* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: #f1f1f3;
  color: #333;
  font-family: "Microsoft YaHei", Arial, sans-serif;
}

.platform-wrap {
  min-height: 100%;
  padding: 36px 0 110px;
}

.platform-main {
  width: 995px;
  max-width: calc(100% - 24px);
  margin: 0 auto;
  background: #fff;
  border: 1px solid #e6e6e6;
  border-radius: 2px;
  padding: 18px 16px 22px;
}

.platform-title {
  margin: 0 0 14px;
  text-align: center;
  font-size: 36px;
  line-height: 1.2;
  font-weight: 400;
  color: #333;
}

.platform-content {
  font-size: 12px;
  line-height: 1.9;
  word-break: break-all;
}

.platform-content p,
.platform-content li {
  margin: 0 0 8px;
}

.platform-content ul {
  margin: 0;
  padding-left: 18px;
}

.platform-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 44px;
  border-top: 1px solid #e3e3e3;
  background: #f8f8f8;
  color: #555;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .platform-wrap { padding: 12px 0 74px; }
  .platform-main { max-width: calc(100% - 12px); padding: 12px 10px 14px; }
  .platform-title { font-size: 24px; margin-bottom: 10px; }
  .platform-content { font-size: 13px; line-height: 1.75; }
}