/* ===== 问答中心 · 页面专属样式 ===== */
.page-faq {
  --faq-hair: rgba(201, 162, 39, 0.42);
  --faq-hair-soft: rgba(31, 58, 50, 0.14);
  --faq-wash: rgba(255, 253, 248, 0.72);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

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

.page-faq .faq-section {
  padding: 1.25rem 0;
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-section:last-of-type {
  padding-bottom: 4.5rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 2.25rem 0 2rem;
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(201, 162, 39, 0.16), transparent 62%),
    radial-gradient(90% 80% at 0% 100%, rgba(168, 50, 42, 0.07), transparent 70%),
    var(--paper);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.2em;
  color: var(--red);
}

.page-faq h1 {
  margin: 0 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-1);
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--green-deep);
  max-width: 16em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-4);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-hero__aside {
  padding-top: 1.15rem;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-hero__meta {
  margin: 0 0 0.9rem;
  font-size: var(--fs-6);
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.18em;
  color: var(--green-mid);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.page-faq .faq-index a {
  display: grid;
  grid-template-columns: 1.85rem minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-block);
  text-decoration: none;
  color: var(--green-deep);
  font-size: var(--fs-5);
  line-height: 1.5;
  transition: background-color 160ms ease, color 160ms ease;
}

.page-faq .faq-index a .mono {
  font-size: var(--fs-6);
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  background: var(--canvas);
  color: var(--red);
}

/* ---------- 画板 ---------- */
.page-faq .faq-board {
  background: var(--canvas);
  border-radius: var(--radius-panel);
  padding: 1.75rem 1.15rem;
  box-shadow: 0 20px 50px -46px rgba(31, 58, 50, 0.55);
}

.page-faq .faq-board--sand {
  background: var(--sand);
  box-shadow: none;
}

.page-faq .section-head {
  margin-bottom: 1.5rem;
}

.page-faq .section-head__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.2em;
  color: var(--red);
}

.page-faq .section-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--green-deep);
  line-height: 1.25;
}

.page-faq .section-head__note {
  max-width: 40em;
  line-height: 1.8;
  color: var(--green-mid);
}

/* ---------- 售后四档阶梯 ---------- */
.page-faq .tier-stairs {
  display: grid;
  gap: 0.9rem;
  margin-bottom: 1.75rem;
}

.page-faq .tier-card {
  display: flex;
  flex-direction: column;
  padding: 1.35rem 1.2rem;
  border: 1px solid var(--faq-hair-soft);
  border-radius: var(--radius-block);
  background: var(--canvas);
  transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.page-faq .tier-card:hover,
.page-faq .tier-card:focus-within {
  border-color: var(--red-light);
  background: var(--paper);
  box-shadow: 0 16px 34px -30px rgba(110, 31, 25, 0.75);
}

.page-faq .tier-card__no {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .tier-card__name {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-3);
  line-height: 1.3;
  color: var(--green-deep);
}

.page-faq .tier-card__resp {
  margin: 0 0 0.9rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--faq-hair);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--fs-5);
  color: var(--red);
  font-variant-numeric: tabular-nums;
}

.page-faq .tier-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
  font-size: var(--fs-6);
  line-height: 1.75;
  color: var(--green-mid);
}

.page-faq .tier-card__list li {
  position: relative;
  padding-left: 0.95rem;
}

.page-faq .tier-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--red-light);
}

.page-faq .tier-card__more {
  margin: auto 0 0;
  padding-top: 0.9rem;
  font-size: var(--fs-6);
  line-height: 1.7;
  color: var(--green-mid);
  opacity: 0.6;
  transition: opacity 160ms ease, color 160ms ease;
}

.page-faq .tier-card:hover .tier-card__more,
.page-faq .tier-card:focus-within .tier-card__more {
  opacity: 1;
  color: var(--green-deep);
}

.page-faq .faq-figure {
  margin-top: 1.5rem;
}

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

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

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr) 1.4rem;
  gap: 0.4rem;
  align-items: baseline;
  padding: 1.05rem 0.25rem;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-block);
  transition: background-color 160ms ease;
}

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

.page-faq .faq-item__summary:hover,
.page-faq .faq-item__summary:focus-visible {
  background: var(--faq-wash);
}

.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.08em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-4);
  line-height: 1.55;
  color: var(--green-deep);
}

.page-faq .faq-item__mark {
  text-align: right;
  line-height: 1.55;
  font-size: var(--fs-6);
  color: var(--red);
  transition: transform 180ms ease;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(90deg);
}

.page-faq .faq-item__body {
  padding: 0 0.25rem 1.35rem 2.8rem;
  font-size: var(--fs-5);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-item__body p {
  margin: 0 0 0.7rem;
}

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

/* ---------- 双路径流程图 ---------- */
.page-faq .faq-flow {
  margin-bottom: 1.75rem;
  padding: 1.25rem 1.05rem 0.75rem;
  background: var(--paper);
  border-radius: var(--radius-block);
}

.page-faq .faq-flow__legend {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: var(--fs-6);
  line-height: 1.6;
}

.page-faq .faq-flow__legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.page-faq .faq-flow__legend li::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.page-faq .faq-flow__legend li:first-child {
  color: var(--red);
}

.page-faq .faq-flow__legend li:last-child {
  color: var(--blue);
}

.page-faq .faq-flow__scroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0.6rem;
}

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

.page-faq .flow-rail {
  stroke-width: 2.5;
  fill: none;
}

.page-faq .flow-rail--direct {
  stroke: var(--red-light);
}

.page-faq .flow-rail--custom {
  stroke: var(--blue);
  stroke-dasharray: 7 7;
}

.page-faq .flow-dot--direct {
  fill: var(--red);
}

.page-faq .flow-dot--custom {
  fill: var(--blue);
}

.page-faq .flow-label {
  font-family: var(--font-body);
  font-size: 18px;
  fill: var(--green-deep);
}

/* ---------- 准备清单深色画板 ---------- */
.page-faq .faq-board--deep {
  background: var(--red-deep);
  color: var(--paper);
  box-shadow: none;
}

.page-faq .faq-board__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-board__title {
  margin: 0.65rem 0 1.6rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-2);
  line-height: 1.3;
  color: var(--canvas);
  max-width: 18em;
}

.page-faq .faq-checklist {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.page-faq .faq-checklist__item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid rgba(201, 162, 39, 0.42);
  border-radius: var(--radius-block);
}

.page-faq .faq-checklist__item .mono {
  font-size: var(--fs-6);
  line-height: 1.9;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-faq .faq-checklist__item p {
  margin: 0;
  font-size: var(--fs-5);
  line-height: 1.75;
  color: rgba(246, 241, 231, 0.88);
}

.page-faq .faq-board__foot {
  margin: 0 0 1.6rem;
  max-width: 44em;
  font-size: var(--fs-5);
  line-height: 1.85;
  color: rgba(246, 241, 231, 0.78);
}

.page-faq .faq-board__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-faq .faq-board__ghost {
  border-color: rgba(246, 241, 231, 0.45);
  color: var(--paper);
}

.page-faq .faq-board__ghost:hover,
.page-faq .faq-board__ghost:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-board {
    padding: 2.5rem 2rem;
  }

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

  .page-faq .faq-item__summary {
    grid-template-columns: 2.9rem minmax(0, 1fr) 1.6rem;
    padding: 1.2rem 0.5rem;
  }

  .page-faq .faq-item__body {
    padding-left: 3.4rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 3rem 0 2.75rem;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 3.5rem;
    align-items: end;
    margin-top: 2rem;
  }

  .page-faq .faq-board {
    padding: 3.25rem 2.75rem;
  }

  .page-faq .faq-section {
    padding: 1.75rem 0;
  }

  .page-faq .section-head {
    margin-bottom: 2rem;
  }

  .page-faq .tier-stairs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    align-items: end;
    margin-bottom: 2.25rem;
  }

  .page-faq .tier-card:nth-child(1) {
    min-height: 13rem;
  }

  .page-faq .tier-card:nth-child(2) {
    min-height: 15.5rem;
  }

  .page-faq .tier-card:nth-child(3) {
    min-height: 18rem;
  }

  .page-faq .tier-card:nth-child(4) {
    min-height: 20.5rem;
  }

  .page-faq .faq-flow {
    padding: 1.75rem 1.75rem 1rem;
  }

  .page-faq .faq-figure {
    margin-top: 2rem;
  }
}