.page-faq {
  --faq-rail: 108px;
  --faq-hair: rgba(56, 242, 208, .38);
  background: var(--ink);
  color: var(--tx);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 24px 0 26px;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(118% 88% at 94% -12%, rgba(56, 242, 208, .16), transparent 62%),
    radial-gradient(86% 72% at -12% 112%, rgba(255, 138, 61, .12), transparent 66%),
    linear-gradient(180deg, var(--grad), var(--ink) 70%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(36, 70, 60, .5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 70, 60, .5) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 74%);
  mask-image: linear-gradient(180deg, #000, transparent 74%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 20px;
}

.page-faq .faq-hero__copy h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 7.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--hi);
  margin: 12px 0 16px;
  max-width: 15em;
}

.page-faq .faq-hero__copy .gs-lead {
  max-width: 40em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--tx);
}

.page-faq .faq-hero__art {
  border: 1px solid var(--rule);
  border-radius: var(--r-l);
  overflow: hidden;
  background: linear-gradient(140deg, var(--grad), var(--panel));
}

.page-faq .faq-hero__art img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 190px;
  object-fit: cover;
}

.page-faq .faq-jump {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-jump::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 170px;
  height: 2px;
  background: linear-gradient(90deg, var(--cy), var(--or));
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-block {
  padding: 34px 0;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-block:first-of-type {
  border-top: 0;
}

.page-faq .faq-block__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .faq-rail {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-rail__num {
  font-family: var(--font-data);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--cy);
}

.page-faq .faq-rail__label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--tx2);
}

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

.page-faq .faq-block__body .gs-band {
  padding-bottom: 18px;
}

.page-faq .faq-block__body .gs-band__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 32px);
  line-height: 1.18;
  letter-spacing: -.015em;
  color: var(--hi);
}

.page-faq .faq-block__body .gs-band__lead {
  margin-top: 10px;
  max-width: 42em;
  color: var(--tx2);
  line-height: 1.85;
}

/* ---------- 折叠问题 ---------- */

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-q {
  border: 1px solid var(--rule);
  border-radius: var(--r-m);
  background: var(--panel);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-q[open] {
  background: var(--raise);
  border-color: var(--faq-hair);
}

.page-faq .faq-q > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--hi);
}

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

.page-faq .faq-q > summary:focus-visible {
  outline: 2px solid var(--cy);
  outline-offset: -2px;
}

.page-faq .faq-q__idx {
  padding-top: 5px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--tx2);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q[open] .faq-q__idx {
  color: var(--cy);
}

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

.page-faq .faq-q__sign {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 6px;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--cy);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-q__sign::before {
  width: 14px;
  height: 2px;
}

.page-faq .faq-q__sign::after {
  width: 2px;
  height: 14px;
}

.page-faq .faq-q[open] .faq-q__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-q__body {
  padding: 0 16px 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--tx);
}

.page-faq .faq-q__body::before {
  content: "";
  display: block;
  height: 1px;
  margin-bottom: 14px;
  background: linear-gradient(90deg, var(--faq-hair), transparent 82%);
}

.page-faq .faq-q__body p + p {
  margin-top: 10px;
}

/* ---------- 图注 ---------- */

.page-faq .faq-figure {
  margin: 20px 0 0;
  border: 1px solid var(--rule);
  border-radius: var(--r-m);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  line-height: 1.75;
  color: var(--tx2);
}

/* ---------- 快速自检带 ---------- */

.page-faq .faq-check {
  padding: 34px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(70% 120% at 100% 0%, rgba(255, 138, 61, .10), transparent 68%),
    linear-gradient(180deg, var(--ink), rgba(14, 58, 49, .55));
}

.page-faq .faq-check__head {
  position: relative;
  padding-left: 16px;
  margin-bottom: 22px;
}

.page-faq .faq-check__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--cy), var(--or));
  border-radius: 2px;
}

.page-faq .faq-check__head h2 {
  margin-top: 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 4vw, 28px);
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--hi);
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--rule);
  border-radius: var(--r-m);
  overflow: hidden;
  background: var(--rule);
}

.page-faq .faq-step {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--panel);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--rule);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-step:hover::before,
.page-faq .faq-step:focus-within::before {
  background: linear-gradient(90deg, var(--cy), var(--or));
}

.page-faq .faq-step__num {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cy);
}

.page-faq .faq-step h3 {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--hi);
}

.page-faq .faq-step p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--tx2);
}

/* ---------- 收尾 ---------- */

.page-faq .faq-close {
  position: relative;
  padding: 40px 0 56px;
  border-top: 1px solid var(--rule);
  background:
    radial-gradient(90% 130% at 8% 0%, rgba(56, 242, 208, .12), transparent 62%),
    linear-gradient(180deg, var(--ink), var(--grad));
  overflow: hidden;
}

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

.page-faq .faq-close h2 {
  margin: 10px 0 12px;
  max-width: 20em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 5vw, 36px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--hi);
}

.page-faq .faq-close__lead {
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--tx);
}

.page-faq .faq-close__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-close__note {
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--tx2);
}

.page-faq .faq-close__note a {
  color: var(--cy);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 208, .45);
}

.page-faq .faq-close__note a:hover {
  color: var(--or);
  border-bottom-color: rgba(255, 138, 61, .55);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding: 30px 0 34px;
  }

  .page-faq .faq-hero::before {
    background-size: 64px 64px;
  }

  .page-faq .faq-check {
    padding: 44px 0;
  }

  .page-faq .faq-q > summary {
    padding: 18px 22px;
    font-size: 17px;
  }

  .page-faq .faq-q__body {
    padding: 0 22px 20px;
  }

  .page-faq .faq-close {
    padding: 52px 0 72px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-step {
    padding: 24px 22px 26px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: end;
    gap: 42px;
  }

  .page-faq .faq-hero__art img {
    min-height: 280px;
  }

  .page-faq .faq-block {
    padding: 46px 0;
  }

  .page-faq .faq-block__inner {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 34px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 92px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 2px 0 2px 16px;
    border-bottom: 0;
  }

  .page-faq .faq-rail::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: repeating-linear-gradient(180deg, var(--rule) 0 7px, transparent 7px 15px);
  }

  .page-faq .faq-rail__num {
    font-size: 38px;
  }

  .page-faq .faq-q__txt {
    padding-right: 24px;
  }

  .page-faq .faq-figure {
    margin-top: 24px;
  }
}