.page-faq {
  --faq-hero-grid: 64px;
  --faq-pad: clamp(18px, 4vw, 40px);
  color: var(--by-ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--by-indigo);
  color: var(--by-paper);
  padding: clamp(26px, 5vw, 52px) 0 clamp(34px, 6vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(247, 244, 237, .1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(247, 244, 237, .1) 1px, transparent 1px);
  background-size: var(--faq-hero-grid) var(--faq-hero-grid);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -30%;
  width: min(520px, 70vw);
  height: min(520px, 70vw);
  background: radial-gradient(circle, rgba(217, 153, 50, .34), rgba(217, 153, 50, 0) 68%);
  pointer-events: none;
}

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

.page-faq .faq-hero__crumbs {
  margin: 0 0 clamp(20px, 4vw, 34px);
  color: rgba(247, 244, 237, .66);
}

.page-faq .faq-hero__crumbs a {
  color: rgba(247, 244, 237, .66);
  text-decoration: none;
  border-bottom: 1px solid rgba(247, 244, 237, .34);
}

.page-faq .faq-hero__crumbs a:hover {
  color: var(--by-amber-light);
  border-bottom-color: var(--by-amber-light);
}

.page-faq .faq-hero__eyebrow {
  color: var(--by-amber-light);
  margin: 0 0 14px;
}

.page-faq .faq-hero__title {
  margin: 0 0 clamp(16px, 3vw, 24px);
  font-size: clamp(2.1rem, 7.6vw, 4.3rem);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -.02em;
  max-width: 18ch;
}

.page-faq .faq-hero__lede {
  max-width: 60ch;
  color: rgba(247, 244, 237, .82);
  font-size: clamp(1rem, 2.3vw, 1.12rem);
  line-height: 1.8;
  margin: 0 0 clamp(22px, 4vw, 34px);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 0;
  font-size: .9rem;
  color: rgba(247, 244, 237, .78);
}

.page-faq .faq-hero__meta li {
  padding: 0 18px;
  border-left: 1px solid rgba(247, 244, 237, .26);
}

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

.page-faq .faq-hero__meta .by-mono {
  color: var(--by-amber-light);
  font-weight: 600;
}

/* ---------- 快速定位 ---------- */
.page-faq .faq-quick {
  padding-top: clamp(36px, 6vw, 68px);
  padding-bottom: clamp(20px, 4vw, 36px);
}

.page-faq .faq-quick__head {
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-faq .faq-quick__head .by-lede {
  margin-top: 10px;
  max-width: 62ch;
}

.page-faq .faq-quick__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-jump {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "icon num count"
    "title title title"
    "desc desc desc";
  gap: 8px 12px;
  align-items: center;
  padding: 18px 18px 20px;
  background: var(--by-paper);
  border: 2px solid var(--by-ink);
  border-radius: var(--by-radius);
  box-shadow: var(--by-shadow-card);
  text-decoration: none;
  color: var(--by-ink);
  transition: transform .22s var(--by-ease), box-shadow .22s var(--by-ease), background-color .22s var(--by-ease);
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  transform: translate(-3px, -3px);
  box-shadow: 11px 11px 0 rgba(27, 42, 91, .2);
  background: var(--by-mist);
}

.page-faq .faq-jump__icon {
  grid-area: icon;
  display: inline-flex;
  color: var(--by-indigo);
}

.page-faq .faq-jump__num {
  grid-area: num;
  font-size: .82rem;
  color: var(--by-celadon);
  font-weight: 600;
  letter-spacing: .08em;
}

.page-faq .faq-jump__count {
  grid-area: count;
  font-size: .78rem;
  color: var(--by-indigo);
  background: var(--by-amber-light);
  padding: 3px 9px;
  border-radius: var(--by-radius);
  border: 1px solid rgba(20, 22, 28, .2);
  white-space: nowrap;
}

.page-faq .faq-jump__title {
  grid-area: title;
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-faq .faq-jump__desc {
  grid-area: desc;
  font-size: .92rem;
  line-height: 1.7;
  color: rgba(20, 22, 28, .72);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: block;
  padding-top: clamp(24px, 4vw, 40px);
  padding-bottom: clamp(36px, 6vw, 64px);
}

.page-faq .faq-aside {
  border: 2px solid var(--by-ink);
  border-radius: var(--by-radius);
  background: var(--by-mist);
  padding: 16px 16px 18px;
  margin-bottom: 26px;
}

.page-faq .faq-aside__label {
  margin: 0 0 12px;
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--by-indigo);
  text-transform: uppercase;
}

.page-faq .faq-aside__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-aside__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 8px;
  color: var(--by-ink);
  text-decoration: none;
  font-size: .95rem;
  font-weight: 600;
  border-left: 3px solid transparent;
  transition: background-color .18s var(--by-ease), border-color .18s var(--by-ease), color .18s var(--by-ease);
}

.page-faq .faq-aside__list a .by-mono {
  font-size: .78rem;
  color: var(--by-celadon);
  font-weight: 600;
}

.page-faq .faq-aside__list a:hover,
.page-faq .faq-aside__list a:focus-visible {
  background: var(--by-paper);
  border-left-color: var(--by-amber);
  color: var(--by-indigo);
}

.page-faq .faq-aside__note {
  margin: 0;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(20, 22, 28, .7);
  padding-top: 12px;
  border-top: 1px solid var(--by-line);
}

.page-faq .faq-aside__note a {
  color: var(--by-indigo);
  text-decoration: none;
  border-bottom: 1px solid var(--by-amber);
}

/* ---------- 问答区块 ---------- */
.page-faq .faq-block {
  margin-bottom: clamp(38px, 6vw, 62px);
  scroll-margin-top: 80px;
}

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

.page-faq .faq-block__head {
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 3px solid var(--by-ink);
}

.page-faq .faq-block__title {
  margin: 8px 0 10px;
  font-size: clamp(1.45rem, 4.4vw, 2.1rem);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-faq .faq-block__head .by-lede {
  margin: 0;
  max-width: 64ch;
  font-size: .98rem;
}

.page-faq .faq-acc {
  border-top: 1px solid var(--by-line);
}

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

.page-faq .faq-acc .by-acc__trigger {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 15px 12px;
  background: transparent;
  border: 0;
  border-radius: 0;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--by-ink);
  text-align: left;
  cursor: pointer;
  transition: background-color .18s var(--by-ease), color .18s var(--by-ease);
}

.page-faq .faq-acc .by-acc__trigger:hover {
  background: var(--by-mist);
}

.page-faq .faq-acc .by-acc__trigger:focus-visible {
  outline: 2px solid var(--by-indigo);
  outline-offset: -3px;
}

.page-faq .faq-acc .by-acc__trigger[aria-expanded="true"] {
  background: var(--by-mist);
  color: var(--by-indigo);
}

.page-faq .faq-q__num {
  flex: 0 0 auto;
  font-size: .8rem;
  font-weight: 600;
  color: var(--by-amber);
  padding-top: 3px;
  letter-spacing: .04em;
}

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

.page-faq .faq-acc .by-acc__icon {
  flex: 0 0 auto;
  color: var(--by-celadon);
}

.page-faq .faq-acc .by-acc__panel {
  padding: 2px 12px 18px 42px;
}

.page-faq .faq-acc .by-acc__panel p {
  margin: 0 0 10px;
  font-size: .96rem;
  line-height: 1.78;
  color: rgba(20, 22, 28, .84);
  max-width: 66ch;
}

.page-faq .faq-acc .by-acc__panel p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-acc .by-acc__panel a {
  color: var(--by-indigo);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--by-amber);
}

.page-faq .faq-acc .by-acc__panel a:hover {
  background: var(--by-amber-light);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(22px, 4vw, 32px);
}

.page-faq .faq-figure .by-figure__frame {
  border: 2px solid var(--by-ink);
  border-radius: var(--by-radius);
  box-shadow: var(--by-shadow-card);
  overflow: hidden;
  background: var(--by-mist);
}

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

.page-faq .faq-figure .by-figure__caption {
  margin-top: 10px;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(20, 22, 28, .66);
}

/* ---------- 时间线 ---------- */
.page-faq .faq-timeline {
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 34px);
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-timeline__item {
  position: relative;
  padding: 0 0 22px 32px;
  border-left: 2px solid var(--by-mist);
}

.page-faq .faq-timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-faq .faq-timeline__dot {
  position: absolute;
  left: -9px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--by-celadon);
  border: 3px solid var(--by-paper);
  box-shadow: 0 0 0 2px var(--by-celadon-light);
}

.page-faq .faq-timeline__stage {
  margin: 0 0 2px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--by-indigo);
}

.page-faq .faq-timeline__time {
  margin: 0 0 6px;
  font-size: .82rem;
  color: var(--by-amber);
  font-weight: 600;
  letter-spacing: .02em;
}

.page-faq .faq-timeline__desc {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: rgba(20, 22, 28, .78);
  max-width: 60ch;
}

/* ---------- 双标签 ---------- */
.page-faq .faq-tabs {
  position: relative;
  border: 2px solid var(--by-ink);
  border-radius: var(--by-radius);
  background: var(--by-paper);
  box-shadow: var(--by-shadow-card);
  overflow: hidden;
}

.page-faq .faq-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-tabs__bar {
  display: flex;
  border-bottom: 2px solid var(--by-ink);
  background: var(--by-mist);
}

.page-faq .faq-tabs__tab {
  flex: 1 1 50%;
  display: block;
  padding: 14px 10px;
  text-align: center;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .01em;
  color: var(--by-indigo);
  cursor: pointer;
  transition: background-color .2s var(--by-ease), color .2s var(--by-ease), box-shadow .2s var(--by-ease);
}

.page-faq .faq-tabs__tab + .faq-tabs__tab {
  border-left: 2px solid var(--by-ink);
}

.page-faq .faq-tabs__tab:hover {
  background: var(--by-paper);
}

.page-faq #faq-tab-promise:checked ~ .faq-tabs__bar label[for="faq-tab-promise"],
.page-faq #faq-tab-review:checked ~ .faq-tabs__bar label[for="faq-tab-review"] {
  background: var(--by-indigo);
  color: var(--by-paper);
  box-shadow: inset 0 -5px 0 var(--by-amber);
}

.page-faq #faq-tab-promise:focus-visible ~ .faq-tabs__bar label[for="faq-tab-promise"],
.page-faq #faq-tab-review:focus-visible ~ .faq-tabs__bar label[for="faq-tab-review"] {
  outline: 2px solid var(--by-amber);
  outline-offset: -6px;
}

.page-faq #faq-tab-promise:checked ~ .faq-tabs__panels .faq-tabs__panel[data-panel="review"],
.page-faq #faq-tab-review:checked ~ .faq-tabs__panels .faq-tabs__panel[data-panel="promise"] {
  display: none;
}

.page-faq .faq-tabs__panel {
  padding: 20px 18px 18px;
}

.page-faq .faq-tabs__foot {
  margin: 16px 0 0;
  font-size: .86rem;
  line-height: 1.72;
  color: rgba(20, 22, 28, .68);
  padding-top: 12px;
  border-top: 1px dashed var(--by-line-strong);
}

.page-faq .faq-tabs__foot a {
  color: var(--by-indigo);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--by-amber);
}

/* 承诺条款 */
.page-faq .faq-promise {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-promise__item {
  padding: 14px 0;
  border-bottom: 2px solid var(--by-ink);
}

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

.page-faq .faq-promise__no {
  margin: 0 0 4px;
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--by-amber);
  font-weight: 600;
}

.page-faq .faq-promise__text {
  margin: 0;
  font-size: .96rem;
  line-height: 1.76;
  color: rgba(20, 22, 28, .86);
  max-width: 64ch;
}

/* 评价反馈 */
.page-faq .faq-review__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-review {
  border: 2px solid var(--by-line-strong);
  border-left: 4px solid var(--by-celadon);
  border-radius: var(--by-radius);
  background: var(--by-mist);
  padding: 14px 14px 16px;
}

.page-faq .faq-review .by-tag {
  display: inline-block;
  margin: 0 0 8px;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.page-faq .faq-review__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.74;
  color: rgba(20, 22, 28, .84);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  background: var(--by-amber-light);
  border-top: 3px solid var(--by-ink);
  border-bottom: 3px solid var(--by-ink);
  padding: clamp(30px, 5vw, 58px) 0;
  color: var(--by-indigo);
}

.page-faq .faq-contact__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  align-items: start;
}

.page-faq .faq-contact .by-eyebrow {
  color: var(--by-indigo);
  margin: 0 0 10px;
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 4.6vw, 2.2rem);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-faq .faq-contact__lede {
  margin: 0 0 18px;
  font-size: .98rem;
  line-height: 1.78;
  color: rgba(14, 24, 56, .86);
  max-width: 58ch;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  font-size: .93rem;
  line-height: 1.7;
  color: rgba(14, 24, 56, .92);
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(27, 42, 91, .22);
}

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

.page-faq .faq-contact__list .by-mono {
  font-weight: 700;
  font-size: .8rem;
  color: var(--by-indigo);
  padding-top: 2px;
}

.page-faq .faq-contact__card {
  background: var(--by-paper);
  border: 2px solid var(--by-ink);
  border-radius: var(--by-radius);
  box-shadow: var(--by-shadow-card);
  padding: 20px 18px 22px;
}

.page-faq .faq-contact__cardlabel {
  margin: 0 0 14px;
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--by-celadon);
  font-weight: 700;
}

.page-faq .faq-contact__kv {
  margin: 0 0 16px;
}

.page-faq .faq-contact__kv div {
  padding: 9px 0;
  border-bottom: 1px solid var(--by-line);
}

.page-faq .faq-contact__kv div:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__kv dt {
  font-size: .78rem;
  letter-spacing: .06em;
  color: rgba(20, 22, 28, .6);
  margin-bottom: 3px;
}

.page-faq .faq-contact__kv dd {
  margin: 0;
  font-size: .94rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--by-ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  margin: 0 0 16px;
  font-size: .84rem;
  line-height: 1.72;
  color: rgba(20, 22, 28, .7);
  padding-top: 12px;
  border-top: 1px dashed var(--by-line-strong);
}

.page-faq .faq-contact__btn {
  width: 100%;
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-review__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-tabs__panel {
    padding: 24px 24px 20px;
  }

  .page-faq .faq-contact__btn {
    width: auto;
    display: inline-block;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__title {
    font-size: clamp(3rem, 5.4vw, 4.3rem);
  }

  .page-faq .faq-body {
    display: grid;
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 24px;
    margin-bottom: 0;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-faq .faq-timeline__item {
    padding-left: 36px;
  }

  .page-faq .faq-acc .by-acc__trigger {
    padding: 17px 16px;
    font-size: 1.04rem;
  }

  .page-faq .faq-acc .by-acc__panel {
    padding-left: 58px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump,
  .page-faq .faq-aside__list a,
  .page-faq .faq-acc .by-acc__trigger,
  .page-faq .faq-tabs__tab {
    transition: none;
  }

  .page-faq .faq-jump:hover,
  .page-faq .faq-jump:focus-visible {
    transform: none;
  }
}
<<<END>>>