/* ===== 页面专属：page-faq ===== */
.page-faq {
  --faq-gold: var(--color-secondary);
  --faq-card-bg: var(--color-surface-dark);
  --faq-card-border: var(--color-border);
  --faq-card-text: var(--color-text-light);
  --faq-hero-bg: var(--color-bg-dark);
  --faq-hero-text: var(--color-text-light);
  --faq-section-bg: var(--color-bg-light);
  --faq-section-text: var(--color-text-dark);
  --faq-contact-bg: var(--color-bg-dark);
  --faq-contact-text: var(--color-text-light);
  --faq-category-gap: 2.5rem;
  --faq-item-radius: 0;
  --faq-transition: 0.25s ease;
}

/* ---- 面包屑 ---- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem 0.5rem;
  padding: 1rem 1.25rem 0;
  max-width: var(--content-max);
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-light);
  background: transparent;
}

.page-faq .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--faq-transition);
}

.page-faq .breadcrumb a:hover {
  border-bottom-color: var(--color-accent);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--color-text-light);
  opacity: 0.75;
}

.page-faq .breadcrumb [aria-hidden="true"] {
  color: var(--color-border);
  font-weight: 300;
  margin: 0 0.125rem;
}

/* ---- 顶部英雄区 ---- */
.page-faq .faq-hero {
  background: var(--faq-hero-bg);
  padding: 1.5rem 1.25rem 2.5rem;
  border-bottom: 3px solid var(--faq-gold);
}

.page-faq .faq-hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.page-faq .faq-hero__text {
  text-align: center;
}

.page-faq .faq-hero__title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  line-height: 1.1;
  color: var(--faq-hero-text);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.page-faq .faq-hero__desc {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-accent);
  max-width: 36rem;
  margin: 0 auto;
}

.page-faq .faq-hero__desc strong {
  color: var(--faq-gold);
  font-weight: 600;
}

.page-faq .faq-hero__visual {
  flex-shrink: 0;
}

.page-faq .faq-hero__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border: var(--border-thick);
  border-color: var(--color-border);
  box-shadow: var(--shadow-card);
  background: var(--color-surface-dark);
}

/* ---- 常见问题区域 ---- */
.page-faq .faq-section {
  background: var(--faq-section-bg);
  padding: 2.5rem 1.25rem 3rem;
}

.page-faq .faq-section__title {
  text-align: center;
  margin-bottom: 2.5rem;
  color: var(--faq-section-text);
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  position: relative;
}

.page-faq .faq-section__title::after {
  content: "";
  display: block;
  width: 3rem;
  height: 3px;
  background: var(--faq-gold);
  margin: 0.75rem auto 0;
}

/* ---- 分类 ---- */
.page-faq .faq-category {
  margin-bottom: var(--faq-category-gap);
}

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

.page-faq .faq-category__title {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-heading);
  font-size: 1.375rem;
  line-height: 1.3;
  color: var(--faq-section-text);
  margin: 0 0 1.125rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

.page-faq .faq-category__marker {
  display: inline-block;
  width: 0.5rem;
  height: 1.5rem;
  background: var(--faq-gold);
  flex-shrink: 0;
}

.page-faq .faq-category__items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ---- 单个问答项 (details) ---- */
.page-faq .faq-item {
  background: var(--faq-card-bg);
  border: var(--border-thick);
  border-color: var(--faq-card-border);
  box-shadow: var(--shadow-card);
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
  overflow: hidden;
}

.page-faq .faq-item[open] {
  border-color: var(--faq-gold);
  box-shadow: var(--shadow-card-hover);
}

.page-faq .faq-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-hover);
}

.page-faq .faq-item[open]:hover {
  border-color: var(--faq-gold);
}

/* ---- summary 触发区 ---- */
.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.4;
  color: var(--faq-card-text);
  user-select: none;
  transition: background var(--faq-transition);
}

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

.page-faq .faq-item__summary:hover {
  background: rgba(126, 200, 227, 0.06);
}

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: -2px;
}

/* 序号 */
.page-faq .faq-item__number {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 900;
  color: var(--faq-gold);
  min-width: 2rem;
  flex-shrink: 0;
  text-align: right;
  letter-spacing: 0.02em;
}

/* 问题文本 */
.page-faq .faq-item__question {
  flex: 1;
  font-weight: 600;
}

/* 展开/收起指示器 */
.page-faq .faq-item__toggle {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  position: relative;
  transition: transform var(--faq-transition);
}

.page-faq .faq-item__toggle::before,
.page-faq .faq-item__toggle::after {
  content: "";
  position: absolute;
  background: var(--faq-gold);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: transform var(--faq-transition), opacity var(--faq-transition);
}

.page-faq .faq-item__toggle::before {
  width: 2px;
  height: 1rem;
}

.page-faq .faq-item__toggle::after {
  width: 1rem;
  height: 2px;
}

.page-faq .faq-item[open] .faq-item__toggle::before {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-item__toggle::after {
  transform: translate(-50%, -50%) rotate(180deg);
}

/* ---- 答案区域 ---- */
.page-faq .faq-item__answer {
  padding: 0 1.25rem 1.125rem 3.75rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--color-accent);
  border-top: 1px solid rgba(58, 90, 122, 0.35);
  animation: faqFadeIn 0.3s ease forwards;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-item__answer p {
  margin: 0.75rem 0;
}

.page-faq .faq-item__answer p:first-child {
  margin-top: 0;
}

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

.page-faq .faq-item__link {
  color: var(--faq-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--faq-transition);
}

.page-faq .faq-item__link:hover {
  color: var(--color-accent);
}

.page-faq .faq-item__link:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: 2px;
}

/* ---- 联系方式区域 ---- */
.page-faq .faq-contact {
  background: var(--faq-contact-bg);
  padding: 2.5rem 1.25rem 3rem;
  border-top: 3px solid var(--faq-gold);
}

.page-faq .faq-contact__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-faq .faq-contact__info {
  order: 1;
}

.page-faq .faq-contact__title {
  color: var(--faq-contact-text);
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.page-faq .faq-contact__title::after {
  content: "";
  display: block;
  width: 3rem;
  height: 3px;
  background: var(--faq-gold);
  margin-top: 0.625rem;
}

.page-faq .faq-contact__note {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-accent);
  margin: 0 0 1.5rem;
  max-width: 32rem;
}

.page-faq .faq-contact__list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-faq .faq-contact__item {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  padding: 0.875rem 1rem;
  background: var(--color-surface-dark);
  border-left: 4px solid var(--faq-gold);
  border: var(--border-thick);
  border-left-width: 4px;
  border-color: var(--color-border);
  border-left-color: var(--faq-gold);
}

.page-faq .faq-contact__label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--faq-gold);
}

.page-faq .faq-contact__value {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.4;
  color: var(--faq-contact-text);
  word-break: break-all;
}

.page-faq .faq-contact__reply {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-accent);
  margin: 0 0 1.25rem;
  padding: 0.75rem 1rem;
  background: rgba(126, 200, 227, 0.08);
  border-left: 3px solid var(--color-accent);
}

.page-faq .faq-contact__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--faq-contact-text);
  background: transparent;
  border: var(--border-thick);
  border-color: var(--faq-gold);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--faq-transition), color var(--faq-transition);
}

.page-faq .faq-contact__btn:hover {
  background: var(--faq-gold);
  color: var(--color-bg-dark);
}

.page-faq .faq-contact__btn:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: 2px;
}

.page-faq .faq-contact__visual {
  order: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-faq .faq-contact__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border: var(--border-thick);
  border-color: var(--color-border);
  box-shadow: var(--shadow-card);
  background: var(--color-surface-dark);
}

/* ---- 桌面端 >= 768px ---- */
@media (min-width: 768px) {
  .page-faq .breadcrumb {
    padding: 1.25rem 2rem 0;
    font-size: 0.9375rem;
  }

  .page-faq .faq-hero {
    padding: 2rem 2rem 3rem;
  }

  .page-faq .faq-hero__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 2.5rem;
  }

  .page-faq .faq-hero__text {
    text-align: left;
    flex: 1;
  }

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

  .page-faq .faq-hero__title {
    font-size: 3rem;
  }

  .page-faq .faq-hero__visual {
    flex-shrink: 0;
  }

  .page-faq .faq-section {
    padding: 3.5rem 2rem 4rem;
  }

  .page-faq .faq-section__title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
  }

  .page-faq .faq-category__title {
    font-size: 1.5rem;
  }

  .page-faq .faq-category__items {
    gap: 1rem;
  }

  .page-faq .faq-item__summary {
    padding: 1.125rem 1.5rem;
    font-size: 1.0625rem;
  }

  .page-faq .faq-item__answer {
    padding: 0 1.5rem 1.25rem 4rem;
    font-size: 0.9375rem;
  }

  .page-faq .faq-contact {
    padding: 3.5rem 2rem 4rem;
  }

  .page-faq .faq-contact__inner {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }

  .page-faq .faq-contact__info {
    flex: 1;
    order: 0;
  }

  .page-faq .faq-contact__visual {
    flex-shrink: 0;
    order: 0;
    margin-top: 2.5rem;
  }

  .page-faq .faq-contact__title {
    font-size: 2.5rem;
  }

  .page-faq .faq-contact__item {
    flex-direction: row;
    align-items: baseline;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
  }

  .page-faq .faq-contact__label {
    min-width: 5.5rem;
    font-size: 0.8125rem;
  }

  .page-faq .faq-contact__value {
    font-size: 1.0625rem;
  }
}

/* ---- 桌面端 >= 1024px ---- */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 2.5rem 2rem 3.5rem;
  }

  .page-faq .faq-hero__title {
    font-size: 3.5rem;
  }

  .page-faq .faq-section {
    padding: 4rem 2rem 5rem;
  }

  .page-faq .faq-contact {
    padding: 4rem 2rem 5rem;
  }

  .page-faq .faq-contact__visual {
    margin-top: 0;
  }

  .page-faq .faq-contact__img {
    width: 400px;
    height: 200px;
  }
}