:root {
  color-scheme: dark;
  --bg: #0f1115;
  --bg-deep: #080a0d;
  --surface: #151922;
  --surface-2: #181d26;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(0, 242, 255, 0.28);
  --text: #f4f7fa;
  --muted: #9ba4b0;
  --soft: #c9d2dc;
  --accent: #00f2ff;
  --accent-2: #00ced1;
  --violet: rgba(123, 97, 255, 0.18);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --radius: 8px;
  --pill: 999px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg-deep);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(15, 17, 21, 0.88), #0f1115 34%, #080a0d 100%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.028) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 84px),
    var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(120deg, rgba(0, 242, 255, 0.08), transparent 32%),
    linear-gradient(250deg, rgba(123, 97, 255, 0.08), transparent 38%);
  mask-image: linear-gradient(180deg, #000, transparent 78%);
}

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

img,
svg {
  max-width: 100%;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.page {
  position: relative;
  isolation: isolate;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(8, 10, 13, 0.72);
  backdrop-filter: blur(18px);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 760;
  color: var(--text);
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(0, 242, 255, 0.34);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(0, 242, 255, 0.16), rgba(255, 255, 255, 0.04));
  box-shadow: 0 0 24px rgba(0, 242, 255, 0.12);
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover,
.doc-nav a:hover,
.footer-links a:hover {
  color: var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-link {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  padding: 0 14px;
  color: var(--soft);
  font-size: 14px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  padding: 0 18px;
  color: var(--text);
  font-weight: 720;
  line-height: 1;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

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

.button-primary {
  border-color: rgba(0, 242, 255, 0.45);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #051115;
  box-shadow: 0 16px 44px rgba(0, 242, 255, 0.18);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.04);
}

.button-secondary:hover,
.lang-link:hover {
  border-color: rgba(0, 242, 255, 0.35);
  background: rgba(0, 242, 255, 0.08);
}

.hero {
  position: relative;
  min-height: 760px;
  overflow: hidden;
  padding: 76px 0 58px;
}

.hero-scene {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-line {
  position: absolute;
  inset: 13% -8% auto auto;
  width: 72vw;
  min-width: 720px;
  height: 420px;
  border: 1px solid rgba(0, 242, 255, 0.13);
  transform: rotate(-8deg);
  opacity: 0.75;
}

.hero-line::before,
.hero-line::after {
  content: "";
  position: absolute;
  inset: 48% 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 242, 255, 0.42), transparent);
}

.hero-line::after {
  inset: 16% 20% auto 8%;
}

.hero-mockup {
  position: absolute;
  top: 86px;
  right: max(24px, calc((100vw - var(--max)) / 2));
  width: min(540px, 46vw);
  min-height: 520px;
  opacity: 0.94;
}

.signal-card,
.phone-card,
.flow-card {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(24, 29, 38, 0.88), rgba(11, 14, 19, 0.9));
  box-shadow: var(--shadow);
}

.signal-card {
  top: 0;
  right: 18px;
  width: 330px;
  padding: 18px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.mini-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 730;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(0, 242, 255, 0.8);
}

.status-pill {
  border: 1px solid rgba(0, 242, 255, 0.28);
  border-radius: var(--pill);
  padding: 5px 10px;
  color: var(--accent);
  font-size: 12px;
}

.bot-message {
  margin: 0 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--soft);
  font-size: 14px;
}

.bot-message strong {
  color: var(--text);
}

.mini-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mini-action {
  border: 1px solid rgba(0, 242, 255, 0.16);
  border-radius: var(--radius);
  padding: 10px;
  color: var(--accent);
  background: rgba(0, 242, 255, 0.06);
  font-size: 13px;
  font-weight: 680;
  text-align: center;
}

.phone-card {
  top: 210px;
  right: 86px;
  width: 260px;
  padding: 16px;
}

.phone-screen {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(0, 242, 255, 0.11), transparent 38%),
    #0c1016;
  padding: 18px;
}

.phone-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 12px;
}

.connection-ring {
  display: grid;
  width: 116px;
  height: 116px;
  place-items: center;
  margin: 0 auto 20px;
  border: 1px solid rgba(0, 242, 255, 0.38);
  border-radius: 50%;
  box-shadow:
    inset 0 0 36px rgba(0, 242, 255, 0.08),
    0 0 50px rgba(0, 242, 255, 0.16);
}

.connection-ring span {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: #061114;
  font-weight: 840;
}

.phone-label {
  margin: 0;
  color: var(--text);
  font-weight: 720;
  text-align: center;
}

.phone-note {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.flow-card {
  top: 384px;
  right: 244px;
  width: 235px;
  padding: 14px;
}

.flow-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--soft);
  font-size: 13px;
}

.flow-row + .flow-row {
  margin-top: 10px;
}

.flow-icon {
  display: grid;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  place-items: center;
  border-radius: var(--radius);
  background: rgba(0, 242, 255, 0.1);
  color: var(--accent);
}

.hero-content {
  max-width: 650px;
  padding-top: 42px;
}

.hero h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(44px, 7vw, 86px);
  font-weight: 820;
  line-height: 0.96;
}

.accent-text {
  color: var(--accent);
}

.hero-copy {
  max-width: 600px;
  margin: 28px 0 0;
  color: var(--soft);
  font-size: clamp(18px, 2vw, 22px);
}

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

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.meta-chip {
  border: 1px solid var(--line);
  border-radius: var(--pill);
  padding: 8px 12px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.035);
  font-size: 14px;
}

.section {
  padding: 88px 0;
}

.section-tight {
  padding-top: 54px;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 26px;
  margin-bottom: 32px;
}

.section h2,
.doc-content h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.06;
}

.section-lead,
.doc-lead {
  max-width: 660px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.step,
.tariff-card,
.feature-card,
.support-panel,
.faq-item,
.doc-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(24, 29, 38, 0.78), rgba(12, 15, 20, 0.82));
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.22);
}

.step {
  min-height: 180px;
  padding: 20px;
}

.step-number {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(0, 242, 255, 0.28);
  border-radius: var(--radius);
  color: var(--accent);
  font-weight: 780;
}

.step h3,
.tariff-card h3,
.feature-card h3,
.support-panel h3,
.faq-item h3,
.doc-card h2 {
  margin: 18px 0 8px;
  color: var(--text);
  font-size: 20px;
  line-height: 1.2;
}

.step p,
.tariff-card p,
.feature-card p,
.support-panel p,
.faq-item p,
.doc-card p,
.doc-card li {
  margin: 0;
  color: var(--muted);
}

.tariffs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.tariff-card {
  position: relative;
  min-height: 306px;
  padding: 22px;
  overflow: hidden;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.tariff-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 24px 70px rgba(0, 242, 255, 0.08);
}

.tariff-card.is-featured {
  border-color: rgba(0, 242, 255, 0.34);
}

.tariff-card.is-best {
  background:
    linear-gradient(180deg, rgba(0, 242, 255, 0.09), rgba(24, 29, 38, 0.72) 34%, rgba(12, 15, 20, 0.9)),
    var(--surface);
}

.tag {
  display: inline-flex;
  border: 1px solid rgba(0, 242, 255, 0.22);
  border-radius: var(--pill);
  padding: 6px 10px;
  color: var(--accent);
  background: rgba(0, 242, 255, 0.06);
  font-size: 12px;
  font-weight: 720;
}

.price {
  margin: 28px 0 14px;
  color: var(--text);
  font-size: 36px;
  font-weight: 830;
}

.price small {
  color: var(--muted);
  font-size: 15px;
  font-weight: 580;
}

.tariff-list {
  display: grid;
  gap: 9px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.tariff-list li {
  color: var(--soft);
  font-size: 14px;
}

.tariff-list li::before {
  content: "•";
  margin-right: 8px;
  color: var(--accent);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 36px;
  align-items: center;
}

.happ-panel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  background: linear-gradient(145deg, rgba(24, 29, 38, 0.82), rgba(9, 12, 17, 0.9));
  overflow: hidden;
}

.happ-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent, rgba(0, 242, 255, 0.12), transparent),
    linear-gradient(180deg, transparent, rgba(123, 97, 255, 0.06));
  transform: translateX(-70%);
  animation: sweep 6s ease-in-out infinite;
  pointer-events: none;
}

.happ-window {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: #0b0e13;
  padding: 20px;
}

.window-bar {
  display: flex;
  gap: 7px;
  margin-bottom: 22px;
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}

.route-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.route-row + .route-row {
  margin-top: 10px;
}

.route-title {
  color: var(--text);
  font-weight: 720;
}

.route-sub {
  color: var(--muted);
  font-size: 13px;
}

.route-state {
  border-radius: var(--pill);
  padding: 6px 10px;
  background: rgba(0, 242, 255, 0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 720;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.feature-card {
  padding: 22px;
}

.support-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 28px;
}

.support-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.faq-item {
  padding: 22px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 34px 0;
  background: rgba(8, 10, 13, 0.74);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

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

.doc-hero {
  padding: 76px 0 28px;
}

.doc-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0 86px;
}

.doc-nav {
  position: sticky;
  top: 96px;
  align-self: start;
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(24, 29, 38, 0.58);
}

.doc-nav a {
  border-radius: var(--radius);
  padding: 10px;
  color: var(--muted);
}

.doc-nav a.is-active {
  background: rgba(0, 242, 255, 0.08);
  color: var(--accent);
}

.doc-content {
  display: grid;
  gap: 14px;
}

.doc-card {
  padding: 26px;
}

.doc-card h2 {
  margin-top: 0;
}

.doc-card p + p,
.doc-card ul + p,
.doc-card p + ul {
  margin-top: 12px;
}

.doc-card ul {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding-left: 20px;
}

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

.is-js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

.is-js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

.hero-content,
.signal-card,
.phone-card,
.flow-card {
  animation: heroIn 720ms ease both;
}

.signal-card {
  animation-delay: 80ms;
}

.phone-card {
  animation-delay: 180ms;
}

.flow-card {
  animation-delay: 280ms;
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes sweep {
  0%,
  45% {
    transform: translateX(-80%);
  }
  70%,
  100% {
    transform: translateX(80%);
  }
}

@media (max-width: 1040px) {
  .nav-links {
    display: none;
  }

  .hero {
    display: flex;
    flex-direction: column;
    min-height: auto;
    padding: 68px 0 64px;
    overflow: hidden;
  }

  .hero > .container {
    order: 1;
  }

  .hero-content {
    max-width: 760px;
  }

  .hero-scene {
    position: relative;
    inset: auto;
    order: 2;
    z-index: 0;
    width: min(100% - 40px, 720px);
    height: 540px;
    margin: 38px auto 0;
    overflow: visible;
  }

  .hero-line {
    inset: 7% auto auto 2%;
    width: 760px;
    min-width: 760px;
    height: 370px;
  }

  .hero-mockup {
    position: relative;
    top: auto;
    right: auto;
    width: min(100%, 620px);
    min-height: 510px;
    margin: 0 auto;
  }

  .steps,
  .tariffs {
    grid-template-columns: repeat(2, 1fr);
  }

  .split,
  .support-panel,
  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-nav {
    position: static;
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, var(--max));
  }

  .nav {
    min-height: 64px;
  }

  .nav-actions .button {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 54px 0 58px;
  }

  .hero-scene {
    width: min(100% - 28px, 390px);
    height: auto;
    margin-top: 28px;
    overflow: visible;
  }

  .hero-line {
    inset: 5% auto auto 0;
    width: 560px;
    min-width: 560px;
    height: 310px;
  }

  .hero h1 {
    font-size: clamp(40px, 13vw, 58px);
  }

  .hero-copy,
  .section-lead,
  .doc-lead {
    font-size: 16px;
  }

  .hero-actions,
  .support-links {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .hero-mockup {
    display: grid;
    gap: 12px;
    width: 100%;
    min-height: 0;
  }

  .signal-card,
  .phone-card,
  .flow-card {
    position: relative;
    inset: auto;
    width: 100%;
  }

  .phone-card {
    padding: 14px;
  }

  .flow-card {
    padding: 14px;
  }

  .phone-screen {
    padding: 16px;
  }

  .connection-ring {
    width: 96px;
    height: 96px;
    margin-bottom: 16px;
  }

  .connection-ring span {
    width: 48px;
    height: 48px;
  }

  .section {
    padding: 64px 0;
  }

  .section-head {
    display: block;
  }

  .steps,
  .tariffs,
  .feature-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    display: grid;
  }

  .doc-nav {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}