.page-faq {
  --faq-rail: 264px;
  --faq-gutter: 8px;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */

.page-faq .breadcrumbs {
  margin-top: 18px;
}

.page-faq .faq-hero {
  display: grid;
  gap: 30px;
  padding: 26px 0 46px;
}

.page-faq .faq-hero__copy h1 {
  margin: 14px 0 0;
  font-size: clamp(29px, 5.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--blue-900);
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--gray-500);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__panel {
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange-600);
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 22px 20px;
}

.page-faq .faq-hero__panel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-600);
}

.page-faq .faq-hero__panel-title {
  margin: 10px 0 0;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--blue-900);
}

.page-faq .faq-hero__panel-text {
  margin: 10px 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray-500);
}

.page-faq .faq-hero__panel .btn + .btn {
  margin-top: 10px;
}

/* ---------- 自助判断 ---------- */

.page-faq .faq-router {
  padding-bottom: 4px;
}

.page-faq .faq-router__grid {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .faq-router__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 52px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.page-faq .faq-router__card:hover,
.page-faq .faq-router__card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--orange-400);
  box-shadow: var(--shadow-md);
}

.page-faq .faq-router__q {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--orange-600);
}

.page-faq .faq-router__title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--blue-900);
}

.page-faq .faq-router__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--gray-500);
}

.page-faq .faq-router__go {
  position: absolute;
  left: 18px;
  bottom: 18px;
  font-size: 13px;
  font-weight: 700;
  color: var(--blue-500);
}

.page-faq .faq-router__card:hover .faq-router__go,
.page-faq .faq-router__card:focus-visible .faq-router__go {
  color: var(--orange-600);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 30px 0 0;
}

.page-faq .faq-figure__frame {
  aspect-ratio: 12 / 7;
  overflow: hidden;
}

.page-faq .faq-figure__frame--wide {
  aspect-ratio: 2 / 1;
}

.page-faq .faq-figure__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--gray-500);
}

.page-faq .faq-figure--inline {
  margin: 18px 0 20px;
  padding-left: 0;
}

/* ---------- 分栏骨架 ---------- */

.page-faq .faq-library {
  padding-top: 8px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 30px;
}

/* ---------- 左侧目录 ---------- */

.page-faq .faq-toc {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 18px;
}

.page-faq .faq-toc__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 2px 16px;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--blue-700);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--orange-600);
  border-bottom-color: var(--orange-400);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gray-500);
}

.page-faq .faq-toc__callout {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc__callout-text {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--blue-900);
}

.page-faq .faq-toc__callout-hint {
  margin: 6px 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-500);
}

/* ---------- 问题组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: 46px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 14px;
  padding-left: 16px;
  margin-bottom: 18px;
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 5px;
  width: 2px;
  background: var(--blue-200);
  transition: background 220ms ease;
}

.page-faq .faq-group__head.is-current::before {
  background: var(--orange-600);
}

.page-faq .faq-group__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange-600);
  padding-top: 7px;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(21px, 3vw, 29px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--blue-700);
  transition: color 220ms ease;
}

.page-faq .faq-group__head.is-current h2 {
  color: var(--blue-900);
}

.page-faq .faq-group__head p {
  grid-column: 2;
  margin: 6px 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray-500);
}

/* ---------- 折叠问答 ---------- */

.page-faq .qa {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.page-faq .qa + .qa {
  margin-top: 10px;
}

.page-faq .qa[open] {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md), inset 3px 0 0 0 var(--orange-400);
}

.page-faq .qa__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__head::marker {
  content: "";
}

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

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  transition: color 160ms ease;
}

.page-faq .qa[open] .qa__num {
  color: var(--orange-600);
}

.page-faq .qa__title {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--blue-900);
}

.page-faq .qa__toggle {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__toggle::before,
.page-faq .qa__toggle::after {
  content: "";
  position: absolute;
  background: var(--blue-500);
  transition: transform 180ms ease, background 180ms ease;
}

.page-faq .qa__toggle::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa__toggle::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .qa[open] .qa__toggle::after {
  transform: scaleY(0);
}

.page-faq .qa[open] .qa__toggle::before {
  background: var(--orange-600);
}

.page-faq .qa__body {
  padding: 2px 18px 20px;
}

.page-faq .qa__lead {
  margin: 0 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .qa__lead + .qa__lead {
  margin-top: 12px;
}

.page-faq .qa__lead b {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--orange-600);
  background: rgba(210, 96, 10, 0.08);
  border-radius: var(--radius);
  padding: 1px 5px;
  white-space: nowrap;
}

.page-faq .qa__steps {
  counter-reset: qa-step;
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .qa__steps li {
  counter-increment: qa-step;
  position: relative;
  padding-left: 30px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray-500);
}

.page-faq .qa__steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 20px;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--blue-700);
}

.page-faq .qa__steps li b {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--blue-700);
}

/* ---------- 人工协助 ---------- */

.page-faq .faq-assist__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-assist__item {
  position: relative;
  padding: 13px 16px 13px 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .faq-assist__dot {
  position: absolute;
  left: 16px;
  top: 20px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange-400);
}

.page-faq .faq-channels {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .faq-channels__item {
  background: var(--gray-100);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 16px 18px;
}

.page-faq .faq-channels__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.page-faq .faq-channels__value {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--blue-900);
}

.page-faq .faq-channels__value--mono {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  word-break: break-all;
}

.page-faq .faq-channels__hint {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-500);
}

.page-faq .faq-channels__item .btn {
  margin-top: 12px;
}

.page-faq .faq-assist__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--blue-200);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--gray-500);
}

/* ---------- 尾部行动区 ---------- */

.page-faq .faq-cta {
  padding-bottom: 72px;
}

.page-faq .faq-cta__box {
  display: grid;
  gap: 22px;
  padding: 26px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue-700);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-cta__text h2 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--blue-900);
}

.page-faq .faq-cta__text p {
  margin: 10px 0 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--gray-500);
}

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

.page-faq .faq-cta__meta {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-500);
}

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

.page-faq .faq-cta__meta a:hover {
  color: var(--orange-600);
}

/* ---------- 中等屏幕 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-router__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .qa__head {
    padding: 18px 22px;
  }

  .page-faq .qa__body {
    padding: 2px 22px 22px 52px;
  }

  .page-faq .faq-figure--inline {
    padding-left: 52px;
  }

  .page-faq .faq-cta__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 30px 28px;
  }

  .page-faq .faq-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ---------- 桌面分栏 ---------- */

@media (min-width: 980px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 56px;
    align-items: start;
    padding: 38px 0 64px;
  }

  .page-faq .faq-router {
    padding-bottom: 12px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    padding: 22px 20px;
  }

  .page-faq .faq-toc__list {
    display: block;
  }

  .page-faq .faq-toc__item + .faq-toc__item {
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-toc__link {
    display: flex;
    padding: 10px 0;
  }

  .page-faq .faq-figure--inline {
    padding-left: 52px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-figure--inline {
    padding-left: 52px;
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-router__card,
  .page-faq .qa,
  .page-faq .qa__toggle::before,
  .page-faq .qa__toggle::after,
  .page-faq .faq-group__head::before {
    transition: none;
  }

  .page-faq .faq-router__card:hover {
    transform: none;
  }
}