.page-faq {
  color: var(--text);
  font-family: var(--font-body);
}

.page-faq [id] {
  scroll-margin-top: 2rem;
}

/* 首屏导语区 */
.page-faq .faq-hero {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-7);
  align-items: flex-end;
  justify-content: space-between;
  padding: var(--space-6) 0 var(--space-5);
}

.page-faq .faq-hero::after {
  content: "";
  display: block;
  flex: 0 0 100%;
  height: 4px;
  margin-top: var(--space-4);
  background: repeating-linear-gradient(
    90deg,
    var(--orange) 0 48px,
    var(--blue) 48px 96px,
    var(--green) 96px 144px
  );
  opacity: 0.7;
}

.page-faq .faq-hero-copy {
  max-width: 70ch;
}

.page-faq .faq-kicker {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 0 var(--space-3);
}

.page-faq .faq-kicker .index-label {
  color: var(--blue);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.page-faq .faq-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4.5vw, 2.9rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-faq .faq-title-accent {
  display: inline-block;
  color: var(--orange);
  position: relative;
  white-space: nowrap;
}

.page-faq .faq-title-accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.1em;
  height: 8px;
  background: rgba(0, 194, 255, 0.22);
  z-index: -1;
}

.page-faq .faq-lead {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 1rem;
}

.page-faq .faq-hero-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  align-self: flex-start;
  border: 1px solid var(--line);
  padding: var(--space-3) var(--space-4);
  font-size: 0.88rem;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(57, 255, 20, 0.12);
}

.page-faq .status-text {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

/* 主布局：左侧目录 / 右侧内容 */
.page-faq .faq-layout {
  display: grid;
  gap: var(--space-7);
  padding: var(--space-5) 0 var(--space-8);
}

.page-faq .faq-main {
  display: grid;
  gap: var(--space-7);
  min-width: 0;
}

/* 目录侧栏 */
.page-faq .faq-aside {
  min-width: 0;
}

.page-faq .faq-index-card {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--paper-dim);
  padding: var(--space-5);
}

.page-faq .faq-index-card::after {
  content: "";
  display: block;
  height: 4px;
  margin-top: var(--space-4);
  background: linear-gradient(90deg, var(--orange) 0 40%, var(--blue) 40% 70%, var(--green) 70% 100%);
}

.page-faq .faq-index-image {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: var(--space-5);
}

.page-faq .faq-index-title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-head);
  font-size: 1.3rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.page-faq .faq-index-list li {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--paper-dim);
}

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

.page-faq .faq-index-list .index-label {
  font-size: 0.72rem;
  color: #666;
  min-width: 2rem;
}

.page-faq .faq-index-list a {
  position: relative;
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .faq-index-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 2px;
  width: 0;
  background: var(--blue);
  transition: width 0.2s ease;
}

.page-faq .faq-index-list a:hover {
  color: #8A4B00;
}

.page-faq .faq-index-list a:hover::after,
.page-faq .faq-index-list a:focus-visible::after {
  width: 100%;
}

/* 区块标题 */
.page-faq .faq-section-head {
  border-left: 4px solid var(--orange);
  padding-left: var(--space-4);
  margin-bottom: var(--space-5);
}

.page-faq .section-eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-faq .section-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-head);
  font-size: 2rem;
  line-height: 1.2;
}

.page-faq .section-desc {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  max-width: 60ch;
}

/* 手风琴：热门问题 */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3);
  border-left: 3px solid transparent;
  list-style: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

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

.page-faq .faq-item summary:hover {
  background: rgba(255, 255, 255, 0.035);
}

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

.page-faq .faq-item-index {
  min-width: 2.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--blue);
}

.page-faq .faq-item-question {
  flex: 1;
  font-family: var(--font-head);
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .faq-item-toggle {
  position: relative;
  flex: 0 0 1.25rem;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--muted);
  border-radius: 50%;
}

.page-faq .faq-item-toggle::before,
.page-faq .faq-item-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-item-toggle::before {
  width: 0.55rem;
  height: 2px;
}

.page-faq .faq-item-toggle::after {
  width: 2px;
  height: 0.55rem;
}

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

.page-faq .faq-item[open] .faq-item-toggle::before,
.page-faq .faq-item[open] .faq-item-toggle::after {
  background: var(--blue);
}

.page-faq .faq-item[open] .faq-item-toggle::after {
  transform: translate(-50%, -50%) scale(0);
}

.page-faq .faq-item-answer {
  padding: 0 var(--space-3) var(--space-5) calc(var(--space-3) + 3px + var(--space-3) + 2.4rem);
  color: var(--muted);
  line-height: 1.75;
  max-width: 70ch;
}

.page-faq .faq-item-answer p {
  margin: 0 0 var(--space-3);
}

.page-faq .faq-item-answer p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item-answer a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item[open] .faq-item-answer {
  animation: page-faq-reveal 0.24s ease;
}

@keyframes page-faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 分类指南 */
.page-faq .guide-media {
  margin-top: var(--space-5);
  padding: var(--space-2);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .guide-media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .guide-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.page-faq .guide-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--panel);
  border: 1px solid var(--line);
  padding: var(--space-5);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-faq .guide-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--orange);
}

.page-faq .guide-card:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
}

.page-faq .guide-card-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.page-faq .guide-card-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--blue);
}

.page-faq .guide-card-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--text);
}

.page-faq .guide-card-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-faq .guide-card-list {
  list-style: none;
  margin: 0 0 auto;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-faq .guide-card-list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.6;
}

.page-faq .guide-card-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 1.1rem;
}

.page-faq .guide-card-footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
}

.page-faq .guide-card-footer a {
  color: var(--blue);
  font-size: 0.9rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 联系支持 */
.page-faq .help-contact {
  margin: 0;
  padding: var(--space-7) 0;
}

.page-faq .help-contact .section-eyebrow {
  color: var(--blue);
}

.page-faq .help-contact .section-title {
  color: var(--ink);
}

.page-faq .help-contact .section-desc {
  color: rgba(26, 26, 26, 0.72);
}

.page-faq .contact-support-grid {
  display: grid;
  gap: var(--space-4);
}

.page-faq .contact-card {
  background: var(--ink);
  color: var(--text);
  border: 1px solid rgba(245, 240, 232, 0.12);
  border-left: 4px solid var(--orange);
  padding: var(--space-5);
}

.page-faq .contact-card-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-faq .contact-card-value {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.5;
}

.page-faq .contact-card-value a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .contact-card-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.page-faq .contact-card-hint a {
  color: var(--paper-dim);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .contact-support-note {
  margin: var(--space-5) 0 0;
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-faq .contact-support-note a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 可见焦点反馈 */
.page-faq .faq-index-list a:focus-visible,
.page-faq .faq-item summary:focus-visible,
.page-faq .guide-card a:focus-visible,
.page-faq .contact-card a:focus-visible,
.page-faq .contact-support-note a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
  border-radius: 2px;
}

/* 响应式：平板起两列指南与三列联系卡 */
@media (min-width: 48rem) {
  .page-faq .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .contact-support-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 响应式：桌面起左侧目录固定、右侧主内容 */
@media (min-width: 62rem) {
  .page-faq .faq-layout {
    grid-template-columns: 320px minmax(0, 1fr);
    align-items: start;
    gap: var(--space-7);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: var(--space-5);
  }

  .page-faq .faq-hero {
    flex-direction: row;
  }
}