.page-faq {
  --faq-pad-y: clamp(40px, 6vw, 88px);
  --faq-line: var(--line-c);
  background: var(--paper);
  color: var(--t-paper);
}

/* 首屏 */
.page-faq .faq-hero {
  background: var(--ink);
  color: var(--t-ink);
  padding: clamp(22px, 4vw, 40px) 0 clamp(32px, 5vw, 64px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: clamp(24px, 4vw, 48px);
}

.page-faq .faq-hero__kicker {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(38px, 8.2vw, 100px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  font-weight: 900;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--t-ink);
  opacity: 0.86;
}

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

.page-faq .faq-hero__anno {
  display: none;
  color: var(--stone);
}

/* 四问 */
.page-faq .faq-quick {
  background: var(--ink);
  color: var(--t-ink);
  padding: 0 0 clamp(40px, 6vw, 76px);
}

.page-faq .faq-quick__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-ink);
  border: 1px solid var(--line-ink);
}

.page-faq .faq-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 3vw, 30px);
  background: var(--ink-2);
  color: var(--t-ink);
  text-decoration: none;
  transition: background 0.2s var(--ease);
}

.page-faq .faq-card:hover,
.page-faq .faq-card:focus-visible {
  background: rgba(56, 242, 214, 0.09);
}

.page-faq .faq-card__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .faq-card__q {
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 800;
  line-height: 1.3;
}

.page-faq .faq-card__a {
  font-size: 14px;
  line-height: 1.75;
  opacity: 0.78;
}

.page-faq .faq-card--lead .faq-card__q {
  font-size: clamp(22px, 3vw, 32px);
}

/* 主体两栏 */
.page-faq .faq-shell {
  background: var(--paper);
  color: var(--t-paper);
}

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: var(--faq-pad-y) 0;
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border-bottom: 1px solid var(--faq-line);
  scrollbar-width: thin;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-toc__link .mono {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--t-paper);
  border-bottom-color: var(--cyan);
}

/* 章节 */
.page-faq .faq-sec {
  scroll-margin-top: 96px;
  padding: 0 0 clamp(32px, 4.5vw, 56px);
}

.page-faq .faq-sec + .faq-sec {
  border-top: 1px solid var(--faq-line);
  padding-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-sec--last {
  padding-bottom: 0;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-faq .faq-sec__num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--clay);
  flex: 0 0 auto;
}

.page-faq .faq-sec__title {
  margin: 0;
  font-size: clamp(21px, 3.1vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-faq .faq-sec__lead {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-sec__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* 图片 */
.page-faq .faq-media {
  display: block;
  margin: clamp(20px, 3vw, 32px) 0;
  border: 1px solid var(--faq-line);
  background: var(--paper-2);
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-faq .faq-media .media__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--faq-line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* 手风琴微调 */
.page-faq .acc {
  margin-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .acc__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--t-paper);
  cursor: pointer;
}

.page-faq .acc__btn:hover {
  color: var(--blue);
}

.page-faq .acc__btn:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.page-faq .acc__sign {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  color: var(--muted);
  transition: transform 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .acc__sign::before,
.page-faq .acc__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
}

.page-faq .acc__sign::before {
  width: 14px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.page-faq .acc__sign::after {
  width: 1px;
  height: 14px;
  transform: translate(-50%, -50%);
}

.page-faq .acc__btn[aria-expanded="true"] .acc__sign {
  transform: rotate(45deg);
  color: var(--cyan);
}

.page-faq .acc__body {
  padding: 0 0 18px;
}

.page-faq .acc__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* 三步 */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-step {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--paper);
}

.page-faq .faq-step__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .faq-step:last-child .faq-step__num {
  color: var(--orange);
}

.page-faq .faq-step:last-child {
  box-shadow: inset 0 3px 0 0 var(--orange);
}

.page-faq .faq-step__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.35;
}

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

/* 决策树 */
.page-faq .faq-tree {
  margin-top: clamp(8px, 1.5vw, 16px);
  padding-left: clamp(14px, 2.4vw, 26px);
  border-left: 1px solid var(--faq-line);
}

.page-faq .faq-tree__step {
  display: inline-block;
  margin-right: 8px;
  color: var(--blue);
  font-size: 13px;
}

/* 反馈清单 */
.page-faq .faq-checklist {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-checklist li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-checklist .mono {
  font-size: 12px;
  color: var(--clay);
}

/* 回访用户中心 */
.page-faq .faq-member {
  margin-top: clamp(20px, 3vw, 30px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-member__cell {
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--paper-2);
}

.page-faq .faq-member__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .faq-member__title {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.35;
}

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

/* 收口联系 */
.page-faq .faq-contact {
  margin-top: clamp(20px, 3vw, 28px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-contact__list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 10px;
  padding: 12px 14px;
  background: var(--paper-2);
  align-items: baseline;
}

.page-faq .faq-contact__key {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-contact__val {
  font-size: 14px;
  line-height: 1.6;
  color: var(--t-paper);
  word-break: break-word;
}

/* 媒体查询 */
@media (min-width: 620px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: 1.3fr 1fr;
    grid-auto-rows: 1fr;
  }

  .page-faq .faq-card--lead {
    grid-row: span 2;
  }

  .page-faq .faq-checklist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-checklist li {
    grid-template-columns: minmax(0, 1fr);
    border-bottom: 0;
    border-top: 2px solid var(--clay);
    padding: 12px 0 0;
    font-size: 14px;
  }

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

  .page-faq .faq-contact {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 24px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 88px);
    padding: clamp(56px, 6vw, 96px) 0 clamp(64px, 7vw, 104px);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-bottom: 0;
    border-left: 1px solid var(--faq-line);
    padding: 0;
  }

  .page-faq .faq-toc__link {
    display: flex;
    width: 100%;
    padding: 9px 0 9px 16px;
    margin-left: -1px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    white-space: normal;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    border-bottom-color: transparent;
    border-left-color: var(--cyan);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 64px;
    align-items: start;
    gap: 32px;
  }

  .page-faq .faq-hero__anno {
    display: block;
    justify-self: end;
    margin: 0;
    font-size: 11px;
    letter-spacing: 0.18em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .acc__sign,
  .page-faq .faq-card,
  .page-faq .faq-toc__link {
    transition: none;
  }
}