.page-faq {
  --faq-line: var(--ink-700);
  --faq-onwarm: rgba(11, 21, 34, .76);
  padding-top: calc(var(--bar-h) + 20px);
  background: var(--ink-900);
  color: var(--paper-050);
}

.page-faq .section {
  padding-top: 56px;
  padding-bottom: 8px;
}

@media (min-width: 900px) {
  .page-faq .section {
    padding-top: 88px;
    padding-bottom: 12px;
  }
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 20px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: end;
  }
}

.page-faq .faq-hero__title {
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(32px, 7vw, 60px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper-050);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__title {
    margin-left: -28px;
    max-width: 13em;
  }
}

.page-faq .faq-hero__lede {
  max-width: 40em;
  margin: 0;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__media::before {
  content: "";
  position: absolute;
  top: -16px;
  right: -16px;
  width: 112px;
  height: 112px;
  background: linear-gradient(135deg, var(--solar-500), var(--solar-300));
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  z-index: 2;
  pointer-events: none;
}

.page-faq .faq-hero__media .media {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--faq-line);
}

.page-faq .faq-hero__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- 四组索引 ---------- */
.page-faq .faq-index {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-index__row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 6px 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-index__link {
  grid-column: 2;
  justify-self: start;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mint-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 232, 184, .38);
  padding-bottom: 2px;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--solar-300);
  border-bottom-color: var(--solar-300);
}

@media (min-width: 900px) {
  .page-faq .faq-index__row {
    grid-template-columns: 84px 1fr 180px;
    gap: 32px;
    align-items: center;
    padding: 24px 0;
  }

  .page-faq .faq-index__row:nth-child(even) {
    padding-left: 56px;
  }

  .page-faq .faq-index__link {
    grid-column: auto;
    justify-self: end;
    margin-top: 0;
  }
}

.page-faq .faq-index__num {
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1;
  color: var(--solar-500);
}

.page-faq .faq-index__name {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-050);
}

.page-faq .faq-index__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 吸附标签条 ---------- */
.page-faq .faq-tabs {
  position: sticky;
  top: var(--bar-h);
  z-index: 6;
  margin-top: 40px;
  background: rgba(11, 21, 34, .95);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-tabs__inner {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-top: 10px;
  padding-bottom: 10px;
  scrollbar-width: none;
}

.page-faq .faq-tabs__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-tabs__label {
  flex: none;
  margin-right: 4px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--steel-400);
}

.page-faq .faq-tab {
  flex: none;
  padding: 7px 14px;
  border: 1px solid var(--faq-line);
  color: var(--text-dim);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .24s var(--ease), color .24s var(--ease);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  border-color: var(--mint-400);
  color: var(--paper-050);
}

/* ---------- 常开长条区块 ---------- */
.page-faq .faq-panel {
  border: 1px solid var(--faq-line);
  padding: 30px 22px 32px;
}

@media (min-width: 900px) {
  .page-faq .faq-panel {
    padding: 56px 56px 48px;
  }
}

.page-faq .faq-panel--warm {
  background: var(--solar-100);
  border-color: var(--solar-300);
  color: var(--ink-900);
}

.page-faq .faq-panel--dark {
  background: var(--ink-800);
  border-color: var(--faq-line);
  color: var(--paper-050);
}

.page-faq .faq-panel__tag {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--solar-600);
}

.page-faq .faq-panel__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.6vw, 36px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-faq .faq-panel--dark .faq-panel__title {
  color: var(--paper-050);
}

.page-faq .faq-panel__lede {
  margin: 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-onwarm);
}

.page-faq .faq-panel--dark .faq-panel__lede {
  color: var(--text-dim);
}

/* 步骤 */
.page-faq .faq-steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  margin-left: 15px;
  padding: 0 0 26px 44px;
  border-left: 1px solid rgba(11, 21, 34, .22);
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-faq .faq-panel--dark .faq-step {
  border-left-color: rgba(245, 247, 250, .18);
}

.page-faq .faq-panel--dark .faq-step:last-child {
  border-left-color: transparent;
}

.page-faq .faq-step__num {
  position: absolute;
  left: -15px;
  top: -2px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: var(--ink-900);
  color: var(--solar-300);
  font-size: 12px;
  line-height: 1;
}

.page-faq .faq-panel--dark .faq-step__num {
  background: var(--solar-500);
  color: var(--ink-900);
}

.page-faq .faq-step__title {
  margin: 2px 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-onwarm);
}

.page-faq .faq-panel--dark .faq-step__text {
  color: var(--text-dim);
}

.page-faq .faq-panel__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 34px;
}

.page-faq .faq-panel__hint {
  font-size: 13px;
  color: rgba(11, 21, 34, .6);
}

/* 适用条件标签 */
.page-faq .faq-condition {
  margin: 0 0 16px;
}

.page-faq .faq-condition a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--mint-400);
  color: var(--mint-400);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: background-color .24s var(--ease);
}

.page-faq .faq-condition a:hover,
.page-faq .faq-condition a:focus-visible {
  background: rgba(43, 232, 184, .14);
}

/* 苹果设备清单 */
.page-faq .faq-ios {
  margin-top: 34px;
  padding: 20px 20px 22px;
  border: 1px dashed var(--faq-line);
  background: rgba(11, 21, 34, .5);
}

.page-faq .faq-ios__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--solar-300);
}

.page-faq .faq-ios__list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.9;
}

/* ---------- 设备记录 ---------- */
.page-faq .faq-record__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 32px;
}

@media (min-width: 900px) {
  .page-faq .faq-record__grid {
    grid-template-columns: 6fr 5fr;
    gap: 56px;
    align-items: center;
    margin-top: 40px;
  }
}

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

.page-faq .faq-record__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-record__list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-line);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

@media (min-width: 640px) {
  .page-faq .faq-record__list li {
    grid-template-columns: 96px 1fr;
    gap: 20px;
  }
}

.page-faq .faq-record__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--solar-300);
}

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

.page-faq .faq-record__media .media {
  aspect-ratio: 10 / 7;
  border: 1px solid var(--faq-line);
}

.page-faq .faq-record__media .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 三项自查 ---------- */
.page-faq .faq-check {
  margin-top: 34px;
  border-left: 3px solid var(--solar-500);
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 20px 0 20px 18px;
  border-bottom: 1px solid var(--faq-line);
}

@media (min-width: 900px) {
  .page-faq .faq-check__item {
    grid-template-columns: 96px 200px 1fr;
    align-items: baseline;
    gap: 24px;
    padding: 24px 0 24px 26px;
  }
}

.page-faq .faq-check__num {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--steel-400);
}

.page-faq .faq-check__item h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-050);
}

.page-faq .faq-check__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-groups {
  margin-top: 40px;
}

.page-faq .faq-group {
  margin-top: 44px;
}

.page-faq .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--solar-500);
}

.page-faq .faq-group__head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper-050);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--paper-050);
  transition: color .24s var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "";
  flex: none;
  width: 0;
  height: 0;
  margin-top: 8px;
  border-left: 7px solid var(--solar-500);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform .24s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--solar-300);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(90deg);
}

.page-faq .faq-item__q:hover {
  color: var(--solar-300);
}

.page-faq .faq-item__a {
  max-width: 48em;
  padding: 0 0 24px;
}

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

.page-faq .faq-item__a p:last-of-type {
  margin-bottom: 16px;
}

.page-faq .faq-item__a .btn {
  margin-top: 2px;
}

/* ---------- 末尾入口 ---------- */
.page-faq .faq-cta__box {
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(circle at 88% 10%, rgba(255, 122, 24, .24), transparent 58%),
    var(--ink-800);
  padding: 32px 22px;
}

@media (min-width: 900px) {
  .page-faq .faq-cta__box {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 48px;
    align-items: center;
    padding: 48px 56px;
  }
}

.page-faq .faq-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper-050);
}

.page-faq .faq-cta__copy p {
  margin: 0 0 12px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-cta__mail {
  margin: 0;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--mint-400);
  word-break: break-all;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}

@media (min-width: 900px) {
  .page-faq .faq-cta__actions {
    margin-top: 0;
  }
}

.page-faq .faq-cta {
  padding-bottom: 56px;
}

@media (min-width: 900px) {
  .page-faq .faq-cta {
    padding-bottom: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__q::after,
  .page-faq .faq-index__link,
  .page-faq .faq-tab,
  .page-faq .faq-item__q {
    transition: none;
  }
}</main>