:root {
  color-scheme: light dark;
  --blue: #2196f3;
  --blue-strong: #087bd1;
  --blue-soft: #e9f5ff;
  --ink: #132033;
  --muted: #607086;
  --surface: #ffffff;
  --surface-alt: #f5f9fd;
  --line: #dce7f1;
  --shadow: 0 18px 60px rgba(20, 73, 112, 0.12);
  --radius: 24px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 10% 0%, rgba(33, 150, 243, 0.13), transparent 32rem),
    var(--surface);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--blue-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--blue);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
  border-radius: 6px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--blue);
  box-shadow: 0 8px 22px rgba(33, 150, 243, 0.26);
}

.brand-mark img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 20px;
  font-size: 0.92rem;
}

.nav a {
  color: var(--muted);
  font-weight: 650;
  text-decoration: none;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--blue-strong);
}

.hero {
  padding: 108px 0 84px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 72px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 7px 12px;
  border: 1px solid rgba(33, 150, 243, 0.26);
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 8vw, 6.3rem);
  font-weight: 850;
}

.document h1 {
  font-size: clamp(2.6rem, 7vw, 4.8rem);
}

h2 {
  margin: 2.7rem 0 1rem;
  font-size: clamp(1.55rem, 4vw, 2.15rem);
}

h3 {
  margin: 2rem 0 0.6rem;
  font-size: 1.2rem;
}

.lead {
  max-width: 760px;
  margin: 0 0 34px;
  color: var(--muted);
  font-size: clamp(1.12rem, 2vw, 1.35rem);
}

.hero-art {
  position: relative;
  min-height: 390px;
  display: grid;
  place-items: center;
}

.orbit {
  position: absolute;
  inset: 22px;
  border: 1px solid rgba(33, 150, 243, 0.22);
  border-radius: 50%;
  transform: rotate(-14deg);
}

.orbit::before,
.orbit::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 8px rgba(33, 150, 243, 0.13);
}

.orbit::before {
  top: 38px;
  right: 52px;
}

.orbit::after {
  bottom: 47px;
  left: 49px;
}

.hero-logo {
  position: relative;
  width: min(72vw, 280px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 32%;
  background: linear-gradient(145deg, #34a8ff, #148be4);
  box-shadow: var(--shadow);
}

.hero-logo img {
  width: 78%;
  height: 78%;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 15px;
  color: var(--ink);
  background: var(--surface);
  font-weight: 760;
  text-decoration: none;
  box-shadow: 0 8px 28px rgba(24, 67, 98, 0.07);
}

.button.primary {
  border-color: var(--blue);
  color: #fff;
  background: var(--blue);
}

.section {
  padding: 76px 0;
}

.section.alt {
  border-block: 1px solid var(--line);
  background: var(--surface-alt);
}

.section-title {
  max-width: 700px;
  margin-bottom: 36px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 12px 38px rgba(24, 67, 98, 0.06);
}

.card h3 {
  margin-top: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.document {
  width: min(calc(100% - 40px), 860px);
  margin: 0 auto;
  padding: 86px 0 110px;
}

.document-header {
  margin-bottom: 54px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.meta {
  color: var(--muted);
  font-size: 0.94rem;
}

.notice,
.warning,
.success {
  margin: 28px 0;
  padding: 20px 22px;
  border-left: 4px solid var(--blue);
  border-radius: 10px 18px 18px 10px;
  background: var(--blue-soft);
}

.warning {
  border-left-color: #e08b21;
  background: #fff6e8;
}

.success {
  border-left-color: #1eaf73;
  background: #eafaf3;
}

.document li + li {
  margin-top: 0.48rem;
}

.document table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.94rem;
}

.document th,
.document td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.document th {
  background: var(--surface-alt);
}

.steps {
  counter-reset: item;
  list-style: none;
  padding: 0;
}

.steps > li {
  position: relative;
  min-height: 46px;
  padding: 5px 0 22px 58px;
  counter-increment: item;
}

.steps > li::before {
  content: counter(item);
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background: var(--blue);
  font-weight: 850;
}

.site-footer {
  padding: 36px 0 50px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

.footer-links a {
  color: var(--muted);
}

@media (max-width: 780px) {
  .site-header {
    position: static;
  }

  .header-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav,
  .footer-links {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 70px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .hero-art {
    min-height: 330px;
    order: -1;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --blue: #42a7f5;
    --blue-strong: #76c2ff;
    --blue-soft: #102c42;
    --ink: #eff7ff;
    --muted: #a8b8c8;
    --surface: #07111b;
    --surface-alt: #0b1824;
    --line: #203344;
    --shadow: 0 18px 60px rgba(0, 0, 0, 0.34);
  }

  .warning {
    background: #332510;
  }

  .success {
    background: #0d2a20;
  }

  .button.primary {
    color: #04101a;
  }
}

@media print {
  .site-header,
  .site-footer,
  .actions {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .document {
    width: 100%;
    padding: 0;
  }

  a {
    color: #000;
  }
}