.page-faq {
  --faq-card: #FFFFFF;
  --faq-muted: #60708B;
  --faq-soft-line: #D7DEE9;
  position: relative;
  background: var(--primary);
  color: var(--text-main);
}

/* ===== 顶部横幅 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 36px 0 0;
  background:
    linear-gradient(135deg, rgba(57, 255, 20, 0.08) 0%, transparent 48%),
    radial-gradient(circle at 85% 15%, rgba(22, 51, 107, 0.9) 0%, transparent 55%),
    var(--primary);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(-35deg, transparent 0 18px, rgba(255, 255, 255, 0.025) 18px 20px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-green) 0%, transparent 75%);
}

.page-faq .faq-hero__container {
  position: relative;
}

.page-faq .faq-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.page-faq .faq-crumbs a {
  color: var(--text-main);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover {
  color: var(--accent-green);
}

.page-faq .faq-hero__grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 20px 0 40px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--accent-green);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: clamp(2.3rem, 8vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--text-main);
}

.page-faq .faq-hero__title-sub {
  display: block;
  margin-top: 8px;
  font-size: 0.55em;
  letter-spacing: 0.1em;
  color: var(--accent-green);
}

.page-faq .faq-hero__lead {
  max-width: 620px;
  margin: 0 0 20px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  background: var(--bg-light);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

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

.page-faq .faq-hero__figure figcaption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--primary);
  border-top: 3px solid var(--accent-green);
}

/* ===== 浅色 FAQ 主面板 ===== */
.page-faq .faq-board {
  padding: 48px 0 64px;
  background:
    repeating-linear-gradient(135deg, transparent 0 14px, rgba(10, 31, 68, 0.035) 14px 15px),
    var(--bg-light);
  color: var(--primary);
}

.page-faq .faq-board__kicker {
  margin: 0 0 24px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--primary);
  text-transform: uppercase;
}

.page-faq .faq-board__kicker::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 4px;
  margin-right: 10px;
  background: var(--accent-orange);
  vertical-align: middle;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

/* ===== 索引侧栏 ===== */
.page-faq .faq-index {
  position: relative;
  padding: 22px;
  background: var(--primary);
  color: var(--text-main);
  box-shadow: 10px 10px 0 rgba(10, 31, 68, 0.16);
}

.page-faq .faq-index::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 4px;
  background: var(--accent-green);
}

.page-faq .faq-index__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
  margin-bottom: 10px;
}

.page-faq .faq-index__head h2 {
  margin: 0;
  font-family: var(--font-headline);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-main);
}

.page-faq .faq-index__status {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent-green);
  border: 1px solid var(--line);
  padding: 4px 8px;
  white-space: nowrap;
}

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

.page-faq .faq-index__item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 2px;
  text-decoration: none;
  color: var(--text-main);
  border-bottom: 1px dashed var(--line);
  transition: color 0.2s, padding-left 0.2s;
  font-size: 0.92rem;
}

.page-faq .faq-index__item span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-green);
  width: 24px;
  flex: 0 0 auto;
}

.page-faq .faq-index__item b {
  font-weight: 600;
}

.page-faq .faq-index__item a:hover {
  color: var(--accent-green);
  padding-left: 6px;
}

.page-faq .faq-index__item a:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ===== 问题分组 ===== */
.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.page-faq .faq-group {
  padding: 28px 20px 20px;
  background: var(--faq-card);
  border: 1px solid var(--faq-soft-line);
  box-shadow: 0 10px 24px rgba(10, 31, 68, 0.06);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--primary);
}

.page-faq .faq-group__num {
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 3rem;
  line-height: 0.9;
  color: var(--primary);
  flex: 0 0 auto;
}

.page-faq .faq-group__title-wrap {
  flex: 1;
  min-width: 200px;
}

.page-faq .faq-group__title-wrap h2 {
  margin: 4px 0 6px;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  border-left: 4px solid var(--accent-orange);
  padding-left: 10px;
  line-height: 1.3;
}

.page-faq .faq-group__desc {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--faq-muted);
}

/* ===== 手风琴条目 ===== */
.page-faq .faq-item {
  margin-bottom: 14px;
  background: #F7F9FC;
  border-left: 4px solid var(--faq-soft-line);
  transition: border-color 0.25s, box-shadow 0.3s var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--accent-green);
  box-shadow: 8px 8px 0 rgba(10, 31, 68, 0.1);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 16px 16px 18px;
  margin: 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:focus-visible {
  outline: 3px solid var(--accent-green);
  outline-offset: -3px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-green);
  width: 24px;
  flex: 0 0 auto;
}

.page-faq .faq-item__q {
  flex: 1;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--primary);
}

.page-faq .faq-item__mark {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  position: relative;
  border: 1px solid var(--line);
  transition: transform 0.35s var(--ease), border-color 0.25s, background-color 0.25s, color 0.25s;
  color: var(--primary);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 2px;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(45deg);
  border-color: var(--accent-green);
  background: var(--accent-green);
  color: var(--primary-dark);
}

.page-faq .faq-item__body {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.45s var(--ease), opacity 0.4s ease;
}

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

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

.page-faq .faq-item[open] .faq-item__inner {
  padding: 2px 18px 20px;
}

.page-faq .faq-item__inner p {
  margin: 0 0 10px;
  font-size: 0.92rem;
  line-height: 1.75;
  color: #334155;
}

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

.page-faq .faq-item__inner a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: var(--accent-green);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.page-faq .faq-item__inner a:hover {
  color: var(--primary-dark);
}

/* ===== 数据更新时间轴图 ===== */
.page-faq .faq-timeline-figure {
  margin: 20px 0 0;
  background: var(--primary);
  border-left: 4px solid var(--accent-orange);
  padding: 8px;
}

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

.page-faq .faq-timeline-figure figcaption {
  padding: 10px 12px 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  background: var(--primary);
}

/* ===== 底部联系提示 ===== */
.page-faq .faq-callout {
  padding: 48px 0 72px;
  background:
    radial-gradient(circle at 20% 120%, rgba(255, 106, 0, 0.12) 0%, transparent 50%),
    var(--primary);
}

.page-faq .faq-callout__card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 28px 24px;
  background: var(--primary-light);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-faq .faq-callout__copy h2 {
  margin: 0 0 8px;
  font-family: var(--font-headline);
  font-size: 1.4rem;
  color: var(--text-main);
}

.page-faq .faq-callout__copy p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-faq .faq-callout__copy a {
  color: var(--text-main);
  text-decoration: underline;
  text-decoration-color: var(--accent-green);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ===== 响应式 ===== */
@media (min-width: 640px) {
  .page-faq .faq-timeline-figure {
    max-width: 560px;
  }

  .page-faq .faq-item__q {
    font-size: 1rem;
  }
}

@media (min-width: 700px) {
  .page-faq .faq-callout__card {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 32px 36px;
  }

  .page-faq .faq-callout__copy {
    max-width: 68%;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    padding: 64px 0 0;
  }

  .page-faq .faq-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 48px;
    padding: 28px 0 72px;
  }

  .page-faq .faq-hero__lead {
    font-size: 1.06rem;
  }

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

  .page-faq .faq-layout {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 32px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-group {
    padding: 34px 32px 26px;
  }

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