.page-faq {
  --faq-line: rgba(62, 26, 94, .16);
  --faq-dash: rgba(46, 139, 109, .5);
  --faq-tint: rgba(107, 47, 160, .07);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow-x: clip;
  padding: clamp(1.75rem, 5vw, 3.5rem) 0 clamp(2rem, 5vw, 3.25rem);
  background: linear-gradient(180deg, var(--faq-tint), rgba(107, 47, 160, 0) 72%);
  border-bottom: var(--hair);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(1.9rem, 5vw, 3.1rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--grape-deep);
  margin: 0.6rem 0 0;
}

.page-faq .faq-hero .lede {
  margin: 1.1rem 0 0;
  max-width: 58ch;
  font-size: clamp(1rem, 1.7vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 1.1rem 0 0;
  display: grid;
  gap: 0.55rem;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-hero__meta li {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .faq-hero__key {
  display: inline-block;
  margin-right: 0.55rem;
  padding: 0.1rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--vine);
  border: 1px solid var(--faq-line);
  background: var(--paper-white);
}

.page-faq .faq-hero__media {
  margin: 0;
  padding: 0.6rem;
  background: var(--paper-white);
  border: var(--edge);
  box-shadow: var(--shadow-card);
  transform: rotate(-0.6deg);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-hero__media figcaption {
  padding-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* ---------- 通用小节标题 ---------- */
.page-faq .faq-section-head {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-section-head h2 {
  margin: 0.35rem 0 0;
  font-family: var(--font-title);
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.32;
  color: var(--grape-deep);
}

.page-faq .faq-dash {
  display: block;
  width: min(220px, 55%);
  height: auto;
  margin-top: 1rem;
  color: var(--vine);
}

/* ---------- 三条最短路径 ---------- */
.page-faq .faq-paths {
  padding: clamp(2rem, 5vw, 3.25rem) 0;
  background: var(--paper);
}

.page-faq .path-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .path-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem 1.1rem 1.4rem;
  background: var(--paper-white);
  border: 1px solid var(--faq-line);
  border-top: 4px solid var(--grape);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .path-card:nth-child(2) {
  border-top-color: var(--vine);
}

.page-faq .path-card:nth-child(3) {
  border-top-color: var(--gold);
}

.page-faq .path-card:hover,
.page-faq .path-card:focus-within {
  border-color: var(--vine);
  transform: translateY(-3px);
  box-shadow: 0 16px 30px -26px rgba(62, 26, 94, .8);
}

.page-faq .path-card__no {
  align-self: flex-start;
  padding: 0.12rem 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--grape);
  background: rgba(107, 47, 160, .09);
}

.page-faq .path-card h3 {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.06rem;
  line-height: 1.45;
  color: var(--grape-deep);
}

.page-faq .path-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .path-card .link-arrow {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.85rem;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-qa {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  border-top: var(--hair);
}

.page-faq .faq-qa__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.page-faq .faq-toc {
  padding: 1rem;
  background: var(--paper-white);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--gold);
}

.page-faq .faq-toc__title {
  margin: 0 0 0.75rem;
  padding-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--vine);
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.12rem;
}

.page-faq .faq-toc__list a {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
  padding: 0.3rem 0.4rem;
  font-size: 0.84rem;
  line-height: 1.45;
  color: var(--ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--grape);
  border-left-color: var(--vine);
  background: rgba(46, 139, 109, .08);
}

.page-faq .faq-toc__list span {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--grape);
}

.page-faq .faq-toc__note {
  margin: 0.8rem 0 0;
  font-size: 0.74rem;
  color: var(--ink-soft);
}

.page-faq .faq-qa__body > h2 {
  margin: 0 0 1.4rem;
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.3;
  color: var(--grape-deep);
}

.page-faq .qa-group + .qa-group {
  margin-top: 2.2rem;
}

.page-faq .qa-group__title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.9rem;
  padding-bottom: 0.55rem;
  font-family: var(--font-title);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  color: var(--grape-deep);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa-group__no {
  padding: 0.16rem 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--paper-white);
  background: var(--grape);
}

.page-faq .qa {
  margin: 0 0 0.6rem;
  background: var(--paper-white);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--vine-mist);
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .qa:hover {
  border-left-color: var(--grape);
}

.page-faq .qa[open] {
  border-left-color: var(--vine);
  box-shadow: 0 14px 26px -24px rgba(62, 26, 94, .9);
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  gap: 0.65rem;
  align-items: baseline;
  padding: 0.9rem 2.4rem 0.9rem 1rem;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--grape-deep);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 0.95rem;
  top: 0.72rem;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--grape);
  transition: color 0.22s ease, transform 0.22s ease;
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--vine);
  transform: rotate(180deg);
}

.page-faq .qa__no {
  flex: none;
  padding-top: 0.18rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--vine);
}

.page-faq .qa__a {
  padding: 0 1rem 1.05rem 1rem;
  font-size: 0.91rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .qa__a p {
  margin: 0 0 0.6rem;
}

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

.page-faq .qa__a code {
  padding: 0.06rem 0.34rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--grape-deep);
  background: rgba(107, 47, 160, .1);
}

.page-faq .qa__steps {
  list-style: none;
  counter-reset: step;
  margin: 0.5rem 0 0.7rem;
  padding: 0;
}

.page-faq .qa__steps li {
  position: relative;
  counter-increment: step;
  padding-left: 1.85rem;
  margin-bottom: 0.34rem;
  line-height: 1.7;
}

.page-faq .qa__steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.12rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--grape);
}

/* ---------- 联系信息条 ---------- */
.page-faq .contact-strip {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.3rem;
  padding: 1.1rem;
  background: linear-gradient(135deg, rgba(107, 47, 160, .08), rgba(46, 139, 109, .09));
  border: 1px dashed var(--grape);
}

.page-faq .contact-strip__key {
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--vine);
}

.page-faq .contact-strip__val {
  display: block;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

/* ---------- 常见错误与清单 ---------- */
.page-faq .faq-check {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  background: var(--paper-white);
  border-top: var(--hair);
}

.page-faq .faq-check__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.page-faq .mistake-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-faq .mistake-list li {
  padding: 0.7rem 0.9rem;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--ink-soft);
  background: rgba(217, 179, 108, .14);
  border-left: 3px solid var(--gold);
}

.page-faq .mistake-list strong {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--grape-deep);
  font-weight: 600;
}

.page-faq .check-intro {
  margin: 1.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--vine);
}

.page-faq .check-list {
  list-style: none;
  counter-reset: ck;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .check-list li {
  position: relative;
  counter-increment: ck;
  padding: 0.55rem 0.8rem 0.55rem 2.4rem;
  font-size: 0.89rem;
  line-height: 1.72;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--faq-line);
}

.page-faq .check-list li::before {
  content: counter(ck, decimal-leading-zero);
  position: absolute;
  left: 0.8rem;
  top: 0.62rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--vine);
}

.page-faq .faq-end {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.6rem 0 0;
}

.page-faq .faq-check__media {
  margin: 0;
}

.page-faq .faq-check__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  padding: 0.5rem;
  background: var(--paper);
  border: var(--edge);
}

.page-faq .faq-check__media figcaption {
  padding-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .contact-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .path-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .qa__a {
    padding-left: 2.6rem;
    padding-right: 1.4rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-faq .faq-check__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-qa__grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 3rem;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 7rem;
    max-height: calc(100vh - 9rem);
    overflow-y: auto;
  }
}