.page-faq {
  background: var(--paper);
  color: var(--deep);
}

.page-faq a {
  color: var(--burnt);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(124, 143, 166, 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(124, 143, 166, 0.14) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-faq .faq-hero__crumb {
  position: relative;
  z-index: 1;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-hero__crumb a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 239, 230, 0.35);
}

.page-faq .faq-hero__crumb span[aria-hidden] {
  margin: 0 8px;
  color: var(--orange);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
  padding: clamp(24px, 4vw, 48px) 0 clamp(28px, 4vw, 44px);
}

.page-faq .faq-hero__eyebrow {
  color: var(--orange);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(38px, 9vw, 96px);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__accent {
  display: block;
  color: var(--orange);
  font-weight: 500;
}

.page-faq .faq-hero__lede {
  margin-top: 22px;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.82);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__quick a {
  display: inline-block;
  padding: 8px 12px;
  border: 1px solid rgba(244, 239, 230, 0.28);
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--paper);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

.page-faq .faq-hero__quick a:hover,
.page-faq .faq-hero__quick a:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid rgba(124, 143, 166, 0.4);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 700;
  object-fit: cover;
}

.page-faq .faq-hero__figure figcaption {
  padding: 8px 10px;
  border-top: 1px solid rgba(124, 143, 166, 0.4);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-hero__index {
  position: relative;
  z-index: 1;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 64%;
  gap: 1px;
  overflow-x: auto;
  border-top: 1px solid rgba(124, 143, 166, 0.35);
  padding-bottom: 4px;
  scrollbar-width: none;
}

.page-faq .faq-hero__index::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-hero__index a {
  padding: 14px 14px 14px 0;
  font-size: 13px;
  color: rgba(244, 239, 230, 0.86);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}

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

.page-faq .faq-hero__index .mono {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: 28px;
  padding: clamp(32px, 5vw, 64px) 0 clamp(40px, 5vw, 72px);
}

.page-faq .faq-side__label {
  color: var(--steel);
  margin-bottom: 10px;
}

.page-faq .faq-side__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-side__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-side__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--deep);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  border-color: var(--orange);
  color: var(--burnt);
}

.page-faq .faq-side__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 5vw, 68px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(23px, 3.4vw, 34px);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.page-faq .faq-group__intro {
  margin: 14px 0 4px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(18, 22, 27, 0.76);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}

.page-faq .faq-item:target {
  padding-left: 14px;
  background: rgba(255, 90, 31, 0.07);
  box-shadow: inset 3px 0 0 var(--orange);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--deep);
  transition: color var(--dur) var(--ease-out);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.2;
  color: var(--burnt);
}

.page-faq .faq-item[open] summary {
  color: var(--burnt);
}

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

.page-faq .faq-item summary:hover {
  color: var(--burnt);
}

.page-faq .faq-item__body {
  max-width: 66ch;
  padding: 0 0 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(18, 22, 27, 0.86);
}

.page-faq .faq-item__body p + p {
  margin-top: 10px;
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-tag {
  display: inline-block;
  margin-top: 14px;
  padding: 3px 8px;
  border: 1px solid rgba(185, 54, 11, 0.4);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--burnt);
}

.page-faq .faq-tag--live {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--lime);
}

/* ---------- 步骤 ---------- */

.page-faq .faq-steps {
  counter-reset: faqstep;
  margin: 2px 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-steps li:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
  padding-top: 3px;
}

/* ---------- 日期轴图 ---------- */

.page-faq .faq-dial {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid var(--line);
  background: rgba(217, 208, 195, 0.22);
}

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

/* ---------- 设备与参数 ---------- */

.page-faq .faq-device {
  display: grid;
  gap: 20px;
  margin: 22px 0 8px;
}

.page-faq .faq-device__figure {
  margin: 0;
  border: 1px solid var(--line);
}

.page-faq .faq-device__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 600;
  object-fit: cover;
}

.page-faq .faq-specs {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  font-size: 13.5px;
}

.page-faq .faq-specs__caption {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-bottom: none;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--orange);
  background: rgba(217, 208, 195, 0.28);
}

.page-faq .faq-specs th,
.page-faq .faq-specs td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-faq .faq-specs tr:last-child th,
.page-faq .faq-specs tr:last-child td {
  border-bottom: none;
}

.page-faq .faq-specs th {
  width: 42%;
  font-weight: 500;
  color: rgba(18, 22, 27, 0.72);
  background: rgba(217, 208, 195, 0.16);
}

.page-faq .faq-specs td {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  color: var(--deep);
}

/* ---------- 联系支持 ---------- */

.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  background: var(--carbon);
  color: var(--paper);
  padding: clamp(34px, 5vw, 64px) 0;
}

.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 240px;
  height: 240px;
  border: 1px solid rgba(255, 90, 31, 0.45);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-faq .faq-contact__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-faq .faq-contact__eyebrow {
  color: var(--orange);
}

.page-faq .faq-contact__lead h2 {
  margin: 14px 0 0;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-faq .faq-contact__lead p {
  margin: 14px 0 22px;
  max-width: 48ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.78);
}

.page-faq .faq-contact__lead .btn {
  display: inline-block;
  text-decoration: none;
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(244, 239, 230, 0.18);
}

.page-faq .faq-contact__item {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(244, 239, 230, 0.18);
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-faq .faq-contact__val {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(244, 239, 230, 0.6);
}

/* ---------- 相关页面 ---------- */

.page-faq .faq-next {
  display: grid;
  gap: 1px;
  margin-top: clamp(34px, 5vw, 60px);
  margin-bottom: clamp(36px, 5vw, 64px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .faq-next a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px;
  background: var(--paper);
  font-size: 14px;
  line-height: 1.5;
  color: var(--deep);
  text-decoration: none;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

.page-faq .faq-next a:hover,
.page-faq .faq-next a:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

.page-faq .faq-next .eyebrow {
  color: var(--orange);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero__index {
    grid-auto-flow: row;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-columns: auto;
    overflow-x: visible;
  }

  .page-faq .faq-contact__item {
    grid-template-columns: 120px 1fr;
    align-items: baseline;
    column-gap: 18px;
  }

  .page-faq .faq-contact__note {
    grid-column: 2;
  }

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

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-hero__index {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-faq .faq-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
    border-top: 2px solid var(--ink);
    padding-top: 12px;
  }

  .page-faq .faq-side__list {
    flex-direction: column;
    gap: 0;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-side__link {
    border: none;
    border-bottom: 1px solid var(--line);
    padding: 11px 0;
    white-space: normal;
  }

  .page-faq .faq-side__link:hover,
  .page-faq .faq-side__link:focus-visible {
    border-bottom-color: var(--orange);
    padding-left: 8px;
  }

  .page-faq .faq-device {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 24px;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 56px;
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__quick a,
  .page-faq .faq-side__link,
  .page-faq .faq-item summary,
  .page-faq .faq-next a {
    transition: none;
  }
}
<<<END>>>