.page-faq {
  --faq-index-w: 244px;
  --faq-gap: clamp(20px, 3vw, 52px);
  background: var(--ink);
  color: var(--bone);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(20px, 3.4vw, 40px);
  padding-bottom: clamp(30px, 5vw, 60px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(139, 92, 246, 0.22), transparent 62%),
    radial-gradient(90% 80% at 6% 8%, rgba(61, 245, 230, 0.1), transparent 58%),
    var(--ink);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(61, 245, 230, 0.045) 0 1px,
    transparent 1px 4px
  );
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 clamp(18px, 3vw, 30px);
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--rock);
}

.page-faq .faq-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(138, 148, 166, 0.6);
}

.page-faq .faq-crumb a {
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-crumb a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  color: rgba(243, 240, 232, 0.86);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 四段步骤条 ---------- */
.page-faq .faq-steps {
  position: relative;
  padding: clamp(30px, 4.4vw, 58px) 0;
  background: var(--night);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-steps__head {
  max-width: 66ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-steps__note {
  margin: 10px 0 0;
  color: rgba(243, 240, 232, 0.72);
}

.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
  border-radius: 2px;
  overflow: hidden;
}

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

.page-faq .faq-figure--wide {
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-steps__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .step {
  --step-c: var(--cyan);
  position: relative;
  display: block;
  padding: 18px 20px 26px;
  background: rgba(7, 11, 24, 0.72);
  border: 1px solid rgba(61, 245, 230, 0.26);
  border-radius: 2px 16px 2px 16px;
  color: var(--bone);
  text-decoration: none;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.page-faq .step:nth-child(2) {
  --step-c: var(--violet);
  border-color: rgba(139, 92, 246, 0.32);
}

.page-faq .step:nth-child(3) {
  --step-c: var(--magenta);
  border-color: rgba(255, 61, 154, 0.28);
}

.page-faq .step:nth-child(4) {
  --step-c: var(--orange);
  border-color: rgba(255, 159, 69, 0.3);
}

.page-faq .step:hover,
.page-faq .step:focus-visible {
  transform: translateY(-2px);
  background: rgba(14, 23, 48, 0.95);
  border-color: var(--step-c);
}

.page-faq .step__n {
  display: block;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
  color: var(--step-c);
  letter-spacing: 0.02em;
}

.page-faq .step__title {
  display: block;
  margin-top: 10px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.12rem;
  letter-spacing: 0.04em;
}

.page-faq .step__desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(243, 240, 232, 0.74);
}

.page-faq .step__bar {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 12px;
  height: 2px;
  background: var(--step-c);
  opacity: 0.55;
}

/* ---------- 主体：索引 + 折叠问答 ---------- */
.page-faq .faq-shell {
  padding-top: clamp(30px, 4.5vw, 62px);
  padding-bottom: clamp(36px, 5vw, 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .faq-index {
  min-width: 0;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.page-faq .faq-index__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--rock);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  font-size: 14px;
  white-space: nowrap;
  color: rgba(243, 240, 232, 0.78);
  text-decoration: none;
  background: rgba(14, 23, 48, 0.7);
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  border-radius: 0 10px 0 10px;
  transition: color 130ms ease, border-color 130ms ease;
}

.page-faq .faq-index__link .mono {
  color: var(--cyan);
  font-size: 11px;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  border-color: var(--glass-line);
}

.page-faq .faq-index__foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(138, 148, 166, 0.95);
}

.page-faq .faq-index__foot a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 159, 69, 0.5);
}

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 62px);
}

.page-faq .faq-group__head {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 6px;
}

.page-faq .faq-group__num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__lede {
  margin: 10px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(243, 240, 232, 0.7);
}

.page-faq .faq-group__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.page-faq .faq-group__split .faq-figure {
  margin: 18px 0 0;
  border-right: 2px solid var(--violet);
}

/* ---------- 折叠面板 ---------- */
.page-faq .qa-list {
  margin: 0;
}

.page-faq .qa {
  position: relative;
  border-bottom: 1px solid var(--line);
}

.page-faq .qa:first-child {
  border-top: 1px solid var(--line);
}

.page-faq .qa > summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 40px 16px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--bone);
  transition: color 130ms ease, background 130ms ease;
}

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

.page-faq .qa > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: transparent;
  transition: background 150ms ease, box-shadow 150ms ease;
}

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan);
}

.page-faq .qa > summary:hover {
  background: rgba(14, 23, 48, 0.6);
}

.page-faq .qa[open] > summary {
  color: var(--cyan);
}

.page-faq .qa[open] > summary::before {
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(61, 245, 230, 0.55);
}

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

.page-faq .qa__n {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.page-faq .qa[open] .qa__n {
  color: var(--magenta);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__a {
  padding: 0 40px 20px 16px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 240, 232, 0.8);
}

.page-faq .qa__a a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 159, 69, 0.5);
}

.page-faq .qa__a a:hover {
  color: var(--bone);
  border-bottom-color: var(--bone);
}

/* ---------- 客服面板 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(26px, 4vw, 44px);
  padding: clamp(22px, 3.4vw, 38px);
  background:
    linear-gradient(135deg, rgba(255, 159, 69, 0.12), transparent 58%),
    rgba(14, 23, 48, 0.92);
  border: 1px solid rgba(255, 159, 69, 0.32);
  border-left: 3px solid var(--orange);
  border-radius: 2px 20px 2px 20px;
}

.page-faq .faq-contact__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-faq .faq-contact__title {
  margin: 0 0 18px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  line-height: 1.35;
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
}

.page-faq .faq-contact__list span {
  flex: 0 0 72px;
  color: var(--rock);
  font-size: 13px;
}

.page-faq .faq-contact__list a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 245, 230, 0.45);
}

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(243, 240, 232, 0.62);
}

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0 0;
}

.page-faq .faq-contact__links .btn {
  text-decoration: none;
}

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

@media (min-width: 980px) {
  .page-faq .faq-steps__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    align-self: start;
    border-bottom: 0;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
    padding-left: 18px;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list li + li {
    margin-top: 6px;
  }

  .page-faq .faq-index__link {
    width: 100%;
    box-sizing: border-box;
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 9px 8px 9px 12px;
    white-space: normal;
    font-size: 14px;
    color: rgba(243, 240, 232, 0.7);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: rgba(61, 245, 230, 0.06);
    color: var(--cyan);
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
  }

  .page-faq .faq-group__split .faq-figure {
    margin-top: 22px;
  }

  .page-faq .qa > summary {
    padding: 18px 48px 18px 20px;
    font-size: 1.04rem;
  }

  .page-faq .qa__a {
    padding: 0 48px 22px 20px;
  }

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

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

@media (min-width: 1240px) {
  .page-faq {
    --faq-index-w: 268px;
  }

  .page-faq .faq-hero__lede {
    max-width: 58ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .qa > summary,
  .page-faq .faq-index__link,
  .page-faq .qa > summary::before {
    transition: none;
  }

  .page-faq .step:hover,
  .page-faq .step:focus-visible {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>