.seo-page {
  margin: 0;
  min-height: 100vh;
  --glow-x: 82%;
  --glow-y: 18%;

  background:
    radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(116, 255, 31, 0.24), transparent 28%),
    radial-gradient(circle at var(--glow-x) var(--glow-y), rgba(116, 255, 31, 0.08), transparent 42%),
    #030506;
  color: #ffffff;
  overflow-x: hidden;
  font-family: "Montserrat", sans-serif;
}

.seo-page * {
  box-sizing: border-box;
}

.seo-header {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 30px 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  position: relative;
  z-index: 5;
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: #fff;
  text-decoration: none;
  font-weight: 800;
}

.seo-brand img {
  width: 46px;
  height: 46px;
  border-radius: 12px;
}

.seo-nav {
  display: flex;
  align-items: center;
  gap: 62px;
}

.seo-nav a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.seo-lang {
  justify-self: end;
  padding: 12px 18px;
  border: 1px solid rgba(116, 255, 31, 0.75);
  border-radius: 12px;
  color: #fff;
  font-weight: 800;
  box-shadow: 0 0 22px rgba(116, 255, 31, 0.12);
}

.seo-hero {
  position: relative;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 40px 0 66px;
  text-align: center;
}

.seo-hero::after {
  content: "";
  position: absolute;
  right: -220px;
  top: 10px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(116, 255, 31, 0.2), transparent 65%);
  filter: blur(8px);
  pointer-events: none;
}

.seo-hero h1 {
  max-width: 850px;
  margin: 0 auto 28px;
  font-size: clamp(46px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0.1em;
  font-weight: 900;
  text-transform: uppercase;
}

.seo-hero p {
  max-width: 690px;
  margin: 0 auto 38px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 22px;
  line-height: 1.45;
}

.seo-buttons {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
}

.os-download-btn {
  width: 320px;
  height: 86px;
  padding: 0 24px;

  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;

  border: 1px solid #898989;
  border-radius: 12px;

  background:
    linear-gradient(135deg, rgba(255,255,255,0.10), rgba(255,255,255,0.025)),
    rgba(255,255,255,0.035);

  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);

  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.12),
    0 18px 50px rgba(0,0,0,0.18);

  text-decoration: none;
  transition: 0.22s ease;
}

.os-download-icon {
  width: 48px;
  height: 48px;
  flex: 0 0 48;
  background: linear-gradient(270deg, #ffffff 0%, #c2c2c2 100%);
  mask-repeat: no-repeat;
  mask-position: center;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  -webkit-mask-size: contain;
}

.os-download-icon--windows {
  mask-image: url("/assets/icons/windows-download.svg");
  -webkit-mask-image: url("/assets/icons/windows-download.svg");
}

.os-download-icon--apple {
  mask-image: url("/assets/icons/apple-download.svg");
  -webkit-mask-image: url("/assets/icons/apple-download.svg");
}

.os-download-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  line-height: 1;
}

.os-download-small {
  color: #ffffff;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.os-download-big {
  margin-top: 6px;
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 0.08em;
  background: linear-gradient(270deg, #ffffff 0%, #c2c2c2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.os-download-btn:hover {
  border-color: #77d82e;
  box-shadow:
    0 0 28px rgba(119, 216, 46, 0.45),
    0 0 70px rgba(119, 216, 46, 0.22);
  transform: translateY(-2px);
}

.os-download-btn:hover .os-download-icon {
  background: #77d82e;
}

.os-download-btn:hover .os-download-small,
.os-download-btn:hover .os-download-big {
  color: #77d82e;
  background: none;
  -webkit-background-clip: initial;
  background-clip: initial;
}


.seo-content {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 34px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.seo-card,
.seo-final {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018)),
    rgba(8, 10, 12, 0.92);
  box-shadow:
    0 22px 70px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.seo-card::before,
.seo-final::before {
  content: "";
  position: absolute;
  inset: -1px;
  background: radial-gradient(circle at 86% 20%, rgba(116, 255, 31, 0.16), transparent 38%);
  pointer-events: none;
}

.seo-card {
  padding: 48px;
}

.seo-card--split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 54px;
  align-items: center;
}

.seo-card--visual {
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.seo-icon {
  width: 70px;
  height: 70px;
  margin-bottom: 26px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(116, 255, 31, 0.13);
  border: 1px solid rgba(116, 255, 31, 0.48);
  color: #a9ff39;
  font-size: 34px;
  font-weight: 900;
  box-shadow: 0 0 25px rgba(116, 255, 31, 0.12);
}

.seo-card h2,
.seo-final h2 {
  margin: 0 0 24px;
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1.08;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.seo-card p,
.seo-card li {
  color: rgba(255, 255, 255, 0.76);
  font-size: 20px;
  line-height: 1.58;
}

.seo-card ul {
  margin: 0;
  padding-left: 24px;
}

.seo-card li::marker {
  color: #a9ff39;
}

.seo-preview-card {
  position: relative;
  z-index: 2;
  padding: 18px;
  border-radius: 22px;
  background: rgba(2, 3, 4, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

.seo-preview-search {
  height: 42px;
  padding: 0 18px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
}

.seo-preview-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 14px;
}

.seo-preview-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.seo-preview-list div {
  min-height: 62px;
  padding: 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.045);
  color: rgba(255, 255, 255, 0.74);
  font-size: 12px;
  line-height: 1.35;
}

.seo-preview-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.seo-preview-images div {
  min-height: 82px;
  border-radius: 14px;
  background:
    radial-gradient(circle at 40% 35%, rgba(169, 255, 57, 0.65), transparent 34%),
    linear-gradient(135deg, #101418, #030506);
  border: 1px solid rgba(116, 255, 31, 0.18);
}

.seo-visual-badge {
  width: 180px;
  height: 180px;
  flex: 0 0 auto;
  border-radius: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(14deg);
  background:
    radial-gradient(circle at 34% 28%, rgba(169, 255, 57, 0.5), transparent 30%),
    linear-gradient(145deg, #1b2118, #050606);
  border: 1px solid rgba(116, 255, 31, 0.45);
  color: #a9ff39;
  font-size: 92px;
  font-weight: 900;
  box-shadow: 0 28px 70px rgba(116, 255, 31, 0.12);
}

.seo-visual-badge--search {
  border-radius: 50%;
  font-size: 110px;
}

.seo-final {
  padding: 56px 42px;
  text-align: center;
  border-color: rgba(116, 255, 31, 0.6);
}

.seo-final .seo-download-btn {
  min-width: 370px;
}

.seo-footer {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 44px 0 34px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
  gap: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.seo-footer strong {
  display: block;
  margin-bottom: 14px;
  color: #fff;
}

.seo-footer p,
.seo-footer a {
  display: block;
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
}

@media (max-width: 860px) {
  .seo-header {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .seo-nav {
    gap: 22px;
    flex-wrap: wrap;
  }

  .seo-lang {
    justify-self: start;
  }

  .seo-card--split,
  .seo-card--visual,
  .seo-footer {
    grid-template-columns: 1fr;
    display: grid;
  }

  .seo-visual-badge {
    display: none;
  }

  .seo-download-btn,
  .seo-final .seo-download-btn {
    min-width: 100%;
  }

  .seo-card {
    padding: 30px;
  }
}

.seo-buttons {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 999px;
  background: rgba(119, 216, 46, 0.55);
  box-shadow: 0 0 12px rgba(119, 216, 46, 0.7);
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  from {
    transform: translate3d(0, 0, 0);
    opacity: 0;
  }

  15% {
    opacity: 1;
  }

  85% {
    opacity: 1;
  }

  to {
    transform: translate3d(var(--move-x), var(--move-y), 0);
    opacity: 0;
  }
}

.seo-header,
main,
.seo-footer {
  position: relative;
  z-index: 2;
}

.seo-download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;

  padding: 18px 28px;
  border-radius: 14px;

  border: 1px solid rgba(116,255,31,0.5);
  color: #fff;
  text-decoration: none;

  background:
    linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02)),
    rgba(255,255,255,0.03);

  backdrop-filter: blur(14px);

  transition: 0.2s ease;
}

.seo-download-btn img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}