.page-faq {
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.75;
  padding-block: clamp(1rem, 2.5vw, 1.75rem) clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(1rem, 3vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  padding-bottom: clamp(1.75rem, 4vw, 2.75rem);
  border-bottom: 2px solid var(--ink-900);
}

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

.page-faq .faq-hero h1 {
  margin: 0.6rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 38em;
  font-size: var(--fs-md);
  line-height: 1.78;
  color: var(--graphite);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__frame {
  border: var(--line);
  background: var(--paper-2);
  overflow: hidden;
}

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

.page-faq .media-caption {
  margin-top: 0.5rem;
  font-size: var(--fs-xs);
  color: var(--ink-500);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
}

/* ---------- 症状分流 ---------- */
.page-faq .faq-triage {
  padding-block: clamp(1.75rem, 4vw, 2.75rem) clamp(1.25rem, 3vw, 2rem);
  scroll-margin-top: 6.5rem;
}

.page-faq .faq-triage__head {
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
}

.page-faq .faq-triage__grid {
  display: grid;
  gap: 1px;
  background: var(--stone-200);
  border: var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-faq .triage-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.15rem 1.1rem 1.35rem;
  background: var(--paper-2);
  color: inherit;
  text-decoration: none;
  border-top: 3px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .triage-card:hover,
.page-faq .triage-card:focus-visible {
  background: var(--sage-100);
  border-top-color: var(--amber-500);
}

.page-faq .triage-card__no {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
  color: var(--ink-500);
}

.page-faq .triage-card__title {
  font-size: var(--fs-md);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-faq .triage-card__note {
  font-size: var(--fs-sm);
  line-height: 1.65;
  color: var(--ink-500);
}

@media (min-width: 700px) {
  .page-faq .faq-triage__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-faq .faq-triage__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding-top: clamp(0.5rem, 2vw, 1rem);
}

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

.page-faq .faq-rail {
  display: none;
}

@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 188px;
    gap: 3rem;
  }

  .page-faq .faq-rail {
    display: block;
    align-self: start;
  }

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

.page-faq .faq-rail__label {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: var(--ink-500);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--stone-200);
}

.page-faq .faq-rail__list a {
  display: flex;
  gap: 0.55rem;
  align-items: baseline;
  padding: 0.4rem 0 0.4rem 0.85rem;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: var(--fs-sm);
  color: var(--ink-500);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--ink-900);
  border-left-color: var(--amber-500);
}

.page-faq .faq-rail__list .mono {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--amber-500);
}

.page-faq .faq-rail__help {
  display: inline-block;
  margin-top: 1rem;
  font-size: var(--fs-xs);
  color: var(--ink-700);
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
  scroll-margin-top: 6.5rem;
}

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

.page-faq .faq-group__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-s) var(--radius-s) 0 0;
  box-shadow: inset 0 0 0 1px var(--stone-200);
}

.page-faq .faq-group--sage .faq-group__bar {
  background: var(--sage-100);
}

.page-faq .faq-group--paper .faq-group__bar {
  background: var(--paper-2);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
  color: var(--ink-700);
}

.page-faq .faq-group__bar h2 {
  margin: 0;
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-faq .faq-group__bar .tag {
  margin-left: auto;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-group__list {
  border: var(--line);
  border-top: none;
  background: var(--paper-2);
}

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

.page-faq .faq-item:last-of-type {
  border-bottom: none;
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: center;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease);
}

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

.page-faq .faq-item__summary:hover {
  background: var(--stone-100);
}

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--amber-500);
  outline-offset: -2px;
}

.page-faq .faq-item__arrow {
  width: 0;
  height: 0;
  border-left: 7px solid var(--ink-500);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(90deg);
  border-left-color: var(--amber-500);
}

.page-faq .faq-item__code {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--ink-500);
  white-space: nowrap;
}

.page-faq .faq-item__q {
  font-size: var(--fs-base);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-900);
}

.page-faq .faq-item__body {
  display: grid;
  gap: 0.5rem;
  padding: 0 1rem 1.15rem 2.55rem;
}

.page-faq .faq-line {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--graphite);
}

.page-faq .faq-line__key {
  position: relative;
  display: inline-block;
  padding-left: 0.9rem;
  margin-right: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--ink-700);
}

.page-faq .faq-line__key::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.45rem;
  height: 2px;
  background: var(--stone-200);
}

.page-faq .faq-line--do .faq-line__key::before {
  width: 0.75rem;
  background: var(--amber-500);
}

.page-faq .faq-line--do {
  padding-left: 0.6rem;
  border-left: 2px solid var(--amber-300);
}

@media (min-width: 640px) {
  .page-faq .faq-line {
    display: grid;
    grid-template-columns: 3.4rem minmax(0, 1fr);
    gap: 0.75rem;
    align-items: baseline;
  }

  .page-faq .faq-line__key {
    margin-right: 0;
    padding-left: 0.85rem;
  }

  .page-faq .faq-line--do {
    padding-left: 0.75rem;
  }
}

/* ---------- 注册步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--stone-200);
  border: var(--line);
  border-top: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: start;
  padding: 1.15rem 1rem 1.35rem;
  background: var(--paper-2);
}

.page-faq .faq-step__no {
  display: grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  border-radius: var(--radius-s);
  background: var(--ink-900);
  color: var(--amber-300);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
}

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

.page-faq .faq-step__body h3 {
  margin: 0 0 0.4rem;
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-step__body p {
  margin: 0 0 0.7rem;
  font-size: var(--fs-sm);
  line-height: 1.72;
  color: var(--graphite);
}

.page-faq .faq-step__versions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.page-faq .faq-step__versions li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: baseline;
  font-size: var(--fs-xs);
  line-height: 1.65;
  color: var(--ink-500);
}

@media (min-width: 780px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 设备示意图 ---------- */
.page-faq .faq-device {
  margin: 0;
  padding: 1rem;
  border: var(--line);
  border-top: none;
  background: var(--paper-2);
}

.page-faq .faq-device__frame {
  overflow: hidden;
  border: var(--line);
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(2rem, 5vw, 3.5rem);
  padding: clamp(1.4rem, 4vw, 2.5rem);
  background: var(--paper-2);
  border: var(--line);
  border-top: 3px solid var(--amber-500);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-sheet);
  scroll-margin-top: 6.5rem;
}

.page-faq .faq-help__intro h2 {
  margin: 0.5rem 0 0.85rem;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink-900);
}

.page-faq .faq-help__intro p {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--graphite);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.page-faq .faq-help__side h3 {
  margin: 0 0 0.7rem;
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-900);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  border-top: var(--line);
  padding-top: 0.85rem;
}

.page-faq .faq-help__list li {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: var(--graphite);
}

.page-faq .faq-help__list .mono {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--amber-500);
}

.page-faq .faq-help__contact {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding-top: 0.9rem;
  border-top: var(--line);
}

.page-faq .faq-help__contact dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--ink-500);
}

.page-faq .faq-help__contact dd {
  margin: 0.15rem 0 0;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}

@media (min-width: 860px) {
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .triage-card,
  .page-faq .faq-item__summary,
  .page-faq .faq-item__arrow,
  .page-faq .faq-rail__list a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>