.page-faq {
  --faq-rule: rgba(36, 27, 22, .14);
  --faq-soft: rgba(36, 27, 22, .6);
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.75;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ember-deep);
  margin: 0 0 10px;
}

/* ── 刊头 ─────────────────────────────── */
.page-faq .faq-masthead {
  padding: clamp(24px, 4.5vw, 52px) 0 clamp(26px, 4vw, 40px);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--faq-soft);
}

.page-faq .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 6px;
  color: rgba(36, 27, 22, .3);
}

.page-faq .breadcrumb-list a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

.page-faq .breadcrumb-list a:hover,
.page-faq .breadcrumb-list a:focus-visible {
  border-bottom-color: currentColor;
}

.page-faq .faq-h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 6vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 0 0 18px;
  max-width: 20ch;
  transform: skewX(-4deg);
  transform-origin: left bottom;
}

.page-faq .faq-lede {
  font-size: clamp(14.5px, 1.5vw, 17px);
  line-height: 1.8;
  max-width: 46ch;
  margin: 0 0 26px;
  color: rgba(36, 27, 22, .78);
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-facts__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 600;
  line-height: 1;
  color: var(--ember-deep);
}

.page-faq .faq-facts__key {
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--faq-soft);
}

/* ── 三步引导（深色竞技场） ─────────────────── */
.page-faq .faq-steps {
  background: linear-gradient(155deg, var(--ink) 0%, var(--ink-2) 70%, #1d2a4d 100%);
  color: var(--paper);
  padding: clamp(36px, 6vw, 76px) 0 clamp(32px, 5vw, 64px);
}

.page-faq .faq-steps .eyebrow {
  color: var(--lime);
}

.page-faq .faq-steps__head {
  margin-bottom: clamp(26px, 4vw, 44px);
  max-width: 56ch;
}

.page-faq .faq-steps h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.6vw, 2.35rem);
  line-height: 1.22;
  letter-spacing: -.005em;
  margin: 0 0 14px;
  color: var(--paper);
}

.page-faq .faq-steps__intro {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 52ch;
  color: rgba(246, 238, 223, .74);
}

.page-faq .step-row {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 46px);
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-faq .step-card {
  position: relative;
  padding: 2px 0 2px 54px;
}

.page-faq .step-card::after {
  content: "";
  position: absolute;
  left: 19px;
  top: 44px;
  bottom: -26px;
  width: 1px;
  background: linear-gradient(180deg, rgba(185, 255, 75, .45), rgba(185, 255, 75, 0));
}

.page-faq .step-card:last-child::after {
  display: none;
}

.page-faq .step-card__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(185, 255, 75, .5);
  background: rgba(185, 255, 75, .07);
  color: var(--lime);
  font-size: 12.5px;
  letter-spacing: .04em;
}

.page-faq .step-card__title {
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: .01em;
  margin: 8px 0 6px;
  color: var(--paper);
}

.page-faq .step-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(246, 238, 223, .68);
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure .figure__media {
  overflow: hidden;
  border-radius: 14px;
  background: var(--ink-2);
  border: 1px solid rgba(199, 205, 214, .18);
}

.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: 12.5px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: rgba(246, 238, 223, .58);
}

/* ── 问答主体 ───────────────────────────── */
.page-faq .faq-body {
  padding: clamp(34px, 5.5vw, 68px) 0 0;
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 4vw, 48px);
  align-items: start;
}

/* 主题目录：移动端横向吸顶标签 */
.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 6;
  margin: 0;
  padding: 10px 0 12px;
  background: var(--paper);
  border-bottom: 1px solid var(--faq-rule);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-index::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__cap {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(36, 27, 22, .5);
  margin: 0 0 10px;
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--faq-rule);
  border-radius: 999px;
  background: var(--paper);
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--ember);
  background: rgba(255, 90, 31, .07);
}

.page-faq .faq-index__link[aria-current="true"] {
  border-color: var(--ember);
  background: rgba(255, 90, 31, .1);
  color: var(--ember-deep);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: rgba(36, 27, 22, .42);
}

/* 分组 */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 84px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(32px, 4.5vw, 54px);
}

.page-faq .faq-group__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-bottom: 13px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 2px;
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ember);
  padding-top: 6px;
  flex: none;
}

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.22rem, 3vw, 1.6rem);
  line-height: 1.28;
  letter-spacing: -.005em;
  margin: 0 0 4px;
}

.page-faq .faq-group__sub {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--faq-soft);
}

/* 折叠问答 */
.page-faq .qa {
  position: relative;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 30px 16px 14px;
  cursor: pointer;
  list-style: none;
  position: relative;
}

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

.page-faq .qa summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  bottom: 15px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--ember), var(--ember-deep));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .22s var(--ease);
}

.page-faq .qa[open] summary::before {
  transform: scaleY(1);
}

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

.page-faq .qa-no {
  flex: none;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  color: rgba(36, 27, 22, .38);
  padding-top: 5px;
}

.page-faq .qa-q {
  flex: 1;
  font-size: clamp(14.5px, 1.6vw, 16px);
  font-weight: 500;
  line-height: 1.6;
  transition: color .18s var(--ease);
}

.page-faq .qa[open] .qa-q {
  color: var(--ember-deep);
}

.page-faq .qa-chev {
  position: absolute;
  right: 6px;
  top: 20px;
  width: 14px;
  height: 14px;
}

.page-faq .qa-chev::before,
.page-faq .qa-chev::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 1.5px;
  background: var(--text);
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .qa-chev::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .qa[open] .qa-chev::after {
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 30px 20px 14px;
  animation: faq-reveal .22s var(--ease) both;
}

.page-faq .qa-a p {
  margin: 0 0 9px;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(36, 27, 22, .78);
  max-width: 46ch;
}

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

.page-faq .qa-a a {
  color: var(--ember-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 51, 10, .4);
  transition: border-color .18s var(--ease);
}

.page-faq .qa-a a:hover,
.page-faq .qa-a a:focus-visible {
  border-bottom-color: var(--ember-deep);
}

.page-faq .faq-term {
  text-decoration: none;
  border-bottom: 1px dashed var(--ember-deep);
  cursor: help;
  font-style: normal;
}

.page-faq .faq-figure--tall {
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  max-width: 300px;
}

.page-faq .faq-figure--tall .figure__cap {
  color: rgba(36, 27, 22, .56);
}

@keyframes faq-reveal {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── 收尾 ──────────────────────────────── */
.page-faq .faq-outro {
  margin-top: clamp(44px, 7vw, 84px);
  padding: clamp(30px, 5vw, 58px) 0 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-outro__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1.24;
  margin: 0 0 12px;
}

.page-faq .faq-outro__text {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.85;
  max-width: 54ch;
  color: rgba(36, 27, 22, .74);
}

.page-faq .faq-outro__text a {
  color: var(--ember-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 51, 10, .4);
}

.page-faq .faq-outro__text a:hover,
.page-faq .faq-outro__text a:focus-visible {
  border-bottom-color: var(--ember-deep);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-outro__actions .btn {
  border-radius: 999px;
  padding: 11px 24px;
  font-size: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: transform .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-outro__actions .btn--ember {
  background: linear-gradient(135deg, var(--ember), var(--ember-deep));
  color: var(--paper);
  border: 1px solid transparent;
}

.page-faq .faq-outro__actions .btn--line {
  border: 1px solid var(--faq-rule);
  color: var(--text);
  background: transparent;
}

.page-faq .faq-outro__actions .btn:hover,
.page-faq .faq-outro__actions .btn:focus-visible {
  transform: translateY(-2px);
  border-color: var(--ember);
}

/* ── 平板 ─────────────────────────────── */
@media (min-width: 640px) {
  .page-faq .step-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .step-card {
    padding: 2px 0 0;
  }

  .page-faq .step-card::after {
    left: 48px;
    top: 20px;
    bottom: auto;
    width: auto;
    height: 1px;
    right: -22px;
    background: linear-gradient(90deg, rgba(185, 255, 75, .45), rgba(185, 255, 75, 0));
  }

  .page-faq .step-card:last-child::after {
    display: none;
  }

  .page-faq .step-card__num {
    position: static;
    margin-bottom: 12px;
  }

  .page-faq .step-card__title {
    margin-top: 0;
  }
}

/* ── 桌面：左目录 + 右问答流 ─────────────────── */
@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 4.5vw, 68px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    padding: 18px 16px;
    background: var(--paper-2);
    border: 1px solid var(--faq-rule);
    border-radius: var(--radius);
    overflow: visible;
  }

  .page-faq .faq-index__cap {
    display: block;
  }

  .page-faq .faq-index__list {
    display: block;
    white-space: normal;
  }

  .page-faq .faq-index__link {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
    width: 100%;
    padding: 10px 2px;
    border: 0;
    border-bottom: 1px solid rgba(36, 27, 22, .1);
    border-radius: 0;
    background: transparent;
    font-size: 13.5px;
    line-height: 1.5;
    white-space: normal;
  }

  .page-faq .faq-index__list li:last-child .faq-index__link {
    border-bottom: 0;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link[aria-current="true"] {
    background: transparent;
    color: var(--ember-deep);
  }

  .page-faq .qa-q {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-a {
    animation: none;
  }

  .page-faq .qa-chev::before,
  .page-faq .qa-chev::after,
  .page-faq .qa summary::before,
  .page-faq .faq-outro__actions .btn {
    transition: none;
  }

  .page-faq .faq-outro__actions .btn:hover {
    transform: none;
  }
}