.page-faq {
  --faq-panel: var(--ink-800);
  --faq-sticky: 96px;
  --faq-rule: 2px;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--dim);
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-faq .breadcrumb a {
  color: var(--haze);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  color: var(--teal);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  border-bottom: var(--faq-rule) solid var(--line);
  background:
    linear-gradient(180deg, rgba(47, 243, 214, 0.07), rgba(6, 17, 13, 0) 62%),
    repeating-linear-gradient(90deg, rgba(28, 74, 58, 0.35) 0 1px, transparent 1px 96px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-block: clamp(26px, 5vw, 56px);
}

.page-faq .faq-hero__main h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 7vw, 60px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 10px 0 16px;
  color: var(--paper);
}

.page-faq .faq-hero__main .eyebrow {
  display: inline-block;
  padding: 4px 10px;
  border: var(--faq-rule) solid var(--line);
  background: var(--ink-800);
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-actions .btn {
  display: inline-block;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
  border: var(--faq-rule) solid transparent;
  transition: transform var(--speed) var(--ease), background-color var(--speed) var(--ease);
}

.page-faq .faq-actions .btn--accent {
  background: var(--orange);
  color: var(--ink-900);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-actions .btn--ghost {
  background: transparent;
  color: var(--teal);
  border-color: var(--teal);
}

.page-faq .faq-actions .btn:hover {
  transform: translate(-2px, -2px);
}

.page-faq .faq-hero__side {
  border: var(--faq-rule) solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard-sm);
  padding: 16px;
}

.page-faq .faq-hero__side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-faq .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  background: var(--ink-900);
  border: var(--faq-rule) solid var(--line);
}

.page-faq .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 34px);
  line-height: 1;
  color: var(--teal);
}

.page-faq .stat__label {
  font-size: 12px;
  line-height: 1.4;
  color: var(--dim);
}

.page-faq .stat--orange {
  border-color: var(--orange);
  background: rgba(255, 122, 43, 0.1);
}

.page-faq .stat--orange .stat__value {
  color: var(--orange);
}

.page-faq .stat--orange .stat__label {
  color: var(--haze);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  padding-top: clamp(26px, 4vw, 48px);
}

.page-faq .faq-index {
  border: var(--faq-rule) solid var(--line);
  background: var(--ink-800);
  padding: 14px;
}

.page-faq .faq-index__head h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-index__note {
  margin: 0 0 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--dim);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 4px 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
}

.page-faq .faq-index__list > li {
  scroll-snap-align: start;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 7px;
  min-width: 196px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-left: 3px solid var(--line);
  color: var(--haze);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: color var(--speed) var(--ease), background-color var(--speed) var(--ease),
    border-color var(--speed) var(--ease);
}

.page-faq .faq-index__link:hover {
  color: var(--paper);
  background: rgba(47, 243, 214, 0.09);
  border-left-color: var(--teal);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--teal-deep);
}

.page-faq .faq-index__link--pinned {
  background: var(--orange);
  border-left-color: var(--ember);
  color: var(--ink-900);
  font-weight: 700;
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-index__link--pinned .faq-index__num {
  color: var(--ink-900);
}

.page-faq .faq-index__link--pinned:hover {
  background: var(--ember);
  color: var(--paper);
}

.page-faq .faq-index__link--pinned:hover .faq-index__num {
  color: var(--paper);
}

.page-faq .faq-figure {
  margin: 14px 0 0;
  border: var(--faq-rule) solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-figure img,
.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92) brightness(0.94);
}

.page-faq .faq-figure figcaption,
.page-faq .faq-shot figcaption {
  padding: 8px 10px;
  border-top: var(--faq-rule) solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--dim);
}

/* ---------- 阅读区 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-faq .faq-group > h2 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: var(--faq-rule) solid var(--line);
  font-family: var(--font-display);
  font-size: clamp(19px, 3.4vw, 27px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__range {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--teal-deep);
}

.page-faq .faq-entry {
  border: var(--faq-rule) solid var(--line);
  background: var(--faq-panel);
  margin-bottom: 8px;
  transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.page-faq .faq-entry:hover {
  border-color: var(--teal-deep);
}

.page-faq .faq-entry[data-open] {
  border-color: var(--teal);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-entry--pinned {
  border-color: var(--orange);
  box-shadow: 6px 6px 0 rgba(216, 65, 14, 0.3);
  background: linear-gradient(180deg, rgba(255, 122, 43, 0.07), rgba(12, 32, 25, 1) 42%);
}

.page-faq .faq-entry--pinned:hover {
  border-color: var(--orange);
}

.page-faq .faq-entry:target {
  animation: faq-flash 1.8s ease-out 1;
}

@keyframes faq-flash {
  0%,
  45% {
    box-shadow: 0 0 0 6px rgba(255, 122, 43, 0.28);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 122, 43, 0);
  }
}

.page-faq .faq-entry h3 {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  width: 100%;
  padding: 13px 14px;
  background: transparent;
  border: 0;
  color: var(--paper);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-faq .faq-trigger:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -2px;
}

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

.page-faq .faq-entry--pinned .faq-num {
  color: var(--orange);
}

.page-faq .faq-title {
  flex: 1 1 12rem;
  min-width: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.page-faq .faq-tag {
  flex: 0 0 auto;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  color: var(--dim);
}

.page-faq .faq-tag--multi {
  border-color: var(--teal);
  color: var(--teal);
  background: rgba(47, 243, 214, 0.08);
}

.page-faq .faq-entry--pinned .faq-tag--multi {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 122, 43, 0.12);
}

.page-faq .faq-arrow {
  flex: 0 0 auto;
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--haze);
  border-bottom: 2px solid var(--haze);
  transform: rotate(45deg);
  transition: transform var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .faq-entry[data-open] .faq-arrow {
  transform: rotate(-135deg);
  border-color: var(--teal);
}

.page-faq .faq-entry--pinned .faq-arrow {
  border-color: var(--orange);
}

.page-faq .faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 220ms var(--ease);
}

.page-faq .faq-entry[data-open] > .faq-panel {
  max-height: 140rem;
}

.page-faq .faq-panel__inner {
  padding: 4px 14px 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--haze);
}

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

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

.page-faq .faq-panel__inner h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

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

.page-faq .faq-panel__inner a:hover {
  color: var(--orange);
}

.page-faq .faq-shot {
  margin: 16px 0;
  border: var(--faq-rule) solid var(--line);
  background: var(--ink-900);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-steps {
  position: relative;
  list-style: none;
  margin: 16px 0;
  padding: 0 0 0 26px;
  display: grid;
  gap: 16px;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--teal), var(--teal-deep) 70%, var(--line));
}

.page-faq .faq-steps li {
  position: relative;
}

.page-faq .faq-steps__n {
  position: absolute;
  left: -26px;
  top: 1px;
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  background: var(--teal);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1;
}

.page-faq .faq-entry--pinned .faq-steps__n {
  background: var(--orange);
}

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

.page-faq .faq-next {
  margin-top: 14px;
  padding: 10px 12px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 122, 43, 0.1);
  font-size: 13px;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(34px, 6vw, 64px);
  padding: clamp(18px, 4vw, 34px);
  border: var(--faq-rule) solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
  display: grid;
  gap: 22px;
}

.page-faq .faq-contact h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.6vw, 30px);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--paper);
}

.page-faq .faq-contact__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--haze);
}

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

.page-faq .faq-contact .btn {
  display: inline-block;
  padding: 10px 16px;
  border: var(--faq-rule) solid var(--teal);
  border-radius: var(--radius);
  color: var(--teal);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: background-color var(--speed) var(--ease), color var(--speed) var(--ease);
}

.page-faq .faq-contact .btn:hover {
  background: var(--teal);
  color: var(--ink-900);
}

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

.page-faq .faq-channels li {
  display: grid;
  gap: 3px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal-deep);
  background: var(--ink-900);
}

.page-faq .faq-channels__k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.page-faq .faq-channels__v {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-channels__s {
  font-size: 12px;
  line-height: 1.6;
  color: var(--dim);
}

.page-faq .faq-channels__s a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__main .lede {
    font-size: 16px;
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-title {
    font-size: 16px;
  }

  .page-faq .faq-panel__inner {
    padding: 4px 20px 22px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-shell {
    grid-template-columns: minmax(0, 292px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    max-height: calc(100vh - var(--faq-sticky) - 24px);
    overflow-y: auto;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 1px;
    overflow-x: visible;
  }

  .page-faq .faq-index__link {
    min-width: 0;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-entry--pinned {
    margin-inline: -14px;
    padding-inline: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-panel,
  .page-faq .faq-arrow,
  .page-faq .faq-index__link,
  .page-faq .faq-actions .btn {
    transition: none;
  }

  .page-faq .faq-entry:target {
    animation: none;
    box-shadow: 0 0 0 4px rgba(255, 122, 43, 0.32);
  }
}

@media (scripting: none) {
  .page-faq .faq-panel {
    max-height: none;
    overflow: visible;
  }
}