.page-faq {
  --faq-rail-w: 208px;
  --faq-ink-soft: #2a3040;
  --faq-glow-line: rgba(245, 184, 75, .24);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-faq .breadcrumbs {
  padding: 1rem 1.25rem 0;
  max-width: var(--wrap);
  margin-inline: auto;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 2.4rem 1.25rem 3.2rem;
  background: linear-gradient(158deg, var(--ink) 0%, var(--indigo) 58%, #1d2c50 100%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -22%;
  bottom: -34%;
  width: 340px;
  height: 340px;
  border-radius: 46% 54% 58% 42% / 52% 44% 56% 48%;
  background: radial-gradient(circle at 42% 40%, rgba(245, 184, 75, .34), rgba(245, 184, 75, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -14%;
  top: -18%;
  width: 220px;
  height: 220px;
  border-radius: 52% 48% 44% 56% / 46% 56% 44% 54%;
  background: radial-gradient(circle at 55% 55%, rgba(53, 214, 200, .18), rgba(53, 214, 200, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.05rem, 8.4vw, 3.8rem);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--glow);
  margin: .7rem 0 0;
  text-wrap: balance;
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--lamp);
  text-shadow: 0 0 26px rgba(245, 184, 75, .42);
}

.page-faq .faq-hero .lede {
  margin: 1.1rem 0 0;
  max-width: 34em;
  color: rgba(246, 235, 220, .82);
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--faq-glow-line);
  box-shadow: 0 28px 62px -34px rgba(0, 0, 0, .95);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero__media .media__caption {
  padding: .8rem 1.1rem;
  background: rgba(11, 18, 32, .72);
  color: rgba(168, 176, 189, .9);
  font-size: .82rem;
  margin: 0;
}

/* ---------- 问答区 ---------- */

.page-faq .faq-body {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 2.6rem 1.25rem 1rem;
  display: grid;
  gap: 1.8rem;
}

.page-faq .faq-rail {
  display: grid;
  gap: .8rem;
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0;
  font-family: var(--font-num);
  font-size: .76rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: .55rem;
  margin: 0;
  padding: 0 0 .5rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  white-space: nowrap;
  padding: .5rem .95rem;
  border-radius: 999px;
  border: 1px solid rgba(168, 176, 189, .3);
  color: rgba(246, 235, 220, .88);
  font-size: .88rem;
  text-decoration: none;
  transition: border-color .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--lamp);
  color: var(--glow);
  background: rgba(245, 184, 75, .12);
}

.page-faq .faq-rail__index {
  font-family: var(--font-num);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--lamp);
}

.page-faq .faq-stream {
  display: grid;
  gap: 2.6rem;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 6.5rem;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: .85rem;
  margin-bottom: 1.1rem;
  padding-bottom: .9rem;
  border-bottom: 1px solid rgba(168, 176, 189, .22);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lamp);
  color: var(--ink);
  font-family: var(--font-num);
  font-size: 1.05rem;
  letter-spacing: .04em;
  box-shadow: var(--lamp-shadow);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.32rem, 4.8vw, 1.85rem);
  line-height: 1.28;
  color: var(--glow);
  letter-spacing: .01em;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
  counter-reset: faqq;
}

.page-faq .faq-item {
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--text-dark);
  border: 1px solid rgba(11, 18, 32, .1);
  overflow: hidden;
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}

.page-faq .faq-item:hover {
  box-shadow: 0 16px 36px -24px rgba(11, 18, 32, .9);
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, #fffaf0 0%, var(--paper) 100%);
  box-shadow: 0 22px 44px -28px rgba(11, 18, 32, .95), inset 3px 0 0 var(--lamp);
}

.page-faq .faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: 1rem 1.1rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text-dark);
}

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

.page-faq .faq-item summary::before {
  counter-increment: faqq;
  content: counter(faqq, decimal-leading-zero);
  flex: 0 0 auto;
  padding-top: .28rem;
  font-family: var(--font-num);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--lamp);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 1.35rem;
  line-height: 1;
  padding-top: .1rem;
  color: var(--lamp);
  transition: transform .3s var(--ease), color .3s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--brick);
}

.page-faq .faq-item summary:hover {
  background: rgba(245, 184, 75, .1);
}

.page-faq .faq-item__body {
  padding: 0 1.1rem 1.15rem 2.65rem;
  color: var(--faq-ink-soft);
  font-size: .95rem;
  line-height: 1.85;
}

.page-faq .faq-item__body p {
  margin: 0 0 .65rem;
}

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

.page-faq .faq-item__body a {
  color: #8a3d29;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__body a:hover {
  color: var(--brick);
}

/* ---------- 联系与支持 ---------- */

.page-faq .faq-help {
  position: relative;
  margin-top: 3rem;
  padding: 2.8rem 1.25rem 3.4rem;
  background: linear-gradient(180deg, var(--indigo) 0%, var(--ink) 100%);
  border-top: 1px solid var(--faq-glow-line);
  overflow: hidden;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -1px;
  transform: translateX(-50%);
  width: min(420px, 70%);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--lamp), transparent);
}

.page-faq .faq-help__inner {
  max-width: var(--wrap);
  margin-inline: auto;
  display: grid;
  gap: 2rem;
  align-items: start;
}

.page-faq .faq-help__title {
  margin: .7rem 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 5.6vw, 2.2rem);
  line-height: 1.24;
  color: var(--glow);
}

.page-faq .faq-help__lede {
  margin: .9rem 0 1.5rem;
  max-width: 32em;
  color: rgba(246, 235, 220, .82);
  line-height: 1.85;
}

.page-faq .faq-contact {
  list-style: none;
  margin: 0 0 1.6rem;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: .3rem;
  padding: .95rem 1.05rem;
  border-radius: var(--radius-sm);
  background: rgba(246, 235, 220, .06);
  border: 1px solid rgba(168, 176, 189, .22);
}

.page-faq .faq-contact__label {
  font-family: var(--font-num);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-contact__value {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--glow);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 184, 75, .5);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-contact__value a:hover,
.page-faq .faq-contact__value a:focus-visible {
  color: var(--lamp);
  border-color: var(--lamp);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin: 0;
}

.page-faq .faq-help__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(53, 214, 200, .26);
  box-shadow: 0 26px 58px -36px rgba(0, 0, 0, .95);
}

.page-faq .faq-help__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-help__media .media__caption {
  padding: .8rem 1.05rem;
  margin: 0;
  background: rgba(11, 18, 32, .78);
  color: rgba(168, 176, 189, .9);
  font-size: .8rem;
}

/* ---------- 平板 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding: 3.2rem 2rem 4rem;
  }

  .page-faq .faq-body {
    padding: 3.4rem 2rem 1.4rem;
    gap: 2.4rem;
  }

  .page-faq .faq-help {
    padding: 3.6rem 2rem 4.2rem;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 2.6rem;
    align-items: center;
  }

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

  .page-faq .faq-contact__row:last-child {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 4.4rem 2rem 5rem;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
    gap: 3.4rem;
    max-width: var(--wrap);
    margin-inline: auto;
  }

  .page-faq .faq-hero::before {
    right: -8%;
    bottom: -40%;
    width: 460px;
    height: 460px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 3.2rem;
    padding: 4.4rem 2rem 2rem;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6.5rem;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: .65rem;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    border-radius: var(--radius-sm);
    border-color: transparent;
    border-left: 3px solid rgba(168, 176, 189, .26);
    padding: .5rem .7rem .5rem .85rem;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--lamp);
    background: rgba(245, 184, 75, .1);
  }

  .page-faq .faq-group__head {
    margin-bottom: 1.35rem;
  }

  .page-faq .faq-item summary {
    padding: 1.1rem 1.35rem;
    font-size: 1.05rem;
  }

  .page-faq .faq-item__body {
    padding: 0 1.35rem 1.3rem 2.9rem;
    font-size: .97rem;
  }

  .page-faq .faq-help {
    padding: 4.6rem 2rem 5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item summary::after,
  .page-faq .faq-rail__link,
  .page-faq .faq-contact__value a {
    transition-duration: .01ms;
  }
}