.page-faq {
  --faq-body: #C9D6CF;
  --faq-edge: rgba(30, 74, 60, 0.9);
  --faq-gold-edge: rgba(232, 180, 90, 0.45);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-top__body {
  margin-top: 18px;
  max-width: 900px;
}

.page-faq .faq-top__title {
  margin: 10px 0 18px;
  font-size: clamp(28px, 5.6vw, 54px);
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-faq .faq-top__lead {
  max-width: 62ch;
}

.page-faq .faq-top__meta {
  margin: 18px 0 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--cyan);
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.page-faq .faq-jump a::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  flex: none;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: rgba(61, 245, 208, 0.12);
  border-color: var(--cyan);
}

/* ---------- 文档目录 ---------- */
.page-faq .faq-docs__head {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
}

.page-faq .faq-docs__head h2 {
  margin: 8px 0 0;
}

.page-faq .faq-docs__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 56ch;
}

.page-faq .faq-docs__media {
  margin: 0 0 24px;
  max-height: 300px;
  overflow: hidden;
}

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

.page-faq .faq-tablist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.page-faq .faq-tab {
  display: grid;
  gap: 4px;
  text-align: left;
  padding: 14px 16px;
  background: var(--bg-panel);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.page-faq .faq-tab:hover {
  border-color: var(--cyan);
}

.page-faq .faq-tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--black);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-tab__num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-faq .faq-tab__label {
  font-family: var(--font-narrow);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.page-faq .faq-tab__hint {
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab__hint {
  color: rgba(3, 12, 9, 0.72);
}

.page-faq .faq-panel {
  border: 2px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: var(--bg-panel);
  border-radius: var(--radius);
  padding: 16px 18px 8px;
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-panel[hidden] {
  display: none;
}

.page-faq .faq-panel:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

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

.page-faq .doc-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px dashed var(--faq-edge);
  font-size: 14.5px;
  line-height: 1.65;
}

.page-faq .doc-list li:last-child {
  border-bottom: 0;
}

.page-faq .doc-idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-faq .doc-title {
  color: var(--ink);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-answers__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-answers__main h2 {
  margin: 8px 0 12px;
}

.page-faq .faq-answers__intro {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 60ch;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 42, 34, 0.92), rgba(7, 28, 23, 0.94));
  border-radius: var(--radius);
  margin-bottom: 10px;
  transition: border-color 0.2s;
}

.page-faq .faq-item[open] {
  border-left-color: var(--orange);
}

.page-faq .faq-item:hover {
  border-color: var(--line);
  border-left-color: var(--cyan);
}

.page-faq .faq-item[open]:hover {
  border-left-color: var(--orange);
}

.page-faq .faq-item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 15px 46px 15px 16px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] summary::after {
  content: "\2212";
  color: var(--orange);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__body {
  padding: 0 16px 16px;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
}

/* ---------- 侧栏卡片 ---------- */
.page-faq .faq-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-card {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
  padding: 20px;
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-card--channel {
  border-top: 4px solid var(--orange);
}

.page-faq .faq-card--gold {
  border-color: var(--faq-gold-edge);
  border-top: 4px solid var(--gold);
  background: linear-gradient(160deg, rgba(232, 180, 90, 0.16), rgba(12, 42, 34, 0.95) 58%);
}

.page-faq .faq-card__title {
  margin: 12px 0 10px;
  font-family: var(--font-narrow);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-card__text {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .faq-card__mail {
  margin: 0;
  font-size: 13.5px;
  word-break: break-all;
  color: var(--cyan);
  padding-top: 12px;
  border-top: 1px dashed var(--faq-edge);
}

/* ---------- 安装要求 ---------- */
.page-faq .faq-system__grid {
  gap: 28px;
}

.page-faq .faq-system__text {
  margin: 12px 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
  max-width: 46ch;
}

.page-faq .spec-list {
  margin: 0;
}

.page-faq .spec-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .spec-row:first-child {
  border-top: 1px solid var(--line);
}

.page-faq .spec-row dt {
  font-family: var(--font-narrow);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .spec-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 收藏与导出 ---------- */
.page-faq .faq-export {
  position: relative;
}

.page-faq .faq-export::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(232, 180, 90, 0.1), rgba(7, 28, 23, 0.9) 62%);
  border-top: 1px solid var(--faq-gold-edge);
  border-bottom: 1px solid var(--faq-gold-edge);
  pointer-events: none;
}

.page-faq .faq-export .wrap {
  position: relative;
}

.page-faq .faq-export__head {
  max-width: 66ch;
  margin-bottom: 26px;
}

.page-faq .faq-export__head h2 {
  margin: 8px 0 12px;
}

.page-faq .faq-export__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
}

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

.page-faq .step-list > li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--faq-gold-edge);
}

.page-faq .step-list > li:last-child {
  border-bottom: 1px solid var(--faq-gold-edge);
}

.page-faq .step-list__num {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.page-faq .step-list__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-narrow);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .step-list__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body);
  max-width: 62ch;
}

.page-faq .faq-export__foot {
  margin: 26px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-body);
}

/* ---------- 通道与播放 ---------- */
.page-faq .faq-channel {
  display: grid;
  gap: 26px;
}

.page-faq .faq-channel__media {
  margin: 0;
}

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

.page-faq .faq-channel__body h2 {
  margin: 8px 0 12px;
}

.page-faq .faq-channel__text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
  max-width: 56ch;
}

.page-faq .step-list--compact > li {
  border-top: 1px solid var(--line);
  padding: 14px 0;
}

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

.page-faq .step-list--compact .step-list__num {
  color: var(--orange);
  font-size: 18px;
}

.page-faq .step-list--compact .step-list__body h3 {
  font-size: 16px;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-reach-section .faq-reach {
  display: grid;
  gap: 26px;
  border-top: 3px solid var(--cyan);
  padding-top: 34px;
}

.page-faq .faq-reach__main h2 {
  margin: 8px 0 12px;
}

.page-faq .faq-reach__text {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-body);
  max-width: 56ch;
}

.page-faq .faq-reach__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-faq .faq-reach__list li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-reach__label {
  font-family: var(--font-narrow);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-reach__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  word-break: break-all;
}

.page-faq .faq-reach__card {
  border: 2px solid var(--line);
  border-left: 4px solid var(--orange);
  background: var(--bg-panel);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-hard);
  align-self: start;
}

.page-faq .faq-reach__card h3 {
  margin: 0 0 16px;
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .reach-steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: reach;
}

.page-faq .reach-steps li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-body);
}

.page-faq .reach-steps .mono {
  font-size: 12.5px;
  color: var(--orange);
  letter-spacing: 0.04em;
}

.page-faq .faq-reach__note {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--faq-edge);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-tablist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-docs__media {
    max-height: 340px;
  }

  .page-faq .spec-row {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-faq .doc-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 26px;
  }

  .page-faq .doc-list li:nth-last-child(2) {
    border-bottom: 0;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-tablist {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-docs__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 22rem);
    align-items: end;
    gap: 28px;
  }

  .page-faq .faq-reach {
    grid-template-columns: minmax(0, 1fr) minmax(0, 24rem);
    gap: 36px;
  }

  .page-faq .faq-channel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 36px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-answers__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-system__grid {
    gap: 44px;
    align-items: start;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-top__title {
    font-size: 26px;
    line-height: 1.34;
  }

  .page-faq .doc-list li {
    font-size: 14px;
  }

  .page-faq .faq-item summary {
    font-size: 15px;
    padding-right: 38px;
  }

  .page-faq .faq-reach__list li {
    grid-template-columns: 1fr;
    gap: 3px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .faq-item,
  .page-faq .faq-jump a {
    transition: none;
  }
}