.page-faq {
  --faq-paper-ink: #16241F;
  --faq-paper-text: #3C4C46;
  --faq-paper-rule: rgba(22, 36, 31, .16);
  padding-bottom: clamp(40px, 6vw, 84px);
}

.page-faq .breadcrumb__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 18px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .breadcrumb__list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .breadcrumb__list li + li::before {
  content: "/";
  color: var(--grid);
}

.page-faq .breadcrumb__list a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .breadcrumb__list [aria-current="page"] {
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 4vw, 44px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 16px;
  max-width: 900px;
}

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--brick);
}

.page-faq .faq-mark {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  background: var(--brick);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(25px, 4.4vw, 44px);
  font-weight: 900;
  line-height: 1.26;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 4px 0 0;
  padding: 0;
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .faq-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  background: var(--brick);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-board {
  border-top: 1px solid var(--grid-line-strong);
  padding-top: clamp(24px, 3.4vw, 40px);
}

.page-faq .faq-board__inner {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
}

.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-stack {
  display: grid;
  gap: clamp(32px, 4.6vw, 56px);
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  display: grid;
  gap: 16px;
  scroll-margin-top: 24px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--grid-line-strong);
}

.page-faq .faq-group__no {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--brick);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(19px, 2.5vw, 26px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-group__body {
  display: grid;
  gap: var(--gap);
  min-width: 0;
}

/* ---------- 步骤卡 ---------- */
.page-faq .faq-cards {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-card {
  background: var(--panel);
  border: 1px solid var(--grid-line-strong);
  border-left: 3px solid var(--grid);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-card[open] {
  border-left-color: var(--cyan);
  background: var(--panel-2);
}

.page-faq .faq-card__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-card__summary::before {
  content: "";
  flex: 0 0 9px;
  height: 9px;
  margin-top: 8px;
  background: var(--brick);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-card[open] .faq-card__summary::before {
  background: var(--cyan);
}

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

.page-faq .faq-card__title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-card__cue {
  position: relative;
  flex: 0 0 14px;
  height: 14px;
  margin-left: auto;
  margin-top: 5px;
}

.page-faq .faq-card__cue::before,
.page-faq .faq-card__cue::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-card__cue::after {
  transform: rotate(90deg);
}

.page-faq .faq-card[open] .faq-card__cue::after {
  transform: rotate(0deg);
}

.page-faq .faq-card__body {
  display: grid;
  gap: 12px;
  padding: 0 16px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-card__body p {
  margin: 0;
}

.page-faq .faq-card__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-soft);
  transition: border-color var(--dur) var(--ease);
}

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

.page-faq .hl {
  color: var(--amber);
  font-weight: 600;
}

.page-faq .hl-cyan {
  color: var(--cyan);
  font-weight: 600;
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 34px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--cyan);
  border: 1px solid var(--grid-line-strong);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0;
  background: var(--ink-deep);
  border: 1px solid var(--grid-line-strong);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

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

.page-faq .faq-figure--wide {
  max-width: 640px;
}

/* ---------- 流程图 ---------- */
.page-faq .faq-flow {
  margin: 0;
  padding: clamp(14px, 2vw, 22px);
  background: var(--panel);
  border: 1px solid var(--grid-line-strong);
}

.page-faq .faq-flow svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-flow figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-flow .flow-box {
  fill: var(--ink-deep);
  stroke: var(--grid);
  stroke-width: 1;
}

.page-faq .faq-flow .flow-line {
  stroke: var(--cyan);
  stroke-width: 1.5;
  fill: none;
}

.page-faq .faq-flow .flow-arrow {
  fill: var(--cyan);
}

.page-faq .faq-flow .flow-num {
  fill: var(--brick);
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .1em;
}

.page-faq .faq-flow .flow-text {
  fill: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
}

.page-faq .faq-flow .flow-sub {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
}

/* ---------- 奶油纸联系卡 ---------- */
.page-faq .faq-paper {
  display: grid;
  gap: 16px;
  padding: clamp(20px, 3.2vw, 34px);
  background: var(--paper);
  color: var(--faq-paper-ink);
  border: 1px solid var(--brick-deep);
  border-left: 4px solid var(--brick);
}

.page-faq .faq-paper__eyebrow {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--brick);
}

.page-faq .faq-paper h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(19px, 2.5vw, 25px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--faq-paper-ink);
}

.page-faq .faq-paper > p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-paper-text);
}

.page-faq .faq-paper__list,
.page-faq .faq-paper__channels {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-faq .faq-paper__list li,
.page-faq .faq-paper__channels li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding-top: 10px;
  border-top: 1px solid var(--faq-paper-rule);
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-paper-text);
}

.page-faq .faq-paper__k {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--brick-deep);
  white-space: nowrap;
}

.page-faq .faq-paper__v {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--faq-paper-ink);
  word-break: break-word;
}

.page-faq .faq-paper .btn-row {
  margin-top: 4px;
}

.page-faq .faq-paper .btn {
  border-color: var(--faq-paper-ink);
  color: var(--faq-paper-ink);
  background: transparent;
}

.page-faq .faq-paper .btn--solid {
  background: var(--faq-paper-ink);
  color: var(--paper);
  border-color: var(--faq-paper-ink);
}

.page-faq .faq-paper .btn:hover,
.page-faq .faq-paper .btn:focus-visible {
  background: var(--brick-deep);
  border-color: var(--brick-deep);
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-card__summary {
    padding: 16px 20px;
  }

  .page-faq .faq-card__body {
    padding: 0 20px 22px;
  }

  .page-faq .faq-card__title {
    font-size: 16px;
  }

  .page-faq .faq-paper__list li,
  .page-faq .faq-paper__channels li {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 0 14px;
    align-items: baseline;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-board__inner {
    grid-template-columns: 186px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: 26px;
    align-self: start;
  }

  .page-faq .faq-rail__title {
    margin: 0 0 14px;
    font-family: var(--font-serif);
    font-size: 12px;
    letter-spacing: .16em;
    color: var(--muted);
  }

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

  .page-faq .faq-rail__list::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 12px;
    bottom: 12px;
    width: 1px;
    background: var(--grid-line-strong);
  }

  .page-faq .faq-rail__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 7px 0;
    font-size: 13px;
    line-height: 1.45;
    color: var(--muted);
    text-decoration: none;
    transition: color var(--dur) var(--ease);
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: relative;
    z-index: 1;
    flex: 0 0 13px;
    height: 13px;
    background: var(--brick);
    transition: background var(--dur) var(--ease);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    color: var(--text);
  }

  .page-faq .faq-rail__link:hover::before,
  .page-faq .faq-rail__link:focus-visible::before {
    background: var(--cyan);
  }

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

  .page-faq .faq-rail__no {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--grid);
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-group__body--split {
    grid-template-columns: minmax(0, 1fr) 286px;
    align-items: start;
  }

  .page-faq .faq-hero__inner {
    max-width: 980px;
  }
}
</PAGE_CSS>>>