:root {
  --color-bg: #f4f6f8;
  --color-surface: #ffffff;
  --color-surface-soft: #eef3f8;
  --color-text: #16202a;
  --color-muted: #5f6f7f;
  --color-border: #d8e0e8;
  --color-accent: #f6c343;
  --color-accent-dark: #d99f12;
  --color-dark: #101820;
  --color-success: #16794c;
  --color-warning: #a05a00;
  --color-danger: #b42318;
  --shadow-soft: 0 10px 30px rgba(16, 24, 32, 0.08);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

header {
  background: var(--color-dark);
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  height: 58px;
}

.logo img {
  height: 58px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: #111111;
  font-family: inherit;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.button:hover,
.button:focus {
  background: var(--color-accent-dark);
  color: #111111;
  transform: translateY(-1px);
}

.button.secondary {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.28);
}

.button.secondary:hover,
.button.secondary:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.5);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 22px;
}

.section + .section {
  padding-top: 18px;
}

.hero {
  max-width: var(--max-width);
  margin: 28px auto 0;
  padding: 34px 22px;
}

.hero-banner {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 28px;
  align-items: stretch;
  padding: 38px;
  background:
    radial-gradient(
      circle at top right,
      rgba(246, 195, 67, 0.28),
      transparent 34%
    ),
    linear-gradient(135deg, #101820 0%, #172536 52%, #22384f 100%);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

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

.hero-banner h1 {
  margin-bottom: 18px;
}

.hero-banner p {
  max-width: 780px;
  color: rgba(255, 255, 255, 0.82);
}

.hero-eyebrow {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 13px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.hero-actions .button.secondary {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.34);
}

.hero-card {
  align-self: stretch;
  padding: 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
}

.hero-card p {
  margin-bottom: 14px;
  font-size: 15px;
}

.hero-card strong {
  display: block;
  color: var(--color-accent);
  font-size: 18px;
  margin-bottom: 4px;
}

.hero-list {
  margin: 18px 0 0;
  padding-left: 0;
  list-style: none;
}

.hero-list li {
  position: relative;
  margin: 10px 0;
  padding-left: 24px;
  color: rgba(255, 255, 255, 0.86);
}

.hero-list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--color-accent);
  border-radius: 50%;
}

h1,
h2,
h3 {
  margin: 0 0 18px;
  color: var(--color-text);
  line-height: 1.22;
  font-weight: 800;
}

h1 {
  max-width: 900px;
  font-size: clamp(34px, 6vw, 58px);
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -0.025em;
}

h3 {
  font-size: clamp(21px, 3vw, 27px);
  letter-spacing: -0.015em;
}

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

p:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0 0 22px;
  padding-left: 24px;
}

li {
  margin: 8px 0;
  padding-left: 4px;
}

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

tr {
  border-bottom: 1px solid var(--color-border);
}

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

td {
  padding: 15px 16px;
  text-align: left;
  vertical-align: top;
  color: var(--color-text);
}

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

.author-block {
  max-width: var(--max-width);
  margin: 36px auto;
  padding: 24px;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.author-block img {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-surface-soft);
}

.author-block strong {
  display: block;
  margin-bottom: 6px;
  font-size: 18px;
}

footer {
  margin-top: 50px;
  background: var(--color-dark);
  color: #ffffff;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 26px 22px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.footer-inner + .footer-inner {
  padding-top: 0;
}

.footer-inner p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.footer-brand {
  color: #ffffff;
}

.footer-brand strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
  color: var(--color-accent);
}

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

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

.pros-cons h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.pros-cons ul {
  margin-bottom: 0;
}

.expert-note {
  margin: 24px 0;
  padding: 20px 22px;
  background: #fff8e5;
  border: 1px solid #f0d38a;
  border-left: 5px solid var(--color-accent-dark);
  border-radius: var(--radius-md);
  color: var(--color-text);
}

.expert-note strong {
  color: var(--color-warning);
}

.expert-note.success {
  background: #ecfdf3;
  border-color: #b8e6ca;
  border-left-color: var(--color-success);
}

.expert-note.success strong {
  color: var(--color-success);
}

.comparison-table {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

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

.comparison-table td:first-child {
  font-weight: 800;
}

.cta-box {
  margin: 28px 0;
  padding: 26px;
  background: linear-gradient(135deg, #101820 0%, #1c2c3b 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.cta-box h2,
.cta-box h3,
.cta-box p {
  color: #ffffff;
}

.cta-box p {
  color: rgba(255, 255, 255, 0.78);
}

.faq-container {
  display: grid;
  gap: 14px;
  margin: 24px 0;
}

.faq-item {
  position: relative;
  padding: 18px 54px 18px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

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

.faq-question {
  margin: 0;
  padding-right: 12px;
  font-size: 20px;
  line-height: 1.35;
}

.icon {
  position: absolute;
  top: 22px;
  right: 20px;
  width: 18px;
  height: 18px;
}

.icon::before,
.icon::after {
  content: "";
  position: absolute;
  background: var(--color-text);
  border-radius: 2px;
}

.icon::before {
  top: 8px;
  left: 0;
  width: 18px;
  height: 2px;
}

.icon::after {
  top: 0;
  left: 8px;
  width: 2px;
  height: 18px;
  transition: transform 0.2s ease;
}

.faq-answer {
  display: none;
  margin: 14px 0 0;
  color: var(--color-muted);
}

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

.toggle:checked ~ .faq-answer {
  display: block;
}

@media (max-width: 900px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-actions {
    width: 100%;
  }

  .button {
    width: 100%;
  }

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

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

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

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

  td {
    padding: 13px 14px;
  }

  .author-block {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: 36px 16px;
  }

  .hero {
    margin-top: 18px;
    padding: 24px 16px;
  }

  .hero-banner {
    padding: 22px;
  }

  .header-inner,
  .footer-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  ul,
  ol {
    padding-left: 20px;
  }

  .expert-note,
  .cta-box,
  .pros-cons > div {
    padding: 18px;
  }
}