/* ===== 答疑中心（page-faq） ===== */
.page-faq {
  --faq-rule: rgba(192, 132, 71, 0.38);
  --faq-block: clamp(2.25rem, 6vw, 3.75rem);
  background:
    radial-gradient(1100px 520px at 84% -6%, rgba(56, 225, 208, 0.09), transparent 62%),
    radial-gradient(900px 460px at -12% 44%, rgba(192, 132, 71, 0.08), transparent 58%),
    var(--c-deep);
  color: var(--c-paper);
  font-family: var(--font-sans);
  padding: clamp(1.25rem, 3.5vw, 2.5rem) 0 clamp(3.5rem, 9vw, 6.5rem);
  overflow-x: clip;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(1.5rem, 4vw, 2.25rem);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-steel);
}

.page-faq .breadcrumb a {
  color: var(--c-cyan);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.25rem);
  padding-bottom: clamp(2rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-intro__eyebrow {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.26em;
  color: var(--c-wood);
}

.page-faq .faq-intro h1 {
  margin: 0 0 1.1rem;
  max-width: 22em;
  font-size: clamp(1.8rem, 5.2vw, 3rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.page-faq .faq-intro__lede {
  margin: 0;
  max-width: 44em;
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.85;
  color: rgba(245, 242, 234, 0.82);
}

.page-faq .faq-pulse {
  padding: 1.2rem 1.35rem 1.3rem;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(56, 225, 208, 0.1), rgba(5, 13, 24, 0.35));
}

.page-faq .faq-pulse__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.9rem, 9vw, 4.25rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--c-cyan);
}

.page-faq .faq-pulse__unit {
  margin-left: 0.22em;
  font-size: 0.36em;
  font-weight: 700;
  letter-spacing: 0;
}

.page-faq .faq-pulse__text {
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--c-steel);
}

@media (min-width: 880px) {
  .page-faq .faq-intro {
    grid-template-columns: minmax(0, 1fr) 262px;
    align-items: center;
  }

  .page-faq .faq-intro__head {
    grid-column: 1;
  }

  .page-faq .faq-pulse {
    grid-column: 2;
  }
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3rem);
  padding-top: clamp(2rem, 5vw, 3.25rem);
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 3.75rem);
    align-items: start;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 8rem;
  }
}

/* ---------- 问题索引栏 ---------- */
.page-faq .faq-index {
  border-top: 2px solid var(--c-wood);
  padding-top: 0.95rem;
}

.page-faq .faq-index__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  color: var(--c-wood);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0 0 0.7rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  font-size: 0.82rem;
  line-height: 1.3;
  color: rgba(245, 242, 234, 0.78);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 160ms ease, color 160ms ease, background-color 160ms ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  background: rgba(56, 225, 208, 0.08);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.page-faq .faq-index__cta {
  display: block;
  margin-top: 0.9rem;
  text-align: center;
}

@media (min-width: 960px) {
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0.1rem;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    width: 100%;
    padding: 0.55rem 0.4rem 0.55rem 0.7rem;
    border-color: transparent;
    border-left: 2px solid transparent;
    border-radius: 0;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-color: transparent;
    border-left-color: var(--c-cyan);
    background: rgba(56, 225, 208, 0.06);
  }
}

/* ---------- 内容区 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(2.5rem, 6vw, 3.5rem);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 7.5rem;
  min-width: 0;
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 2.85rem;
  margin-bottom: clamp(1.1rem, 2.6vw, 1.6rem);
}

.page-faq .faq-group__plate {
  position: absolute;
  left: 0;
  top: 0.2rem;
  padding: 0.2rem 0.42rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  background: rgba(56, 225, 208, 0.06);
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.page-faq .faq-group[data-chapter].is-active .faq-group__plate {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-night);
}

.page-faq .faq-group__title {
  margin: 0 0 0.6rem;
  font-size: clamp(1.24rem, 3.1vw, 1.68rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 40em;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--c-steel);
}

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

.page-faq .faq-list--after-steps {
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

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

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  padding: 1.05rem 2.3rem 1.05rem 0;
  font-size: clamp(0.95rem, 1.7vw, 1.05rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-paper);
  cursor: pointer;
  list-style: none;
  transition: color 160ms ease;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 0.15rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-wood);
  transition: color 180ms ease, transform 180ms ease;
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "\2212";
  color: var(--c-orange);
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--c-cyan);
}

.page-faq .faq-item__a {
  max-width: 720px;
  padding: 0.15rem 0 1.35rem;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.78;
  color: rgba(245, 242, 234, 0.8);
}

.page-faq .faq-item__a p + p {
  margin-top: 0.7rem;
}

/* ---------- 排查步骤条 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 0;
  margin: 0 0 0.5rem;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.95rem;
  padding-bottom: 1.2rem;
}

.page-faq .faq-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 0.97rem;
  top: 2.15rem;
  bottom: 0.1rem;
  width: 2px;
  background: var(--line-wood);
}

.page-faq .faq-step__num {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--line-wood);
  border-radius: 50%;
  background: var(--c-deep);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--c-wood-soft);
}

.page-faq .faq-step__body {
  min-width: 0;
  padding-top: 0.15rem;
}

.page-faq .faq-step__title {
  margin: 0 0 0.4rem;
  max-width: 32em;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-paper);
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 34em;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(245, 242, 234, 0.72);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: clamp(1.5rem, 3.5vw, 2.25rem) 0 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--c-night);
}

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

.page-faq .faq-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2rem 1rem 0.75rem;
  font-size: 0.76rem;
  line-height: 1.6;
  color: rgba(245, 242, 234, 0.76);
  background: linear-gradient(to top, rgba(5, 13, 24, 0.94), rgba(5, 13, 24, 0));
}

@media (min-width: 860px) {
  .page-faq .faq-figure figcaption {
    padding: 2.4rem 1.35rem 0.95rem;
    font-size: 0.8rem;
  }
}

/* ---------- 呼吸圈分隔 ---------- */
.page-faq .faq-breath {
  display: grid;
  place-items: center;
  height: 2.4rem;
}

.page-faq .faq-breath__ring {
  grid-area: 1 / 1;
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid var(--line-cyan);
  border-radius: 50%;
}

.page-faq .faq-breath__ring--inner {
  width: 1rem;
  height: 1rem;
  border-color: rgba(192, 132, 71, 0.6);
  animation: faq-breathe 4s ease-in-out infinite;
}

@keyframes faq-breathe {
  0%,
  100% {
    transform: scale(0.88);
    opacity: 0.65;
  }
  50% {
    transform: scale(1.18);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-breath__ring--inner {
    animation: none;
  }
}

/* ---------- 分流卡片 ---------- */
.page-faq .faq-routes {
  display: grid;
  gap: 0.85rem;
}

.page-faq .faq-route {
  padding: clamp(1.05rem, 2.6vw, 1.5rem);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--c-wood);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(235, 211, 172, 0.05), rgba(5, 13, 24, 0.25));
}

.page-faq .faq-route__title {
  margin: 0 0 0.55rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-cyan);
}

.page-faq .faq-route__text {
  margin: 0;
  max-width: 40em;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(245, 242, 234, 0.78);
}

.page-faq .faq-route__meta {
  margin: 1rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--hair-strong);
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-route__row {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
}

.page-faq .faq-route__row dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-steel);
}

.page-faq .faq-route__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.25rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-faq .faq-help__note {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--c-steel);
}

@media (min-width: 760px) {
  .page-faq .faq-routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-route:first-child {
    grid-column: 1 / -1;
  }
}