/* 使用帮助页 —— 文档版式 */

body.help-page {
  position: relative;
  background-color: var(--wa-color-bg);
  background-image:
    radial-gradient(
      900px 420px at 8% -8%,
      color-mix(in srgb, var(--wa-color-primary) 16%, transparent),
      transparent 62%
    ),
    radial-gradient(
      780px 380px at 96% 0%,
      color-mix(in srgb, var(--wa-color-primary) 10%, transparent),
      transparent 58%
    );
  background-attachment: fixed;
}

body.help-page::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(
    color-mix(in srgb, var(--wa-color-primary) 28%, transparent) 1.1px,
    transparent 1.2px
  );
  background-size: 22px 22px;
  opacity: 0.85;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 42%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, #000 42%, transparent 88%);
}

body.help-page .wa-shell {
  position: relative;
  z-index: 1;
}

html[data-theme="dark"] body.help-page {
  background-image:
    radial-gradient(
      900px 420px at 8% -8%,
      color-mix(in srgb, var(--wa-color-primary) 22%, transparent),
      transparent 62%
    ),
    radial-gradient(
      780px 380px at 96% 0%,
      color-mix(in srgb, var(--wa-color-primary) 14%, transparent),
      transparent 58%
    );
}

html[data-theme="dark"] body.help-page::before {
  background-image: radial-gradient(rgba(255, 255, 255, 0.22) 1.1px, transparent 1.2px);
  opacity: 0.55;
}

.help-main {
  padding-bottom: 12px;
}

.help-body {
  padding: 28px 0 16px;
}

.help-section:last-child {
  margin-bottom: 0;
}

body.help-page .wa-footer {
  margin-top: 28px;
}

.help-layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.help-toc {
  position: sticky;
  top: 88px;
  padding: 14px 14px 12px;
  border: 1px solid var(--wa-color-border-1);
  border-radius: 14px;
  background: color-mix(in srgb, var(--wa-color-surface) 88%, transparent);
}

.help-toc__label {
  margin: 0 0 10px;
  color: var(--wa-color-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.help-toc__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.help-toc__nav a {
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--wa-color-text-secondary);
  font-size: 0.88rem;
  text-decoration: none;
  transition: background var(--wa-duration-fast) var(--wa-ease), color var(--wa-duration-fast) var(--wa-ease);
}

.help-toc__nav a:hover {
  color: var(--wa-color-text);
  background: var(--wa-color-fill-1);
}

.help-content {
  min-width: 0;
}

.help-section {
  margin: 0 0 28px;
  padding: 22px 22px 20px;
  border: 1px solid var(--wa-color-border-1);
  border-radius: 16px;
  background: color-mix(in srgb, var(--wa-color-surface) 92%, transparent);
  scroll-margin-top: 96px;
}

.help-section h1,
.help-section h2 {
  margin: 0 0 12px;
  font-size: 1.2rem;
  font-weight: 750;
  color: var(--wa-color-text);
}

.help-section__sub {
  margin: 16px 0 8px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--wa-color-text);
}

.help-section > p {
  margin: 0 0 12px;
  color: var(--wa-color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.help-steps,
.help-list {
  margin: 0;
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--wa-color-text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

.help-steps li,
.help-list li {
  padding-left: 2px;
}

.help-code {
  margin: 0;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--wa-color-border-1);
  background: color-mix(in srgb, var(--wa-color-fill-1) 28%, transparent);
  overflow-x: auto;
}

.help-code code {
  font-family: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.74rem;
  font-weight: 400;
  line-height: 1.55;
  color: color-mix(in srgb, var(--wa-color-text) 62%, var(--wa-color-muted));
  white-space: pre;
}

.help-section code:not(pre code) {
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--wa-color-fill-1);
  font-size: 0.82em;
  word-break: break-all;
}

.help-prompts {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 14px 0 0;
}

.help-prompt {
  margin: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--wa-color-border-1);
  border-radius: 12px;
  background: var(--wa-color-surface, #fff);
  overflow: hidden;
}

.help-prompt__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--wa-color-border-1);
  background: var(--wa-color-fill-1);
  font-size: 0.84rem;
  font-weight: 650;
  color: var(--wa-color-text);
}

.help-prompt__head > span:first-child {
  color: var(--wa-color-text);
  font-weight: 700;
}

.help-prompt__copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin: 0;
  border: 0;
  border-radius: 8px;
  padding: 0;
  background: transparent;
  color: var(--wa-color-primary);
  font: inherit;
  line-height: 1;
  cursor: pointer;
}

.help-prompt__copy > i {
  font-size: 0.92rem;
  line-height: 1;
}

.help-prompt__copy:hover {
  background: color-mix(in srgb, var(--wa-color-primary) 10%, transparent);
  color: var(--wa-color-primary-strong, var(--wa-color-primary));
}

.help-prompt__code {
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow-x: auto;
}

.help-prompt__code code {
  display: block;
  padding: 16px 14px;
  background: color-mix(in srgb, var(--wa-color-fill-1) 28%, transparent);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.85;
  color: var(--wa-color-text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  tab-size: 2;
}

.help-manual {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.help-manual__lead {
  margin: 0;
  color: var(--wa-color-text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.help-manual__lead + .help-code {
  margin-top: 2px;
}

.help-manual .help-code + .help-manual__lead {
  margin-top: 6px;
}

.help-manual__note {
  margin: 2px 0 0;
  color: var(--wa-color-muted);
  font-size: 0.84rem;
  line-height: 1.5;
}

.help-callout {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--wa-color-primary) 22%, var(--wa-color-border-1));
  background: var(--wa-color-primary-soft);
  color: var(--wa-color-text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
}

.help-callout strong {
  color: var(--wa-color-primary);
  font-size: 0.82rem;
}

.help-callout--free {
  border-color: color-mix(in srgb, #10b981 28%, var(--wa-color-border-1));
  background: color-mix(in srgb, #10b981 12%, transparent);
}

.help-callout--free strong {
  color: #059669;
}

html[data-theme="dark"] .help-callout--free strong {
  color: #34d399;
}

.help-notes {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-top: 0;
}

.help-note {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  column-gap: 0.35em;
  row-gap: 8px;
  margin: 0;
  align-items: start;
}

.help-note__num {
  grid-column: 1;
  grid-row: 1;
  color: var(--wa-color-text);
  font-size: 0.95rem;
  font-weight: 650;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}

.help-note__q {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  color: var(--wa-color-text);
  font-size: 0.95rem;
  font-weight: 650;
  line-height: 1.4;
}

.help-note__a {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  padding-left: 0;
  color: var(--wa-color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.help-note .help-prompts--in-note {
  grid-column: 2;
  grid-row: 3;
  margin-top: 4px;
}

@media (max-width: 900px) {
  .help-layout {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .help-toc {
    position: static;
  }

  .help-toc__nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (max-width: 640px) {
  .help-body {
    padding-top: 20px;
  }

  .help-section {
    padding: 16px 14px 14px;
  }
}