.page-faq {
  --faq-rule: rgba(15, 61, 85, .18);
  --faq-rule-soft: rgba(245, 240, 230, .18);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--navy-900);
  color: var(--paper);
  padding-block: clamp(20px, 4vw, 36px) clamp(44px, 7vw, 84px);
  border-bottom: 1px solid var(--navy-700);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(112deg, rgba(47, 227, 198, .055) 0 1px, transparent 1px 68px);
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-12);
  color: var(--mist-dark);
  letter-spacing: .02em;
}

.page-faq .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--navy-700);
}

.page-faq .breadcrumb-list a {
  color: var(--sand);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .breadcrumb-list a:hover,
.page-faq .breadcrumb-list a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--sand);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-56);
  line-height: 1.04;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero-lede {
  max-width: 34em;
  margin: 0 0 clamp(22px, 3vw, 32px);
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--mist-dark);
}

.page-faq .faq-steps {
  display: block;
  width: 100%;
  max-width: 640px;
  height: auto;
}

.page-faq .faq-hero-media {
  margin: 0;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-blob);
  filter: saturate(.88) contrast(1.04);
}

@media (min-width: 920px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
}

/* ---------- 正文框架 ---------- */
.page-faq .faq-body {
  padding-block: clamp(24px, 4vw, 48px) clamp(56px, 8vw, 96px);
}

.page-faq .faq-body-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

/* ---------- 分组目录 ---------- */
.page-faq .faq-toc {
  position: sticky;
  top: 0;
  z-index: 6;
  margin-inline: calc(var(--gutter) * -1);
  padding: 8px 0 8px var(--gutter);
  background: var(--navy-900);
  box-shadow: 0 1px 0 rgba(4, 20, 31, .12);
}

.page-faq .faq-toc-title {
  display: none;
}

.page-faq .faq-toc-list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--navy-700) transparent;
}

.page-faq .faq-toc-list li {
  flex: 0 0 auto;
}

.page-faq .faq-toc-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--mist-dark);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-toc-list a .mono {
  font-size: var(--fs-12);
  color: var(--orange);
}

.page-faq .faq-toc-list a:hover,
.page-faq .faq-toc-list a:focus-visible {
  color: var(--paper);
  border-color: var(--sand);
  background: rgba(220, 184, 120, .1);
}

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

@media (min-width: 960px) {
  .page-faq .faq-body-grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-faq .faq-toc {
    top: 88px;
    margin-inline: 0;
    padding: 22px 20px;
    border: 1px solid var(--navy-700);
    border-radius: 18px;
    background: var(--navy-900);
    box-shadow: none;
  }

  .page-faq .faq-toc-title {
    display: block;
    margin: 0 0 14px;
    font-family: var(--font-mono);
    font-size: var(--fs-12);
    letter-spacing: .12em;
    color: var(--sand);
  }

  .page-faq .faq-toc-list {
    flex-direction: column;
    gap: 2px;
    padding: 0 0 0 12px;
    border-left: 1px solid var(--navy-700);
    white-space: normal;
    overflow: visible;
  }

  .page-faq .faq-toc-list li {
    flex: 1 1 auto;
  }

  .page-faq .faq-toc-list a {
    width: 100%;
    justify-content: flex-start;
    white-space: normal;
    border-radius: 0 10px 10px 0;
    padding: 10px 12px;
    font-size: var(--fs-14);
    line-height: 1.5;
  }
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 5vw, 60px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 92px;
  padding-bottom: 4px;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: clamp(12px, 2vw, 20px);
  row-gap: 6px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--navy-900);
  margin-bottom: 6px;
}

.page-faq .faq-group-no {
  grid-row: 1 / span 2;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-36);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--orange);
}

.page-faq .faq-group-head h2 {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-26);
  line-height: 1.24;
  color: var(--navy-900);
}

.page-faq .faq-group-lede {
  grid-column: 2;
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--tide);
}

/* ---------- 折叠问题 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 48px;
  padding: 15px 6px;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-16);
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  transition: color 180ms var(--ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary::before {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
  transform: rotate(-45deg);
  transition: transform 200ms var(--ease);
}

.page-faq .faq-item[open] summary {
  color: var(--orange-deep);
}

.page-faq .faq-item[open] summary::before {
  transform: rotate(45deg);
}

.page-faq .faq-item summary:hover {
  color: var(--orange-deep);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: 4px;
}

.page-faq .faq-answer {
  padding: 0 6px 18px 27px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-answer a {
  color: var(--orange-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--sand);
}

.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  border-bottom-color: var(--orange);
}

.page-faq .faq-steps-list {
  counter-reset: faqstep;
  margin: 4px 0 12px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps-list li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
}

.page-faq .faq-steps-list li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--orange-deep);
  letter-spacing: .04em;
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 8px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: 20px 6px 20px 6px;
  filter: saturate(.9) contrast(1.03);
}

.page-faq .faq-figure-cap {
  margin: 10px 0 0;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--tide);
}

/* ---------- 联系渠道 ---------- */
.page-faq .faq-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-channel {
  padding: 20px;
  border: 1px solid var(--navy-700);
  border-radius: 18px 4px 18px 4px;
  background: var(--navy-900);
  color: var(--mist-dark);
}

.page-faq .faq-channel h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-20);
  color: var(--sand);
}

.page-faq .faq-channel-value {
  margin: 0 0 10px;
  font-size: var(--fs-16);
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-channel p:last-child {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.72;
}

.page-faq .faq-channel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease);
}

.page-faq .faq-channel a:hover,
.page-faq .faq-channel a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-tips {
  margin: 16px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--sand);
  border-radius: 0 10px 10px 0;
  background: rgba(220, 184, 120, .14);
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .faq-tips a {
  color: var(--orange-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--sand);
}

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

/* ---------- 延伸入口 ---------- */
.page-faq .faq-next {
  padding: 24px clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
  background: var(--navy-800);
  border-radius: 6px 24px 6px 24px;
  color: var(--paper);
}

.page-faq .faq-next h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-20);
  color: var(--paper);
}

.page-faq .faq-next-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-next-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 8px 6px;
  color: var(--mist-dark);
  font-size: var(--fs-14);
  line-height: 1.6;
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 240, 230, .1);
  transition: color 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-faq .faq-next-list a .mono {
  color: var(--orange);
}

.page-faq .faq-next-list a:hover,
.page-faq .faq-next-list a:focus-visible {
  color: var(--paper);
  padding-left: 12px;
}

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

@media (min-width: 720px) {
  .page-faq .faq-next-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary::before,
  .page-faq .faq-next-list a {
    transition: none;
  }
}