/* =========================================================
   展示页布局：页头、五个状态、分区、页脚
   尺寸取自设计稿：外边距 64、分区间距 48、卡片列宽 372。
   ========================================================= */

.page {
  display: flex;
  flex-direction: column;
  gap: 48px;
  max-width: 2180px; /* 2052 内容宽 = 5 × 372 + 4 × 48 */
  margin: 0 auto;
  padding: 64px;
}

.page-main {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

/* ---- 页头 ---- */

.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.page-header__text {
  display: flex;
  flex: 1 1 480px;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-title {
  margin: 0;
  color: var(--page-strong);
  font-size: 28px;
  font-weight: 600;
  line-height: 36px;
  letter-spacing: -0.02em;
}

.page-lede {
  max-width: 80ch;
  margin: 0;
  color: var(--page-muted);
  font-size: 14px;
  line-height: 20px;
}

.page-header__switch {
  flex: none;
}

/* ---- 五个状态 ---- */

.states {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 48px;
}

.state {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(372px, 100%);
  margin: 0;
}

.state__caption {
  color: var(--page-muted);
  font-size: 12px;
  line-height: 16px;
}

/* ---- 分区 ---- */

.section {
  padding-top: 40px;
  border-top: 1px solid var(--page-rule);
}

.section__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.section__title {
  margin: 0;
  color: var(--page-muted);
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
}

.section__desc {
  max-width: 72ch;
  margin: 0;
  color: var(--page-text);
  font-size: 14px;
  line-height: 20px;
}

/* ---- 页脚 ---- */

.page-footer {
  display: flex;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--page-rule);
  color: var(--page-muted);
  font-size: 12px;
  line-height: 16px;
}

/* ---- file:// 提示 ---- */

.file-notice {
  display: none;
  padding: 12px 16px;
  border: 1px solid var(--page-rule);
  border-radius: 12px;
  color: var(--page-strong);
}

:root[data-file-protocol] .file-notice {
  display: block;
}

/* ---- 窄屏 ---- */

@media (max-width: 720px) {
  .page {
    gap: 40px;
    padding: 32px 16px;
  }

  .page-main,
  .states {
    gap: 32px;
  }

  .page-title {
    font-size: 22px;
    line-height: 30px;
  }
}