/* ===== 页面专属 CSS — .page-faq ===== */
.page-faq {
  --faq-gold-grad: linear-gradient(135deg, #D4AF37, #F0D86E);
  --faq-red-dot: #E63946;
  --faq-cream-bg: #F5F0E1;
  --faq-dark-blue: #0A2A4A;
  --faq-deep-brown: #2C1E16;
  --faq-white: #FFFFFF;
  --faq-radius: 4px;
  --faq-transition: 0.3s ease;

  display: block;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
  background-color: var(--faq-white);
  color: var(--faq-deep-brown);
  font-family: "Inter", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

/* ── 面包屑 ── */
.faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  color: var(--faq-dark-blue);
  opacity: 0.75;
}
.faq-breadcrumb a {
  color: var(--faq-dark-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--faq-transition);
}
.faq-breadcrumb a:hover,
.faq-breadcrumb a:focus-visible {
  border-bottom-color: var(--faq-dark-blue);
}
.faq-breadcrumb-sep {
  font-size: 0.6rem;
  color: var(--faq-red-dot);
  opacity: 0.6;
}
.faq-breadcrumb [aria-current="page"] {
  font-weight: 600;
  color: var(--faq-dark-blue);
}

/* ── 页面标题 ── */
.faq-hero {
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--faq-dark-blue);
}
.faq-hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--faq-gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0 0 0.5rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.faq-hero-desc {
  font-size: 1.125rem;
  color: var(--faq-deep-brown);
  opacity: 0.8;
  margin: 0;
  max-width: 36em;
}

/* ── 通用章节 ── */
.faq-section {
  margin-bottom: 3.5rem;
}
.faq-section-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--faq-dark-blue);
  margin: 0 0 1rem;
  padding: 0.75rem 0 0.5rem;
  border-bottom: 3px solid var(--faq-gold-grad);
  letter-spacing: -0.01em;
}
.faq-section-title-icon {
  color: var(--faq-red-dot);
  font-size: 1.2rem;
  line-height: 1;
}
.faq-section-title-light {
  color: var(--faq-white);
  border-bottom-color: var(--faq-gold-grad);
}
.faq-section-desc {
  font-size: 1rem;
  color: var(--faq-deep-brown);
  opacity: 0.85;
  margin: -0.5rem 0 1.5rem;
  max-width: 42em;
}
.faq-section-desc a {
  color: var(--faq-dark-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--faq-gold-grad);
  font-weight: 600;
}
.faq-section-desc a:hover {
  text-decoration-color: var(--faq-red-dot);
}

/* ── 折叠面板 ── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.faq-item {
  background-color: var(--faq-cream-bg);
  border-left: 4px solid var(--faq-red-dot);
  border-radius: var(--faq-radius);
  transition: box-shadow var(--faq-transition);
}
.faq-item[open] {
  box-shadow: 0 2px 12px rgba(10, 42, 74, 0.12);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--faq-dark-blue);
  cursor: pointer;
  list-style: none;
  -webkit-user-select: none;
  user-select: none;
  transition: background-color var(--faq-transition);
  position: relative;
}
.faq-question::-webkit-details-marker {
  display: none;
}
.faq-question::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  background-color: var(--faq-red-dot);
  border-radius: 50%;
  flex-shrink: 0;
  margin-right: 0.25rem;
}
.faq-question::after {
  content: "+";
  margin-left: auto;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--faq-dark-blue);
  opacity: 0.5;
  transition: transform var(--faq-transition), opacity var(--faq-transition);
  line-height: 1;
}
.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
  opacity: 0.9;
}
.faq-question:hover {
  background-color: rgba(212, 175, 55, 0.08);
}
.faq-question:focus-visible {
  outline: 2px solid var(--faq-gold-grad);
  outline-offset: -2px;
}
.faq-answer {
  padding: 0 1.25rem 1.25rem 2.25rem;
  font-size: 0.95rem;
  color: var(--faq-deep-brown);
  line-height: 1.65;
}
.faq-answer p {
  margin: 0 0 0.5rem;
}
.faq-answer p:last-child {
  margin-bottom: 0;
}
.faq-answer a {
  color: var(--faq-dark-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--faq-gold-grad);
  font-weight: 600;
}
.faq-answer a:hover {
  text-decoration-color: var(--faq-red-dot);
}

/* ── 教程步骤 ── */
.tutorial-steps {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  counter-reset: step-counter;
}
.tutorial-step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background-color: var(--faq-cream-bg);
  border-radius: var(--faq-radius);
  border: 1px solid rgba(10, 42, 74, 0.08);
}
.tutorial-step-num {
  flex-shrink: 0;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--faq-red-dot);
  line-height: 1;
  min-width: 2.2rem;
  letter-spacing: -0.02em;
}
.tutorial-step-text {
  font-size: 0.95rem;
  color: var(--faq-deep-brown);
  line-height: 1.5;
  padding-top: 0.15rem;
}

/* ── 教程图片 ── */
.tutorial-figure,
.compare-figure {
  margin: 1.25rem 0 0;
  padding: 0;
}
.img-container {
  display: block;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid rgba(10, 42, 74, 0.1);
  background-color: var(--faq-cream-bg);
  transition: box-shadow var(--faq-transition);
  cursor: zoom-in;
}
.img-container img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 700 / 500;
}
.img-container:hover {
  box-shadow: 0 4px 20px rgba(10, 42, 74, 0.15);
}
.tutorial-caption,
.compare-caption {
  font-size: 0.825rem;
  color: var(--faq-deep-brown);
  opacity: 0.65;
  margin-top: 0.5rem;
  text-align: center;
  letter-spacing: 0.01em;
}

/* ── 版本对比区 ── */
.compare-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.compare-text {
  font-size: 0.95rem;
  color: var(--faq-deep-brown);
  line-height: 1.65;
  margin: 0;
  max-width: 48em;
}

/* ── 联系技术支持 ── */
.faq-section-support {
  background-color: var(--faq-dark-blue);
  border-radius: var(--faq-radius);
  padding: 1.5rem;
  margin-top: 1rem;
}
.support-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.support-intro {
  font-size: 1rem;
  color: var(--faq-white);
  opacity: 0.9;
  margin: 0;
  line-height: 1.6;
}
.support-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.support-list-item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.6rem 0.8rem;
  background-color: rgba(255, 255, 255, 0.06);
  border-radius: var(--faq-radius);
}
.support-label {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--faq-gold-grad);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  min-width: 5em;
}
.support-value {
  font-size: 0.925rem;
  color: var(--faq-white);
  word-break: break-all;
}
.support-value a {
  color: var(--faq-gold-grad);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--faq-transition);
}
.support-value a:hover {
  border-bottom-color: var(--faq-gold-grad);
}
.support-btn {
  align-self: flex-start;
  margin-top: 0.25rem;
}
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--faq-white);
  background-color: var(--faq-red-dot);
  border: none;
  border-radius: var(--faq-radius);
  text-decoration: none;
  transition: background-color var(--faq-transition), transform var(--faq-transition);
  cursor: pointer;
  line-height: 1.4;
}
.btn-accent:hover,
.btn-accent:focus-visible {
  background-color: #c62e3a;
  transform: translateY(-1px);
}

/* ── 桌面端（≥768px） ── */
@media (min-width: 768px) {
  .page-faq {
    padding: 3rem 2rem 5rem;
  }
  .faq-hero-title {
    font-size: 3.2rem;
  }
  .faq-hero-desc {
    font-size: 1.25rem;
  }
  .faq-section-title {
    font-size: 1.75rem;
    gap: 0.75rem;
  }
  .faq-question {
    font-size: 1.05rem;
    padding: 1.25rem 1.5rem;
  }
  .faq-answer {
    padding-left: 2.75rem;
    padding-right: 1.5rem;
    padding-bottom: 1.5rem;
    font-size: 1rem;
  }
  .tutorial-steps {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
  }
  .tutorial-step {
    flex: 1 1 200px;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.25rem;
  }
  .tutorial-step-num {
    font-size: 2rem;
  }
  .tutorial-step-text {
    font-size: 0.95rem;
  }
  .tutorial-figure {
    max-width: 70%;
    margin-left: auto;
    margin-right: auto;
  }
  .compare-content {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }
  .compare-text {
    flex: 1;
    font-size: 1rem;
  }
  .compare-figure {
    flex: 1.2;
    max-width: 60%;
  }
  .faq-section-support {
    padding: 2rem 2.5rem;
  }
  .support-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
  }
  .support-list-item {
    flex: 1 1 240px;
  }
}

/* ── 大桌面（≥1024px） ── */
@media (min-width: 1024px) {
  .page-faq {
    padding: 3.5rem 3rem 6rem;
  }
  .faq-hero-title {
    font-size: 3.8rem;
  }
  .faq-list {
    max-width: 80%;
  }
  .tutorial-steps {
    max-width: 85%;
  }
  .faq-section-support {
    max-width: 75%;
  }
}

/* ── 极小屏安全（<480px） ── */
@media (max-width: 479px) {
  .page-faq {
    padding: 1.5rem 0.75rem 3rem;
  }
  .faq-hero-title {
    font-size: 1.8rem;
  }
  .faq-hero-desc {
    font-size: 0.95rem;
  }
  .faq-section-title {
    font-size: 1.2rem;
  }
  .faq-question {
    font-size: 0.9rem;
    padding: 0.85rem 1rem;
  }
  .faq-answer {
    padding: 0 0.75rem 1rem 1.75rem;
    font-size: 0.875rem;
  }
  .tutorial-step {
    padding: 0.75rem 1rem;
  }
  .tutorial-step-num {
    font-size: 1.2rem;
    min-width: 1.6rem;
  }
  .faq-section-support {
    padding: 1rem;
  }
  .support-label {
    min-width: 4em;
    font-size: 0.75rem;
  }
  .support-value {
    font-size: 0.85rem;
  }
  .btn-accent {
    padding: 0.5rem 1.2rem;
    font-size: 0.825rem;
  }
}