/* ============================================================
   知识中心 / 常见问题  ——  作用域限定在 .page-faq
   ============================================================ */

.page-faq {
  --faq-soft: rgba(75, 74, 71, .24);
  --faq-card-shadow: 4px 4px 0 rgba(75, 74, 71, .85);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-faq .mono {
  font-family: var(--font-mono);
  letter-spacing: .08em;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--wine-deep);
  color: var(--paper);
  border-bottom: var(--bw) solid var(--stone);
  padding-bottom: clamp(30px, 5vw, 52px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -170px;
  right: -130px;
  width: 540px;
  height: 540px;
  border-radius: 50%;
  background: repeating-conic-gradient(from 0deg,
      rgba(34, 224, 214, .20) 0deg .6deg,
      transparent .6deg 7.5deg);
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -60px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  border: 1px solid rgba(232, 199, 123, .26);
  box-shadow:
    0 0 0 44px rgba(232, 199, 123, .05),
    0 0 0 88px rgba(232, 199, 123, .03);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  padding: 20px 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--stone-light);
}

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

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: var(--stone-light);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-top: 6px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.2vw, 56px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__title span {
  color: var(--gold);
  text-shadow: 0 0 20px rgba(232, 199, 123, .38);
}

.page-faq .faq-hero__lead {
  max-width: 46ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.75;
  color: rgba(244, 239, 230, .86);
}

.page-faq .faq-hero__side {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stat {
  padding: 12px 0 12px 14px;
  border-left: 3px solid rgba(232, 199, 123, .45);
}

.page-faq .faq-hero__statnum {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-hero__statlabel {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(244, 239, 230, .68);
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(190px, .75fr);
    gap: 52px;
    align-items: end;
  }

  .page-faq .faq-hero__side {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .page-faq .faq-hero__stat {
    padding: 14px 0 14px 18px;
    border-bottom: 1px solid rgba(244, 239, 230, .14);
  }

  .page-faq .faq-hero__stat:last-child {
    border-bottom: none;
  }

  .page-faq .faq-hero__statnum {
    display: inline;
    margin-right: 10px;
  }

  .page-faq .faq-hero__statlabel {
    display: inline;
    margin-top: 0;
  }
}

/* ---------- 分类书签条 ---------- */

.page-faq .faq-deck {
  padding: clamp(26px, 4vw, 44px) 0 0;
}

.page-faq .faq-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-tabs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 20px;
  margin-bottom: 26px;
  border-bottom: var(--bw) solid var(--stone);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-tab {
  --cat: var(--stone);
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 16px;
  background: var(--card);
  border: var(--bw) solid var(--stone);
  box-shadow: 3px 3px 0 var(--stone);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: transform .18s var(--ease),
              box-shadow .18s var(--ease),
              background .18s var(--ease),
              color .18s var(--ease),
              border-color .18s var(--ease);
}

.page-faq .faq-tab::before {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cat);
}

.page-faq .faq-tab__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--stone-light);
}

.page-faq .faq-tab:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--stone);
}

.page-faq .faq-tab[for="ff-all"] { --cat: var(--ink); }
.page-faq .faq-tab[for="ff-version"] { --cat: var(--stone); }
.page-faq .faq-tab[for="ff-room"] { --cat: var(--moss); }
.page-faq .faq-tab[for="ff-settle"] { --cat: var(--clay); }
.page-faq .faq-tab[for="ff-account"] { --cat: var(--wine); }
.page-faq .faq-tab[for="ff-compat"] { --cat: var(--magenta); }

.page-faq #ff-all:checked ~ .faq-tabs .faq-tab[for="ff-all"],
.page-faq #ff-version:checked ~ .faq-tabs .faq-tab[for="ff-version"],
.page-faq #ff-room:checked ~ .faq-tabs .faq-tab[for="ff-room"],
.page-faq #ff-settle:checked ~ .faq-tabs .faq-tab[for="ff-settle"],
.page-faq #ff-account:checked ~ .faq-tabs .faq-tab[for="ff-account"],
.page-faq #ff-compat:checked ~ .faq-tabs .faq-tab[for="ff-compat"] {
  background: var(--wine);
  border-color: var(--wine);
  color: var(--paper);
  box-shadow: 3px 3px 0 var(--gold);
}

.page-faq #ff-all:checked ~ .faq-tabs .faq-tab[for="ff-all"] .faq-tab__count,
.page-faq #ff-version:checked ~ .faq-tabs .faq-tab[for="ff-version"] .faq-tab__count,
.page-faq #ff-room:checked ~ .faq-tabs .faq-tab[for="ff-room"] .faq-tab__count,
.page-faq #ff-settle:checked ~ .faq-tabs .faq-tab[for="ff-settle"] .faq-tab__count,
.page-faq #ff-account:checked ~ .faq-tabs .faq-tab[for="ff-account"] .faq-tab__count,
.page-faq #ff-compat:checked ~ .faq-tabs .faq-tab[for="ff-compat"] .faq-tab__count {
  color: var(--gold);
}

.page-faq #ff-all:checked ~ .faq-tabs .faq-tab[for="ff-all"]::before,
.page-faq #ff-version:checked ~ .faq-tabs .faq-tab[for="ff-version"]::before,
.page-faq #ff-room:checked ~ .faq-tabs .faq-tab[for="ff-room"]::before,
.page-faq #ff-settle:checked ~ .faq-tabs .faq-tab[for="ff-settle"]::before,
.page-faq #ff-account:checked ~ .faq-tabs .faq-tab[for="ff-account"]::before,
.page-faq #ff-compat:checked ~ .faq-tabs .faq-tab[for="ff-compat"]::before {
  background: var(--cyan);
}

/* ---------- 分类图标横幅 ---------- */

.page-faq .faq-map {
  margin: 0 0 34px;
}

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

/* ---------- 分类过滤 ---------- */

.page-faq #ff-version:checked ~ .faq-groups .faq-group,
.page-faq #ff-room:checked ~ .faq-groups .faq-group,
.page-faq #ff-settle:checked ~ .faq-groups .faq-group,
.page-faq #ff-account:checked ~ .faq-groups .faq-group,
.page-faq #ff-compat:checked ~ .faq-groups .faq-group {
  display: none;
}

.page-faq #ff-version:checked ~ .faq-groups .faq-group[data-cat="version"],
.page-faq #ff-room:checked ~ .faq-groups .faq-group[data-cat="room"],
.page-faq #ff-settle:checked ~ .faq-groups .faq-group[data-cat="settle"],
.page-faq #ff-account:checked ~ .faq-groups .faq-group[data-cat="account"],
.page-faq #ff-compat:checked ~ .faq-groups .faq-group[data-cat="compat"] {
  display: block;
}

.page-faq .faq-groups {
  padding-bottom: clamp(20px, 3vw, 34px);
}

/* ---------- 单个分类 ---------- */

.page-faq .faq-group {
  --cat: var(--stone);
  margin-bottom: clamp(38px, 5vw, 58px);
}

.page-faq .faq-group[data-cat="version"] { --cat: var(--stone); }
.page-faq .faq-group[data-cat="room"] { --cat: var(--moss); }
.page-faq .faq-group[data-cat="settle"] { --cat: var(--clay); }
.page-faq .faq-group[data-cat="account"] { --cat: var(--wine); }
.page-faq .faq-group[data-cat="compat"] { --cat: var(--magenta); }

.page-faq .faq-group__head {
  position: relative;
  padding-left: 18px;
  border-left: 7px solid var(--cat);
  margin-bottom: 22px;
}

.page-faq .faq-group__head .sec-head__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--stone-light);
  margin: 0 0 8px;
}

.page-faq .faq-group__head .sec-head__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 2.6vw, 32px);
  line-height: 1.25;
  color: var(--ink);
}

.page-faq .faq-group__head .sec-head__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 折叠条目 ---------- */

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  position: relative;
  overflow: hidden;
  background: var(--card);
  border: var(--bw) solid var(--stone);
  box-shadow: var(--faq-card-shadow);
  transition: transform .2s var(--ease),
              box-shadow .2s var(--ease),
              border-color .2s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 7px;
  background: var(--cat);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .22s var(--ease);
  z-index: 1;
}

.page-faq .faq-item:hover::before,
.page-faq .faq-item:focus-within::before,
.page-faq .faq-item:has(details[open])::before {
  transform: scaleY(1);
}

.page-faq .faq-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(75, 74, 71, .9);
}

.page-faq .faq-item:has(details[open]) {
  border-color: var(--cat);
  box-shadow: 6px 6px 0 rgba(20, 16, 15, .22);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 20px 16px 24px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  transition: background .18s var(--ease);
}

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

.page-faq .faq-item__summary::marker {
  content: "";
}

.page-faq .faq-item__summary:hover {
  background: rgba(34, 224, 214, .07);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--stone-light);
  padding-top: 2px;
}

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

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  align-self: center;
  width: 18px;
  height: 18px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--stone);
  transition: transform .24s var(--ease), background .18s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 3px;
}

.page-faq .faq-item__mark::after {
  left: 8px;
  top: 0;
  width: 3px;
  height: 18px;
}

.page-faq details[open] .faq-item__mark::before,
.page-faq details[open] .faq-item__mark::after {
  background: var(--cat);
}

.page-faq details[open] .faq-item__mark::after {
  transform: rotate(90deg);
}

.page-faq .faq-item__body {
  padding: 16px 22px 22px 24px;
  border-top: 1px solid var(--faq-soft);
  font-size: 16px;
  line-height: 1.8;
  color: #3a3735;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 68ch;
}

.page-faq .faq-item__body p + p {
  margin-top: 12px;
}

.page-faq .faq-item__body strong {
  font-weight: 700;
  color: var(--ink);
  background: linear-gradient(transparent 60%, rgba(232, 199, 123, .55) 60%);
  padding: 0 2px;
}

.page-faq .faq-item__body a {
  color: var(--wine);
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--magenta);
  border-bottom-color: var(--magenta);
}

@media (max-width: 600px) {
  .page-faq .faq-item__summary {
    gap: 10px;
    padding: 14px 14px 14px 18px;
    font-size: 15px;
  }

  .page-faq .faq-item__body {
    padding: 14px 16px 18px 18px;
    font-size: 15px;
  }
}

/* ---------- 没找到答案 ---------- */

.page-faq .faq-help {
  background: var(--wine);
  color: var(--paper);
  border-top: var(--bw) solid var(--stone);
  border-bottom: var(--bw) solid var(--stone);
  padding: clamp(38px, 6vw, 68px) 0;
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-help__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-help__lead {
  margin: 0 0 24px;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(244, 239, 230, .84);
}

.page-faq .faq-help__steps {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-help__steps li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 12px 0 12px 0;
  border-bottom: 1px solid rgba(244, 239, 230, .16);
}

.page-faq .faq-help__stepno {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-help__steptext {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 239, 230, .9);
}

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

.page-faq .faq-help__copy {
  border-color: var(--gold);
  color: var(--gold);
  background: transparent;
}

.page-faq .faq-help__copy:hover {
  background: var(--gold);
  color: var(--wine-deep);
}

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

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

@media (min-width: 900px) {
  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
    gap: 52px;
    align-items: center;
  }
}

/* ---------- 接着看 ---------- */

.page-faq .faq-links {
  padding: clamp(34px, 5vw, 56px) 0 clamp(44px, 6vw, 72px);
}

.page-faq .faq-links__label {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--stone-light);
}

.page-faq .faq-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--bw) solid var(--stone);
}

.page-faq .faq-links__list li {
  border-bottom: 1px solid var(--faq-soft);
}

.page-faq .faq-links__list a {
  display: block;
  padding: 16px 4px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  position: relative;
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-faq .faq-links__list a::after {
  content: "→";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--stone-light);
  transition: color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-links__list a:hover,
.page-faq .faq-links__list a:focus-visible {
  color: var(--wine);
  padding-left: 12px;
  background: rgba(232, 199, 123, .16);
}

.page-faq .faq-links__list a:hover::after,
.page-faq .faq-links__list a:focus-visible::after {
  color: var(--magenta);
  transform: translateY(-50%) translateX(4px);
}

@media (min-width: 760px) {
  .page-faq .faq-links__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 40px;
  }
}

/* ---------- 无障碍与降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-item__summary,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-links__list a,
  .page-faq .faq-links__list a::after,
  .page-faq .breadcrumb a {
    transition: none !important;
    transform: none !important;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }
}
<<<END>>>