.page-faq {
  --faq-rail-w: 218px;
  --faq-gap: clamp(28px, 3.6vw, 60px);
  --faq-section-gap: clamp(64px, 7.5vw, 122px);
  --faq-card-bg: rgba(255, 255, 255, .045);
  --faq-card-bg-hover: rgba(14, 59, 59, .62);
  display: block;
  padding-bottom: clamp(72px, 9vw, 140px);
}

.page-faq .breadcrumb {
  padding-top: clamp(20px, 3vw, 34px);
  padding-bottom: clamp(10px, 1.6vw, 18px);
}

/* ---------- 整体网格：侧轨 + 正文流 ---------- */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

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

.page-faq .faq-stream > * + * {
  margin-top: var(--faq-section-gap);
}

/* ---------- 侧边分类轨道 ---------- */
.page-faq .faq-rail {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-lg);
  background: rgba(36, 30, 78, .55);
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--pill);
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: .7;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--white);
  border-color: var(--cyan);
  background: rgba(0, 229, 255, .08);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
  padding-top: clamp(12px, 2vw, 26px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-heading);
  font-size: clamp(46px, 8vw, 86px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  margin: 0;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-faq .faq-hero__side {
  display: grid;
  gap: 14px;
  align-content: start;
}

/* 公告条 */
.page-faq .faq-notice {
  padding: 20px 22px;
  border: 1px solid rgba(255, 107, 53, .38);
  border-radius: var(--r-lg);
  background: var(--wine);
}

.page-faq .faq-notice__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--signal);
}

.page-faq .faq-notice__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-notice__link {
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, .45);
  padding-bottom: 2px;
}

.page-faq .faq-notice__link:hover,
.page-faq .faq-notice__link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* 快捷状态卡 */
.page-faq .faq-quick {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "dot label"
    "title title"
    "meta meta";
  gap: 6px 10px;
  padding: 20px 22px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-lg);
  background: var(--faq-card-bg);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-quick:hover,
.page-faq .faq-quick:focus-visible {
  transform: translateY(-3px);
  border-color: var(--hair);
  background: var(--faq-card-bg-hover);
}

.page-faq .faq-quick__dot {
  grid-area: dot;
  align-self: center;
}

.page-faq .faq-quick__dot--warn {
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, .16);
}

.page-faq .faq-quick__dot--info {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, .16);
}

.page-faq .faq-quick__label {
  grid-area: label;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-faq .faq-quick__title {
  grid-area: title;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-quick__meta {
  grid-area: meta;
  font-size: 14px;
  line-height: 1.65;
  color: var(--grey);
}

/* ---------- 章节头 ---------- */
.page-faq .faq-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 3.4vw, 44px);
}

.page-faq .faq-head .eyebrow {
  margin: 0 0 12px;
}

.page-faq .faq-head .section-title {
  margin: 0 0 14px;
}

.page-faq .faq-head .section-lede {
  margin: 0;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(30px, 4vw, 48px);
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--teal);
}

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

.page-faq .faq-figure--flow img {
  aspect-ratio: 5 / 3;
}

.page-faq .faq-figure--library img {
  aspect-ratio: 4 / 3;
}

.page-faq .faq-figure .media-caption {
  display: block;
  padding: 12px 18px;
  font-size: 13px;
  color: var(--grey);
}

/* ---------- 资料下载卡片 ---------- */
.page-faq .faq-downloads {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .faq-dl {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px 24px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-xl);
  background: var(--faq-card-bg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-dl:hover,
.page-faq .faq-dl:focus-within {
  transform: translateY(-3px);
  border-color: var(--hair);
  background: var(--faq-card-bg-hover);
}

.page-faq .faq-dl__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  border: 1px solid currentColor;
  color: var(--cyan);
  background: rgba(0, 229, 255, .07);
}

.page-faq .faq-dl__icon[data-tone="teal"] {
  color: #4fd1b5;
  background: rgba(79, 209, 181, .08);
}

.page-faq .faq-dl__icon[data-tone="signal"] {
  color: var(--signal);
  background: rgba(255, 107, 53, .1);
}

.page-faq .faq-dl__icon[data-tone="grey"] {
  color: var(--mist);
  background: rgba(215, 222, 230, .08);
}

.page-faq .faq-dl__icon[data-tone="indigo"] {
  color: #9d8cff;
  background: rgba(157, 140, 255, .1);
}

.page-faq .faq-dl .card-title {
  margin: 4px 0 0;
  font-family: var(--font-heading);
  font-size: 21px;
  color: var(--white);
}

.page-faq .faq-dl__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .faq-dl .card-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-dl__use {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--hair-soft);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--grey);
}

.page-faq .faq-more {
  margin: clamp(26px, 3.2vw, 40px) 0 0;
}

/* ---------- 折叠步骤 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 14px;
}

.page-faq .faq-step {
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-lg);
  background: var(--faq-card-bg);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-step[open] {
  border-color: var(--hair);
}

.page-faq .faq-step summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-step__num {
  flex: 0 0 auto;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .faq-step__title {
  font-family: var(--font-heading);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-step__state {
  margin-left: auto;
  padding: 4px 11px;
  border: 1px solid;
  border-radius: var(--pill);
  font-size: 11px;
  letter-spacing: .1em;
  white-space: nowrap;
}

.page-faq .faq-step__state--warn {
  color: var(--signal);
  border-color: rgba(255, 107, 53, .45);
  background: rgba(255, 107, 53, .1);
}

.page-faq .faq-step__state--info {
  color: var(--cyan);
  border-color: rgba(0, 229, 255, .4);
  background: rgba(0, 229, 255, .08);
}

.page-faq .faq-step__sign {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-left: 6px;
}

.page-faq .faq-step__sign::before,
.page-faq .faq-step__sign::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-step__sign::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-step[open] .faq-step__sign::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-step__body {
  padding: 0 22px 24px;
}

.page-faq .faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqpoint;
}

.page-faq .faq-list > li {
  position: relative;
  padding: 10px 0 10px 30px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  border-top: 1px solid var(--hair-soft);
}

.page-faq .faq-list > li::before {
  counter-increment: faqpoint;
  content: counter(faqpoint, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--grey);
}

.page-faq .faq-step__hint {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-radius: var(--r-md);
  border-left: 3px solid var(--cyan);
  background: rgba(0, 229, 255, .06);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 登录三步流程 ---------- */
.page-faq .faq-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .faq-flow__item {
  position: relative;
  padding: 24px 24px 24px 28px;
  border: 1px solid var(--hair-soft);
  border-left: 4px solid var(--cyan);
  border-radius: var(--r-lg);
  background: var(--faq-card-bg);
}

.page-faq .faq-flow__num {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .faq-flow__title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-note {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 移动端四步自查 ---------- */
.page-faq .faq-check {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.page-faq .faq-check__item {
  position: relative;
  padding: 22px 22px 22px 24px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(14, 59, 59, .72), rgba(11, 27, 43, .4));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-check__item:hover,
.page-faq .faq-check__item:focus-within {
  transform: translateY(-3px);
  border-color: var(--hair);
}

.page-faq .faq-check__badge {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  border-radius: var(--pill);
  background: rgba(0, 229, 255, .12);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-faq .faq-check__title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-check__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

/* 机型建议 */
.page-faq .faq-device {
  margin: 0;
}

.page-faq .faq-device__row {
  padding: 12px 0;
  border-top: 1px solid var(--hair-soft);
}

.page-faq .faq-device__row dt {
  margin-bottom: 5px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-device__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--grey);
}

/* ---------- 故障上报时效 ---------- */
.page-faq .faq-section--wine {
  padding: clamp(30px, 4vw, 52px) clamp(22px, 3vw, 44px);
  border-radius: var(--r-xl);
  border: 1px solid rgba(255, 107, 53, .26);
  background: linear-gradient(150deg, rgba(74, 30, 43, .86), rgba(11, 27, 43, .9));
}

.page-faq .faq-sla {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-sla__item {
  padding: 20px 20px 18px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-lg);
  background: rgba(11, 27, 43, .55);
}

.page-faq .faq-sla__num {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--signal);
}

.page-faq .faq-sla__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 标签分类 ---------- */
.page-faq .faq-tags {
  margin-bottom: clamp(28px, 3.6vw, 46px);
}

.page-faq .faq-exit {
  padding: 26px 26px 28px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-xl);
  background: var(--faq-card-bg);
}

.page-faq .faq-exit__text {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-grid {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    padding: 22px 20px;
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list > li + li {
    margin-top: 6px;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    border-color: transparent;
    border-radius: var(--r-md);
    padding: 10px 12px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-downloads {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-sla {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-section--wine {
    padding-inline: clamp(36px, 4vw, 60px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick,
  .page-faq .faq-dl,
  .page-faq .faq-check__item,
  .page-faq .faq-step__sign::before,
  .page-faq .faq-step__sign::after {
    transition: none;
  }

  .page-faq .faq-quick:hover,
  .page-faq .faq-quick:focus-visible,
  .page-faq .faq-dl:hover,
  .page-faq .faq-dl:focus-within,
  .page-faq .faq-check__item:hover,
  .page-faq .faq-check__item:focus-within {
    transform: none;
  }
}
<<<END>>>