:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #1e5bff;
  --border: #e5e7eb;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
}

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

body {
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #eef3ff 100%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 20px;
}

.ds-wrapper {
  width: 100%;
  max-width: 900px;
}

.ds-card {
  background: var(--card);
  border-radius: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.ds-header {
  padding: 52px 48px;
  background: linear-gradient(135deg, #111827 0%, #1f3b8f 100%);
  color: #ffffff;
}

.ds-header span {
  display: inline-block;
  margin-bottom: 14px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ds-header h1 {
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1;
  margin-bottom: 16px;
  font-weight: 800;
}

.ds-header p {
  max-width: 600px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
  line-height: 1.6;
}

.ds-content {
  padding: 48px;
}

.ds-content section {
  padding-bottom: 30px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border);
}

.ds-content section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.ds-content h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
}

.ds-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin: 20px 0 8px;
}

.ds-content p {
  color: #374151;
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 12px;
}

.ds-content ul {
  margin: 4px 0 14px 22px;
  color: #374151;
  font-size: 16px;
  line-height: 1.75;
}

.ds-content li {
  margin-bottom: 6px;
}

.ds-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 91, 255, 0.3);
}

.ds-content a:hover {
  border-color: var(--accent);
}

.ds-address {
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg);
  line-height: 1.7;
  color: var(--text);
  font-weight: 600;
}

.note {
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  background: rgba(30, 91, 255, 0.06);
  border-radius: 10px;
  color: #374151;
  font-size: 15px;
  line-height: 1.6;
}

.back-link {
  display: inline-block;
  margin-top: 30px;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

@media (max-width: 700px) {
  body {
    padding: 24px 14px;
  }

  .ds-header,
  .ds-content {
    padding: 34px 24px;
  }
}