/* sd auto — one-page static site
   Minimal dependencies, high performance, accessible contrast.
*/

:root{
  --bg: #0b0f14;
  --panel: rgba(255,255,255,.06);
  --panel-2: rgba(255,255,255,.08);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --border: rgba(255,255,255,.12);
  --shadow: 0 18px 60px rgba(0,0,0,.45);
  --radius: 18px;
  --radius-sm: 14px;
  --max: 1100px;
  --gap: 18px;
  --focus: rgba(255,255,255,.85);
  --accent: #6ee7ff;
  --accent-2: #a78bfa;
}

*{ box-sizing: border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 10% -10%, rgba(110,231,255,.18), transparent 55%),
    radial-gradient(900px 600px at 90% 5%, rgba(167,139,250,.18), transparent 55%),
    radial-gradient(1000px 800px at 50% 110%, rgba(110,231,255,.10), transparent 60%),
    var(--bg);
  line-height: 1.55;
}

a{ color: inherit; }
img{ max-width: 100%; height:auto; }

.container{
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.topbar{
  position: sticky;
  top:0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  color: rgba(0,0,0,.78);
  border-bottom: 1px solid rgba(0,0,0,.10);
  backdrop-filter: blur(10px);
}
.topbar__inner{
  display:flex;
  gap: 14px;
  align-items:center;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 13px;
}
.topbar__text{ letter-spacing: .2px; }
.topbar__link{
  color: rgba(0,0,0,.78);
  text-decoration: none;
  border-bottom: 1px dotted rgba(0,0,0,.35);
}
.topbar__link:hover{ border-bottom-style: solid; }

.site-header{
  position: sticky;
  top: 33px; /* sits below topbar */
  z-index: 40;
  border-bottom: 1px solid var(--border);
  background: rgba(11,15,20,.75);
  backdrop-filter: blur(12px);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  text-decoration:none;
  min-width: 160px;
}
.brand__mark{
  width: 14px;
  height: 14px;
  border-radius: 5px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,.9), rgba(255,255,255,0) 60%),
    linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 22px rgba(0,0,0,.35);
}
.brand__name{
  font-weight: 700;
  letter-spacing: .2px;
}

.nav{
  display:flex;
  align-items:center;
  gap: 8px;
}
.nav__link{
  text-decoration:none;
  padding: 10px 12px;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid transparent;
}
.nav__link:hover{
  color: var(--text);
  border-color: var(--border);
  background: rgba(255,255,255,.04);
}
.nav__link.is-active{
  color: var(--text);
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.16);
}

.nav__cta{
  margin-left: 6px;
  text-decoration:none;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: var(--text);
}
.nav__cta:hover{
  background: rgba(255,255,255,.10);
}

.nav-toggle{
  display:none;
  background: transparent;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 12px;
  padding: 10px;
  cursor: pointer;
}
.nav-toggle:focus-visible{ outline: 2px solid var(--focus); outline-offset: 2px; }
.nav-toggle__bar{
  display:block;
  width: 22px;
  height: 2px;
  background: rgba(255,255,255,.85);
  margin: 5px 0;
  border-radius: 999px;
}

.section{ padding: 72px 0; }
.section--tight{ padding: 28px 0; }
.section--alt{
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0));
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.hero{ padding-top: 64px; }
.hero__grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 34px;
  align-items: center;
}
.kicker{
  display:inline-flex;
  gap: 10px;
  align-items:center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-size: 13px;
}
h1{
  margin: 14px 0 10px;
  font-size: clamp(30px, 4.2vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.5px;
}
.lead{
  margin: 0 0 18px;
  font-size: 16.5px;
  color: var(--muted);
  max-width: 54ch;
}
.hero__actions{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0 18px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  text-decoration:none;
  border: 1px solid rgba(255,255,255,.16);
  min-height: 44px;
  user-select:none;
}
.btn:focus-visible{ outline: 2px solid var(--focus); outline-offset: 2px; }
.btn--primary{
  background: linear-gradient(135deg, rgba(110,231,255,.22), rgba(167,139,250,.22));
  border-color: rgba(255,255,255,.22);
}
.btn--primary:hover{ background: linear-gradient(135deg, rgba(110,231,255,.30), rgba(167,139,250,.30)); }
.btn--ghost{
  background: rgba(255,255,255,.04);
}
.btn--ghost:hover{ background: rgba(255,255,255,.08); }

.hero__badges{
  margin: 0;
  padding: 0;
  list-style:none;
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
}
.hero__badges li{
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
}

.hero__visual{ position:relative; }
.panel{
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.panel__header{
  display:flex;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
}
.dot{
  width: 10px; height: 10px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
}
.panel__body{ padding: 16px; }
.metric{
  display:flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.12);
  margin-bottom: 10px;
}
.metric__label{ color: var(--muted); font-size: 13px; }
.metric__value{ font-weight: 650; }

.chips{ display:flex; flex-wrap:wrap; gap: 8px; margin-top: 12px; }
.chip{
  font-size: 12.5px;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
}

.hero__glow{
  position:absolute;
  inset: -40px -30px -30px -30px;
  background:
    radial-gradient(500px 300px at 30% 30%, rgba(110,231,255,.18), transparent 60%),
    radial-gradient(420px 320px at 80% 20%, rgba(167,139,250,.18), transparent 60%);
  filter: blur(18px);
  z-index: -1;
}

.section__header{
  margin-bottom: 22px;
}
h2{
  margin: 0 0 8px;
  font-size: clamp(22px, 2.5vw, 30px);
  letter-spacing: -0.2px;
}
.h3{ font-size: 16px; margin: 0 0 6px; }
.section__sub{
  margin: 0;
  color: var(--muted);
  max-width: 80ch;
}

.strip__grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.strip__item{
  padding: 16px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
}
.strip__item p{ margin: 0; color: var(--muted); font-size: 14.5px; }

.cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.cards--4{ grid-template-columns: repeat(4, 1fr); }
.card{
  padding: 18px 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
}
.card h3{ margin: 0 0 8px; font-size: 17px; }
.card p{ margin: 0 0 10px; color: var(--muted); }
.list{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}
.list li{ margin: 6px 0; }

.grid-2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
}

.steps{
  margin-top: 12px;
  display:grid;
  gap: 10px;
}
.step{
  display:flex;
  gap: 10px;
  align-items:center;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.10);
}
.step__n{
  width: 26px;
  height: 26px;
  border-radius: 9px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  font-weight: 700;
}
.step__t{ color: var(--muted); }

.link{
  display:inline-block;
  margin-top: 8px;
  color: rgba(255,255,255,.86);
  text-decoration:none;
  border-bottom: 1px solid rgba(255,255,255,.25);
}
.link:hover{ border-bottom-color: rgba(255,255,255,.55); }

.cta-banner{
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.14);
  background:
    linear-gradient(135deg, rgba(110,231,255,.10), rgba(167,139,250,.10)),
    rgba(255,255,255,.03);
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-banner h3{ margin:0 0 4px; font-size: 18px; }
.cta-banner p{ margin:0; color: var(--muted); }

.timeline{
  display:grid;
  gap: 14px;
  margin-bottom: 18px;
}
.timeline__item{
  display:grid;
  grid-template-columns: 18px 1fr;
  gap: 12px;
  align-items:start;
  padding: 14px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
}
.timeline__dot{
  width: 12px; height: 12px;
  border-radius: 999px;
  margin-top: 5px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 10px 26px rgba(0,0,0,.35);
}
.timeline__content h3{ margin: 0 0 4px; font-size: 16.5px; }
.timeline__content p{ margin: 0; color: var(--muted); }

.faq{
  display:grid;
  gap: 10px;
}
.faq__item{
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
  padding: 12px 14px;
}
.faq__item summary{
  cursor: pointer;
  font-weight: 650;
}
.faq__item p{ margin: 10px 0 0; color: var(--muted); }

.contact{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: var(--gap);
}
.contact__card, .contact__note{
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
}
.contact__lead{ margin: 10px 0 8px; }
.contact__mail{
  font-size: 20px;
  font-weight: 800;
  text-decoration:none;
  border-bottom: 1px solid rgba(255,255,255,.25);
}
.contact__mail:hover{ border-bottom-color: rgba(255,255,255,.55); }
.contact__actions{
  margin-top: 14px;
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.muted{ color: var(--muted); margin: 0; }

.footer{
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 24px 0 30px;
  background: rgba(0,0,0,.16);
}
.footer__inner{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
.footer__brand{
  display:flex;
  align-items:center;
  gap: 10px;
}
.footer__small{
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 70ch;
  font-size: 13.5px;
}
.footer__right{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items:center;
}
.footer__link{
  color: var(--muted);
  text-decoration:none;
  border-bottom: 1px dotted rgba(255,255,255,.30);
  padding: 10px 0;
}
.footer__link:hover{ color: var(--text); border-bottom-style: solid; }

.reveal{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 980px){
  .hero__grid{ grid-template-columns: 1fr; }
  .strip__grid{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .cards--4{ grid-template-columns: 1fr 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .contact{ grid-template-columns: 1fr; }
  .site-header{ top: 41px; }
}
@media (max-width: 720px){
  .topbar__inner{ flex-direction: column; align-items:flex-start; }
  .header__inner{ padding: 12px 0; }
  .nav-toggle{ display:block; }
  .nav{
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 1px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 12px;
    background: rgba(11,15,20,.92);
    border-bottom: 1px solid rgba(255,255,255,.10);
    backdrop-filter: blur(14px);
  }
  .nav.is-open{ display:flex; }
  .nav__link, .nav__cta{
    padding: 12px 12px;
    border-radius: 14px;
  }
  .nav__cta{ margin-left: 0; text-align:center; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .reveal{ transition: none; transform:none; opacity: 1; }
}