.page-faq .crumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--graphite);
}

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

.page-faq .crumb a:hover,
.page-faq .crumb a:focus-visible {
  color: var(--flame-soft);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 5vw, 52px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(255, 77, 0, 0.16) 0%, rgba(255, 77, 0, 0) 58%),
    var(--ink-900);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
  margin-top: clamp(22px, 4vw, 38px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper-hi);
  margin: 14px 0 16px;
  max-width: 14ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
  opacity: 0.74;
}

.page-faq .faq-hero__stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__stat {
  background: var(--ink-800);
  padding: 16px 18px;
}

.page-faq .faq-hero__stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: 8px;
}

.page-faq .faq-hero__stat dd {
  margin: 0;
  font-size: 13px;
  color: var(--paper);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__num {
  color: var(--flame);
  font-size: 20px;
  font-weight: 700;
  margin-right: 4px;
}

/* ---------- 分类总览 ---------- */
.page-faq .faq-index {
  padding: clamp(36px, 7vw, 76px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index__head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-faq .faq-index h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper-hi);
  margin: 12px 0 12px;
}

.page-faq .faq-index__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper);
  opacity: 0.7;
}

.page-faq .faq-index__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

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

/* ---------- 分栏骨架 ---------- */
.page-faq .faq-layout {
  padding: clamp(34px, 6vw, 72px) 0 clamp(48px, 9vw, 96px);
}

.page-faq .faq-rail {
  margin-bottom: 36px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 11px 12px;
  background: var(--ink-900);
  color: var(--paper);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.4;
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  background: var(--ink-800);
  color: var(--paper-hi);
  box-shadow: inset 3px 0 0 var(--flame);
  outline: none;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  flex: 0 0 auto;
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-cat {
  scroll-margin-top: 24px;
  margin-bottom: clamp(38px, 6vw, 64px);
}

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

.page-faq .faq-cat__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 12px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-cat:target .faq-cat__head {
  border-bottom-color: var(--flame);
}

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--flame);
  border: 1px solid var(--flame);
  padding: 3px 7px;
  line-height: 1;
  flex: 0 0 auto;
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-cat:target .faq-cat__num {
  background: var(--flame);
  color: var(--ink-900);
}

.page-faq .faq-cat__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.2vw, 28px);
  letter-spacing: -0.012em;
  line-height: 1.2;
  color: var(--paper-hi);
}

.page-faq .faq-cat__lead {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--paper);
  opacity: 0.62;
}

.page-faq .faq-cat__figure {
  margin: 22px 0 4px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

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

.page-faq .faq-cat__more {
  margin: 18px 0 0;
  font-size: 14px;
}

.page-faq .faq-cat__more a {
  color: var(--flame-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-cat__more a:hover,
.page-faq .faq-cat__more a:focus-visible {
  border-bottom-color: var(--flame-soft);
  outline: none;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
  margin-top: 0;
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
  background: var(--ink-900);
  transition: background 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .qa[open] {
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.09), rgba(0, 229, 255, 0) 46%);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .qa summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 17px 16px 17px 12px;
  cursor: pointer;
  list-style: none;
  color: var(--paper-hi);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  transition: color 0.18s var(--ease), padding-left 0.18s var(--ease);
}

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

.page-faq .qa summary:hover,
.page-faq .qa summary:focus-visible {
  padding-left: 18px;
  outline: none;
}

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.18s var(--ease);
}

.page-faq .qa[open] summary::after {
  content: "–";
  transform: rotate(0deg);
}

.page-faq .qa summary:focus-visible {
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-faq .qa__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding-top: 3px;
  color: var(--cyan-deep);
}

.page-faq .qa[open] .qa__no {
  color: var(--cyan);
}

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

.page-faq .qa__a {
  padding: 0 18px 20px 46px;
  color: rgba(244, 239, 231, 0.76);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-faq .qa__steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  counter-reset: faq-step;
  display: grid;
  gap: 8px;
}

.page-faq .qa__steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(244, 239, 231, 0.66);
}

.page-faq .qa__steps li::before {
  counter-increment: faq-step;
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 3px;
}

/* ---------- 联系卡片 ---------- */
.page-faq .faq-contact {
  margin-top: 24px;
  padding: 20px 18px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--flame);
  display: grid;
  gap: 8px;
}

.page-faq .faq-contact__label {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-faq .faq-contact p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  font-family: var(--font-mono);
  word-break: break-word;
}

.page-faq .faq-contact__k {
  display: inline-block;
  min-width: 5.5em;
  color: var(--graphite);
  font-family: var(--font-body);
  font-size: 13px;
}

.page-faq .faq-contact__note {
  margin-top: 6px !important;
  font-family: var(--font-body) !important;
  font-size: 12.5px !important;
  color: var(--graphite) !important;
}

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

  .page-faq .qa summary {
    font-size: 16.5px;
    padding: 19px 22px 19px 18px;
  }

  .page-faq .qa__a {
    padding: 0 24px 22px 56px;
    font-size: 15px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 24px;
    margin-bottom: 0;
  }

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

  .page-faq .faq-cat {
    scroll-margin-top: 32px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}