:root {
  --bg: #000000;
  --bg-soft: #041612;
  --surface: #071713;
  --surface-2: #0b211b;
  --surface-soft: #0f2d24;
  --text: #ffffff;
  --text-muted: #d8e5df;
  --border: rgba(255, 255, 255, 0.12);
  --accent: #ff2b13;
  --accent-dark: #d91f09;
  --yellow: #ffdf00;
  --green: #00775d;
  --green-dark: #003f32;
  --warning: #281f08;
  --warning-border: #ffd966;
  --danger: #ff2b13;
  --success: #23c483;
  --radius: 22px;
  --radius-sm: 14px;
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.45);
  --container: 1180px;
  --font-main: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(
      circle at 50% 140px,
      rgba(0, 128, 96, 0.34),
      transparent 34%
    ),
    radial-gradient(circle at 84% 42%, rgba(0, 115, 86, 0.22), transparent 24%),
    linear-gradient(180deg, #000000 0%, #02100d 40%, #000000 100%);
  color: var(--text);
  font-family: var(--font-main);
  font-size: 17px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

header {
  background: #000000;
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.header-inner {
  width: min(100%, calc(100% - 44px));
  margin: 0 auto;
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.logo {
  display: inline-flex;
  align-items: center;
  height: 58px;
  flex: 0 0 auto;
}

.logo img {
  height: 58px;
  width: auto;
  display: block;
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  flex-wrap: nowrap;
}

.button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 24px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #ffffff;
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.button:hover,
.button-link:hover {
  background: var(--accent-dark);
  color: #ffffff;
  transform: translateY(-1px);
}

.header-actions .button:first-child {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent);
}

.header-actions .button:first-child:hover {
  background: rgba(255, 43, 19, 0.12);
  color: #ffffff;
}

.header-actions .button:last-child {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.section > .button,
.section > .button-link {
  min-height: 60px;
  min-width: 280px;
  padding: 19px 42px;
  margin: 30px auto 0;
  border-radius: 13px;
  font-size: 18px;
  display: flex;
  width: max-content;
  box-shadow: 0 16px 34px rgba(255, 43, 19, 0.24);
}

.section {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto 28px;
  padding: 44px;
  background: linear-gradient(
    180deg,
    rgba(7, 23, 19, 0.94),
    rgba(2, 10, 8, 0.94)
  );
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.section:first-of-type {
  margin-top: 56px;
  background:
    radial-gradient(circle at 70% 30%, rgba(0, 119, 93, 0.32), transparent 34%),
    linear-gradient(135deg, #000000 0%, #06271f 100%);
}

h1,
h2,
h3 {
  margin: 0 0 18px;
  color: #ffffff;
  line-height: 1.14;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(42px, 6vw, 72px);
  font-weight: 900;
}

h2 {
  font-size: clamp(30px, 3.5vw, 46px);
  font-weight: 900;
}

h3 {
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 850;
  margin-top: 34px;
}

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

a {
  color: var(--yellow);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

ul,
ol {
  margin: 18px 0 24px 26px;
  padding: 0;
}

li {
  margin: 10px 0;
  color: var(--text-muted);
}

li::marker {
  color: var(--accent);
  font-weight: 800;
}

table {
  width: 100%;
  margin: 28px 0;
  border-collapse: separate;
  border-spacing: 0;
  background: #04100d;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
}

tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.035);
}

tr:first-child td {
  background: linear-gradient(90deg, #ff2b13 0%, #8b170c 100%);
  color: #ffffff;
  font-weight: 900;
}

td {
  padding: 17px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
  text-align: left;
  vertical-align: top;
  color: var(--text-muted);
}

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

td:first-child {
  color: #ffffff;
  font-weight: 800;
}

.author-block {
  margin: 42px 0;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 20px;
  align-items: start;
}

footer {
  margin-top: 64px;
  background: #000000;
  color: rgba(255, 255, 255, 0.78);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-inner {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
  padding: 26px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  display: grid;
  gap: 10px;
  max-width: 620px;
}

.footer-logo {
  height: 46px;
  width: auto;
  display: block;
}

.footer-brand strong {
  display: block;
  color: #ffffff;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.footer-brand p,
footer p {
  color: rgba(255, 255, 255, 0.72);
  margin: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: 12px 24px;
}

.pros-cons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 28px 0;
}

.pros-cons > div {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.expert-note {
  margin: 26px 0;
  padding: 22px 24px;
  background: var(--warning);
  border: 1px solid var(--warning-border);
  border-radius: var(--radius);
  color: #ffeaa2;
}

.comparison-table {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.comparison-table table {
  margin: 0;
  min-width: 760px;
  box-shadow: none;
}

.faq-container {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.faq-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 34px;
  gap: 10px 16px;
  padding: 22px 24px;
  background: linear-gradient(
    180deg,
    rgba(11, 33, 27, 0.98),
    rgba(4, 18, 14, 0.98)
  );
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 18px;
}

.toggle {
  display: none;
}

.faq-question {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
  color: #ffffff;
}

.icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  position: relative;
  align-self: start;
}

.icon::before,
.icon::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 14px;
  height: 2px;
  background: #ffffff;
}

.icon::after {
  transform: rotate(90deg);
}

.faq-answer {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--text-muted);
}

@media (max-width: 860px) {
  .header-inner {
    min-height: auto;
    padding: 16px 0;
  }

  .header-actions {
    gap: 10px;
  }

  .button,
  .button-link {
    min-height: 44px;
    padding: 12px 18px;
    font-size: 15px;
  }

  .section {
    width: min(100% - 24px, var(--container));
    padding: 28px;
    margin-bottom: 20px;
  }

  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .footer-inner {
    width: min(100% - 24px, var(--container));
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    gap: 16px;
    flex-wrap: wrap;
  }

  .logo img {
    height: 44px;
  }

  .header-actions {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .section > .button,
  .section > .button-link {
    width: 100%;
    min-width: 0;
  }

  h1 {
    font-size: 38px;
  }
  h2 {
    font-size: 28px;
  }
  h3 {
    font-size: 22px;
  }

  td {
    padding: 14px;
  }
}