/* ============ Design tokens ============ */
:root{
  --bg:#07080b;
  --bg-2:#0c0e14;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.075);
  --stroke:rgba(255,255,255,.085);
  --stroke-2:rgba(255,255,255,.15);
  --text:#f5f6f8;
  --muted:#a4a9b6;
  --faint:#727986;
  --accent:#f0531e;
  --accent-2:#ff7a45;
  --accent-soft:rgba(240,83,30,.13);
  --ok:#43dfa0;

  --maxw:1200px;
  --r-lg:22px;
  --r-md:15px;
  --r-sm:11px;

  --f-display:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --f-body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --step-hero:clamp(2.7rem,1.2rem + 6.2vw,5.6rem);
  --step-h2:clamp(1.9rem,1.2rem + 2.7vw,3.2rem);
  --step-h3:clamp(1.08rem,1rem + .45vw,1.3rem);
  --lede:clamp(1.04rem,.98rem + .38vw,1.28rem);

  --space-sec:clamp(4.5rem,3.4rem + 5vw,8rem);
  --ease:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--f-body);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;line-height:1.06;letter-spacing:-.02em;margin:0}
a{color:inherit;text-decoration:none}
img,svg{display:block}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:.6rem 1rem;border-radius:0 0 10px 0;z-index:100}
.skip:focus{left:0}

/* ============ Atmosphere ============ */
.atmosphere{position:fixed;inset:0;z-index:-1;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(100px);opacity:.5;will-change:transform}
.orb-a{width:640px;height:640px;top:-240px;right:-140px;
  background:radial-gradient(circle,rgba(240,83,30,.5),transparent 62%);
  animation:drift 24s var(--ease) infinite alternate}
.orb-b{width:560px;height:560px;bottom:-220px;left:-180px;
  background:radial-gradient(circle,rgba(60,100,255,.24),transparent 64%);
  animation:drift 28s var(--ease) infinite alternate-reverse}
.grid-veil{position:absolute;inset:0;opacity:.45;
  background-image:linear-gradient(var(--stroke) 1px,transparent 1px),linear-gradient(90deg,var(--stroke) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 55% at 50% 0%,#000 18%,transparent 72%)}
@keyframes drift{to{transform:translate3d(36px,46px,0) scale(1.12)}}

/* ============ Nav ============ */
.nav{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin:0 auto;padding:1rem 1.5rem;backdrop-filter:blur(16px)}
.nav::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(7,8,11,.85),transparent);border-bottom:1px solid var(--stroke)}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--f-display);font-weight:600;font-size:1.05rem}
.brand-mark{filter:drop-shadow(0 3px 12px rgba(240,83,30,.35))}
.brand-pro{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:1.9rem}
.nav-links a{color:var(--muted);font-size:.94rem;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{padding:.5rem 1.05rem;border:1px solid var(--stroke-2);border-radius:999px;color:var(--text)!important}
.nav-cta:hover{background:var(--surface);border-color:var(--accent)}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-weight:600;font-size:.98rem;
  padding:.82rem 1.4rem;border-radius:999px;cursor:pointer;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,border-color .25s;will-change:transform}
.btn.lg{padding:1rem 1.7rem;font-size:1.04rem}
.btn svg{fill:currentColor}
.btn-primary{background:linear-gradient(135deg,var(--accent-2),var(--accent));color:#fff;
  box-shadow:0 10px 30px -8px rgba(240,83,30,.6),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 42px -10px rgba(240,83,30,.72)}
.btn-ghost{background:var(--surface);border-color:var(--stroke-2);color:var(--text)}
.btn-ghost:hover{background:var(--surface-2);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--stroke-2);color:var(--text);padding:.7rem 1.2rem;font-size:.9rem}
.btn-outline:hover{border-color:var(--accent);color:var(--accent-2)}

/* ============ Hero ============ */
.hero{max-width:var(--maxw);margin:0 auto;padding:clamp(2.5rem,1.5rem + 4vw,5rem) 1.5rem 3.5rem;
  display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;color:var(--muted);font-weight:500;font-size:.88rem;
  background:var(--surface);border:1px solid var(--stroke);padding:.4rem .85rem;border-radius:999px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(67,223,160,.16)}
h1{font-size:var(--step-hero);margin:1.3rem 0 0;font-weight:700}
.grad{background:linear-gradient(120deg,var(--accent-2),var(--accent) 62%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{color:var(--muted);font-size:var(--lede);max-width:35ch;margin:1.4rem 0 2rem}
.cta-row{display:flex;flex-wrap:wrap;gap:.85rem}
.cta-row.center{justify-content:center}
.trust-row{display:flex;flex-wrap:wrap;gap:1.3rem;list-style:none;padding:0;margin:2.1rem 0 0;color:var(--faint);font-size:.9rem}
.trust-row li{position:relative;padding-left:1.05rem;font-weight:500}
.trust-row li::before{content:"";position:absolute;left:0;top:.5em;width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* Phone mockup */
.hero-visual{position:relative;display:grid;place-items:center}
.phone{position:relative;width:min(320px,82vw);aspect-ratio:9/19.3;border-radius:46px;
  background:linear-gradient(160deg,#20232c,#0b0d12);border:1px solid var(--stroke-2);padding:11px;
  box-shadow:0 50px 90px -34px rgba(0,0,0,.92),0 0 0 1px rgba(255,255,255,.03),inset 0 1px 0 rgba(255,255,255,.07);
  animation:floaty 7s ease-in-out infinite}
@keyframes floaty{50%{transform:translateY(-13px)}}
.phone-notch{position:absolute;top:15px;left:50%;transform:translateX(-50%);width:98px;height:27px;background:#000;border-radius:0 0 17px 17px;z-index:2}
.phone-screen{height:100%;border-radius:36px;background:radial-gradient(130% 65% at 50% 0,#15171f,#0a0b10);
  padding:2.5rem .75rem 1rem;overflow:hidden;display:flex;flex-direction:column;gap:.55rem}
.app-head{display:flex;align-items:center;justify-content:space-between;padding:.2rem .45rem .55rem}
.app-title{font-family:var(--f-display);font-weight:600;font-size:1.12rem}
.app-search{width:30px;height:30px;border-radius:50%;background:var(--accent-soft);border:1px solid var(--stroke)}
.code-card{display:flex;align-items:center;gap:.65rem;padding:.62rem .7rem;border-radius:14px;
  background:var(--surface);border:1px solid var(--stroke)}
.code-card.featured{background:linear-gradient(150deg,var(--accent-soft),var(--surface));border-color:rgba(240,83,30,.32)}
.code-card.ghost{opacity:.55}
.ci{width:34px;height:34px;border-radius:9px;flex:none;object-fit:cover;background:#fff}
.ci-meta{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.ci-meta b{font-size:.88rem;font-weight:600}
.ci-meta span{font-size:.71rem;color:var(--faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.code{margin-left:auto;display:flex;align-items:center;gap:.45rem}
.digits{font-family:var(--f-display);font-weight:600;letter-spacing:.05em;font-variant-numeric:tabular-nums;font-size:1.1rem;color:var(--accent-2);white-space:nowrap}
.code-card.featured .ci-meta{max-width:96px}
.digits.sm{margin-left:auto;font-size:.98rem;color:var(--text)}
.ring{width:24px;height:24px}
.ring svg{transform:rotate(-90deg)}
.ring-bg{fill:none;stroke:var(--stroke-2);stroke-width:3}
.ring-fg{fill:none;stroke:var(--accent);stroke-width:3;stroke-linecap:round;stroke-dasharray:82;stroke-dashoffset:22;
  animation:countdown 8s linear infinite}
@keyframes countdown{from{stroke-dashoffset:0}to{stroke-dashoffset:82}}
.pk-tag{margin-left:auto;display:grid;place-items:center;width:30px;height:30px;border-radius:8px;color:var(--accent-2);background:var(--accent-soft);border:1px solid rgba(240,83,30,.28)}
.float-badge{position:absolute;display:flex;align-items:center;gap:.4rem;font-size:.8rem;font-weight:600;
  padding:.48rem .78rem;border-radius:999px;background:rgba(12,14,20,.82);backdrop-filter:blur(10px);
  border:1px solid var(--stroke-2);box-shadow:0 14px 32px -14px rgba(0,0,0,.85);color:var(--text)}
.float-badge svg{color:var(--accent-2)}
.badge-lock{top:13%;left:-5%;animation:floaty 7s ease-in-out infinite .8s}
.badge-sync{bottom:15%;right:-7%;animation:floaty 7s ease-in-out infinite 1.6s}
.badge-sync svg{color:var(--ok)}

/* ============ Sections shell ============ */
.section{max-width:var(--maxw);margin:0 auto;padding:var(--space-sec) 1.5rem}
.section-head{max-width:640px;margin:0 auto clamp(2.4rem,1.8rem + 2vw,3.6rem);text-align:center}
.kicker{color:var(--accent-2);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.16em;margin:0 0 .85rem}
h2{font-size:var(--step-h2)}
.sub{color:var(--muted);font-size:var(--lede);margin:1rem 0 0}

/* ============ Footer ============ */
.footer{max-width:var(--maxw);margin:0 auto;padding:3rem 1.5rem 4rem;display:grid;grid-template-columns:1.4fr 2fr;gap:2.5rem;border-top:1px solid var(--stroke)}
.foot-brand{display:flex;flex-direction:column;gap:.4rem}
.foot-brand .brand-mark{margin-bottom:.3rem}
.foot-brand .brand-name{font-family:var(--f-display);font-weight:600;font-size:1.1rem}
.foot-brand p{color:var(--faint);font-size:.9rem;margin:.2rem 0 0;max-width:26ch}
.foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.foot-cols h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--faint);margin:0 0 1rem;font-family:var(--f-body)}
.foot-cols a{display:block;color:var(--muted);font-size:.92rem;padding:.28rem 0;transition:color .2s}
.foot-cols a:hover{color:var(--accent-2)}
.foot-legal{grid-column:1/-1;color:var(--faint);font-size:.8rem;margin:1rem 0 0;border-top:1px solid var(--stroke);padding-top:1.5rem;max-width:70ch}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ Responsive (core) ============ */
@media(max-width:900px){
  .hero{grid-template-columns:1fr;text-align:center;gap:2.5rem}
  .lede{margin-inline:auto}
  .cta-row,.trust-row{justify-content:center}
  .hero-visual{order:-1}
  .footer{grid-template-columns:1fr;gap:2rem}
}
@media(max-width:620px){
  body{font-size:16px}
  .nav-links a:not(.nav-cta){display:none}
  .foot-cols{grid-template-columns:repeat(2,1fr)}
  .float-badge{font-size:.74rem}
  .badge-lock{left:-2%}.badge-sync{right:-2%}
}

/* ============ Motion / a11y ============ */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px}