.page-faq {
  --faq-gap: clamp(16px, 2.6vw, 28px);
  --faq-shadow: 6px 6px 0 var(--ink-edge);
  background: var(--ink);
  color: var(--white);
  padding-bottom: clamp(40px, 6vw, 76px);
  overflow-x: hidden;
}

/* ---------- 封面 ---------- */
.page-faq .faq-cover {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(28px, 4vw, 44px);
  border-bottom: var(--line);
  background:
    linear-gradient(180deg, rgba(35, 48, 107, 0.9) 0%, rgba(10, 16, 48, 0) 72%),
    repeating-linear-gradient(90deg, rgba(199, 208, 228, 0.07) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(199, 208, 228, 0.05) 0 1px, transparent 1px 72px),
    var(--ink);
}

.page-faq .faq-cover .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-cover .eyebrow {
  margin: 0 0 14px;
}

.page-faq .faq-cover h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 64px);
  line-height: 1.02;
  letter-spacing: 0.01em;
  margin: 0 0 18px;
  max-width: 20ch;
  text-wrap: balance;
}

.page-faq .faq-cover__lead {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
  color: var(--grey);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0 0 clamp(24px, 4vw, 36px);
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 8px 14px;
  border: var(--line);
  background: var(--ink-2);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: none;
  box-shadow: var(--shadow-hard-sm);
  transition: transform 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--flare);
  color: var(--ink);
  transform: translate(-2px, -2px);
}

.page-faq .faq-numbers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: rgba(199, 208, 228, 0.18);
  border: var(--line);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-numbers__cell {
  background: var(--ink-2);
  padding: 14px 16px;
}

.page-faq .faq-numbers__cell dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-faq .faq-numbers__cell dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-numbers__cell dd .tally {
  color: var(--grass);
}

.page-faq .faq-numbers__cell:last-child dd .tally {
  font-size: 16px;
  color: var(--flare);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-path {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-faq .faq-path__intro {
  max-width: 60ch;
  margin: 0 0 clamp(18px, 3vw, 26px);
  color: var(--grey);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-steps {
  list-style: none;
  padding: 0;
  margin: 0 0 clamp(24px, 4vw, 36px);
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .step {
  background: var(--ink-2);
  border: var(--line);
  border-top: 8px solid var(--mist);
  padding: 18px 18px 22px;
  box-shadow: var(--faq-shadow);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .step--one {
  border-top-color: var(--flare);
}

.page-faq .step--two {
  border-top-color: var(--grass);
}

.page-faq .step--three {
  border-top-color: var(--grey);
}

.page-faq .step__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 32px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--flare);
}

.page-faq .step--two .step__num {
  color: var(--grass);
}

.page-faq .step--three .step__num {
  color: var(--grey);
}

.page-faq .step h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: 0.02em;
  margin: 12px 0 8px;
  color: var(--white);
}

.page-faq .step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
}

.page-faq .step p a,
.page-faq .qa__body a,
.page-faq .faq-inline-link a {
  color: var(--grass);
  text-decoration: none;
  border-bottom: 1px solid rgba(75, 227, 138, 0.5);
}

.page-faq .step p a:hover,
.page-faq .qa__body a:hover,
.page-faq .faq-inline-link a:hover {
  color: var(--flare);
  border-bottom-color: var(--flare);
}

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

.page-faq .figure__media {
  border: var(--line);
  box-shadow: var(--faq-shadow);
  background: var(--ink-2);
  overflow: hidden;
}

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

.page-faq .figure__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-board {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-rail {
  border: var(--line);
  background: var(--ink-2);
  box-shadow: var(--faq-shadow);
  padding: 16px;
}

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

.page-faq .faq-rail .rail__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
}

.page-faq .faq-rail .rail__link {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid rgba(199, 208, 228, 0.28);
  color: var(--grey);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-rail .rail__link:hover,
.page-faq .faq-rail .rail__link.is-active {
  color: var(--ink);
  background: var(--grass);
  border-color: var(--ink-edge);
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
  border-top: var(--line-soft);
  padding-top: 12px;
}

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

.page-faq .qa-group {
  margin-bottom: clamp(28px, 4vw, 44px);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .qa-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  border-bottom: var(--line);
  padding-bottom: 10px;
  margin-bottom: 14px;
}

.page-faq .qa-group__head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--white);
}

.page-faq .qa {
  border: var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard-sm);
  margin-bottom: 12px;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .qa:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--faq-shadow);
}

.page-faq .qa summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
}

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

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: -4px;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--flare);
  letter-spacing: 0.06em;
}

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

.page-faq .qa__sign {
  flex: 0 0 auto;
  position: relative;
  width: 22px;
  height: 22px;
  border: 2px solid var(--ink-edge);
  background: var(--ink-3);
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--white);
}

.page-faq .qa__sign::before {
  left: 4px;
  right: 4px;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa__sign::after {
  top: 4px;
  bottom: 4px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  transition: transform 0.2s var(--ease);
}

.page-faq .qa[open] .qa__sign {
  background: var(--grass);
}

.page-faq .qa[open] .qa__sign::before,
.page-faq .qa[open] .qa__sign::after {
  background: var(--ink-edge);
}

.page-faq .qa[open] .qa__sign::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .qa[open] summary {
  background: rgba(35, 48, 107, 0.6);
}

.page-faq .qa__body {
  padding: 0 16px 16px;
  border-top: var(--line-soft);
  padding-top: 14px;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
  max-width: 68ch;
}

.page-faq .faq-archive__figure {
  margin: 20px 0 0;
}

.page-faq .faq-inline-link {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 底部帮助条 ---------- */
.page-faq .faq-help__inner {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  border: var(--line);
  background: linear-gradient(135deg, var(--ink-3) 0%, var(--ink-2) 62%, var(--ink) 100%);
  box-shadow: var(--faq-shadow);
  padding: clamp(20px, 4vw, 36px);
}

.page-faq .faq-help__text h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 34px);
  letter-spacing: 0.02em;
  margin: 0 0 10px;
  color: var(--white);
}

.page-faq .faq-help__text p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
  max-width: 54ch;
}

.page-faq .faq-help__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--grass);
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-numbers {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

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

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-board {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-rail .rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .page-faq .faq-rail .rail__link {
    display: block;
    border-color: transparent;
    border-left: 3px solid rgba(199, 208, 228, 0.24);
    padding: 9px 10px;
  }

  .page-faq .faq-rail .rail__link:hover,
  .page-faq .faq-rail .rail__link.is-active {
    border-left-color: var(--flare);
    background: rgba(75, 227, 138, 0.12);
    color: var(--white);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .qa,
  .page-faq .qa__sign::after,
  .page-faq .faq-rail .rail__link {
    transition: none;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .qa:hover {
    transform: none;
  }
}