.page-faq {
  --faq-line: rgba(127, 243, 236, 0.14);
  --faq-wash: rgba(15, 33, 51, 0.62);
  display: block;
}

.page-faq .breadcrumb {
  padding: clamp(1rem, 3vw, 1.6rem) 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.4rem, 4.5vw, 3rem) 0 clamp(2rem, 6vw, 3.6rem);
  background-image: radial-gradient(60% 120% at 16% 0%, rgba(37, 224, 212, 0.13), transparent 68%),
    radial-gradient(46% 90% at 92% 6%, rgba(245, 178, 60, 0.07), transparent 70%);
  background-repeat: no-repeat;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 9vw, 4.9rem);
  line-height: 0.99;
  letter-spacing: -0.035em;
  color: var(--ceramic);
  margin: 0.6rem 0 0;
}

.page-faq .faq-hero__lead .lede {
  margin: 1.1rem 0 0;
  max-width: 48ch;
  color: var(--ceramic);
  opacity: 0.78;
  font-size: clamp(0.96rem, 2vw, 1.08rem);
  line-height: 1.85;
}

.page-faq .faq-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.page-faq .faq-fact {
  padding: 0.95rem 0.9rem 1rem;
  background: var(--faq-wash);
  border: 1px solid var(--faq-line);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.page-faq .faq-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-fact__num--amber {
  color: var(--amber);
}

.page-faq .faq-fact__label {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: rgba(237, 243, 247, 0.6);
}

.page-faq .faq-hero__media {
  margin: clamp(1.7rem, 4vw, 2.6rem) 0 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  overflow: hidden;
}

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

/* ---------- 主体分栏 ---------- */
.page-faq .faq-index {
  padding: clamp(1.4rem, 4vw, 2.2rem) 0 clamp(3rem, 7vw, 5.5rem);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-faq .faq-rail__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: rgba(237, 243, 247, 0.45);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.55rem;
  font-size: 0.88rem;
  color: rgba(237, 243, 247, 0.72);
  text-decoration: none;
  border-left: 2px solid var(--faq-line);
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease), transform var(--speed) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan-soft);
  border-left-color: var(--amber);
  transform: translateX(3px);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--amber);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 6rem;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.4rem, 6vw, 4rem);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.4rem 0.7rem;
  padding-bottom: 0.85rem;
  margin-bottom: 0.35rem;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__head .section-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--amber);
}

.page-faq .faq-group__head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.4vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--ceramic);
}

.page-faq .faq-group__head .section-note {
  margin: 0 0 0 auto;
  font-size: 0.8rem;
  color: rgba(237, 243, 247, 0.48);
}

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

.page-faq .faq-q__heading {
  margin: 0;
  font-size: 1rem;
}

.page-faq .accordion__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.8rem;
  padding: 1.1rem 0.2rem;
  background: none;
  border: 0;
  color: var(--ceramic);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color var(--speed) var(--ease), padding-left var(--speed) var(--ease);
}

.page-faq .accordion__trigger:hover,
.page-faq .accordion__trigger:focus-visible {
  color: var(--cyan-soft);
  padding-left: 0.6rem;
}

.page-faq .accordion__trigger[aria-expanded="true"] {
  color: var(--cyan);
}

.page-faq .faq-q__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--amber);
  padding-top: 0.28rem;
}

.page-faq .faq-q__text {
  min-width: 0;
}

.page-faq .faq-q__arrow {
  width: 10px;
  height: 10px;
  margin-top: 0.45rem;
  border-right: 2px solid var(--amber);
  border-bottom: 2px solid var(--amber);
  transform: rotate(45deg);
  transition: transform var(--speed) var(--ease);
}

.page-faq .accordion__trigger[aria-expanded="true"] .faq-q__arrow {
  transform: rotate(-135deg);
}

.page-faq .accordion__panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--speed) var(--ease), opacity var(--speed) var(--ease);
}

.page-faq .accordion__item[data-open] .accordion__panel {
  max-height: 60rem;
  opacity: 1;
  padding-bottom: 1.25rem;
}

.page-faq .accordion__panel p {
  margin: 0 0 0.8rem;
  max-width: 64ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(237, 243, 247, 0.84);
}

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

.page-faq .accordion__panel a {
  color: var(--cyan-soft);
  text-decoration-color: rgba(127, 243, 236, 0.4);
  text-underline-offset: 3px;
}

.page-faq .accordion__panel a:hover {
  color: var(--amber);
}

.page-faq .faq-note {
  position: relative;
  padding-left: 0.85rem;
  border-left: 2px solid var(--amber);
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--amber-soft);
}

/* ---------- 客服引导 ---------- */
.page-faq .faq-help {
  margin-top: clamp(2.6rem, 6vw, 4.4rem);
  padding: clamp(1.5rem, 4vw, 2.6rem);
  scroll-margin-top: 6rem;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.4rem);
}

.page-faq .faq-help .section-title {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.6vw, 2.1rem);
  letter-spacing: -0.02em;
  color: var(--ceramic);
}

.page-faq .faq-help__text {
  margin: 0.9rem 0 1.3rem;
  max-width: 56ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: rgba(237, 243, 247, 0.82);
}

.page-faq .faq-help__contact {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-help__row {
  display: grid;
  gap: 0.15rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px dashed rgba(92, 110, 126, 0.35);
}

.page-faq .faq-help__key {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-faq .faq-help__val {
  font-size: 0.98rem;
  color: var(--ceramic);
  word-break: break-word;
}

.page-faq .faq-help__fineprint {
  margin: 0 0 1.3rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(237, 243, 247, 0.5);
}

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

.page-faq .faq-help__media {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  overflow: hidden;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-help__row {
    grid-template-columns: 6.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 0.8rem;
  }

  .page-faq .faq-help__key {
    padding-top: 0.12rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 3.5rem);
  }

  .page-faq .faq-hero__lead .lede {
    max-width: 44ch;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(2.2rem, 5vw, 4rem);
  }

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

  .page-faq .faq-rail__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.15rem;
  }

  .page-faq .faq-rail__link {
    padding: 0.5rem 0.6rem 0.5rem 0.7rem;
  }

  .page-faq .faq-rail__label {
    padding-left: 0.7rem;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-index {
    padding-top: clamp(1.8rem, 3vw, 2.8rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion__panel,
  .page-faq .faq-q__arrow,
  .page-faq .accordion__trigger,
  .page-faq .faq-rail__link {
    transition: none;
  }
}