/* 观看帮助页专属样式 · 全部限定在 .page-faq */
.page-faq {
  --faq-teal: var(--accent-teal);
  --faq-orange: var(--accent-orange);
  --faq-purple: var(--accent-purple);
  background: var(--page-bg);
  color: var(--text-dark);
}

.page-faq .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 16px 28px;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px 0 6px;
  font-size: 14px;
  color: var(--text-muted);
}
.page-faq .breadcrumb a {
  color: var(--accent-purple);
  font-weight: 700;
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}

/* 页头 */
.page-faq .page-hero {
  padding-bottom: 18px;
  border-bottom: 4px solid var(--text-dark);
}
.page-faq .page-hero .eyebrow {
  display: block;
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-purple);
  text-transform: uppercase;
}
.page-faq .page-hero h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.02em;
}
.page-faq .page-hero__lead {
  max-width: 860px;
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* 本页目录 */
.page-faq__toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.page-faq__toc a {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  color: var(--text-dark);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 200ms ease, color 200ms ease, transform 200ms ease;
}
.page-faq__toc a:hover {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  transform: translateY(-1px);
}

/* 分区标题 */
.page-faq .section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.page-faq .section-head h2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.2;
  font-weight: 900;
}
.page-faq__section-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

/* 常见问题手风琴 */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}
.page-faq .faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-left: 6px solid var(--faq-teal);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.page-faq .faq-item:nth-child(odd) {
  border-left-color: var(--faq-orange);
}
.page-faq .faq-item:nth-child(even) {
  border-left-color: var(--faq-teal);
}
.page-faq .faq-item:hover {
  box-shadow: 0 6px 18px rgba(31, 41, 55, 0.08);
}
.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 800;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__index {
  flex: 0 0 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--faq-teal);
  color: var(--card-bg);
  font-size: 14px;
  font-weight: 900;
}
.page-faq .faq-item:nth-child(odd) .faq-item__index {
  background: var(--faq-orange);
}
.page-faq .faq-item:nth-child(even) .faq-item__index {
  background: var(--faq-teal);
}
.page-faq .faq-item__question {
  flex: 1 1 auto;
  min-width: 0;
}
.page-faq .faq-item__chevron::after {
  content: "+";
  display: block;
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
  color: var(--text-muted);
}
.page-faq .faq-item[open] .faq-item__chevron::after {
  content: "–";
}
.page-faq .faq-item__body {
  padding: 0 16px 18px 64px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
}
.page-faq .faq-item__body p {
  margin: 0 0 8px;
}
.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__body a {
  color: var(--accent-purple);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--accent-purple);
}
.page-faq .faq-item__body a:hover {
  color: var(--text-dark);
  border-bottom-color: var(--text-dark);
}

/* 观看步骤图解 */
.page-faq .steps-grid {
  display: grid;
  gap: 20px;
}
.page-faq .step-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 2px 0 rgba(31, 41, 55, 0.06);
}
.page-faq .step-card summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-faq .step-card summary::-webkit-details-marker {
  display: none;
}
.page-faq .step-card__num {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--faq-orange);
  color: var(--card-bg);
  font-size: 18px;
  font-weight: 900;
}
.page-faq .step-card--2 .step-card__num {
  background: var(--faq-teal);
}
.page-faq .step-card--3 .step-card__num {
  background: var(--faq-purple);
}
.page-faq .step-card__title {
  flex: 1 1 auto;
  margin: 0;
  font-size: 18px;
  font-weight: 900;
}
.page-faq .step-card__chevron::after {
  content: "⌄";
  display: block;
  font-size: 22px;
  color: var(--text-muted);
  transition: transform 200ms ease;
}
.page-faq .step-card[open] .step-card__chevron::after {
  transform: rotate(180deg);
}
.page-faq .step-card__media {
  margin-top: 14px;
  border-radius: 14px;
  overflow: hidden;
  background: var(--tag-blue);
}
.page-faq .step-card__media img {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  object-fit: cover;
}
.page-faq .step-card__desc {
  margin: 12px 0 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* 清晰度与字幕规格 */
.page-faq .spec-visual {
  margin: 0 0 24px;
  border-radius: 18px;
  overflow: hidden;
  background: var(--section-blue);
  border: 1px solid var(--border-light);
}
.page-faq .spec-visual img {
  display: block;
  width: 100%;
  max-width: 900px;
  height: auto;
  object-fit: cover;
  margin: 0 auto;
}
.page-faq .spec-tables {
  display: grid;
  gap: 20px;
}
.page-faq .spec-card {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 16px;
}
.page-faq .spec-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.page-faq .spec-card__head h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
}
.page-faq .spec-card__hint {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--tag-yellow);
  color: var(--text-dark);
  font-size: 13px;
  font-weight: 800;
}
.page-faq .spec-table-wrap {
  overflow-x: auto;
}
.page-faq .spec-table-wrap .compare-table {
  min-width: 620px;
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.page-faq .spec-table-wrap .compare-table th,
.page-faq .spec-table-wrap .compare-table td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--border-light);
}
.page-faq .spec-table-wrap .compare-table thead th {
  background: var(--faq-teal);
  color: var(--card-bg);
  font-weight: 800;
}
.page-faq .spec-table-wrap .compare-table tbody tr:nth-child(even) {
  background: #F9FAFB;
}
.page-faq .spec-table-wrap .compare-table tbody tr:hover {
  background: var(--tag-blue);
}

/* 反馈时效 */
.page-faq .feedback-grid {
  display: grid;
  gap: 16px;
}
.page-faq .feedback-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--card-bg);
  border-radius: 14px;
  padding: 18px;
  border-bottom: 4px solid transparent;
}
.page-faq .feedback-item--mail {
  border-bottom-color: var(--faq-purple);
}
.page-faq .feedback-item--bug {
  border-bottom-color: var(--faq-orange);
}
.page-faq .feedback-item--request {
  border-bottom-color: var(--faq-teal);
}
.page-faq .feedback-item__icon {
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--tag-blue);
  color: var(--faq-purple);
}
.page-faq .feedback-item--bug .feedback-item__icon {
  background: var(--tag-pink);
  color: var(--faq-orange);
}
.page-faq .feedback-item--request .feedback-item__icon {
  background: var(--tag-yellow);
  color: var(--faq-teal);
}
.page-faq .feedback-item h3 {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 900;
}
.page-faq .feedback-item p {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.65;
}
.page-faq__btn {
  display: inline-block;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--text-dark);
  color: var(--card-bg);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  transition: background 200ms ease, transform 200ms ease;
}
.page-faq__btn:hover {
  background: var(--accent-purple);
  transform: translateY(-1px);
}
.page-faq__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}
.page-faq__legal a {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  color: var(--text-dark);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 200ms ease, color 200ms ease;
}
.page-faq__legal a:hover {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
}

/* 桌面增强 */
@media (min-width: 720px) {
  .page-faq .container {
    padding-top: 24px;
  }
  .page-faq .page-hero {
    padding-bottom: 24px;
  }
  .page-faq .page-hero__lead {
    font-size: 17px;
  }
  .page-faq .section-head h2 {
    font-size: 30px;
  }
  .page-faq .faq-list {
    max-width: 880px;
  }
  .page-faq .faq-item summary {
    padding: 18px 20px;
    font-size: 17px;
  }
  .page-faq .faq-item__body {
    padding: 0 22px 22px 80px;
  }
  .page-faq .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .page-faq .step-card {
    padding: 20px;
  }
  .page-faq .spec-tables {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .page-faq .feedback-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .page-faq .feedback-item {
    flex-direction: column;
  }
}

@media (min-width: 960px) {
  .page-faq .container {
    max-width: 1240px;
    padding-left: 24px;
    padding-right: 24px;
  }
  .page-faq .page-hero h1 {
    font-size: 44px;
  }
  .page-faq .faq-list {
    max-width: 920px;
    gap: 14px;
  }
  .page-faq .spec-card {
    padding: 20px;
  }
  .page-faq .spec-table-wrap .compare-table {
    min-width: 560px;
  }
}