.page-faq {
  --faq-pad: clamp(18px, 3vw, 34px);
  --faq-gap: clamp(20px, 3.2vw, 40px);
  display: block;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq h1,
.page-faq h2 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
}

.page-faq a {
  color: inherit;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(26px, 4vw, 48px) clamp(38px, 6vw, 84px);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 90% at 90% 6%, rgba(53, 224, 208, 0.16), transparent 60%),
    radial-gradient(90% 70% at 4% 96%, rgba(255, 122, 69, 0.12), transparent 62%),
    linear-gradient(180deg, var(--ink-950), var(--ink-900));
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-faq .faq-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: saturate(0.55) contrast(1.1);
}

.page-faq .faq-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 17, 31, 0.5), rgba(7, 17, 31, 0.94) 78%);
}

.page-faq .faq-hero__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2vw, 22px);
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
}

.page-faq .crumbs a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-hero h1 {
  font-size: clamp(30px, 6.4vw, 82px);
  font-weight: 900;
  max-width: 15em;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--paper-dim);
}

.page-faq .faq-hero__stats li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding-right: 26px;
  border-right: 1px solid var(--line-soft);
}

.page-faq .faq-hero__stats li:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-faq .faq-hero__stats .num {
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 快速排查路径 ---------- */
.page-faq .faq-path {
  padding-block: clamp(38px, 6vw, 76px);
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-path__head {
  max-width: 70ch;
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-path__head h2 {
  font-size: clamp(24px, 3.6vw, 44px);
  font-weight: 800;
  margin: 6px 0 12px;
}

.page-faq .faq-path__lead {
  margin: 0;
  color: var(--paper-dim);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-path__grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-path__figure {
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-950));
  padding: var(--faq-pad);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-path__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .fp-line {
  stroke: var(--line);
  stroke-width: 1.5;
  stroke-dasharray: 5 5;
}

.page-faq .fp-node rect {
  fill: var(--ink-700);
  stroke: var(--line);
  stroke-width: 1;
}

.page-faq .fp-node text {
  fill: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 600;
  text-anchor: middle;
}

.page-faq .fp-node--end rect {
  fill: rgba(255, 122, 69, 0.14);
  stroke: var(--orange);
}

.page-faq .fp-node--end text {
  fill: var(--orange);
}

.page-faq .faq-path__caption {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--paper-dim);
}

.page-faq .faq-path__links {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  align-content: start;
}

.page-faq .faq-path__link {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 14px;
  padding: 15px 18px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--line);
  background: var(--ink-800);
  text-decoration: none;
  transition: border-color var(--dur) ease, background-color var(--dur) ease,
    transform var(--dur) ease;
}

.page-faq .faq-path__link:hover,
.page-faq .faq-path__link:focus-visible {
  border-color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--ink-700);
  transform: translateX(3px);
}

.page-faq .faq-path__no {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.6;
}

.page-faq .faq-path__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-path__body strong {
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-path__body span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-dim);
}

/* ---------- 目录 + 问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 3.4vw, 48px);
  padding-block: clamp(36px, 6vw, 76px);
}

.page-faq .faq-toc {
  border: 1px solid var(--line-soft);
  background: var(--ink-800);
  padding: 18px 20px;
  align-self: start;
}

.page-faq .faq-toc__list {
  margin: 12px 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  font-size: 14px;
  text-decoration: none;
  color: var(--paper-dim);
  border-bottom: 1px solid rgba(36, 68, 95, 0.35);
  transition: color var(--dur) ease;
}

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

.page-faq .faq-toc__list .num {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.05em;
}

.page-faq .faq-toc__readout {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--paper-dim);
}

.page-faq .faq-toc__readout span {
  color: var(--cyan);
}

.page-faq .faq-toc__jump {
  width: 100%;
  justify-content: center;
}

.page-faq .faq-body {
  display: grid;
  gap: clamp(20px, 2.6vw, 32px);
  min-width: 0;
}

.page-faq .faq-group {
  border: 1px solid var(--line-soft);
  background: linear-gradient(170deg, var(--ink-800), var(--ink-950));
  padding: var(--faq-pad);
  box-shadow: var(--shadow-panel);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group--contact {
  border-color: rgba(255, 122, 69, 0.4);
  background: linear-gradient(170deg, rgba(255, 122, 69, 0.09), var(--ink-950) 62%);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 14px;
  padding-bottom: 16px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  opacity: 0.9;
}

.page-faq .faq-group__head h2 {
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 800;
}

.page-faq .faq-group__head p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-faq .qa {
  border-bottom: 1px solid rgba(36, 68, 95, 0.45);
}

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

.page-faq .qa > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) ease;
}

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

.page-faq .qa > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

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

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--cyan);
}

.page-faq .qa__no {
  flex: none;
  font-size: 12px;
  color: var(--orange);
  line-height: 2;
}

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

.page-faq .qa__body {
  padding: 0 0 18px 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
}

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

.page-faq .qa__steps {
  margin: 0 0 10px;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.page-faq .qa__steps li::marker {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-faq .qa__note {
  font-size: 13px;
  color: var(--paper-dim);
  border-left: 2px solid var(--gold);
  padding-left: 12px;
  margin-top: 12px;
}

.page-faq .qa__note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(230, 180, 92, 0.5);
}

.page-faq .qa__note a:hover,
.page-faq .qa__note a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 附图区 ---------- */
.page-faq .faq-media {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  border: 1px solid var(--line-soft);
  background: var(--ink-800);
  padding: var(--faq-pad);
}

.page-faq .faq-media__copy h2 {
  font-size: clamp(20px, 2.8vw, 32px);
  font-weight: 800;
  margin: 6px 0 12px;
}

.page-faq .faq-media__copy p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-dim);
}

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

.page-faq .faq-media .media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-950);
}

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

.page-faq .faq-media .media__caption {
  display: block;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--paper-dim);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-path__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-media {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 252px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-body {
    gap: clamp(24px, 2.8vw, 34px);
  }

  .page-faq .qa > summary {
    padding: 18px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-path__link {
    transition: none;
  }

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