.page-faq {
  display: block;
  background: var(--ink-900);
  color: var(--paper);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-breadcrumb {
  padding-top: clamp(14px, 2.4vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 2.6vw, 28px) 0 clamp(34px, 5vw, 62px);
  background-image:
    radial-gradient(820px 380px at 84% -14%, rgba(61, 242, 214, 0.16), transparent 68%),
    radial-gradient(660px 340px at 2% 112%, rgba(255, 122, 47, 0.12), transparent 72%);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--font-data);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 9vw, 78px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__accent {
  color: var(--cyan);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: rgba(14, 34, 73, 0.6);
  font-size: var(--fs-14);
  color: var(--steel);
}

.page-faq .faq-hero__facts .data-mono {
  color: var(--cyan);
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  background: var(--ink-850);
}

.page-faq .faq-hero__figure::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 18px;
  width: 64px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-hero__figure .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  background: var(--ink-950);
}

.page-faq .faq-hero__figure .media-frame__caption {
  display: block;
  margin-top: 10px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  padding: clamp(38px, 5.5vw, 72px) 0 clamp(44px, 6vw, 84px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-body .section__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-faq .faq-body .section__lead {
  margin-top: 12px;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .faq-tabs {
  display: flex;
  flex-direction: row;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 190px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  background: var(--ink-850);
  color: var(--steel);
  font-family: var(--font-body);
  font-size: var(--fs-14);
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: color var(--t-fast), background-color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-tab:hover:not([aria-selected="true"]) {
  color: var(--paper);
  border-left-color: var(--cyan-soft);
}

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

.page-faq .faq-tab[aria-selected="true"] {
  color: var(--paper);
  background: var(--ink-800);
  border-left-color: var(--cyan);
}

.page-faq .faq-tab__label {
  flex: 1 1 auto;
}

.page-faq .faq-tab__count {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: var(--fs-12);
  color: var(--steel);
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab__count {
  color: var(--cyan);
}

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

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

.page-faq .faq-panel__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-panel__lead {
  margin: 0;
  max-width: 64ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-left: 3px solid var(--ink-800);
  background: var(--ink-850);
  transition: border-color var(--t-fast), background-color var(--t-fast);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: var(--ink-800);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

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

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--t-fast), opacity var(--t-fast);
}

.page-faq .faq-item__icon::before {
  left: 1px;
  right: 1px;
  top: 8px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  top: 1px;
  bottom: 1px;
  left: 8px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-item__icon::before {
  background: var(--cyan-soft);
}

.page-faq .faq-item__a {
  padding: 0 16px 16px 16px;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 66ch;
}

.page-faq .faq-item__a p:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-item__a strong {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .faq-item__a .data-mono {
  color: var(--cyan);
}

.page-faq .faq-bullets {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-bullets li {
  position: relative;
  padding-left: 16px;
  max-width: 64ch;
}

.page-faq .faq-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 10px 0 12px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 8px;
  align-items: baseline;
  max-width: 64ch;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--font-data);
  font-size: var(--fs-12);
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-faq .faq-item__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding-bottom: 2px;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 242, 214, 0.42);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-item__link::after {
  content: "→";
  font-family: var(--font-data);
}

.page-faq .faq-item__link:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding: clamp(40px, 6vw, 84px) 0 clamp(44px, 6vw, 88px);
  border-top: 1px solid var(--line);
  background-image: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-950) 100%);
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.5vw, 46px);
}

.page-faq .faq-support__lead {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-prep {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-prep li {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 12px;
  align-items: start;
  max-width: 62ch;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-prep li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-contact-card {
  position: relative;
  margin-top: 28px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  background: var(--ink-800);
}

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

.page-faq .faq-contact-card__text {
  margin: 0 0 18px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--steel);
}

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

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

.page-faq .faq-contact li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact__key {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-contact__val {
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact__val.data-mono {
  font-family: var(--font-data);
  color: var(--cyan);
  font-size: var(--fs-14);
}

.page-faq .faq-contact-card__btn {
  margin-top: 20px;
  text-decoration: none;
}

.page-faq .faq-support__figure {
  margin: 0;
  align-self: start;
  border: 1px solid var(--line);
  background: var(--ink-850);
  padding: 10px;
}

.page-faq .faq-support__figure .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  background: var(--ink-950);
}

.page-faq .faq-support__figure .media-frame__caption {
  display: block;
  margin-top: 10px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: faq-reveal var(--t-med) both;
  }

  .page-faq .faq-panel:not([hidden]) {
    animation: faq-panel-in var(--t-fast) both;
  }
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-item__q {
    padding: 17px 20px;
    gap: 14px;
  }

  .page-faq .faq-item__a {
    padding: 0 20px 20px 52px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-bottom: clamp(48px, 5vw, 72px);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: clamp(32px, 4vw, 60px);
  }

  .page-faq .faq-support__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: clamp(28px, 3.5vw, 48px);
    align-items: start;
  }

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

  .page-faq .faq-tabs {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-tab {
    width: 100%;
    min-width: 0;
  }

  .page-faq .faq-panel {
    padding-top: 2px;
  }
}