.page-faq {
  --faq-cut: 14px;
  --faq-sticky-top: 108px;
  color: var(--text);
  padding-bottom: clamp(44px, 7vw, 88px);
}

.page-faq .breadcrumbs {
  margin-top: 18px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  margin-top: 16px;
  padding: clamp(20px, 4vw, 42px) clamp(18px, 4vw, 40px);
  background:
    radial-gradient(130% 150% at 100% 0%, rgba(185, 242, 39, 0.10), transparent 58%),
    radial-gradient(90% 120% at 0% 100%, rgba(78, 210, 180, 0.07), transparent 60%),
    var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--lime) 0 6px,
    transparent 6px 14px
  );
  opacity: 0.55;
}

.page-faq .faq-hero .eyebrow {
  margin-bottom: 12px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 6.2vw, 3.3rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  max-width: 20ch;
}

.page-faq .faq-hero .lead {
  max-width: 58ch;
  color: var(--muted);
  font-size: clamp(0.95rem, 2.4vw, 1.0625rem);
  line-height: 1.75;
  margin: 0;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 12px;
}

.page-faq .faq-stats .stat {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.page-faq .faq-stats .stat__num {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.05rem, 3.4vw, 1.6rem);
  color: var(--amber);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.page-faq .faq-stats .stat__label {
  display: block;
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* 两栏结构 */
.page-faq .faq-layout {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 32px);
}

/* 分类索引 */
.page-faq .faq-index {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 14px;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-index__media {
  margin-bottom: 14px;
}

.page-faq .faq-index__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__item a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__item a:hover,
.page-faq .faq-index__item a:focus-visible {
  border-color: var(--lime);
  color: var(--lime-soft);
  background: var(--panel-2);
}

.page-faq .faq-index__num {
  font-size: 0.6875rem;
  color: var(--lime);
  letter-spacing: 0.08em;
}

/* 章节 */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 112px;
}

.page-faq .faq-section + .faq-section {
  margin-top: clamp(30px, 5vw, 52px);
}

.page-faq .faq-head {
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.page-faq .faq-head .eyebrow {
  margin-bottom: 8px;
}

.page-faq .faq-head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 4.2vw, 2rem);
  letter-spacing: -0.015em;
  line-height: 1.16;
}

.page-faq .faq-head__desc {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.72;
  max-width: 64ch;
}

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

/* 问答折叠组 */
.page-faq .faq-group {
  --accent: var(--lime);
  display: grid;
  gap: 10px;
}

.page-faq .faq-group--quick { --accent: var(--lime); }
.page-faq .faq-group--version { --accent: var(--cyan); }
.page-faq .faq-group--fee { --accent: var(--amber); }
.page-faq .faq-group--account { --accent: var(--lime); }
.page-faq .faq-group--push { --accent: var(--cyan); }

.page-faq .qa {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .qa:hover {
  background: var(--panel-2);
}

.page-faq .qa[open] {
  background: var(--panel-2);
  border-left-color: var(--accent);
}

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__num {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .qa[open] .qa__num {
  color: var(--accent);
}

.page-faq .qa__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 3.2vw, 1.125rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .qa__arrow {
  width: 8px;
  height: 8px;
  margin-right: 4px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__arrow {
  transform: rotate(-135deg);
  border-color: var(--accent);
}

.page-faq .qa__body {
  padding: 0 16px 16px 16px;
  border-top: 1px dashed transparent;
}

.page-faq .qa[open] .qa__body {
  border-top-color: var(--line);
  padding-top: 12px;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .qa__body a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 8px;
}

.page-faq .qa__steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 8px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .qa__steps li::before {
  content: counter(step);
  font-family: var(--font-num);
  font-size: 0.75rem;
  color: var(--lime);
  line-height: 1.9;
}

/* 版本章节图文 */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .faq-split__media {
  order: -1;
}

.page-faq .faq-split__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* 费用速览 */
.page-faq .fee-strip {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .fee-strip li {
  background: var(--panel);
  padding: 14px 14px 12px;
  min-width: 0;
}

.page-faq .fee-strip__num {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.05rem, 3.6vw, 1.5rem);
  color: var(--amber);
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.page-faq .fee-strip__label {
  display: block;
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

/* 联系块 */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-contact__item {
  background: var(--panel);
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
}

.page-faq .faq-contact__k {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-contact__v {
  font-size: 0.9375rem;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-contact__v.mono {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  color: var(--lime-soft);
}

.page-faq .faq-contact__note {
  margin: 12px 0 16px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-contact + .btn {
  display: inline-block;
}

/* 中等屏幕 */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

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

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }

  .page-faq .faq-split__media {
    order: 0;
  }

  .page-faq .faq-split__media img {
    aspect-ratio: 1 / 1;
  }

  .page-faq .faq-contact__item {
    padding: 16px 18px;
  }
}

/* 桌面：左侧常驻索引 */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 272px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky-top);
    padding: 16px;
  }

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

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

  .page-faq .faq-index__item + .faq-index__item {
    margin-top: 4px;
  }

  .page-faq .faq-index__item a {
    display: flex;
    width: 100%;
    box-sizing: border-box;
    white-space: normal;
    border-color: transparent;
    border-left: 2px solid var(--line);
    padding: 9px 10px;
  }

  .page-faq .faq-index__item a:hover,
  .page-faq .faq-index__item a:focus-visible {
    border-left-color: var(--lime);
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
  }

  .page-faq .qa__summary {
    padding: 16px 20px;
  }

  .page-faq .qa__body {
    padding-left: 20px;
    padding-right: 24px;
  }
}

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