.page-faq {
  --faq-gap: clamp(26px, 4vw, 62px);
  --faq-pad: clamp(30px, 5vw, 82px);
  --faq-line-paper: rgba(8, 17, 28, .14);
  --faq-line-strong: rgba(124, 141, 166, .42);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(30px, 5vw, 68px) 0 clamp(48px, 7vw, 106px);
  background:
    radial-gradient(66% 74% at 88% 4%, rgba(255, 90, 31, .24), transparent 62%),
    radial-gradient(52% 62% at 4% 96%, rgba(34, 224, 200, .16), transparent 66%),
    linear-gradient(152deg, var(--yb-deep) 0%, var(--yb-ink) 68%, #0c2439 100%);
  color: var(--yb-paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 42px), calc(100% - 50px) 100%, 0 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--yb-line-gold) 20%, var(--yb-line-gold) 74%, transparent);
}

.page-faq .faq-hero .yb-breadcrumb {
  margin-bottom: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero__kicker {
  color: var(--yb-sand);
  margin: 0 0 clamp(12px, 1.8vw, 20px);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--yb-font-body);
  font-size: clamp(34px, 7vw, 88px);
  font-weight: 250;
  line-height: 1.04;
  letter-spacing: -.026em;
  color: var(--yb-paper);
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.6vw, 32px) 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.85;
  color: var(--yb-on-dark);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 56px);
  margin: clamp(26px, 4vw, 48px) 0 0;
  padding: clamp(18px, 2.6vw, 30px) 0 0;
  border-top: 1px solid var(--faq-line-strong);
  list-style: none;
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-faq .faq-hero__stat b {
  font-family: var(--yb-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.6vw, 42px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--yb-cyan);
}

.page-faq .faq-hero__stat span {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--yb-on-dark-soft);
}

/* ---------- 分类导航 ---------- */
.page-faq .faq-index {
  padding: clamp(34px, 5.4vw, 88px) 0;
  background: var(--yb-paper);
  color: var(--yb-ink);
}

.page-faq .faq-index__title {
  margin: clamp(10px, 1.6vw, 18px) 0 0;
  font-size: clamp(26px, 4.2vw, 52px);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -.02em;
}

.page-faq .faq-index__lead {
  margin: clamp(12px, 1.8vw, 20px) 0 0;
  max-width: 56ch;
  font-size: clamp(14.5px, 1.4vw, 16.5px);
  line-height: 1.8;
  color: var(--yb-on-paper-soft);
}

.page-faq .faq-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(22px, 3.4vw, 44px);
  border: 1px solid var(--faq-line-paper);
  background: var(--faq-line-paper);
}

.page-faq .faq-index__card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 26px);
  align-items: start;
  padding: clamp(20px, 2.8vw, 34px);
  background: var(--yb-paper);
  color: inherit;
  text-decoration: none;
  transition: background-color .24s var(--yb-ease), color .24s var(--yb-ease);
}

.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  background: var(--yb-ink);
  color: var(--yb-paper);
}

.page-faq .faq-index__num {
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 600;
  color: var(--yb-lava);
  line-height: 1;
}

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

.page-faq .faq-index__body {
  display: block;
}

.page-faq .faq-index__name {
  display: block;
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-index__desc {
  display: block;
  margin-top: 8px;
  font-size: clamp(13.5px, 1.3vw, 15px);
  line-height: 1.75;
  color: var(--yb-on-paper-soft);
  transition: color .24s var(--yb-ease);
}

.page-faq .faq-index__card:hover .faq-index__desc,
.page-faq .faq-index__card:focus-visible .faq-index__desc {
  color: var(--yb-on-dark-soft);
}

/* ---------- 问答面板 ---------- */
.page-faq .faq-panel {
  padding: var(--faq-pad) 0;
}

.page-faq .faq-panel--paper {
  background: var(--yb-paper);
  color: var(--yb-ink);
}

.page-faq .faq-panel--paper + .faq-panel--paper {
  border-top: 1px solid var(--faq-line-paper);
}

.page-faq .faq-panel--ink {
  background: linear-gradient(154deg, var(--yb-deep) 0%, var(--yb-ink) 82%);
  color: var(--yb-paper);
  border-top: 1px solid var(--yb-line-gold);
}

.page-faq .faq-panel--ink + .faq-panel--ink {
  border-top: 1px solid var(--faq-line-strong);
}

.page-faq .faq-panel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-panel__side .yb-index {
  color: var(--yb-mist);
  margin: 0 0 clamp(10px, 1.6vw, 18px);
}

.page-faq .faq-panel--ink .faq-panel__side .yb-index {
  color: var(--yb-sand);
}

.page-faq .faq-panel__title {
  margin: 0;
  font-size: clamp(24px, 3.8vw, 44px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -.022em;
  max-width: 22ch;
}

.page-faq .faq-panel__note {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 48ch;
  font-size: clamp(14.5px, 1.4vw, 16px);
  line-height: 1.85;
  color: var(--yb-on-paper-soft);
}

.page-faq .faq-panel--ink .faq-panel__note {
  color: var(--yb-on-dark);
}

.page-faq .faq-figure {
  margin: clamp(22px, 3.2vw, 38px) 0 0;
}

.page-faq .faq-figure .yb-figure__media {
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 24px) 100%, 0 100%);
}

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

.page-faq .faq-figure .yb-figure__cap {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--yb-on-paper-soft);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--faq-line-paper);
}

.page-faq .faq-panel--ink .faq-list {
  border-top-color: var(--faq-line-strong);
}

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

.page-faq .faq-panel--ink .faq-item {
  border-bottom-color: var(--faq-line-strong);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 20px);
  align-items: start;
  padding: clamp(17px, 2.2vw, 26px) 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.5vw, 18px);
  font-weight: 600;
  line-height: 1.55;
  transition: color .22s var(--yb-ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible,
.page-faq .faq-item[open] .faq-item__q {
  color: var(--yb-lava-dark);
}

.page-faq .faq-panel--ink .faq-item__q:hover,
.page-faq .faq-panel--ink .faq-item__q:focus-visible,
.page-faq .faq-panel--ink .faq-item[open] .faq-item__q {
  color: var(--yb-cyan);
}

.page-faq .faq-item__caret {
  width: 0;
  height: 0;
  margin-top: 8px;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid var(--yb-sand);
  transform-origin: 50% 30%;
  transition: transform .24s var(--yb-ease), border-top-color .24s var(--yb-ease);
}

.page-faq .faq-item[open] .faq-item__caret {
  transform: rotate(-180deg);
  border-top-color: var(--yb-lava);
}

.page-faq .faq-panel--ink .faq-item[open] .faq-item__caret {
  border-top-color: var(--yb-cyan);
}

.page-faq .faq-item__text {
  display: block;
}

.page-faq .faq-item__a {
  padding: 0 0 clamp(18px, 2.6vw, 28px) clamp(22px, 2.8vw, 34px);
  max-width: 66ch;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: clamp(14.5px, 1.35vw, 16.5px);
  line-height: 1.9;
  color: var(--yb-on-paper);
}

.page-faq .faq-item__a p + p {
  margin-top: 12px;
}

.page-faq .faq-panel--ink .faq-item__a p {
  color: var(--yb-on-dark);
}

.page-faq .faq-item__a a {
  color: var(--yb-lava-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color .2s var(--yb-ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--yb-lava);
}

.page-faq .faq-panel--ink .faq-item__a a {
  color: var(--yb-cyan);
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: faq-answer-in .3s var(--yb-ease) both;
  }
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 反馈板 ---------- */
.page-faq .faq-feedback {
  padding: clamp(34px, 5.4vw, 82px) 0 clamp(38px, 5.6vw, 88px);
  background: linear-gradient(104deg, var(--yb-lava) 0%, var(--yb-lava-dark) 100%);
  color: var(--yb-ink);
}

.page-faq .faq-feedback__kicker {
  color: rgba(8, 17, 28, .66);
  margin: 0 0 clamp(10px, 1.6vw, 18px);
}

.page-faq .faq-feedback__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 58px);
}

.page-faq .faq-feedback__title {
  margin: 0;
  font-size: clamp(24px, 3.8vw, 46px);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -.022em;
  max-width: 20ch;
}

.page-faq .faq-feedback__steps {
  margin: clamp(22px, 3.2vw, 38px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(12px, 1.8vw, 18px);
}

.page-faq .faq-feedback__steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 20px);
  align-items: baseline;
  padding-top: clamp(11px, 1.4vw, 15px);
  border-top: 1px solid rgba(8, 17, 28, .32);
}

.page-faq .faq-feedback__num {
  font-size: 13px;
  font-weight: 700;
  color: rgba(8, 17, 28, .68);
}

.page-faq .faq-feedback__step {
  font-size: clamp(14.5px, 1.4vw, 16.5px);
  line-height: 1.8;
  color: var(--yb-ink);
}

.page-faq .faq-feedback__note {
  margin: 0;
  max-width: 44ch;
  font-size: clamp(14px, 1.35vw, 16px);
  line-height: 1.85;
  color: rgba(8, 17, 28, .78);
}

.page-faq .faq-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-feedback .yb-cta--solid {
  background: var(--yb-ink);
  border-color: var(--yb-ink);
  color: var(--yb-paper);
}

.page-faq .faq-feedback .yb-cta--solid:hover,
.page-faq .faq-feedback .yb-cta--solid:focus-visible {
  background: var(--yb-deep);
  border-color: var(--yb-paper);
  color: var(--yb-paper);
}

.page-faq .faq-feedback .yb-cta--ghost {
  border-color: rgba(8, 17, 28, .55);
  color: var(--yb-ink);
}

.page-faq .faq-feedback .yb-cta--ghost:hover,
.page-faq .faq-feedback .yb-cta--ghost:focus-visible {
  background: rgba(8, 17, 28, .1);
  border-color: var(--yb-ink);
  color: var(--yb-ink);
}

/* ---------- 锚点偏移与响应式 ---------- */
.page-faq .faq-index,
.page-faq .faq-panel,
.page-faq .faq-feedback {
  scroll-margin-top: 92px;
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-index__card,
  .page-faq .faq-item__q {
    scroll-behavior: smooth;
  }
}

@media (min-width: 680px) {
  .page-faq .faq-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-panel__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-panel__side {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-feedback__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-panel__grid {
    grid-template-columns: minmax(0, .76fr) minmax(0, 1.24fr);
  }
}

@media (max-width: 899px) {
  .page-faq .faq-hero {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 30px) 100%, 0 100%);
  }

  .page-faq .faq-panel__side {
    position: static;
  }

  .page-faq .faq-hero__title {
    max-width: 100%;
  }

  .page-faq .faq-item__a {
    padding-left: clamp(18px, 5vw, 26px);
  }
}
<<<END>>>