/* 底部说明文章：以 /webrtc-leak-test 的 info-block 为统一样式。 */
.info-block {
  box-sizing: border-box;
  min-width: 0;
  margin-top: 18px;
  background:
    radial-gradient(circle at top left, rgba(124, 164, 255, 0.08), transparent 40%),
    #fff;
  border-radius: 16px;
  padding: 28px 26px;
  border: 1px solid rgba(124, 164, 255, 0.1);
  box-shadow: 0 10px 30px rgba(32, 51, 113, 0.04);
  color: #687388;
  font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  line-height: 1.95;
  text-align: left;
  overflow-wrap: anywhere;
}

.info-block-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.info-block-row .info-block { margin-top: 0; height: 100%; }

.info-block h2 {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
  font-size: 22px;
  line-height: 1.25;
  font-weight: 800;
  color: #2d3347;
}

.info-block h3 {
  margin: 24px 0 12px;
  padding: 0;
  border: 0;
  font-size: 18px;
  line-height: 1.35;
  font-weight: 800;
  color: #2d3347;
}

.info-block p {
  margin: 0;
  font-size: 14px;
  line-height: 1.95;
  color: #687388;
}

.info-block p + p,
.info-block p + ol,
.info-block p + ul,
.info-block ol + p,
.info-block ol + ul,
.info-block ul + p { margin-top: 14px; }

.info-block strong { color: #2d3347; font-weight: 700; }
.info-block ul { margin: 10px 0 0 20px; padding: 0; color: #687388; }
.info-block ol { margin: 14px 0 0 22px; padding: 0; color: #687388; }
.info-block li { margin: 8px 0; font-size: 14px; line-height: 1.9; }

.info-block code {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 7px;
  background: #f3f6fb;
  border: 1px solid #e2e8f3;
  color: #009c87;
  font-family: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.5;
}

/* 正文、URL 与相关阅读共用链接样式；导航和操作按钮保留各自外观。 */
.info-block a,
.company-link,
.risk-tip-content a,
.dns-leak-desc a,
.seo-jump-links a,
.status-sub a,
.empty p a,
article:not(.guide-index) a {
  color: #02979e;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 92, 201, 0.24);
  transition: color 0.18s ease, border-color 0.18s ease;
}

:is(.info-block, .risk-tip-content, .dns-leak-desc, .seo-jump-links, .status-sub, .empty p, article:not(.guide-index)) a:hover,
.company-link:hover { color: #03797e; border-bottom-color: rgba(40, 72, 165, 0.48); }
:is(.info-block, .risk-tip-content, .dns-leak-desc, .seo-jump-links, .status-sub, .empty p, article:not(.guide-index)) a:focus-visible,
.company-link:focus-visible { outline: 2px solid #02979e; outline-offset: 3px; }

.info-block table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
  line-height: 1.9;
  color: #687388;
}
.info-block th, .info-block td { padding: 9px 12px; border: 1px solid #e2e8f3; text-align: left; vertical-align: top; }
.info-block th { background: #f3f6fb; color: #2d3347; font-weight: 700; }

/* 原有问答内容沿用相同正文与标题色，保留展开交互。 */
.info-block .faq-q { margin: 16px 0 4px; font-weight: 700; color: #2d3347; }
.info-block .faq-q::before { content: 'Q '; color: #02979e; font-weight: 800; }
.info-block .faq-a { margin: 0; }
.info-block .faq-item { border-top: 1px solid #e2e8f3; }
.info-block .faq-item summary { font-size: 14px; line-height: 1.9; font-weight: 700; color: #2d3347; }
.info-block .faq-item summary::after { color: #687388; }
.info-block .faq-item > p { margin: 0 0 14px; }
.info-block .seo-faq-heading { margin-top: 24px; }

@media (max-width: 900px) {
  .info-block-row { grid-template-columns: 1fr; }
  .info-block h2 { font-size: 20px; }
}

@media (max-width: 640px) {
  .info-block-row { gap: 14px; }
  .info-block { padding: 22px 18px; }
  .info-block ol { margin-left: 20px; }
  .info-block table { display: block; max-width: 100%; overflow-x: auto; }
}