}
.sync{display:flex;align-items:center;justify-content:center;margin:32px 0 72px}
.phone,.laptop{border:2px solid var(--color-white);display:flex;flex-direction:column;gap:12px;flex:none}
.phone{width:84px;height:150px;border-radius:18px;padding:22px 12px}
.laptop{width:min(230px,42vw);height:150px;border-radius:10px;padding:22px 18px}
.bar{height:6px;border-radius:3px;background:#555}
.bar.hot{background:var(--color-coral)}
.laptop .bar.hot{transform-origin:left;animation:fill 3.2s ease-in-out infinite}
.link{position:relative;flex:1;min-width:40px;max-width:220px;height:2px;margin:0 14px;
  background:repeating-linear-gradient(90deg,#555 0 6px,transparent 6px 12px)}
.dot{position:absolute;top:50%;left:0;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;
  background:var(--color-coral);box-shadow:0 0 16px var(--color-coral);animation:travel 3.2s ease-in-out infinite}
@keyframes travel{0%{left:0}45%,55%{left:100%}100%{left:0}}
@keyframes fill{0%,35%{transform:scaleX(.15)}55%,90%{transform:scaleX(1)}100%{transform:scaleX(.15)}}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}.dot,.caret,.laptop .bar.hot{animation:none}}

/* HERO ART: connected nodes */
.hero-art circle{fill:currentColor;stroke:none;transform-box:fill-box;transform-origin:center;animation:pulse 4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.4;transform:scale(1)}50%{opacity:1;transform:scale(1.6)}}
@media (prefers-reduced-motion:reduce){.hero-art circle{animation:none}}

/* RESPONSIVE: phone, tablet, desktop */
.nav{padding-top:max(14px,env(safe-area-inset-top));
  padding-left:max(clamp(16px,4vw,40px),env(safe-area-inset-left));
  padding-right:max(clamp(16px,4vw,40px),env(safe-area-inset-right))}
.mobile-menu{padding-left:max(clamp(16px,4vw,40px),env(safe-area-inset-left));
  padding-right:max(clamp(16px,4vw,40px),env(safe-area-inset-right))}
main{padding-left:max(clamp(16px,4vw,40px),env(safe-area-inset-left));
  padding-right:max(clamp(16px,4vw,40px),env(safe-area-inset-right))}
.footer{padding-bottom:max(40px,calc(env(safe-area-inset-bottom) + 16px))}
.hamburger{min-width:44px;min-height:44px}
.mobile-menu a{padding:14px 0}
.cards{grid-template-columns:repeat(2,1fr)}
img,svg{max-width:100%}

@media (max-width:520px){
  .cards{grid-template-columns:1fr}
  .hero{padding-top:48px}
  .hero-art{right:-30%;width:120vw;opacity:.2}
  .lead{font-size:1.125rem}
  .hero .myButton,.panel .myButton{display:block;text-align:center}
  .sync{margin-bottom:48px}
  .phone{width:68px;height:124px;padding:18px 10px}
  .laptop{height:124px;padding:18px 14px}
}
@media (min-width:521px) and (max-width:1000px){
  .hero-art{width:min(520px,60vw);opacity:.3}
}
@media (min-width:1000px){
  .cards{grid-template-columns:repeat(4,1fr)}
}
@media (min-width:1200px){
  main,.footer{max-width:1120px}
  body{font-size:1.125rem}
}
@media (max-height:500px) and (orientation:landscape){
  .hero{padding:36px 0 40px}
  .page{padding-top:32px}
}

/* NAV LOGO */
.nav-title{display:inline-flex;align-items:center;gap:10px}
.nav-logo{width:30px;height:30px;flex:none}

/* MOBILE MENU FIX: dropdown lives inside the sticky nav */
.mobile-menu{position:absolute;left:0;right:0;top:100%;z-index:11;box-shadow:0 14px 24px #000a}
.hamburger{-webkit-tap-highlight-color:transparent;touch-action:manipulation;cursor:pointer}
.mobile-menu a{-webkit-tap-highlight-color:transparent}