.page-faq {
  display: block;
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(36px, 6vw, 84px) 0 clamp(28px, 4vw, 52px);
}

.page-faq .faq-hero__title {
  max-width: 22ch;
  margin: 22px 0 0;
  font-size: clamp(30px, 5.4vw, 62px);
  line-height: 1.06;
}

.page-faq .faq-hero__lead {
  margin: 24px 0 0;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.75;
  color: var(--paper);
  opacity: .86;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 32px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__facts .num {
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-hero__facts li > span:last-child {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 四步流程 ---------- */
.page-faq .faq-flow {
  padding: clamp(44px, 6vw, 84px) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-flow__title {
  max-width: 26ch;
  margin: 14px 0 0;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.14;
}

.page-faq .flow {
  display: grid;
  gap: 20px;
  margin: 38px 0 0;
}

.page-faq .flow__step {
  padding-top: 14px;
  border-top: 2px solid var(--line);
}

.page-faq .flow__step:first-child {
  border-top-color: var(--lime);
}

.page-faq .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-faq .flow__step:first-child .flow__num {
  color: var(--lime);
}

.page-faq .flow__title {
  display: block;
  margin-top: 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .flow__text {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .flow__arrow {
  display: none;
}

.page-faq .faq-flow__grid {
  display: grid;
  gap: 30px;
  margin-top: 42px;
}

.page-faq .faq-flow__note p {
  margin: 0 0 16px;
  color: var(--paper);
  opacity: .88;
}

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

.page-faq .faq-flow__figure {
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-book {
  padding: clamp(44px, 6vw, 96px) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-book__grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-index {
  align-self: start;
}

.page-faq .faq-index__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 220ms var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--line);
  transition: color 220ms var(--ease);
}

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

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

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--lime);
}

.page-faq .faq-index__link[aria-current="true"] .faq-index__num {
  color: var(--lime);
}

.page-faq .faq-group {
  margin-top: 54px;
  scroll-margin-top: 96px;
}

.page-faq .faq-answers > .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 26px);
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-group__title .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
}

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

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

.page-faq .qa__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__head:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 4px;
}

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.8vw, 19px);
  line-height: 1;
  color: var(--mist);
  transition: color 220ms var(--ease);
}

.page-faq .qa__head:hover .qa__num {
  color: var(--lime);
}

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

.page-faq .qa__q {
  font-size: clamp(15px, 1.6vw, 19px);
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .qa__sign {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  background: var(--mist);
  transform: translateY(-50%);
  transition: transform 240ms var(--ease), background 240ms var(--ease);
}

.page-faq .qa__sign::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .qa[open] .qa__sign::before {
  background: var(--lime);
}

.page-faq .qa[open] .qa__sign::after {
  transform: translateY(-50%) rotate(0deg);
  background: var(--lime);
}

.page-faq .qa__body {
  padding: 0 0 22px;
  border-left: 2px solid transparent;
  transition: border-color 240ms var(--ease);
}

.page-faq .qa[open] .qa__body {
  border-left-color: var(--lime);
  padding-left: 16px;
  animation: faq-open 240ms var(--ease);
}

.page-faq .qa__body > p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
  opacity: .85;
}

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

.page-faq .qa__body a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-deep);
  padding-bottom: 1px;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  background: var(--lime);
  color: var(--ink);
}

.page-faq .faq-flow__note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-deep);
}

.page-faq .faq-flow__note a:hover,
.page-faq .faq-flow__note a:focus-visible {
  background: var(--lime);
  color: var(--ink);
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 图片容器 ---------- */
.page-faq .figure {
  position: relative;
  overflow: hidden;
  background: var(--panel);
}

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

.page-faq .faq-banner {
  margin: 20px 0 8px;
  background: var(--moss);
}

/* ---------- 客服收束 ---------- */
.page-faq .faq-help {
  padding: clamp(44px, 6vw, 96px) 0 clamp(56px, 7vw, 112px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-help__panel {
  padding: clamp(26px, 4vw, 52px);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-help__title {
  max-width: 20ch;
  margin: 12px 0 0;
  font-size: clamp(22px, 2.8vw, 34px);
  line-height: 1.18;
}

.page-faq .faq-help__lead {
  max-width: 38em;
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
  opacity: .84;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-help__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  display: grid;
  gap: 5px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-help__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-help__value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__lead {
    max-width: 46ch;
  }

  .page-faq .flow {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: start;
    gap: 10px;
  }

  .page-faq .flow__arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 14px;
    color: var(--line);
  }

  .page-faq .flow__arrow svg {
    width: 22px;
    height: 22px;
  }

  .page-faq .faq-flow__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: 60px;
    margin-top: 52px;
  }

  .page-faq .faq-flow__figure {
    max-width: none;
    margin: 0;
  }

  .page-faq .faq-book__grid {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 68px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-group {
    margin-top: 76px;
  }

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

  .page-faq .qa[open] .qa__body {
    padding-left: 40px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .qa__num,
  .page-faq .qa__body,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .qa[open] .qa__body {
    animation: none;
  }
}
<<<END>>>