.page-faq {
  --faq-line: rgba(16, 24, 32, 0.14);
  --faq-frame: 2px solid var(--c-ink);
  --faq-block-gap: clamp(28px, 4.5vw, 56px);
  background-color: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(18px, 4vw, 38px);
  padding-bottom: clamp(22px, 4vw, 42px);
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(16px, 2.5vw, 26px);
}

.page-faq .faq-hero__frame {
  position: relative;
  border: var(--faq-frame);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 88% 12%, rgba(255, 90, 31, 0.14), transparent 56%),
    var(--c-paper);
  box-shadow: var(--shadow-hard);
  padding: clamp(26px, 4.5vw, 52px) clamp(20px, 3.6vw, 48px) clamp(24px, 4vw, 44px);
  overflow: hidden;
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 13px;
  background-image: repeating-linear-gradient(90deg, var(--c-rock) 0 1px, transparent 1px 20px);
  opacity: 0.55;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
  margin-top: 16px;
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-size: clamp(30px, 5.6vw, 58px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-navy);
}

.page-faq .faq-hero__intro {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.75;
  color: var(--c-rock);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: var(--faq-frame);
  border-radius: var(--radius-sm);
  background: var(--c-navy);
  padding: 10px;
  position: relative;
}

.page-faq .faq-hero__media .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  object-fit: cover;
}

.page-faq .faq-hero__media .media-frame__tag {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-green);
}

/* 筛选胶囊 */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-chip {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 9px 17px;
  border-radius: var(--radius-pill);
  border: 2px solid var(--c-ink);
  background: var(--c-paper);
  color: var(--c-ink);
  cursor: pointer;
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-chip:hover {
  transform: translateY(-2px);
}

.page-faq .faq-chip.is-active {
  background: var(--c-orange);
  border-color: var(--c-orange-deep);
  color: var(--c-paper);
  box-shadow: 4px 4px 0 rgba(16, 24, 32, 0.18);
}

/* ---------- 主体双轴 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-faq .faq-index {
  border: var(--faq-frame);
  border-radius: var(--radius-lg);
  background: var(--c-cream);
  padding: clamp(18px, 3vw, 26px);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-clay);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  color: var(--c-navy);
  font-size: 15px;
  text-decoration: none;
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--c-paper);
  border-left-color: var(--c-orange);
  transform: translateX(3px);
}

.page-faq .faq-index__num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-rock);
}

/* 章节 */
.page-faq .faq-section {
  padding-block: var(--faq-block-gap);
  border-top: 2px solid var(--c-ink);
}

.page-faq .faq-section:first-of-type {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 26px);
  align-items: start;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-section__num {
  font-family: var(--font-data);
  font-size: clamp(34px, 5.2vw, 58px);
  line-height: 0.95;
  font-weight: 700;
  color: var(--c-orange);
}

.page-faq .faq-section__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
  font-weight: 800;
  color: var(--c-navy);
}

.page-faq .faq-section__lead {
  margin: 12px 0 0;
  font-size: clamp(15px, 1.3vw, 16px);
  line-height: 1.75;
  color: var(--c-rock);
  max-width: 62ch;
}

/* 三步自查卡 */
.page-faq .faq-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-checklist__item {
  background: var(--c-cream);
  border: var(--faq-frame);
  border-radius: var(--radius-sm);
  padding: 20px 20px 22px;
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-checklist__step {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-ink);
  background: var(--c-green);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  margin-bottom: 12px;
}

.page-faq .faq-checklist__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.35;
  color: var(--c-navy);
}

.page-faq .faq-checklist__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-rock);
}

/* 编号步骤 */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.2vw, 22px);
  padding: clamp(18px, 2.4vw, 24px);
  background: var(--c-cream);
  border-left: 4px solid var(--c-orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-faq .faq-steps__num {
  font-family: var(--font-data);
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1;
  font-weight: 700;
  color: var(--c-clay);
  opacity: 0.9;
}

.page-faq .faq-steps__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.35;
  color: var(--c-navy);
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-rock);
}

.page-faq .faq-steps--two .faq-steps__item {
  background: var(--c-paper);
  border: var(--faq-frame);
  border-left: 4px solid var(--c-orange);
}

/* 折叠说明 */
.page-faq .faq-more {
  margin-top: 18px;
  border: var(--faq-frame);
  border-radius: var(--radius-sm);
  background: var(--c-paper);
  overflow: hidden;
}

.page-faq .faq-more__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-navy);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-more__summary::after {
  content: "+";
  font-family: var(--font-data);
  font-size: 20px;
  line-height: 1;
  color: var(--c-orange);
}

.page-faq .faq-more[open] .faq-more__summary {
  background: var(--c-cream);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-more[open] .faq-more__summary::after {
  content: "–";
}

.page-faq .faq-more__body {
  padding: 16px 18px 18px;
}

.page-faq .faq-more__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-rock);
}

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

/* 图 */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 28px);
  border: var(--faq-frame);
  border-radius: var(--radius-sm);
  background: var(--c-navy);
  padding: 10px;
}

.page-faq .faq-figure .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  object-fit: cover;
}

.page-faq .faq-figure .media-frame__tag {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-green);
}

/* 对照表 */
.page-faq .faq-pairs {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border: var(--faq-frame);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--c-paper);
}

.page-faq .faq-pairs__row {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-pairs__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-pairs__row:nth-child(odd) {
  background: var(--c-cream);
}

.page-faq .faq-pairs__key {
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-navy);
}

.page-faq .faq-pairs__val {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-rock);
}

/* 联系区 */
.page-faq .faq-section--contact {
  border-top: 2px solid var(--c-ink);
}

.page-faq .faq-contact-card {
  background: var(--c-navy);
  color: var(--c-paper);
  border: var(--faq-frame);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3.6vw, 38px);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-contact__key {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-green);
  margin-bottom: 6px;
}

.page-faq .faq-contact__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-paper);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(247, 245, 240, 0.22);
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-cream);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-contact-card .btn--ghost {
  color: var(--c-paper);
  border-color: rgba(247, 245, 240, 0.5);
}

/* 返回索引 */
.page-faq .faq-backtop {
  padding-top: clamp(24px, 3.4vw, 40px);
  border-top: 2px solid var(--c-ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-checklist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-pairs__row {
    grid-template-columns: minmax(150px, 0.85fr) minmax(0, 1.8fr);
    gap: 22px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }

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

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

  .page-faq .faq-chip:hover,
  .page-faq .faq-index__link:hover {
    transform: none;
  }
}