.page-faq {
  --faq-line: rgba(10, 16, 23, 0.14);
  --faq-ink-soft: #44566a;
  --faq-body-color: #26333f;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(18px, 3.4vw, 32px) 0 clamp(32px, 5vw, 60px);
  background:
    radial-gradient(90% 120% at 90% -10%, rgba(184, 255, 61, 0.16), transparent 62%),
    radial-gradient(70% 90% at 0% 110%, rgba(255, 176, 32, 0.1), transparent 60%),
    var(--ink-900);
  color: var(--frost);
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
  margin-top: 14px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 14px;
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--frost);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(232, 242, 255, 0.82);
}

.page-faq .faq-hero__figure {
  margin: 0 auto;
  max-width: 340px;
  padding: 8px;
  border: 1px solid rgba(184, 255, 61, 0.3);
  border-radius: var(--radius);
  background: rgba(11, 39, 69, 0.5);
  box-shadow: 10px 10px 0 rgba(6, 20, 38, 0.55);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
}

.page-faq .faq-hero__cap {
  display: block;
  padding: 8px 2px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 三条快答 ---------- */
.page-faq .faq-quick {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .faq-quick__item {
  display: grid;
  gap: 5px;
  padding: 15px 16px 14px;
  border: 1px solid rgba(155, 176, 198, 0.28);
  border-radius: var(--radius);
  background: rgba(11, 39, 69, 0.55);
  color: inherit;
  text-decoration: none;
  transition: transform var(--speed) ease-out, border-color var(--speed) ease-out, background var(--speed) ease-out;
}

.page-faq .faq-quick__item:hover {
  transform: translateY(-2px);
  border-color: var(--amber);
  background: rgba(11, 39, 69, 0.88);
}

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

.page-faq .faq-quick__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-faq .faq-quick__val {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.2vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--frost);
}

.page-faq .faq-quick__text {
  font-size: 13.5px;
  line-height: 1.62;
  color: var(--mist);
}

.page-faq .faq-quick__go {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(32px, 5vw, 60px) 0 clamp(40px, 6vw, 72px);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

/* 分类索引 */
.page-faq .faq-index {
  padding: 16px;
  border: 1px solid rgba(184, 255, 61, 0.22);
  border-radius: var(--radius);
  background: var(--ink-900);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  border-radius: 3px;
  color: var(--frost);
  font-size: 13.5px;
  text-decoration: none;
  transition: background var(--speed) ease-out, border-color var(--speed) ease-out;
}

.page-faq .faq-index__link:hover {
  background: rgba(184, 255, 61, 0.1);
  border-left-color: var(--lime);
}

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

.page-faq .faq-index__n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

/* 分组 */
.page-faq .faq-cat {
  margin-bottom: clamp(28px, 4vw, 44px);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-cat__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 8px;
  margin-bottom: 10px;
  border-bottom: 2px solid var(--ink-900);
}

.page-faq .faq-cat__n {
  flex: none;
  padding: 1px 7px;
  border-radius: 2px;
  background: var(--ink-900);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-cat__note {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--faq-ink-soft);
}

/* 折叠面板 */
.page-faq .faq-item {
  margin-bottom: 8px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: #ffffff;
  transition: border-color var(--speed) ease-out, box-shadow var(--speed) ease-out;
}

.page-faq .faq-item[open] {
  border-color: var(--ink-500);
  box-shadow: 3px 3px 0 rgba(20, 69, 111, 0.14);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 15px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  transition: color var(--speed) ease-out;
}

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

.page-faq .faq-item summary:hover {
  color: var(--ink-500);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.15;
  color: var(--ink-500);
}

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

.page-faq .faq-item__code {
  flex: none;
  margin-top: 2px;
  padding: 1px 5px;
  border: 1px solid rgba(20, 69, 111, 0.3);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-500);
}

.page-faq .faq-a {
  padding: 12px 15px 15px;
  border-top: 1px solid rgba(10, 16, 23, 0.08);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--faq-body-color);
}

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

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

.page-faq .faq-rel {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-rel__link {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid rgba(20, 69, 111, 0.35);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--ink-500);
  text-decoration: none;
  transition: background var(--speed) ease-out, color var(--speed) ease-out, border-color var(--speed) ease-out;
}

.page-faq .faq-rel__link:hover {
  background: var(--ink-700);
  border-color: var(--ink-700);
  color: var(--frost);
}

.page-faq .faq-rel__link:focus-visible {
  outline: 2px solid var(--ink-500);
  outline-offset: 2px;
}

/* ---------- 底部联系 ---------- */
.page-faq .faq-help {
  padding: clamp(36px, 6vw, 72px) 0;
  background:
    linear-gradient(160deg, rgba(20, 69, 111, 0.55) 0%, transparent 55%),
    var(--ink-900);
  color: var(--frost);
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

.page-faq .faq-help h2 {
  margin: 8px 0 12px;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--frost);
}

.page-faq .faq-help__lead {
  margin: 0 0 18px;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(232, 242, 255, 0.8);
}

.page-faq .faq-channels {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-channels li {
  padding: 6px 0 6px 12px;
  border-left: 2px solid rgba(184, 255, 61, 0.5);
}

.page-faq .faq-channels__k {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-faq .faq-channels__v {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--frost);
  word-break: break-word;
}

.page-faq .faq-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-faq .faq-copy__fb {
  font-size: 13px;
  color: var(--lime);
}

.page-faq .faq-help__note {
  margin: 0 0 18px;
  max-width: 56ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

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

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .faq-help .sd-btn--ghost {
  border-color: rgba(232, 242, 255, 0.42);
  color: var(--frost);
}

.page-faq .faq-help .sd-btn--ghost:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.page-faq .faq-help__figure {
  margin: 0;
  padding: 8px;
  border: 1px solid rgba(155, 176, 198, 0.3);
  border-radius: var(--radius);
  background: rgba(11, 39, 69, 0.5);
}

.page-faq .faq-help__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 700px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
  }

  .page-faq .faq-hero__figure {
    margin: 0;
    max-width: none;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 48px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    padding: 18px 16px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .page-faq .faq-index__link {
    border-left-color: rgba(155, 176, 198, 0.28);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__item,
  .page-faq .faq-item,
  .page-faq .faq-rel__link,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-quick__item:hover {
    transform: none;
  }
}
<<<END>>>