.page-faq {
  --faq-num: 44px;
  --faq-card-gap: 12px;
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  border-bottom: 1px solid var(--line);
  background-color: var(--bg);
  background-image:
    repeating-linear-gradient(90deg, rgba(31, 59, 84, .45) 0 1px, transparent 1px 72px),
    radial-gradient(120% 92% at 90% 0%, rgba(43, 233, 198, .10), transparent 62%);
  padding: 26px 0 40px;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-faq .faq-hero__copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gray);
  text-transform: uppercase;
}

.page-faq .faq-kicker__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43, 233, 198, .18);
  animation: faq-pulse 2.4s var(--ease) infinite;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.4vw, 3rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 48ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gray);
  text-decoration: none;
  transition: border-color .25s var(--ease), color .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--cyan);
  color: var(--white);
  transform: translateY(-2px);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-2);
  box-shadow: var(--hard);
}

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

.page-faq .faq-hero__figure .figure-caption,
.page-faq .faq-sync__figure .figure-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--gray);
}

/* ---------- 章节通用 ---------- */
.page-faq .section {
  padding: 46px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .section-head {
  max-width: 62ch;
  margin-bottom: 26px;
}

.page-faq .section-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  border-bottom: 2px solid rgba(43, 233, 198, .35);
  display: inline-block;
  padding-bottom: 6px;
}

.page-faq .section-title {
  margin: 12px 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.35rem, 4.4vw, 2rem);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .section-lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 三步自查 ---------- */
.page-faq .steps {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  position: relative;
}

.page-faq .step__link {
  display: block;
  height: 100%;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: var(--bg-2);
  text-decoration: none;
  color: inherit;
  transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .step__link:hover,
.page-faq .step__link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: var(--hard-cyan);
}

.page-faq .step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 14px;
  border: 2px solid var(--cyan);
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .step__title {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .step__desc {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--gray);
}

.page-faq .step__go {
  display: block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--orange);
}

/* ---------- 问答两栏 ---------- */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-faq .pills {
  display: flex;
  gap: 8px;
  margin-bottom: 22px;
  padding-bottom: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .pill {
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  font-size: 13.5px;
  letter-spacing: .02em;
  color: var(--gray);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .pill:hover,
.page-faq .pill:focus-visible {
  border-color: var(--orange);
  color: var(--white);
}

.page-faq .qa-group {
  margin-bottom: 30px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-faq .qa-group__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  color: var(--white);
}

.page-faq .qa-group__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-2);
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--violet);
}

.page-faq .qa {
  margin-bottom: var(--faq-card-gap);
  border: 1px solid var(--line);
  background: var(--bg-2);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--line-2);
  box-shadow: var(--hard-cyan);
}

.page-faq .qa summary {
  position: relative;
  padding: 15px 46px 15px 16px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--white);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .qa[open] summary::after {
  content: "\2212";
}

.page-faq .qa summary:hover {
  color: var(--cyan);
}

.page-faq .qa__body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line);
  margin-top: 0;
}

.page-faq .qa__body p {
  margin: 14px 0 0;
  font-size: 14.8px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 侧栏客服卡 ---------- */
.page-faq .faq-side__card {
  padding: 20px;
  background: var(--bg-2);
  box-shadow: var(--hard);
}

.page-faq .faq-side__title {
  margin: 12px 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.34;
  color: var(--white);
}

.page-faq .faq-side__text {
  margin: 0 0 16px;
  font-size: 14.2px;
  line-height: 1.72;
  color: var(--gray);
}

.page-faq .faq-side__list {
  margin: 0 0 18px;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-faq .faq-side__list li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 12px;
}

.page-faq .faq-side__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-faq .faq-side__value {
  font-family: var(--font-mono);
  font-size: 14px;
  word-break: break-all;
  color: var(--white);
}

.page-faq .faq-side__card .btn + .btn {
  margin-top: 8px;
}

/* ---------- 同步状态 ---------- */
.page-faq .sync-stack {
  display: grid;
  gap: 12px;
}

.page-faq .sync-demo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: var(--bg-3);
}

.page-faq .sync-demo__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  animation: faq-pulse 2.4s var(--ease) infinite;
}

.page-faq .sync-demo__text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: var(--white);
}

.page-faq .sync-demo__time {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--gray);
}

.page-faq .sync-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-2);
  background: var(--bg-2);
}

.page-faq .sync-card--ok { border-left-color: var(--green); }
.page-faq .sync-card--wait { border-left-color: var(--orange); }
.page-faq .sync-card--bad { border-left-color: var(--red); }

.page-faq .sync-card__state {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .sync-card__body {
  margin: 10px 0 0;
  font-size: 14.2px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .faq-sync__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-2);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-help__box {
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--bg-2);
}

.page-faq .faq-help__box--channels {
  border-top: 3px solid var(--orange);
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  color: var(--white);
}

.page-faq .faq-help__list {
  margin: 0;
  padding-left: 20px;
}

.page-faq .faq-help__list li {
  margin-bottom: 11px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .faq-help__list strong {
  color: var(--white);
  font-weight: 700;
}

.page-faq .faq-help__channels {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__channels li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-help__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--gray);
}

.page-faq .faq-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

/* ---------- 动效 ---------- */
@keyframes faq-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-kicker__dot,
  .page-faq .sync-demo__dot {
    animation: none;
  }
  .page-faq .step__link,
  .page-faq .faq-jump__link,
  .page-faq .pill {
    transition: none;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 34px 0 48px;
  }

  .page-faq .faq-hero__figure .figure-media img {
    aspect-ratio: 1100 / 750;
  }

  .page-faq .section {
    padding: 56px 0;
  }

  .page-faq .faq-side__list li,
  .page-faq .faq-help__channels li {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 14px;
  }

  .page-faq .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    padding-top: 44px;
  }

  .page-faq .steps::before {
    content: "";
    position: absolute;
    top: 22px;
    left: 16.66%;
    right: 16.66%;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--line));
  }

  .page-faq .step__num {
    position: absolute;
    top: -44px;
    left: 50%;
    margin: 0;
    transform: translateX(-50%);
    background: var(--bg);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 40px;
  }

  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 32px;
  }

  .page-faq .faq-grid--sync {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }

  .page-faq .faq-side__card {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-sync__figure {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}