/* ===== 帮助中心页面专属样式 ===== */
.page-faq {
  --faq-grid-color: rgba(43, 58, 103, 0.35);
  background-color: var(--navy);
  color: var(--white);
  position: relative;
  overflow-x: hidden;
}

.page-faq::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(to right, var(--faq-grid-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-grid-color) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}

.page-faq > * {
  position: relative;
  z-index: 1;
}

.page-faq ::selection {
  background: var(--orange);
  color: var(--dark);
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 44px 0 40px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(115deg, var(--navy) 0%, var(--navy-deep) 58%, rgba(18, 58, 107, 0.55) 100%);
  position: relative;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(164, 179, 209, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(164, 179, 209, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 180px;
  height: 8px;
  background: var(--orange);
  z-index: 2;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb {
  margin-bottom: 32px;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: end;
}

.page-faq .faq-hero-copy .kicker {
  color: var(--green);
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--font-heading);
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.12;
  margin: 12px 0 16px;
  max-width: 13em;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero-copy .lead {
  color: var(--blue-gray);
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.7;
  margin: 0;
}

/* 首屏数据快照 */
.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 2px solid var(--orange);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  background: rgba(5, 13, 31, 0.45);
}

.page-faq .faq-stat {
  padding: 18px 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-stat + .faq-stat {
  border-left: 1px solid var(--line);
}

.page-faq .faq-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 26px;
  font-weight: 500;
  color: var(--white);
  line-height: 1.2;
}

.page-faq .faq-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--blue-gray);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-faq .faq-stat-green .faq-stat-num {
  color: var(--green);
}

.page-faq .faq-stat-orange .faq-stat-num {
  color: var(--orange);
}

.page-faq .faq-stat-live {
  display: inline-flex;
  align-items: center;
}

.page-faq .faq-pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 8px;
  animation: faq-page-pulse 1.6s infinite;
}

@keyframes faq-page-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(0, 230, 118, 0); }
}

.page-faq .faq-hero-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero-actions .btn-ghost {
  border: 1px solid var(--line);
  color: var(--white);
  padding: 8px 14px;
  text-decoration: none;
  font-size: 14px;
  transition: border-color var(--transition), color var(--transition);
}

.page-faq .faq-hero-actions .btn-ghost:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* 目录 + 内容主体 */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-top: 40px;
  padding-bottom: 64px;
}

.page-faq .faq-toc {
  align-self: start;
  background: rgba(5, 13, 31, 0.5);
  border: 1px solid var(--line);
  padding: 20px;
}

.page-faq .faq-toc-kicker {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--orange);
  letter-spacing: 0.14em;
  margin: 0 0 8px;
}

.page-faq .faq-toc-title {
  font-family: var(--font-heading);
  font-size: 18px;
  margin: 0 0 16px;
}

.page-faq .faq-toc-list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  color: var(--blue-gray);
  text-decoration: none;
  font-size: 15px;
  transition: color var(--transition), padding-left var(--transition);
}

.page-faq .faq-toc-link:hover {
  color: var(--white);
  padding-left: 10px;
}

.page-faq .faq-toc-num {
  font-family: var(--font-data);
  color: var(--orange);
  font-size: 13px;
  width: 24px;
}

.page-faq .faq-toc-card {
  background: rgba(255, 107, 53, 0.08);
  border-left: 3px solid var(--orange);
  padding: 14px 16px;
}

.page-faq .faq-toc-card p {
  margin: 0 0 6px;
  color: var(--blue-gray);
  font-size: 13px;
}

.page-faq .faq-toc-card a {
  color: var(--orange);
  font-weight: 600;
  text-decoration: none;
}

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

/* FAQ 区块 */
.page-faq .faq-block {
  scroll-margin-top: calc(var(--header-height) + 24px);
  margin-bottom: 56px;
}

.page-faq .faq-block-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block-kicker {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--green);
  letter-spacing: 0.14em;
  margin: 0;
}

.page-faq .faq-block-head h2 {
  font-family: var(--font-heading);
  font-size: 28px;
  margin: 0;
  color: var(--white);
}

.page-faq .faq-block-desc {
  margin: 0;
  color: var(--blue-gray);
  font-size: 15px;
  max-width: 65ch;
}

/* 手风琴 */
.page-faq .accordion {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item:has(.accordion-trigger[aria-expanded="true"]) {
  border-left: 3px solid var(--orange);
}

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

.page-faq .accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 16px;
  background: transparent;
  border: 0;
  color: var(--white);
  text-align: left;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.page-faq .accordion-trigger:hover {
  background: rgba(255, 255, 255, 0.03);
}

.page-faq .accordion-trigger[aria-expanded="true"] {
  color: var(--orange);
}

.page-faq .faq-q-num {
  font-family: var(--font-data);
  color: var(--green);
  font-size: 12px;
  flex-shrink: 0;
}

.page-faq .faq-q-text {
  flex: 1;
}

.page-faq .accordion-icon {
  position: relative;
  width: 18px;
  height: 18px;
  margin-left: auto;
  flex-shrink: 0;
}

.page-faq .accordion-icon::before,
.page-faq .accordion-icon::after {
  content: "";
  position: absolute;
  background: var(--orange);
  transition: transform var(--transition);
}

.page-faq .accordion-icon::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .accordion-icon::after {
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .accordion-trigger[aria-expanded="true"] .accordion-icon::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .accordion-panel {
  padding: 0 16px 18px;
  color: var(--blue-gray);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .accordion-panel[hidden] {
  display: none;
}

.page-faq .accordion-panel p {
  margin: 0 0 10px;
}

.page-faq .accordion-panel p:last-child {
  margin-bottom: 0;
}

/* 步骤列表 */
.page-faq .faq-steps {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-page-step;
}

.page-faq .faq-steps li {
  counter-increment: faq-page-step;
  position: relative;
  padding-left: 36px;
  margin-bottom: 10px;
}

.page-faq .faq-steps li::before {
  content: counter(faq-page-step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  height: 24px;
  background: var(--orange);
  color: var(--dark);
  font-family: var(--font-data);
  font-size: 12px;
  display: grid;
  place-items: center;
}

/* 切换步骤进度条 */
.page-faq .faq-route {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin: 20px 0 0;
  padding: 14px 16px;
  background: rgba(0, 230, 118, 0.06);
  border-left: 3px solid var(--green);
}

.page-faq .faq-route-step {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--white);
}

.page-faq .faq-route-step b {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  background: var(--green);
  color: var(--dark);
  font-family: var(--font-data);
  font-size: 12px;
}

.page-faq .faq-route-arrow {
  color: var(--green);
  font-family: var(--font-data);
}

/* 图片示意图 */
.page-faq .faq-figure {
  margin: 28px 0 0;
  border: 1px solid var(--line);
  background: rgba(5, 13, 31, 0.4);
  padding: 12px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--blue-gray);
  padding-top: 10px;
  border-top: 1px solid var(--line);
  margin-top: 10px;
}

/* 底部引导 */
.page-faq .faq-outro {
  border-top: 1px solid var(--line);
  background: var(--dark);
  padding: 56px 0 64px;
}

.page-faq .faq-outro-inner {
  text-align: center;
}

.page-faq .faq-outro .kicker {
  color: var(--green);
}

.page-faq .faq-outro h2 {
  font-family: var(--font-heading);
  font-size: 30px;
  margin: 12px 0;
}

.page-faq .faq-outro p {
  color: var(--blue-gray);
  max-width: 55ch;
  margin: 0 auto 24px;
}

.page-faq .faq-outro .btn-primary {
  background: var(--orange);
  color: var(--dark);
  padding: 10px 20px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
}

/* 桌面端布局 */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 64px 0 48px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 48px;
  }

  .page-faq .faq-stat-num {
    font-size: 32px;
  }

  .page-faq .faq-figure {
    max-width: 560px;
  }

  .page-faq .faq-outro h2 {
    font-size: 36px;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-shell {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-height) + 16px);
  }

  .page-faq .faq-block-head h2 {
    font-size: 34px;
  }

  .page-faq .accordion-trigger {
    padding: 20px 20px;
  }

  .page-faq .accordion-panel {
    padding: 0 20px 20px;
  }

  .page-faq .faq-figure {
    max-width: 600px;
    margin-left: 0;
  }
}