:root {
  --navy: #082b68;
  --blue: #0a72f5;
  --sky: #69b7ff;
  --cyan: #24d5ee;
  --deep: #061735;
  --ink: #0f1f3d;
  --muted: #8fa9ca;
  --line: rgba(116, 190, 255, .22);
  --soft: #edf7ff;
  --white: #ffffff;
  --shadow: 0 26px 80px rgba(2, 14, 42, .28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #dcecff;
  background:
    radial-gradient(circle at 18% 10%, rgba(10, 114, 245, .26), transparent 30%),
    radial-gradient(circle at 82% 4%, rgba(36, 213, 238, .16), transparent 28%),
    linear-gradient(rgba(105, 183, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(105, 183, 255, .045) 1px, transparent 1px),
    #061026;
  background-size: auto, auto, 44px 44px, 44px 44px, auto;
  line-height: 1.6;
}

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

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

.site-header {
  position: relative;
  min-height: 84vh;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 22%, rgba(36, 213, 238, .22), transparent 27%),
    radial-gradient(circle at 25% 8%, rgba(10, 114, 245, .34), transparent 34%),
    linear-gradient(120deg, rgba(3, 9, 29, .98), rgba(5, 36, 88, .94) 55%, rgba(10, 114, 245, .62)),
    repeating-linear-gradient(90deg, rgba(105, 183, 255, .105) 0 1px, transparent 1px 78px),
    repeating-linear-gradient(0deg, rgba(36, 213, 238, .07) 0 1px, transparent 1px 78px);
  overflow: hidden;
}

.site-header::after {
  content: "";
  position: absolute;
  inset: 92px 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .65), transparent);
}

.nav {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  width: 218px;
  min-height: 84px;
  display: grid;
  place-items: center;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid rgba(105, 183, 255, .32);
  background:
    linear-gradient(135deg, rgba(4, 17, 47, .94), rgba(8, 43, 104, .58)),
    rgba(4, 14, 38, .72);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, .04) inset,
    0 12px 30px rgba(0, 0, 0, .24),
    0 0 30px rgba(36, 213, 238, .18);
  backdrop-filter: blur(12px);
}

.brand img {
  width: 100%;
  filter:
    contrast(1.18)
    brightness(1.42)
    saturate(1.3)
    drop-shadow(0 2px 0 rgba(255, 255, 255, .55))
    drop-shadow(0 0 13px rgba(36, 213, 238, .58))
    drop-shadow(0 8px 18px rgba(0, 0, 0, .55));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-weight: 700;
  font-size: 14px;
}

.nav-links a {
  opacity: .9;
}

.nav-links a:hover {
  opacity: 1;
  color: #8defff;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, .34);
  border-radius: 8px;
  background: rgba(255, 255, 255, .08);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--white);
}

.hero {
  width: min(1180px, calc(100% - 32px));
  min-height: calc(84vh - 92px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  align-items: center;
  gap: 56px;
  padding: 52px 0 96px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  font-size: 13px;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-text {
  max-width: 660px;
  margin-bottom: 34px;
  font-size: 20px;
  color: rgba(226, 241, 255, .9);
}

.hero-actions,
.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.primary {
  color: var(--white);
  background: linear-gradient(135deg, #0969e8, #24d5ee);
  box-shadow: 0 0 30px rgba(36, 213, 238, .28);
}

.secondary {
  color: var(--white);
  border: 1px solid rgba(141, 239, 255, .34);
  background: rgba(7, 36, 82, .62);
}

.hero-panel {
  position: relative;
  display: grid;
  gap: 16px;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: -80px -70px;
  background: url("assets/osenetgo-logo-transparent.png") center / contain no-repeat;
  opacity: .1;
}

.signal-card {
  position: relative;
  padding: 24px;
  border: 1px solid rgba(105, 183, 255, .28);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .11), rgba(36, 213, 238, .055)),
    rgba(4, 18, 48, .72);
  backdrop-filter: blur(10px);
  box-shadow: 0 0 34px rgba(10, 114, 245, .16);
}

.signal-card span {
  display: block;
  color: rgba(255, 255, 255, .72);
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 800;
}

.signal-card strong {
  display: block;
  margin-top: 4px;
  font-size: 34px;
  line-height: 1.1;
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 88px 0;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 34px;
}

.section-heading.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

h2 {
  margin-bottom: 14px;
  color: #f7fbff;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  color: #f7fbff;
  font-size: 22px;
  line-height: 1.2;
}

.service-grid,
.package-grid,
.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.service-grid article,
.step-list article {
  padding: 30px;
  border: 1px solid rgba(105, 183, 255, .22);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(9, 35, 82, .88), rgba(5, 18, 47, .96));
  box-shadow: 0 0 32px rgba(10, 114, 245, .12);
}

.service-grid article p,
.step-list article p,
.section-heading p {
  color: #b7c9df;
}

.icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-size: 25px;
}

.packages {
  width: 100%;
  padding-left: max(16px, calc((100vw - 1180px) / 2));
  padding-right: max(16px, calc((100vw - 1180px) / 2));
  background:
    linear-gradient(rgba(105, 183, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(105, 183, 255, .045) 1px, transparent 1px),
    linear-gradient(180deg, #08204b, #061026);
  background-size: 36px 36px, 36px 36px, auto;
}

.price-card {
  position: relative;
  min-height: 510px;
  display: flex;
  flex-direction: column;
  padding: 32px;
  border-radius: 8px;
  color: var(--white);
  border: 1px solid rgba(105, 183, 255, .3);
  background:
    linear-gradient(180deg, rgba(8, 76, 168, .82), rgba(5, 19, 55, .97)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .08) 0 1px, transparent 1px 58px);
  box-shadow: 0 0 40px rgba(10, 114, 245, .18);
  overflow: hidden;
}

.price-card.featured {
  background:
    linear-gradient(180deg, rgba(10, 114, 245, .94), rgba(5, 22, 64, .98)),
    repeating-linear-gradient(90deg, rgba(34, 211, 238, .1) 0 1px, transparent 1px 58px);
  transform: translateY(-12px);
}

.price-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.badge {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(34, 211, 238, .18);
  font-size: 12px;
  font-weight: 800;
}

.star {
  color: var(--cyan);
  font-size: 42px;
  line-height: 1;
}

.price-card h3 {
  color: var(--white);
  margin-top: 16px;
  text-transform: uppercase;
  font-size: 18px;
}

.price {
  margin: 20px 0 22px;
  font-size: 34px;
  line-height: 1.16;
  font-weight: 800;
}

.price span {
  display: block;
  margin-top: 8px;
  font-size: 18px;
  font-weight: 600;
}

.price-card ul {
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.price-card li {
  padding: 9px 0;
  color: rgba(255, 255, 255, .9);
}

.package-button {
  width: 100%;
  margin-top: auto;
  color: var(--white);
  border: 1px solid rgba(34, 211, 238, .36);
  background: linear-gradient(135deg, #075cde, #22d3ee);
}

.steps {
  padding-top: 78px;
}

.step-list span {
  display: block;
  color: var(--blue);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 18px;
}

.cta {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto 86px;
  justify-content: space-between;
  padding: 36px;
  border-radius: 8px;
  color: var(--white);
  border: 1px solid rgba(105, 183, 255, .28);
  background:
    linear-gradient(135deg, rgba(6, 33, 82, .98), rgba(10, 114, 245, .78)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .12) 0 1px, transparent 1px 64px);
  box-shadow: 0 0 42px rgba(10, 114, 245, .18);
}

.cta h2 {
  color: var(--white);
  margin-bottom: 0;
}

.footer {
  display: grid;
  grid-template-columns: 1.2fr 1fr .8fr;
  gap: 36px;
  padding: 54px max(16px, calc((100vw - 1180px) / 2));
  color: rgba(255, 255, 255, .84);
  border-top: 1px solid rgba(34, 211, 238, .18);
  background:
    linear-gradient(180deg, #061026, #030816);
}

.footer img {
  width: 226px;
  margin-bottom: 18px;
  padding: 10px 14px;
  border: 1px solid rgba(105, 183, 255, .28);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(4, 17, 47, .94), rgba(8, 43, 104, .52)),
    rgba(4, 14, 38, .72);
  filter:
    contrast(1.18)
    brightness(1.42)
    saturate(1.3)
    drop-shadow(0 2px 0 rgba(255, 255, 255, .5))
    drop-shadow(0 0 14px rgba(36, 213, 238, .48))
    drop-shadow(0 8px 18px rgba(0, 0, 0, .55));
}

.footer strong {
  display: block;
  color: var(--white);
  margin-bottom: 10px;
}

.footer a,
.footer address {
  display: block;
  font-style: normal;
}

.float-wa {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 20;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--white);
  background: linear-gradient(135deg, #12b76a, #22d3ee);
  box-shadow: 0 0 26px rgba(34, 211, 238, .34);
  font-weight: 900;
}

@media (max-width: 860px) {
  .menu-toggle {
    display: block;
  }

  .nav {
    position: relative;
  }

  .nav-links {
    position: absolute;
    top: 82px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border-radius: 8px;
    color: var(--white);
    border: 1px solid rgba(105, 183, 255, .28);
    background: rgba(4, 18, 48, .96);
    box-shadow: var(--shadow), 0 0 24px rgba(36, 213, 238, .14);
    backdrop-filter: blur(12px);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 28px;
  }

  .hero-panel {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .package-grid,
  .step-list,
  .footer {
    grid-template-columns: 1fr;
  }

  .price-card.featured {
    transform: none;
  }

  .cta {
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .brand {
    width: 178px;
    min-height: 72px;
    padding: 8px 10px;
  }

  .footer img {
    width: 190px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-text {
    font-size: 17px;
  }

  .section {
    padding: 64px 0;
  }

  .price-card,
  .service-grid article,
  .step-list article,
  .cta {
    padding: 24px;
  }
}