.page-faq {
  --faq-rail: 264px;
  --faq-card-pad: clamp(16px, 3vw, 30px);
  padding-top: 0;
  background: var(--sand);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(26px, 5vw, 60px)) 0 clamp(34px, 5vw, 62px);
  background:
    radial-gradient(58% 78% at 92% 4%, rgba(255, 107, 74, .20), transparent 68%),
    radial-gradient(52% 66% at 0% 98%, rgba(95, 224, 176, .22), transparent 66%),
    var(--sand);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -42% 52%;
  height: 360px;
  background: repeating-linear-gradient(115deg, rgba(11, 42, 74, .055) 0 2px, transparent 2px 15px);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

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

.page-faq .breadcrumb {
  font-size: .82rem;
  color: var(--muted);
  margin-bottom: 16px;
}

.page-faq .breadcrumb a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb a:hover {
  border-bottom-color: var(--coral);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.05rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--navy);
  margin: .18em 0 .34em;
  text-wrap: balance;
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink);
  margin: 0;
}

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

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-faq .faq-stats li {
  display: inline-flex;
  align-items: baseline;
  gap: .42em;
  font-size: .84rem;
  color: var(--muted);
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.page-faq .faq-stats .mono {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--navy-deep);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(11, 42, 74, .12);
}

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

.page-faq .faq-hero__figure figcaption {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--mint-soft);
  padding: 10px 14px;
  background: var(--navy-deep);
}

/* ---------- 分类查找 ---------- */
.page-faq .faq-finder {
  padding: clamp(38px, 6vw, 76px) 0 clamp(30px, 5vw, 56px);
}

.page-faq .faq-finder__head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-faq .faq-finder__head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--navy);
  margin: .16em 0 .4em;
}

.page-faq .faq-finder__head .prose {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
}

.page-faq .faq-shell {
  display: grid;
  gap: clamp(16px, 2.4vw, 30px);
  align-items: start;
}

/* 分类标签 */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 10px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tab {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: .94rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-tab:hover {
  border-color: var(--coral);
}

.page-faq .faq-tab.is-active {
  background: var(--coral);
  border-color: var(--coral);
  color: var(--navy);
}

.page-faq .faq-tab__num {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--muted);
}

.page-faq .faq-tab.is-active .faq-tab__num {
  color: var(--navy);
}

.page-faq .faq-rail__hint {
  display: none;
  margin: 14px 0 0;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 面板与手风琴 */
.page-faq .faq-panels {
  min-width: 0;
}

.page-faq .faq-panel {
  display: none;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--faq-card-pad);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-panel.is-active {
  display: block;
}

.page-faq .faq-list .accordion__item {
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-list .accordion__item:last-child {
  border-bottom: 0;
}

.page-faq .faq-q {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
}

.page-faq .faq-list .accordion__trigger {
  position: relative;
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 40px 16px 0;
  border: 0;
  background: none;
  font: inherit;
  font-size: clamp(1rem, 2.1vw, 1.06rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.page-faq .faq-list .accordion__trigger:hover {
  color: var(--navy);
}

.page-faq .faq-list .accordion__trigger::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--coral);
}

.page-faq .faq-list .accordion__trigger[aria-expanded="true"]::after {
  content: "–";
}

.page-faq .faq-q__num {
  flex: 0 0 auto;
  margin-top: 3px;
  padding: 2px 6px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 700;
  color: var(--navy);
  background: var(--mint-soft);
}

.page-faq .faq-list .accordion__panel {
  padding: 0 0 18px;
}

.page-faq .faq-do {
  margin: 0 0 10px;
  max-width: 64ch;
  line-height: 1.85;
}

.page-faq .faq-ok {
  margin: 0;
  max-width: 64ch;
  padding: 8px 14px;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--ink);
  background: var(--mint-soft);
  border-left: 3px solid var(--mint);
  border-radius: 0 10px 10px 0;
}

.page-faq .accordion__panel a {
  color: var(--navy);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--coral-soft);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .accordion__panel a:hover {
  text-decoration-color: var(--coral);
}

/* 版本资料双路径 */
.page-faq .faq-routes {
  display: grid;
  gap: 14px;
  margin-bottom: 20px;
}

.page-faq .faq-route {
  position: relative;
  padding: 18px 18px 16px;
  border-radius: var(--radius-sm);
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: var(--paper);
  overflow: hidden;
}

.page-faq .faq-route--alt {
  background: linear-gradient(160deg, #ffffff 0%, var(--mint-soft) 100%);
  color: var(--ink);
  border: 1px solid var(--line);
}

.page-faq .faq-route__tag {
  display: inline-block;
  margin: 0 0 8px;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  background: var(--coral);
  color: var(--navy);
}

.page-faq .faq-route--alt .faq-route__tag {
  background: var(--navy);
  color: var(--mint);
}

.page-faq .faq-route h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -.01em;
}

.page-faq .faq-route__steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-route__steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  font-size: .9rem;
  line-height: 1.7;
}

.page-faq .faq-route__steps .mono {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  opacity: .75;
  padding-top: 3px;
}

.page-faq .faq-route--alt .faq-route__steps .mono {
  color: var(--navy);
  opacity: .8;
}

.page-faq .faq-route .copy-btn {
  font-size: .8rem;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 253, 248, .45);
  background: rgba(255, 253, 248, .1);
  color: var(--paper);
  cursor: pointer;
  font-family: inherit;
  transition: background .18s var(--ease);
}

.page-faq .faq-route--alt .copy-btn {
  border-color: var(--navy);
  background: transparent;
  color: var(--navy);
}

.page-faq .faq-route .copy-btn:hover {
  background: rgba(255, 253, 248, .24);
}

.page-faq .faq-route--alt .copy-btn:hover {
  background: var(--navy);
  color: var(--paper);
}

/* ---------- 设备自检 ---------- */
.page-faq .faq-device {
  padding: clamp(38px, 6vw, 76px) 0;
  background:
    linear-gradient(180deg, rgba(11, 42, 74, 0) 0%, rgba(11, 42, 74, .05) 100%),
    var(--sand);
  border-top: 1px solid var(--line);
}

.page-faq .faq-device__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-faq .faq-device__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

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

.page-faq .faq-device__figure figcaption {
  padding: 10px 16px;
  font-size: .78rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.page-faq .faq-device__copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--navy);
  margin: .16em 0 .45em;
}

.page-faq .faq-device__copy .prose {
  margin: 0 0 24px;
  max-width: 58ch;
  color: var(--muted);
  line-height: 1.85;
}

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

.page-faq .faq-check-list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.page-faq .faq-check-list__num {
  font-family: var(--font-mono);
  font-size: .92rem;
  font-weight: 700;
  color: var(--coral);
  padding-top: 2px;
}

.page-faq .faq-check-list h3 {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.5;
}

.page-faq .faq-check-list p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-device__note {
  margin: 22px 0 0;
  padding: 14px 16px;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--ink);
  background: var(--paper);
  border-left: 3px solid var(--coral);
  border-radius: 0 10px 10px 0;
}

/* ---------- 反馈通道 ---------- */
.page-faq .faq-help {
  padding: clamp(38px, 6vw, 78px) 0 clamp(46px, 7vw, 90px);
  background:
    radial-gradient(60% 80% at 100% 0%, rgba(95, 224, 176, .16), transparent 66%),
    radial-gradient(52% 70% at 0% 100%, rgba(255, 107, 74, .14), transparent 64%),
    var(--paper);
  border-top: 1px solid var(--line);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-faq .faq-help__copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--navy);
  margin: .16em 0 .45em;
}

.page-faq .faq-help__copy .prose {
  margin: 0 0 22px;
  max-width: 58ch;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-prepare {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-prepare li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-prepare .mono {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 700;
  color: var(--navy);
  background: var(--mint-soft);
  border-radius: 5px;
  text-align: center;
  padding: 2px 0;
}

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

.page-faq .faq-help__fine {
  margin: 18px 0 0;
  font-size: .84rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 56ch;
}

.page-faq .faq-help__card {
  padding: var(--faq-card-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-help__card-tag {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  background: var(--navy);
  color: var(--mint);
}

.page-faq .faq-help__card h3 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--navy);
}

.page-faq .faq-contact {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact > div {
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

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

.page-faq .faq-contact dt {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: 4px;
}

.page-faq .faq-contact dd {
  margin: 0;
  font-size: .96rem;
  line-height: 1.7;
  color: var(--navy);
  font-weight: 600;
  word-break: break-word;
}

.page-faq .faq-contact dd a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 2px solid var(--coral-soft);
}

.page-faq .faq-contact dd a:hover {
  border-bottom-color: var(--coral);
}

.page-faq .faq-contact dd.faq-contact__act {
  margin-top: 6px;
  font-weight: 400;
}

.page-faq .faq-contact .copy-btn {
  font-family: inherit;
  font-size: .78rem;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--sand);
  color: var(--ink);
  cursor: pointer;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-contact .copy-btn:hover {
  background: var(--mint-soft);
  border-color: var(--mint);
}

.page-faq .faq-help__hours {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: .82rem;
  line-height: 1.8;
  color: var(--muted);
}

/* 焦点可见性 */
.page-faq .faq-tab:focus-visible,
.page-faq .faq-list .accordion__trigger:focus-visible,
.page-faq .copy-btn:focus-visible,
.page-faq .btn:focus-visible,
.page-faq a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__figure {
    transform: rotate(-1.2deg);
  }

  .page-faq .faq-routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(20px, 3vw, 34px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 18px);
    padding: 18px 14px 16px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-tab {
    width: 100%;
    min-height: 48px;
    justify-content: flex-start;
    white-space: normal;
    padding: 12px 12px;
    border-radius: var(--radius-sm);
    border-color: transparent;
    background: transparent;
  }

  .page-faq .faq-tab:hover {
    background: var(--mint-soft);
    border-color: transparent;
  }

  .page-faq .faq-tab.is-active {
    background: var(--navy);
    border-color: var(--navy);
    color: var(--paper);
  }

  .page-faq .faq-tab.is-active .faq-tab__num {
    color: var(--mint);
  }

  .page-faq .faq-rail__hint {
    display: block;
  }

  .page-faq .faq-device__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }
}

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

  .page-faq * {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}
<<<END>>>