:root {
  --ink: #171922;
  --ink-muted: #626979;
  --paper: #fbfbf8;
  --surface: #ffffff;
  --line: #e4e6e8;
  --night: #11131a;
  --night-soft: #191c25;
  --night-line: #303542;
  --night-muted: #a9b0c0;
  --mint: #52cbae;
  --mint-dark: #187b68;
  --yellow: #f0b93a;
  --coral: #ef5951;
  --max-width: 1160px;
  --radius-lg: 8px;
  --radius-md: 5px;
  --shadow: 0 12px 30px rgba(10, 13, 20, 0.08);
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
}

a { color: inherit; }

button, input, textarea { font: inherit; }

:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 9px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.skip-link:focus { top: 16px; }

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: #f8f9fc;
  background: var(--night);
}

.site-header--light {
  color: var(--ink);
  border-bottom-color: var(--line);
  background: var(--paper);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--max-width));
  min-height: 78px;
  margin: auto;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-size: 16px;
  font-weight: 730;
  letter-spacing: -0.035em;
  white-space: nowrap;
}

.brand img { width: 32px; height: 32px; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  padding: 9px 10px;
  color: inherit;
  opacity: 0.78;
  font-size: 14px;
  font-weight: 560;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { opacity: 1; text-decoration: underline; text-decoration-color: var(--mint); text-decoration-thickness: 2px; text-underline-offset: 7px; }

.site-header--light .site-nav a:hover,
.site-header--light .site-nav a[aria-current="page"] { background: transparent; }

.nav-cta {
  margin-left: 11px;
  padding: 9px 13px !important;
  color: var(--night) !important;
  opacity: 1 !important;
  background: var(--mint) !important;
  text-decoration: none !important;
}

.nav-toggle {
  display: none;
  min-width: 76px;
  height: 42px;
  padding: 0 12px;
  border: 1px solid currentColor;
  border-radius: 5px;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.container { width: min(calc(100% - 48px), var(--max-width)); margin: auto; }

.hero {
  overflow: hidden;
  color: #f6f7fb;
  background: var(--night);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, 0.92fr);
  align-items: center;
  min-height: 585px;
  padding: 79px 0 82px;
  gap: 72px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 19px;
  color: var(--mint);
  font-size: 14px;
  font-weight: 680;
  letter-spacing: -0.015em;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 690px;
  margin-bottom: 23px;
  font-size: clamp(40px, 4.6vw, 61px);
  font-weight: 720;
  letter-spacing: -0.058em;
  line-height: 1.04;
}

.hero-copy {
  max-width: 568px;
  margin-bottom: 32px;
  color: var(--night-muted);
  font-size: 19px;
  letter-spacing: -0.022em;
  line-height: 1.48;
}

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 17px;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--night);
  background: var(--mint);
  box-shadow: none;
  font-size: 15px;
  font-weight: 710;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease;
}

.button:hover { transform: none; background: #6cd8bf; }

.button--quiet {
  border-color: var(--night-line);
  color: #f3f5f8;
  background: transparent;
  box-shadow: none;
}

.button--quiet:hover { background: var(--night-soft); }

.button--light {
  border-color: var(--line);
  color: var(--ink);
  background: var(--surface);
  box-shadow: none;
}

.button--light:hover { background: #f4f5f4; }

.hero-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 19px 0 0;
  color: var(--night-muted);
  font-size: 12px;
  line-height: 1.45;
}

.hero-note svg { flex: 0 0 auto; color: var(--mint); }

.hero-art {
  width: min(100%, 460px);
  margin-left: auto;
  padding: 24px 0 19px;
  border-top: 1px solid #454957;
  border-bottom: 1px solid #454957;
}
.hero-art__top,
.hero-art__bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--night-muted);
  font-size: 11px;
  font-weight: 690;
  letter-spacing: 0.13em;
}
.hero-art__lines { display: grid; gap: 27px; margin: 66px 0 57px; }
.hero-art__line { display: grid; grid-template-columns: minmax(0, 1fr) 24px; align-items: center; gap: 20px; }
.hero-art__bar { position: relative; display: block; height: 32px; background: #2d3240; }
.hero-art__bar::before { position: absolute; inset: 0 auto 0 0; content: ""; }
.hero-art__bar--coral::before { width: 100%; background: var(--coral); }
.hero-art__bar--yellow::before { width: 63%; background: var(--yellow); }
.hero-art__bar--mint::before { width: 31%; background: var(--mint); }
.hero-art__number { color: #9ba2b2; font-size: 11px; font-variant-numeric: tabular-nums; }

.service-strip {
  padding: 31px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-muted);
  background: var(--surface);
}

.service-strip__inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.service-strip__intro { max-width: 235px; margin: 0; font-size: 13px; font-weight: 620; line-height: 1.45; }
.service-list { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 13px 26px; color: #343a47; font-size: 14px; font-weight: 700; }
.service-list span { display: inline-flex; align-items: center; gap: 7px; }
.service-list i { width: 7px; height: 7px; background: var(--mint); }

.section { padding: 118px 0; }
.section--compact { padding: 88px 0; }
.section--dark { color: #f5f6f9; background: var(--night); }
.section--mist { background: #f2f3f0; }

.section-heading { max-width: 650px; margin-bottom: 53px; }
.section-heading--row { display: flex; align-items: end; justify-content: space-between; max-width: none; gap: 36px; }
.section-kicker { margin-bottom: 13px; color: var(--mint-dark); font-size: 13px; font-weight: 680; letter-spacing: -0.01em; }
.section--dark .section-kicker { color: var(--mint); }
h2 { margin-bottom: 14px; font-size: clamp(30px, 3.45vw, 45px); font-weight: 710; letter-spacing: -0.052em; line-height: 1.07; }
.section-lede { max-width: 600px; margin-bottom: 0; color: var(--ink-muted); font-size: 17px; line-height: 1.55; }
.section--dark .section-lede { color: var(--night-muted); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.feature { min-height: 220px; padding: 28px 32px 25px 0; border-bottom: 1px solid var(--line); background: transparent; }
.feature + .feature { padding-left: 32px; border-left: 1px solid var(--line); }
.feature-mark { display: grid; place-items: center; width: 28px; height: 28px; margin-bottom: 35px; color: var(--mint-dark); }
.feature h3 { margin-bottom: 8px; font-size: 18px; letter-spacing: -0.038em; }
.feature p { margin-bottom: 0; color: var(--ink-muted); font-size: 14px; line-height: 1.55; }

.security-layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 76px; align-items: start; }
.security-list { display: grid; gap: 0; border-top: 1px solid var(--night-line); }
.security-item { display: grid; grid-template-columns: 42px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--night-line); }
.security-number { color: var(--mint); font-size: 13px; font-weight: 760; }
.security-item h3 { margin: 0 0 7px; font-size: 16px; letter-spacing: -0.03em; }
.security-item p { margin: 0; color: var(--night-muted); font-size: 14px; line-height: 1.55; }

.pairing-demo { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pairing-step { display: grid; grid-template-columns: 42px minmax(0, 1fr) auto; align-items: center; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.pairing-step:last-of-type { border-bottom: 0; }
.pairing-step__symbol { color: var(--mint-dark); font-size: 13px; font-weight: 800; }
.pairing-step span { color: var(--ink); font-size: 15px; font-weight: 650; }
.pairing-step small { color: var(--ink-muted); font-size: 13px; line-height: 1.45; }
.pairing-note { margin: 0; padding: 21px 0; color: var(--ink-muted); font-size: 13px; line-height: 1.55; }

.final-cta { padding: 90px 0; text-align: center; color: var(--ink); border-top: 1px solid var(--line); background: var(--surface); }
.final-cta h2 { max-width: 700px; margin: 0 auto 17px; }
.final-cta p { max-width: 530px; margin: 0 auto 27px; color: var(--ink-muted); font-size: 17px; line-height: 1.5; }
.final-cta .actions { justify-content: center; }
.final-cta .button--quiet { border-color: var(--line); color: var(--ink); }
.final-cta .button--quiet:hover { background: #f4f5f4; }

.page-hero { padding: 78px 0 70px; border-bottom: 1px solid var(--line); background: var(--surface); }
.page-hero--dark { color: #f5f6f9; border-bottom-color: var(--night-line); background: var(--night); }
.page-hero__inner { max-width: 760px; }
.page-hero .eyebrow { margin-bottom: 16px; color: var(--mint-dark); }
.page-hero--dark .eyebrow { color: var(--mint); }
.page-hero h1 { margin-bottom: 18px; font-size: clamp(42px, 5vw, 64px); }
.page-hero p:last-child { max-width: 650px; margin: 0; color: var(--ink-muted); font-size: 18px; line-height: 1.55; }
.page-hero--dark p:last-child { color: var(--night-muted); }

.page-layout { display: grid; grid-template-columns: minmax(0, 1fr) 255px; gap: 80px; align-items: start; padding: 80px 0 120px; }
.page-content { max-width: 760px; }
.page-content h2 { margin: 52px 0 16px; font-size: 28px; }
.page-content h2:first-child { margin-top: 0; }
.page-content h3 { margin: 31px 0 10px; font-size: 18px; letter-spacing: -0.035em; }
.page-content p, .page-content li { color: #505866; font-size: 16px; line-height: 1.65; }
.page-content ul { padding-left: 22px; }
.page-content li + li { margin-top: 7px; }
.page-content a { color: var(--mint-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.page-content .lead { margin-bottom: 32px; color: var(--ink); font-size: 19px; line-height: 1.55; }
.page-content .notice { margin: 30px 0; padding: 18px 20px; border-left: 3px solid var(--mint); color: #3f4755; background: #ebf8f5; font-size: 14px; line-height: 1.55; }

.page-aside { position: sticky; top: 24px; padding: 0 0 0 18px; border-left: 1px solid var(--line); background: transparent; }
.page-aside__title { display: block; margin-bottom: 8px; color: var(--ink-muted); font-size: 11px; font-weight: 760; letter-spacing: 0.02em; }
.page-aside a { display: block; padding: 7px 4px; color: var(--ink); font-size: 14px; text-decoration: none; }
.page-aside a:hover { color: var(--mint-dark); }

.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-bottom: 70px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.support-card { display: flex; flex-direction: column; min-height: 230px; padding: 25px 28px 25px 0; color: var(--ink); background: transparent; text-decoration: none; transition: background-color 160ms ease; }
.support-card + .support-card { padding-left: 28px; border-left: 1px solid var(--line); }
.support-card:hover { background: #f5f6f4; }
.support-card__icon { display: grid; place-items: center; width: 28px; height: 28px; margin-bottom: auto; color: var(--mint-dark); }
.support-card h2 { margin: 22px 0 8px; font-size: 20px; }
.support-card p { margin: 0; color: var(--ink-muted); font-size: 14px; line-height: 1.5; }
.support-card__arrow { margin-top: 22px; color: var(--mint-dark); font-size: 15px; font-weight: 760; }

.help-panel { display: grid; grid-template-columns: minmax(0, 1fr) 315px; gap: 50px; padding: 43px 0; border-top: 1px solid var(--night-line); border-bottom: 1px solid var(--night-line); color: #f7f8fb; background: var(--night); }
.help-panel h2 { margin-bottom: 12px; font-size: 34px; }
.help-panel p { max-width: 630px; margin: 0; color: var(--night-muted); font-size: 16px; line-height: 1.55; }
.help-panel__action { display: flex; flex-direction: column; align-items: start; justify-content: center; gap: 12px; }
.help-panel__action span { color: var(--night-muted); font-size: 12px; line-height: 1.5; }

.faq { margin-top: 78px; }
.faq h2 { margin-bottom: 24px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 20px 0; cursor: pointer; font-size: 17px; font-weight: 670; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { flex: 0 0 auto; color: var(--mint-dark); content: "+"; font-size: 24px; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { max-width: 760px; margin: -2px 35px 21px 0; color: var(--ink-muted); font-size: 15px; line-height: 1.6; }

.download-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.download-card { padding: 38px 38px 38px 0; background: var(--surface); }
.download-card + .download-card { padding-left: 38px; border-left: 1px solid var(--line); }
.download-card--dark { color: #f7f8fb; border-color: var(--night); background: var(--night); }
.download-card__platform { display: inline-flex; margin-bottom: 50px; padding: 0; color: var(--ink-muted); font-size: 12px; font-weight: 690; }
.download-card--dark .download-card__platform { border-color: var(--night-line); color: var(--night-muted); }
.download-card h2 { margin-bottom: 11px; font-size: 32px; }
.download-card > p:first-of-type { min-height: 74px; margin-bottom: 28px; color: var(--ink-muted); font-size: 15px; line-height: 1.55; }
.download-card--dark p { color: var(--night-muted); }
.download-status { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 19px; color: var(--mint-dark); font-size: 13px; font-weight: 690; }
.download-card--dark .download-status { color: var(--mint); }
.download-status::before { width: 8px; height: 8px; border-radius: 50%; background: currentColor; content: ""; }
.download-next { min-height: 48px; margin: 0; color: var(--ink); font-size: 15px; line-height: 1.55; }
.download-card--dark .download-next { color: #f7f8fb; }
.requirements { margin: 22px 0 0; padding: 18px 0 0; border-top: 1px solid var(--line); color: var(--ink-muted); font-size: 12px; line-height: 1.5; }
.download-card--dark .requirements { border-color: var(--night-line); color: var(--night-muted); }

.about-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.value { padding-top: 18px; border-top: 2px solid var(--mint); }
.value + .value { padding-left: 24px; border-left: 1px solid var(--line); }
.value h2 { margin-bottom: 10px; font-size: 23px; }
.value p { margin: 0; color: var(--ink-muted); font-size: 15px; line-height: 1.6; }

.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.timeline-item { padding: 23px 24px 0 0; border-right: 1px solid var(--line); }
.timeline-item + .timeline-item { padding-left: 24px; }
.timeline-item:last-child { border: 0; }
.timeline-item span { display: block; margin-bottom: 24px; color: var(--mint-dark); font-size: 12px; font-weight: 750; letter-spacing: 0.06em; text-transform: uppercase; }
.timeline-item h3 { margin-bottom: 8px; font-size: 18px; letter-spacing: -0.035em; }
.timeline-item p { margin: 0; color: var(--ink-muted); font-size: 14px; line-height: 1.55; }

.legal-meta { margin-bottom: 38px; color: var(--ink-muted); font-size: 14px; }

.site-footer { color: #d7dbe3; background: #0c0e13; }
.footer-main { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 42px; padding: 57px 0 42px; }
.footer-brand { max-width: 300px; }
.footer-brand .brand { margin-bottom: 14px; color: #fff; }
.footer-brand p { margin: 0; color: #969eae; font-size: 13px; line-height: 1.55; }
.footer-col h2 { margin: 4px 0 14px; color: #fff; font-size: 13px; font-weight: 740; letter-spacing: 0; }
.footer-col a { display: block; width: fit-content; margin: 8px 0; color: #aeb5c2; font-size: 13px; text-decoration: none; }
.footer-col a:hover { color: var(--mint); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 19px 0 27px; border-top: 1px solid #252934; color: #848c9c; font-size: 12px; }
.footer-bottom a { text-decoration: none; }

@media (max-width: 820px) {
  .nav-wrap, .container { width: min(calc(100% - 32px), var(--max-width)); }
  .nav-wrap { min-height: 68px; }
  .nav-toggle { display: inline-grid; place-items: center; }
  .site-nav { display: none; position: absolute; top: 68px; right: 16px; left: 16px; padding: 9px; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); box-shadow: var(--shadow); }
  .site-header:not(.site-header--light) .site-nav { border-color: var(--night-line); background: #1b1e27; }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: 12px; color: var(--ink); opacity: 1; }
  .site-header:not(.site-header--light) .site-nav a { color: #fff; }
  .nav-cta { margin: 4px 0 0; }
  .hero-inner { grid-template-columns: 1fr; min-height: 0; padding: 48px 0 0; gap: 29px; }
  .hero-copy { font-size: 17px; }
  .hero-art { margin: 0 auto 48px; }
  .service-strip__inner, .section-heading--row { display: block; }
  .service-strip__intro { max-width: none; margin-bottom: 17px; }
  .service-list { justify-content: flex-start; }
  .section { padding: 68px 0; }
  .section--compact { padding: 65px 0; }
  .page-hero { padding: 50px 0 48px; }
  .page-hero h1 { font-size: clamp(36px, 7.5vw, 46px); }
  .feature-grid, .about-values { grid-template-columns: 1fr; }
  .feature, .feature + .feature { min-height: 0; padding: 25px 0; border-left: 0; }
  .security-layout, .help-panel { grid-template-columns: 1fr; gap: 33px; }
  .support-grid, .download-grid { grid-template-columns: 1fr; }
  .support-card, .support-card + .support-card { min-height: 0; padding: 24px 0; border-left: 0; }
  .support-card + .support-card { border-top: 1px solid var(--line); }
  .download-section { padding: 46px 0; }
  .download-card, .download-card + .download-card { padding: 30px 0; border-left: 0; }
  .download-card + .download-card { border-top: 1px solid var(--line); }
  .download-card__platform { margin-bottom: 25px; }
  .download-card > p:first-of-type { min-height: 0; margin-bottom: 22px; }
  .value + .value { margin-top: 24px; padding-left: 0; border-left: 0; }
  .page-layout { grid-template-columns: 1fr; gap: 0; padding: 58px 0 86px; }
  .page-aside { display: none; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 31px; }
  .footer-brand { grid-column: span 2; }
  .timeline { grid-template-columns: 1fr; gap: 22px; }
  .timeline-item, .timeline-item + .timeline-item { padding: 0; border-right: 0; }
}

@media (max-width: 480px) {
  h1 { font-size: 39px; }
  .actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .section-heading { margin-bottom: 34px; }
  .hero-art__lines { gap: 20px; margin: 42px 0; }
  .hero-art__bar { height: 26px; }
  .feature-mark { margin-bottom: 28px; }
  .pairing-step { grid-template-columns: 30px 1fr; gap: 12px; }
  .pairing-step small { grid-column: 2; }
  .help-panel { padding: 28px 0; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { display: block; }
  .footer-bottom span + span { display: block; margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}
