.page-faq {
  --faq-grid: rgba(10, 31, 60, 0.062);
  --faq-radius: 6px;
  --faq-hair: rgba(255, 255, 255, 0.18);
  display: block;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3vw, 32px) 0 clamp(36px, 5vw, 64px);
  background:
    radial-gradient(circle at 86% 8%, rgba(27, 87, 214, 0.11), transparent 46%),
    linear-gradient(var(--faq-grid) 1px, transparent 1px) 0 0 / 100% 38px,
    linear-gradient(90deg, var(--faq-grid) 1px, transparent 1px) 0 0 / 38px 100%,
    var(--paper);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -56px;
  width: 320px;
  height: 150px;
  background: linear-gradient(90deg, transparent, rgba(240, 101, 13, 0.16));
  transform: skewX(-24deg);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 32px);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-size: clamp(28px, 6vw, 46px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--deep);
}

.page-faq .faq-hero__lede {
  margin: 0;
  color: var(--ink-2);
}

.page-faq .faq-hero__points {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.6;
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  box-shadow: 0 26px 46px -34px rgba(10, 31, 60, 0.55);
}

.page-faq .bs-media img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 问答双栏 ---------- */
.page-faq .faq-qa {
  padding-block: clamp(36px, 5vw, 72px);
}

.page-faq .faq-qa__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-toc a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 13px 4px;
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color 0.22s var(--ease), padding-left 0.22s var(--ease);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--blue);
  padding-left: 10px;
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--ink-2);
}

.page-faq .faq-item {
  margin: 0 0 12px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

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

.page-faq .faq-item[open] {
  border-color: rgba(27, 87, 214, 0.42);
  box-shadow: 0 16px 34px -28px rgba(10, 31, 60, 0.6);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--deep);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--blue);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--orange);
}

.page-faq .faq-item__n {
  flex: none;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  line-height: 1.6;
  color: var(--blue);
}

.page-faq .faq-item__a {
  padding: 0 20px 20px;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 34em;
}

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

/* ---------- 排查单 ---------- */
.page-faq .faq-fix {
  position: relative;
  padding-block: clamp(36px, 5vw, 76px);
  background: var(--deep);
  color: #fff;
  overflow: hidden;
}

.page-faq .faq-fix::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-faq .faq-fix::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(240, 101, 13, 0.26), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-fix > .bs-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-fix__head .bs-section__index,
.page-faq .faq-fix__head .bs-section__kicker {
  color: var(--sky);
}

.page-faq .faq-fix__head .bs-section__title {
  color: #fff;
}

.page-faq .faq-fix__head {
  border-top-color: rgba(255, 255, 255, 0.24);
}

.page-faq .faq-fix__lede {
  margin: clamp(16px, 2.5vw, 24px) 0 0;
  max-width: 46em;
  color: rgba(255, 255, 255, 0.76);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-fix__grid {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-hair);
  border: 1px solid var(--faq-hair);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-fix__grid > li {
  background: var(--deep-2);
  padding: 20px 20px 22px;
}

.page-faq .faq-fix__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-fix__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: #fff;
}

.page-faq .faq-fix__grid p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(255, 255, 255, 0.72);
}

.page-faq .faq-stats {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-hair);
  border: 1px solid var(--faq-hair);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-stats li {
  background: rgba(255, 255, 255, 0.04);
  padding: 16px 18px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-faq .faq-stats__n {
  flex: none;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--sky);
}

.page-faq .faq-stats__t {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.72);
}

/* ---------- 联系收尾 ---------- */
.page-faq .faq-contact {
  padding-block: clamp(36px, 5vw, 76px);
}

.page-faq .faq-contact__panel {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(22px, 3vw, 38px);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-contact__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--blue), var(--orange));
}

.page-faq .faq-contact__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 900;
  line-height: 1.24;
  color: var(--deep);
}

.page-faq .faq-contact__text {
  margin: 0;
  max-width: 36em;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: clamp(18px, 2.5vw, 26px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__label {
  flex: none;
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

.page-faq .faq-contact__value {
  flex: 1 1 180px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--deep);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: clamp(16px, 2vw, 22px) 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

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

.page-faq .faq-contact__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--deep);
}

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

/* ---------- 焦点可见性 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-fix__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-contact__panel {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-qa__grid {
    grid-template-columns: 288px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-qa__aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-fix__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc a,
  .page-faq .faq-item {
    transition-duration: 0.12s;
  }
}