/* ===== 帮助中心页专属样式 ===== */
.page-faq {
  --faq-gutter: clamp(20px, 4vw, 48px);
  scroll-behavior: smooth;
  background: var(--color-light-gray);
  color: var(--color-dark-gray);
}

/* ---- 首屏 Hero ---- */
.page-faq .faq-hero {
  position: relative;
  background:
    radial-gradient(ellipse at 84% 12%, rgba(0, 255, 136, 0.16) 0%, rgba(0, 255, 136, 0) 42%),
    linear-gradient(135deg, var(--color-space-blue) 0%, var(--color-deep-blue) 74%);
  color: var(--color-white);
  padding: 60px 0 44px;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-neon-green) 0%, var(--color-turquoise) 55%, transparent 82%);
  z-index: 2;
}
.page-faq .faq-hero-deco {
  position: absolute;
  right: -110px;
  bottom: -110px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(10, 240, 208, 0.24);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-faq .faq-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}
.page-faq .breadcrumbs {
  margin-bottom: 18px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-mid-gray);
}
.page-faq .breadcrumbs a {
  color: var(--color-light-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-faq .breadcrumbs a:hover {
  color: var(--color-neon-green);
}
.page-faq .breadcrumbs-sep {
  margin: 0 6px;
  color: var(--color-mid-gray);
}
.page-faq .breadcrumbs-current {
  color: var(--color-turquoise);
}
.page-faq .faq-hero-kicker {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-neon-green);
  margin: 0 0 10px;
}
.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-white);
  font-weight: 700;
}
.page-faq .faq-h1-sep {
  color: var(--color-neon-green);
}
.page-faq .faq-hero-desc {
  margin: 0 0 20px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-light-gray);
  max-width: 560px;
}
.page-faq .faq-search {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  margin-bottom: 24px;
  max-width: 520px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.page-faq .faq-search:focus-within {
  border-color: var(--color-neon-green);
  background: rgba(255, 255, 255, 0.12);
}
.page-faq .faq-search input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: 0;
  padding: 14px 16px;
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 15px;
}
.page-faq .faq-search input::placeholder {
  color: var(--color-mid-gray);
}
.page-faq .faq-search-hint {
  flex: 0 0 auto;
  padding-right: 16px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--color-neon-green);
}
.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 34px;
  padding-top: 4px;
}
.page-faq .faq-stat {
  display: grid;
  gap: 2px;
}
.page-faq .faq-stat .data-value {
  font-family: var(--font-data);
  font-size: 24px;
  line-height: 1.2;
  color: var(--color-neon-green);
}
.page-faq .faq-stat .data-label {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-mid-gray);
}
.page-faq .faq-hero-media {
  display: block;
  margin-top: 6px;
}
.page-faq .faq-hero-media img {
  width: 100%;
  max-width: 300px;
  height: auto;
  margin: 0 auto;
  display: block;
  object-fit: cover;
}

/* ---- 双栏布局 ---- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-top: 40px;
  padding-bottom: 80px;
}
.page-faq .faq-index {
  position: relative;
  background: var(--color-white);
  border-top: 3px solid var(--color-neon-green);
  padding: 20px 18px;
  box-shadow: 0 4px 18px rgba(11, 29, 58, 0.08);
}
.page-faq .faq-index-head {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 14px;
}
.page-faq .faq-index-label {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-mid-gray);
}
.page-faq .faq-index-title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-space-blue);
}
.page-faq .faq-index-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  border-top: 1px solid var(--color-light-gray);
}
.page-faq .faq-index-list li {
  border-bottom: 1px solid var(--color-light-gray);
}
.page-faq .faq-index-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 2px;
  color: var(--color-dark-gray);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.page-faq .faq-index-list a:hover {
  color: var(--color-neon-green);
  padding-left: 6px;
}
.page-faq .faq-index-num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-mid-gray);
}
.page-faq .faq-index-more {
  border-top: 1px dashed var(--color-mid-gray);
  padding-top: 14px;
}
.page-faq .faq-index-more p {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-dark-gray);
}
.page-faq .faq-index-more .btn {
  width: 100%;
}

/* ---- 右侧主内容 ---- */
.page-faq .faq-main {
  min-width: 0;
}
.page-faq .faq-section {
  margin-bottom: 56px;
}
.page-faq .faq-section-top {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}
.page-faq .faq-section .section-index {
  font-family: var(--font-data);
  font-size: 28px;
  line-height: 1;
  font-weight: 700;
  color: var(--color-neon-green);
}
.page-faq .faq-section .section-heading {
  margin: 0 0 4px;
  font-family: var(--font-heading);
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.12;
  text-transform: uppercase;
  color: var(--color-space-blue);
}
.page-faq .faq-section-desc {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-mid-gray);
}

/* ---- 分类网格 ---- */
.page-faq .faq-cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-faq .faq-cat-card {
  position: relative;
  background: var(--color-white);
  padding: 18px 18px 16px;
  border: 1px solid rgba(20, 50, 92, 0.1);
  border-top: 3px solid transparent;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.page-faq .faq-cat-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 0;
  height: 0;
  border-left: 22px solid transparent;
  border-bottom: 22px solid var(--color-turquoise);
  opacity: 0.4;
  pointer-events: none;
}
.page-faq .faq-cat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.12);
  border-top-color: var(--color-neon-green);
}
.page-faq .faq-cat-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.page-faq .faq-cat-num {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-neon-green);
  background: var(--color-space-blue);
  padding: 3px 7px;
  line-height: 1;
}
.page-faq .faq-cat-card h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-space-blue);
}
.page-faq .faq-cat-card p {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-dark-gray);
}
.page-faq .faq-cat-card a {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-deep-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--color-neon-green);
  transition: color var(--transition-fast);
}
.page-faq .faq-cat-card a:hover {
  color: var(--color-neon-green);
}

/* ---- 折叠面板 ---- */
.page-faq .faq-accordion {
  border-top: 1px solid rgba(20, 50, 92, 0.12);
}
.page-faq .faq-item {
  background: var(--color-white);
  border-bottom: 1px solid rgba(20, 50, 92, 0.1);
  border-left: 3px solid transparent;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.page-faq .faq-item[open] {
  border-left-color: var(--color-neon-green);
  box-shadow: 0 4px 16px rgba(11, 29, 58, 0.08);
}
.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 16px 18px 20px;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item-q {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--color-space-blue);
}
.page-faq .faq-item-mark {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-data);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  background: var(--color-space-blue);
  color: var(--color-neon-green);
  transition: background var(--transition-fast), color var(--transition-fast), transform 300ms ease;
}
.page-faq .faq-item[open] .faq-item-mark {
  background: var(--color-neon-green);
  color: var(--color-space-blue);
  transform: rotate(45deg);
}
.page-faq .faq-item-a {
  padding: 14px 20px 20px;
  border-top: 1px dashed var(--color-mid-gray);
  margin: -6px 20px 0;
  padding-left: 0;
  padding-right: 0;
}
.page-faq .faq-item-a p {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-dark-gray);
}
.page-faq .faq-item-a a {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-deep-blue);
  border-bottom: 1px solid var(--color-neon-green);
}
.page-faq .faq-item[open] .faq-item-a {
  animation: faqFadeIn 280ms ease;
}
@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- 联系人工帮助 ---- */
.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 14px;
}
.page-faq .faq-contact-card {
  background: var(--color-white);
  border: 1px solid rgba(20, 50, 92, 0.1);
  padding: 18px 18px 16px;
  display: grid;
  gap: 4px;
}
.page-faq .faq-contact-main {
  background: var(--color-space-blue);
  border-left: 4px solid var(--color-neon-green);
  color: var(--color-white);
}
.page-faq .faq-contact-label {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-mid-gray);
}
.page-faq .faq-contact-main .faq-contact-label {
  color: var(--color-neon-green);
}
.page-faq .faq-contact-value {
  font-family: var(--font-data);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-space-blue);
  text-decoration: none;
  word-break: break-all;
  line-height: 1.4;
}
.page-faq .faq-contact-main .faq-contact-value {
  color: var(--color-white);
  font-size: 19px;
}
.page-faq .faq-contact-value:hover {
  color: var(--color-neon-green);
}
.page-faq .faq-contact-main .faq-contact-value:hover {
  color: var(--color-turquoise);
}
.page-faq .faq-contact-card p {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-mid-gray);
}
.page-faq .faq-contact-main p {
  color: var(--color-light-gray);
}
.page-faq .faq-contact-footer {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: center;
  background: var(--color-deep-blue);
  padding: 24px 20px;
  margin-top: 20px;
}
.page-faq .faq-contact-note p {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-light-gray);
}
.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-faq .faq-contact-note .btn-primary {
  background: var(--color-neon-green);
  border-color: var(--color-neon-green);
  color: var(--color-space-blue);
}
.page-faq .faq-contact-note .btn-outline {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--color-white);
}
.page-faq .faq-contact-note .btn-outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}
.page-faq .faq-contact-media {
  min-width: 0;
}
.page-faq .faq-contact-media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---- 中屏适配 ---- */
@media (min-width: 680px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .faq-contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---- 桌面双栏适配 ---- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 72px 0 56px;
  }
  .page-faq .faq-hero-inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
  }
  .page-faq .faq-hero-media {
    margin-top: 0;
  }
  .page-faq .faq-hero-media img {
    max-width: none;
    width: 100%;
  }
  .page-faq .faq-contact-footer {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 28px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 90px;
    border-top: 0;
    border-left: 3px solid var(--color-neon-green);
  }
  .page-faq .faq-contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- 减弱动效 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-faq {
    scroll-behavior: auto;
  }
  .page-faq .faq-cat-card,
  .page-faq .faq-item,
  .page-faq .faq-item-mark,
  .page-faq .faq-item[open] .faq-item-a {
    animation: none !important;
    transition: none !important;
  }
}