.page-faq {
  display: block;
  position: relative;
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: calc(var(--step) * 3);
}

/* ---------- 首屏拼贴 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 44px) 0 40px;
  border-bottom: 1px solid var(--edge);
  background:
    radial-gradient(120% 100% at 92% -20%, rgba(23, 178, 106, 0.22), transparent 62%),
    linear-gradient(180deg, #080D0C 0%, var(--ink-900) 100%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -70px;
  width: 260px;
  height: 260px;
  border: 1px solid var(--edge);
  transform: rotate(18deg);
  pointer-events: none;
}

.page-faq .breadcrumb {
  margin-bottom: 28px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 18em;
}

.page-faq .faq-lede {
  max-width: 60ch;
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-hero__panel {
  align-self: end;
  background: var(--ink-800);
  border-left: 3px solid var(--green);
  padding: 20px 20px 10px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-faq .faq-panel__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-quick {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-quick li + li {
  border-top: 1px solid var(--edge);
}

.page-faq .faq-quick a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 13px 0;
  min-height: 44px;
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  color: var(--green);
}

.page-faq .faq-quick .mono {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-align: right;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding: 40px 0 0;
}

.page-faq .faq-layout {
  display: grid;
  gap: 24px;
}

.page-faq .faq-layout > * {
  min-width: 0;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border-left: 1px solid var(--edge);
  padding-left: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 11px;
  min-height: 44px;
  box-sizing: border-box;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--paper);
  border-color: var(--green);
  background: var(--ink-800);
}

.page-faq .faq-index__list .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--green);
}

/* ---------- 分组标题 ---------- */
.page-faq .faq-group {
  padding: 36px 0;
  border-top: 1px solid var(--edge);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-content > .faq-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 14px;
  margin-bottom: 12px;
}

.page-faq .section-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--green);
  flex: none;
}

.page-faq .section-title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .section-note {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-group__intro {
  max-width: 62ch;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 步骤计数器 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding: 18px 18px 16px;
  background: var(--ink-800);
  border-bottom: 2px solid var(--edge);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-steps li:hover {
  border-bottom-color: var(--green);
  background: var(--ink-700);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  background: var(--green);
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 100%, 0 100%);
}

.page-faq .faq-steps h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 26px;
}

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

.page-faq .faq-figure .figure-cap {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .qa {
  background: var(--ink-800);
  border-left: 3px solid var(--edge);
  margin-bottom: 10px;
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

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

.page-faq .qa[open] {
  border-left-color: var(--green);
  background: var(--ink-700);
}

.page-faq .qa summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 20px;
  min-height: 44px;
  box-sizing: border-box;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

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

.page-faq .qa summary::marker {
  content: "";
}

.page-faq .qa summary::after {
  content: "+";
  flex: none;
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--green);
}

.page-faq .qa[open] summary::after {
  content: "\2212";
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__meta {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .qa__a {
  padding: 0 20px 18px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

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

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

.page-faq .qa__a ol,
.page-faq .qa__a ul {
  margin: 0 0 10px;
  padding-left: 20px;
}

.page-faq .qa__a li {
  margin-bottom: 5px;
}

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

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--green);
}

/* ---------- 联系信息卡 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.page-faq .faq-contact__item {
  border: 1px solid var(--edge);
  border-left: 2px solid var(--green);
  padding: 13px 16px;
  background: var(--ink-800);
}

.page-faq .faq-contact__key {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-contact__val {
  font-size: 16px;
  color: var(--paper);
  overflow-wrap: anywhere;
}

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

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

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 72px) 0 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-hero::after {
    right: 4%;
    bottom: -90px;
    width: 340px;
    height: 340px;
  }

  .page-faq .faq-body {
    padding-top: 56px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-left: 16px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
  }

  .page-faq .faq-index__list a {
    width: 100%;
  }

  .page-faq .faq-group {
    padding: 44px 0;
  }

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

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

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

@media (min-width: 1200px) {
  .page-faq .faq-layout {
    grid-template-columns: 262px minmax(0, 1fr);
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-steps li,
  .page-faq .faq-index__list a,
  .page-faq .faq-quick a {
    transition: none;
  }
}