:root {
  --navy: #1A365D;
  --navy-mid: #2C5282;
  --paper: #EDF2F7;
  --card: #FFFFFF;
  --ink: #1A202C;
  --muted: #4A5568;
  --line: #CBD5E0;
  --accent: #2B6CB0;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: auto;
}

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
}

img,
svg {
  display: block;
}

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

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  background: var(--navy);
  color: #fff;
  border-bottom: 4px solid var(--navy-mid);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand svg {
  width: 28px;
  height: 28px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 14px;
}

.nav a {
  color: #E2E8F0;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.nav a:hover,
.nav a:focus {
  border-bottom-color: #90CDF4;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.hero-left {
  background: var(--navy);
  color: #F7FAFC;
  padding: 56px 48px 64px;
}

.hero-right {
  background: var(--paper);
  color: var(--ink);
  padding: 56px 48px 64px;
  border-left: 1px solid var(--line);
}

.hero h1 {
  font-size: 30px;
  line-height: 1.35;
  margin-bottom: 18px;
  font-weight: 700;
}

.hero-left p,
.hero-right p {
  margin-bottom: 10px;
  max-width: 42em;
}

.kicker {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  color: #90CDF4;
}

.hero-right .kicker {
  color: var(--navy-mid);
}

.panel {
  padding: 48px 0;
}

.panel-alt {
  background: #fff;
}

.lead {
  color: var(--muted);
  margin-bottom: 18px;
  max-width: 46em;
}

h2 {
  font-size: 24px;
  line-height: 1.4;
  margin-bottom: 14px;
}

h3,
.block-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}

p {
  margin-bottom: 12px;
}

.compare {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
}

.compare th,
.compare td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.compare thead th {
  background: var(--navy);
  color: #fff;
  font-weight: 600;
}

.compare tbody tr:nth-child(even) {
  background: #F7FAFC;
}

.cards-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
}

.card {
  background: var(--card);
  padding: 22px 20px 20px;
  border-right: 1px solid var(--line);
}

.card:last-child {
  border-right: 0;
}

.card svg {
  width: 36px;
  height: 36px;
  margin-bottom: 12px;
  color: var(--navy);
}

.missing-box {
  border: 2px dashed var(--navy-mid);
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: repeating-linear-gradient(
    -45deg,
    #fff,
    #fff 10px,
    #F7FAFC 10px,
    #F7FAFC 20px
  );
  padding: 28px;
  text-align: center;
}

.missing-box svg {
  width: 48px;
  height: 48px;
  color: var(--navy-mid);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
}

.split article {
  padding: 24px;
  background: #fff;
}

.split article + article {
  border-left: 1px solid var(--line);
  background: #EBF4FF;
}

.scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

ul.plain {
  margin: 8px 0 14px 1.2em;
}

ul.plain li {
  margin-bottom: 8px;
}

.faq-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--navy);
}

.faq-table th,
.faq-table td {
  border: 1px solid var(--line);
  padding: 14px 16px;
  vertical-align: top;
  text-align: left;
}

.faq-table th {
  width: 38%;
  background: #E2E8F0;
  font-weight: 600;
}

.site-footer {
  background: var(--navy);
  color: #E2E8F0;
  padding: 28px 0 36px;
  font-size: 13px;
}

.site-footer p {
  margin-bottom: 8px;
}

@media (max-width: 860px) {
  .hero,
  .cards-3,
  .split,
  .header-row {
    grid-template-columns: 1fr;
    display: block;
  }

  .hero-left,
  .hero-right {
    padding: 32px 20px;
  }

  .card,
  .split article + article {
    border-right: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}