:root {
  --bg: #f3f7ff;
  --surface: #ffffff;
  --text: #1b2538;
  --muted: #566581;
  --primary: #1156d2;
  --primary-dark: #0d45a7;
  --line: #d8e2f5;
  --soft: #ecf2ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h2 {
  font-size: clamp(1.5rem, 2.7vw, 2.1rem);
  margin-bottom: 18px;
}

.hero {
  padding: 68px 0;
  background: linear-gradient(135deg, #e6efff 0%, #f3f7ff 56%, #eef5ff 100%);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  align-items: start;
}

.kicker {
  margin: 0;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.lead-text {
  color: var(--muted);
  max-width: 760px;
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 10px;
  padding: 11px 17px;
  font-weight: 600;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  border: 1px solid var(--line);
  color: var(--text);
  background: #fff;
}

.quick-points {
  margin-top: 18px;
  margin-bottom: 0;
  padding-left: 20px;
  color: var(--muted);
}

.hero-panel {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 10px 24px rgba(17, 86, 210, 0.1);
}

.hero-panel h2 {
  font-size: 1.2rem;
}

.hero-panel p {
  margin: 0 0 10px;
}

.hero-panel a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 600;
}

.hero-panel a:hover {
  text-decoration: underline;
}

.text-link {
  display: inline-block;
  margin-top: 6px;
}

.section {
  padding: 52px 0;
}

.section-alt {
  background: #edf3ff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-intro {
  margin-top: 0;
  color: var(--muted);
  max-width: 770px;
}

.tag-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 10px;
}

.tag-grid span {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--primary-dark);
}

.product-grid {
  margin-top: 20px;
  display: grid;
  gap: 16px;
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 16px;
  align-items: center;
}

.product-card img {
  width: 100%;
  height: 165px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
}

.product-card p {
  margin: 8px 0 10px;
  color: var(--muted);
}

.product-card a {
  color: var(--primary-dark);
  font-weight: 700;
  text-decoration: none;
}

.product-card a:hover {
  text-decoration: underline;
}

.use-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.use-grid article {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
}

.use-grid p {
  margin: 8px 0 0;
  color: var(--muted);
}

.section-highlight {
  background: linear-gradient(180deg, #eff5ff 0%, #f8fbff 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.longtail-list {
  margin-top: 0;
  color: var(--text);
  padding-left: 20px;
}

.longtail-list li {
  margin-bottom: 7px;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.cta {
  text-align: center;
}

.cta p {
  color: var(--muted);
  margin-top: 0;
}

footer {
  border-top: 1px solid var(--line);
  padding: 26px 0;
  background: #f1f6ff;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  gap: 6px;
}

footer p {
  margin: 0;
}

footer a {
  color: var(--primary-dark);
}

@media (max-width: 920px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-card img {
    height: 180px;
  }
}