:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --ink: #111827;
  --muted: #64748b;
  --line: #dbe3ef;
  --blue: #2563eb;
  --cyan: #06b6d4;
  --green: #14b8a6;
  --dark: #07111f;
  --dark-2: #0d1b2f;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 6vw;
  background: rgba(7, 17, 31, 0.9);
  color: #fff;
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand,
.site-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 0 24px rgba(6, 182, 212, 0.32);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-nav {
  gap: 28px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
}

.site-nav a:hover {
  color: #fff;
}

.nav-cta {
  padding: 10px 16px;
  border-radius: 8px;
  color: #fff !important;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: transparent;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: #fff;
}

.section,
.hero {
  padding: 88px 6vw;
}

.section-dark {
  background:
    radial-gradient(circle at 20% 15%, rgba(37, 99, 235, 0.38), transparent 34%),
    radial-gradient(circle at 85% 20%, rgba(6, 182, 212, 0.3), transparent 30%),
    linear-gradient(135deg, var(--dark), var(--dark-2));
  color: #fff;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 56px;
  align-items: center;
  min-height: calc(100vh - 72px);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.7), transparent);
}

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

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

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.12;
  text-wrap: balance;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
}

h3 {
  font-size: 20px;
}

.hero-copy,
.section-heading p,
.referral-copy p,
.contact-panel p {
  color: var(--muted);
}

.hero-copy {
  max-width: 700px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 32px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 16px 34px rgba(37, 99, 235, 0.28);
}

.button.secondary {
  color: #e0f2fe;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
}

.button.channel-button {
  color: #07111f;
  background: #67e8f9;
  box-shadow: 0 12px 28px rgba(6, 182, 212, 0.2);
}

.button.secondary.dark {
  color: var(--ink);
  border-color: var(--line);
  background: #fff;
}

.button.full {
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 640px;
}

.hero-stats div {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.hero-stats strong,
.hero-stats span {
  display: block;
}

.hero-stats strong {
  font-size: 22px;
}

.hero-stats span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  min-height: 500px;
}

.chat-window {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  background: rgba(10, 22, 38, 0.88);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.32);
}

.window-top {
  display: flex;
  gap: 8px;
  padding: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.window-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
}

.window-top span:nth-child(2) {
  background: #fbbf24;
}

.window-top span:nth-child(3) {
  background: #22c55e;
}

.chat-layout {
  display: grid;
  grid-template-columns: 165px 1fr;
  min-height: 390px;
}

.contact-list {
  padding: 18px 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.search-line {
  height: 32px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.contact {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  margin-bottom: 8px;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}

.contact.active {
  color: #fff;
  background: rgba(37, 99, 235, 0.28);
}

.contact i {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.conversation {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 26px;
}

.message {
  max-width: 82%;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 14px;
}

.incoming {
  align-self: flex-start;
  color: #dbeafe;
  background: rgba(255, 255, 255, 0.09);
}

.outgoing {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--blue), var(--green));
}

.composer {
  display: flex;
  gap: 12px;
  margin-top: auto;
  padding: 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.07);
}

.composer span {
  flex: 1;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.composer button {
  border: 0;
  border-radius: 8px;
  padding: 8px 12px;
  color: #fff;
  background: var(--blue);
}

.floating-card {
  position: absolute;
  right: -10px;
  display: grid;
  gap: 2px;
  width: 170px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
}

.floating-card span {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.floating-card.uptime {
  top: 70px;
}

.floating-card.api {
  bottom: 54px;
  left: -18px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-heading.light p {
  color: rgba(255, 255, 255, 0.7);
}

.feature-grid,
.pricing-grid,
.promo-grid {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-spotlight {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.feature-spotlight > div {
  min-height: 190px;
  padding: 26px;
  border: 1px solid rgba(6, 182, 212, 0.22);
  border-radius: 8px;
  color: #fff;
  background:
    radial-gradient(circle at 80% 0%, rgba(6, 182, 212, 0.32), transparent 34%),
    linear-gradient(145deg, #102345, #07111f);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.14);
}

.spotlight-label {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 5px 10px;
  border-radius: 999px;
  color: #cffafe;
  background: rgba(6, 182, 212, 0.16);
  font-size: 12px;
  font-weight: 900;
}

.feature-spotlight strong {
  display: block;
  margin-bottom: 12px;
  font-size: 24px;
  line-height: 1.25;
}

.feature-spotlight p {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
}

.feature-card,
.price-card,
.promo-grid article,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 10px 34px rgba(15, 23, 42, 0.06);
}

.feature-card {
  padding: 24px;
}

.feature-card span {
  color: var(--cyan);
  font-weight: 900;
}

.feature-card p,
.price-card li,
.promo-grid span {
  color: var(--muted);
}

.admin-capabilities {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
  align-items: stretch;
  margin-top: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.admin-copy h3 {
  margin-bottom: 12px;
  font-size: 28px;
  line-height: 1.2;
}

.admin-copy p:last-child {
  color: var(--muted);
}

.admin-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: flex-start;
}

.admin-list span {
  padding: 10px 12px;
  border: 1px solid #dbeafe;
  border-radius: 8px;
  color: #1e3a8a;
  background: #eff6ff;
  font-weight: 800;
  font-size: 14px;
}

.section-muted {
  background: #eef4fb;
}

.pricing-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  max-width: 980px;
}

.price-card {
  display: flex;
  flex-direction: column;
  position: relative;
  padding: 26px;
}

.price-card.featured {
  color: #fff;
  border-color: transparent;
  background:
    radial-gradient(circle at 82% 8%, rgba(6, 182, 212, 0.48), transparent 30%),
    linear-gradient(145deg, #102345, #07111f);
  transform: translateY(-12px);
}

.price-card.featured li {
  color: rgba(255, 255, 255, 0.76);
}

.badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 4px 10px;
  border-radius: 999px;
  color: #cffafe;
  background: rgba(6, 182, 212, 0.2);
  font-size: 12px;
  font-weight: 800;
}

.price {
  margin: 16px 0;
  font-size: 32px;
  font-weight: 900;
}

.price span {
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
}

.price-card.featured .price span {
  color: rgba(255, 255, 255, 0.68);
}

.plan-meta {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
}

.plan-meta span {
  padding: 9px 10px;
  border-radius: 8px;
  background: #f1f5f9;
  color: #334155;
  font-size: 13px;
}

.price-card.featured .plan-meta span {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.78);
}

.plan-desc {
  flex: 1;
  color: var(--muted);
  font-size: 14px;
}

.price-card.featured .plan-desc {
  color: rgba(255, 255, 255, 0.76);
}

.pricing-note {
  margin: 18px 0 0;
  padding: 16px 18px;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 8px;
  color: #1e3a8a;
  background: #eff6ff;
  font-weight: 800;
}

.cost-note {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  max-width: 980px;
  margin: 18px 0 0;
  padding: 18px;
  border: 1px solid rgba(6, 182, 212, 0.24);
  border-radius: 8px;
  background:
    radial-gradient(circle at 100% 0%, rgba(6, 182, 212, 0.16), transparent 30%),
    #eff6ff;
}

.cost-note strong,
.cost-note span {
  padding: 10px 12px;
  border-radius: 8px;
}

.cost-note strong {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

.cost-note span {
  color: #1e3a8a;
  background: #fff;
  font-weight: 800;
}

.compact {
  padding-top: 72px;
  padding-bottom: 72px;
}

.promo-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.promo-grid article {
  display: grid;
  gap: 8px;
  padding: 24px;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: none;
}

.promo-grid strong {
  font-size: 20px;
}

.promo-grid span {
  color: rgba(255, 255, 255, 0.68);
}

.referral {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 42px;
  align-items: center;
}

.contact-panel {
  padding: 30px;
  box-shadow: var(--shadow);
}

.contact-list-lines {
  display: grid;
  gap: 10px;
  margin: 22px 0;
}

.contact-list-lines span {
  padding: 12px;
  border-radius: 8px;
  background: #f1f5f9;
  color: #334155;
}

.contact-actions {
  grid-template-columns: 1fr;
}

.telegram-link {
  width: 100%;
  padding: 14px;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  color: #1e3a8a;
  background: #eff6ff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  text-align: left;
}

.telegram-link:hover {
  border-color: var(--cyan);
  background: #dffafe;
}

.chat-modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  place-items: center;
  padding: 20px;
}

.chat-modal.open {
  display: grid;
}

.chat-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 7, 18, 0.68);
  backdrop-filter: blur(8px);
}

.chat-modal-panel {
  position: relative;
  width: min(440px, 100%);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  color: #fff;
  background:
    radial-gradient(circle at 90% 0%, rgba(6, 182, 212, 0.28), transparent 34%),
    linear-gradient(145deg, #102345, #07111f);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
}

.chat-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  font-size: 22px;
}

.chat-bubble {
  margin: 12px 0;
  padding: 13px 14px;
  border-radius: 12px;
}

.chat-bubble.incoming {
  color: #dbeafe;
  background: rgba(255, 255, 255, 0.09);
}

.chat-bubble.outgoing {
  margin-left: auto;
  max-width: max-content;
  background: linear-gradient(135deg, var(--blue), var(--green));
  font-weight: 900;
}

.modal-copy {
  color: rgba(255, 255, 255, 0.72);
}

.modal-channel {
  display: block;
  margin: 14px 0;
  padding: 12px;
  border: 1px solid rgba(6, 182, 212, 0.28);
  border-radius: 8px;
  color: #cffafe;
  background: rgba(6, 182, 212, 0.12);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 36px 6vw;
  color: rgba(255, 255, 255, 0.74);
  background: #050b14;
}

.site-footer p {
  margin: 6px 0 0;
}

@media (max-width: 1100px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-spotlight,
  .admin-capabilities {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 900px) {
  .site-header {
    min-height: 64px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    right: 6vw;
    left: 6vw;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    background: rgba(7, 17, 31, 0.98);
  }

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

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

  .hero {
    grid-template-columns: 1fr;
    gap: 38px;
    min-height: auto;
    padding-top: 64px;
  }

  .hero-visual {
    min-height: 420px;
  }

  .pricing-grid,
  .promo-grid,
  .referral {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .section,
  .hero {
    padding: 58px 20px;
  }

  .site-header {
    padding: 0 20px;
  }

  h1 {
    font-size: 38px;
  }

  .hero-actions,
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .hero-actions .button {
    width: 100%;
  }

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

  .feature-spotlight > div,
  .admin-capabilities {
    padding: 20px;
  }

  .feature-spotlight strong {
    font-size: 21px;
  }

  .admin-copy h3 {
    font-size: 24px;
  }

  .hero-visual {
    min-height: 0;
  }

  .chat-layout {
    grid-template-columns: 1fr;
  }

  .contact-list {
    display: none;
  }

  .conversation {
    min-height: 330px;
    padding: 18px;
  }

  .floating-card {
    position: static;
    width: auto;
    margin-top: 12px;
  }

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