/* ============ 帮助中心 · 页面专属样式 ============ */
.page-faq {
  --faq-nav-w: 268px;
  --faq-answer-size: 14.5px;
  position: relative;
  padding-bottom: clamp(48px, 7vw, 96px);
  color: var(--hh-text);
}

.page-faq .faq-sep {
  margin: 0 6px;
  color: var(--hh-rule);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 26px;
  margin-top: 18px;
  padding: clamp(22px, 4vw, 52px);
  border: 1px solid var(--hh-rule);
  border-radius: var(--hh-radius-lg);
  background:
    radial-gradient(120% 150% at 92% -12%, rgba(107, 75, 201, 0.36), transparent 62%),
    linear-gradient(158deg, var(--hh-panel) 0%, var(--hh-void) 78%);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--hh-cyan), var(--hh-dusk));
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--hh-cyan), var(--hh-orange) 58%, transparent);
}

.page-faq .faq-hero__body {
  display: grid;
  gap: 16px;
  align-content: center;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(32px, 5.2vw, 60px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--hh-white);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.78;
  color: var(--hh-text-soft);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stats .hh-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .hh-stat__value {
  font-family: var(--hh-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--hh-white);
}

.page-faq .hh-stat__label {
  font-size: 13px;
  color: var(--hh-muted);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--hh-rule);
  border-radius: var(--hh-radius);
  background: var(--hh-panel-2);
  overflow: hidden;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
  margin-top: clamp(30px, 4.5vw, 58px);
}

.page-faq .faq-side__panel {
  padding: 18px;
  border: 1px solid var(--hh-rule);
  border-radius: var(--hh-radius);
  background: var(--hh-panel);
}

.page-faq .faq-nav {
  display: grid;
  gap: 2px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--hh-pill);
  color: var(--hh-text-soft);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease,
    background-color 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-nav a:hover,
.page-faq .faq-nav a:focus-visible {
  color: var(--hh-white);
  border-color: rgba(34, 224, 214, 0.55);
  background: rgba(34, 224, 214, 0.08);
  transform: translateX(2px);
}

.page-faq .faq-nav__idx {
  font-family: var(--hh-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--hh-orange);
}

/* ---------- 章节头部 ---------- */
.page-faq .faq-block {
  margin-bottom: clamp(34px, 5vw, 60px);
  scroll-margin-top: calc(var(--hh-header-h) + 24px);
}

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

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hh-rule);
}

.page-faq .faq-block__head h2 {
  margin: 0 0 6px;
  font-size: clamp(21px, 2.7vw, 31px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--hh-white);
}

.page-faq .faq-block__note {
  margin: 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--hh-muted);
}

/* ---------- 新手三步 ---------- */
.page-faq .faq-start {
  display: grid;
  gap: 26px;
  margin-bottom: 22px;
}

.page-faq .faq-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 18px;
  border: 1px solid var(--hh-rule);
  border-left: 3px solid var(--hh-cyan);
  border-radius: var(--hh-radius-sm);
  background: var(--hh-panel);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-step:hover {
  border-color: var(--hh-cyan);
  background: var(--hh-panel-2);
}

.page-faq .faq-step__num {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--hh-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--hh-orange);
}

.page-faq .faq-step h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--hh-white);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--hh-text-soft);
}

.page-faq .faq-start__media {
  margin: 0;
}

.page-faq .faq-start__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--hh-rule);
  border-radius: var(--hh-radius);
  object-fit: cover;
}

.page-faq .faq-start__cap {
  margin: 10px 2px 0;
  font-family: var(--hh-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--hh-muted);
}

/* ---------- 问答折叠卡片 ---------- */
.page-faq .faq-cards {
  display: grid;
  gap: 10px;
}

.page-faq .faq-card {
  border: 1px solid var(--hh-rule);
  border-radius: var(--hh-radius-sm);
  background: var(--hh-panel);
  overflow: hidden;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-card:hover {
  border-color: rgba(34, 224, 214, 0.45);
}

.page-faq .faq-card[open] {
  border-color: var(--hh-cyan);
  background: var(--hh-panel-2);
}

.page-faq .faq-card__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--hh-white);
  transition: color 0.18s ease;
}

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

.page-faq .faq-card__summary::marker {
  content: "";
}

.page-faq .faq-card__summary:hover {
  color: var(--hh-cyan);
}

.page-faq .faq-card__summary:focus-visible {
  outline: 2px solid var(--hh-cyan);
  outline-offset: -3px;
  border-radius: var(--hh-radius-sm);
}

.page-faq .faq-card__idx {
  padding: 3px 9px;
  border: 1px solid rgba(255, 106, 43, 0.38);
  border-radius: var(--hh-pill);
  font-family: var(--hh-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--hh-orange);
  white-space: nowrap;
  transition: color 0.18s ease, background-color 0.18s ease,
    border-color 0.18s ease;
}

.page-faq .faq-card[open] .faq-card__idx {
  color: var(--hh-void);
  background: var(--hh-orange);
  border-color: var(--hh-orange);
}

.page-faq .faq-card__sign {
  position: relative;
  width: 12px;
  height: 12px;
}

.page-faq .faq-card__sign::before,
.page-faq .faq-card__sign::after {
  content: "";
  position: absolute;
  background: var(--hh-muted);
  border-radius: 2px;
  transition: transform 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-card__sign::before {
  left: 0;
  right: 0;
  top: 5px;
  height: 2px;
}

.page-faq .faq-card__sign::after {
  top: 0;
  bottom: 0;
  left: 5px;
  width: 2px;
}

.page-faq .faq-card[open] .faq-card__sign::before,
.page-faq .faq-card[open] .faq-card__sign::after {
  background: var(--hh-cyan);
}

.page-faq .faq-card[open] .faq-card__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-card__body {
  padding: 4px 20px 20px;
  border-top: 1px dashed var(--hh-rule);
}

.page-faq .faq-card__body p {
  margin: 12px 0 0;
  max-width: 38em;
  font-size: var(--faq-answer-size);
  line-height: 1.78;
  color: var(--hh-text-soft);
}

.page-faq .faq-step a,
.page-faq .faq-card__body a {
  color: var(--hh-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 兜底引导 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 14px;
  padding: clamp(22px, 3.4vw, 38px);
  border-radius: var(--hh-radius-lg);
}

.page-faq .faq-cta h2 {
  margin: 0;
  font-size: clamp(22px, 2.7vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--hh-white);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--hh-text-soft);
}

.page-faq .faq-cta .hh-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) and (max-width: 1039px) {
  .page-faq .faq-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-start {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 32px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 42px;
  }

  .page-faq .faq-hero h1 {
    max-width: 12em;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--hh-header-h) + 24px);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-card__summary {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
    padding: 14px 15px;
    font-size: 14.5px;
  }

  .page-faq .faq-card__sign {
    display: none;
  }

  .page-faq .faq-card__body {
    padding: 2px 15px 16px;
  }

  .page-faq .faq-step {
    padding: 14px 15px;
    gap: 3px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-nav a,
  .page-faq .faq-card,
  .page-faq .faq-card__summary,
  .page-faq .faq-card__idx,
  .page-faq .faq-card__sign::before,
  .page-faq .faq-card__sign::after,
  .page-faq .faq-step {
    transition: none;
  }
}