.page-faq {
  --faq-index-bg: #ECEAE5;
  --faq-white: #FFFFFF;
  --faq-index-w: 280px;
  overflow-x: hidden;
}

.page-faq .faq-hero {
  position: relative;
  background: linear-gradient(135deg, var(--brand-main) 0%, var(--dark-surface) 80%);
  color: #fff;
  padding: clamp(40px, 7vw, 88px) 0 clamp(48px, 8vw, 96px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
}

.page-faq .faq-hero .breadcrumbs {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-hero .breadcrumbs a {
  color: #fff;
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumbs a:hover {
  color: var(--orange-soft);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--data-font);
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-point);
}

.page-faq .faq-hero__kicker span {
  color: rgba(255, 255, 255, 0.6);
  text-transform: none;
}

.page-faq .faq-hero h1 {
  color: #fff;
  margin: 0 0 18px;
  font-size: var(--h1-size);
  line-height: 1.05;
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 64px;
  height: 5px;
  background: var(--brand-accent);
  margin-top: 20px;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 720px;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}

.page-faq .faq-hero__index {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  padding: 20px 22px;
}

.page-faq .faq-hero__index-label {
  display: block;
  font-family: var(--data-font);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-point);
  margin-bottom: 8px;
}

.page-faq .faq-hero__index ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-hero__index li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

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

.page-faq .faq-hero__index a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  color: #fff;
  text-decoration: none;
  font-size: 15px;
  transition: padding-left var(--ease-fast), color var(--ease-fast);
}

.page-faq .faq-hero__index a span {
  font-family: var(--data-font);
  color: var(--brand-accent);
}

.page-faq .faq-hero__index a:hover {
  color: var(--orange-soft);
  padding-left: 6px;
}

.page-faq .faq-guide {
  padding: clamp(32px, 5vw, 64px) 0 clamp(16px, 3vw, 32px);
}

.page-faq .faq-sec-head {
  display: flex;
  gap: 18px;
  margin-bottom: clamp(28px, 4vw, 44px);
  border-bottom: 4px solid var(--brand-main);
  padding-bottom: 16px;
}

.page-faq .faq-sec-head__num {
  font-family: var(--data-font);
  font-size: 28px;
  font-weight: 700;
  color: var(--brand-accent);
  line-height: 1;
}

.page-faq .faq-sec-head__tag {
  margin: 0 0 4px;
  font-family: var(--data-font);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-text);
}

.page-faq .faq-sec-head h2,
.page-faq .faq-cat h2 {
  margin: 0;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.15;
}

.page-faq .faq-sec-head__text p:last-child {
  margin: 10px 0 0;
  color: var(--muted-text);
  font-size: 15px;
  line-height: 1.6;
}

.page-faq .faq-guide__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq .faq-guide__step {
  position: relative;
  background: var(--faq-white);
  padding: 24px 20px 20px;
  border-top: 4px solid var(--brand-accent);
  box-shadow: 0 2px 14px rgba(7, 23, 46, 0.06);
}

.page-faq .faq-guide__step::after {
  content: "";
  position: absolute;
  left: 24px;
  bottom: -8px;
  width: 14px;
  height: 14px;
  background: var(--brand-main);
  transform: rotate(45deg);
}

.page-faq .faq-guide__step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--brand-accent);
  color: #fff;
  font-family: var(--data-font);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 14px;
}

.page-faq .faq-guide__step h3 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.3;
}

.page-faq .faq-guide__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted-text);
}

.page-faq .faq-guide__step a {
  color: var(--brand-accent);
  text-decoration: none;
}

.page-faq .faq-guide__step a:hover {
  text-decoration: underline;
}

.page-faq .faq-guide__figure {
  position: relative;
  margin: clamp(32px, 5vw, 48px) 0 0;
  padding: 10px;
  background: var(--dark-surface);
}

.page-faq .faq-guide__figure::before {
  content: "图解示例";
  position: absolute;
  top: 22px;
  left: 22px;
  z-index: 1;
  background: var(--brand-accent);
  color: #fff;
  font-family: var(--data-font);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 6px 10px;
}

.page-faq .faq-guide__figure img,
.page-faq .faq-cat__figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-guide__figure figcaption,
.page-faq .faq-cat__figure figcaption {
  padding: 12px 6px 4px;
  font-size: 13px;
  color: var(--muted-text);
}

.page-faq .faq-guide__figure figcaption {
  color: rgba(255, 255, 255, 0.74);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(40px, 7vw, 72px) 0 clamp(48px, 8vw, 96px);
}

.page-faq .faq-index {
  background: var(--faq-index-bg);
  padding: 18px 20px;
  align-self: start;
}

.page-faq .faq-index__details summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--heading-font);
  font-size: 18px;
  font-weight: 700;
  padding: 10px 0 12px;
  border-bottom: 2px solid var(--line-divider);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.page-faq .faq-index__details summary::after {
  content: "−";
  font-family: var(--data-font);
  color: var(--brand-accent);
  font-size: 20px;
}

.page-faq .faq-index__details:not([open]) summary::after {
  content: "+";
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 6px 0 10px;
}

.page-faq .faq-index__list li {
  border-bottom: 1px solid rgba(209, 213, 219, 0.7);
}

.page-faq .faq-index__list a {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 2px;
  color: var(--ink-text);
  text-decoration: none;
  font-size: 15px;
  transition: padding-left var(--ease-fast), color var(--ease-fast);
}

.page-faq .faq-index__list a::after {
  content: "→";
  color: var(--brand-accent);
  font-family: var(--data-font);
}

.page-faq .faq-index__list a:hover {
  color: var(--brand-accent);
  padding-left: 8px;
}

.page-faq .faq-index__card {
  margin-top: 20px;
  border-top: 1px solid var(--line-divider);
  padding: 18px 0 4px;
  font-size: 14px;
}

.page-faq .faq-index__card-label {
  margin: 0 0 6px;
  font-family: var(--data-font);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand-accent);
}

.page-faq .faq-index__card p:not(.faq-index__card-label) {
  margin: 0 0 12px;
  color: var(--muted-text);
  line-height: 1.6;
}

.page-faq .faq-index__card .btn {
  display: block;
  text-align: center;
}

.page-faq .faq-cat {
  padding-bottom: clamp(28px, 5vw, 56px);
  border-bottom: 1px solid var(--line-divider);
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-faq .faq-cat__head {
  margin-bottom: 20px;
  border-bottom: 3px solid var(--brand-accent);
  padding-bottom: 14px;
}

.page-faq .faq-cat__num {
  display: block;
  font-family: var(--data-font);
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-accent);
  margin-bottom: 6px;
}

.page-faq .faq-cat__head p {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--muted-text);
  line-height: 1.6;
}

.page-faq .faq-q-num {
  font-family: var(--data-font);
  font-weight: 700;
  font-size: 14px;
  color: var(--brand-accent);
  margin-right: 12px;
  flex-shrink: 0;
}

.page-faq .faq-q-text {
  flex: 1;
  padding-right: 12px;
}

.page-faq .faq-cat__figure {
  margin: 24px 0 0;
  border: 1px solid var(--line-divider);
  background: var(--faq-white);
  padding: 8px;
}

.page-faq .faq-content__foot {
  margin-top: clamp(32px, 5vw, 56px);
  padding: 28px;
  background: linear-gradient(135deg, var(--brand-main), var(--dark-surface));
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.page-faq .faq-content__foot p {
  margin: 0;
  font-family: var(--heading-font);
  font-size: 22px;
}

.page-faq .faq-content__foot-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 800px) {
  .page-faq .faq-guide__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 56px;
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__details summary {
    display: none;
  }

  .page-faq .faq-index__details::before {
    content: "目录索引";
    display: block;
    font-family: var(--heading-font);
    font-size: 18px;
    font-weight: 700;
    padding: 10px 0 12px;
    border-bottom: 2px solid var(--line-divider);
    margin-bottom: 4px;
  }
}