/* 更新日志页专属样式（与落地页 landing.css 配合使用） */

/* 移动端保留返回按钮（landing.css 在小屏会隐藏 .nav-actions） */
@media (max-width: 768px) {
  .changelog-nav .nav-actions {
    display: flex;
    gap: 8px;
  }

  .changelog-nav .nav-actions .btn {
    min-height: 40px;
    padding: 0 14px;
    font-size: 13px;
  }

  .changelog-cta {
    display: none;
  }
}

.changelog-main {
  max-width: 860px;
  margin: 0 auto;
  padding: 148px 5% 80px;
}

.changelog-hero {
  text-align: center;
  margin-bottom: 56px;
}

.changelog-hero h1 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-main);
  margin-bottom: 14px;
}

.changelog-hero p {
  max-width: 560px;
  margin: 0 auto;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

.changelog-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  border-left: 2px solid rgba(37, 99, 235, 0.18);
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.changelog-item {
  position: relative;
}

.changelog-item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #ffffff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

.changelog-date {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.07);
  border: 1px solid rgba(37, 99, 235, 0.16);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.changelog-body h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.changelog-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}

@media (max-width: 600px) {
  .changelog-main {
    padding: 118px 20px 56px;
  }

  .changelog-hero h1 {
    font-size: 28px;
  }

  .changelog-timeline {
    padding-left: 20px;
    gap: 26px;
  }

  .changelog-item::before {
    left: -26px;
    width: 12px;
    height: 12px;
  }
}