.page-faq {
  --faq-gap: clamp(28px, 4vw, 56px);
  color: var(--mist);
  background: var(--ink);
  font-family: var(--font-sans);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: 16px;
}
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sage);
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--rule);
}
.page-faq .breadcrumb a {
  color: var(--sage);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--lime);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
  background: var(--char);
}
.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 31, 26, 0.5) 0%, rgba(11, 31, 26, 0.9) 62%, var(--ink) 100%),
    linear-gradient(105deg, rgba(16, 19, 21, 0.85) 0%, rgba(16, 19, 21, 0) 62%);
  pointer-events: none;
}
.page-faq .faq-hero__body {
  position: relative;
  z-index: 1;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(56px, 11vw, 118px) var(--gut) clamp(34px, 6vw, 62px);
}
.page-faq .faq-hero__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}
.page-faq h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 6.6vw, 68px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--mist);
}
.page-faq .faq-hero .lead {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.78;
  color: var(--sage);
}
.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--sage);
}
.page-faq .faq-hero__meta .mono {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 3px;
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(34px, 6vw, 72px) var(--gut) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(196px, 258px) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 问题目录 ---------- */
.page-faq .faq-toc {
  border-top: 2px solid var(--lime);
  padding-top: 14px;
}
.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}
.page-faq .faq-toc ol {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-toc a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 2px solid var(--rule);
  color: var(--sage);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--mist);
  border-left-color: var(--lime);
  background: var(--lime-veil);
}
.page-faq .faq-toc__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}
@media (min-width: 960px) {
  .page-faq .faq-toc {
    position: sticky;
    top: 22px;
  }
}

/* ---------- 章节 ---------- */
.page-faq .faq-body {
  min-width: 0;
}
.page-faq .faq-chapter {
  scroll-margin-top: 96px;
  margin-bottom: clamp(38px, 5vw, 66px);
}
.page-faq .faq-chapter:last-of-type {
  margin-bottom: 0;
}
.page-faq .faq-chapter__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.3s var(--ease);
}
.page-faq .faq-chapter:target .faq-chapter__head {
  border-bottom-color: var(--lime);
}
.page-faq .faq-chapter:target .faq-no {
  background: var(--gold);
}
.page-faq .faq-no {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--lime);
  color: var(--char);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 78% 100%, 0 100%);
  transition: background 0.3s var(--ease);
}
.page-faq .faq-chapter__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--mist);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--rule);
}
.page-faq .faq-q {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 4px;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--mist);
  transition: color 0.2s var(--ease);
}
.page-faq .faq-q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q::marker {
  content: "";
}
.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--lime);
}
.page-faq .faq-mark {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
  background: var(--night);
  border: 1px solid var(--rule);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-faq .faq-item[open] .faq-mark {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--char);
}
.page-faq .faq-a {
  padding: 0 0 20px;
}
@media (min-width: 560px) {
  .page-faq .faq-a {
    padding-left: 38px;
  }
}
.page-faq .faq-a p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--sage);
}
.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-a strong {
  color: var(--mist);
  font-weight: 600;
}
.page-faq .faq-a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-veil);
  transition: border-color 0.2s var(--ease);
}
.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  border-bottom-color: var(--lime);
}

/* ---------- 内联图示 ---------- */
.page-faq .faq-diagram {
  margin: 16px 0 0;
  padding: 16px;
  background: var(--night);
  border: 1px solid var(--rule);
}
.page-faq .faq-diagram svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 480px;
}
.page-faq .faq-diagram__frame {
  fill: none;
  stroke: var(--rule);
  stroke-width: 1;
}
.page-faq .faq-diagram__cell {
  fill: var(--char);
  stroke: var(--rule);
  stroke-width: 1;
}
.page-faq .faq-diagram__hot {
  fill: var(--lime-veil);
  stroke: var(--lime);
  stroke-width: 1.6;
}
.page-faq .faq-diagram__txt {
  fill: var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}
.page-faq .faq-diagram figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
}

.page-faq .faq-ruler-wrap {
  margin: 16px 0 0;
  padding: 14px 16px 6px;
  background: var(--night);
  border: 1px solid var(--rule);
}
.page-faq .faq-ruler {
  display: block;
  width: 100%;
  height: auto;
  max-width: 520px;
}
.page-faq .faq-ruler__axis {
  stroke: var(--rule);
  stroke-width: 1;
}
.page-faq .faq-ruler__tick {
  stroke: var(--sage);
  stroke-width: 1;
  opacity: 0.55;
}
.page-faq .faq-ruler__node {
  fill: var(--lime);
}
.page-faq .faq-ruler__tag {
  fill: var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}
.page-faq .faq-ruler__wl {
  fill: var(--sage);
  font-family: var(--font-mono);
  font-size: 10px;
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 26px;
}
@media (min-width: 760px) {
  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
  }
}
.page-faq .faq-contact {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-contact li {
  padding: 4px 0 4px 15px;
  border-left: 2px solid var(--rule);
}
.page-faq .faq-contact__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}
.page-faq .faq-contact__val {
  display: block;
  margin-top: 5px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--mist);
  word-break: break-word;
}
.page-faq .faq-contact__val a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-veil);
}
.page-faq .faq-contact__val a:hover,
.page-faq .faq-contact__val a:focus-visible {
  border-bottom-color: var(--lime);
}
.page-faq .faq-contact__sub {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--sage);
}
.page-faq .faq-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--char);
  border: 1px solid var(--rule);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}
.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, var(--lime-veil) 0%, rgba(198, 255, 61, 0) 58%);
  pointer-events: none;
}

/* ---------- 页尾注释 ---------- */
.page-faq .faq-tail {
  margin: clamp(34px, 5vw, 58px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc a,
  .page-faq .faq-q,
  .page-faq .faq-mark,
  .page-faq .faq-no {
    transition: none;
  }
}