.page-faq {
  --faq-block-gap: clamp(44px, 6.5vw, 84px);
  --faq-panel-line: rgba(0, 168, 107, .38);
  padding-bottom: clamp(56px, 9vw, 110px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(18px, 3vw, 38px);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(14px, 2.4vw, 24px);
}

.page-faq .faq-frame {
  position: relative;
  padding: clamp(26px, 4.6vw, 58px) clamp(20px, 4.2vw, 54px);
  background: var(--paper);
}

.page-faq .faq-frame .eyebrow {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .22em;
  color: var(--pass);
  font-family: var(--font-num);
  text-transform: uppercase;
}

.page-faq .faq-frame h1 {
  font-family: var(--font-head);
  font-size: clamp(29px, 5vw, 54px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 12px 0 0;
  max-width: 18em;
}

.page-faq .faq-frame .lead {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 640px;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--gray);
}

.page-faq .faq-frame .frame-meta {
  margin-top: clamp(18px, 2.6vw, 28px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-shell {
  margin-top: clamp(34px, 5.5vw, 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
}

@media (min-width: 920px) {
  .page-faq .faq-shell {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-toc {
  border: 1px solid var(--line-strong);
  background: var(--paper);
  padding: 18px 14px 20px;
  box-shadow: 4px 4px 0 var(--arch);
}

.page-faq .faq-toc .toc-title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gray);
  font-family: var(--font-num);
}

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

.page-faq .faq-toc .toc-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  color: var(--ink);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.4;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.page-faq .faq-toc .toc-link .num {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--silver);
  flex: none;
}

.page-faq .faq-toc .toc-link:hover,
.page-faq .faq-toc .toc-link.is-on {
  background: var(--mist);
  border-left-color: var(--pass);
  color: var(--deep);
}

.page-faq .faq-toc .toc-link:hover .num,
.page-faq .faq-toc .toc-link.is-on .num {
  color: var(--deep);
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-block + .faq-block {
  margin-top: var(--faq-block-gap);
}

.page-faq .faq-block-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.2vw, 26px);
  align-items: start;
  padding-bottom: clamp(12px, 1.6vw, 18px);
  border-bottom: 2px solid var(--ink);
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-num {
  font-family: var(--font-num);
  font-size: clamp(34px, 5vw, 56px);
  line-height: .84;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--pass);
  flex: none;
}

.page-faq .faq-block-head h2 {
  font-family: var(--font-head);
  font-size: clamp(21px, 2.7vw, 31px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0;
}

.page-faq .faq-block-head p {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray);
  max-width: 54em;
}

/* ---------- 三步定位 ---------- */
.page-faq .route-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

@media (min-width: 720px) {
  .page-faq .route-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .route-steps > li:nth-child(2) {
    margin-top: 18px;
  }

  .page-faq .route-steps > li:nth-child(3) {
    margin-top: 36px;
  }
}

.page-faq .route-step {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 22px 20px 24px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-card);
}

.page-faq .route-step-num {
  align-self: flex-start;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .16em;
  padding: 3px 9px;
  background: var(--ink);
  color: var(--paper);
}

.page-faq .route-step:nth-child(2) .route-step-num {
  background: var(--amber);
  color: var(--ink);
}

.page-faq .route-step h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.01em;
}

.page-faq .route-step p {
  margin: 0;
  flex: 1;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .route-link {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 600;
  color: var(--deep);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--pass);
}

.page-faq .route-link:hover {
  color: var(--ink);
  border-bottom-color: var(--amber);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-faq .faq-figure--install {
  max-width: 700px;
}

.page-faq .faq-figure .figure-media {
  border: 1px solid var(--line-strong);
  background: var(--mist);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

.page-faq .faq-figure .figure-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-accordion {
  border-top: 1px solid var(--line);
}

.page-faq .faq-accordion .accordion-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-accordion .faq-q {
  margin: 0;
}

.page-faq .faq-accordion .accordion-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 14px;
  padding: 16px 6px;
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  transition: background .16s ease;
}

.page-faq .faq-accordion .accordion-trigger:hover {
  background: rgba(0, 168, 107, .06);
}

.page-faq .faq-accordion .accordion-trigger:focus-visible {
  outline: 2px solid var(--pass);
  outline-offset: 2px;
}

.page-faq .faq-accordion .accordion-trigger .num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--pass);
  padding-top: 3px;
}

.page-faq .faq-accordion .faq-q-text {
  font-family: var(--font-head);
  font-size: clamp(15.5px, 1.7vw, 17.5px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .faq-accordion .accordion-trigger::after {
  content: "＋";
  font-family: var(--font-num);
  font-size: 15px;
  line-height: 1;
  color: var(--pass);
  align-self: center;
}

.page-faq .faq-accordion .accordion-trigger[aria-expanded="true"]::after {
  content: "－";
  color: var(--gray);
}

.page-faq .faq-accordion .accordion-panel {
  padding: 2px 6px 20px;
}

.page-faq .faq-accordion .accordion-body {
  max-width: 68ch;
  border-left: 3px solid var(--faq-panel-line);
  padding: 2px 0 2px 16px;
}

.page-faq .faq-accordion .accordion-body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray);
}

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

.page-faq .faq-accordion .accordion-body a {
  color: var(--deep);
  text-decoration: underline;
  text-decoration-color: var(--pass);
  text-underline-offset: 3px;
}

.page-faq .faq-accordion .accordion-body a:hover {
  color: var(--ink);
  text-decoration-color: var(--amber);
}

.page-faq .faq-accordion .accordion-body .tag {
  margin-left: 6px;
  vertical-align: 1px;
}

/* ---------- 联系客服 ---------- */
.page-faq .contact-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-bottom: clamp(24px, 3.5vw, 38px);
}

@media (min-width: 660px) {
  .page-faq .contact-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .contact-cards > :nth-child(2) {
    margin-top: 12px;
  }
}

.page-faq .contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: 4px 4px 0 var(--arch);
}

.page-faq .contact-card--mail {
  background: var(--mist);
}

.page-faq .contact-label {
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray);
  font-family: var(--font-num);
}

.page-faq .contact-value {
  font-family: var(--font-num);
  font-size: clamp(14px, 1.6vw, 16px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
  text-decoration: none;
  word-break: break-word;
}

.page-faq .contact-value--plain {
  font-family: var(--font-body);
  font-weight: 600;
}

.page-faq a.contact-value:hover {
  color: var(--deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--pass);
}

.page-faq .contact-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .contact-card .copy-btn {
  align-self: flex-start;
}

.page-faq .faq-accordion--contact {
  border-top: 1px solid var(--line);
}

/* ---------- 窄屏收尾 ---------- */
@media (max-width: 520px) {
  .page-faq .faq-frame h1 {
    font-size: 27px;
  }

  .page-faq .faq-block-head {
    gap: 12px;
  }

  .page-faq .faq-accordion .accordion-trigger {
    gap: 10px;
    padding: 14px 2px;
  }

  .page-faq .faq-accordion .accordion-panel {
    padding: 2px 2px 18px;
  }

  .page-faq .faq-accordion .accordion-body {
    padding-left: 12px;
  }

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

  .page-faq .faq-toc .toc-link {
    font-size: 13.5px;
    padding: 8px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: .001ms !important;
  }
}