/* ===== 帮助中心 /help/ —— 编号问答手册 ===== */
.page-faq {
  --faq-line: rgba(76, 240, 218, 0.16);
  --faq-line-soft: rgba(143, 163, 204, 0.24);
  --faq-card: linear-gradient(162deg, rgba(27, 39, 87, 0.96), rgba(11, 18, 48, 0.98));
  background: var(--nx-midnight);
  color: var(--nx-white);
  font-family: var(--nx-body);
  overflow-x: clip;
}

.page-faq a {
  color: inherit;
}

.page-faq .nx-link {
  color: var(--nx-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(76, 240, 218, 0.35);
  transition: border-color var(--nx-t) var(--nx-ease), color var(--nx-t) var(--nx-ease);
}

.page-faq .nx-link:hover {
  border-color: var(--nx-cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4.4vw, 52px) 0 clamp(30px, 5vw, 62px);
  background:
    radial-gradient(880px 420px at 86% -14%, rgba(255, 106, 43, 0.2), transparent 64%),
    radial-gradient(720px 400px at 4% 4%, rgba(76, 240, 218, 0.12), transparent 68%),
    var(--nx-midnight);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: 48%;
  height: 168%;
  background-image: repeating-linear-gradient(105deg, rgba(76, 240, 218, 0.18) 0 1px, transparent 1px 24px);
  transform: skewX(-12deg);
  opacity: 0.32;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(76, 240, 218, 0.55), rgba(255, 106, 43, 0.5), transparent);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-faq .faq-hero__lead {
  min-width: 0;
}

.page-faq .faq-hero__kicker {
  margin: 20px 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--nx-cyan);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--nx-display);
  font-size: clamp(30px, 4.8vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.012em;
  font-weight: 800;
  color: var(--nx-white);
}

.page-faq .faq-hero__intro {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--nx-mist);
}

.page-faq .faq-hero__stats {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  font-size: 14px;
  color: var(--nx-mist);
}

.page-faq .faq-hero__stats span {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__stats b {
  font-family: var(--nx-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--nx-orange);
}

.page-faq .faq-hero__fig {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__frame,
.page-faq .faq-flow__frame {
  border-radius: var(--nx-r-xl);
  border: 1px solid var(--faq-line);
  overflow: hidden;
  box-shadow: var(--nx-shadow);
}

.page-faq .faq-hero__frame img,
.page-faq .faq-flow__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: clamp(28px, 4.6vw, 58px) 0 clamp(48px, 7vw, 96px);
  background:
    linear-gradient(180deg, rgba(20, 30, 72, 0.5) 0%, rgba(11, 18, 48, 0) 40%),
    var(--nx-midnight);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 46px);
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-rail {
  border: 1px solid var(--faq-line);
  border-radius: var(--nx-r-lg);
  background: rgba(20, 30, 72, 0.55);
  padding: 16px 14px 18px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--nx-mist);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.page-faq .faq-rail__nav .nx-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 10px;
  border-radius: var(--nx-r-sm);
  text-decoration: none;
  color: var(--nx-mist);
  font-size: 14.5px;
  line-height: 1.45;
  transition: color var(--nx-t) var(--nx-ease), background var(--nx-t) var(--nx-ease);
}

.page-faq .faq-rail__nav .nx-toc__link:hover {
  color: var(--nx-white);
  background: rgba(76, 240, 218, 0.07);
}

.page-faq .faq-rail__nav .nx-toc__link[data-active] {
  color: var(--nx-cyan);
  background: rgba(76, 240, 218, 0.1);
}

.page-faq .faq-rail__no {
  flex: none;
  font-size: 11px;
  color: var(--nx-orange);
}

/* ---------- 右栏内容流 ---------- */
.page-faq .faq-main {
  display: grid;
  gap: clamp(34px, 5vw, 64px);
  min-width: 0;
}

.page-faq .faq-topic {
  min-width: 0;
}

.page-faq .nx-head__no {
  color: rgba(76, 240, 218, 0.34);
}

.page-faq .nx-head__title {
  color: var(--nx-white);
}

.page-faq .nx-head__desc {
  color: var(--nx-mist);
}

/* ---------- 快速结论卡片 ---------- */
.page-faq .faq-quick__grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-quick__card {
  display: block;
  padding: 16px 18px 18px;
  border-radius: var(--nx-r-md);
  border: 1px solid var(--faq-line);
  background: var(--faq-card);
  text-decoration: none;
  transition: transform var(--nx-t) var(--nx-ease), border-color var(--nx-t) var(--nx-ease), box-shadow var(--nx-t) var(--nx-ease);
}

.page-faq .faq-quick__card:hover,
.page-faq .faq-quick__card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(76, 240, 218, 0.45);
  box-shadow: 0 20px 36px -28px rgba(76, 240, 218, 0.75);
}

.page-faq .faq-quick__tag {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--nx-orange);
}

.page-faq .faq-quick__q {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--nx-white);
}

.page-faq .faq-quick__a {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--nx-mist);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  margin-top: 18px;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1.65;
  color: var(--nx-white);
  transition: color var(--nx-t) var(--nx-ease);
}

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

.page-faq .faq-item__q:hover {
  color: var(--nx-cyan);
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 4px;
  font-size: 12px;
  color: rgba(143, 163, 204, 0.85);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid rgba(76, 240, 218, 0.32);
  border-radius: var(--nx-r-pill);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--nx-cyan);
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__sign::before {
  width: 10px;
  height: 1.6px;
}

.page-faq .faq-item__sign::after {
  width: 1.6px;
  height: 10px;
  transition: opacity var(--nx-t) var(--nx-ease), transform var(--nx-t) var(--nx-ease);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item__a {
  padding: 0 4px 20px 40px;
}

.page-faq .faq-item[open] > .faq-item__a {
  animation: nx-faq-open 260ms var(--nx-ease) both;
}

.page-faq .faq-item__conclusion {
  margin: 0 0 8px;
  padding-left: 12px;
  border-left: 2px solid var(--nx-cyan);
  font-size: 16px;
  line-height: 1.8;
  color: var(--nx-white);
}

.page-faq .faq-item__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--nx-mist);
}

@keyframes nx-faq-open {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 流程图 ---------- */
.page-faq .faq-flow {
  margin: 22px 0 0;
}

/* ---------- 联系引导面板 ---------- */
.page-faq .faq-help {
  margin-top: 20px;
  padding: clamp(22px, 3.4vw, 38px);
  border-radius: var(--nx-r-xl);
  border: 1px solid rgba(42, 28, 20, 0.16);
  background: linear-gradient(150deg, #f3e9d6 0%, #eadcc2 100%);
  color: var(--nx-brown);
}

.page-faq .faq-help__title {
  margin: 0 0 10px;
  font-family: var(--nx-display);
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.28;
  font-weight: 800;
  color: #2a1c14;
}

.page-faq .faq-help__lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(42, 28, 20, 0.78);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-help__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(42, 28, 20, 0.86);
}

.page-faq .faq-help__list li::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-radius: 2px;
  background: var(--nx-red);
  transform: rotate(45deg);
}

.page-faq .faq-help__channels {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed rgba(42, 28, 20, 0.26);
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(42, 28, 20, 0.8);
}

.page-faq .faq-help__channels p {
  margin: 0;
}

.page-faq .faq-help__channels b {
  font-family: var(--nx-mono);
  font-weight: 600;
  color: #2a1c14;
}

.page-faq .faq-help__cta {
  margin-top: 22px;
}

.page-faq .faq-help__aside {
  margin: 18px 0 0;
  max-width: 70ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--nx-mist);
}

/* ---------- 响应式 ---------- */
@media (max-width: 520px) {
  .page-faq .faq-item__a {
    padding-left: 4px;
  }

  .page-faq .faq-item__no {
    padding-top: 1px;
  }

  .page-faq .faq-rail__list {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 560px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 118px;
    border: 0;
    border-left: 1px solid var(--faq-line);
    border-radius: 0;
    background: transparent;
    padding: 4px 0 4px 16px;
  }

  .page-faq .faq-rail__list {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
<<<END>>>