.page-faq {
  background: var(--sand);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: calc(-1 * var(--header-h));
  padding: calc(var(--header-h) + clamp(28px, 5vw, 68px)) var(--pad) clamp(32px, 4.6vw, 60px);
  background:
    radial-gradient(130% 100% at 92% -10%, rgba(19, 87, 216, 0.62), transparent 60%),
    radial-gradient(90% 80% at 0% 110%, rgba(31, 174, 154, 0.2), transparent 62%),
    var(--navy);
  color: var(--white);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: clamp(260px, 46vw, 620px);
  height: clamp(260px, 46vw, 620px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--shell);
  margin: 0 auto;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.62);
}

.page-faq .faq-crumbs a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.28);
  padding-bottom: 1px;
}

.page-faq .faq-crumbs a:hover {
  color: var(--white);
  border-bottom-color: var(--coral);
}

.page-faq .faq-hero__kicker {
  margin: clamp(22px, 4vw, 44px) 0 10px;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--teal);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-size: clamp(2.7rem, 9vw, 6rem);
  line-height: 0.94;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.page-faq .faq-hero__lede {
  max-width: 34em;
  margin: clamp(18px, 3vw, 30px) 0 0;
  font-size: clamp(1rem, 1.25vw, 1.125rem);
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.84);
}

.page-faq .faq-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px clamp(16px, 3vw, 40px);
  margin: clamp(22px, 3.6vw, 40px) 0 0;
  padding: clamp(14px, 2.2vw, 20px) 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

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

.page-faq .faq-hero__meta-k {
  color: rgba(255, 255, 255, 0.55);
}

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

/* ---------- 索引区 ---------- */
.page-faq .faq-index {
  padding: clamp(40px, 6vw, 84px) 0;
  background: var(--sand);
}

.page-faq .faq-index__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-h2 {
  margin: 10px 0 0;
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-index__main .lede {
  margin: 14px 0 clamp(22px, 3vw, 32px);
  max-width: 30em;
  color: var(--ink-soft);
  line-height: 1.78;
}

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

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

.page-faq .faq-cat__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 12px;
  padding: clamp(12px, 1.8vw, 17px) 6px;
  color: var(--ink);
  text-decoration: none;
  transition: background var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

.page-faq .faq-cat__link:hover,
.page-faq .faq-cat__link:focus-visible {
  background: var(--mist);
  padding-left: 12px;
}

.page-faq .faq-cat__no {
  font-size: 0.8125rem;
  color: var(--blue);
  font-weight: 700;
}

.page-faq .faq-cat__name {
  font-size: clamp(1rem, 1.5vw, 1.1875rem);
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-cat__count {
  font-size: 0.75rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.page-faq .faq-index__tip {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-index__tip a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(19, 87, 216, 0.35);
}

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

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--mist);
  overflow: hidden;
}

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

.page-faq .faq-figure__stamp {
  display: block;
  padding: 10px 14px;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.page-faq .faq-figure--inline {
  margin: 18px 0 clamp(20px, 3vw, 30px);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  background: var(--white);
  padding: clamp(40px, 6vw, 88px) 0;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.page-faq .faq-rail__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  border-left: 2px solid var(--line);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--ink-soft);
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .faq-rail__link .mono {
  font-size: 0.6875rem;
  color: var(--blue);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-left-color: var(--blue);
  background: var(--mist);
  color: var(--ink);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 62px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-faq .faq-group__head .chapter-no {
  flex: 0 0 auto;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  line-height: 1;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__lede {
  margin: 10px 0 18px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  border: 1px solid var(--line);
  background: var(--white);
  margin-top: 10px;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-faq .qa:hover {
  border-color: var(--blue);
}

.page-faq .qa[open] {
  border-color: var(--blue);
  box-shadow: var(--shadow-1);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
  padding: clamp(13px, 1.9vw, 18px) clamp(14px, 2.2vw, 22px);
  cursor: pointer;
  list-style: none;
  font-size: clamp(0.9875rem, 1.4vw, 1.125rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: -2px;
}

.page-faq .qa__no {
  flex: 0 0 auto;
  padding-top: 0.28em;
  font-size: 0.75rem;
  color: var(--blue);
}

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

.page-faq .qa__icon {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 0.34em;
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--coral);
  transform: translate(-50%, -50%);
  transition: transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}

.page-faq .qa__icon::before {
  width: 15px;
  height: 2px;
}

.page-faq .qa__icon::after {
  width: 2px;
  height: 15px;
}

.page-faq .qa[open] .qa__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 clamp(14px, 2.2vw, 22px) clamp(16px, 2.2vw, 22px);
}

.page-faq .qa__meta {
  margin: 0 0 10px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-faq .qa__body p {
  margin: 0 0 0.7em;
  max-width: 34em;
  font-size: clamp(0.9375rem, 1.15vw, 1rem);
  line-height: 1.8;
  color: var(--ink-soft);
}

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

.page-faq .qa__body a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(19, 87, 216, 0.35);
}

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

/* ---------- 镜像双栏 ---------- */
.page-faq .faq-mirror {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.page-faq .faq-mirror__col {
  padding: clamp(12px, 2vw, 18px);
  background: var(--mist);
  border-top: 3px solid var(--blue);
}

.page-faq .faq-mirror__col:last-child {
  border-top-color: var(--teal);
}

.page-faq .faq-mirror__title {
  margin: 0 0 10px;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--ink);
  font-weight: 700;
}

.page-faq .faq-mirror__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-mirror__list li {
  padding: 7px 0;
  border-bottom: 1px solid rgba(201, 212, 229, 0.85);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

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

/* ---------- 批次区 ---------- */
.page-faq .faq-batches {
  position: relative;
  background:
    linear-gradient(180deg, rgba(19, 87, 216, 0.16), transparent 42%),
    var(--navy);
  color: var(--white);
  padding: clamp(44px, 6vw, 88px) 0;
}

.page-faq .faq-batches__head {
  max-width: 40em;
}

.page-faq .faq-batches__title {
  margin: 10px 0 0;
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-batches__lede {
  margin: 14px 0 0;
  font-size: clamp(0.9375rem, 1.15vw, 1rem);
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.76);
}

.page-faq .faq-batch-list {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-faq .batch {
  display: grid;
  gap: 8px;
  padding: clamp(14px, 2vw, 20px) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.page-faq .batch__no {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--teal);
}

.page-faq .batch__cat {
  justify-self: start;
}

.page-faq .batch__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
}

.page-faq .faq-batches__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 36px);
}

/* ---------- 支持区 ---------- */
.page-faq .faq-support {
  background: var(--sand);
  padding: clamp(44px, 6vw, 84px) 0;
}

.page-faq .faq-support__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
}

.page-faq .faq-support__intro .lede {
  margin: 14px 0 0;
  max-width: 30em;
  color: var(--ink-soft);
  line-height: 1.78;
}

.page-faq .faq-contact {
  margin: 0;
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
}

.page-faq .faq-contact__item {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__item:first-child {
  padding-top: 0;
}

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

.page-faq .faq-contact__key {
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.page-faq .faq-contact__val {
  margin: 0;
  font-size: clamp(0.9375rem, 1.2vw, 1.0625rem);
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-mirror {
    grid-template-columns: 1fr 1fr;
    gap: clamp(12px, 2vw, 22px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-index__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .batch {
    grid-template-columns: 132px 118px minmax(0, 1fr);
    align-items: center;
    gap: clamp(12px, 2vw, 26px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 218px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-faq .faq-rail__nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__icon::before,
  .page-faq .qa__icon::after,
  .page-faq .qa,
  .page-faq .faq-cat__link,
  .page-faq .faq-rail__link {
    transition: none;
  }
}
<<<END>>>