.page-faq {
  --faq-panel-radius: 26px 6px 26px 6px;
  --faq-item-radius: 18px 4px 18px 4px;
  --faq-hero-radius: 0 0 38px 10px;
  --faq-grid-line: rgba(0, 229, 255, 0.1);
  --faq-glow: rgba(57, 255, 20, 0.14);
  --faq-yellow-soft: rgba(255, 215, 0, 0.14);
  background: var(--c-light);
}

.page-faq .container {
  padding-top: clamp(20px, 4vw, 48px);
  padding-bottom: clamp(48px, 8vw, 88px);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-faq .breadcrumb a {
  color: var(--c-cyan);
  text-decoration: none;
  transition: color 0.2s;
}

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

.page-faq .breadcrumb__sep {
  color: rgba(255, 255, 255, 0.4);
}

/* 页头 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  color: var(--c-white);
  border-radius: var(--faq-hero-radius);
  background:
    radial-gradient(circle at 82% 18%, var(--faq-glow), transparent 40%),
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(145deg, var(--c-primary), var(--c-primary-alt));
  background-size: auto, 36px 36px, 36px 36px, cover;
  padding: clamp(20px, 4vw, 44px);
  box-shadow: var(--shadow-1);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -64px;
  top: -48px;
  width: 180px;
  height: 180px;
  background: linear-gradient(135deg, transparent 0 42%, var(--faq-yellow-soft) 43% 100%);
  border-radius: 32px;
  transform: rotate(28deg);
  pointer-events: none;
}

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

.page-faq .faq-hero .eyebrow {
  color: var(--c-cyan);
  margin-bottom: 8px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 6vw, 52px);
  line-height: 1.12;
  letter-spacing: 0.02em;
  margin: 0 0 16px;
  max-width: 12em;
}

.page-faq .faq-hero__lead {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 54em;
  margin: 0;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero .btn-cta {
  background: var(--c-yellow);
  color: var(--c-primary);
  border: 1px solid transparent;
}

.page-faq .faq-hero .btn-cta:hover {
  background: var(--c-green);
  color: var(--c-primary);
}

.page-faq .faq-hero .btn-ghost {
  color: var(--c-white);
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.08);
}

.page-faq .faq-hero .btn-ghost:hover {
  border-color: var(--c-cyan);
  background: rgba(0, 229, 255, 0.16);
}

/* 统计卡 */
.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 28px;
}

.page-faq .stat-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.24);
  border-radius: 18px 4px 18px 4px;
  padding: 16px 12px;
  text-align: center;
  backdrop-filter: blur(4px);
  transition: background 0.2s, transform 0.2s;
}

.page-faq .stat-card:hover {
  background: rgba(0, 229, 255, 0.14);
  transform: translateY(-2px);
}

.page-faq .stat-card__num {
  display: block;
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1;
  color: var(--c-yellow);
}

.page-faq .stat-card__label {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 8px;
  line-height: 1.4;
}

/* 通用区块 */
.page-faq .section {
  margin-top: clamp(40px, 6vw, 72px);
}

.page-faq .section-head {
  margin-bottom: 24px;
}

.page-faq .eyebrow {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin: 0 0 10px;
}

.page-faq .section-head h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 40px);
  color: var(--c-primary);
  margin: 0 0 12px;
  line-height: 1.15;
}

.page-faq .section-head p:not(.eyebrow) {
  color: var(--c-muted);
  max-width: 640px;
  line-height: 1.7;
  margin: 0;
}

/* FAQ 布局 */
.page-faq .faq-layout {
  display: grid;
  gap: 20px;
}

.page-faq .faq-layout__media {
  order: 2;
}

.page-faq .faq-layout__img {
  width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: cover;
  border-radius: var(--faq-panel-radius);
  box-shadow: var(--shadow-1);
  border: 1px solid rgba(11, 30, 58, 0.06);
}

.page-faq .faq-tabs {
  order: 1;
  min-width: 0;
}

/* 折叠标签页 */
.page-faq .faq-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
}

.page-faq .faq-tabs__bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 8px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(11, 30, 58, 0.06);
  border-radius: 999px;
  box-shadow: var(--shadow-2);
  position: sticky;
  top: 10px;
  z-index: 6;
  backdrop-filter: blur(10px);
}

.page-faq .faq-tabs__bar::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-tabs__label {
  flex: 0 0 auto;
  padding: 10px 16px;
  border-radius: 999px;
  background: transparent;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-muted);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.page-faq #faq-cat-download:checked ~ .faq-tabs__bar label[for="faq-cat-download"],
.page-faq #faq-cat-update:checked ~ .faq-tabs__bar label[for="faq-cat-update"],
.page-faq #faq-cat-feature:checked ~ .faq-tabs__bar label[for="faq-cat-feature"],
.page-faq #faq-cat-security:checked ~ .faq-tabs__bar label[for="faq-cat-security"],
.page-faq #faq-cat-support:checked ~ .faq-tabs__bar label[for="faq-cat-support"] {
  color: var(--c-primary);
  background: var(--c-yellow);
  box-shadow: 0 4px 14px rgba(255, 215, 0, 0.32);
}

.page-faq #faq-cat-download:focus-visible ~ .faq-tabs__bar label[for="faq-cat-download"],
.page-faq #faq-cat-update:focus-visible ~ .faq-tabs__bar label[for="faq-cat-update"],
.page-faq #faq-cat-feature:focus-visible ~ .faq-tabs__bar label[for="faq-cat-feature"],
.page-faq #faq-cat-security:focus-visible ~ .faq-tabs__bar label[for="faq-cat-security"],
.page-faq #faq-cat-support:focus-visible ~ .faq-tabs__bar label[for="faq-cat-support"] {
  outline: 3px solid var(--c-green);
  outline-offset: 2px;
}

.page-faq .faq-tabs__panel {
  display: none;
  margin-top: 18px;
  padding: 18px 14px;
  background: var(--c-white);
  border-radius: var(--faq-panel-radius);
  box-shadow: var(--shadow-1);
  border: 1px solid rgba(11, 30, 58, 0.06);
  counter-reset: faq;
}

.page-faq #faq-cat-download:checked ~ .faq-tabs__panel--download,
.page-faq #faq-cat-update:checked ~ .faq-tabs__panel--update,
.page-faq #faq-cat-feature:checked ~ .faq-tabs__panel--feature,
.page-faq #faq-cat-security:checked ~ .faq-tabs__panel--security,
.page-faq #faq-cat-support:checked ~ .faq-tabs__panel--support {
  display: block;
}

/* 手风琴问题项 */
.page-faq .faq-item {
  counter-increment: faq;
  margin-bottom: 10px;
  border: 1px solid rgba(11, 30, 58, 0.08);
  border-radius: var(--faq-item-radius);
  background: var(--c-white);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.page-faq .faq-item[open] {
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: 0 8px 24px rgba(11, 30, 58, 0.08);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  list-style: none;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-text);
}

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

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

.page-faq .faq-item__q::before {
  content: counter(faq, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-yellow);
  background: var(--c-primary);
  border-radius: 999px;
  padding: 4px 9px;
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 400;
  color: var(--c-primary);
  background: var(--c-light);
  transition: transform 0.2s, background 0.2s, color 0.2s;
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(45deg);
  background: var(--c-cyan);
  color: var(--c-primary);
}

.page-faq .faq-item__a {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

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

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-fade-in 0.25s ease;
}

@keyframes faq-fade-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 联系客服 */
.page-faq .contact-faq {
  margin-top: clamp(48px, 7vw, 88px);
}

.page-faq .contact-faq__grid {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 24px;
  padding: clamp(24px, 4vw, 44px);
  border-radius: 32px 8px 32px 8px;
  background: linear-gradient(135deg, var(--c-primary-alt), var(--c-primary));
  color: var(--c-white);
  box-shadow: var(--shadow-1);
}

.page-faq .contact-faq__grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0, 229, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.08) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
  pointer-events: none;
}

.page-faq .contact-faq__content {
  position: relative;
  z-index: 1;
}

.page-faq .contact-faq .eyebrow {
  color: var(--c-cyan);
}

.page-faq .contact-faq h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  color: var(--c-white);
  margin: 0 0 12px;
}

.page-faq .contact-faq__lead {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.7;
  margin: 0 0 22px;
}

.page-faq .contact-faq__channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 24px;
}

.page-faq .contact-channel {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--c-white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: 16px 4px 16px 4px;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.page-faq a.contact-channel:hover {
  background: rgba(0, 229, 255, 0.14);
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

.page-faq .contact-channel__tag {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-yellow);
  background: rgba(255, 215, 0, 0.16);
  padding: 3px 8px;
  border-radius: 999px;
}

.page-faq .contact-channel__text {
  font-family: var(--font-num);
  font-size: 14px;
  line-height: 1.5;
  word-break: break-all;
}

.page-faq .contact-faq .btn-cta {
  background: var(--c-yellow);
  color: var(--c-primary);
  border: 1px solid transparent;
}

.page-faq .contact-faq .btn-cta:hover {
  background: var(--c-green);
  color: var(--c-primary);
}

.page-faq .contact-faq__media {
  position: relative;
  z-index: 1;
}

.page-faq .contact-faq__img {
  width: 100%;
  height: auto;
  border-radius: 24px 6px 24px 6px;
  box-shadow: var(--shadow-2);
  border: 1px solid rgba(0, 229, 255, 0.25);
}

/* 桌面端媒体查询 */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(24px, 5vw, 56px);
    align-items: center;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 0;
  }

  .page-faq .stat-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    text-align: left;
  }

  .page-faq .stat-card__label {
    margin-top: 0;
    text-align: right;
  }

  .page-faq .faq-tabs__panel {
    padding: 24px;
  }

  .page-faq .contact-faq__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.35fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-layout__media {
    order: 1;
    position: sticky;
    top: 100px;
  }

  .page-faq .faq-layout__img {
    max-height: 440px;
    aspect-ratio: 3 / 2;
  }

  .page-faq .faq-tabs {
    order: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition: none !important;
    animation: none !important;
  }
}