:root {
  color-scheme: light;
  --ink: #17202f;
  --muted: #5e6878;
  --line: #dfe4ec;
  --soft: #f4f7fb;
  --paper: #ffffff;
  --blue: #2d6cdf;
  --blue-deep: #174aa4;
  --violet: #7655e8;
  --green: #14875f;
  --shadow: 0 24px 70px rgba(30, 51, 84, 0.13);
  --radius: 22px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% -5%, rgba(45, 108, 223, 0.13), transparent 27rem),
    radial-gradient(circle at 93% 4%, rgba(118, 85, 232, 0.12), transparent 24rem),
    var(--paper);
  font-size: 17px;
  line-height: 1.65;
}

a {
  color: var(--blue-deep);
  text-underline-offset: 0.18em;
}

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

.shell {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(223, 228, 236, 0.8);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  box-shadow: 0 8px 22px rgba(45, 108, 223, 0.28);
  font-size: 18px;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: #3f4a5d;
  font-size: 15px;
  font-weight: 630;
  text-decoration: none;
}

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

.hero {
  padding: 104px 0 84px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 70px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  padding: 7px 12px;
  border: 1px solid #cfdcf5;
  border-radius: 999px;
  color: var(--blue-deep);
  background: rgba(244, 247, 251, 0.8);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  content: "";
}

h1,
h2,
h3 {
  margin-top: 0;
  color: #14203a;
  line-height: 1.16;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(44px, 6.4vw, 76px);
  font-weight: 790;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3.5vw, 40px);
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.lead {
  max-width: 720px;
  margin: 0 0 34px;
  color: var(--muted);
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.55;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 21px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: #fff;
  font-weight: 720;
  text-decoration: none;
  box-shadow: 0 7px 20px rgba(30, 51, 84, 0.07);
}

.button.primary {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: 0 12px 30px rgba(45, 108, 223, 0.27);
}

.product-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(207, 220, 245, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.product-card::after {
  position: absolute;
  right: -70px;
  bottom: -100px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(118, 85, 232, 0.2), transparent 67%);
  content: "";
}

.mock-label {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.meeting {
  position: relative;
  z-index: 1;
  margin-top: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: #fff;
}

.meeting strong,
.meeting span {
  display: block;
}

.meeting span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

.meeting.selected {
  border-color: #9cbaf2;
  background: #f7faff;
}

.section {
  padding: 78px 0;
}

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

.section-copy {
  max-width: 740px;
  margin-bottom: 38px;
  color: var(--muted);
  font-size: 19px;
}

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

.card {
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 8px 25px rgba(30, 51, 84, 0.05);
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
}

.step {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 12px;
  color: var(--blue-deep);
  background: #eaf1ff;
  font-weight: 800;
}

.page-hero {
  padding: 82px 0 46px;
}

.page-hero h1 {
  max-width: 900px;
  font-size: clamp(40px, 5.8vw, 66px);
}

.updated {
  margin-top: -8px;
  color: var(--muted);
  font-size: 14px;
}

.document-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: 56px;
  align-items: start;
  padding: 24px 0 96px;
}

.toc {
  position: sticky;
  top: 102px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
}

.toc strong {
  display: block;
  margin-bottom: 11px;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.toc a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.document {
  min-width: 0;
}

.document section {
  margin-bottom: 46px;
  scroll-margin-top: 104px;
}

.document h2 {
  margin-bottom: 14px;
  font-size: 29px;
}

.document h3 {
  margin-top: 26px;
}

.document p,
.document li {
  color: #465267;
}

.document li + li {
  margin-top: 8px;
}

.notice {
  margin: 26px 0;
  padding: 20px 22px;
  border-left: 4px solid var(--blue);
  border-radius: 4px 15px 15px 4px;
  background: #f2f6ff;
  color: #334665;
}

.contact-panel {
  padding: 30px;
  border: 1px solid #cbdaf5;
  border-radius: var(--radius);
  background: linear-gradient(145deg, #f8faff, #f2efff);
}

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

.checklist {
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 30px;
}

.checklist li::before {
  position: absolute;
  left: 0;
  color: var(--green);
  content: "✓";
  font-weight: 850;
}

.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--line);
  background: #f8fafc;
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.footer-copy {
  max-width: 420px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 8px 24px;
}

.footer-links a {
  color: #4d596b;
  font-size: 14px;
  text-decoration: none;
}

.not-found {
  min-height: 70vh;
  display: grid;
  place-items: center;
  padding: 70px 20px;
  text-align: center;
}

@media (max-width: 860px) {
  .hero-grid,
  .document-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 72px;
  }

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

  .toc {
    position: static;
  }
}

@media (max-width: 650px) {
  body {
    font-size: 16px;
  }

  .shell {
    width: min(100% - 28px, 1120px);
  }

  .nav {
    min-height: 64px;
  }

  .nav-links a:not(:last-child) {
    display: none;
  }

  .hero,
  .page-hero {
    padding-top: 58px;
  }

  h1 {
    font-size: 42px;
  }

  .product-card,
  .card,
  .contact-panel {
    padding: 21px;
  }

  .footer-grid {
    flex-direction: column;
  }

  .footer-links {
    width: 100%;
  }
}