/* ===== 帮助中心页面专属样式 ===== */
.page-faq {
  position: relative;
  padding: 32px 0 80px;
  background:
    linear-gradient(rgba(212, 0, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 0, 255, .045) 1px, transparent 1px),
    var(--black);
  background-size: 32px 32px;
  color: var(--silver);
  font-family: var(--font-body);
}

.page-faq .breadcrumb {
  margin-bottom: 28px;
}

/* ===== 页头 ===== */
.page-faq__head {
  display: grid;
  gap: 28px;
  margin-bottom: 48px;
}

.page-faq__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--acid);
}

.page-faq__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(30px, 6vw, 48px);
  line-height: 1.18;
  color: var(--paper);
  transform: skewX(-5deg);
  text-shadow: var(--glow-purple);
}

.page-faq__title span {
  display: inline-block;
  color: var(--purple);
}

.page-faq__lede {
  margin: 0 0 20px;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--silver);
}

.page-faq__trust {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-faq__trust li {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--blue);
}

.page-faq__trust li::before {
  content: "▹ ";
  color: var(--acid);
}

.page-faq .page-faq__hero {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  margin: 0;
  width: 100%;
}

.page-faq__hero img,
.page-faq__side-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 控制台区 ===== */
.page-faq__console-grid {
  display: grid;
  gap: 32px;
  margin-bottom: 64px;
}

.page-faq__list-pane {
  position: relative;
  padding: 24px 20px;
  background: var(--ink);
  border: 1px solid var(--dark-gray);
}

.page-faq__list-pane::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 4px;
  background: linear-gradient(90deg, var(--purple), var(--blue));
}

.page-faq__accordion {
  counter-reset: faq-q;
  margin-top: 24px;
}

.page-faq__group {
  margin: 28px 0 12px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--acid);
}

.page-faq__group:first-child {
  margin-top: 0;
}

.page-faq__group::before {
  content: "// ";
  color: var(--purple);
}

.page-faq__item {
  counter-increment: faq-q;
  margin-bottom: 10px;
  border: 1px solid var(--dark-gray);
  background: var(--black);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq__item[open] {
  border-color: var(--purple);
  box-shadow: var(--glow-purple);
}

.page-faq__item summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--silver);
  transition: color .2s var(--ease), background .2s var(--ease);
}

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

.page-faq__item summary::before {
  content: "Q" counter(faq-q, decimal-leading-zero);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 52px;
  height: 26px;
  background: var(--purple);
  color: var(--black);
  font-size: 13px;
  font-weight: 700;
  transform: skewX(-8deg);
}

.page-faq__item summary::after {
  content: "+";
  margin-left: auto;
  font-size: 18px;
  color: var(--purple);
  transition: transform .2s var(--ease);
}

.page-faq__item[open] summary::after {
  content: "−";
}

.page-faq__item summary:hover,
.page-faq__item summary:focus-visible {
  color: var(--paper);
  background: rgba(212, 0, 255, .08);
}

.page-faq__item summary:hover::before {
  background: var(--blue);
}

.page-faq__answer {
  padding: 14px 16px 16px 78px;
  border-top: 1px dashed var(--dark-gray);
  background: rgba(26, 26, 30, .9);
}

.page-faq__answer p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

/* 右侧控制台 */
.page-faq__side-pane {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px 20px;
  background: var(--ink);
  border: 1px solid var(--dark-gray);
}

.page-faq__side-pane::after {
  content: "";
  position: absolute;
  right: -48px;
  bottom: -48px;
  width: 160px;
  height: 160px;
  background:
    linear-gradient(135deg, rgba(0, 229, 255, .14) 25%, transparent 25%),
    linear-gradient(135deg, transparent 75%, rgba(0, 229, 255, .14) 75%);
  background-size: 24px 24px;
  pointer-events: none;
}

.page-faq .page-faq__side-img {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  margin: 0;
  width: 100%;
  max-width: 300px;
}

.page-faq__ticket-title {
  margin: 12px 0 14px;
  font-family: var(--font-head);
  font-size: 20px;
  color: var(--paper);
}

.page-faq__ticket-list {
  margin: 0 0 20px;
  padding: 0;
  border-top: 1px solid var(--dark-gray);
}

.page-faq__ticket-list div {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--dark-gray);
}

.page-faq__ticket-list dt {
  font-size: 14px;
  color: var(--silver);
}

.page-faq__ticket-list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--blue);
}

.page-faq__ticket-note {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.page-faq__ticket-note a {
  font-size: 14px;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease), padding-left .2s var(--ease);
}

.page-faq__ticket-note a:hover,
.page-faq__ticket-note a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--blue);
  padding-left: 6px;
}

.page-faq__ticket-btn {
  align-self: flex-start;
}

/* ===== 专题区 ===== */
.page-faq__topics {
  margin-bottom: 64px;
}

.page-faq__topic-grid {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-faq__topic-card {
  padding: 24px 22px;
}

.page-faq__topic-card h3 {
  margin: 14px 0 10px;
  font-family: var(--font-head);
  font-size: 22px;
  color: var(--paper);
}

.page-faq__topic-card p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq__steps {
  counter-reset: faq-step;
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq__steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--silver);
}

.page-faq__steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--purple);
}

.page-faq__facts {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq__facts li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--silver);
}

.page-faq__facts li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--acid);
}

.page-faq__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--purple);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), letter-spacing .2s var(--ease);
}

.page-faq__link:hover,
.page-faq__link:focus-visible {
  border-bottom-color: var(--purple);
  letter-spacing: .04em;
}

/* ===== 联系支持 ===== */
.page-faq__support-box {
  position: relative;
  display: grid;
  gap: 28px;
  padding: 36px 24px;
  background:
    linear-gradient(135deg, rgba(212, 0, 255, .18), rgba(0, 229, 255, .08)),
    var(--ink);
  border: 1px solid var(--purple);
}

.page-faq__support-box::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 24px solid var(--purple);
  border-left: 24px solid transparent;
}

.page-faq__support-title {
  margin: 12px 0 12px;
  font-family: var(--font-head);
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.3;
  color: var(--paper);
  transform: skewX(-4deg);
}

.page-faq__support-copy p {
  margin: 0 0 16px;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq__support-contacts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq__support-contacts li {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--blue);
}

.page-faq__support-contacts li::before {
  content: "▹ ";
  color: var(--acid);
}

.page-faq__support-action {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

/* ===== 桌面断点 ===== */
@media (min-width: 900px) {
  .page-faq {
    padding-top: 40px;
  }

  .page-faq__head {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: center;
    gap: 44px;
    margin-bottom: 56px;
  }

  .page-faq__console-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq__list-pane {
    padding: 32px 28px;
  }

  .page-faq__side-pane {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 28px 24px;
  }

  .page-faq__topic-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .page-faq__support-box {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: center;
    padding: 44px 40px;
  }
}