.page-faq {
  --faq-line: #E6E8EC;
  --faq-muted: #6B7480;
  --faq-green-soft: rgba(0, 184, 126, 0.12);
  background: #FFFFFF;
}

/* ===== Hero ===== */
.page-faq .faq-hero {
  background: linear-gradient(180deg, var(--kai-off-white) 0%, #FFFFFF 100%);
  padding-top: calc(var(--kai-header-h) + 32px);
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 32px 0 48px;
}

.page-faq .faq-hero__content .kai-kicker {
  margin-top: 28px;
}

.page-faq .faq-hero__content h1 {
  margin: 16px 0 16px;
  font-size: 30px;
  line-height: 1.25;
  font-weight: 900;
  color: var(--kai-deep-blue);
  letter-spacing: -0.02em;
  max-width: 640px;
}

.page-faq .faq-hero__lead {
  max-width: 600px;
  margin: 0 0 24px;
  color: var(--kai-dark-gray);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-search {
  position: relative;
  max-width: 520px;
}

.page-faq .faq-search__icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--kai-orange);
  z-index: 1;
  pointer-events: none;
}

.page-faq .faq-search__input {
  width: 100%;
  height: 52px;
  padding: 0 20px 0 50px;
  border: 2px solid var(--faq-line);
  border-radius: var(--kai-radius-pill);
  background: var(--kai-white);
  font-family: var(--kai-font-body);
  font-size: 15px;
  color: var(--kai-dark-gray);
  outline: none;
  transition: border-color 0.28s, box-shadow 0.28s;
  -webkit-appearance: none;
  appearance: none;
}

.page-faq .faq-search__input:focus {
  border-color: var(--kai-orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.12);
}

.page-faq .faq-search__input::placeholder {
  color: #8A8F99;
}

.page-faq .faq-hero__visual {
  display: none;
  position: relative;
  min-height: 280px;
}

.page-faq .faq-hero__card {
  position: absolute;
  right: 6%;
  top: 50%;
  transform: translateY(-50%);
  width: 200px;
  height: 200px;
  border-radius: 48px;
  background: linear-gradient(145deg, #FFFFFF, #FFF0E8);
  border: 1px solid rgba(255, 107, 53, 0.18);
  box-shadow: 0 24px 60px rgba(27, 42, 74, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-faq .faq-hero__mark {
  font-family: var(--kai-font-mono);
  font-size: 88px;
  line-height: 1;
  font-weight: 800;
  background: linear-gradient(135deg, var(--kai-orange), var(--kai-orange-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-faq .faq-hero__label {
  position: absolute;
  left: 8%;
  bottom: 10%;
  writing-mode: vertical-rl;
  font-family: var(--kai-font-mono);
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--kai-deep-blue);
  opacity: 0.5;
}

.page-faq .faq-hero__banner {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--kai-deep-blue);
}

.page-faq .faq-hero__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(27, 42, 74, 0.06) 0%, rgba(255, 255, 255, 0) 40%, rgba(255, 107, 53, 0.1) 100%);
  z-index: 1;
}

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

/* ===== FAQ 主体 ===== */
.page-faq .faq-body {
  padding: 56px 0 72px;
  background: #FFFFFF;
}

.page-faq .faq-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

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

.page-faq .faq-index__content {
  background: var(--kai-off-white);
  border-radius: var(--kai-radius-lg);
  padding: 20px;
}

.page-faq .faq-index__title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 900;
  color: var(--kai-deep-blue);
}

.page-faq .faq-index__desc {
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--faq-muted);
}

.page-faq .faq-index__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--kai-radius-pill);
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  font-size: 14px;
  font-weight: 600;
  color: var(--kai-deep-blue);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: border-color 0.28s, color 0.28s, box-shadow 0.28s;
}

.page-faq .faq-index__link:hover {
  border-color: var(--kai-orange);
  color: var(--kai-orange);
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.12);
}

.page-faq .faq-index__num {
  font-family: var(--kai-font-mono);
  font-size: 12px;
  color: var(--kai-orange);
}

.page-faq .faq-panels {
  display: grid;
  gap: 48px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--kai-header-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  padding-top: 40px;
  border-top: 1px dashed #DEE1E6;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.page-faq .faq-group__meta {
  margin-left: auto;
  font-size: 14px;
}

.page-faq .faq-group__title {
  position: relative;
  margin: 0;
  padding-left: 14px;
  font-size: 22px;
  font-weight: 900;
  color: var(--kai-deep-blue);
}

.page-faq .faq-group__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 22px;
  border-radius: 5px;
  background: var(--kai-orange);
}

.page-faq #faq-replay .faq-group__title::before {
  background: var(--kai-green);
}

.page-faq #faq-favorite .faq-group__title::before {
  background: var(--kai-sky-blue);
}

.page-faq #faq-security .faq-group__title::before {
  background: var(--kai-deep-blue);
}

/* ===== 手风琴 ===== */
.page-faq .faq-item {
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  border-radius: var(--kai-radius-md);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item[open] {
  border-color: var(--kai-green);
  box-shadow: 0 10px 30px var(--faq-green-soft);
}

.page-faq .faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 18px 18px 20px;
  cursor: pointer;
  user-select: none;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--kai-deep-blue);
  transition: color 0.25s;
}

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

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

.page-faq .faq-item__q {
  flex: 1;
}

.page-faq .faq-item__icon {
  flex-shrink: 0;
  color: #8A8F99;
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1), color 0.32s;
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
  color: var(--kai-green);
}

.page-faq .faq-item__body {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--kai-dark-gray);
  border-top: 1px solid transparent;
}

.page-faq .faq-item[open] .faq-item__body {
  border-top-color: rgba(0, 184, 126, 0.16);
  padding-top: 16px;
}

/* ===== 回看图 ===== */
.page-faq .faq-media {
  margin: 20px 0 0;
  overflow: hidden;
  background: var(--kai-off-white);
  border: 1px solid var(--faq-line);
  border-radius: var(--kai-radius-lg);
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-media figcaption {
  padding: 12px 18px;
  font-size: 13px;
  text-align: center;
  color: var(--faq-muted);
}

/* ===== 底部 CTA ===== */
.page-faq .faq-help {
  padding: 0 0 80px;
  background: #FFFFFF;
}

.page-faq .faq-help__card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
  padding: 36px 28px;
  border-radius: 32px;
  background: linear-gradient(135deg, var(--kai-deep-blue) 0%, var(--kai-dark-blue) 100%);
}

.page-faq .faq-help__card::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 38px solid rgba(255, 107, 53, 0.18);
}

.page-faq .faq-help__card::after {
  content: "";
  position: absolute;
  left: 40%;
  bottom: -140px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(0, 184, 126, 0.14);
}

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

.page-faq .faq-help__content h2 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 900;
  color: #FFFFFF;
}

.page-faq .faq-help__content p {
  max-width: 620px;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

.page-faq .faq-help__card .kai-btn {
  position: relative;
  z-index: 1;
}

/* ===== 平板以上 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--kai-header-h) + 40px);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    padding: 48px 0 64px;
  }

  .page-faq .faq-hero__visual {
    display: block;
  }

  .page-faq .faq-hero__banner {
    height: 400px;
    border-radius: 40px 40px 0 0;
  }

  .page-faq .faq-body {
    padding: 72px 0 96px;
  }

  .page-faq .faq-item summary {
    padding: 20px 22px 20px 24px;
    font-size: 16px;
  }

  .page-faq .faq-item__body {
    padding: 0 24px 24px;
  }

  .page-faq .faq-help {
    padding-bottom: 96px;
  }

  .page-faq .faq-help__card {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 48px 56px;
  }

  .page-faq .faq-help__content h2 {
    font-size: 26px;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 280px 1fr;
    gap: 56px;
    align-items: start;
  }

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

  .page-faq .faq-index__content {
    padding: 28px 24px;
  }

  .page-faq .faq-index__nav {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    border: none;
    background: transparent;
    white-space: normal;
    flex-shrink: 1;
    padding: 12px 14px;
    border-radius: var(--kai-radius-sm);
  }

  .page-faq .faq-index__link:hover {
    background: #FFFFFF;
    box-shadow: 0 4px 14px rgba(27, 42, 74, 0.06);
  }

  .page-faq .faq-index__rail {
    display: block;
    position: absolute;
    left: -12px;
    top: 8px;
    writing-mode: vertical-rl;
    font-family: var(--kai-font-mono);
    font-size: 11px;
    letter-spacing: 0.5em;
    color: var(--kai-orange);
    opacity: 0.6;
  }

  .page-faq .faq-group__title {
    font-size: 24px;
  }
}