:root {
  color-scheme: dark;
  --bg: #07101a;
  --panel: #101b29;
  --line: #26394b;
  --text: #edf5f8;
  --muted: #90a3b5;
  --accent: #67e4d7;
  --accent2: #319caa;
  --max: 1180px;
  font-family: "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 86% 8%, rgba(63, 207, 194, .09), transparent 26rem),
    radial-gradient(circle at 8% 72%, rgba(47, 133, 167, .08), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }
.skip {
  position: fixed;
  left: 1rem;
  top: -5rem;
  background: var(--accent);
  color: #061016;
  padding: .6rem 1rem;
  z-index: 10;
}
.skip:focus { top: 1rem; }

.topbar {
  width: min(calc(100% - 40px), var(--max));
  height: 82px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(144, 163, 181, .16);
}
.brand { display: flex; align-items: center; gap: .7rem; font-weight: 700; letter-spacing: .03em; }
.brand img { filter: drop-shadow(0 0 16px rgba(103, 228, 215, .16)); }
.header-actions { display: flex; align-items: center; gap: 1.6rem; }
nav { display: flex; gap: 1.8rem; color: var(--muted); font-size: .9rem; }
nav a:hover, nav a:focus, footer a:hover { color: var(--accent); }
.language { display: flex; align-items: center; gap: .55rem; color: var(--muted); font-size: .76rem; }
.language select { width: 170px; min-height: 36px; padding: .3rem 2rem .3rem .65rem; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); font: inherit; cursor: pointer; }
.language select:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

main { overflow: hidden; }
.hero {
  width: min(calc(100% - 40px), var(--max));
  min-height: 620px;
  margin: auto;
  padding: 72px 0 78px;
  display: grid;
  grid-template-columns: minmax(0, .93fr) minmax(440px, 1.07fr);
  gap: 4rem;
  align-items: center;
}
.hero-copy { min-width: 0; }
.eyebrow { color: var(--accent); font-size: .75rem; font-weight: 700; letter-spacing: .18em; }
.hero h1 {
  font-size: clamp(3.8rem, 6.5vw, 6.2rem);
  line-height: .89;
  letter-spacing: -.065em;
  margin: 1.15rem 0 1.5rem;
}
.hero h1 span { color: transparent; -webkit-text-stroke: 1.5px rgba(237, 245, 248, .42); }
.lede { font-size: clamp(1.05rem, 1.7vw, 1.25rem); line-height: 1.5; color: #adbdca; max-width: 620px; margin: 0 0 1.6rem; }
.positioning { max-width: 610px; margin: -1rem 0 1.5rem; color: var(--muted); font-size: .9rem; }
.trustline { display: flex; flex-wrap: wrap; gap: .6rem; }
.trustline span { border: 1px solid var(--line); background: rgba(16, 27, 41, .8); padding: .48rem .75rem; border-radius: 999px; font-size: .78rem; color: #bfd0da; }
.notice { margin-top: 1.65rem; color: #aebdca; font-size: .92rem; }
.notice > span { display: inline-block; width: .55rem; height: .55rem; background: #eab85d; border-radius: 50%; margin-right: .55rem; box-shadow: 0 0 14px rgba(234, 184, 93, .35); }
.actions { display: flex; gap: .8rem; margin-top: 1.35rem; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: .7rem 1.1rem; border: 1px solid var(--line); border-radius: 9px; font-weight: 650; font-size: .9rem; background: rgba(16, 27, 41, .78); transition: .2s ease; }
.button:hover, .button:focus { border-color: #54728a; transform: translateY(-1px); }
.button.primary { background: var(--accent); border-color: var(--accent); color: #061016; }

.hero-product { margin: 0; background: rgba(10, 17, 27, .78); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; box-shadow: 0 28px 70px rgba(0, 0, 0, .34); }
.hero-product img { width: 100%; height: auto; display: block; }
.hero-product figcaption { padding: .85rem 1rem; display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--line); font-size: .78rem; }
.hero-product figcaption strong { color: var(--accent); }
.hero-product figcaption span { color: var(--muted); }

.interface, .principles, .status, .faq, .support-panel, .legal-note { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; padding: 100px 0; }
.section-copy { max-width: 650px; }
.section-copy h2, .status h2, .support-panel h2 { font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.05; letter-spacing: -.045em; margin: .8rem 0 1rem; }
.section-copy p, .status p, .support-panel p { color: var(--muted); font-size: 1.05rem; }

.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 3rem; }
.flow article { padding: 1.5rem; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(145deg, rgba(18, 31, 46, .9), rgba(12, 22, 34, .9)); }
.flow span { color: var(--accent); font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.flow h3 { margin: 1.1rem 0 .65rem; font-size: 1.12rem; }
.flow p { margin: 0; color: var(--muted); font-size: .9rem; }

.principles { border-top: 1px solid rgba(144, 163, 181, .13); }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 3.5rem; }
.grid article { background: linear-gradient(145deg, rgba(18, 31, 46, .9), rgba(12, 22, 34, .9)); border: 1px solid var(--line); border-radius: 14px; padding: 1.5rem; min-height: 230px; }
.number { font-family: Consolas, monospace; color: var(--accent); font-size: .78rem; }
.grid h3 { font-size: 1.1rem; margin: 3rem 0 .7rem; }
.grid p { color: var(--muted); font-size: .9rem; line-height: 1.6; margin: 0; }

.status { display: grid; grid-template-columns: 1fr 1fr; gap: 7rem; align-items: start; border-top: 1px solid rgba(144, 163, 181, .13); }
.status ol { list-style: none; padding: 0; margin: 0; }
.status li { display: flex; gap: 1rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); color: #687c90; }
.status li > span { font-family: Consolas, monospace; font-size: .8rem; margin-top: .15rem; }
.status li div { display: flex; flex-direction: column; }
.status li strong { color: #8ca0b2; }
.status li small { font-size: .8rem; }
.status li.done strong, .status li.done > span { color: var(--accent); }
.status li.active strong, .status li.active > span { color: var(--text); }

.faq { border-top: 1px solid rgba(144, 163, 181, .13); display: grid; grid-template-columns: .8fr 1.2fr; gap: 5rem; }
.faq-list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 1.1rem 0; }
.faq summary { cursor: pointer; font-weight: 650; }
.faq details p { color: var(--muted); margin: .8rem 2rem .25rem 0; }
.support-panel { border-top: 1px solid rgba(144, 163, 181, .13); display: flex; align-items: center; justify-content: space-between; gap: 3rem; padding-bottom: 80px; }
.support-panel > div { max-width: 760px; }
.support-panel .languages-note { font-size: .88rem; }
.support-panel .button { flex: 0 0 auto; }
.legal-note { padding: 1.5rem; border: 1px solid var(--line); border-radius: 14px; background: rgba(16, 27, 41, .7); margin-bottom: 100px; }
.legal-note p { color: var(--muted); margin: .45rem 0; }
.legal-note a { color: var(--accent); font-size: .88rem; }
footer { width: min(calc(100% - 40px), var(--max)); margin: auto; padding: 26px 0 36px; border-top: 1px solid rgba(144, 163, 181, .16); display: flex; justify-content: space-between; gap: 2rem; color: #708397; font-size: .78rem; }
footer span:last-child { display: flex; gap: 1.4rem; }

@media (max-width: 980px) {
  .header-actions { gap: .9rem; }
  nav { gap: 1rem; }
  .language > span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .hero { grid-template-columns: 1fr; gap: 2.6rem; padding-top: 76px; }
  .hero-copy { max-width: 760px; }
  .hero-product { max-width: 760px; }
}

@media (max-width: 800px) {
  .topbar nav a:not(:last-child) { display: none; }
  .hero h1 { font-size: clamp(3.15rem, 14vw, 4.2rem); }
  .actions { flex-direction: column; width: 100%; }
  .button { width: 100%; }
  .flow { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr 1fr; }
  .status { grid-template-columns: 1fr; gap: 3rem; }
  .faq { grid-template-columns: 1fr; gap: 2rem; }
  .support-panel { align-items: flex-start; }
  .interface, .principles, .status, .faq, .support-panel { padding: 72px 0; }
  footer { flex-direction: column; }
}

@media (max-width: 520px) {
  .hero { padding-top: 58px; gap: 2.2rem; }
  .grid { grid-template-columns: 1fr; }
  .trustline span { font-size: .72rem; }
  .grid article { min-height: auto; }
  .grid h3 { margin-top: 2rem; }
  .hero h1 span { -webkit-text-stroke: 1px rgba(237, 245, 248, .42); }
  .hero-product figcaption { flex-direction: column; gap: .15rem; }
  .topbar { width: min(calc(100% - 24px), var(--max)); }
  .topbar nav { display: none; }
  .language select { width: 166px; font-size: .72rem; }
  .support-panel { flex-direction: column; }
  .legal-note { margin-bottom: 72px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}