.page-faq {
  --faq-ink-soft: #46586a;
  --faq-line: rgba(18, 20, 23, .09);
  --faq-band: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 5vw, 62px);
}

.page-faq .faq-hero__crumb {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-hero__title {
  margin: 14px 0 20px;
  font-size: clamp(42px, 9.4vw, 94px);
  line-height: 1.02;
  letter-spacing: -.035em;
  font-weight: 300;
  color: var(--ink);
}

.page-faq .faq-hero__title-thin {
  display: block;
  font-weight: 200;
  color: var(--slate);
}

.page-faq .faq-hero__title strong {
  display: block;
  font-weight: 900;
  letter-spacing: -.045em;
  color: var(--navy);
}

.page-faq .faq-hero__lede {
  max-width: var(--readw);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__actions {
  margin-top: clamp(22px, 3vw, 34px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__media {
  margin: 0;
  aspect-ratio: 12 / 7;
  border-radius: var(--r-xl);
  overflow: hidden;
}

.page-faq .media {
  position: relative;
  background: linear-gradient(150deg, var(--navy) 0%, var(--midnight) 100%);
}

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

/* ---------- 快速索引 ---------- */
.page-faq .faq-index {
  padding: clamp(30px, 5vw, 64px) 0;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
  padding: clamp(16px, 2.4vw, 22px);
  border-radius: var(--r-lg);
  background: var(--mist);
  color: var(--ink);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--navy);
  color: var(--white);
  transform: translateX(4px);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--lime);
}

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

.page-faq .faq-index__title {
  display: block;
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-index__desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__desc,
.page-faq .faq-index__link:focus-visible .faq-index__desc {
  color: rgba(255, 255, 255, .72);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__count,
.page-faq .faq-index__link:focus-visible .faq-index__count {
  color: var(--lime);
}

/* ---------- 主题区带 ---------- */
.page-faq .faq-topic {
  padding: clamp(34px, 6vw, 80px) 0;
}

.page-faq .faq-topic--feedback { --faq-band: var(--orange); }
.page-faq .faq-topic--download { --faq-band: var(--navy); }
.page-faq .faq-topic--match    { --faq-band: var(--lime); }
.page-faq .faq-topic--subscribe { --faq-band: var(--slate); }

.page-faq .faq-topic--dark {
  background: linear-gradient(160deg, var(--navy) 0%, var(--midnight) 100%);
  color: var(--white);
}

.page-faq .faq-topic__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 3vw, 28px);
}

.page-faq .faq-topic__band {
  display: block;
  height: 5px;
  width: clamp(64px, 20vw, 170px);
  border-radius: var(--pill);
  background: var(--faq-band);
}

.page-faq .faq-topic__rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-faq .faq-topic__num {
  font-family: var(--font-mono);
  font-size: clamp(42px, 10vw, 62px);
  line-height: .9;
  font-weight: 700;
  letter-spacing: -.04em;
  color: var(--navy);
  opacity: .16;
}

.page-faq .faq-topic__word {
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--slate);
}

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

.page-faq .faq-topic__main .section__title {
  margin: 0 0 12px;
  max-width: 22em;
}

.page-faq .faq-topic__lede {
  max-width: 40em;
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.82;
  color: var(--faq-ink-soft);
}

/* ---------- 深色主题覆盖 ---------- */
.page-faq .faq-topic--dark .section__title {
  color: var(--white);
}

.page-faq .faq-topic--dark .faq-topic__num {
  color: var(--lime);
  opacity: .5;
}

.page-faq .faq-topic--dark .faq-topic__word {
  color: rgba(255, 255, 255, .6);
}

.page-faq .faq-topic--dark .faq-topic__lede {
  color: rgba(255, 255, 255, .74);
}

/* ---------- 问答折叠卡 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-band);
  box-shadow: 0 20px 44px -30px rgba(11, 42, 74, .55);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 20px) clamp(16px, 2.2vw, 22px);
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -3px;
  border-radius: var(--r-lg);
}

.page-faq .faq-item__q {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: .06em;
  color: var(--orange);
}

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

.page-faq .faq-item__toggle {
  position: relative;
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: var(--pill);
  border: 1px solid currentColor;
  opacity: .55;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
              color var(--dur) var(--ease), border-color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-item__toggle::before,
.page-faq .faq-item__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: currentColor;
  border-radius: 2px;
}

.page-faq .faq-item__toggle::before { width: 11px; height: 1.5px; }
.page-faq .faq-item__toggle::after {
  width: 1.5px;
  height: 11px;
  transition: opacity var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__toggle {
  opacity: 1;
  transform: rotate(180deg);
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}

.page-faq .faq-item[open] .faq-item__toggle::after { opacity: 0; }

.page-faq .faq-item__body {
  padding: 0 clamp(16px, 2.2vw, 22px) clamp(18px, 2.4vw, 24px);
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--faq-ink-soft);
}

.page-faq .faq-topic--dark .faq-item {
  background: rgba(255, 255, 255, .05);
  border-color: rgba(255, 255, 255, .13);
}

.page-faq .faq-topic--dark .faq-item[open] {
  background: rgba(184, 255, 61, .08);
  border-color: rgba(184, 255, 61, .5);
  box-shadow: none;
}

.page-faq .faq-topic--dark .faq-item__summary { color: var(--white); }
.page-faq .faq-topic--dark .faq-item__q { color: var(--lime); }

.page-faq .faq-topic--dark .faq-item__body p {
  color: rgba(255, 255, 255, .72);
}

.page-faq .faq-topic--dark .faq-item[open] .faq-item__toggle {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--midnight);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding: clamp(36px, 6vw, 82px) 0;
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 54px);
  align-items: center;
}

.page-faq .faq-support__media {
  margin: 0;
  aspect-ratio: 3 / 2;
  border-radius: var(--r-xl);
  overflow: hidden;
}

.page-faq .faq-support__lede {
  max-width: var(--readw);
  margin-top: 12px;
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.82;
  color: var(--faq-ink-soft);
}

.page-faq .faq-support__channels {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-support__channel {
  padding: clamp(16px, 2.4vw, 22px);
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-support__label {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--slate);
}

.page-faq .faq-support__value {
  display: block;
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--navy);
  overflow-wrap: anywhere;
}

.page-faq .faq-support__note {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--faq-ink-soft);
}

/* ---------- 后续入口 ---------- */
.page-faq .faq-next {
  padding: clamp(30px, 5vw, 62px) 0;
  background: var(--mist);
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .faq-next__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--pill);
  border: 1px solid rgba(11, 42, 74, .16);
  background: var(--white);
  color: var(--navy);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

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

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    column-gap: clamp(36px, 5vw, 72px);
  }

  .page-faq .faq-hero__media {
    margin-top: clamp(0px, 2.4vw, 32px);
  }

  .page-faq .faq-topic__grid {
    grid-template-columns: 128px minmax(0, 1fr);
    column-gap: clamp(24px, 3.6vw, 58px);
  }

  .page-faq .faq-topic__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    position: sticky;
    top: calc(var(--header-h) + 34px);
  }

  .page-faq .faq-topic__num {
    font-size: clamp(56px, 6vw, 86px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__toggle,
  .page-faq .faq-next__link {
    transition: none;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    transform: none;
  }

  .page-faq .faq-item[open] .faq-item__toggle {
    transform: none;
  }
}