/* ===== page-faq 专属样式 ===== */
.page-faq {
  --faq-hero-bg: #F4F6F9;
  --faq-tag-radius: 40px;
  --faq-item-radius: 12px;
  --faq-group-gap: 32px;
  --faq-color-login: #0B3D5F;
  --faq-color-download: #FF6B35;
  --faq-color-service: #00B4D8;
  --faq-color-other: #8B9BB4;
  --faq-color-all: #0B3D5F;
  position: relative;
  background: var(--faq-hero-bg);
  min-height: 60vh;
  padding-bottom: 3rem;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 1rem 1.25rem 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary, #8B9BB4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
}
.page-faq .breadcrumb a {
  color: var(--color-accent-blue, #00B4D8);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s ease);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
}
.page-faq .breadcrumb__separator {
  margin: 0 0.125rem;
  user-select: none;
  color: var(--color-border, #8B9BB4);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--color-text, #1A1A2E);
  font-weight: 500;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  background: var(--faq-hero-bg);
  padding: 1.5rem 0 2.5rem;
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero .container {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.page-faq .faq-hero__title {
  font-family: var(--font-heading, "Source Han Sans SC", "Noto Sans SC", sans-serif);
  font-weight: 700;
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  color: var(--color-primary, #0B3D5F);
  margin: 0 0 0.25rem;
  line-height: 1.2;
  letter-spacing: 0.01em;
}
.page-faq .faq-hero__desc {
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  font-size: 1rem;
  color: var(--color-text-secondary, #8B9BB4);
  margin: 0 0 1.5rem;
  line-height: 1.5;
  max-width: 560px;
}

/* ---------- 搜索框（装饰） ---------- */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  background: #ffffff;
  border: var(--border-thin, 1px solid rgba(139,155,180,0.3));
  border-radius: 48px;
  padding: 0 1rem 0 1.25rem;
  max-width: 480px;
  margin-bottom: 1.75rem;
  box-shadow: 0 2px 8px rgba(11,61,95,0.04);
  transition: box-shadow var(--transition-fast, 0.2s ease), border-color var(--transition-fast, 0.2s ease);
}
.page-faq .faq-search:focus-within {
  box-shadow: 0 4px 16px rgba(11,61,95,0.08);
  border-color: var(--color-accent-blue, #00B4D8);
}
.page-faq .faq-search__icon {
  font-size: 1.125rem;
  line-height: 1;
  color: var(--color-text-secondary, #8B9BB4);
  margin-right: 0.5rem;
  flex-shrink: 0;
}
.page-faq .faq-search__input {
  flex: 1;
  border: none;
  background: transparent;
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  font-size: 0.95rem;
  padding: 0.75rem 0;
  color: var(--color-text, #1A1A2E);
  outline: none;
  cursor: default;
}
.page-faq .faq-search__input::placeholder {
  color: var(--color-text-secondary, #8B9BB4);
  opacity: 0.7;
}

/* ---------- 分类标签（radio 驱动） ---------- */
.page-faq .faq-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  align-items: center;
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1.125rem 0.5rem 0.875rem;
  border-radius: var(--faq-tag-radius);
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  font-size: 0.9rem;
  font-weight: 500;
  border: 2px solid transparent;
  background: #ffffff;
  color: var(--color-text, #1A1A2E);
  cursor: pointer;
  transition: background var(--transition-fast, 0.2s ease), border-color var(--transition-fast, 0.2s ease), box-shadow var(--transition-fast, 0.2s ease);
  box-shadow: 0 1px 4px rgba(11,61,95,0.04);
  user-select: none;
  line-height: 1.3;
}
.page-faq .faq-tag:hover {
  box-shadow: 0 4px 12px rgba(11,61,95,0.08);
}
.page-faq .faq-tag:focus-visible {
  outline: 2px solid var(--color-accent-blue, #00B4D8);
  outline-offset: 2px;
}
.page-faq .faq-tag__icon {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}

/* 默认（未选中）标签颜色——边框体现分类色 */
.page-faq .faq-tag--login { border-color: var(--faq-color-login); }
.page-faq .faq-tag--download { border-color: var(--faq-color-download); }
.page-faq .faq-tag--service { border-color: var(--faq-color-service); }
.page-faq .faq-tag--other { border-color: var(--faq-color-other); }
.page-faq .faq-tag--all { border-color: var(--faq-color-all); }

/* 选中态：radio:checked ~ .faq-hero 下对应标签高亮 */
#faq-all:checked ~ .faq-hero .faq-tag--all {
  background: var(--faq-color-all);
  color: #ffffff;
  border-color: var(--faq-color-all);
  box-shadow: 0 4px 14px rgba(11,61,95,0.18);
}
#faq-login:checked ~ .faq-hero .faq-tag--login {
  background: var(--faq-color-login);
  color: #ffffff;
  border-color: var(--faq-color-login);
  box-shadow: 0 4px 14px rgba(11,61,95,0.18);
}
#faq-download:checked ~ .faq-hero .faq-tag--download {
  background: var(--faq-color-download);
  color: #ffffff;
  border-color: var(--faq-color-download);
  box-shadow: 0 4px 14px rgba(255,107,53,0.18);
}
#faq-service:checked ~ .faq-hero .faq-tag--service {
  background: var(--faq-color-service);
  color: #ffffff;
  border-color: var(--faq-color-service);
  box-shadow: 0 4px 14px rgba(0,180,216,0.18);
}
#faq-other:checked ~ .faq-hero .faq-tag--other {
  background: var(--faq-color-other);
  color: #ffffff;
  border-color: var(--faq-color-other);
  box-shadow: 0 4px 14px rgba(139,155,180,0.18);
}

/* 选中态下图标反白（用滤镜简单处理） */
#faq-all:checked ~ .faq-hero .faq-tag--all .faq-tag__icon,
#faq-login:checked ~ .faq-hero .faq-tag--login .faq-tag__icon,
#faq-download:checked ~ .faq-hero .faq-tag--download .faq-tag__icon,
#faq-service:checked ~ .faq-hero .faq-tag--service .faq-tag__icon,
#faq-other:checked ~ .faq-hero .faq-tag--other .faq-tag__icon {
  filter: brightness(0) invert(1);
}

/* ---------- 手风琴区域 ---------- */
.page-faq .faq-content {
  position: relative;
  z-index: 1;
  padding: 0.5rem 0 0;
}
.page-faq .faq-content .container {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- 分类组 ---------- */
.page-faq .faq-group {
  display: block;
  margin-bottom: var(--faq-group-gap);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.page-faq .faq-group__title {
  font-family: var(--font-heading, "Source Han Sans SC", "Noto Sans SC", sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary, #0B3D5F);
  margin: 0 0 0.75rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--color-accent-blue, #00B4D8);
  line-height: 1.3;
}
.page-faq .faq-group[data-category="login"] .faq-group__title { border-left-color: var(--faq-color-login); }
.page-faq .faq-group[data-category="download"] .faq-group__title { border-left-color: var(--faq-color-download); }
.page-faq .faq-group[data-category="service"] .faq-group__title { border-left-color: var(--faq-color-service); }
.page-faq .faq-group[data-category="other"] .faq-group__title { border-left-color: var(--faq-color-other); }

/* ---------- 过滤逻辑 ---------- */
#faq-all:checked ~ .faq-content .faq-group { display: block; }
#faq-login:checked ~ .faq-content .faq-group[data-category="login"] { display: block; }
#faq-login:checked ~ .faq-content .faq-group:not([data-category="login"]) { display: none; }
#faq-download:checked ~ .faq-content .faq-group[data-category="download"] { display: block; }
#faq-download:checked ~ .faq-content .faq-group:not([data-category="download"]) { display: none; }
#faq-service:checked ~ .faq-content .faq-group[data-category="service"] { display: block; }
#faq-service:checked ~ .faq-content .faq-group:not([data-category="service"]) { display: none; }
#faq-other:checked ~ .faq-content .faq-group[data-category="other"] { display: block; }
#faq-other:checked ~ .faq-content .faq-group:not([data-category="other"]) { display: none; }

/* ---------- 单个问题（details/summary） ---------- */
.page-faq .faq-item {
  background: #ffffff;
  border-radius: var(--faq-item-radius);
  box-shadow: var(--shadow-card, 0 2px 12px rgba(11,61,95,0.08));
  border: var(--border-thin, 1px solid rgba(139,155,180,0.3));
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: box-shadow var(--transition-fast, 0.2s ease), border-color var(--transition-fast, 0.2s ease);
}
.page-faq .faq-item:hover {
  box-shadow: var(--shadow-hover, 0 6px 24px rgba(11,61,95,0.14));
}
.page-faq .faq-item[open] {
  border-color: var(--color-accent-blue, #00B4D8);
  box-shadow: 0 4px 20px rgba(0,180,216,0.10);
}
.page-faq .faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text, #1A1A2E);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--transition-fast, 0.2s ease);
}
.page-faq .faq-item__question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__question:hover {
  background: rgba(0,180,216,0.03);
}
.page-faq .faq-item__question:focus-visible {
  outline: 2px solid var(--color-accent-blue, #00B4D8);
  outline-offset: -2px;
  background: rgba(0,180,216,0.04);
}
.page-faq .faq-item__text {
  flex: 1;
  line-height: 1.4;
}
.page-faq .faq-item__arrow {
  flex-shrink: 0;
  font-size: 0.75rem;
  color: var(--color-text-secondary, #8B9BB4);
  transition: transform var(--transition-base, 0.35s ease);
  line-height: 1;
}
.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(180deg);
  color: var(--color-accent-blue, #00B4D8);
}

.page-faq .faq-item__answer {
  padding: 0 1.25rem 1.125rem;
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  font-size: 0.95rem;
  color: var(--color-text, #1A1A2E);
  line-height: 1.6;
  border-top: 1px solid rgba(139,155,180,0.12);
  margin-top: 0;
}
.page-faq .faq-item__answer p {
  margin: 0.75rem 0 0;
}
.page-faq .faq-item__answer a {
  color: var(--color-accent-blue, #00B4D8);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast, 0.2s ease);
}
.page-faq .faq-item__answer a:hover,
.page-faq .faq-item__answer a:focus-visible {
  color: var(--color-accent, #FF6B35);
}

/* ---------- 装饰点阵（仅视觉） ---------- */
.page-faq .faq-decoration {
  position: fixed;
  right: 0;
  bottom: 0;
  width: 300px;
  height: 600px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.08;
  overflow: hidden;
}
.page-faq .faq-decoration__dot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== 响应式 ===== */
/* 窄屏：小于600px */
@media (max-width: 599px) {
  .page-faq .faq-hero {
    padding: 1rem 0 1.75rem;
  }
  .page-faq .faq-hero__title {
    font-size: 1.6rem;
  }
  .page-faq .faq-hero__desc {
    font-size: 0.9rem;
    margin-bottom: 1rem;
  }
  .page-faq .faq-search {
    max-width: 100%;
    margin-bottom: 1.25rem;
  }
  .page-faq .faq-search__input {
    font-size: 0.875rem;
    padding: 0.6rem 0;
  }
  .page-faq .faq-filters {
    gap: 0.5rem;
  }
  .page-faq .faq-tag {
    padding: 0.375rem 0.875rem 0.375rem 0.75rem;
    font-size: 0.8rem;
  }
  .page-faq .faq-tag__icon {
    width: 16px;
    height: 16px;
  }
  .page-faq .breadcrumb {
    padding: 0.625rem 1rem 0;
    font-size: 0.8rem;
  }
  .page-faq .faq-content .container {
    padding: 0 1rem;
  }
  .page-faq .faq-group__title {
    font-size: 1.1rem;
    padding-left: 0.5rem;
  }
  .page-faq .faq-item__question {
    padding: 0.8rem 1rem;
    font-size: 0.9rem;
  }
  .page-faq .faq-item__answer {
    padding: 0 1rem 0.875rem;
    font-size: 0.875rem;
  }
  .page-faq .faq-decoration {
    width: 150px;
    height: 300px;
    opacity: 0.04;
  }
}

/* 中屏：600-1023px */
@media (min-width: 600px) and (max-width: 1023px) {
  .page-faq .faq-hero {
    padding: 1.25rem 0 2rem;
  }
  .page-faq .faq-filters {
    gap: 0.75rem;
  }
  .page-faq .faq-tag {
    padding: 0.5rem 1rem 0.5rem 0.875rem;
  }
  .page-faq .faq-group__title {
    font-size: 1.2rem;
  }
}

/* 桌面：≥1024px */
@media (min-width: 1024px) {
  .page-faq {
    padding-bottom: 4rem;
  }
  .page-faq .faq-hero {
    padding: 2rem 0 3rem;
  }
  .page-faq .faq-hero .container,
  .page-faq .faq-content .container,
  .page-faq .breadcrumb {
    padding-left: 2rem;
    padding-right: 2rem;
  }
  .page-faq .faq-hero__desc {
    font-size: 1.05rem;
  }
  .page-faq .faq-search {
    max-width: 520px;
    margin-bottom: 2rem;
  }
  .page-faq .faq-filters {
    gap: 0.875rem;
  }
  .page-faq .faq-tag {
    padding: 0.625rem 1.375rem 0.625rem 1rem;
    font-size: 0.95rem;
  }
  .page-faq .faq-tag__icon {
    width: 24px;
    height: 24px;
  }
  .page-faq .faq-group {
    margin-bottom: 2.5rem;
  }
  .page-faq .faq-group__title {
    font-size: 1.45rem;
    margin-bottom: 1rem;
    padding-left: 1rem;
  }
  .page-faq .faq-item__question {
    padding: 1.125rem 1.5rem;
    font-size: 1.05rem;
  }
  .page-faq .faq-item__answer {
    padding: 0 1.5rem 1.25rem;
    font-size: 0.975rem;
  }
  .page-faq .faq-item__answer p {
    margin-top: 0.875rem;
  }
}

/* 超大屏：≥1440px 增加两侧呼吸空间 */
@media (min-width: 1440px) {
  .page-faq .faq-hero .container,
  .page-faq .faq-content .container,
  .page-faq .breadcrumb {
    max-width: 1120px;
  }
}