.page-faq {
  --faq-number-size: 5rem;
  --faq-hero-min-height: 320px;
  --faq-item-radius: 4px;
  --faq-slant-offset: 1.2rem;
}
.page-faq .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--container-padding, 20px);
}
.page-faq a {
  color: var(--color-primary, #DC143C);
  text-decoration: none;
}
.page-faq a:hover,
.page-faq a:focus-visible {
  color: var(--color-primary-hover, #FF4500);
  text-decoration: underline;
}

/* ===== 面包屑 ===== */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  color: var(--color-text-secondary, #B0B0B0);
  margin-bottom: 1.5rem;
}
.page-faq .breadcrumb a {
  color: var(--color-text-secondary, #B0B0B0);
  transition: color 0.2s;
}
.page-faq .breadcrumb a:hover {
  color: var(--color-primary, #DC143C);
  text-decoration: none;
}
.page-faq .breadcrumb__sep {
  color: var(--color-border, #333);
  user-select: none;
}

/* ===== Hero 区域 ===== */
.page-faq .faq-hero {
  position: relative;
  min-height: var(--faq-hero-min-height);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 3rem 0 2.5rem;
}
.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}
.page-faq .faq-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.page-faq .faq-hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.92) 30%, rgba(10,10,10,0.6) 70%, rgba(220,20,60,0.35) 100%);
  pointer-events: none;
}
.page-faq .faq-hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
}
.page-faq .faq-hero__title {
  font-family: var(--font-heading, 'Oswald', sans-serif);
  font-size: clamp(2.2rem, 7vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.page-faq .faq-hero__title-accent {
  color: var(--color-primary, #DC143C);
  display: inline-block;
}
.page-faq .faq-hero__subtitle {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.6;
  color: var(--color-text-secondary, #B0B0B0);
  max-width: 680px;
  margin: 0 0 1.8rem;
}
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  max-width: 520px;
  background: var(--color-surface, #1A1A1A);
  border: 1px solid var(--color-border, #333);
  border-radius: var(--faq-item-radius);
  padding: 0.4rem 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.page-faq .faq-search:focus-within {
  border-color: var(--color-primary, #DC143C);
  box-shadow: 0 0 0 3px rgba(220,20,60,0.2);
}
.page-faq .faq-search__icon {
  flex-shrink: 0;
  color: var(--color-text-secondary, #B0B0B0);
  width: 20px;
  height: 20px;
}
.page-faq .faq-search__input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1rem;
  color: var(--color-text, #FFFFFF);
  padding: 0.6rem 0;
}
.page-faq .faq-search__input::placeholder {
  color: var(--color-text-secondary, #B0B0B0);
  opacity: 0.7;
}

/* ===== FAQ 列表 ===== */
.page-faq .faq-list {
  padding-top: 0.5rem;
  padding-bottom: 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-faq .faq-item {
  position: relative;
}
.page-faq .faq-item__inner {
  position: relative;
  background: var(--color-surface, #1A1A1A);
  border-left: 4px solid var(--color-primary, #DC143C);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-slant-offset)), 0 100%);
  padding: 2rem 1.8rem 2.8rem;
  transition: box-shadow 0.3s;
}
.page-faq .faq-item__inner:hover {
  box-shadow: 0 4px 28px rgba(220,20,60,0.12);
}
.page-faq .faq-item__number {
  position: absolute;
  top: 0.2rem;
  right: 1rem;
  font-family: var(--font-heading, 'Oswald', sans-serif);
  font-size: var(--faq-number-size);
  font-weight: 900;
  line-height: 1;
  color: rgba(220,20,60,0.08);
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.03em;
}
.page-faq .faq-item__details {
  position: relative;
  z-index: 1;
}
.page-faq .faq-item__details[open] .faq-item__toggle svg {
  transform: rotate(45deg);
}
.page-faq .faq-item__question {
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
  padding: 0.2rem 0;
}
.page-faq .faq-item__question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__question::marker {
  display: none;
  content: '';
}
.page-faq .faq-item__heading {
  font-family: var(--font-heading, 'Oswald', sans-serif);
  font-size: clamp(1.2rem, 3vw, 1.65rem);
  font-weight: 700;
  color: var(--color-text, #FFFFFF);
  margin: 0;
  line-height: 1.3;
  letter-spacing: 0.01em;
  transition: color 0.2s;
}
.page-faq .faq-item__question:hover .faq-item__heading {
  color: var(--color-primary, #DC143C);
}
.page-faq .faq-item__toggle {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(220,20,60,0.1);
  color: var(--color-primary, #DC143C);
  transition: background 0.3s, transform 0.3s;
}
.page-faq .faq-item__question:hover .faq-item__toggle {
  background: rgba(220,20,60,0.2);
}
.page-faq .faq-item__toggle svg {
  transition: transform 0.35s ease;
}

/* ===== 答案区域 ===== */
.page-faq .faq-item__answer {
  padding-top: 1.4rem;
  border-top: 1px solid var(--color-border, #333);
  margin-top: 1rem;
}
.page-faq .faq-item__answer-body {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  max-width: 780px;
}
.page-faq .faq-item__answer-body p {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0;
}
.page-faq .faq-item__answer-body .highlight-code {
  color: var(--color-text, #FFFFFF);
  background: rgba(220,20,60,0.18);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  font-weight: 600;
}
.page-faq .faq-item__answer-body code {
  font-family: var(--font-mono, 'Fira Code', monospace);
  color: var(--color-accent-blue, #00BFFF);
  background: rgba(0,191,255,0.1);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  font-size: 0.92em;
}
.page-faq .faq-item__demo {
  margin: 0.4rem 0 0.2rem;
  border-radius: var(--faq-item-radius);
  overflow: hidden;
  border: 1px solid var(--color-border, #333);
  max-width: 640px;
}
.page-faq .faq-item__demo img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-faq .faq-item__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 0.2rem;
}
.page-faq .faq-item__actions .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.6rem;
  font-family: var(--font-heading, 'Oswald', sans-serif);
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--faq-item-radius);
  transition: background 0.25s, color 0.25s, transform 0.2s;
  background: var(--color-primary, #DC143C);
  color: #fff;
  border: none;
  cursor: pointer;
  line-height: 1.4;
  text-decoration: none;
}
.page-faq .faq-item__actions .btn:hover {
  background: var(--color-primary-hover, #FF4500);
  color: #fff;
  transform: translateY(-1px);
  text-decoration: none;
}
.page-faq .faq-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.4rem;
}
.page-faq .faq-item__tags .tag {
  display: inline-block;
  padding: 0.2rem 0.8rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-accent-gold, #FFD700);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 20px;
  background: rgba(255,215,0,0.06);
  letter-spacing: 0.02em;
}
.page-faq .faq-item__contact-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.2rem;
  background: rgba(10,10,10,0.5);
  border: 1px solid var(--color-border, #333);
  border-left: 3px solid var(--color-primary, #DC143C);
  padding: 1rem 1.4rem;
  border-radius: var(--faq-item-radius);
  max-width: 520px;
}
.page-faq .faq-item__contact-label {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.82rem;
  color: var(--color-text-secondary, #B0B0B0);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-basis: 100%;
}
.page-faq .faq-item__contact-value {
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 1.05rem;
  color: var(--color-primary, #DC143C);
  font-weight: 600;
  word-break: break-all;
}
.page-faq .faq-item__contact-note {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  color: var(--color-accent-gold, #FFD700);
  background: rgba(255,215,0,0.08);
  padding: 0.2rem 0.7rem;
  border-radius: 12px;
  border: 1px solid rgba(255,215,0,0.2);
}

/* ===== CTA 区域 ===== */
.page-faq .faq-cta {
  padding: 1.5rem 0 4rem;
}
.page-faq .faq-cta__card {
  background: var(--color-surface, #1A1A1A);
  border: 1px solid var(--color-border, #333);
  clip-path: polygon(0 0, 100% 1.5rem, 100% calc(100% - 1.5rem), 0 100%);
  padding: 3rem 2.5rem;
  text-align: center;
  transition: border-color 0.3s;
}
.page-faq .faq-cta__card:hover {
  border-color: rgba(220,20,60,0.3);
}
.page-faq .faq-cta__title {
  font-family: var(--font-heading, 'Oswald', sans-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--color-text, #FFFFFF);
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.page-faq .faq-cta__text {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #B0B0B0);
  max-width: 520px;
  margin: 0 auto 1.8rem;
}
.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}
.page-faq .faq-cta__actions .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 2rem;
  font-family: var(--font-heading, 'Oswald', sans-serif);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--faq-item-radius);
  transition: background 0.25s, color 0.25s, transform 0.2s;
  background: var(--color-primary, #DC143C);
  color: #fff;
  border: none;
  cursor: pointer;
  line-height: 1.4;
  text-decoration: none;
}
.page-faq .faq-cta__actions .btn:hover {
  background: var(--color-primary-hover, #FF4500);
  color: #fff;
  transform: translateY(-2px);
  text-decoration: none;
}
.page-faq .faq-cta__actions .btn--outline {
  background: transparent;
  color: var(--color-text, #FFFFFF);
  border: 2px solid var(--color-border, #333);
}
.page-faq .faq-cta__actions .btn--outline:hover {
  border-color: var(--color-primary, #DC143C);
  color: var(--color-primary, #DC143C);
  background: rgba(220,20,60,0.06);
}

/* ===== 响应式：移动端优先 ===== */
@media (max-width: 639px) {
  .page-faq .faq-hero {
    min-height: 280px;
    padding: 2rem 0 1.8rem;
  }
  .page-faq .faq-hero__bg {
    clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
  }
  .page-faq .faq-hero__title {
    font-size: clamp(1.6rem, 8vw, 2.4rem);
  }
  .page-faq .faq-hero__subtitle {
    font-size: 0.92rem;
    margin-bottom: 1.2rem;
  }
  .page-faq .faq-search {
    max-width: 100%;
    padding: 0.2rem 0.8rem;
  }
  .page-faq .faq-search__input {
    font-size: 0.92rem;
    padding: 0.5rem 0;
  }
  .page-faq .faq-item__inner {
    padding: 1.5rem 1.2rem 2.2rem;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 0.8rem), 0 100%);
  }
  .page-faq .faq-item__number {
    font-size: 3.5rem;
    right: 0.6rem;
    top: 0.1rem;
  }
  .page-faq .faq-item__heading {
    font-size: 1.15rem;
  }
  .page-faq .faq-item__toggle {
    width: 30px;
    height: 30px;
  }
  .page-faq .faq-item__toggle svg {
    width: 15px;
    height: 15px;
  }
  .page-faq .faq-item__answer-body {
    gap: 0.8rem;
  }
  .page-faq .faq-item__contact-card {
    padding: 0.8rem 1rem;
  }
  .page-faq .faq-item__contact-value {
    font-size: 0.92rem;
    flex-basis: 100%;
  }
  .page-faq .faq-cta__card {
    clip-path: polygon(0 0, 100% 0.8rem, 100% calc(100% - 0.8rem), 0 100%);
    padding: 2rem 1.2rem;
  }
  .page-faq .faq-cta__actions .btn {
    width: 100%;
    justify-content: center;
  }
}
@media (min-width: 640px) and (max-width: 1023px) {
  .page-faq .faq-hero {
    min-height: 300px;
    padding: 2.5rem 0 2rem;
  }
  .page-faq .faq-item__inner {
    padding: 1.8rem 1.6rem 2.5rem;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1rem), 0 100%);
  }
  .page-faq .faq-item__number {
    font-size: 4rem;
  }
  .page-faq .faq-item__heading {
    font-size: 1.3rem;
  }
  .page-faq .faq-cta__card {
    clip-path: polygon(0 0, 100% 1rem, 100% calc(100% - 1rem), 0 100%);
    padding: 2.5rem 2rem;
  }
}
@media (min-width: 1024px) {
  .page-faq .faq-list {
    gap: 2.5rem;
  }
  .page-faq .faq-item__inner {
    padding: 2.4rem 2.2rem 3rem;
  }
  .page-faq .faq-item__number {
    font-size: 6rem;
    right: 1.8rem;
  }
  .page-faq .faq-item__answer-body {
    gap: 1.4rem;
  }
  .page-faq .faq-item__answer-body p {
    font-size: 1.05rem;
  }
  .page-faq .faq-cta__card {
    padding: 3.5rem 3rem;
  }
}