.page-faq {
  --faq-gap: clamp(18px, 3vw, 32px);
  --faq-panel: rgba(14, 17, 16, .78);
  --faq-panel-deep: rgba(4, 12, 9, .62);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.6;
  padding: clamp(16px, 3vw, 32px) 0 clamp(48px, 8vw, 96px);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq a {
  text-underline-offset: 3px;
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .mono {
  font-family: var(--font-mono);
}

/* 首屏封面 */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(20px, 4vw, 36px);
  margin-top: 18px;
  padding: clamp(22px, 4vw, 48px);
  background:
    radial-gradient(circle at 92% 0%, rgba(41, 182, 255, .14), transparent 34%),
    linear-gradient(135deg, var(--ink-2) 0%, var(--ink) 58%, #0a2119 100%);
  border: 1px solid var(--line-strong);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -42% 38%;
  height: 68%;
  background:
    repeating-linear-gradient(90deg, transparent 0 28px, rgba(41, 182, 255, .08) 28px 29px),
    repeating-linear-gradient(0deg, transparent 0 28px, rgba(36, 224, 184, .05) 28px 29px);
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-faq .faq-hero__copy {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 28px;
  height: 3px;
  background: var(--flame);
}

.page-faq .faq-hero h1 {
  max-width: 14ch;
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 6.4vw, 4.4rem);
  line-height: .98;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.page-faq .faq-lede {
  max-width: 64ch;
  margin: 20px 0 0;
  color: #d4ded9;
  font-size: clamp(1rem, 1.8vw, 1.12rem);
  line-height: 1.7;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .faq-hero__actions .btn {
  font-family: var(--font-body);
  letter-spacing: .02em;
}

.page-faq .faq-hero__media {
  position: relative;
  z-index: 1;
  margin: 0;
  aspect-ratio: 12 / 7;
  overflow: hidden;
}

.page-faq .faq-hero__media .media-frame__img,
.page-faq .faq-block__media .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-hero__media .media-frame__label,
.page-faq .faq-block__media .media-frame__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
}

/* 快捷入口带 */
.page-faq .faq-quicklinks {
  margin-top: 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-quicklinks__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 12px 0;
  overflow-x: auto;
  list-style: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-quicklinks__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  color: var(--white);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-quicklinks__list a:hover {
  border-color: var(--flame);
  background: rgba(255, 90, 54, .09);
}

.page-faq .faq-quicklinks__list .mono {
  color: var(--flame);
  font-size: 11px;
  letter-spacing: .06em;
}

/* 主体布局 */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(24px, 4vw, 40px);
  min-width: 0;
}

.page-faq .faq-index {
  padding: 18px;
  background: var(--faq-panel-deep);
  border: 1px solid var(--line);
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
}

.page-faq .faq-index__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 10px 8px;
  border-left: 2px solid transparent;
  color: var(--white);
  font-size: 14px;
  text-decoration: none;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-index__link:hover {
  border-left-color: var(--flame);
  background: rgba(41, 182, 255, .08);
}

.page-faq .faq-index__num {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.page-faq .faq-content {
  display: grid;
  gap: var(--faq-gap);
  min-width: 0;
}

/* 分段面板 */
.page-faq .faq-block {
  position: relative;
  min-width: 0;
  padding: clamp(18px, 3vw, 28px);
  background: var(--faq-panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--flame);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .18);
}

.page-faq .faq-block::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 76px;
  height: 14px;
  background: linear-gradient(90deg, transparent, rgba(255, 90, 54, .22));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 16% 100%);
  pointer-events: none;
}

.page-faq .faq-block--steps {
  border-left-color: var(--blue);
}

.page-faq .faq-block--steps::before {
  background: linear-gradient(90deg, transparent, rgba(41, 182, 255, .25));
}

.page-faq .faq-block--data {
  border-left-color: var(--cyan);
}

.page-faq .faq-block--data::before {
  background: linear-gradient(90deg, transparent, rgba(36, 224, 184, .22));
}

.page-faq .faq-block--alert {
  border-left-color: var(--yellow);
}

.page-faq .faq-block--alert::before {
  background: linear-gradient(90deg, transparent, rgba(244, 197, 66, .2));
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: start;
  padding-bottom: 16px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__num {
  color: var(--flame);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  padding-top: 5px;
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  line-height: 1.12;
  letter-spacing: -.01em;
  text-wrap: balance;
}

.page-faq .faq-block__note {
  grid-column: 2;
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

/* 手风琴 */
.page-faq .faq-details {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-details:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-details summary::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
}

.page-faq .faq-details[open] summary::after {
  content: "−";
  color: var(--flame);
}

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

.page-faq .faq-answer {
  max-width: 68ch;
  padding: 0 0 18px;
  color: #c9d4cf;
  font-size: 15px;
  line-height: 1.75;
}

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

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

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

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

/* 步骤条 */
.page-faq .faq-steps {
  display: grid;
  gap: 8px;
  margin: 16px 0 10px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  padding: 14px 14px 14px 52px;
  background: rgba(41, 182, 255, .055);
  border: 1px solid var(--line);
}

.page-faq .faq-step::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  top: 14px;
  left: 14px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .faq-step strong {
  display: block;
  margin-bottom: 2px;
  color: var(--white);
  font-size: 14px;
}

.page-faq .faq-step span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

/* 双版本对照表 */
.page-faq .faq-compare {
  margin: 18px 0 6px;
  overflow-x: auto;
  border: 1px solid var(--line-strong);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-compare table {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
  background: rgba(4, 12, 9, .4);
}

.page-faq .faq-compare th,
.page-faq .faq-compare td {
  padding: 11px 13px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 13px;
  line-height: 1.6;
}

.page-faq .faq-compare thead th {
  color: var(--blue);
  background: rgba(41, 182, 255, .09);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  white-space: nowrap;
}

.page-faq .faq-compare tbody th {
  width: 22%;
  color: var(--muted);
  background: transparent;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.page-faq .faq-compare td {
  color: #d3ddd8;
}

.page-faq .faq-compare tbody tr:nth-child(even) {
  background: rgba(6, 26, 20, .55);
}

.page-faq .faq-block__media {
  margin: 18px 0 0;
  aspect-ratio: 2 / 1;
  overflow: hidden;
}

/* 客服块 */
.page-faq .faq-contact {
  margin-top: 22px;
  padding: clamp(18px, 3vw, 28px);
  background:
    linear-gradient(120deg, rgba(255, 90, 54, .12), rgba(41, 182, 255, .08)),
    var(--ink-3);
  border: 1px dashed var(--line-strong);
}

.page-faq .faq-contact__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  letter-spacing: -.01em;
}

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

.page-faq .faq-contact__item {
  padding-left: 10px;
  border-left: 2px solid var(--flame);
  min-width: 0;
}

.page-faq .faq-contact__key {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.page-faq .faq-contact__val {
  display: block;
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

/* 桌面端非对称分栏 */
@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
  }

  .page-faq .faq-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 88px;
  }

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

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

@media (min-width: 1120px) {
  .page-faq .faq-layout {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 48px);
  }

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

  .page-faq .faq-block {
    padding: clamp(24px, 3vw, 36px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quicklinks__list a,
  .page-faq .faq-index__link {
    transition: none;
  }
}
<<<END>>>