:root {
  --primary: #1f6feb;
  --primary-dark: #1249a6;
  --bg: #f5f8ff;
  --text: #1f2937;
  --muted: #4b5563;
  --card: #ffffff;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}

.container {
  width: min(1080px, 92%);
  margin: 0 auto;
}

.hero {
  background: linear-gradient(120deg, var(--primary), #3f8cff);
  color: #fff;
  padding-bottom: 64px;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}

.logo {
  font-size: 20px;
  font-weight: 700;
}

.nav ul {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav a {
  color: #fff;
  text-decoration: none;
  opacity: 0.95;
}

.nav a:hover {
  opacity: 1;
  text-decoration: underline;
}

.hero-content {
  padding: 52px 0 16px;
}

.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
}

.hero p {
  margin: 0 0 26px;
  font-size: 18px;
  max-width: 720px;
}

.btn {
  display: inline-block;
  background: #fff;
  color: var(--primary-dark);
  border: 0;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
}

.section {
  padding: 62px 0;
}

.section h2 {
  margin: 0 0 18px;
  font-size: 30px;
}

.section-alt {
  background: var(--bg);
}

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

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

.card h3 {
  margin: 0 0 8px;
}

.advantages {
  margin: 0;
  padding-left: 18px;
}

.news-list {
  display: grid;
  gap: 16px;
}

.news-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  background: #fff;
}

.news-item time {
  color: var(--muted);
  font-size: 14px;
}

.news-item h3 {
  margin: 6px 0 8px;
}

.news-item p {
  margin: 0;
}

.contact-form {
  margin-top: 16px;
  display: grid;
  gap: 10px;
  max-width: 680px;
}

.contact-form label {
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid #c8ddff;
  border-color: #9ec2ff;
}

.btn-submit {
  background: var(--primary);
  color: #fff;
  justify-self: start;
}

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

.form-status {
  margin: 4px 0 0;
  min-height: 24px;
  color: #0f5132;
}

.footer {
  background: #0b1a34;
  color: #cbd5e1;
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    gap: 12px;
  }

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

  .section {
    padding: 46px 0;
  }
}