:root {
  --bg: #06111b;
  --panel: rgba(9, 26, 40, 0.82);
  --panel-strong: rgba(13, 35, 52, 0.96);
  --line: rgba(112, 211, 224, 0.22);
  --text: #eef8fb;
  --muted: #9db5c4;
  --cyan: #4dd8e8;
  --amber: #f2b84b;
  --danger: #f06161;
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
  background:
    radial-gradient(circle at 12% 18%, rgba(79, 140, 255, 0.1), transparent 28rem),
    linear-gradient(180deg, #071521 0, var(--bg) 760px),
    var(--bg);
}

img {
  display: block;
  max-width: 100%;
}

[hidden] {
  display: none !important;
}

a {
  color: inherit;
  text-decoration: none;
}

.hero-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 760px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.42fr);
  align-items: end;
  gap: 54px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 118px clamp(18px, 4vw, 34px) 84px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 52% 30%, rgba(77, 216, 232, 0.08), transparent 28rem);
  border-bottom: 1px solid var(--line);
}

.hero::after {
  content: "";
  position: absolute;
  left: clamp(18px, 4vw, 34px);
  right: clamp(18px, 4vw, 34px);
  bottom: 0;
  z-index: -1;
  height: 1px;
  background: rgba(77, 216, 232, 0.3);
}

.hero-bolt {
  position: absolute;
  z-index: 0;
  top: 70px;
  right: clamp(330px, 34vw, 480px);
  width: clamp(250px, 24vw, 360px);
  opacity: 0.88;
  filter: drop-shadow(0 0 42px rgba(77, 216, 232, 0.28));
  pointer-events: none;
}

.hero-content,
.hero-panel,
.hero-side {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(58px, 8.2vw, 108px);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.2;
}

.hero-lead {
  max-width: 760px;
  color: #d4e5ed;
  font-size: clamp(18px, 2.4vw, 25px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.button:disabled {
  opacity: 0.62;
  cursor: wait;
}

.primary {
  color: #031119;
  background: linear-gradient(135deg, var(--cyan), #8ff4f6);
  box-shadow: 0 0 30px rgba(77, 216, 232, 0.2);
}

.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--line);
}

.hero-panel {
  display: grid;
  gap: 12px;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.32);
}

.metric {
  padding: 18px;
  border-left: 3px solid var(--cyan);
  background: rgba(255, 255, 255, 0.035);
  border-radius: 6px;
}

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

.metric strong {
  margin-bottom: 4px;
  font-size: 23px;
}

.metric span {
  color: var(--muted);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 92px clamp(18px, 4vw, 34px);
}

.about {
  padding-top: 78px;
}

.about .section-heading {
  max-width: 980px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.about-grid article {
  min-height: 180px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(77, 216, 232, 0.08), rgba(13, 35, 52, 0.96)),
    var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.section-heading p,
.contact-copy p {
  color: var(--muted);
  font-size: 18px;
}

.contact-form,
.download-card {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 36px;
}

.related-system {
  padding-top: 44px;
}

.related-system .section-heading {
  margin-bottom: 20px;
}

.documents-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.register-documents {
  padding-top: 44px;
}

.register-documents .section-heading {
  max-width: 980px;
}

.document-card {
  min-height: 230px;
}

.document-card h3 {
  max-width: 520px;
}

.document-groups {
  display: grid;
  gap: 52px;
}

.document-group > h3 {
  margin-bottom: 16px;
  color: var(--cyan);
}

.document-download {
  width: 100%;
  color: inherit;
  text-align: left;
  text-decoration: none;
  font: inherit;
  appearance: none;
  cursor: pointer;
}

.download-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 190px;
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.download-card:hover,
.download-card:focus-visible {
  border-color: rgba(77, 216, 232, 0.72);
  transform: translateY(-2px);
}

.download-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  margin-bottom: 34px;
  padding: 6px 10px;
  color: #031119;
  background: var(--cyan);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.download-badge::before {
  content: "";
  width: 13px;
  height: 13px;
  background: currentColor;
  clip-path: path("M6 1a1 1 0 0 1 1 1v5.1l1.7-1.7a1 1 0 1 1 1.4 1.4L6.7 10.2a1 1 0 0 1-1.4 0L1.9 6.8a1 1 0 1 1 1.4-1.4L5 7.1V2a1 1 0 0 1 1-1ZM2 12a1 1 0 0 1 1-1h6a1 1 0 1 1 0 2H3a1 1 0 0 1-1-1Z");
}

.download-card p {
  margin-bottom: 20px;
  color: var(--muted);
}

.download-card strong {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  color: var(--cyan);
  font-size: 14px;
}

.download-card strong::after {
  content: "";
  width: 13px;
  height: 13px;
  background: currentColor;
  clip-path: path("M6 1a1 1 0 0 1 1 1v5.1l1.7-1.7a1 1 0 1 1 1.4 1.4L6.7 10.2a1 1 0 0 1-1.4 0L1.9 6.8a1 1 0 1 1 1.4-1.4L5 7.1V2a1 1 0 0 1 1-1ZM2 12a1 1 0 0 1 1-1h6a1 1 0 1 1 0 2H3a1 1 0 0 1-1-1Z");
}

.contact {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(300px, 0.58fr);
  gap: 42px;
  align-items: start;
  max-width: var(--max);
  margin: 0 auto;
  padding: 92px clamp(18px, 4vw, 34px);
  background: linear-gradient(90deg, rgba(6, 17, 27, 0.96), rgba(7, 21, 33, 0.82));
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 24px;
}

label span {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 14px;
}

input {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  color: var(--text);
  background: rgba(2, 12, 19, 0.72);
  border: 1px solid rgba(157, 181, 196, 0.32);
  border-radius: 6px;
  font: inherit;
}

input:focus {
  outline: 2px solid rgba(77, 216, 232, 0.45);
  border-color: var(--cyan);
}

.form-note {
  min-height: 24px;
  margin: 0;
  color: var(--cyan);
}

.form-note.error {
  color: var(--danger);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(18px, 4vw, 56px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.portal {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 92px clamp(18px, 4vw, 34px);
  overflow: hidden;
}

.portal-bolt {
  position: absolute;
  top: 42px;
  right: clamp(20px, 8vw, 120px);
  width: clamp(220px, 28vw, 360px);
  opacity: 0.52;
  filter: drop-shadow(0 0 42px rgba(77, 216, 232, 0.28));
  pointer-events: none;
}

.portal-content {
  position: relative;
  z-index: 1;
  max-width: 920px;
}

.portal-content > p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
  font-size: 20px;
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 42px;
}

.portal-card {
  min-height: 250px;
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(77, 216, 232, 0.08), rgba(13, 35, 52, 0.96)),
    var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.portal-card:hover,
.portal-card:focus-visible {
  border-color: rgba(77, 216, 232, 0.72);
  transform: translateY(-2px);
}

.portal-card span {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--amber);
  font-weight: 800;
}

.portal-card h2 {
  margin-bottom: 12px;
}

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

.document-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

@media (max-width: 920px) {
  .hero,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 680px;
    padding-top: 72px;
  }

  .about-grid,
  .portal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: auto;
    padding-bottom: 56px;
  }

  .hero::before {
    background: radial-gradient(circle at 62% 16%, rgba(77, 216, 232, 0.08), transparent 18rem);
  }

  .hero-bolt {
    top: 42px;
    right: 18px;
    width: 230px;
    opacity: 0.42;
  }

  .about-grid,
  .documents-grid,
  .portal-grid {
    grid-template-columns: 1fr;
  }

  .section,
  .contact {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .footer {
    flex-direction: column;
  }
}