.page-faq {
  --faq-panel: rgba(12, 21, 51, 0.78);
  --faq-panel-soft: rgba(36, 27, 77, 0.5);
  --faq-shadow: 6px 6px 0 rgba(7, 11, 26, 0.85);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumb {
  padding-block: 18px 6px;
}

/* ---------- 首屏 ---------- */
.page-faq .guide-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 5vw, 56px) clamp(36px, 6vw, 72px);
  border-top: 1px solid var(--grid-line);
  border-bottom: var(--edge);
  background:
    repeating-linear-gradient(0deg, var(--grid-line) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 64px),
    var(--void);
}

.page-faq .guide-hero::before {
  content: "";
  position: absolute;
  inset: -20% -12% auto -12%;
  height: 130%;
  background:
    linear-gradient(118deg, rgba(56, 242, 208, 0.14) 0%, rgba(56, 242, 208, 0) 52%),
    linear-gradient(300deg, rgba(255, 106, 43, 0.16) 0%, rgba(255, 106, 43, 0) 48%),
    linear-gradient(160deg, var(--deep) 0%, rgba(36, 27, 77, 0.6) 70%);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 0 100%);
  pointer-events: none;
}

.page-faq .guide-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-faq .guide-hero__copy .eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  letter-spacing: 0.14em;
}

.page-faq .guide-hero__copy .display {
  margin: 0 0 18px;
  font-size: clamp(2rem, 6.4vw, 3.9rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.page-faq .guide-hero__copy .lede {
  margin: 0;
  max-width: 56ch;
  color: var(--star);
  font-size: clamp(0.98rem, 2.4vw, 1.0625rem);
  line-height: 1.85;
}

.page-faq .guide-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-figure {
  margin: 0;
  border: var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(59, 46, 115, 0.4) 0 10px, rgba(12, 21, 51, 0.65) 10px 20px);
  box-shadow: var(--faq-shadow);
}

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

.page-faq .guide-hero__figure {
  position: relative;
  border-color: var(--haze);
}

.page-faq .guide-hero__figure::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 62%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

/* ---------- 三步流程 ---------- */
.page-faq .flow {
  position: relative;
  list-style: none;
  margin: clamp(28px, 5vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .flow__step {
  position: relative;
  padding: 20px 18px 22px;
  border: var(--edge);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--faq-panel-soft), var(--faq-panel));
  box-shadow: var(--faq-shadow);
}

.page-faq .flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 72px;
  height: 3px;
  background: var(--cyan);
}

.page-faq .flow__num {
  display: block;
  margin-bottom: 10px;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .flow__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--fog);
}

.page-faq .flow__text {
  margin: 0;
  color: var(--star);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- 主体两栏 ---------- */
.page-faq .guide-body {
  display: grid;
  gap: 26px;
  margin-top: clamp(32px, 5vw, 64px);
}

.page-faq .guide-nav {
  position: sticky;
  top: 58px;
  z-index: 6;
  padding: 10px 0 8px;
  background: rgba(7, 11, 26, 0.94);
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .guide-nav__title {
  margin: 0 0 8px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--star);
}

.page-faq .guide-nav__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .guide-nav__item {
  flex: 0 0 auto;
}

.page-faq .guide-nav__link {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--haze);
  border-radius: var(--radius);
  background: var(--faq-panel);
  color: var(--fog);
  font-size: 0.875rem;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}

.page-faq .guide-nav__link:hover,
.page-faq .guide-nav__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(56, 242, 208, 0.12);
  color: var(--cyan);
  outline: none;
}

.page-faq .guide-nav__note {
  display: none;
  margin: 18px 0 0;
  color: var(--star);
  font-size: 0.8125rem;
  line-height: 1.75;
}

/* ---------- 问答区块 ---------- */
.page-faq .guide-main {
  min-width: 0;
  display: grid;
  gap: clamp(32px, 5vw, 56px);
}

.page-faq .guide-section {
  scroll-margin-top: 130px;
}

.page-faq .guide-section__head {
  border-left: 3px solid var(--haze);
  padding-left: 16px;
  margin-bottom: 22px;
}

.page-faq .guide-section__kicker {
  margin: 0 0 8px;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .guide-section__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.6vw, 1.875rem);
  font-weight: 800;
  line-height: 1.28;
  color: var(--fog);
}

.page-faq .guide-section__lede {
  margin: 0;
  max-width: 62ch;
  color: var(--star);
  font-size: 0.9688rem;
  line-height: 1.85;
}

.page-faq .hint-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .hint-list__item {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  background: var(--faq-panel);
  color: var(--star);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .hint-list__mark {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 10px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-figure--inline {
  margin-bottom: 22px;
}

.page-faq .faq-figure__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--grid-line);
  background: var(--deep);
  color: var(--star);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: var(--edge);
  border-left: 3px solid var(--haze);
  border-radius: var(--radius);
  background: var(--faq-panel);
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-faq .faq-item--sync {
  border-left-color: var(--cyan);
}

.page-faq .faq-item--data {
  border-left-color: var(--warn);
}

.page-faq .faq-item--file {
  border-left-color: var(--star);
}

.page-faq .faq-item--feed {
  border-left-color: var(--orange);
}

.page-faq .faq-item[open] {
  background: rgba(36, 27, 77, 0.55);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--fog);
}

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

.page-faq .faq-q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--cyan);
  transition: transform 180ms ease, color 180ms ease;
}

.page-faq .faq-item[open] .faq-q::after {
  content: "−";
  color: var(--orange);
}

.page-faq .faq-q:hover::after,
.page-faq .faq-q:focus-visible::after {
  transform: rotate(90deg);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-a {
  padding: 0 16px 18px;
  max-width: 60ch;
  color: var(--star);
  font-size: 0.9375rem;
  line-height: 1.85;
}

/* ---------- 兜底联系 ---------- */
.page-faq .guide-help {
  scroll-margin-top: 130px;
  display: grid;
  gap: 22px;
  padding: clamp(24px, 4vw, 36px);
  border: var(--edge);
  border-radius: var(--radius);
  background:
    linear-gradient(150deg, rgba(56, 242, 208, 0.1) 0%, rgba(56, 242, 208, 0) 46%),
    linear-gradient(320deg, rgba(255, 106, 43, 0.14) 0%, rgba(255, 106, 43, 0) 50%),
    var(--deep);
  box-shadow: var(--faq-shadow);
}

.page-faq .guide-help__kicker {
  margin: 0 0 10px;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .guide-help__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.4vw, 1.75rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--fog);
}

.page-faq .guide-help__text {
  margin: 0;
  max-width: 58ch;
  color: var(--star);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-faq .guide-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

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

.page-faq .contact-mini__item {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  background: rgba(7, 11, 26, 0.6);
}

.page-faq .contact-mini__label {
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--star);
}

.page-faq .contact-mini__value {
  color: var(--fog);
  font-size: 0.9375rem;
  line-height: 1.7;
  word-break: break-word;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-faq .guide-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-faq .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 36px;
    right: -22px;
    width: 22px;
    height: 2px;
    background: var(--cyan);
    opacity: 0.85;
  }

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

  .page-faq .contact-mini__item--wide {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面：左导航 + 右问答 ---------- */
@media (min-width: 1000px) {
  .page-faq .guide-body {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-faq .guide-nav {
    position: sticky;
    top: 92px;
    padding: 0;
    background: transparent;
    border-bottom: 0;
  }

  .page-faq .guide-nav__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .guide-nav__item {
    flex: 1 1 auto;
  }

  .page-faq .guide-nav__link {
    display: block;
    padding: 11px 14px;
    white-space: normal;
    font-size: 0.9375rem;
  }

  .page-faq .guide-nav__note {
    display: block;
  }

  .page-faq .guide-section {
    scroll-margin-top: 110px;
  }

  .page-faq .guide-help {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 32px;
  }

  .page-faq .faq-q {
    padding: 18px 20px;
    font-size: 1.0625rem;
  }

  .page-faq .faq-a {
    padding: 0 20px 20px;
    font-size: 0.9688rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q::after,
  .page-faq .guide-nav__link,
  .page-faq .faq-item {
    transition: none;
  }
}
<<<END>>>