.page-faq {
  --faq-sticky-top: 24px;
  --faq-aside-w: 220px;
  --faq-gap: 32px;
  padding-bottom: 96px;
  background:
    radial-gradient(560px 320px at 88% -6%, rgba(79, 240, 220, .10), transparent 62%),
    radial-gradient(520px 300px at -8% 42%, rgba(255, 122, 26, .07), transparent 66%);
}

/* ---------- 首屏 ---------- */
.faq-hero {
  position: relative;
  padding-top: 28px;
  padding-bottom: 44px;
  overflow: hidden;
}
.faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-line) 22%, var(--ink-line) 78%, transparent);
  opacity: .7;
  pointer-events: none;
}
.faq-breadcrumb {
  margin-bottom: 24px;
}
.faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}
.faq-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 10px 0 18px;
  max-width: 16em;
}
.faq-hero__lead h1::after {
  content: "";
  display: block;
  width: 68px;
  height: 4px;
  margin-top: 20px;
  background: var(--cyan);
  border-radius: 2px;
}
.faq-hero__lead .lede {
  max-width: 46em;
  color: var(--text-mute);
  font-size: 16px;
  line-height: 1.8;
  margin: 0;
}

.faq-hero__quick {
  position: relative;
  background: linear-gradient(150deg, var(--ink-panel), var(--ink-navy));
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-lg);
  padding: 22px 22px 20px;
  overflow: hidden;
}
.faq-hero__quick::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -30%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 240, 220, .16), transparent 70%);
  pointer-events: none;
}
.faq-hero__quick-title {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--text-mute);
  text-transform: uppercase;
}
.faq-hero__version {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  color: var(--cyan);
}
.faq-hero__version .version-tag__key {
  font-size: 18px;
  opacity: .7;
}
.faq-hero__version .version-tag__val {
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
}
.faq-hero__quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 14px;
  color: var(--text-mute);
}
.faq-hero__quick-list li {
  padding-left: 16px;
  position: relative;
}
.faq-hero__quick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-deep);
}
.page-faq .mono {
  font-family: var(--font-mono);
  font-size: .95em;
  color: var(--text);
  letter-spacing: .02em;
}

/* ---------- 主体两栏 ---------- */
.faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-top: 40px;
}

/* 左侧分组导航 */
.faq-aside {
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  background: rgba(17, 30, 56, .55);
  padding: 18px 18px 20px;
}
.faq-aside__caption {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-weak);
}
.faq-aside__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.faq-aside__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 10px;
  color: var(--text-mute);
  font-size: 14px;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.faq-aside__link:hover,
.faq-aside__link:focus-visible {
  background: rgba(79, 240, 220, .08);
  color: var(--text);
}
.faq-aside__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-deep);
  min-width: 20px;
}
.faq-aside__hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--ink-line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-weak);
}

/* 右侧问题流 */
.faq-stream {
  display: grid;
  gap: 40px;
  min-width: 0;
}

/* 筛选条 */
.faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.faq-filter__status {
  flex-basis: 100%;
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: .04em;
}

/* 分组 */
.faq-section {
  scroll-margin-top: 90px;
}
.faq-section__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  column-gap: 14px;
  row-gap: 6px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--ink-line);
}
.faq-section__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  opacity: .85;
}
.faq-section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.1;
  color: var(--text);
  margin: 0;
}
.faq-section__note {
  grid-column: 2 / 3;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-mute);
}

/* 折叠问答 */
.faq-list {
  display: grid;
  gap: 10px;
}
.faq-item {
  position: relative;
  border-radius: var(--radius-md);
  border: 1px solid var(--ink-line);
  background: rgba(11, 20, 38, .72);
  overflow: hidden;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background .25s var(--ease);
}
.faq-item[data-expanded] {
  border-color: rgba(79, 240, 220, .42);
  background: rgba(17, 30, 56, .82);
}
.faq-item[data-expanded]::before {
  background: var(--cyan);
}
.faq-item__q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}
.faq-item__toggle {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 16px 16px 16px 20px;
  background: none;
  border: 0;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.55;
  transition: color .2s var(--ease);
}
.faq-item__toggle:hover {
  color: var(--cyan);
}
.faq-item__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan-deep);
  border: 1px solid var(--ink-line);
  border-radius: 6px;
  min-width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: .04em;
}
.faq-item[data-expanded] .faq-item__idx {
  color: var(--cyan);
  border-color: rgba(79, 240, 220, .4);
}
.faq-item__text {
  min-width: 0;
}
.faq-item__sign {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}
.faq-item__sign::before,
.faq-item__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--text-mute);
  transition: transform .25s var(--ease), background .25s var(--ease), opacity .25s var(--ease);
}
.faq-item__sign::before {
  width: 14px;
  height: 1.6px;
  transform: translate(-50%, -50%);
}
.faq-item__sign::after {
  width: 1.6px;
  height: 14px;
  transform: translate(-50%, -50%);
}
.faq-item[data-expanded] .faq-item__sign::before {
  background: var(--cyan);
}
.faq-item[data-expanded] .faq-item__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
  background: var(--cyan);
}

.faq-item__a {
  padding: 0 20px 20px 56px;
}
.faq-item__inner > p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mute);
}
.faq-item__inner > p:last-child {
  margin-bottom: 0;
}
.faq-item__inner a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 240, 220, .35);
}
.faq-item__inner a:hover {
  color: var(--cyan-deep);
}

/* 无 JS 时详情仍可读 */
.faq-item:not([data-expanded]) .faq-item__a {
  display: block;
}

/* 步骤列表 */
.faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 4px 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding: 10px 12px 10px 44px;
  border-radius: 10px;
  background: rgba(30, 48, 84, .32);
  border: 1px solid rgba(30, 48, 84, .8);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-mute);
}
.faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .02em;
}

/* 配图 */
.faq-figure {
  margin: 14px 0 16px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(17, 30, 56, .9), rgba(6, 11, 24, .9));
  border: 1px solid var(--ink-line);
}
.faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
}
.faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-weak);
}

/* 客服渠道卡 */
.faq-channel {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 122, 26, .35);
  background:
    radial-gradient(420px 240px at 100% 0%, rgba(255, 122, 26, .16), transparent 62%),
    linear-gradient(160deg, rgba(17, 30, 56, .95), rgba(6, 11, 24, .95));
  padding: 26px 22px;
  overflow: hidden;
}
.faq-channel__head {
  margin-bottom: 22px;
}
.faq-channel__eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange-mist);
}
.faq-channel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4.4vw, 30px);
  line-height: 1.2;
  color: var(--text);
}
.faq-channel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.faq-channel__cell {
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  background: rgba(6, 11, 24, .55);
  padding: 16px;
  display: grid;
  gap: 6px;
  align-content: start;
}
.faq-channel__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-weak);
}
.faq-channel__value {
  margin: 0;
  font-size: 15px;
  color: var(--text);
  word-break: break-word;
}
.faq-channel__value.mono {
  font-family: var(--font-mono);
  color: var(--cyan);
}
.faq-channel__value a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 240, 220, .35);
}
.faq-channel__value a:hover {
  color: var(--cyan-deep);
}
.faq-channel__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-mute);
}

/* ---------- 窄屏收紧 ---------- */
@media (max-width: 599px) {
  .faq-hero__lead h1 {
    font-size: clamp(26px, 8.6vw, 40px);
  }
  .faq-item__a {
    padding-left: 20px;
    padding-right: 16px;
  }
  .faq-item__toggle {
    padding-right: 12px;
    gap: 10px;
    font-size: 15px;
  }
  .faq-hero__version .version-tag__val {
    font-size: 32px;
  }
  .faq-channel {
    padding: 22px 16px;
  }
}

/* ---------- 平板 / 桌面 ---------- */
@media (min-width: 768px) {
  .faq-hero {
    padding-top: 44px;
    padding-bottom: 60px;
  }
  .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: 44px;
  }
  .faq-body {
    padding-top: 56px;
    grid-template-columns: var(--faq-aside-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
  .faq-aside {
    position: sticky;
    top: var(--faq-sticky-top);
    padding: 22px 20px 24px;
  }
  .faq-section__head {
    grid-template-columns: auto 1fr auto;
    column-gap: 18px;
    align-items: baseline;
  }
  .faq-section__note {
    grid-column: 2 / 4;
  }
  .faq-channel__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
  .faq-channel {
    padding: 32px 30px;
  }
}

@media (min-width: 1080px) {
  .page-faq {
    --faq-aside-w: 232px;
  }
  .faq-hero__lead h1 {
    font-size: clamp(40px, 4.4vw, 62px);
  }
  .faq-item__toggle {
    padding: 18px 22px 18px 22px;
    font-size: 16.5px;
  }
  .faq-item__a {
    padding: 0 24px 22px 58px;
  }
  .faq-item__inner > p {
    font-size: 15.5px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}
<<<END>>>