/* ===== FAQ 页面专属 CSS ===== */
.page-faq {
  --faq-gold-soft: rgba(201, 162, 39, 0.55);
  --faq-grid-line: rgba(201, 162, 39, 0.08);
  background:
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px),
    var(--cream);
  background-size: 28px 28px, 28px 28px, auto;
  scroll-behavior: smooth;
}

/* 面包屑在深蓝背景下的颜色 */
.page-faq .breadcrumb {
  margin-bottom: 0;
}
.page-faq .breadcrumb-link {
  color: rgba(244, 241, 232, 0.78);
  transition: color var(--transition-fast);
}
.page-faq .breadcrumb-link:hover {
  color: var(--gold);
}
.page-faq .breadcrumb-item[aria-current="page"] {
  color: var(--gold);
}

/* ===== Hero 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 20%, rgba(201, 162, 39, 0.22) 0, transparent 42%),
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px),
    var(--deep-blue);
  background-size: auto, 32px 32px, 32px 32px, auto;
  padding: calc(var(--header-height) + 48px) 0 52px;
  border-bottom: var(--border-thick) solid var(--gold);
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero-content {
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 18px 0 14px;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1.06;
  color: var(--white);
  letter-spacing: -0.02em;
  max-width: 12em;
}

.page-faq .faq-hero-lead {
  margin: 0;
  max-width: 46em;
  color: rgba(244, 241, 232, 0.88);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.85;
}

.page-faq .faq-hero-side {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.page-faq .faq-hero-stat {
  padding: 16px 16px 14px;
  border: var(--border-med) solid var(--faq-gold-soft);
  background: rgba(11, 37, 69, 0.72);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-hero-stat-label {
  display: block;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--cream-dark);
}

.page-faq .faq-hero-stat-value {
  display: block;
  margin-top: 6px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 2.3rem;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-hero-stat-note {
  display: block;
  margin-top: 8px;
  color: rgba(244, 241, 232, 0.72);
  font-size: 0.84rem;
  font-family: var(--font-body);
}

.page-faq .faq-hero-vertical {
  position: absolute;
  right: 0;
  bottom: -16px;
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  writing-mode: vertical-rl;
}

/* ===== 主体 ===== */
.page-faq .faq-body {
  padding: 44px 0 64px;
}

.page-faq .faq-grid {
  display: grid;
  gap: 44px;
}

/* ===== 分类区块 ===== */
.page-faq .faq-block {
  margin-bottom: 64px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}
.page-faq .faq-block:last-child {
  margin-bottom: 0;
}

.page-faq .faq-block-header {
  margin-bottom: 22px;
  padding-top: 16px;
  border-top: var(--border-thick) solid var(--deep-blue);
}

.page-faq .faq-section-num {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-faq .faq-section-num::after {
  content: "";
  display: block;
  width: 44px;
  height: var(--border-med);
  background: currentColor;
}

.page-faq .faq-block-header h2 {
  margin: 8px 0 6px;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.1;
  color: var(--deep-blue);
}

.page-faq .faq-block-intro {
  margin: 0;
  color: var(--rock-gray);
  font-family: var(--font-body);
  font-size: 0.96rem;
  line-height: 1.7;
}

/* ===== 折叠面板 ===== */
.page-faq .faq-accordion {
  margin-top: 26px;
}

.page-faq .faq-item {
  border: var(--border-med) solid var(--ink);
  background: var(--cream);
  box-shadow: var(--shadow-hard);
  margin-bottom: 14px;
  transition: transform var(--transition-fast), border-left-color var(--transition-fast), background var(--transition-fast);
}

.page-faq .faq-item:hover {
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  background: var(--white);
  border-left: var(--border-thick) solid var(--gold);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px;
  cursor: pointer;
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--deep-blue);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-weight: 400;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--gold);
  transition: transform var(--transition-med);
}

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

.page-faq .faq-q-icon {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gold);
  color: var(--deep-blue);
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.05rem;
}

.page-faq .faq-q-title {
  flex: 1;
}

.page-faq .faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-med);
}

.page-faq .faq-item[open] .faq-answer {
  grid-template-rows: 1fr;
}

.page-faq .faq-answer-inner {
  overflow: hidden;
  min-height: 0;
  padding: 0 18px;
}

.page-faq .faq-answer-inner p {
  margin: 0;
  padding: 4px 0 18px;
  border-top: var(--border-thin) solid var(--cream-dark);
  color: var(--deep-blue);
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.85;
}

/* ===== 插图 ===== */
.page-faq .faq-figure {
  margin: 26px 0 6px;
  border: var(--border-med) solid var(--ink);
  background: var(--white);
  box-shadow: var(--shadow-hard);
  padding: 12px 12px 10px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-figure figcaption {
  padding: 12px 4px 4px;
  color: var(--rock-gray);
  font-family: var(--font-body);
  font-size: 0.84rem;
  line-height: 1.6;
}

.page-faq .faq-figure--narrow {
  max-width: 520px;
}

/* ===== 侧边栏 ===== */
.page-faq .faq-side-card,
.page-faq .faq-side-contact {
  background: var(--cream);
  border: var(--border-med) solid var(--ink);
  box-shadow: var(--shadow-hard);
  padding: 20px 20px 22px;
  margin-bottom: 20px;
}

.page-faq .faq-side-card h2,
.page-faq .faq-side-contact h2 {
  margin: 4px 0 14px;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.12rem;
  color: var(--deep-blue);
  border-bottom: var(--border-med) solid var(--gold);
  padding-bottom: 10px;
}

.page-faq .faq-anchor-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-anchor-item {
  border-bottom: var(--border-thin) solid var(--cream-dark);
}

.page-faq .faq-anchor-item:last-child {
  border-bottom: none;
}

.page-faq .faq-anchor-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 2px;
  color: var(--deep-blue);
  text-decoration: none;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.94rem;
  transition: margin-left var(--transition-fast), color var(--transition-fast);
}

.page-faq .faq-anchor-item a:hover {
  margin-left: 6px;
  color: var(--gold);
}

.page-faq .faq-anchor-num {
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-faq .faq-side-contact p {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--deep-blue);
}

.page-faq .faq-contact-line {
  display: block;
  font-family: var(--font-data);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--deep-blue);
  border-bottom: var(--border-thin) solid var(--cream-dark);
  padding: 8px 0;
}

.page-faq .faq-side-contact .btn {
  margin-top: 14px;
}

.page-faq .faq-side-apps {
  margin-bottom: 20px;
  padding: 20px;
  background: var(--deep-blue);
  border: var(--border-med) solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-side-apps h2 {
  margin: 0 0 12px;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 1.12rem;
  color: var(--gold);
  border-bottom: var(--border-med) solid rgba(201, 162, 39, 0.5);
  padding-bottom: 10px;
}

.page-faq .faq-side-apps ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-side-apps li {
  margin-bottom: 2px;
}

.page-faq .faq-side-apps a {
  display: block;
  padding: 10px 0;
  color: var(--cream);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 0.94rem;
  border-bottom: var(--border-thin) solid rgba(244, 241, 232, 0.14);
  transition: opacity var(--transition-fast), padding-left var(--transition-fast), color var(--transition-fast);
}

.page-faq .faq-side-apps a:hover {
  opacity: 0.88;
  padding-left: 6px;
  color: var(--gold-light);
}

.page-faq .faq-side-apps li:last-child a {
  border-bottom: none;
}

/* ===== 桌面端 ===== */
@media (min-width: 960px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-hero-side {
    grid-template-columns: 1fr;
    gap: 14px;
    border-left: var(--border-thick) solid var(--gold);
    padding-left: 22px;
  }

  .page-faq .faq-body {
    padding: 72px 0 96px;
  }

  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 64px;
    align-items: start;
  }

  .page-faq .content-main {
    min-width: 0;
  }

  .page-faq .content-side {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }
}

/* ===== 窄屏适配 ===== */
@media (max-width: 639px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-height) + 32px) 0 36px;
  }

  .page-faq .faq-hero-stat {
    padding: 12px;
  }

  .page-faq .faq-hero-stat-value {
    font-size: 1.8rem;
  }

  .page-faq .faq-item summary {
    padding: 14px 12px;
    gap: 10px;
    font-size: 0.95rem;
  }

  .page-faq .faq-q-icon {
    flex-basis: 28px;
    width: 28px;
    height: 28px;
    font-size: 0.95rem;
  }

  .page-faq .faq-answer-inner {
    padding: 0 12px;
  }

  .page-faq .faq-answer-inner p {
    font-size: 0.92rem;
  }

  .page-faq .faq-hero-vertical {
    display: none;
  }
}