.page-faq {
  --faq-body: #33424f;
  --faq-muted: #5d6c7a;
  --faq-measure: 40em;
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ===== 首屏：章节预览 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  color: var(--ice);
  background:
    radial-gradient(100% 80% at 88% -6%, rgba(30, 107, 255, .58), rgba(6, 21, 38, 0) 62%),
    radial-gradient(70% 60% at 4% 104%, rgba(111, 182, 255, .2), rgba(6, 21, 38, 0) 68%),
    linear-gradient(158deg, #061526 0%, #0B3A6F 64%, #082a4f 100%);
  padding: clamp(22px, 4vw, 40px) 0 clamp(34px, 6vw, 68px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -42% 38%;
  height: 62%;
  background: repeating-linear-gradient(108deg, rgba(111, 182, 255, .16) 0 1px, transparent 1px 26px);
  transform: rotate(-6deg);
  pointer-events: none;
}

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

.page-faq .faq-hero .crumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(217, 226, 236, .7);
}

.page-faq .faq-hero .crumbs a {
  color: rgba(217, 226, 236, .7);
  text-decoration: none;
}

.page-faq .faq-hero .crumbs a:hover,
.page-faq .faq-hero .crumbs a:focus-visible {
  color: #fff;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
  margin-top: clamp(16px, 3vw, 28px);
}

.page-faq .faq-hero__lead .eyebrow {
  color: var(--blue-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
}

.page-faq .faq-hero h1 {
  margin: .28em 0 .5em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.4vw, 64px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: #fff;
}

.page-faq .faq-hero__intro {
  max-width: 32em;
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(217, 226, 236, .84);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  margin: 0 0 24px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: rgba(217, 226, 236, .78);
}

.page-faq .faq-hero__meta span + span::before {
  content: "·";
  margin: 0 12px 0 6px;
  color: var(--orange);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 索引列表 */
.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(217, 226, 236, .26);
}

.page-faq .faq-index__item {
  border-bottom: 1px solid rgba(217, 226, 236, .16);
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 2px 14px;
  align-items: baseline;
  padding: 12px 2px;
  text-decoration: none;
  color: var(--ice);
  transition: background .25s var(--ease), padding-left .25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(30, 107, 255, .18);
  padding-left: 10px;
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--blue-soft);
}

.page-faq .faq-index__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -.01em;
}

.page-faq .faq-index__hint {
  grid-column: 2;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(217, 226, 236, .66);
}

.page-faq .faq-hero__media {
  margin: clamp(24px, 4vw, 44px) 0 0;
}

.page-faq .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-faq .faq-hero__media .media__img {
  aspect-ratio: 12 / 7;
  box-shadow: 0 24px 60px rgba(3, 12, 24, .45);
}

.page-faq .faq-hero__media .media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: rgba(217, 226, 236, .55);
}

/* ===== 问答区块 ===== */
.page-faq .faq-block {
  padding: clamp(38px, 6vw, 78px) 0;
  border-top: 1px solid var(--line-soft);
  background: var(--mist);
}

.page-faq .faq-block--white {
  background: var(--white);
}

.page-faq .faq-block__grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 32px);
}

.page-faq .faq-block__no {
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--blue);
}

.page-faq .faq-block__no::after {
  content: "";
  flex: 0 0 auto;
  width: 48px;
  height: 1px;
  background: currentColor;
  opacity: .5;
}

.page-faq .faq-block__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 31px);
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-faq .faq-block__lead {
  margin: 0;
  max-width: 24em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-muted);
}

.page-faq .faq-block__link {
  margin: 14px 0 0;
  font-size: 14px;
}

.page-faq .faq-block__link a,
.page-faq .faq-block__more a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 107, 255, .35);
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-block__link a:hover,
.page-faq .faq-block__link a:focus-visible,
.page-faq .faq-block__more a:hover,
.page-faq .faq-block__more a:focus-visible {
  color: var(--navy-2);
  border-color: var(--navy-2);
}

/* 费用类型标签 */
.page-faq .faq-tagrow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
}

.page-faq .faq-tag {
  display: inline-block;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--navy-2);
  background: rgba(30, 107, 255, .08);
  border: 1px solid rgba(30, 107, 255, .22);
  border-radius: 999px;
}

.page-faq .faq-tag--accent {
  color: #a34a10;
  background: rgba(255, 138, 61, .12);
  border-color: rgba(255, 138, 61, .45);
}

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

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

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--ink);
  transition: color .25s var(--ease);
}

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

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

.page-faq .qa__q:focus-visible {
  outline: 1px solid var(--blue);
  outline-offset: 4px;
}

.page-faq .qa__sign {
  position: relative;
  flex: 0 0 13px;
  width: 13px;
  height: 13px;
  margin-left: auto;
  align-self: center;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--blue);
  transition: transform .25s var(--ease), background .25s var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1.5px;
}

.page-faq .qa__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1.5px;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

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

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

.page-faq .qa__body p {
  margin: 0 0 10px;
  max-width: var(--faq-measure);
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-body);
}

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

.page-faq .qa__aside {
  margin-top: 12px !important;
  padding: 8px 12px;
  font-size: 13.5px !important;
  color: var(--faq-muted) !important;
  border-left: 2px solid var(--orange);
  background: linear-gradient(90deg, rgba(255, 138, 61, .09), rgba(255, 138, 61, 0) 78%);
}

/* 周期刻度 */
.page-faq .cycle-strip {
  padding: 20px 18px 22px;
  margin-bottom: 22px;
  background: linear-gradient(150deg, rgba(11, 58, 111, .07), rgba(111, 182, 255, .1));
  border-left: 3px solid var(--blue);
}

.page-faq .cycle-strip__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(34px, 7vw, 46px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--navy-2);
}

.page-faq .cycle-strip__num span {
  margin-left: 4px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--faq-muted);
}

.page-faq .cycle-strip__desc {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--faq-muted);
}

.page-faq .cycle-strip__scale {
  display: flex;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px dashed rgba(11, 58, 111, .25);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--steel);
}

/* 工具章节配图 */
.page-faq .faq-figure {
  margin: 0 0 22px;
}

.page-faq .faq-figure .media__img {
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line-soft);
}

.page-faq .faq-figure .media__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--steel);
}

/* 深色联系区块 */
.page-faq .faq-block--dark {
  border-top: 0;
  color: var(--ice);
  background:
    radial-gradient(90% 70% at 90% 0%, rgba(30, 107, 255, .42), rgba(6, 21, 38, 0) 62%),
    linear-gradient(150deg, #061526 0%, #0B3A6F 100%);
}

.page-faq .faq-block--dark .faq-block__no {
  color: var(--blue-soft);
}

.page-faq .faq-block--dark .faq-block__title {
  color: #fff;
}

.page-faq .faq-block--dark .faq-block__lead {
  color: rgba(217, 226, 236, .74);
}

.page-faq .faq-block--dark .qa,
.page-faq .faq-block--dark .qa:first-of-type {
  border-color: rgba(217, 226, 236, .2);
}

.page-faq .faq-block--dark .qa__q {
  color: #fff;
}

.page-faq .faq-block--dark .qa__q:hover,
.page-faq .faq-block--dark .qa__q:focus-visible {
  color: var(--blue-soft);
}

.page-faq .faq-block--dark .qa__sign::before,
.page-faq .faq-block--dark .qa__sign::after {
  background: var(--blue-soft);
}

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

.page-faq .faq-block--dark .qa__body p {
  color: rgba(217, 226, 236, .86);
}

.page-faq .faq-block--dark .qa__aside {
  color: rgba(217, 226, 236, .72) !important;
  background: linear-gradient(90deg, rgba(255, 138, 61, .16), rgba(255, 138, 61, 0) 78%);
}

.page-faq .contact-card {
  display: grid;
  gap: 10px;
  padding: 16px 18px;
  background: rgba(244, 247, 251, .07);
  border: 1px solid rgba(217, 226, 236, .26);
}

.page-faq .contact-card__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(217, 226, 236, .14);
}

.page-faq .contact-card__label {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(217, 226, 236, .6);
}

.page-faq .contact-card__value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: .02em;
  color: var(--blue-soft);
  word-break: break-all;
}

.page-faq .contact-card__note {
  margin: 0 !important;
  font-size: 13px !important;
  line-height: 1.75;
  color: rgba(217, 226, 236, .72) !important;
}

.page-faq .faq-block__more {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 24px 0 0;
  font-size: 14px;
}

.page-faq .faq-block--dark .faq-block__more a {
  color: var(--blue-soft);
  border-color: rgba(111, 182, 255, .45);
}

.page-faq .faq-block--dark .faq-block__more a:hover,
.page-faq .faq-block--dark .faq-block__more a:focus-visible {
  color: #fff;
  border-color: #fff;
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-faq .faq-hero__intro {
    font-size: 16.5px;
  }

  .page-faq .qa__q {
    font-size: 16.5px;
    padding: 18px 0;
  }

  .page-faq .qa__body p {
    font-size: 15.5px;
  }

  .page-faq .cycle-strip {
    display: grid;
    grid-template-columns: minmax(0, 148px) minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-items: center;
    gap: 6px 24px;
    padding: 22px 24px 24px;
  }

  .page-faq .cycle-strip__num {
    grid-row: span 2;
    margin: 0;
  }

  .page-faq .cycle-strip__desc {
    margin: 0;
  }

  .page-faq .cycle-strip__scale {
    grid-column: 2;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
    gap: clamp(30px, 5vw, 64px);
  }

  .page-faq .faq-block__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    gap: clamp(32px, 5vw, 76px);
    align-items: start;
  }

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

  .page-faq .faq-block__lead {
    font-size: 15px;
  }

  .page-faq .faq-block__no {
    margin-bottom: 18px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-block__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }

  .page-faq .qa__q {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .qa__q,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .faq-block__link a,
  .page-faq .faq-block__more a {
    transition: none;
  }
}
<<<END>>>