.page-faq {
  --faq-num-w: 2.6em;
  padding-bottom: 80px;
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: 22px;
}
.page-faq .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--step-1);
  color: var(--note);
}
.page-faq .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-faq .crumbs a {
  color: var(--turf-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--fast) var(--ease);
}
.page-faq .crumbs a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏拼贴 ---------- */
.page-faq .faq-hero {
  padding: 36px 0 44px;
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
}
.page-faq .faq-hero__main {
  max-width: 46ch;
}
.page-faq .faq-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.02em;
  color: var(--turf);
  margin: 0;
}
.page-faq h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 7.4vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink-blue);
}
.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  font-size: var(--step0);
  line-height: 1.75;
  color: var(--ink-blue);
  max-width: 64ch;
}
.page-faq .faq-hero__side {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
}
.page-faq .faq-chip {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 4px solid var(--cyan);
  min-width: 128px;
}
.page-faq .faq-chip:nth-child(2) { border-left-color: var(--whistle); }
.page-faq .faq-chip:nth-child(3) { border-left-color: var(--turf); }
.page-faq .faq-chip__num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-blue);
}
.page-faq .faq-chip__label {
  font-size: var(--step-1);
  color: var(--note);
  line-height: 1.5;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 12px;
  padding-top: 8px;
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  padding: 14px 0 6px;
  border-top: 1px solid var(--line);
}
.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--note);
}
.page-faq .faq-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  white-space: nowrap;
  font-size: var(--step-1);
  color: var(--turf-deep);
  text-decoration: none;
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: background var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: rgba(18, 138, 75, 0.07);
  border-left-color: var(--cyan);
}
.page-faq .faq-index__list .num {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  color: var(--turf);
}

/* ---------- 章节 ---------- */
.page-faq .faq-body {
  min-width: 0;
}
.page-faq .faq-group {
  padding: 10px 0 6px;
  scroll-margin-top: 24px;
}
.page-faq .faq-body > .faq-group + .faq-group {
  margin-top: 44px;
  border-top: 1px solid var(--line);
  padding-top: 0;
}
.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 30px 0 16px;
}
.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  font-weight: 600;
  padding: 2px 9px;
  border: 1px solid var(--turf);
  border-radius: 999px;
  color: var(--turf);
  transition: background var(--base) var(--ease), color var(--base) var(--ease), border-color var(--base) var(--ease);
}
.page-faq .faq-group:target .faq-group__num {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-blue);
}
.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 3.6vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink-blue);
}
.page-faq .faq-group__grid {
  display: grid;
  gap: 26px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-item:first-child {
  border-top: 1px solid var(--line);
}
.page-faq .faq-q {
  display: grid;
  grid-template-columns: var(--faq-num-w) minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  width: 100%;
  padding: 19px 2px;
  margin: 0;
  background: none;
  border: 0;
  font: inherit;
  font-family: var(--font-body);
  font-size: var(--step1);
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--ink-blue);
  cursor: pointer;
  transition: color var(--fast) var(--ease);
}
.page-faq .faq-q:hover .faq-q__text {
  color: var(--turf);
}
.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.page-faq .faq-q__num {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  font-weight: 500;
  color: var(--note);
  text-align: right;
  letter-spacing: 0.04em;
}
.page-faq .faq-q__text {
  min-width: 0;
  overflow-wrap: anywhere;
}
.page-faq .faq-q__icon {
  position: relative;
  align-self: center;
  width: 16px;
  height: 16px;
  flex: none;
  color: var(--turf);
}
.page-faq .faq-q__icon::before,
.page-faq .faq-q__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform var(--base) var(--ease), opacity var(--base) var(--ease);
}
.page-faq .faq-q__icon::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}
.page-faq .faq-q__icon::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}
.page-faq .faq-q[aria-expanded="true"] .faq-q__icon::after {
  transform: scaleY(0);
  opacity: 0;
}
.page-faq .faq-q[aria-expanded="true"] .faq-q__icon::before {
  transform: rotate(180deg);
}

/* ---------- 答案面板 ---------- */
.page-faq .faq-a[hidden] {
  display: none;
}
.page-faq .faq-a {
  padding: 0 0 24px 0;
}
.page-faq .faq-a__inner {
  margin-left: var(--faq-num-w);
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--cyan);
  animation: faq-in var(--base) var(--ease) both;
}
.page-faq .faq-a__inner p {
  margin: 0;
  font-size: var(--step0);
  line-height: 1.78;
  color: var(--ink-blue);
  max-width: 62ch;
  overflow-wrap: anywhere;
}
.page-faq .faq-a__inner a {
  color: var(--turf-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease);
}
.page-faq .faq-a__inner a:hover {
  background: var(--cyan);
  color: var(--ink-blue);
}
@keyframes faq-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 8px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--ink-blue);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-faq .faq-figure__cap {
  padding: 12px 14px 14px;
  font-size: var(--step-1);
  line-height: 1.6;
  color: var(--chalk);
  background: var(--ink-blue);
}
.page-faq .faq-figure__cap {
  color: rgba(247, 250, 248, 0.82);
}

/* ---------- 底部入口 ---------- */
.page-faq .faq-foot {
  margin-top: 52px;
  padding: 28px 24px 30px;
  border-radius: var(--radius);
  background: var(--ink-blue);
  color: var(--chalk);
}
.page-faq .faq-foot__lead {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step1);
  line-height: 1.5;
  color: var(--chalk);
}
.page-faq .faq-foot__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-faq .faq-foot .btn--ghost {
  color: var(--chalk);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 52px 0 56px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(200px, 0.85fr);
    align-items: end;
    gap: 44px;
  }
  .page-faq .faq-hero__side {
    flex-direction: column;
    gap: 22px;
    padding-bottom: 6px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 212px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 22px;
    border-top: 0;
    padding-top: 34px;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__list a {
    white-space: normal;
  }
  .page-faq .faq-group {
    scroll-margin-top: 96px;
  }
  .page-faq .faq-body > .faq-group + .faq-group {
    margin-top: 60px;
  }
  .page-faq .faq-group--media .faq-group__grid {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
    gap: 44px;
    align-items: start;
  }
  .page-faq .faq-group--media .faq-figure {
    position: sticky;
    top: 96px;
    margin-top: 4px;
  }
  .page-faq .faq-foot {
    margin-top: 64px;
    padding: 36px 40px 38px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-body {
    max-width: 880px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a__inner {
    animation: none;
  }
  .page-faq .faq-q__icon::before,
  .page-faq .faq-q__icon::after,
  .page-faq .faq-q,
  .page-faq .faq-index__list a {
    transition: none;
  }
}