.page-faq {
  --faq-gap: clamp(24px, 4vw, 56px);
  --faq-copper-soft: rgba(183, 116, 74, 0.14);
  --faq-cyan-soft: rgba(56, 225, 214, 0.12);
  padding-block: clamp(20px, 3vw, 36px) clamp(56px, 8vw, 104px);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 32px);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--line-soft);
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
}

.page-faq .faq-hero-copy .eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
}

.page-faq .faq-hero-copy .display-1 {
  margin: 0;
  font-size: clamp(40px, 8vw, 76px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-faq .faq-hero-line {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-hero-copy .lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero-rail {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-rail-item {
  background: var(--bg-raised);
  padding: 18px 20px;
  position: relative;
}

.page-faq .faq-rail-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--gold), transparent);
}

.page-faq .faq-rail-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  letter-spacing: 0.02em;
  color: var(--gold-bright);
  margin: 6px 0 8px;
}

.page-faq .faq-rail-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-faq .coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--copper);
}

/* 布局 */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(28px, 4vw, 52px);
}

.page-faq .faq-index {
  align-self: start;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--bg-raised), var(--bg));
  padding: 18px 18px 20px;
}

.page-faq .faq-index-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px 9px 8px;
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--ivory);
  background: rgba(214, 168, 90, 0.08);
  border-left-color: var(--gold);
  outline: none;
}

.page-faq .faq-index-list a[aria-current] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(56, 225, 214, 0.06);
}

.page-faq .faq-index-list a:focus-visible {
  box-shadow: 0 0 0 2px var(--gold-bright), 0 0 0 4px var(--cyan);
}

.page-faq .faq-index-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate);
}

/* 章节 */
.page-faq .faq-content {
  display: grid;
  gap: clamp(36px, 5vw, 72px);
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-section-head {
  max-width: 66ch;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-section-head .coord {
  display: inline-block;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 12px;
  color: var(--gold);
}

.page-faq .faq-section-head .h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-faq .faq-section-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .link-arrow {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 214, 0.4);
  padding-bottom: 1px;
}

.page-faq .link-arrow:hover,
.page-faq .link-arrow:focus-visible {
  color: var(--gold-bright);
  border-bottom-color: var(--gold-bright);
  outline: none;
}

.page-faq .faq-tip {
  margin: 18px 0 0;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  background: var(--bg-inset);
  border-left: 2px solid var(--copper);
}

/* 步骤 */
.page-faq .faq-steps {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-step {
  background: var(--bg-raised);
  padding: 20px 18px;
  position: relative;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-step:hover {
  background: var(--ink-700);
}

.page-faq .faq-step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-faq .faq-step .h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--ivory);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* 面板卡片 */
.page-faq .faq-card {
  background: var(--bg-raised);
}

.page-faq .faq-card .card-text {
  color: var(--text-dim);
  line-height: 1.85;
}

.page-faq .faq-card .card-meta {
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .faq-checks {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-checks li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-checks li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

/* 折叠问答 */
.page-faq .faq-accordion {
  border-top: 1px solid var(--line);
}

.page-faq .faq-qa {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-qa[open] {
  background: rgba(13, 27, 46, 0.7);
}

.page-faq .faq-qa summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 14px 16px 4px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ivory);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-qa summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-qa[open] summary::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .faq-qa summary:hover {
  color: var(--gold-bright);
}

.page-faq .faq-qa summary:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 1px var(--gold-bright), inset 0 0 0 2px var(--cyan);
  border-radius: var(--radius);
}

.page-faq .faq-answer {
  padding: 0 14px 20px 4px;
  max-width: 70ch;
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
}

/* 价格 */
.page-faq .faq-price-media {
  margin: 0 0 26px;
  border: 1px solid var(--line);
  background: var(--bg-raised);
}

.page-faq .faq-price-list {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-price-row {
  background: var(--bg-raised);
  padding: 20px 18px 22px;
  position: relative;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-price-row::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 1px;
  height: 0;
  background: var(--gold);
  transition: height var(--dur-slow) var(--ease);
}

.page-faq .faq-price-row:hover,
.page-faq .faq-price-row:focus-within {
  background: var(--ink-700);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}

.page-faq .faq-price-row:hover::after,
.page-faq .faq-price-row:focus-within::after {
  height: 100%;
}

.page-faq .faq-price-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-faq .faq-price-head .h3 {
  margin: 0;
  font-size: 17px;
  color: var(--ivory);
}

.page-faq .faq-price-amount {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: 0.04em;
  color: var(--copper);
}

.page-faq .faq-price-scene {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-price-fit {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

/* 速度对比 */
.page-faq .faq-speed-chart {
  display: grid;
  gap: 16px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  background:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px) 0 0 / 48px 100%,
    var(--bg-raised);
  margin-bottom: 24px;
}

.page-faq .faq-speed-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-faq .faq-speed-label {
  font-size: 13px;
  color: var(--text-dim);
}

.page-faq .faq-speed-track {
  height: 10px;
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-speed-fill {
  display: block;
  height: 100%;
  width: var(--w, 100%);
  background: linear-gradient(to right, var(--copper), var(--crimson));
  transform-origin: left center;
  animation: faq-bar-grow 640ms var(--ease) both;
}

.page-faq .faq-speed-fill--hot {
  background: linear-gradient(to right, var(--gold), var(--cyan));
}

.page-faq .faq-speed-value {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--gold-bright);
}

@keyframes faq-bar-grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.page-faq .faq-speed-media {
  margin: 0 0 26px;
  border: 1px solid var(--line);
  background: var(--bg-raised);
}

.page-faq .faq-advice {
  gap: 14px;
}

.page-faq .faq-advice-item {
  padding: 16px 16px 18px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--copper);
  background: var(--bg-raised);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-advice-item:hover {
  border-color: var(--line-strong);
  border-top-color: var(--gold);
}

.page-faq .faq-advice-item .h3 {
  margin: 8px 0 8px;
  font-size: 16px;
  color: var(--ivory);
}

.page-faq .faq-advice-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* 联系支持 */
.page-faq .faq-section--support {
  border-top-color: var(--line-strong);
}

.page-faq .faq-support-grid {
  display: grid;
  gap: 22px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--ink-800), var(--bg));
}

.page-faq .faq-support-body .contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-support-body .contact-item {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-support-body .contact-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .faq-support-body .contact-value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ivory);
  word-break: break-word;
}

.page-faq .faq-support-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-support-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

/* 媒体通用 */
.page-faq .media {
  overflow: hidden;
}

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

.page-faq .media-caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
  border-top: 1px solid var(--line-soft);
}

/* 窄屏兜底 */
@media (max-width: 559px) {
  .page-faq .faq-hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .faq-index-list a {
    font-size: 13px;
    padding: 8px 6px;
  }
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-speed-row {
    grid-template-columns: 132px minmax(0, 1fr) 104px;
    align-items: center;
    gap: 16px;
  }

  .page-faq .faq-speed-value {
    text-align: right;
  }

  .page-faq .faq-support-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }
}

/* 桌面 */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-speed-fill {
    animation: none;
  }

  .page-faq .faq-price-row,
  .page-faq .faq-step,
  .page-faq .faq-advice-item {
    transition: none;
  }
}

.page-faq {
  --w: 1rem;
}