.page-faq {
  --faq-rail-w: 264px;
  --faq-soft: #5A6472;
  --faq-paper-ink: #2B3542;
  background: var(--ink);
  color: var(--text);
}

.page-faq .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(20px, 3vw, 40px) clamp(40px, 6vw, 88px);
  background:
    radial-gradient(120% 90% at 92% 4%, rgba(34, 224, 200, 0.16), transparent 58%),
    radial-gradient(80% 70% at 0% 100%, rgba(47, 111, 181, 0.2), transparent 62%),
    var(--ink);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: #FFFFFF;
}

.page-faq .faq-hero__hl {
  display: inline-block;
  padding-bottom: 4px;
  color: var(--cyan);
  border-bottom: 2px solid rgba(34, 224, 200, 0.34);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

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

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
}

.page-faq .faq-hero__figure::before {
  content: "";
  position: absolute;
  inset: -6% 4% -8% 24%;
  z-index: 0;
  background: radial-gradient(closest-side, rgba(255, 107, 44, 0.22), transparent 72%);
  filter: blur(10px);
}

.page-faq .faq-hero__figure img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(60, 74, 90, 0.9);
  box-shadow: 0 26px 60px -30px rgba(0, 0, 0, 0.92);
}

.page-faq .faq-hero__figure figcaption {
  position: relative;
  z-index: 1;
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-faq .faq-hero__figure figcaption .num {
  color: var(--cyan);
}

/* ---------- 排查区 ---------- */
.page-faq .faq-body {
  position: relative;
  padding-block: clamp(36px, 6vw, 80px);
  background: var(--ink-2);
  border-top: 1px solid rgba(60, 74, 90, 0.6);
}

.page-faq .faq-body__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  pointer-events: none;
}

.page-faq .faq-body__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-rail {
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(60, 74, 90, 0.7);
  background: rgba(6, 8, 12, 0.72);
  backdrop-filter: blur(10px);
}

.page-faq .faq-rail__title {
  margin: 6px 0 16px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #FFFFFF;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-left: 2px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(34, 224, 200, 0.08);
  color: #FFFFFF;
}

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

.page-faq .faq-rail__n {
  min-width: 2ch;
  font-size: 15px;
  color: var(--cyan);
}

.page-faq .faq-rail__t {
  font-weight: 500;
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-group {
  position: relative;
  padding: clamp(20px, 3vw, 34px) clamp(16px, 3vw, 32px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(60, 74, 90, 0.6);
  background: linear-gradient(180deg, rgba(18, 28, 41, 0.94), rgba(13, 19, 28, 0.94));
  scroll-margin-top: 112px;
}

.page-faq .faq-group--paper {
  color: var(--ink-2);
  background: var(--paper);
  border-color: rgba(13, 19, 28, 0.14);
}

.page-faq .faq-group__head {
  margin-bottom: 8px;
}

.page-faq .faq-group__head::after {
  content: "";
  display: block;
  height: 1px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--line), transparent 78%);
  transform: rotate(-0.6deg);
  transform-origin: left center;
}

.page-faq .faq-group--paper .faq-group__head::after {
  background: linear-gradient(90deg, rgba(47, 111, 181, 0.55), transparent 78%);
}

.page-faq .faq-group__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-group--paper .faq-group__kicker {
  color: var(--porcelain);
}

.page-faq .faq-group__title {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(21px, 2.6vw, 27px);
  font-weight: 700;
  line-height: 1.36;
  color: #FFFFFF;
}

.page-faq .faq-group--paper .faq-group__title {
  color: var(--ink-2);
}

.page-faq .faq-group__meta {
  margin: 10px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-faq .faq-group__meta .num {
  color: var(--cyan);
  font-size: 14px;
}

.page-faq .faq-group--paper .faq-group__meta {
  color: var(--faq-soft);
}

.page-faq .faq-group--paper .faq-group__meta .num {
  color: var(--porcelain);
}

/* 折叠问答 */
.page-faq .faq-q {
  border-bottom: 1px solid rgba(60, 74, 90, 0.45);
}

.page-faq .faq-q:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-group--paper .faq-q {
  border-bottom-color: rgba(13, 19, 28, 0.12);
}

.page-faq .faq-q > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 16px 0 16px 14px;
  border-left: 2px solid var(--line);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

.page-faq .faq-q > summary::marker {
  content: "";
}

.page-faq .faq-q > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.25;
  color: var(--cyan);
  transition: color 0.2s ease;
}

.page-faq .faq-q > summary:hover {
  border-left-color: var(--cyan);
}

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

.page-faq .faq-q[open] > summary {
  border-left-color: var(--cyan);
  color: #FFFFFF;
}

.page-faq .faq-q[open] > summary::after {
  content: "–";
}

.page-faq .faq-group--paper .faq-q > summary {
  color: var(--ink-2);
  border-left-color: rgba(13, 19, 28, 0.18);
}

.page-faq .faq-group--paper .faq-q > summary:hover,
.page-faq .faq-group--paper .faq-q[open] > summary {
  border-left-color: var(--porcelain);
}

.page-faq .faq-group--paper .faq-q[open] > summary {
  color: var(--ink);
}

.page-faq .faq-group--paper .faq-q > summary::after {
  color: var(--porcelain);
}

.page-faq .faq-q__body {
  padding: 0 0 18px 14px;
}

.page-faq .faq-q__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-group--paper .faq-q__body p {
  color: var(--faq-paper-ink);
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-next {
  padding-block: clamp(40px, 6vw, 80px);
  background: var(--paper);
  color: var(--ink-2);
}

.page-faq .faq-next__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-next__card h2 {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1.32;
  color: var(--ink-2);
}

.page-faq .faq-next .eyebrow {
  color: var(--porcelain);
}

.page-faq .faq-next__lead {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-paper-ink);
}

.page-faq .faq-next__contacts {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-next__contacts li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(13, 19, 28, 0.12);
}

.page-faq .faq-next__k {
  min-width: 72px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--faq-soft);
}

.page-faq .faq-next__v {
  font-size: 15.5px;
  font-weight: 500;
  word-break: break-word;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-next .btn--ghost {
  color: var(--ink-2);
  border-color: rgba(13, 19, 28, 0.4);
}

.page-faq .faq-next .btn--ghost:hover {
  border-color: var(--porcelain);
  color: var(--porcelain);
}

.page-faq .faq-next__side h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--porcelain);
}

.page-faq .faq-next__side ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-next__side a {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  border: 1px solid rgba(47, 111, 181, 0.35);
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-2);
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-next__side a:hover,
.page-faq .faq-next__side a:focus-visible {
  border-color: var(--porcelain);
  background: rgba(47, 111, 181, 0.08);
}

.page-faq .faq-next__side a:focus-visible {
  outline: 2px solid var(--porcelain);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__actions {
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }

  .page-faq .faq-next__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body__inner {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 108px;
  }

  .page-faq .faq-group {
    padding: clamp(26px, 3vw, 38px) clamp(24px, 3vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-q > summary,
  .page-faq .faq-next__side a {
    transition: none;
  }

  .page-faq .faq-group__head::after {
    transform: none;
  }
}
<<<END>>>