/* 文档与手册 — 延续服务与支持主题 */
.support-docs-page {
  --support-docs-shell: min(960px, calc(100% - 48px));
}

.support-docs-main .support-content {
  padding-top: 40px;
}

.support-docs-content__inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-inline: 24px;
  padding-bottom: 72px;
  max-width: var(--support-docs-shell);
  margin-inline: auto;
}

.support-docs-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--support-text-soft);
}

.support-docs-breadcrumb a {
  color: var(--support-link);
  text-decoration: none;
}

.support-docs-breadcrumb a:hover {
  text-decoration: underline;
}

.support-docs-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.support-docs-header__kicker {
  margin: 0;
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--support-primary);
}

.support-docs-header__title {
  margin: 0;
  font-size: 28px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--support-text);
}

.support-docs-header__desc {
  margin: 0;
  max-width: 720px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--support-text-soft);
}

.support-docs-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.support-docs-tab {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 16px;
  border: 1px solid var(--support-border);
  border-radius: 999px;
  font-size: 13px;
  line-height: 1;
  color: var(--support-text);
  text-decoration: none;
  background: #fff;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.support-docs-tab:hover {
  border-color: var(--support-primary);
  color: var(--support-primary);
}

.support-docs-tab.is-active {
  border-color: var(--support-primary);
  background: var(--support-primary-soft);
  color: var(--support-primary);
  font-weight: 600;
}

.support-docs-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--support-border);
}

.support-docs-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--support-border);
}

.support-docs-item__main {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  min-width: 0;
}

.support-docs-item__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--support-primary-soft);
  position: relative;
}

.support-docs-item__icon::before {
  content: "";
  position: absolute;
  inset: 11px 12px 13px;
  border: 2px solid var(--support-primary);
  border-radius: 2px;
}

.support-docs-item__icon::after {
  content: "PDF";
  position: absolute;
  left: 50%;
  bottom: 7px;
  transform: translateX(-50%);
  font-size: 8px;
  font-weight: 700;
  line-height: 1;
  color: var(--support-primary);
}

.support-docs-item__text {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.support-docs-item__title {
  margin: 0;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--support-text);
}

.support-docs-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--support-text-soft);
}

.support-docs-item__tag {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 0 8px;
  border-radius: 4px;
  background: var(--support-primary-soft);
  color: var(--support-primary);
  font-weight: 600;
}

.support-docs-item__download {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  min-height: 36px;
  padding: 0 18px;
  border-radius: 4px;
  background: var(--support-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease;
}

.support-docs-item__download:hover {
  background: var(--support-primary-dark);
  color: #fff;
}

.support-docs-item__download--disabled {
  background: var(--support-surface);
  color: var(--support-text-soft);
  cursor: not-allowed;
}

.support-docs-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 56px 24px;
  text-align: center;
  background: var(--support-surface);
}

.support-docs-empty__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--support-border);
  position: relative;
}

.support-docs-empty__icon::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 2px solid var(--support-primary);
  border-radius: 3px;
  opacity: 0.45;
}

.support-docs-empty p {
  margin: 0;
  max-width: 420px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--support-text-soft);
}

.support-docs-empty__link {
  font-size: 13px;
  font-weight: 600;
  color: var(--support-link);
  text-decoration: none;
}

.support-docs-empty__link:hover {
  text-decoration: underline;
}

@media (min-width: 768px) {
  .support-docs-header__title {
    font-size: 32px;
  }

  .support-docs-item {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding-block: 24px;
  }

  .support-docs-item__main {
    flex: 1;
  }

  .support-docs-item__download {
    align-self: center;
    flex-shrink: 0;
  }
}

@media (min-width: 1024px) {
  .support-docs-content__inner {
    gap: 40px;
  }
}