.page-faq {
  background: var(--ink-950);
  color: var(--text-100);
  padding: 0 20px 88px;
  font-family: var(--font-body);
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: 20px;
}

.page-faq .faq-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-400);
}

.page-faq .faq-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-600);
}

.page-faq .faq-crumbs a {
  color: var(--text-400);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--signal-500);
}

.page-faq .faq-crumbs [aria-current="page"] {
  color: var(--paper-50);
}

/* ---------- 首屏声明 ---------- */
.page-faq .faq-hero {
  padding: 34px 0 42px;
  border-bottom: 1px solid var(--ink-600);
}

.page-faq .faq-kicker {
  display: inline-block;
  margin: 0 0 22px;
  padding: 5px 10px;
  border: 1px solid var(--flow-700);
  color: var(--flow-500);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-faq .faq-hero h1 {
  max-width: 22ch;
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper-50);
}

.page-faq .faq-lead {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-100);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  background: var(--ink-600);
  border: 1px solid var(--ink-600);
}

.page-faq .faq-stat {
  padding: 20px 18px 22px;
  background: var(--ink-800);
  border-top: 3px solid var(--ink-600);
}

.page-faq .faq-stat--signal {
  border-top-color: var(--signal-500);
}

.page-faq .faq-stat--flow {
  border-top-color: var(--flow-500);
}

.page-faq .faq-stat--ember {
  border-top-color: var(--ember-600);
}

.page-faq .faq-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--paper-50);
}

.page-faq .faq-stat--signal .faq-stat__value {
  color: var(--signal-500);
}

.page-faq .faq-stat--flow .faq-stat__value {
  color: var(--flow-500);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-400);
}

/* ---------- 主体：分组导航 + 问题区 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.page-faq .faq-index {
  align-self: start;
  padding: 18px;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--text-400);
}

.page-faq .faq-index__list {
  display: flex;
  flex-direction: row;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid var(--ink-600);
  color: var(--text-100);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--signal-500);
  background: rgba(255, 107, 44, 0.08);
  color: var(--paper-50);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-400);
}

.page-faq .faq-groups {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  --group-accent: var(--ink-600);
  margin: 0 0 60px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group:last-child {
  margin-bottom: 16px;
}

.page-faq .faq-group--flow {
  --group-accent: var(--flow-500);
}

.page-faq .faq-group--signal {
  --group-accent: var(--signal-500);
}

.page-faq .faq-group--ember {
  --group-accent: var(--ember-600);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: start;
  gap: 0 14px;
  margin-bottom: 24px;
  padding: 22px 0 0;
  border-top: 2px solid var(--group-accent);
}

.page-faq .faq-group__index {
  grid-row: 1 / span 2;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--group-accent);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--paper-50);
}

.page-faq .faq-group__lead {
  grid-column: 2;
  max-width: 66ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-400);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
  padding: 10px;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure--tall img {
  aspect-ratio: 4 / 3;
}

.page-faq .faq-figure figcaption {
  padding: 12px 4px 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--text-400);
}

/* ---------- 问答卡片 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
  border-left: 3px solid var(--ink-600);
  transition: border-color 0.22s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--group-accent);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--paper-50);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 19px;
  line-height: 1.2;
  color: var(--group-accent);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2013";
}

.page-faq .faq-item__q:hover {
  color: #ffffff;
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: -2px;
}

.page-faq .faq-item__body {
  padding: 16px;
  border-top: 1px solid var(--ink-600);
}

.page-faq .faq-item__body > :last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body p {
  max-width: 68ch;
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-100);
}

.page-faq .faq-item__body strong {
  color: var(--paper-50);
}

.page-faq .faq-item__body a {
  color: var(--signal-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--paper-50);
}

/* ---------- 列表：编号步骤与要点 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 9px;
  max-width: 68ch;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-100);
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  display: grid;
  place-items: center;
  width: 23px;
  height: 23px;
  border: 1px solid var(--group-accent);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--group-accent);
}

.page-faq .faq-points {
  display: grid;
  gap: 8px;
  max-width: 68ch;
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-points > li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-100);
}

.page-faq .faq-points > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 2px;
  background: var(--group-accent);
}

/* ---------- 加急档位切换 ---------- */
.page-faq .faq-shifts {
  --group-accent: var(--ink-600);
  margin-bottom: 18px;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
}

.page-faq .faq-shifts .tablist {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--ink-600);
}

.page-faq .faq-shifts .tab {
  flex: 1 1 130px;
  padding: 13px 14px;
  background: transparent;
  border: 0;
  border-right: 1px solid var(--ink-600);
  color: var(--text-400);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-shifts .tab:last-child {
  border-right: 0;
}

.page-faq .faq-shifts .tab:hover {
  color: var(--paper-50);
}

.page-faq .faq-shifts .tab[aria-selected="true"] {
  background: var(--ink-600);
  color: var(--paper-50);
}

.page-faq .faq-shifts .tab:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: -2px;
}

.page-faq .faq-shift {
  padding: 20px 18px;
  border-left: 3px solid var(--ink-600);
}

.page-faq .faq-shift--ember {
  --group-accent: var(--ember-600);
  border-left-color: var(--ember-600);
}

.page-faq .faq-shift--signal {
  --group-accent: var(--signal-500);
  border-left-color: var(--signal-500);
}

.page-faq .faq-shift--flow {
  --group-accent: var(--flow-500);
  border-left-color: var(--flow-500);
}

.page-faq .faq-shift:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: -2px;
}

.page-faq .faq-shift__range {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--paper-50);
}

.page-faq .faq-shift__meta {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--text-400);
}

.page-faq .faq-shift .faq-points > li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-shift .faq-points {
  margin-bottom: 0;
}

/* ---------- 联络卡片 ---------- */
.page-faq .faq-contact__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}

.page-faq .faq-contact-card {
  padding: 20px 18px;
  background: var(--ink-800);
  border: 1px solid var(--ink-600);
  border-top: 3px solid var(--flow-500);
}

.page-faq .faq-contact-card--signal {
  border-top-color: var(--signal-500);
}

.page-faq .faq-contact-card__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text-400);
}

.page-faq .faq-contact-card__value {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--paper-50);
  word-break: break-word;
}

.page-faq .faq-contact-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-400);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 收尾保障 ---------- */
.page-faq .faq-trust {
  margin-top: 36px;
  padding-top: 32px;
  border-top: 2px solid var(--ink-600);
}

.page-faq .faq-trust__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-trust__value {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  color: var(--flow-500);
}

.page-faq .faq-trust__label {
  display: block;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-400);
}

.page-faq .faq-trust__note {
  margin: 26px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-400);
}

.page-faq .faq-trust__note a {
  color: var(--signal-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-trust__note a:hover,
.page-faq .faq-trust__note a:focus-visible {
  color: var(--paper-50);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .faq-contact__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-faq .faq-trust__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (min-width: 960px) {
  .page-faq {
    padding: 0 40px 112px;
  }

  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 56px;
    margin-top: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-group {
    margin-bottom: 76px;
  }

  .page-faq .faq-item__q {
    padding: 17px 20px;
    font-size: 17px;
  }

  .page-faq .faq-item__body {
    padding: 18px 20px 20px;
  }

  .page-faq .faq-shift {
    padding: 24px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-index__link,
  .page-faq .faq-shifts .tab {
    transition: none;
  }
}