.page-faq {
  color: var(--paper);
  padding-bottom: clamp(64px, 9vw, 112px);
}

/* 面包屑 */
.page-faq .breadcrumb__list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--accent);
}

.page-faq .breadcrumb__link[aria-current="page"] {
  color: var(--accent);
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

/* 页首说明 */
.page-faq .help-head {
  display: grid;
  gap: 18px;
  padding-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-faq .help-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 6vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 22ch;
  text-wrap: balance;
}

.page-faq .help-head__lead {
  margin: 0;
  max-width: 66ch;
  color: var(--muted);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
}

.page-faq .help-head__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 目录 + 正文骨架 */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: clamp(28px, 4vw, 52px);
}

.page-faq .faq-index {
  display: grid;
  gap: 12px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel);
  align-content: start;
  min-width: 0;
}

.page-faq .faq-index__label {
  margin: 0;
  color: var(--teal);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 6px 8px 0;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  border-radius: var(--radius-s);
  transition: color 160ms ease, background-color 160ms ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--accent);
  background: var(--accent-soft);
}

.page-faq .faq-index__link .mono-num {
  font-size: 11px;
  color: var(--teal);
  letter-spacing: 0.1em;
}

.page-faq .faq-index__note {
  margin: 6px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
}

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

/* 章节 */
.page-faq .faq-section {
  scroll-margin-top: 104px;
  padding-block: clamp(34px, 5vw, 60px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-section__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 32px);
  max-width: 74ch;
}

.page-faq .faq-section__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--season);
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-faq .faq-section__head p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(14.5px, 1.4vw, 16px);
  line-height: 1.8;
}

/* 状态自检 */
.page-faq .selfcheck {
  display: grid;
  gap: 20px;
}

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

.page-faq .state-card {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px 20px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--muted);
  border-radius: var(--radius-s);
  background: var(--panel);
  transition: transform 180ms ease, border-color 180ms ease;
}

.page-faq .state-card:hover {
  transform: translateY(-2px);
  border-color: var(--line);
  border-left-color: var(--teal);
}

.page-faq .state-card--pending { border-left-color: var(--season); }
.page-faq .state-card--done { border-left-color: var(--accent); }
.page-faq .state-card--alert { border-left-color: var(--alert); }

.page-faq .state-card__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .state-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 3px rgba(154, 181, 171, 0.16);
}

.page-faq .state-card--pending .state-card__dot {
  background: var(--season);
  box-shadow: 0 0 0 3px var(--season-soft);
}

.page-faq .state-card--done .state-card__dot {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.page-faq .state-card--alert .state-card__dot {
  background: var(--alert);
  box-shadow: 0 0 0 3px rgba(255, 107, 94, 0.18);
}

.page-faq .state-card h3 {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.45;
  font-weight: 600;
}

.page-faq .state-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.72;
}

.page-faq .state-card__step {
  justify-self: start;
  margin-top: 4px;
  padding-bottom: 2px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px dashed rgba(59, 240, 208, 0.45);
}

.page-faq .state-card__step:hover,
.page-faq .state-card__step:focus-visible {
  border-bottom-style: solid;
}

/* 图片 */
.page-faq .figure {
  margin: 0;
  min-width: 0;
}

.page-faq .figure__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel-2);
  line-height: 0;
}

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

.page-faq .figure__caption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
}

.page-faq .install-figure {
  margin-bottom: clamp(20px, 3vw, 30px);
}

/* 安装步骤 */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-faq .step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-faq .step:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .step__num {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.3;
  color: var(--accent);
  letter-spacing: 0.02em;
}

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

.page-faq .step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17.5px;
  line-height: 1.4;
  font-weight: 700;
}

.page-faq .step__text {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-faq .step__branches {
  display: grid;
  gap: 8px;
}

.page-faq .step__branch {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--panel-veil);
  color: var(--paper);
  font-size: 13px;
  line-height: 1.7;
}

.page-faq .step__os {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--teal);
}

/* 折叠问答 */
.page-faq .qa-group {
  display: grid;
  gap: 10px;
  margin-top: clamp(18px, 2.5vw, 26px);
}

.page-faq .fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: var(--panel);
  transition: border-color 180ms ease;
}

.page-faq .fold[open] {
  border-color: rgba(59, 240, 208, 0.35);
}

.page-faq .fold__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 14.5px;
  line-height: 1.6;
  transition: color 180ms ease;
}

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

.page-faq .fold__summary::before {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.45;
  color: var(--accent);
}

.page-faq .fold[open] .fold__summary::before {
  content: "−";
}

.page-faq .fold[open] .fold__summary {
  color: var(--accent);
}

.page-faq .fold__summary:hover {
  color: var(--accent);
}

.page-faq .fold__summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: var(--radius-s);
}

.page-faq .fold__body {
  padding: 0 16px 16px 44px;
  color: var(--muted);
  font-size: 13.8px;
  line-height: 1.82;
}

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

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

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

/* 规格数字 */
.page-faq .facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .fact {
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--teal);
  border-radius: var(--radius-s);
  background: var(--panel);
  color: var(--paper);
  font-size: 13.5px;
  line-height: 1.72;
}

.page-faq .fact strong {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--accent);
}

/* 章节延伸链接 */
.page-faq .section-more {
  margin: clamp(18px, 2.5vw, 24px) 0 0;
}

.page-faq .section-more__link {
  display: inline-block;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(59, 240, 208, 0.4);
}

.page-faq .section-more__link:hover,
.page-faq .section-more__link:focus-visible {
  border-bottom-color: var(--accent);
}

/* 人工协助 */
.page-faq .escalate {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(158deg, rgba(18, 59, 48, 0.92), rgba(11, 36, 29, 0.92));
  box-shadow: var(--shadow-deep);
  min-width: 0;
}

.page-faq .contact-list {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-faq .contact-list__row {
  display: grid;
  gap: 3px;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--line);
}

.page-faq .contact-list__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .contact-list dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-faq .contact-list dd {
  margin: 0;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.7;
  word-break: break-word;
}

.page-faq .escalate__note {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.78;
  max-width: 60ch;
}

.page-faq .escalate__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 平板与桌面 */
@media (min-width: 640px) {
  .page-faq .selfcheck__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    padding: 4px 0 4px 20px;
    border: 0;
    border-left: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
  }

  .page-faq .selfcheck {
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: start;
  }

  .page-faq .step {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 20px;
  }

  .page-faq .fold__summary {
    font-size: 15px;
  }

  .page-faq .fold__body {
    font-size: 14.2px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-shell {
    grid-template-columns: 240px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .state-card,
  .page-faq .fold,
  .page-faq .fold__summary,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .state-card:hover {
    transform: none;
  }
}
<<<END>>>