.page-faq {
  --faq-rail: 250px;
  --faq-anchor: calc(var(--topbar-h) + 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(22px, 4vw, 44px) clamp(28px, 5vw, 60px);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 -1px 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 45%, var(--magenta) 78%, transparent);
  opacity: .5;
}

.page-faq .faq-hero__text {
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 1.8vw, 20px);
}

.page-faq .page-title {
  font-family: var(--font-wide);
  font-weight: 300;
  font-size: clamp(30px, 5.6vw, 56px);
  line-height: 1.18;
  letter-spacing: .04em;
  color: var(--ice);
  margin: 0;
  max-width: 20ch;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(16px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(14px, 3vw, 36px);
  margin: 4px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--hairline-soft);
}

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

.page-faq .faq-facts__num {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  color: var(--lime);
  letter-spacing: .02em;
}

.page-faq .faq-facts__label {
  font-size: 13px;
  color: var(--mist);
  letter-spacing: .04em;
}

.page-faq .faq-hero__visual {
  margin: 0;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--hairline);
  background: var(--deep);
}

.page-faq .media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
  letter-spacing: .03em;
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: end;
    gap: clamp(36px, 5vw, 76px);
  }
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  padding-block: clamp(30px, 5vw, 64px) clamp(40px, 6vw, 88px);
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, var(--faq-rail)) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-anchor);
  }
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--hairline);
}

.page-faq .faq-index__item {
  margin: 0;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 12px 11px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ice);
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(53, 230, 255, .10), transparent 70%);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: .06em;
}

.page-faq .faq-index__note {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.75;
  color: var(--mist);
  border-left: 1px solid var(--hairline-soft);
  padding-left: 14px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: clamp(34px, 5vw, 66px);
  min-width: 0;
}

.page-faq .faq-group,
.page-faq .faq-cadence-sec,
.page-faq .faq-howto-sec {
  scroll-margin-top: var(--faq-anchor);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-group__num {
  grid-row: 1;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: .1em;
}

.page-faq .faq-group__title {
  grid-row: 1;
  margin: 0;
  font-family: var(--font-wide);
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: .05em;
  color: var(--ice);
}

.page-faq .faq-group__lede {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 56ch;
}

.page-faq .faq-group:target .faq-group__title,
.page-faq .faq-cadence-sec:target .faq-group__title,
.page-faq .faq-howto-sec:target .faq-group__title {
  color: var(--cyan);
}

/* ---------- 手风琴条目 ---------- */
.page-faq .accordion__item {
  position: relative;
  padding-left: clamp(14px, 2vw, 22px);
  border-bottom: 1px solid var(--hairline-soft);
}

.page-faq .accordion__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet) 55%, var(--magenta));
  opacity: 0;
  transform: scaleY(.25);
  transform-origin: top center;
  transition: opacity .3s var(--ease), transform .35s var(--ease);
}

.page-faq .accordion__item[data-open]::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: clamp(15px, 2vw, 20px) 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--ice);
  transition: color .25s var(--ease);
}

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

.page-faq .faq-q {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.6;
  letter-spacing: .015em;
  font-weight: 500;
}

.page-faq .accordion__content p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

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

.page-faq .accordion__content {
  padding-bottom: clamp(16px, 2vw, 22px);
}

.page-faq .faq-basis {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 13.5px !important;
  line-height: 1.8 !important;
  color: var(--mist) !important;
  border-left: 1px solid var(--hairline);
  padding-left: 12px;
}

.page-faq .faq-basis__key {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 255, .35);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--ice);
  border-bottom-color: var(--ice);
}

/* ---------- 节奏表 ---------- */
.page-faq .faq-cadence__figure {
  margin: clamp(18px, 2.6vw, 28px) 0 clamp(20px, 3vw, 30px);
}

.page-faq .faq-cadence__wrap {
  overflow-x: auto;
  border: 1px solid var(--hairline);
  background: var(--deep);
}

.page-faq .faq-cadence {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
}

.page-faq .faq-cadence th,
.page-faq .faq-cadence td {
  padding: 14px 16px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--hairline-soft);
  white-space: nowrap;
}

.page-faq .faq-cadence thead th {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
  font-weight: 400;
  background: var(--slab);
}

.page-faq .faq-cadence tbody th {
  font-weight: 400;
  color: var(--ice);
  white-space: normal;
}

.page-faq .faq-cadence tbody td {
  color: var(--mist);
}

.page-faq .faq-cadence__val {
  color: var(--lime);
  letter-spacing: .02em;
}

.page-faq .faq-cadence tbody tr {
  transition: background-color .2s var(--ease);
}

.page-faq .faq-cadence tbody tr:hover {
  background: var(--slab);
}

.page-faq .faq-cadence tbody tr:hover .faq-col-owner {
  color: var(--cyan);
}

.page-faq .faq-cadence tbody tr:last-child th,
.page-faq .faq-cadence tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 对照表读法 ---------- */
.page-faq .faq-howto {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hairline-soft);
  border: 1px solid var(--hairline);
}

.page-faq .faq-howto__item {
  background: var(--deep);
  padding: clamp(18px, 2.4vw, 26px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
}

.page-faq .faq-howto__num {
  font-size: 15px;
  color: var(--magenta);
  letter-spacing: .06em;
}

.page-faq .faq-howto__title {
  margin: 0;
  font-size: clamp(16px, 1.7vw, 18px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--ice);
  letter-spacing: .02em;
}

.page-faq .faq-howto__item p {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 58ch;
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  border: 1px solid var(--hairline);
  border-radius: 2px;
  background: linear-gradient(150deg, rgba(53, 230, 255, .06), rgba(110, 91, 255, .05) 48%, transparent 82%), var(--deep);
  padding: clamp(22px, 3vw, 34px);
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-family: var(--font-wide);
  font-weight: 400;
  font-size: clamp(19px, 2.2vw, 24px);
  letter-spacing: .05em;
  color: var(--ice);
}

.page-faq .faq-contact > p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
  margin-bottom: 16px;
}

.page-faq .faq-contact__row .copy-mail {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 11px 16px;
  border: 1px solid var(--hairline);
  background: rgba(18, 28, 56, .7);
  color: var(--ice);
  cursor: pointer;
  border-radius: 2px;
  text-align: left;
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-contact__row .copy-mail:hover,
.page-faq .faq-contact__row .copy-mail:focus-visible {
  border-color: var(--cyan);
  background: rgba(18, 28, 56, 1);
}

.page-faq .copy-mail__key {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-faq .copy-mail__val {
  font-size: 14px;
  color: var(--cyan);
  letter-spacing: .01em;
}

.page-faq .copy-mail__hint {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-faq .copy-mail.is-done .copy-mail__hint {
  color: var(--lime);
}

.page-faq .faq-contact__tel {
  margin: 0 !important;
  font-size: 14px !important;
  color: var(--mist) !important;
}

.page-faq .faq-contact__note {
  margin: 0 !important;
  font-size: 13px !important;
  line-height: 1.85 !important;
  color: var(--mist) !important;
  border-top: 1px solid var(--hairline-soft);
  padding-top: 16px;
}

/* ---------- 底部提示带 ---------- */
.page-faq .faq-note {
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--mist);
  background: linear-gradient(90deg, rgba(143, 163, 196, .12), rgba(143, 163, 196, .02) 62%, transparent);
  padding: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-note__text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 64ch;
}

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

/* ---------- 窄屏微调 ---------- */
@media (max-width: 640px) {
  .page-faq .page-title {
    max-width: none;
  }

  .page-faq .faq-facts {
    gap: 12px 22px;
  }

  .page-faq .faq-cadence th,
  .page-faq .faq-cadence td {
    padding: 12px 13px;
    font-size: 13px;
  }

  .page-faq .faq-contact__row .copy-mail {
    width: 100%;
    justify-content: space-between;
  }

  .page-faq .faq-note__links .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion__item::before,
  .page-faq .faq-index__link,
  .page-faq .accordion__trigger {
    transition: none;
  }
}
<<<END>>>