.page-faq {
  --faq-panel: #1A1F2B;
  --faq-line: #2A3444;
  --faq-neon: #39FF14;
  --faq-cyan: #00E5FF;
  --faq-white: #FFFFFF;
  --faq-gray: #A8B2C3;
  --faq-warn: #FFB800;
  --faq-bg: #0B0F14;
  --faq-gutter: 24px;
  --faq-section: 96px;
  --faq-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --faq-radius: 2px;

  background: var(--faq-bg);
  color: var(--faq-gray);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  padding: 32px var(--faq-gutter) 0;
}

/* 面包屑 */
.page-faq .breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--faq-gray);
  max-width: var(--width-page);
  margin: 0 auto 28px;
}

.page-faq .breadcrumbs a {
  color: var(--faq-cyan);
  text-decoration: none;
  transition: color var(--speed) var(--faq-ease);
}

.page-faq .breadcrumbs a:hover {
  color: var(--faq-white);
}

.page-faq .breadcrumbs-sep {
  color: var(--faq-line);
}

.page-faq .breadcrumbs-current {
  color: var(--faq-gray);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  max-width: var(--width-page);
  margin: 0 auto var(--faq-section);
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq .faq-hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.page-faq .grid-v {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(0, 229, 255, 0.08);
}

.page-faq .grid-v:nth-child(1) { left: 8%; }
.page-faq .grid-v:nth-child(2) { left: 34%; }
.page-faq .grid-v:nth-child(3) { left: 61%; }
.page-faq .grid-v:nth-child(4) { left: 91%; }

.page-faq .grid-h {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(0, 229, 255, 0.06);
}

.page-faq .grid-h:nth-of-type(5) { top: 22%; }
.page-faq .grid-h:nth-of-type(6) { top: 71%; }

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

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faq-cyan);
  margin: 0 0 16px;
  padding: 6px 14px;
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-left: 3px solid var(--faq-cyan);
  background: rgba(0, 229, 255, 0.05);
}

.page-faq .kicker-dot {
  width: 6px;
  height: 6px;
  background: var(--faq-neon);
  display: inline-block;
  animation: faq-pulse 2.2s infinite alternate;
}

@keyframes faq-pulse {
  from { opacity: 0.4; }
  to { opacity: 1; }
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 10vw, 96px);
  line-height: 0.95;
  color: var(--faq-white);
  margin: 0 0 20px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  text-shadow: 0 0 40px rgba(0, 229, 255, 0.12);
}

.page-faq .faq-hero-desc {
  font-size: 18px;
  line-height: 1.7;
  max-width: 620px;
  color: var(--faq-gray);
  margin: 0 0 28px;
}

/* 搜索框 */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  max-width: 640px;
  min-height: 54px;
  padding: 0 16px;
  transition: border-color var(--speed) var(--faq-ease), box-shadow var(--speed) var(--faq-ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--faq-neon);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.12);
}

.page-faq .faq-search-icon {
  flex: 0 0 auto;
  margin-right: 12px;
  display: flex;
  align-items: center;
}

.page-faq .faq-search-input {
  flex: 1 1 auto;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--faq-white);
  min-width: 0;
  padding: 12px 0;
}

.page-faq .faq-search-input::placeholder {
  color: rgba(168, 178, 195, 0.6);
}

.page-faq .faq-search-clear {
  flex: 0 0 auto;
  background: transparent;
  border: none;
  color: var(--faq-gray);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  transition: color var(--speed) var(--faq-ease);
}

.page-faq .faq-search-clear:hover {
  color: var(--faq-white);
}

.page-faq .faq-search-clear[hidden] {
  display: none;
}

/* 热门搜索 */
.page-faq .faq-hot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .faq-hot-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--faq-gray);
  letter-spacing: 0.08em;
}

.page-faq .faq-hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hot-tag {
  background: transparent;
  border: 1px solid var(--faq-line);
  color: var(--faq-gray);
  cursor: pointer;
  transition: all var(--speed) var(--faq-ease);
}

.page-faq .faq-hot-tag:hover {
  border-color: var(--faq-neon);
  color: var(--faq-neon);
}

.page-faq .faq-hot-tag.is-active {
  background: var(--faq-neon);
  border-color: var(--faq-neon);
  color: #0B0F14;
}

/* 首屏图片 */
.page-faq .faq-hero-media {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
}

.page-faq .faq-hero-img {
  width: 100%;
  height: auto;
  max-width: 800px;
  border: 1px solid var(--faq-line);
  object-fit: cover;
  display: block;
}

.page-faq .faq-hero-stat {
  position: absolute;
  bottom: 18px;
  left: 18px;
  background: rgba(11, 15, 20, 0.86);
  border: 1px solid rgba(57, 255, 20, 0.45);
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(4px);
}

.page-faq .hero-stat-num {
  font-family: var(--font-display);
  font-size: 26px;
  line-height: 1;
  color: var(--faq-neon);
}

.page-faq .hero-stat-label {
  font-size: 12px;
  margin-top: 4px;
  letter-spacing: 0.06em;
  color: var(--faq-gray);
}

.page-faq .faq-hero-stat-alt {
  border-color: rgba(0, 229, 255, 0.45);
  left: auto;
  right: 18px;
  bottom: 18px;
}

.page-faq .faq-hero-stat-alt .hero-stat-num {
  color: var(--faq-cyan);
}

/* 分类区块 */
.page-faq .faq-section {
  max-width: var(--width-page);
  margin: 0 auto var(--faq-section);
}

.page-faq .faq-section-head {
  margin-bottom: 36px;
}

.page-faq .faq-section-head .section-index {
  color: var(--faq-cyan);
}

/* 图片带状区域 */
.page-faq .faq-image-row {
  display: grid;
  justify-items: start;
  margin-bottom: 44px;
}

.page-faq .faq-image-card {
  max-width: 600px;
  border: 1px solid var(--faq-line);
  position: relative;
}

.page-faq .faq-image-card::after {
  content: "";
  position: absolute;
  inset: 12px -12px -12px 12px;
  border: 1px solid rgba(0, 229, 255, 0.35);
  z-index: -1;
}

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

/* 分类容器 */
.page-faq .faq-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-cat {
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  padding: 28px 20px;
  position: relative;
  transition: border-color var(--speed) var(--faq-ease);
}

.page-faq .faq-cat:hover {
  border-color: rgba(0, 229, 255, 0.4);
}

.page-faq .faq-cat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 48px;
  background: var(--faq-cyan);
}

.page-faq .faq-cat:nth-child(2)::before {
  background: var(--faq-neon);
}

.page-faq .faq-cat:nth-child(3)::before {
  background: var(--faq-cyan);
}

.page-faq .faq-cat:nth-child(4)::before {
  background: var(--faq-neon);
}

.page-faq .faq-cat:nth-child(5)::before {
  background: var(--faq-warn);
}

.page-faq .faq-cat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-cat-icon {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
  margin-right: 4px;
}

.page-faq .faq-cat-title {
  flex: 1 1 auto;
  font-size: 20px;
  line-height: 1.3;
  color: var(--faq-white);
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: 0.03em;
}

/* 折叠项 */
.page-faq .faq-item {
  border: none;
  border-bottom: 1px solid var(--faq-line);
  background: transparent;
}

.page-faq .faq-item:last-child {
  border-bottom: none;
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 12px 18px 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--faq-white);
  font-weight: 500;
  position: relative;
  transition: color var(--speed) var(--faq-ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  font-size: 22px;
  line-height: 1;
  color: var(--faq-neon);
  font-weight: 400;
  flex: 0 0 auto;
  transform: translateY(2px);
  transition: transform var(--speed) var(--faq-ease), color var(--speed) var(--faq-ease);
}

.page-faq .faq-item[open] summary {
  color: var(--faq-neon);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  transform: translateY(0);
  color: var(--faq-cyan);
}

.page-faq .faq-item summary:hover {
  color: var(--faq-cyan);
}

.page-faq .faq-answer {
  padding: 0 20px 22px 0;
  color: var(--faq-gray);
  font-size: 15px;
  line-height: 1.75;
  border-left: 2px solid rgba(57, 255, 20, 0.3);
  margin-left: 2px;
}

.page-faq .faq-answer p {
  margin: 0 0 12px;
}

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

/* 提示条 */
.page-faq .faq-tip {
  max-width: var(--width-page);
  margin: 0 auto var(--faq-section);
}

.page-faq .faq-tip-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  background: rgba(255, 184, 0, 0.07);
  border: 1px solid rgba(255, 184, 0, 0.35);
  border-left: 4px solid var(--faq-warn);
}

.page-faq .faq-tip-icon {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--faq-warn);
  border-radius: 50%;
}

.page-faq .faq-tip-text {
  margin: 0;
  font-size: 15px;
  color: var(--faq-gray);
}

.page-faq .faq-tip-text a {
  color: var(--faq-warn);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 联系支持 */
.page-faq .faq-contact {
  max-width: var(--width-page);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-bottom: 80px;
}

.page-faq .faq-contact-card {
  background: linear-gradient(135deg, #1A1F2B 0%, #0B0F14 100%);
  border: 1px solid var(--faq-line);
  padding: 36px 24px;
  position: relative;
}

.page-faq .faq-contact-index {
  color: var(--faq-cyan);
  font-size: 14px;
  display: block;
  margin-bottom: 12px;
}

.page-faq .faq-contact-title {
  font-family: var(--font-display);
  font-size: 36px;
  line-height: 1.1;
  color: var(--faq-white);
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-faq .faq-contact-desc {
  color: var(--faq-gray);
  font-size: 16px;
  margin: 0 0 28px;
  max-width: 520px;
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-contact-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-faq .contact-label {
  font-weight: 600;
  color: var(--faq-white);
  min-width: 88px;
  font-size: 14px;
  letter-spacing: 0.04em;
}

.page-faq .contact-value {
  color: var(--faq-gray);
  font-size: 15px;
}

.page-faq a.contact-value {
  color: var(--faq-cyan);
  text-decoration: none;
  transition: color var(--speed) var(--faq-ease);
}

.page-faq a.contact-value:hover {
  color: var(--faq-neon);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 侧边入口 */
.page-faq .faq-side-links {
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-side-label {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faq-cyan);
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-side-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 8px;
  color: var(--faq-white);
  font-size: 16px;
  text-decoration: none;
  border-bottom: 1px solid rgba(42, 52, 68, 0.6);
  transition: all var(--speed) var(--faq-ease);
}

.page-faq .faq-side-link:last-child {
  border-bottom: none;
}

.page-faq .faq-side-link:hover {
  color: var(--faq-neon);
  background: rgba(57, 255, 20, 0.04);
  padding-left: 14px;
}

.page-faq .faq-side-arrow {
  color: var(--faq-cyan);
  font-size: 20px;
  transition: transform var(--speed) var(--faq-ease);
}

.page-faq .faq-side-link:hover .faq-side-arrow {
  transform: translateX(4px);
}

/* 过滤高亮状态 */
.page-faq .faq-item.is-hidden {
  display: none;
}

.page-faq .faq-cat.is-hidden {
  display: none;
}

.page-faq .faq-item.is-visible-by-filter {
  border-left: 2px solid rgba(57, 255, 20, 0.7);
  background: rgba(57, 255, 20, 0.03);
}

/* 媒体查询：桌面 */
@media (min-width: 768px) {
  .page-faq {
    padding: 40px 40px 0;
  }

  .page-faq .faq-hero {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .page-faq .faq-cats {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .page-faq .faq-cat {
    padding: 32px 28px;
  }

  .page-faq .faq-image-row {
    justify-items: start;
  }

  .page-faq .faq-contact {
    grid-template-columns: 1.3fr 0.7fr;
    align-items: start;
    gap: 24px;
  }

  .page-faq .faq-hero-media {
    justify-items: end;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, 1fr);
  }
}