/* ============ 帮助文档页 · page-faq ============ */

.page-faq {
  padding-bottom: 104px;
}

/* ---------- 封面区 ---------- */
.page-faq .faq-cover {
  position: relative;
  padding: 26px 0 52px;
  overflow: hidden;
}

.page-faq .faq-cover::before {
  content: "";
  position: absolute;
  top: -280px;
  right: -200px;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 242, 216, 0.17), rgba(56, 242, 216, 0) 66%);
  pointer-events: none;
}

.page-faq .faq-cover > .container {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb {
  margin-bottom: 26px;
}

.page-faq .faq-cover-grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-cover-lead .eyebrow {
  margin: 0 0 14px;
}

.page-faq .faq-cover-lead .display-title {
  margin: 0 0 18px;
}

.page-faq .faq-cover-lead .lede {
  margin: 0;
  max-width: 56ch;
}

/* ---------- 分区索引 ---------- */
.page-faq .faq-toc {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-faq .faq-toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-toc-link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--white);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .faq-toc-link:hover,
.page-faq .faq-toc-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-toc-link[aria-current] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-toc-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-toc-name {
  font-weight: 600;
}

.page-faq .faq-toc-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- 快速上手 ---------- */
.page-faq .faq-start {
  padding: 58px 0 6px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .start-grid {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-faq .start-steps-wrap .eyebrow {
  margin: 0 0 12px;
}

.page-faq .start-steps-wrap .section-title {
  margin: 0;
}

.page-faq .start-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .start-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-faq .start-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .start-step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--orange);
  padding-top: 4px;
}

.page-faq .start-step-title {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .start-step-body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .start-step-body a,
.page-faq .qa-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 216, 0.38);
}

.page-faq .start-step-body a:hover,
.page-faq .qa-a a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .start-figure,
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-media {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-900) 72%);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-media + .media-caption,
.page-faq .start-figure .media-caption,
.page-faq .faq-figure .media-caption {
  margin-top: 10px;
}

/* ---------- 问答分区 ---------- */
.page-faq .faq-section {
  padding: 60px 0 6px;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-section[data-accent="cyan"] {
  --faq-accent: var(--cyan);
}

.page-faq .faq-section[data-accent="orange"] {
  --faq-accent: var(--orange);
}

.page-faq .faq-section-head {
  margin-bottom: 22px;
}

.page-faq .faq-section-tag {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--faq-accent, var(--cyan));
}

.page-faq .faq-section-tag::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--faq-accent, var(--cyan));
}

.page-faq .faq-section-head .section-title {
  margin: 0 0 12px;
}

.page-faq .faq-section-desc {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  transition: border-color 0.25s var(--ease);
}

.page-faq .qa-item[open] {
  border-left-color: var(--faq-accent, var(--cyan));
}

.page-faq .qa-item > summary {
  list-style: none;
  cursor: pointer;
}

.page-faq .qa-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa-item > summary::marker {
  content: "";
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 22px;
  gap: 10px;
  align-items: start;
  padding: 17px 10px 17px 12px;
  transition: background-color 0.25s var(--ease);
}

.page-faq .qa-q:hover {
  background: rgba(154, 166, 201, 0.06);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .qa-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--faq-accent, var(--cyan));
  padding-top: 4px;
}

.page-faq .qa-text {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .qa-mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  justify-self: end;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .qa-mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}

.page-faq .qa-mark::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-faq .qa-item[open] .qa-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 12px 22px 12px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .qa-a p {
  margin: 0 0 12px;
}

.page-faq .qa-a p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-note {
  margin-top: 14px;
  padding: 12px 16px;
  border-left: 2px solid var(--faq-accent, var(--cyan));
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: var(--ink-700);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .qa-steps {
  list-style: none;
  counter-reset: qastep;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa-steps > li {
  position: relative;
  padding-left: 28px;
  counter-increment: qastep;
}

.page-faq .qa-steps > li::before {
  content: counter(qastep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.95;
  color: var(--faq-accent, var(--cyan));
}

/* ---------- 分区配图 ---------- */
.page-faq .faq-figure {
  margin-top: 30px;
}

/* ---------- 反馈分区 ---------- */
.page-faq .faq-section--feedback {
  padding-bottom: 20px;
}

.page-faq .faq-section--feedback .faq-section-desc {
  max-width: 60ch;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-faq .qa-a {
    padding-left: 62px;
    padding-right: 40px;
    max-width: 76ch;
  }

  .page-faq .qa-q {
    padding-right: 18px;
    padding-left: 16px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq {
    padding-bottom: 128px;
  }

  .page-faq .faq-cover {
    padding: 34px 0 64px;
  }

  .page-faq .faq-cover-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(300px, 1fr);
    gap: 64px;
    align-items: end;
  }

  .page-faq .faq-start,
  .page-faq .faq-section {
    padding-top: 76px;
  }

  .page-faq .start-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    gap: 64px;
  }

  .page-faq .start-figure {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-faq .faq-section-head {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    column-gap: 48px;
    align-items: start;
    margin-bottom: 28px;
  }

  .page-faq .faq-section-tag {
    grid-column: 1 / -1;
  }

  .page-faq .faq-section-head .section-title {
    margin-bottom: 0;
  }

  .page-faq .faq-section-head .faq-section-desc {
    padding-top: 6px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc-link,
  .page-faq .qa-item,
  .page-faq .qa-q,
  .page-faq .qa-mark::before,
  .page-faq .qa-mark::after {
    transition: none;
  }
}