.page-faq {
  --faq-gap: clamp(1rem, 2.4vw, 1.8rem);
  --faq-line: 1px solid var(--ink-line);
  display: block;
  color: var(--text);
  overflow-wrap: break-word;
}

.page-faq .breadcrumb {
  padding-block: 1.1rem .2rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--faq-gap);
  padding-block: 1rem 2rem;
  align-items: center;
}

.page-faq .faq-hero-copy {
  display: grid;
  gap: .9rem;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 7.2vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -.01em;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 46ch;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: .3rem;
}

.page-faq .faq-hero-figure {
  margin: 0;
  min-width: 0;
}

/* ---------- 路线索引 ---------- */
.page-faq .faq-index {
  padding-block: clamp(1.6rem, 3vw, 2.6rem);
  border-top: var(--faq-line);
}

.page-faq .faq-index-head {
  display: grid;
  gap: .55rem;
  max-width: 60ch;
}

.page-faq .faq-index-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.2;
}

.page-faq .faq-index-lead {
  margin: 0;
  color: var(--text-dim);
  font-size: .95rem;
  line-height: 1.8;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-index-item > a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: .2rem .8rem;
  padding: .9rem 1rem;
  background: var(--ink-panel);
  border: var(--faq-line);
  box-shadow: inset 3px 0 0 var(--idx-tone, var(--ink-line));
  color: var(--text);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index-item[data-tone="signal"] > a { --idx-tone: var(--signal); }
.page-faq .faq-index-item[data-tone="celadon"] > a { --idx-tone: var(--celadon); }
.page-faq .faq-index-item[data-tone="electric"] > a { --idx-tone: var(--electric); }
.page-faq .faq-index-item[data-tone="silver"] > a { --idx-tone: var(--silver); }
.page-faq .faq-index-item[data-tone="violet"] > a { --idx-tone: var(--violet); }

.page-faq .faq-index-item > a:hover {
  transform: translateY(-1px);
  border-color: var(--idx-tone, var(--electric));
  background: var(--ink);
}

.page-faq .faq-index-item > a:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: 2px;
}

.page-faq .faq-index-idx {
  font-size: .78rem;
  line-height: 1.5;
  color: var(--idx-tone, var(--electric));
}

.page-faq .faq-index-text {
  display: grid;
  gap: .18rem;
  min-width: 0;
}

.page-faq .faq-index-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.35;
}

.page-faq .faq-index-note {
  color: var(--text-dim);
  font-size: .82rem;
  line-height: 1.6;
}

.page-faq .faq-index-arrow {
  font-family: var(--font-mono);
  font-size: .95rem;
  line-height: 1.4;
  color: var(--idx-tone, var(--electric));
}

/* ---------- 费用专题 ---------- */
.page-faq .faq-topic {
  scroll-margin-top: 4.5rem;
  padding-block: clamp(2rem, 4vw, 3.2rem);
  border-block: var(--faq-line);
  background:
    linear-gradient(180deg, rgba(18, 42, 63, .92), rgba(11, 27, 43, .96)),
    repeating-linear-gradient(90deg, rgba(46, 217, 208, .06) 0 1px, transparent 1px 82px);
}

.page-faq .faq-topic-head {
  display: grid;
  gap: .6rem;
  max-width: 62ch;
  margin-bottom: 1.4rem;
}

.page-faq .faq-topic-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  line-height: 1.22;
}

.page-faq .faq-topic-lead {
  margin: 0;
  color: var(--text-dim);
  font-size: .95rem;
  line-height: 1.8;
}

.page-faq .faq-topic-list {
  list-style: none;
  counter-reset: feeq;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-topic-item {
  counter-increment: feeq;
  position: relative;
  padding: 1rem 1.05rem 1rem 2.85rem;
  background: var(--ink);
  border: var(--faq-line);
}

.page-faq .faq-topic-item::before {
  content: counter(feeq, decimal-leading-zero);
  position: absolute;
  top: 1.08rem;
  left: 1rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  line-height: 1.4;
  color: var(--signal);
}

.page-faq .faq-topic-item:nth-child(4n+2)::before { color: var(--celadon); }
.page-faq .faq-topic-item:nth-child(4n+3)::before { color: var(--electric); }
.page-faq .faq-topic-item:nth-child(4n+4)::before { color: var(--silver); }

.page-faq .faq-topic-item h3 {
  margin: 0 0 .4rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.45;
}

.page-faq .faq-topic-item p {
  margin: 0;
  color: var(--text-dim);
  font-size: .92rem;
  line-height: 1.78;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-groups {
  padding-block: clamp(1.2rem, 2.4vw, 2rem) clamp(1.6rem, 3vw, 2.4rem);
}

.page-faq .faq-group {
  display: grid;
  gap: .9rem;
  padding-block: clamp(1.4rem, 2.6vw, 2rem);
  border-bottom: var(--faq-line);
  scroll-margin-top: 4.5rem;
}

.page-faq .faq-group-head {
  display: grid;
  gap: .3rem;
  align-content: start;
}

.page-faq .faq-group-idx {
  font-size: .76rem;
  line-height: 1.4;
  color: var(--electric);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.3rem;
  line-height: 1.3;
}

.page-faq .faq-group-note {
  margin: 0;
  color: var(--text-dim);
  font-size: .8rem;
  line-height: 1.6;
}

.page-faq .faq-group-body {
  display: grid;
  gap: .5rem;
  min-width: 0;
}

.page-faq .qa {
  border: var(--faq-line);
  background: var(--ink-panel);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--electric);
  background: var(--ink);
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: .2rem .7rem;
  padding: .85rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: -2px;
}

.page-faq .qa-num {
  font-size: .74rem;
  line-height: 1.6;
  color: var(--electric);
}

.page-faq .qa-q {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .96rem;
  line-height: 1.55;
}

.page-faq .qa summary::after {
  content: "+";
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--electric);
}

.page-faq .qa[open] summary::after { content: "−"; }

.page-faq .qa-a {
  padding: 0 1rem .95rem 2.55rem;
  border-top: 1px dashed rgba(60, 98, 128, .55);
  margin-top: .1rem;
  padding-top: .75rem;
}

.page-faq .qa-a p {
  margin: 0;
  color: var(--text-dim);
  font-size: .9rem;
  line-height: 1.8;
}

/* ---------- 色标与收藏 ---------- */
.page-faq .faq-legend-block {
  padding-block: clamp(1.6rem, 3vw, 2.6rem);
}

.page-faq .faq-legend-panel {
  color: var(--on-light);
}

.page-faq .faq-legend-grid {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2.2rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-legend-copy {
  display: grid;
  gap: .7rem;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-legend-copy h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.25;
  color: var(--on-light);
}

.page-faq .faq-legend-lead {
  margin: 0;
  color: var(--ink-line);
  font-size: .93rem;
  line-height: 1.8;
}

.page-faq .faq-legend-list {
  display: grid;
  gap: .5rem;
  margin-top: .3rem;
}

.page-faq .faq-legend-list .legend-item {
  color: var(--on-light);
  font-size: .88rem;
  line-height: 1.6;
}

.page-faq .faq-collect {
  display: grid;
  gap: .8rem;
  align-content: start;
  padding-top: .4rem;
  border-top: 2px solid var(--on-light);
  min-width: 0;
}

.page-faq .faq-collect h3 {
  margin: .2rem 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.08rem;
  line-height: 1.45;
  color: var(--on-light);
}

.page-faq .faq-collect-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-faq .faq-collect-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .6rem;
  align-items: start;
  color: var(--on-light);
  font-size: .9rem;
  line-height: 1.7;
}

.page-faq .faq-collect-num {
  font-size: .74rem;
  line-height: 1.9;
  color: var(--signal);
}

.page-faq .faq-collect-steps li:nth-child(2) .faq-collect-num { color: var(--celadon); }
.page-faq .faq-collect-steps li:nth-child(3) .faq-collect-num { color: var(--violet); }

.page-faq .faq-legend-figure {
  margin: .4rem 0 0;
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  padding-block: clamp(1.6rem, 3vw, 2.6rem) clamp(2.4rem, 4vw, 3.4rem);
}

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

.page-faq .faq-contact-card {
  display: grid;
  gap: .8rem;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-contact-card h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.28;
}

.page-faq .faq-contact-lead {
  margin: 0;
  color: var(--text-dim);
  font-size: .93rem;
  line-height: 1.8;
  max-width: 44ch;
}

.page-faq .faq-contact-card .contact-list {
  margin: .3rem 0 0;
  display: grid;
  gap: .15rem .9rem;
}

.page-faq .faq-contact-card .contact-key {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--silver);
}

.page-faq .faq-contact-card .contact-val {
  margin: 0 0 .55rem;
  font-size: .94rem;
  line-height: 1.6;
}

.page-faq .faq-contact-card .contact-val a {
  color: var(--electric);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact-card .contact-val a:hover {
  color: var(--paper);
}

.page-faq .faq-contact-side {
  display: grid;
  gap: .7rem;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-contact-side h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.06rem;
  line-height: 1.45;
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-faq .faq-contact-list li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--text-dim);
  font-size: .9rem;
  line-height: 1.7;
}

.page-faq .faq-contact-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--celadon);
}

.page-faq .faq-contact-hint {
  margin: 0;
  color: var(--text-dim);
  font-size: .86rem;
  line-height: 1.7;
}

.page-faq .faq-contact-side .btn {
  justify-self: start;
  margin-top: .3rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-topic-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .9rem 1.1rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    gap: clamp(1.6rem, 3vw, 2.8rem);
    padding-block: 1.4rem 3rem;
  }

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

  .page-faq .faq-group {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(1.2rem, 3vw, 2.4rem);
    align-items: start;
  }

  .page-faq .faq-group-head {
    position: sticky;
    top: 4.8rem;
    padding-top: .2rem;
    border-top: 2px solid var(--ink-line);
  }

  .page-faq .faq-legend-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  }

  .page-faq .faq-topic-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem 1.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
    animation: none !important;
  }

  .page-faq .faq-index-item > a:hover {
    transform: none;
  }
}