.page-faq {
  --faq-cell: 32px;
  --faq-gap: clamp(20px, 4vw, 48px);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-faq a {
  color: inherit;
}

.page-faq .bs-breadcrumb a {
  color: var(--gray);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .bs-breadcrumb a:hover,
.page-faq .bs-breadcrumb a:focus-visible {
  color: var(--mint);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(99, 255, 196, .10), transparent 62%),
    linear-gradient(158deg, var(--deep) 0%, var(--ink) 72%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(36, 64, 56, .40) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 64, 56, .40) 1px, transparent 1px);
  background-size: var(--faq-cell) var(--faq-cell);
  opacity: .55;
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: end;
  margin-top: clamp(22px, 4vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(29px, 5.4vw, 54px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--gray);
}

.page-faq .faq-hero__jump {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: rgba(18, 48, 41, .5);
  font-size: 13px;
  line-height: 1;
  letter-spacing: .01em;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--mint);
  color: var(--mint);
  background: var(--mint-soft);
}

/* 首屏右侧示意面板 */
.page-faq .faq-board {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 48, 41, .94), rgba(8, 13, 11, .96));
  box-shadow: 0 26px 60px -38px rgba(0, 0, 0, .95);
}

.page-faq .faq-board__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gray);
}

.page-faq .faq-board__bar .bs-num {
  margin-left: auto;
  color: var(--mint);
  font-size: 13px;
}

.page-faq .faq-board__score {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: clamp(44px, 9vw, 76px);
  font-weight: 700;
  line-height: 1;
  color: var(--mint);
}

.page-faq .faq-board__dash {
  font-size: .48em;
  color: var(--line);
}

.page-faq .faq-board__rows {
  display: grid;
}

.page-faq .faq-board__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--gray);
}

.page-faq .faq-board__row b {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--paper);
}

.page-faq .faq-board__chip {
  display: inline-block;
  width: 9px;
  height: 13px;
  margin-right: 8px;
  vertical-align: -2px;
  background: var(--yellow);
}

.page-faq .faq-board__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--gray);
}

.page-faq .faq-board__foot .bs-num {
  color: var(--orange);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-faq .faq-title {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-title--serif {
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: 0;
}

.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--deep), var(--ink));
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: linear-gradient(140deg, var(--deep), var(--ink));
}

.page-faq .faq-figure--steps img {
  aspect-ratio: 5 / 3;
}

.page-faq .faq-figure--band img {
  aspect-ratio: 5 / 2;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  line-height: 1.6;
  color: var(--gray);
}

/* ---------- 五步上手 ---------- */
.page-faq .faq-steps {
  background: linear-gradient(180deg, var(--ink) 0%, var(--deep) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-faq .faq-steps__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-step {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 48, 41, .55), rgba(8, 13, 11, .55));
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  border-color: var(--mint);
  background: linear-gradient(180deg, rgba(18, 48, 41, .92), rgba(8, 13, 11, .72));
  transform: translateY(-3px);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--mint);
}

.page-faq .faq-step__title {
  margin: 12px 0 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--gray);
}

.page-faq .faq-step__more {
  display: inline-block;
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(99, 255, 196, .38);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-step__more:hover,
.page-faq .faq-step__more:focus-visible {
  border-bottom-color: var(--mint);
  color: var(--paper);
}

/* ---------- 问答区 ---------- */
.page-faq .faq-qa {
  background: linear-gradient(180deg, var(--ink) 0%, var(--deep) 46%, var(--ink) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-qa__lead {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-qa__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 30px);
  margin-top: clamp(24px, 4vw, 42px);
}

.page-faq .faq-toc {
  padding: 14px 14px 8px;
  border: 1px solid var(--line);
  background: rgba(18, 48, 41, .48);
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 14px;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  line-height: 1.5;
  text-decoration: none;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--mint);
}

.page-faq .faq-toc__list .bs-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 4vw, 46px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--mint);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  color: var(--mint);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.page-faq .faq-item__icon::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .faq-item__icon::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--mint);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 0 18px;
  font-size: 14px;
  line-height: 1.82;
  color: var(--gray);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(99, 255, 196, .4);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  border-bottom-color: var(--mint);
  color: var(--paper);
}

/* ---------- 术语 ---------- */
.page-faq .faq-terms {
  background: var(--ink);
}

.page-faq .faq-terms__lead {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .faq-terms__list {
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-term {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-term dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mint);
}

.page-faq .faq-term dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 82% 10%, rgba(255, 107, 44, .10), transparent 60%),
    linear-gradient(150deg, var(--deep), var(--ink));
}

.page-faq .faq-cta__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-cta__text {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-cta__contact {
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(18, 48, 41, .6);
}

.page-faq .faq-cta__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .faq-cta__mail {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.1vw, 19px);
  line-height: 1.4;
  color: var(--mint);
  word-break: break-all;
}

.page-faq .faq-cta__meta {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 断点 ---------- */
@media (max-width: 640px) {
  .page-faq .faq-figure--band img {
    aspect-ratio: 16 / 9;
  }

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

  .page-faq .faq-board__score {
    font-size: clamp(40px, 13vw, 56px);
  }
}

@media (min-width: 720px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-term {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-steps__head {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
    gap: 32px;
  }

  .page-faq .faq-cta__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-faq .faq-qa__layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 92px;
  }

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

  .page-faq .faq-item__q {
    padding: 18px 0;
    font-size: 15.5px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-step {
    border: 0;
    border-left: 1px solid var(--line);
    background: transparent;
    padding: 22px 16px 26px;
  }

  .page-faq .faq-step:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-faq .faq-step:last-child {
    padding-right: 0;
  }

  .page-faq .faq-step:hover,
  .page-faq .faq-step:focus-within {
    border-left-color: var(--mint);
    background: var(--mint-soft);
    transform: translateY(-2px);
  }
}
<<<END>>>