.page-faq {
  --faq-accent: var(--yk-cyan);
  --faq-indent: 40px;
  background: var(--yk-ink);
  color: var(--yk-cream);
  font-family: var(--yk-font-sans);
  font-size: 16px;
  line-height: 1.75;
}

/* 面包屑 */
.page-faq .faq-crumb {
  border-bottom: 1px solid var(--yk-line);
  background: var(--yk-ink-2);
}
.page-faq .faq-crumb .yk-shell {
  padding-top: 12px;
  padding-bottom: 12px;
}
.page-faq .yk-breadcrumb__item a {
  color: var(--yk-mist);
  text-decoration: none;
}
.page-faq .yk-breadcrumb__item a:hover {
  color: var(--yk-cyan);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  border-bottom: 1px solid var(--yk-line);
  background:
    linear-gradient(180deg, rgba(59, 232, 200, 0.07), rgba(6, 26, 21, 0) 62%),
    var(--yk-ink-2);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 232, 200, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 232, 200, 0.07) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 32px;
  padding-top: 38px;
  padding-bottom: 38px;
}
.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--yk-cyan);
}
.page-faq .faq-hero__title {
  margin: 0 0 18px;
  max-width: 20ch;
  font-size: clamp(28px, 7.2vw, 54px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--yk-cream);
}
.page-faq .faq-hero__text {
  max-width: 36em;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yk-mist);
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 首屏索引面板 */
.page-faq .faq-hero__panel {
  position: relative;
  padding: 20px 18px 18px;
  border: 1px solid var(--yk-line);
  background: rgba(6, 26, 21, 0.82);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}
.page-faq .faq-hero__panel-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--yk-stone);
}
.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-groups__item a {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--yk-line);
  color: var(--yk-mist);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.18s var(--yk-ease);
}
.page-faq .faq-groups__item:last-child a {
  border-bottom: 0;
}
.page-faq .faq-groups__item a:hover,
.page-faq .faq-groups__item a:focus-visible {
  color: var(--yk-cyan);
}
.page-faq .faq-groups__n {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--yk-stone);
}
.page-faq .faq-groups__item a:hover .faq-groups__n {
  color: var(--yk-cyan);
}
.page-faq .faq-groups__arrow {
  color: var(--yk-ink-3);
  font-size: 16px;
  line-height: 1;
}

/* 主体骨架 */
.page-faq .faq-body {
  display: grid;
  gap: 26px;
  padding-top: 34px;
  padding-bottom: 64px;
}
.page-faq .faq-flow {
  min-width: 0;
}

/* 左侧索引 */
.page-faq .faq-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}
.page-faq .faq-nav::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-nav__link {
  flex: none;
  white-space: nowrap;
  padding: 8px 13px;
  border: 1px solid var(--yk-line);
  color: var(--yk-mist);
  font-size: 13px;
  text-decoration: none;
  transition:
    color 0.18s var(--yk-ease),
    border-color 0.18s var(--yk-ease),
    background-color 0.18s var(--yk-ease);
}
.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--yk-cream);
  border-color: var(--yk-cyan);
  background: rgba(59, 232, 200, 0.06);
}
.page-faq .faq-nav__link[aria-current="true"] {
  color: var(--yk-cyan);
  border-color: var(--yk-cyan);
  background: rgba(59, 232, 200, 0.1);
}

/* 分组 */
.page-faq .faq-cat {
  position: relative;
  scroll-margin-top: 96px;
  padding-top: 30px;
}
.page-faq .faq-cat__band {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  padding: 5px 11px;
  border: 1px solid var(--faq-accent);
  color: var(--faq-accent);
  font-family: var(--yk-font-mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.page-faq .faq-cat__lede {
  max-width: 40em;
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yk-mist);
}
.page-faq .yk-section__head {
  margin-bottom: 12px;
}
.page-faq .yk-section__num {
  color: var(--faq-accent);
  font-size: 12px;
}
.page-faq .yk-section__title {
  margin: 0;
  font-size: clamp(22px, 4.6vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--yk-cream);
}

.page-faq .faq-cat--start { --faq-accent: var(--yk-cyan); }
.page-faq .faq-cat--squad { --faq-accent: var(--yk-orange); }
.page-faq .faq-cat--version { --faq-accent: var(--yk-clay); }
.page-faq .faq-cat--record { --faq-accent: var(--yk-moss); }
.page-faq .faq-cat--sort { --faq-accent: var(--yk-cyan); }
.page-faq .faq-cat--account { --faq-accent: var(--yk-moss); }
.page-faq .faq-cat--contact { --faq-accent: var(--yk-orange); }

/* 问答 */
.page-faq .faq-list {
  border-top: 1px solid var(--yk-line);
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--yk-line);
}
.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 0;
  color: var(--yk-cream);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::marker {
  content: "";
}
.page-faq .faq-item__q:hover .faq-item__text,
.page-faq .faq-item__q:focus-visible .faq-item__text {
  color: var(--yk-cyan);
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--yk-cyan);
  outline-offset: 2px;
}
.page-faq .faq-item__num {
  padding-top: 5px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-accent);
}
.page-faq .faq-item__text {
  transition: color 0.18s var(--yk-ease);
}
.page-faq .faq-item__icon {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  color: var(--yk-stone);
  transition: color 0.2s var(--yk-ease);
}
.page-faq .faq-item[open] .faq-item__icon {
  color: var(--faq-accent);
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
}
.page-faq .faq-item__icon::before {
  width: 12px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}
.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 12px;
  transform: translate(-50%, -50%);
  transition: transform 0.2s var(--yk-ease);
}
.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}
.page-faq .faq-item__a {
  padding: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yk-mist);
}
.page-faq .faq-item__a p {
  max-width: 40em;
  margin: 0 0 10px;
}
.page-faq .faq-item__a p:last-of-type {
  margin-bottom: 0;
}
.page-faq .faq-item[open] .faq-item__a {
  animation: faq-reveal 0.2s var(--yk-ease);
}
@keyframes faq-reveal {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}
.page-faq .faq-item__go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(59, 232, 200, 0.4);
  color: var(--yk-cyan);
  font-family: var(--yk-font-mono);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 0.18s var(--yk-ease), gap 0.18s var(--yk-ease);
}
.page-faq .faq-item__go::after {
  content: "→";
}
.page-faq .faq-item__go:hover {
  gap: 10px;
  border-bottom-color: var(--yk-cyan);
}

/* 图片 */
.page-faq .faq-figure {
  position: relative;
  margin: 0 0 22px;
  border: 1px solid var(--yk-line);
  background: var(--yk-ink-2);
  overflow: hidden;
}
.page-faq .faq-figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}
.page-faq .faq-figure__cap {
  display: block;
  padding: 10px 12px;
  border-top: 1px solid var(--yk-line);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--yk-stone);
}

/* 三步卡片带 */
.page-faq .faq-steps {
  display: grid;
  gap: 1px;
  margin: 0 0 26px;
  border: 1px solid var(--yk-line);
  border-top: 2px solid var(--yk-orange);
  background: var(--yk-line);
}
.page-faq .faq-step {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--yk-ink-2);
}
.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 2px;
  background: var(--yk-orange);
}
.page-faq .faq-step__num {
  display: block;
  margin-bottom: 14px;
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--yk-orange);
}
.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--yk-cream);
}
.page-faq .faq-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--yk-mist);
}

/* 版本并排 */
.page-faq .faq-versus {
  display: grid;
  gap: 1px;
  margin: 0 0 22px;
  border: 1px solid var(--yk-line);
  background: var(--yk-line);
}
.page-faq .faq-ver {
  position: relative;
  padding: 22px 20px 22px 23px;
  background: var(--yk-ink-2);
}
.page-faq .faq-ver::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--faq-accent);
}
.page-faq .faq-ver--old { --faq-accent: var(--yk-clay); }
.page-faq .faq-ver--new {
  --faq-accent: var(--yk-cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.page-faq .faq-ver h3 {
  margin: 12px 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--yk-cream);
}
.page-faq .faq-ver p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--yk-mist);
}

/* 记录图文分栏 */
.page-faq .faq-split {
  display: grid;
  gap: 22px;
}
.page-faq .faq-split .faq-figure {
  margin-bottom: 0;
}

/* 联系区块 */
.page-faq .faq-contact {
  display: grid;
  gap: 24px;
  margin-top: 6px;
  padding: 26px 20px;
  border: 1px solid var(--yk-line);
  background:
    linear-gradient(150deg, rgba(255, 122, 47, 0.09), rgba(6, 26, 21, 0) 58%),
    var(--yk-ink-2);
}
.page-faq .faq-contact__title {
  margin: 14px 0 12px;
  font-size: clamp(22px, 4.6vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--yk-cream);
}
.page-faq .faq-contact__intro p {
  max-width: 36em;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yk-mist);
}
.page-faq .faq-contact__intro .yk-btn {
  margin-top: 6px;
}
.page-faq .faq-contact__card {
  padding: 16px 16px 14px;
  border-top: 2px solid var(--yk-orange);
  background: rgba(6, 26, 21, 0.72);
}
.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 12px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--yk-line);
}
.page-faq .faq-contact__key {
  grid-column: 1 / -1;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--yk-stone);
}
.page-faq .faq-contact__val {
  min-width: 0;
  font-family: var(--yk-font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--yk-cream);
  word-break: break-all;
}
.page-faq .faq-contact__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--yk-mist);
}
.page-faq .yk-copy {
  align-self: center;
  padding: 6px 11px;
  border: 1px solid var(--yk-line);
  background: transparent;
  color: var(--yk-cyan);
  font-family: var(--yk-font-mono);
  font-size: 12px;
  line-height: 1.4;
  cursor: pointer;
  transition:
    border-color 0.18s var(--yk-ease),
    background-color 0.18s var(--yk-ease),
    color 0.18s var(--yk-ease);
}
.page-faq .yk-copy:hover,
.page-faq .yk-copy:focus-visible {
  border-color: var(--yk-cyan);
  background: rgba(59, 232, 200, 0.1);
}
.page-faq .yk-copy[data-state="done"] {
  border-color: var(--yk-cyan);
  background: var(--yk-cyan);
  color: var(--yk-ink);
}

/* 断点 */
@media (min-width: 640px) {
  .page-faq .faq-item__q {
    gap: 14px;
    padding: 17px 0;
    font-size: 17px;
  }
  .page-faq .faq-item__a {
    padding-left: var(--faq-indent);
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-versus {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .faq-contact {
    padding: 32px 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 52px;
    align-items: end;
    padding-top: 68px;
    padding-bottom: 60px;
  }
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
    align-items: start;
  }
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    padding: 38px 34px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 54px;
    padding-top: 54px;
    padding-bottom: 96px;
  }
  .page-faq .faq-side {
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-faq .faq-nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-nav__link {
    padding: 10px 12px;
    border: 0;
    border-left: 2px solid var(--yk-line);
    white-space: normal;
    font-size: 13px;
    line-height: 1.5;
  }
  .page-faq .faq-cat {
    padding-top: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }
  .page-faq .faq-item__icon,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-item__text,
  .page-faq .faq-item__go,
  .page-faq .faq-nav__link,
  .page-faq .yk-copy {
    transition: none;
  }
}