/* ===== 页面专属：FAQ 问答中心 ===== */
.page-faq {
  --faq-hero-bg: var(--color-primary, #1A3A6B);
  --faq-hero-text: var(--color-white, #FFFFFF);
  --faq-accent: var(--color-accent, #00C853);
  --faq-divider: rgba(26,58,107,0.12);
  --faq-answer-bg: rgba(232,240,254,0.35);
  --faq-radius: 0;
  --faq-search-border: rgba(255,255,255,0.3);
  --faq-cta-bg: var(--color-bg-light, #E8F0FE);
  font-family: var(--font-body, 'Inter Light', -apple-system, BlinkMacSystemFont, sans-serif);
  color: var(--color-text-primary, #1A1A2E);
  line-height: var(--line-height, 1.6);
}

/* ---- 容器 ---- */
.page-faq .container {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---- 辅助类 ---- */
.page-faq .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ===== 顶部标题区 ===== */
.page-faq .faq-hero {
  background: var(--faq-hero-bg);
  color: var(--faq-hero-text);
  padding: 2.5rem 0 3rem;
  position: relative;
  overflow: hidden;
}

/* 几何装饰纹理（海报式分层） */
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -15%;
  width: 45%;
  height: 200%;
  background: rgba(255,255,255,0.03);
  transform: rotate(12deg);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--faq-accent), transparent 80%);
}

.page-faq .faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-family: var(--font-body);
  color: rgba(255,255,255,0.7);
  margin-bottom: 1.5rem;
}
.page-faq .faq-breadcrumb a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  transition: color 0.2s;
}
.page-faq .faq-breadcrumb a:hover {
  color: var(--faq-accent);
}
.page-faq .faq-breadcrumb-sep {
  color: rgba(255,255,255,0.4);
}

.page-faq .faq-hero-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-icon {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin-bottom: 0.75rem;
  opacity: 0.9;
  filter: brightness(0) invert(1);
  border-radius: 0;
}

.page-faq .faq-hero-title {
  font-family: var(--font-heading, 'Montserrat Black', Arial, sans-serif);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
  line-height: 1.1;
  text-transform: uppercase;
}

.page-faq .faq-hero-desc {
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(255,255,255,0.8);
  margin: 0 0 1.5rem;
  max-width: 480px;
  line-height: 1.5;
}

/* ---- 搜索框 ---- */
.page-faq .faq-search {
  position: relative;
  width: 100%;
  max-width: 520px;
}
.page-faq .faq-search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.8rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--faq-hero-text);
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--faq-search-border);
  border-radius: var(--faq-radius);
  outline: none;
  transition: background 0.25s, border-color 0.25s;
  box-sizing: border-box;
}
.page-faq .faq-search-input::placeholder {
  color: rgba(255,255,255,0.5);
  font-weight: 300;
}
.page-faq .faq-search-input:focus {
  background: rgba(255,255,255,0.18);
  border-color: var(--faq-accent);
  box-shadow: 0 0 0 3px rgba(0,200,83,0.15);
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  line-height: 1;
  color: rgba(255,255,255,0.5);
  pointer-events: none;
}

/* ===== 主体内容 ===== */
.page-faq .faq-content {
  background: var(--color-white, #FFFFFF);
  padding: 3rem 0 2rem;
}

.page-faq .faq-section {
  margin-bottom: 2.8rem;
}
.page-faq .faq-section:last-of-type {
  margin-bottom: 1.5rem;
}

.page-faq .faq-section-title {
  font-family: var(--font-heading, 'Montserrat Black', Arial, sans-serif);
  font-weight: 900;
  font-size: clamp(1.3rem, 2.8vw, 1.8rem);
  color: var(--color-primary, #1A3A6B);
  margin: 0 0 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--color-primary, #1A3A6B);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

/* ===== 问答列表 ===== */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ---- 单个问答项 ---- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-divider);
  transition: background 0.2s;
}
.page-faq .faq-item:first-child {
  border-top: 1px solid var(--faq-divider);
}
.page-faq .faq-item:hover {
  background: rgba(232,240,254,0.2);
}

/* ---- 问题（summary） ---- */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 0.5rem 1rem 0;
  font-family: var(--font-body, 'Inter Light', -apple-system, BlinkMacSystemFont, sans-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-primary, #1A1A2E);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color 0.2s;
  position: relative;
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question::marker {
  display: none;
  content: "";
}

/* 自定义展开/收起指示器 */
.page-faq .faq-question::after {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  margin-left: auto;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--color-primary, #1A3A6B);
  border: 1px solid var(--color-primary, #1A3A6B);
  transition: transform 0.25s, background 0.25s, color 0.25s;
  flex-shrink: 0;
  border-radius: 0;
}
.page-faq .faq-item[open] .faq-question::after {
  content: "–";
  background: var(--color-primary, #1A3A6B);
  color: var(--color-white, #FFFFFF);
}

.page-faq .faq-question:hover {
  color: var(--color-primary, #1A3A6B);
}

/* ---- 答案 ---- */
.page-faq .faq-answer {
  overflow: hidden;
}
.page-faq .faq-answer-inner {
  padding: 0 0.5rem 1.2rem 0;
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--color-text-secondary, #4A5568);
  line-height: 1.7;
  border-left: 3px solid var(--faq-accent);
  padding-left: 1.2rem;
  margin-left: 0.25rem;
}

/* 展开动画（仅展开时播放） */
@keyframes faq-fade-slide {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.page-faq .faq-item[open] .faq-answer-inner {
  animation: faq-fade-slide 0.3s ease forwards;
}

.page-faq .faq-answer-inner p {
  margin: 0 0 0.8rem;
}
.page-faq .faq-answer-inner p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-answer-inner a {
  color: var(--color-primary, #1A3A6B);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  font-weight: 400;
  transition: color 0.2s, text-decoration-color 0.2s;
}
.page-faq .faq-answer-inner a:hover {
  color: var(--faq-accent);
  text-decoration-color: var(--faq-accent);
}

/* 答案中的图片 */
.page-faq .faq-answer-img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0.8rem 0 1rem;
  border: 1px solid var(--faq-divider);
  border-radius: var(--faq-radius);
  object-fit: cover;
  background: var(--color-bg-light, #E8F0FE);
}

/* 联系列表 */
.page-faq .faq-contact-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0.8rem;
}
.page-faq .faq-contact-list li {
  padding: 0.15rem 0;
  font-weight: 300;
}
.page-faq .faq-contact-list a {
  color: var(--color-primary, #1A3A6B);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ===== 底部联系引导 ===== */
.page-faq .faq-cta {
  background: var(--faq-cta-bg);
  padding: 3rem 0;
  text-align: center;
  border-top: 2px solid var(--faq-divider);
}
.page-faq .faq-cta-text {
  font-family: var(--font-heading, 'Montserrat Black', Arial, sans-serif);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-primary, #1A3A6B);
  margin: 0 0 1.2rem;
  letter-spacing: -0.01em;
}
.page-faq .faq-cta-btn {
  display: inline-block;
  padding: 0.8rem 2.4rem;
  font-family: var(--font-body, 'Inter Light', -apple-system, BlinkMacSystemFont, sans-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-white, #FFFFFF);
  background: var(--color-primary, #1A3A6B);
  border: 2px solid var(--color-primary, #1A3A6B);
  text-decoration: none;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
  border-radius: var(--faq-radius);
}
.page-faq .faq-cta-btn:hover {
  background: var(--faq-accent);
  border-color: var(--faq-accent);
  color: var(--color-white, #FFFFFF);
}

/* ===== 响应式 ===== */
/* 移动端优先：窄屏适配 */
@media (max-width: 639px) {
  .page-faq .faq-hero {
    padding: 1.8rem 0 2.2rem;
  }
  .page-faq .faq-hero-icon {
    width: 56px;
    height: 56px;
  }
  .page-faq .faq-hero-title {
    font-size: 1.8rem;
  }
  .page-faq .faq-hero-desc {
    font-size: 0.95rem;
    margin-bottom: 1.2rem;
  }
  .page-faq .faq-search-input {
    padding: 0.65rem 1rem 0.65rem 2.5rem;
    font-size: 0.9rem;
  }
  .page-faq .faq-content {
    padding: 2rem 0 1.5rem;
  }
  .page-faq .faq-section {
    margin-bottom: 2rem;
  }
  .page-faq .faq-section-title {
    font-size: 1.15rem;
  }
  .page-faq .faq-question {
    font-size: 0.93rem;
    padding: 0.85rem 0.25rem 0.85rem 0;
  }
  .page-faq .faq-question::after {
    width: 1.4rem;
    height: 1.4rem;
    font-size: 1.1rem;
  }
  .page-faq .faq-answer-inner {
    font-size: 0.9rem;
    padding-left: 0.9rem;
  }
  .page-faq .faq-cta {
    padding: 2rem 0;
  }
  .page-faq .faq-cta-text {
    font-size: 1.1rem;
  }
  .page-faq .faq-cta-btn {
    padding: 0.65rem 1.8rem;
    font-size: 0.95rem;
  }
}

/* 桌面端 */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 3rem 0 3.8rem;
  }
  .page-faq .faq-hero-icon {
    width: 88px;
    height: 88px;
  }
  .page-faq .faq-content {
    padding: 4rem 0 3rem;
  }
  .page-faq .faq-section {
    margin-bottom: 3.5rem;
  }
  .page-faq .faq-section-title {
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
  }
  .page-faq .faq-question {
    font-size: 1.05rem;
    padding: 1.15rem 0.75rem 1.15rem 0;
  }
  .page-faq .faq-answer-inner {
    padding-left: 1.5rem;
    font-size: 0.98rem;
  }
  .page-faq .faq-answer-img {
    max-width: 480px;
  }
  .page-faq .faq-cta {
    padding: 4rem 0;
  }
  .page-faq .faq-cta-text {
    font-size: 1.5rem;
  }
}

/* 大桌面端额外留白 */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 3.5rem 0 4.5rem;
  }
  .page-faq .faq-content .container {
    padding: 0 2rem;
  }
  .page-faq .faq-question {
    padding: 1.25rem 1rem 1.25rem 0;
  }
  .page-faq .faq-answer-inner {
    padding-left: 2rem;
  }
}