.page-faq {
  --faq-sidebar-width: 300px;
  position: relative;
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(57,255,20,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57,255,20,0.03) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* ===== 帮助中心顶部 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 36px 0 32px;
  border-bottom: 2px solid var(--border);
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 55%, var(--accent-2) 55%, var(--accent-2) 100%);
  opacity: 0.75;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(57,255,20,0.16);
  border-radius: 50%;
  pointer-events: none;
}
.page-faq .faq-hero__grid {
  margin-top: 24px;
}
.page-faq .faq-hero__text h1 {
  font-family: var(--font-heading);
  font-size: clamp(34px, 9vw, 58px);
  line-height: 1.06;
  letter-spacing: 0.02em;
  margin: 12px 0 16px;
  text-transform: uppercase;
}
.page-faq .faq-hero__lead {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
  max-width: 640px;
  margin: 0;
}
.page-faq .faq-search__box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.page-faq .faq-search__box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(57,255,20,0.12);
}
.page-faq .faq-search__icon {
  color: var(--accent);
  flex-shrink: 0;
}
.page-faq .faq-search__input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
}
.page-faq .faq-search__input::placeholder {
  color: var(--text-dim);
}
.page-faq .faq-search__cta {
  display: block;
  margin-top: 10px;
  text-align: center;
  text-decoration: none;
}

/* ===== 双栏布局 ===== */
.page-faq .faq-layout {
  padding: 36px 0;
}
.page-faq .faq-layout__sidebar {
  margin-bottom: 32px;
}
.page-faq .faq-cat__list {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}
.page-faq .faq-cat__item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transform: skewX(-3deg);
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}
.page-faq .faq-cat__item > * {
  transform: skewX(3deg);
}
.page-faq .faq-cat__item:hover {
  background: #132241;
  color: var(--text);
  transform: skewX(-3deg) translateX(4px);
}
.page-faq .faq-cat__item[aria-selected="true"] {
  background: linear-gradient(90deg, rgba(57,255,20,0.12), rgba(57,255,20,0.02));
  border-left-color: var(--accent);
  color: var(--text);
}
.page-faq .faq-cat__icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #0A1428;
  border-radius: 4px;
  color: var(--accent);
  flex-shrink: 0;
}
.page-faq .faq-cat__item[aria-selected="true"] .faq-cat__icon {
  color: var(--accent-2);
}
.page-faq .faq-cat__count {
  margin-left: auto;
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--accent-2);
}

/* ===== 刷新说明图 ===== */
.page-faq .faq-refresh-fig {
  margin: 24px 0 0;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  padding: 12px;
}
.page-faq .faq-refresh-fig img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(57,255,20,0.2);
}
.page-faq .faq-refresh-fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
  letter-spacing: 0.04em;
}

/* ===== 问答面板 ===== */
.page-faq .faq-panel[hidden] {
  display: none;
}
.page-faq .faq-panel__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}
.page-faq .faq-panel__head h3 {
  font-family: var(--font-heading);
  font-size: 28px;
  margin: 0;
  text-transform: uppercase;
}

/* ===== 手风琴 ===== */
.page-faq .faq-qa {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  margin-bottom: 12px;
  transition: border-color 0.25s, background 0.25s;
}
.page-faq .faq-qa[open] {
  border-left-color: var(--accent-2);
  background: linear-gradient(180deg, #0F1D3A, #122242);
}
.page-faq .faq-qa summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-qa summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-qa summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-heading);
  font-size: 22px;
  line-height: 1;
  color: var(--accent);
  transition: transform 0.25s, color 0.25s;
}
.page-faq .faq-qa[open] summary::after {
  transform: rotate(45deg);
  color: var(--accent-2);
}
.page-faq .faq-qa__title {
  flex: 1;
}
.page-faq .faq-qa__body {
  padding: 14px 18px 18px;
  border-top: 1px solid rgba(57,255,20,0.15);
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.8;
}
.page-faq .faq-qa__body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 步骤序列 ===== */
.page-faq .faq-steps {
  margin: 0;
  padding-left: 0;
  list-style: none;
  counter-reset: faq-step;
  display: grid;
  gap: 10px;
}
.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 40px;
}
.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  background: rgba(57,255,20,0.1);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ===== 热门问题 ===== */
.page-faq .faq-hot {
  padding: 40px 0 48px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(15,29,58,0.55), rgba(15,29,58,0.25));
}
.page-faq .faq-hot__grid {
  margin-top: 24px;
}
.page-faq .faq-hot__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-hot__list li {
  margin-bottom: 12px;
}
.page-faq .faq-hot__rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: var(--accent-2);
  color: var(--bg);
  font-family: var(--font-heading);
  font-size: 16px;
  flex-shrink: 0;
}
.page-faq .faq-hot__visual {
  margin-top: 8px;
}
.page-faq .faq-hot__visual h3 {
  font-family: var(--font-heading);
  font-size: 24px;
  margin: 0 0 14px;
  color: var(--text);
}
.page-faq .faq-hot__fig {
  margin: 0;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  padding: 10px;
}
.page-faq .faq-hot__fig img {
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(0.9) contrast(1.05);
}
.page-faq .faq-hot__tip {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-dim);
  background: rgba(255,102,0,0.08);
  border-left: 3px solid var(--accent-2);
  padding: 10px 12px;
}

/* ===== 联系支持 ===== */
.page-faq .faq-support {
  padding: 40px 0 48px;
}
.page-faq .faq-support__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}
.page-faq .faq-support__head .faq-support__head-link {
  text-decoration: none;
}
.page-faq .faq-support__grid {
  display: grid;
  gap: 14px;
  margin: 0;
}
.page-faq .faq-support__card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 20px;
}
.page-faq .faq-support__card dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.page-faq .faq-support__card dd {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  word-break: break-all;
}
.page-faq .faq-support__note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}
.page-faq .faq-support__note a {
  color: var(--accent);
}
.page-faq .faq-support__privacy {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-dim);
}
.page-faq .faq-support__privacy a {
  color: var(--accent);
}

/* ===== 显现动画（渐进增强） ===== */
.page-faq .has-js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.page-faq .has-js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 平板布局 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero__grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 32px;
    align-items: end;
    margin-top: 32px;
  }
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: start;
    padding: 48px 0;
  }
  .page-faq .faq-layout__sidebar {
    position: sticky;
    top: 24px;
  }
  .page-faq .faq-hot__grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    align-items: start;
  }
  .page-faq .faq-hot__visual {
    margin-top: 0;
  }
  .page-faq .faq-support__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

/* ===== 桌面布局 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 56px 0 48px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: 1fr 380px;
  }
  .page-faq .faq-hero__text h1 {
    font-size: clamp(42px, 5vw, 64px);
  }
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-sidebar-width) 1fr;
    gap: 52px;
    padding: 56px 0;
  }
  .page-faq .faq-hot {
    padding: 56px 0 64px;
  }
  .page-faq .faq-support {
    padding: 56px 0 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .has-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}