.page-faq {
  --faq-gap: clamp(16px, 4vw, 28px);
}

/* 面包屑 */
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: clamp(14px, 3vw, 24px) 0 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid);
}

.page-faq .breadcrumb a {
  color: var(--sky);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  color: var(--cyan);
}

/* 标题区 */
.page-faq .faq-hero {
  position: relative;
  margin-top: 16px;
  overflow: hidden;
  border-bottom: 1px solid var(--grid);
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(34, 240, 214, 0.14), transparent 62%),
    linear-gradient(165deg, var(--deep-2) 0%, var(--deep) 58%);
}

.page-faq .faq-hero__inner {
  padding-top: clamp(18px, 4vw, 40px);
  padding-bottom: clamp(22px, 4vw, 40px);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 9vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  max-width: 54ch;
  margin: 18px 0 0;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.75;
  color: rgba(244, 248, 252, 0.86);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 22px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-hero__facts .mono {
  color: var(--sand);
  margin-right: 5px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__media {
  margin: 0;
  border-top: 1px solid var(--grid);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: clamp(150px, 26vw, 300px);
  object-fit: cover;
  max-width: 100%;
}

/* 问题定位 */
.page-faq .faq-picker {
  padding: clamp(40px, 7vw, 76px) 0 0;
}

.page-faq .faq-picker__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5.4vw, 2.6rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-picker__head p {
  max-width: 58ch;
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-search {
  display: grid;
  gap: 8px;
  margin-top: 24px;
  padding: 18px clamp(16px, 3vw, 26px);
  border: 1px solid var(--grid);
  background: linear-gradient(120deg, var(--panel) 0%, var(--deep-2) 78%);
}

.page-faq .faq-search__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sky);
}

.page-faq .faq-search__input {
  width: 100%;
  padding: 4px 0 12px;
  border: 0;
  border-bottom: 1px solid var(--grid);
  background: transparent;
  color: var(--white);
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 4.4vw, 1.8rem);
  line-height: 1.2;
  transition: border-color 0.3s var(--ease);
}

.page-faq .faq-search__input::placeholder {
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 300;
  letter-spacing: 0;
  color: rgba(143, 169, 191, 0.78);
}

.page-faq .faq-search__input:hover {
  border-bottom-color: var(--cyan-deep);
}

.page-faq .faq-search__input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .faq-search__hint {
  margin: 0;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--sand);
  opacity: 0.8;
}

/* 分类刻度 */
.page-faq .faq-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-group {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "num count"
    "name name"
    "note note";
  row-gap: 6px;
  height: 100%;
  padding: 16px;
  border: 1px solid var(--grid);
  background: linear-gradient(180deg, rgba(16, 43, 65, 0.92), rgba(10, 27, 44, 0.92));
  color: var(--white);
  text-decoration: none;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq .faq-group__num {
  grid-area: num;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--sand);
}

.page-faq .faq-group__count {
  grid-area: count;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-group__name {
  grid-area: name;
  font-family: var(--font-display);
  font-size: 1.12rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.page-faq .faq-group__note {
  grid-area: note;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

@media (hover: hover) {
  .page-faq .faq-group:hover {
    border-color: var(--cyan-deep);
    transform: translateY(-2px);
  }
}

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

/* 主体两列 */
.page-faq .faq-layout {
  display: grid;
  gap: 26px;
  padding-top: clamp(38px, 6vw, 72px);
  padding-bottom: clamp(44px, 7vw, 88px);
}

/* 左列刻度 */
.page-faq .faq-toc {
  position: sticky;
  top: calc(var(--strip-h) + 10px);
  z-index: 2;
  padding: 12px 0;
  background: linear-gradient(180deg, var(--deep) 70%, rgba(4, 12, 22, 0));
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

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

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--grid);
  font-size: 13px;
  color: var(--white);
  text-decoration: none;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.page-faq .faq-toc a .mono {
  font-size: 10.5px;
  color: var(--sand);
}

.page-faq .faq-toc a:hover {
  border-color: var(--cyan-deep);
  color: var(--cyan);
}

.page-faq .faq-toc a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-toc__cta {
  display: none;
  margin-top: 18px;
}

/* 问答块 */
.page-faq .faq-block {
  scroll-margin-top: calc(var(--strip-h) + 74px);
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(36px, 6vw, 64px);
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--grid);
}

.page-faq .faq-block h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4.6vw, 2.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-block__lede {
  max-width: 62ch;
  margin: 10px 0 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-block__lede a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-deep);
}

/* 图解 */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--grid);
}

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

.page-faq .faq-figure .media__caption {
  padding: 9px 12px;
  border-top: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--sand);
}

/* 检查清单 */
.page-faq .faq-checklist {
  margin: 0 0 20px;
  padding: 16px clamp(14px, 3vw, 22px);
  border: 1px solid var(--grid);
  background:
    linear-gradient(rgba(30, 63, 88, 0.32) 1px, transparent 1px) 0 0 / 100% 28px,
    var(--deep-2);
}

.page-faq .faq-checklist__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sky);
}

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

.page-faq .faq-checklist li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--white);
}

.page-faq .faq-checklist input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  border: 1px solid var(--cyan-deep);
  background: rgba(4, 12, 22, 0.6);
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-checklist input[type="checkbox"]:checked {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: inset 0 0 0 3px var(--deep-2);
}

.page-faq .faq-checklist input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-checklist label {
  cursor: pointer;
}

/* 手风琴 */
.page-faq .faq-item {
  position: relative;
  margin-bottom: 8px;
  border: 1px solid var(--grid);
  background: rgba(16, 43, 65, 0.58);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: -1px;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.45s var(--ease);
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-item[open] {
  background: rgba(16, 43, 65, 0.9);
  border-color: var(--cyan-deep);
}

.page-faq .faq-item summary {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 15px 42px 15px 16px;
  position: relative;
  list-style: none;
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--white);
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 15px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.35s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
}

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

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

.page-faq .faq-item__no {
  flex: 0 0 auto;
  width: 20px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--sand);
  padding-top: 3px;
}

.page-faq .faq-item__body {
  padding: 0 16px 16px;
  font-size: 13.8px;
  font-weight: 300;
  line-height: 1.8;
  color: rgba(244, 248, 252, 0.84);
}

.page-faq .faq-item__body p {
  margin: 0 0 0.7em;
}

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

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-deep);
}

.page-faq .faq-item__body a:hover {
  color: var(--white);
}

.page-faq .faq-steps {
  margin: 0 0 0.7em;
  padding-left: 1.2em;
}

.page-faq .faq-steps li {
  margin-bottom: 3px;
}

.page-faq .faq-item__warn {
  padding-left: 10px;
  border-left: 2px solid var(--coral);
  font-size: 13px;
  color: var(--muted);
}

/* 联系区 */
.page-faq .faq-contact {
  margin-top: clamp(36px, 6vw, 64px);
  scroll-margin-top: calc(var(--strip-h) + 74px);
}

.page-faq .faq-contact__panel {
  display: grid;
  gap: clamp(20px, 4vw, 36px);
  padding: clamp(20px, 4vw, 36px);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--coral);
  background:
    linear-gradient(135deg, rgba(255, 122, 85, 0.13), transparent 62%),
    var(--panel);
}

.page-faq .faq-contact__copy h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.8vw, 2.2rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-contact__copy p {
  max-width: 46ch;
  margin: 12px 0 0;
  font-size: 13.8px;
  line-height: 1.75;
  color: rgba(244, 248, 252, 0.82);
}

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.page-faq .faq-contact__links a {
  font-size: 13px;
  color: var(--sky);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
  padding-bottom: 2px;
}

.page-faq .faq-contact__links a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan-deep);
}

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

.page-faq .faq-contact__list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-contact__list li:first-child {
  border-top: 1px solid var(--grid);
}

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

.page-faq .faq-contact__value {
  font-size: 14px;
  line-height: 1.5;
  color: var(--white);
  word-break: break-word;
}

/* 平板与桌面 */
@media (min-width: 700px) {
  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-item__body {
    padding-left: 46px;
  }

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

@media (min-width: 960px) {
  .page-faq .faq-groups {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-faq .faq-toc {
    top: calc(var(--strip-h) + 20px);
    padding: 0;
    background: transparent;
  }

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

  .page-faq .faq-toc a {
    border: 0;
    border-left: 1px solid var(--grid);
    padding: 9px 0 9px 12px;
    white-space: normal;
  }

  .page-faq .faq-toc a:hover {
    border-left-color: var(--cyan);
  }

  .page-faq .faq-toc__cta {
    display: inline-flex;
    margin-top: 20px;
  }

  .page-faq .faq-item summary {
    padding: 17px 46px 17px 20px;
    font-size: 15px;
  }

  .page-faq .faq-item summary::after {
    right: 18px;
    top: 14px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 18px 50px;
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-group,
  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-item summary::after,
  .page-faq .faq-search__input {
    transition: none;
  }

  .page-faq .faq-item::before {
    transform: scaleY(1);
  }
}
<<<END>>>