.page-faq,
.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq {
  --faq-gold-soft: rgba(245, 182, 47, 0.08);
  --faq-line-gold: rgba(245, 182, 47, 0.3);
  --faq-cyan-soft: rgba(0, 229, 255, 0.18);
  --faq-tilt: -1.5deg;
  position: relative;
  background-color: var(--color-bg-deep);
  background-image:
    radial-gradient(circle at 50% 50%, rgba(245, 182, 47, 0.05) 0 1px, transparent 1.4px),
    radial-gradient(circle at 50% 50%, transparent 0 9px, rgba(245, 182, 47, 0.035) 9.5px 11px, transparent 11.5px);
  background-size: 140px 140px, 140px 140px;
  color: var(--color-text);
}

/* ========== Hero ========== */
.page-faq__hero {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.25rem, 4vw, 2.5rem) clamp(1rem, 4vw, 2.5rem) clamp(2rem, 5vw, 3.5rem);
  border-bottom: 2px solid var(--faq-line-gold);
  background:
    radial-gradient(circle at 85% 8%, rgba(123, 47, 190, 0.2), transparent 36%),
    radial-gradient(circle at 8% 90%, rgba(245, 182, 47, 0.08), transparent 28%),
    linear-gradient(180deg, rgba(16, 16, 32, 0.6), rgba(10, 10, 15, 0.25));
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 2px solid rgba(245, 182, 47, 0.06);
  box-shadow: 0 0 0 36px rgba(245, 182, 47, 0.035), 0 0 0 72px rgba(245, 182, 47, 0.02);
  pointer-events: none;
  z-index: 0;
}

.page-faq__hero-body,
.page-faq__hero-figure {
  position: relative;
  z-index: 1;
}

.page-faq__hero-figure {
  margin: 0;
  order: 1;
}

.page-faq__hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--color-border-strong);
  box-shadow: var(--shadow-panel);
  transform: rotate(var(--faq-tilt));
}

.page-faq__hero-body {
  order: 2;
}

.page-faq .breadcrumb {
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.page-faq__title,
.page-faq__hero h1 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 4.5vw, 3.15rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
  background: linear-gradient(135deg, var(--color-gold-bright), var(--color-gold-dim));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.page-faq__description {
  max-width: 56ch;
  margin: 0;
  color: var(--color-text-dim);
  font-size: 0.98rem;
  line-height: 1.8;
}

/* ========== 布局主体 ========== */
.page-faq__layout {
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2rem) clamp(1rem, 4vw, 2.5rem) 3.5rem;
}

/* ========== 侧边索引 ========== */
.page-faq__index {
  padding: 1rem 0 1.25rem;
  margin-bottom: 0.5rem;
  border-bottom: 2px solid var(--faq-line-gold);
}

.page-faq__index-title {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-cyan);
}

.page-faq__index-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq__index-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--color-border);
  background: rgba(16, 16, 32, 0.6);
  font-family: var(--font-data);
  font-size: 0.82rem;
  color: var(--color-text-dim);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq__index-link::before {
  content: "§";
  color: var(--color-gold);
  font-size: 0.7rem;
}

.page-faq__index-link:hover,
.page-faq__index-link:focus-visible {
  border-color: var(--color-gold);
  color: var(--color-gold);
  box-shadow: 0 0 16px rgba(245, 182, 47, 0.12);
}

.page-faq__index-note {
  display: none;
  margin: 1rem 0 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.page-faq__index-note a {
  color: var(--color-cyan);
  text-underline-offset: 3px;
}

/* ========== 问答面板 ========== */
.page-faq__content {
  min-width: 0;
}

.faq-category {
  scroll-margin-top: calc(var(--header-height) + 1rem);
  margin-top: 2.75rem;
}

.page-faq__content .faq-category:first-of-type {
  margin-top: 1rem;
}

.faq-category__title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 1.1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-border);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-gold-bright), var(--color-gold-dim));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.faq-category__num {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--color-violet);
  background: none;
  -webkit-text-fill-color: currentColor;
  padding: 0.22rem 0.5rem;
  border: 1px solid rgba(123, 47, 190, 0.5);
  background-color: rgba(123, 47, 190, 0.1);
}

.faq-category__media {
  margin: 0 0 0.9rem;
  border: 2px solid var(--faq-cyan-soft);
  box-shadow: var(--shadow-panel);
}

.faq-category__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ========== 折叠条目 ========== */
.faq-item {
  display: block;
  margin: 0 0 0.9rem;
  border: 2px solid var(--color-border);
  background: var(--color-bg-card);
  box-shadow: var(--shadow-panel);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 1.2rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-gold);
  transition: transform 0.25s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

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

.faq-item > p {
  margin: 0;
  padding: 0.9rem 1.2rem 1.2rem;
  border-top: 1px dashed rgba(245, 182, 47, 0.18);
  color: var(--color-text-dim);
  line-height: 1.8;
  font-size: 0.95rem;
}

.faq-item > p a {
  color: var(--color-cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ========== 联系客服 ========== */
.faq-contact {
  margin-top: 3rem;
  padding: clamp(1.4rem, 4vw, 2rem);
  border: 2px solid var(--color-border-strong);
  background:
    radial-gradient(circle at 12% 0%, rgba(245, 182, 47, 0.16), transparent 34%),
    linear-gradient(135deg, rgba(123, 47, 190, 0.12), transparent 55%),
    var(--color-bg-panel);
  box-shadow: var(--shadow-panel);
}

.faq-contact__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  font-weight: 900;
  color: var(--color-text);
}

.faq-contact__lead {
  max-width: 58ch;
  margin: 0 0 1.4rem;
  color: var(--color-text-dim);
  line-height: 1.8;
}

.faq-contact__grid {
  display: grid;
  gap: 1rem;
}

.faq-contact__label {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.faq-contact__value {
  font-family: var(--font-data);
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--color-cyan);
  overflow-wrap: anywhere;
}

.faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-faq__to-top {
  margin-left: auto;
}

/* ========== 桌面端布局 ========== */
@media (min-width: 700px) {
  .faq-contact__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq__hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 2rem;
    padding-top: clamp(2rem, 5vw, 3.25rem);
  }

  .page-faq__hero-body {
    order: 1;
  }

  .page-faq__hero-figure {
    order: 2;
  }
}

@media (min-width: 900px) {
  .page-faq__layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }

  .page-faq__index {
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
    align-self: start;
    padding: 0;
    margin: 0.25rem 0 0;
    border-bottom: 0;
  }

  .page-faq__index-nav {
    flex-direction: column;
    gap: 0.4rem;
  }

  .page-faq__index-link {
    padding: 0.52rem 0.75rem;
    font-size: 0.85rem;
  }

  .page-faq__index-note {
    display: block;
  }
}