.page-faq {
  --faq-grid-bg:
    repeating-linear-gradient(0deg, rgba(16, 26, 23, 0.045) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, rgba(16, 26, 23, 0.045) 0 1px, transparent 1px 26px);
  --faq-hero-top: clamp(6.25rem, 13vw, 10rem);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: var(--faq-hero-top) clamp(2rem, 5vw, 3.5rem);
  background:
    linear-gradient(180deg, var(--snow) 0%, var(--paper) 78%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  width: min(52%, 560px);
  background:
    linear-gradient(165deg, rgba(46, 111, 142, 0.12) 0%, rgba(143, 191, 106, 0.09) 48%, rgba(201, 139, 46, 0.07) 100%);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--body-soft);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-hero__text {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(1rem, 0.4vw + 0.92rem, 1.1rem);
  line-height: 1.85;
  color: var(--body-soft);
}

.page-faq .faq-hero h1 {
  margin: 0.55rem 0 1.15rem;
  font-family: var(--font-serif);
  font-size: clamp(1.95rem, 5.4vw, 3.3rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.012em;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.4rem, 3vw, 1.9rem);
}

.page-faq .faq-hero__panel {
  position: relative;
  padding: clamp(1.35rem, 3vw, 2rem);
  background: var(--ink-green);
  color: var(--snow);
  overflow: hidden;
}

.page-faq .faq-hero__panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(28, 58, 51, 0.55) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(90deg, rgba(28, 58, 51, 0.55) 0 1px, transparent 1px 34px);
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-hero__panel-title {
  position: relative;
  z-index: 1;
  margin: 0 0 1rem;
  font-size: 0.76rem;
  letter-spacing: 0.09em;
  color: var(--winter);
}

.page-faq .faq-hero__list {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__list li + li {
  border-top: 1px solid var(--line-invert);
}

.page-faq .faq-hero__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.85rem;
  padding-block: 0.85rem;
  color: var(--snow);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.6;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-hero__num {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--autumn);
}

.page-faq .faq-hero__arrow {
  font-size: 0.9rem;
  color: var(--winter);
}

.page-faq .faq-hero__note {
  position: relative;
  z-index: 1;
  margin: 1.1rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-invert);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: rgba(251, 251, 248, 0.68);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
}

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

.page-faq .faq-steps__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-step {
  display: grid;
  align-content: start;
  gap: 0.65rem;
  padding: clamp(1.15rem, 2.6vw, 1.7rem);
  background: var(--snow);
  min-width: 0;
}

.page-faq .faq-step__num {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.page-faq .faq-step--spring .faq-step__num { background: var(--spring); }
.page-faq .faq-step--summer .faq-step__num { background: var(--summer); color: var(--snow); }
.page-faq .faq-step--autumn .faq-step__num { background: var(--autumn); }

.page-faq .faq-step__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.14rem;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.82;
  color: var(--body-soft);
}

.page-faq .faq-step__path {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--summer);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  justify-self: start;
  padding-bottom: 1px;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-step__path:hover,
.page-faq .faq-step__path:focus-visible {
  border-color: var(--summer);
}

/* ---------- 分组导航 ---------- */
.page-faq .faq-groups {
  border-top: 1px solid var(--line);
}

.page-faq .faq-groups__head {
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.page-faq .faq-jump {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.6rem;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__link {
  flex: none;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-bottom: 2px solid transparent;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-jump__link:first-child {
  border-bottom-color: var(--autumn);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--summer);
  border-bottom-color: var(--autumn);
}

/* ---------- 问答 ---------- */
.page-faq .faq-answers__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-answers__main {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 7rem;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--line-strong);
  font-family: var(--font-serif);
  font-size: clamp(1.12rem, 1.6vw, 1.38rem);
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-group__title::before {
  content: "";
  flex: none;
  width: 0.52rem;
  height: 0.52rem;
  transform: translateY(-0.1rem);
  background: var(--spring);
}

.page-faq .faq-group--summer .faq-group__title::before { background: var(--summer); }
.page-faq .faq-group--autumn .faq-group__title::before { background: var(--autumn); }
.page-faq .faq-group--winter .faq-group__title::before { background: var(--winter); }
.page-faq .faq-group--vermilion .faq-group__title::before { background: var(--vermilion); }

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

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-block: 0.9rem;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--summer);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
}

.page-faq .faq-item__q:hover {
  color: var(--summer);
}

.page-faq .faq-item__a {
  padding: 0.15rem 0 1.3rem;
  font-size: 0.94rem;
  line-height: 1.95;
  color: var(--body-soft);
}

.page-faq .faq-item[open] .faq-item__a {
  background-image: var(--faq-grid-bg);
  background-position: 0 0;
}

.page-faq .faq-item__a p {
  margin: 0 0 0.75rem;
}

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

.page-faq .faq-item__a strong {
  color: var(--ink);
  font-weight: 600;
}

.page-faq .faq-item__a a {
  color: var(--summer);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 右侧旁注 ---------- */
.page-faq .faq-answers__rail {
  display: grid;
  align-content: start;
  gap: 1.15rem;
}

.page-faq .faq-rail-figure {
  margin: 0;
}

.page-faq .faq-rail-card {
  padding: clamp(1.1rem, 2.4vw, 1.45rem);
  background: var(--snow);
  border: 1px solid var(--line);
}

.page-faq .faq-rail-card__title {
  margin: 0 0 0.8rem;
  font-size: 0.74rem;
  letter-spacing: 0.09em;
  color: var(--summer);
}

.page-faq .faq-rail-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--body-soft);
}

.page-faq .faq-rail-list li {
  padding-block: 0.45rem;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-rail-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-rail-card--dark {
  background: var(--ink-green);
  border-color: var(--ink-green);
  color: var(--snow);
}

.page-faq .faq-rail-card--dark .faq-rail-card__title {
  color: var(--spring);
}

.page-faq .faq-rail-card__text {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(251, 251, 248, 0.78);
}

/* ---------- 企业支持 ---------- */
.page-faq .faq-enterprise {
  background: var(--ink-green);
  color: var(--snow);
  padding-block: clamp(2.75rem, 6vw, 5rem);
}

.page-faq .faq-enterprise__inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-enterprise__title {
  color: var(--snow);
  margin-block: 0.5rem 1rem;
}

.page-faq .faq-enterprise .eyebrow {
  color: var(--autumn);
}

.page-faq .faq-enterprise__text {
  max-width: 44ch;
  margin: 0 0 1.5rem;
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(251, 251, 248, 0.78);
}

.page-faq .faq-enterprise__list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-enterprise__item {
  display: grid;
  gap: 0.35rem;
  padding-block: 1rem;
  border-top: 1px solid var(--line-invert);
}

.page-faq .faq-enterprise__item dt {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--winter);
}

.page-faq .faq-enterprise__item dd {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(251, 251, 248, 0.86);
}

/* ---------- 渠道 ---------- */
.page-faq .faq-channels {
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

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

.page-faq .faq-channel {
  display: grid;
  gap: 0.45rem;
  padding-block: 1.15rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-channel__label {
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--autumn);
}

.page-faq .faq-channel__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--body-soft);
}

.page-faq .faq-channel__text strong {
  color: var(--ink);
  font-weight: 600;
}

.page-faq .faq-channel__link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--summer);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-channel__link:hover,
.page-faq .faq-channel__link:focus-visible {
  border-color: var(--summer);
}

.page-faq .faq-more {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.6rem;
  margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
  font-size: 0.9rem;
}

.page-faq .faq-more a {
  color: var(--summer);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  border-color: var(--summer);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-enterprise__item {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 1.25rem;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-channel {
    grid-template-columns: 6.5rem minmax(0, 1fr) auto;
    gap: 1.5rem;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.86fr);
    align-items: start;
  }

  .page-faq .faq-hero__panel {
    margin-top: 1.75rem;
  }

  .page-faq .faq-enterprise__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-answers__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-answers__rail {
    position: sticky;
    top: 6.5rem;
  }

  .page-faq .faq-item__q {
    padding-block: 0.95rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__list a,
  .page-faq .faq-jump__link,
  .page-faq .faq-step__path,
  .page-faq .faq-channel__link {
    transition: none;
  }
}
<<<END>>>