:root {
  --color-bg: #f3f7fb;
  --color-surface: #ffffff;
  --color-surface-soft: #f7fafd;
  --color-primary: #1689e8;
  --color-primary-dark: #07111f;
  --color-primary-soft: #e8f4ff;
  --color-accent: #22c7ff;
  --color-accent-dark: #0b7fc9;
  --color-text: #111827;
  --color-muted: #5b6675;
  --color-border: #dbe5ef;
  --color-success: #178a65;
  --color-danger: #c24141;
  --shadow-soft: 0 14px 40px rgba(7, 17, 31, 0.09);
  --shadow-card: 0 8px 24px rgba(7, 17, 31, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(
      circle at top left,
      rgba(34, 199, 255, 0.14),
      transparent 32rem
    ),
    radial-gradient(
      circle at top right,
      rgba(22, 137, 232, 0.16),
      transparent 34rem
    ),
    var(--color-bg);
  color: var(--color-text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 17, 31, 0.96);
  color: #ffffff;
  box-shadow: 0 8px 26px rgba(7, 17, 31, 0.22);
}

.header-inner {
  width: min(100% - 32px, var(--container));
  min-height: 74px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  height: 58px;
  display: flex;
  align-items: center;
}



.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.header-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  min-height: 44px;
  padding: 12px 22px;
  border-radius: 999px;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  color: #ffffff;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 10px 22px rgba(22, 137, 232, 0.28);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}

.header-link:hover,
.header-link:focus-visible {
  background: linear-gradient(
    135deg,
    var(--color-accent),
    var(--color-primary)
  );
  box-shadow: 0 14px 28px rgba(34, 199, 255, 0.3);
  transform: translateY(-1px);
  outline: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  min-height: 44px;
  padding: 12px 22px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  color: #ffffff;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(22, 137, 232, 0.28);
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}

.button:hover,
.button:focus-visible {
  background: linear-gradient(
    135deg,
    var(--color-accent),
    var(--color-primary)
  );
  box-shadow: 0 14px 28px rgba(34, 199, 255, 0.3);
  transform: translateY(-1px);
  outline: none;
}

main {
  display: block;
}

.section {
  width: min(100% - 32px, var(--container));
  margin: 28px auto;
  padding: 34px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.hero-section {
  position: relative;
  margin-top: 42px;
  padding: 0;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 78% 16%,
      rgba(34, 199, 255, 0.32),
      transparent 18rem
    ),
    radial-gradient(
      circle at 10% 88%,
      rgba(22, 137, 232, 0.22),
      transparent 20rem
    ),
    linear-gradient(135deg, rgba(7, 17, 31, 0.99), rgba(13, 38, 66, 0.96));
  color: #ffffff;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 22px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: calc(var(--radius-lg) - 4px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(290px, 0.65fr);
  gap: 32px;
  align-items: center;
  padding: 46px 38px;
}

.hero-label {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 18px;
  padding: 8px 14px;
  border: 1px solid rgba(34, 199, 255, 0.42);
  border-radius: 999px;
  background: rgba(34, 199, 255, 0.12);
  color: #bfeeff;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.2;
}

.hero-section h1,
.hero-section p {
  color: #ffffff;
}

.hero-section h1 {
  max-width: 820px;
}

.hero-section p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.hero-actions .button {
  min-width: 190px;
  min-height: 52px;
  font-size: 16px;
}

.hero-note {
  color: rgba(255, 255, 255, 0.74);
  font-size: 14px;
  font-weight: 700;
}

.hero-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.11);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 54px rgba(0, 0, 0, 0.18);
}

.hero-card-title {
  margin: 0 0 16px;
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.24;
}

.hero-stats {
  display: grid;
  gap: 12px;
}

.hero-stat {
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
}

.hero-stat strong {
  display: block;
  color: #7ddfff;
  font-size: 24px;
  line-height: 1.1;
}

.hero-stat span {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  line-height: 1.35;
}

h1 {
  margin: 0 0 22px;
  color: var(--color-primary-dark);
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

h2 {
  margin: 0 0 18px;
  color: var(--color-primary-dark);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

h3 {
  margin: 28px 0 12px;
  color: var(--color-primary);
  font-size: clamp(21px, 3vw, 27px);
  line-height: 1.24;
  letter-spacing: -0.02em;
}

p {
  margin: 0 0 18px;
  color: var(--color-text);
}

ul,
ol {
  margin: 18px 0 22px;
  padding-left: 0;
  list-style: none;
}

li {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  align-items: center;
  column-gap: 12px;
  margin: 0 0 12px;
  padding: 14px 16px;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

ul li::before {
  content: "";
  position: static;
  justify-self: center;
  align-self: center;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 5px rgba(34, 199, 255, 0.14);
}

ol {
  counter-reset: item;
}

ol li {
  counter-increment: item;
}

ol li::before {
  content: counter(item);
  position: static;
  justify-self: center;
  align-self: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
  line-height: 24px;
  text-align: center;
}

table {
  width: 100%;
  margin: 24px 0;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

tr:first-child td {
  background: var(--color-primary-dark);
  color: #ffffff;
  font-weight: 800;
}

tr:nth-child(even):not(:first-child) td {
  background: var(--color-surface-soft);
}

td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

tr:last-child td {
  border-bottom: 0;
}

.author-block {
  width: min(100% - 32px, var(--container));
  margin: 32px auto;
  padding: 28px;
  display: grid;
  gap: 12px;
  background: linear-gradient(135deg, var(--color-primary-dark), #0d2642);
  color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.author-block p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.9);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.benefit-card {
  position: relative;
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr);
  align-items: center;
  column-gap: 14px;
  min-height: 132px;
  padding: 18px;
  overflow: hidden;
  background:
    radial-gradient(
      circle at 88% 12%,
      rgba(34, 199, 255, 0.18),
      transparent 4.5rem
    ),
    #ffffff;
  border: 1px solid rgba(22, 137, 232, 0.16);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.benefit-card::after {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: rgba(22, 137, 232, 0.07);
}

.benefit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
  align-self: center;
  width: 42px;
  height: 42px;
  margin-bottom: 0;
  border-radius: 14px;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: #e6f7ff;
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
}

.benefit-card p {
  position: relative;
  z-index: 1;
  align-self: center;
  margin: 0;
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.45;
}

.feature-panel {
  margin-top: 28px;
  padding: 24px;
  background: linear-gradient(135deg, var(--color-primary-soft), #f8fbff);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.feature-panel-title {
  margin: 0 0 18px;
  color: var(--color-primary-dark);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.25;
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.feature-card {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 18px;
  background: #ffffff;
  border: 1px solid rgba(22, 137, 232, 0.16);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.feature-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
  align-self: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: #e6f7ff;
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
}

.feature-card p {
  align-self: center;
  margin: 0;
}

.feature-card strong {
  display: block;
  margin-bottom: 4px;
  color: var(--color-primary-dark);
}

.comparison-table td:first-child {
  width: 34%;
  color: var(--color-primary-dark);
  font-weight: 800;
}

.rating-card {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin: 8px 0 0;
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--color-primary-dark), #0d2642);
  border: 1px solid rgba(34, 199, 255, 0.22);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.rating-score {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  color: #7ddfff;
  font-weight: 900;
  line-height: 1;
}

.rating-score strong {
  font-size: 34px;
  letter-spacing: -0.04em;
}

.rating-score span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 18px;
  font-weight: 800;
}

.rating-text {
  display: grid;
  gap: 4px;
  color: #ffffff;
}

.rating-text span:first-child {
  font-size: 14px;
  font-weight: 800;
  line-height: 1.2;
}

.rating-stars {
  color: #7ddfff;
  font-size: 18px;
  letter-spacing: 2px;
  line-height: 1;
}

.faq-container {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.faq-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 34px;
  gap: 0 16px;
  align-items: center;
  padding: 20px 22px;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.toggle {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.faq-question {
  margin: 0;
  color: var(--color-primary-dark);
  font-size: 20px;
  line-height: 1.28;
}

.icon {
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary-soft);
}

.icon::before,
.icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 2px;
  background: var(--color-primary-dark);
  transform: translate(-50%, -50%);
  border-radius: 2px;
}

.icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
  grid-column: 1 / -1;
  max-height: 0;
  margin: 0;
  overflow: hidden;
  color: var(--color-muted);
  transition:
    max-height 0.22s ease,
    margin-top 0.22s ease;
}

.toggle:checked ~ .faq-answer {
  max-height: 320px;
  margin-top: 14px;
}

.toggle:checked ~ .icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.pros-cons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 24px 0;
}

.pros-cons ul {
  margin: 0;
}

.pros-cons li {
  background: #ffffff;
}

.pros-cons li::before {
  background: var(--color-success);
  box-shadow: 0 0 0 5px rgba(23, 138, 101, 0.14);
}

.pros-cons > div:last-child li::before {
  background: var(--color-danger);
  box-shadow: 0 0 0 5px rgba(194, 65, 65, 0.14);
}

footer {
  margin-top: 48px;
  background:
    radial-gradient(
      circle at 18% 12%,
      rgba(34, 199, 255, 0.16),
      transparent 22rem
    ),
    linear-gradient(135deg, #07111f, #0d2642);
  color: #ffffff;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-inner {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: 42px 0 34px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.footer-brand {
  display: grid;
  gap: 14px;
  color: #ffffff;
}

.footer-brand strong {
  display: block;
  color: #ffffff;
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.footer-brand p {
  max-width: 880px;
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 15px;
  line-height: 1.62;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(34, 199, 255, 0.14);
  color: #bfeeff;
  font-weight: 900;
  line-height: 1;
}

@media (max-width: 760px) {
  body {
    font-size: 16px;
    line-height: 1.62;
  }

  .header-inner {
    min-height: auto;
    padding: 16px 0;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
  }

  .logo {
    width: 180px;
    height: 52px;
    position: relative;
  }

  .logo img {
    height: 100%;
  }

  .header-actions {
    width: 100%;
    justify-content: center;
  }

  .header-link,
  .button {
    width: 100%;
    min-height: 46px;
  }

  .section {
    width: min(100% - 24px, var(--container));
    margin: 18px auto;
    padding: 24px 18px;
    border-radius: 18px;
  }

  .hero-section {
    margin-top: 24px;
  }

  .hero-section::before {
    inset: 12px;
    border-radius: 16px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 30px 20px;
  }

  .hero-section p {
    font-size: 16px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

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

  h1 {
    margin-bottom: 18px;
  }

  h2 {
    margin-bottom: 14px;
  }

  li {
    grid-template-columns: 24px minmax(0, 1fr);
    column-gap: 10px;
    padding: 13px 14px;
  }

  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    border-radius: 14px;
  }

  td {
    padding: 14px;
  }

  .author-block {
    width: min(100% - 24px, var(--container));
    padding: 22px 18px;
  }

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

  .benefit-card {
    grid-template-columns: 46px minmax(0, 1fr);
    min-height: auto;
    padding: 16px;
  }

  .feature-panel {
    padding: 18px;
  }

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

  .feature-card {
    grid-template-columns: 38px minmax(0, 1fr);
    padding: 16px;
  }

  .feature-card-icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    font-size: 19px;
  }

  .rating-card {
    width: 100%;
    align-items: flex-start;
    flex-direction: column;
  }

  .faq-item {
    grid-template-columns: 1fr 30px;
    padding: 18px 16px;
  }

  .faq-question {
    font-size: 18px;
  }

  .footer-inner {
    width: min(100% - 24px, var(--container));
    padding: 32px 0 26px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .pros-cons {
    grid-template-columns: 1fr;
  }
}