.page-faq {
  --faq-sidebar-w: 260px;
  --faq-deep-border: #1B2C4E;

  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- Hero 区域 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(2rem, 5vw, 4rem) 0 2.5rem;
  border-bottom: 1px solid var(--silver);
  background:
    linear-gradient(120deg, rgba(10, 31, 68, 0.05) 0%, rgba(0, 230, 138, 0.04) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: linear-gradient(
    180deg,
    var(--volt) 0%,
    var(--volt) 40%,
    var(--silver) 40%,
    var(--silver) 100%
  );
}

.page-faq .breadcrumb {
  margin-bottom: 2rem;
}

.page-faq .breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}

.page-faq .breadcrumb a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-hero-main .section-kicker {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  background: var(--volt);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}

.page-faq .faq-hero-main .page-title {
  font-size: clamp(1.55rem, 3.2vw, 2.5rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
  max-width: 21em;
  margin-bottom: 1rem;
  text-wrap: balance;
}

.page-faq .faq-hero-main .lead {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 44rem;
  margin-bottom: 0;
}

.page-faq .faq-hero-status {
  align-self: stretch;
  background: var(--blue);
  border-left: 4px solid var(--volt);
  padding: 1.25rem 1.25rem;
  display: grid;
  gap: 0.6rem;
  align-content: center;
}

.page-faq .faq-status-title {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver);
  padding-bottom: 0.35rem;
  border-bottom: 1px solid rgba(184, 196, 204, 0.25);
  margin-bottom: 0.2rem;
}

.page-faq .faq-status-line {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: #E8DFD0;
}

.page-faq .faq-status-line .ticker-dot {
  width: 7px;
  height: 7px;
  background: var(--volt);
  flex: 0 0 auto;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 2.5rem;
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 左侧目录 ---------- */
.page-faq .faq-toc {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-self: start;
  min-width: 0;
}

.page-faq .faq-toc-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-toc-list li {
  border-bottom: 1px solid var(--silver);
}

.page-faq .faq-toc-link {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.9rem 0.25rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  transition: color 0.2s, padding-left 0.2s;
}

.page-faq .faq-toc-link:hover {
  color: var(--blue);
  padding-left: 0.5rem;
}

.page-faq .faq-toc-link:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 2px;
}

.page-faq .faq-toc-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--volt);
  letter-spacing: 0.02em;
}

.page-faq .faq-toc-extra {
  display: grid;
  gap: 0.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--silver);
}

.page-faq .faq-toc-extra-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.page-faq .faq-toc-extra .btn {
  justify-content: flex-start;
  padding: 0.6rem 0.9rem;
  font-size: 0.8125rem;
}

/* ---------- FAQ 主区 ---------- */
.page-faq .faq-main {
  min-width: 0;
  display: grid;
  gap: clamp(3rem, 6vw, 5rem);
}

.page-faq .faq-chapter {
  scroll-margin-top: 2rem;
  min-width: 0;
}

.page-faq .faq-chapter-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--silver);
  margin-bottom: 1.5rem;
}

.page-faq .faq-chapter-num {
  font-family: var(--font-mono);
  font-size: clamp(1.875rem, 4vw, 2.625rem);
  line-height: 0.9;
  font-weight: 700;
  color: var(--volt);
  text-shadow: 2px 2px 0 rgba(10, 31, 68, 0.12);
  flex: 0 0 auto;
}

.page-faq .faq-chapter-heading {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-chapter-title {
  font-size: 1.375rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 0.35rem;
}

.page-faq .faq-chapter-desc {
  margin: 0;
  font-size: 0.875rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

.page-faq .faq-chapter-body {
  display: grid;
  gap: 0.5rem;
  min-width: 0;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--silver);
  transition: background 0.25s ease;
}

.page-faq .faq-item:first-child {
  border-top: 1px solid var(--silver);
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(0, 230, 138, 0.05) 0%, rgba(255, 255, 255, 0) 68%);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.2rem 0.25rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: -2px;
  background: rgba(0, 230, 138, 0.06);
}

.page-faq .faq-q-mark {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--crimson);
  line-height: 1.5;
  flex: 0 0 1.1rem;
}

.page-faq .faq-q-text {
  flex: 1;
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.55;
  padding-right: 0.75rem;
}

.page-faq .faq-q::after {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1;
  color: var(--volt);
  margin-top: 0.15rem;
  transition: transform 0.2s ease;
}

.page-faq .faq-item[open] .faq-q::after {
  content: "\2212";
}

.page-faq .faq-a {
  padding: 0 0.25rem 1.4rem 2rem;
  max-width: 48rem;
}

.page-faq .faq-a p {
  margin: 0 0 0.85rem;
  line-height: 1.8;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a .faq-num,
.page-faq .faq-steps .faq-num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* 步骤列表 */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqStep;
  display: grid;
  gap: 0.65rem;
}

.page-faq .faq-steps li {
  counter-increment: faqStep;
  display: flex;
  gap: 0.75rem;
  line-height: 1.75;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  padding: 0.6rem 0.75rem;
  background: rgba(244, 239, 230, 0.8);
  border-left: 2px solid var(--silver);
}

.page-faq .faq-steps li::before {
  content: counter(faqStep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--volt);
  margin-top: 0.25rem;
}

/* 图片容器 */
.page-faq .faq-figure {
  position: relative;
  margin: 1.75rem 0 0.5rem;
  background: var(--paper-deep);
  border: 1px solid var(--silver);
  padding: 0.75rem;
}

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

.page-faq .faq-figure-tag {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  background: var(--blue);
  color: var(--volt);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1;
  padding: 0.4rem 0.65rem;
  border-left: 2px solid var(--volt);
}

.page-faq .faq-figure-caption {
  margin: 0.8rem 0.25rem 0.25rem;
  font-size: 0.8125rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* ---------- 深蓝数据面板 ---------- */
.page-faq .faq-data-board {
  margin-top: 1.75rem;
  background: var(--blue);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
}

.page-faq .faq-board-head {
  grid-column: 1 / -1;
  background: var(--volt);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1;
  text-transform: uppercase;
  margin: 0;
  padding: 0.5rem 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-faq .faq-board-head::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--ink);
}

.page-faq .faq-board-stat {
  background: var(--blue);
  padding: 1.15rem 0.75rem;
  text-align: center;
}

.page-faq .faq-board-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1;
  color: var(--volt);
}

.page-faq .faq-board-label {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--silver);
  margin-top: 0.5rem;
}

/* ---------- 底部引导 ---------- */
.page-faq .faq-more {
  background: var(--paper-deep);
  border-left: 4px solid var(--volt);
  padding: 1.75rem 1.5rem;
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-more p {
  margin: 0;
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .faq-more-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 响应式：较大屏 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1fr 260px;
    gap: 3rem;
  }

  .page-faq .faq-data-board {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-sidebar-w) minmax(0, 1fr);
    gap: clamp(3rem, 6vw, 5.5rem);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 2rem;
  }

  .page-faq .faq-chapter-head {
    gap: 1.5rem;
  }

  .page-faq .faq-chapter-num {
    font-size: 2.75rem;
  }

  .page-faq .faq-chapter-title {
    font-size: 1.625rem;
  }
}