.page-faq {
  --faq-line: rgba(56, 242, 210, 0.26);
  --faq-line-soft: rgba(143, 166, 184, 0.22);
  background: var(--db-space);
  color: var(--db-mist);
  overflow-x: hidden;
}

.page-faq a { color: var(--db-cyan); text-decoration: none; }
.page-faq a:hover { text-decoration: underline; text-underline-offset: 3px; }

.page-faq .faq-mono {
  font-family: var(--db-f-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-head {
  position: relative;
  padding: 32px 0 44px;
  background:
    radial-gradient(115% 90% at 12% 0%, rgba(56, 242, 210, 0.14), transparent 62%),
    radial-gradient(90% 70% at 92% 90%, rgba(91, 31, 51, 0.55), transparent 70%),
    linear-gradient(180deg, #071a2f 0%, #05121f 100%);
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, rgba(56, 242, 210, 0.09) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(to bottom, rgba(56, 242, 210, 0.07) 0 1px, transparent 1px 64px);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
  pointer-events: none;
}
.page-faq .faq-head .db-wrap { position: relative; }
.page-faq .faq-head .db-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--db-f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--db-slate);
  margin-bottom: 22px;
}
.page-faq .faq-head .db-crumbs [aria-current="page"] { color: var(--db-amber); }
.page-faq .faq-head .db-eyebrow { color: var(--db-cyan); }
.page-faq .faq-head .db-h1 {
  max-width: 21em;
  margin: 10px 0 16px;
  font-size: clamp(28px, 7vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  font-weight: 900;
}
.page-faq .faq-head .db-lead {
  max-width: 44em;
  color: #cfe3e2;
  font-size: 15px;
  line-height: 1.78;
}
.page-faq .faq-head__meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--faq-line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 13px;
  color: var(--db-slate);
}
.page-faq .faq-head__meta .faq-mono {
  color: var(--db-amber);
  font-size: 16px;
  font-weight: 700;
  margin-right: 4px;
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index { background: var(--db-space); }
.page-faq .faq-index__grid {
  display: grid;
  gap: 28px;
}
.page-faq .faq-index .db-eyebrow { color: var(--db-cyan); }
.page-faq .faq-index .db-h2 {
  margin: 8px 0 14px;
  font-size: clamp(22px, 5vw, 34px);
  line-height: 1.25;
  font-weight: 900;
}
.page-faq .faq-index .db-text {
  color: #c7d9dc;
  font-size: 15px;
  line-height: 1.78;
  max-width: 40em;
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-index__list li { border-bottom: 1px solid var(--faq-line-soft); }
.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 52px;
  padding: 10px 4px 10px 0;
  color: var(--db-mist);
  font-weight: 700;
  font-size: 15px;
  transition: color 0.2s var(--db-ease), padding-left 0.2s var(--db-ease);
}
.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--db-cyan);
  padding-left: 8px;
  text-decoration: none;
}
.page-faq .faq-index__num {
  font-family: var(--db-f-mono);
  font-size: 12px;
  color: var(--db-amber);
  border: 1px solid rgba(255, 181, 71, 0.5);
  border-radius: 2px;
  padding: 2px 6px;
}
.page-faq .faq-index__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, #0b2b33 0%, #1b1440 100%);
  padding: 10px 10px 0;
  box-shadow: 8px 8px 0 rgba(3, 11, 20, 0.85);
}
.page-faq .faq-index__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(143, 166, 184, 0.28);
}
.page-faq .faq-index__figure figcaption {
  padding: 10px 2px 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--db-slate);
  font-family: var(--db-f-mono);
}

/* ---------- 短答案标签页 ---------- */
.page-faq .faq-quick {
  background: linear-gradient(180deg, #05121f 0%, #0b2b33 100%);
  border-top: 1px solid var(--faq-line-soft);
  border-bottom: 1px solid var(--faq-line-soft);
}
.page-faq .faq-quick .db-eyebrow { color: var(--db-amber); }
.page-faq .faq-quick .db-h2 {
  margin: 8px 0 22px;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.25;
  font-weight: 900;
}
.page-faq .faq-tabs__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
}
.page-faq .faq-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--faq-line-soft);
  border-radius: 2px;
  background: rgba(7, 26, 47, 0.85);
  color: #b9cdd4;
  font-family: var(--db-f-display);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s var(--db-ease), color 0.2s var(--db-ease), background 0.2s var(--db-ease);
}
.page-faq .faq-tab__idx {
  font-family: var(--db-f-mono);
  font-size: 11px;
  color: var(--db-slate);
}
.page-faq .faq-tab:hover { border-color: var(--db-cyan); color: var(--db-mist); }
.page-faq .faq-tab:focus-visible { outline: 2px solid var(--db-cyan); outline-offset: 2px; }
.page-faq .faq-tab[aria-selected="true"] {
  border-color: var(--db-cyan);
  background: rgba(56, 242, 210, 0.12);
  color: var(--db-cyan);
  box-shadow: inset 0 -2px 0 var(--db-cyan);
}
.page-faq .faq-tab[aria-selected="true"] .faq-tab__idx { color: var(--db-amber); }

.page-faq .faq-panel {
  margin-top: 20px;
  padding: 20px 18px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--db-cyan);
  background: rgba(7, 26, 47, 0.72);
  box-shadow: 6px 6px 0 rgba(3, 11, 20, 0.6);
}
.page-faq .faq-panel__label {
  margin: 0 0 10px;
  font-family: var(--db-f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--db-amber);
}
.page-faq .faq-panel__lead {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--db-mist);
  font-weight: 700;
}
.page-faq .faq-panel__link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--db-f-mono);
  font-size: 13px;
  border-bottom: 1px solid var(--db-cyan);
  padding-bottom: 2px;
}

.page-faq .faq-steps {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.72;
  color: #c7d9dc;
}
.page-faq .faq-steps--numbered { padding-left: 22px; }
.page-faq .faq-steps li::marker {
  font-family: var(--db-f-mono);
  color: var(--db-cyan);
  font-size: 12px;
}
.page-faq .faq-steps strong { color: var(--db-mist); }

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body { background: var(--db-space); }
.page-faq .faq-body__grid {
  display: grid;
  gap: 28px;
}
.page-faq .faq-nav {
  border: 1px solid var(--faq-line-soft);
  border-top: 2px solid var(--db-cyan);
  padding: 16px 16px 18px;
  background: rgba(11, 43, 51, 0.55);
}
.page-faq .faq-nav__title {
  margin: 0 0 12px;
  font-family: var(--db-f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--db-slate);
}
.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-nav__list a {
  display: block;
  padding: 10px 0 10px 12px;
  min-height: 44px;
  border-left: 2px solid transparent;
  color: #cfe3e2;
  font-size: 14px;
  font-weight: 700;
  transition: border-color 0.2s var(--db-ease), color 0.2s var(--db-ease);
}
.page-faq .faq-nav__list a:hover,
.page-faq .faq-nav__list a:focus-visible {
  border-left-color: var(--db-cyan);
  color: var(--db-cyan);
  text-decoration: none;
}
.page-faq .faq-nav__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--faq-line-soft);
  font-size: 12px;
  line-height: 1.65;
  color: var(--db-slate);
}

.page-faq .faq-sections { display: grid; gap: 26px; }

/* ---------- 问答区块 ---------- */
.page-faq .faq-block {
  position: relative;
  border: 1px solid var(--faq-line-soft);
  background: linear-gradient(180deg, rgba(7, 26, 47, 0.96), rgba(5, 18, 31, 0.96));
  padding: 20px 16px 8px;
  scroll-margin-top: 96px;
}
.page-faq .faq-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--db-cyan);
}
.page-faq .faq-block--subscribe { background: linear-gradient(180deg, rgba(27, 20, 64, 0.94), rgba(7, 26, 47, 0.96)); }
.page-faq .faq-block--subscribe::before { background: var(--db-amber); }
.page-faq .faq-block--query { background: linear-gradient(180deg, rgba(11, 43, 51, 0.94), rgba(5, 18, 31, 0.96)); }
.page-faq .faq-block--feedback { background: linear-gradient(180deg, rgba(90, 31, 51, 0.55), rgba(7, 26, 47, 0.96)); }
.page-faq .faq-block--feedback::before { background: var(--db-magenta); }
.page-faq .faq-block--mobile::before { background: var(--db-amber); }

.page-faq .faq-block__head {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .faq-block__idx {
  font-family: var(--db-f-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--db-amber);
}
.page-faq .faq-block__head .db-h3 {
  margin: 0;
  font-size: clamp(19px, 4.6vw, 26px);
  line-height: 1.3;
  font-weight: 900;
  color: var(--db-mist);
}
.page-faq .faq-block__sub {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--db-slate);
}

.page-faq .faq-acc { border-bottom: 1px solid var(--faq-line-soft); }
.page-faq .faq-acc:last-child { border-bottom: 0; }
.page-faq .faq-q { margin: 0; font-size: inherit; font-weight: inherit; }
.page-faq .db-acc__btn {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 10px;
  width: 100%;
  min-height: 48px;
  padding: 16px 0;
  border: 0;
  background: none;
  color: var(--db-mist);
  font-family: var(--db-f-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s var(--db-ease);
}
.page-faq .db-acc__btn:hover { color: var(--db-cyan); }
.page-faq .db-acc__btn:focus-visible { outline: 2px solid var(--db-cyan); outline-offset: 2px; }
.page-faq .faq-q__num {
  font-family: var(--db-f-mono);
  font-size: 11px;
  color: var(--db-amber);
  border: 1px solid rgba(255, 181, 71, 0.45);
  border-radius: 2px;
  padding: 2px 5px;
  margin-top: 2px;
}
.page-faq .db-acc__sign {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  flex: 0 0 auto;
}
.page-faq .db-acc__sign::before,
.page-faq .db-acc__sign::after {
  content: "";
  position: absolute;
  background: var(--db-cyan);
  transition: transform 0.2s var(--db-ease), opacity 0.2s var(--db-ease);
}
.page-faq .db-acc__sign::before { left: 0; right: 0; top: 7px; height: 2px; }
.page-faq .db-acc__sign::after { top: 0; bottom: 0; left: 7px; width: 2px; }
.page-faq .db-acc__btn[aria-expanded="true"] .db-acc__sign::after { transform: scaleY(0); opacity: 0; }

.page-faq .db-acc__panel {
  padding: 0 0 18px;
  font-size: 14px;
  line-height: 1.78;
  color: #c7d9dc;
}
.page-faq .db-acc__panel > p { margin: 0 0 10px; }
.page-faq .db-acc__panel > p:last-child { margin-bottom: 0; }
.page-faq .db-acc__panel a { color: var(--db-cyan); }

.page-faq .faq-states {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-states li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  line-height: 1.7;
}
.page-faq .faq-states .db-badge {
  font-family: var(--db-f-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  flex: 0 0 auto;
}

/* ---------- 移动端章节 ---------- */
.page-faq .faq-mobile__grid {
  display: grid;
  gap: 18px;
  padding: 16px 0 6px;
}
.page-faq .faq-mobile__steps-title {
  margin: 0 0 10px;
  font-family: var(--db-f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--db-cyan);
}
.page-faq .faq-mobile__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--db-slate);
  padding-left: 12px;
  border-left: 2px solid rgba(56, 242, 210, 0.4);
}
.page-faq .faq-mobile__figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  background: rgba(3, 11, 20, 0.6);
  padding: 8px;
}
.page-faq .faq-mobile__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}
.page-faq .faq-mobile__figure figcaption {
  padding: 8px 2px 4px;
  font-family: var(--db-f-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--db-slate);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact {
  background:
    radial-gradient(100% 120% at 85% 0%, rgba(56, 242, 210, 0.12), transparent 60%),
    linear-gradient(180deg, #0b2b33 0%, #1b1440 100%);
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-contact__card {
  display: grid;
  gap: 24px;
  border: 1px solid var(--faq-line);
  background: rgba(3, 11, 20, 0.42);
  padding: 22px 18px;
  box-shadow: 10px 10px 0 rgba(3, 11, 20, 0.5);
}
.page-faq .faq-contact .db-eyebrow { color: var(--db-amber); }
.page-faq .faq-contact .db-h2 {
  margin: 8px 0 12px;
  font-size: clamp(21px, 5vw, 30px);
  line-height: 1.28;
  font-weight: 900;
}
.page-faq .faq-contact .db-text {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.78;
  color: #c7d9dc;
  max-width: 38em;
}
.page-faq .faq-contact .db-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; }
.page-faq .faq-contact__list { margin: 0; display: grid; gap: 12px; }
.page-faq .faq-contact__pair {
  display: grid;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line-soft);
}
.page-faq .faq-contact__pair:last-child { border-bottom: 0; padding-bottom: 0; }
.page-faq .faq-contact__pair dt {
  font-family: var(--db-f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--db-slate);
}
.page-faq .faq-contact__pair dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--db-mist);
  word-break: break-word;
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-index__list { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 24px; }
  .page-faq .faq-block { padding: 24px 22px 10px; }
  .page-faq .faq-panel { padding: 24px 22px; }
  .page-faq .faq-contact__card { padding: 28px 26px; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: start; }
}

@media (min-width: 900px) {
  .page-faq .faq-head { padding: 44px 0 60px; }
  .page-faq .faq-index__grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: start; gap: 40px; }
  .page-faq .faq-index__figure { margin-top: 6px; }
  .page-faq .faq-body__grid { grid-template-columns: 224px minmax(0, 1fr); gap: 34px; align-items: start; }
  .page-faq .faq-nav { position: sticky; top: 96px; }
  .page-faq .faq-mobile__grid { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: 26px; align-items: start; }
  .page-faq .faq-tabs__list { overflow-x: visible; flex-wrap: wrap; }
  .page-faq .db-acc__btn { font-size: 16px; }
}

@media (min-width: 1100px) {
  .page-faq .faq-body__grid { grid-template-columns: 248px minmax(0, 1fr); gap: 44px; }
  .page-faq .faq-block { padding: 28px 28px 12px; }
  .page-faq .faq-sections { gap: 30px; }
  .page-faq .faq-index__grid { gap: 56px; }
  .page-faq .faq-panel { padding: 28px 30px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>