.page-faq {
  background: var(--night);
  color: var(--label);
  padding-bottom: 72px;
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 52px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 3%;
  bottom: 0;
  width: 52%;
  height: 3px;
  background: var(--field);
  transform: skewX(var(--skew));
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: -60px;
  width: 40%;
  height: 260px;
  background: linear-gradient(180deg, rgba(23, 162, 107, 0.22), rgba(53, 194, 214, 0));
  transform: skewX(var(--skew));
  pointer-events: none;
}

.page-faq .breadcrumb {
  position: relative;
  z-index: 1;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

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

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

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 20px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-size: clamp(32px, 8vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--label);
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.85;
  color: #CBD8D3;
}

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

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--stand);
}

.page-faq .faq-hero__quick {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__quick-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--stand);
}

.page-faq .faq-hero__quick-num {
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__quick-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

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

.page-faq .faq-body__wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

/* ---------- 分组导航 ---------- */
.page-faq .faq-nav {
  border: 1px solid var(--line);
  background: var(--stand);
  padding: 16px 14px;
}

.page-faq .faq-nav__list {
  display: flex;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
}

.page-faq .faq-nav__list li {
  flex: 0 0 auto;
}

.page-faq .faq-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--label);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid var(--line);
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.page-faq .faq-nav__no {
  font-size: 12px;
  color: var(--turf);
  letter-spacing: 0.06em;
  transition: color var(--ease);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-color: var(--turf);
  background: rgba(23, 162, 107, 0.14);
}

.page-faq .faq-nav__foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-nav__foot-text {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-nav__foot .btn {
  display: inline-block;
  font-size: 13px;
  padding: 8px 14px;
}

/* 通过 :target 与 :has 让侧栏同步高亮 */
.page-faq:has(#faq-account:target) .faq-nav__link[href="#faq-account"],
.page-faq:has(#faq-league:target) .faq-nav__link[href="#faq-league"],
.page-faq:has(#faq-score:target) .faq-nav__link[href="#faq-score"],
.page-faq:has(#faq-report:target) .faq-nav__link[href="#faq-report"],
.page-faq:has(#faq-enterprise:target) .faq-nav__link[href="#faq-enterprise"],
.page-faq:has(#faq-help:target) .faq-nav__link[href="#faq-help"] {
  background: var(--field);
  border-color: var(--field);
  color: var(--label);
}

.page-faq:has(#faq-account:target) .faq-nav__link[href="#faq-account"] .faq-nav__no,
.page-faq:has(#faq-league:target) .faq-nav__link[href="#faq-league"] .faq-nav__no,
.page-faq:has(#faq-score:target) .faq-nav__link[href="#faq-score"] .faq-nav__no,
.page-faq:has(#faq-report:target) .faq-nav__link[href="#faq-report"] .faq-nav__no,
.page-faq:has(#faq-enterprise:target) .faq-nav__link[href="#faq-enterprise"] .faq-nav__no,
.page-faq:has(#faq-help:target) .faq-nav__link[href="#faq-help"] .faq-nav__no {
  color: var(--label);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: 8px;
}

.page-faq .faq-group {
  padding: 34px 0 26px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 110px;
}

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

.page-faq .faq-group:target .faq-group__no {
  color: var(--signal);
}

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

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: clamp(36px, 9vw, 64px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--field);
  transition: color 180ms ease;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 4.4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--label);
}

.page-faq .faq-group__note {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-group__figure {
  margin: 20px 0 4px;
  max-width: 620px;
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--stand);
}

.page-faq .faq-group__tail {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: #CBD8D3;
}

.page-faq .faq-group__tail a {
  color: var(--turf);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 165, 0.45);
  transition: color var(--ease), border-color var(--ease);
}

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

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .faq-item {
  background: var(--stand);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  transition: border-color var(--ease), background var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--turf);
}

.page-faq .faq-item[open] {
  border-color: var(--signal);
  border-left-color: var(--field);
  background: #101F35;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--label);
  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::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.3;
  color: var(--turf);
  transition: color var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--signal);
}

.page-faq .faq-item__q:hover {
  color: var(--turf);
}

.page-faq .faq-item__a {
  padding: 0 16px 16px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 34em;
  padding: 12px 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #D6E2DC;
  background: rgba(237, 243, 238, 0.06);
  border-left: 2px solid var(--field);
}

.page-faq .faq-item__a a {
  color: var(--turf);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 165, 0.45);
}

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

/* ---------- 联系卡片 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--stand);
}

.page-faq .faq-contact__key {
  flex: 0 0 84px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-contact__val {
  font-size: 15px;
  color: var(--label);
  word-break: break-all;
}

.page-faq .faq-contact__val--text {
  font-family: var(--font-sans);
  word-break: normal;
}

.page-faq .faq-contact .copy-btn {
  margin-left: auto;
  padding: 5px 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--turf);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: border-color var(--ease), color var(--ease);
}

.page-faq .faq-contact .copy-btn:hover,
.page-faq .faq-contact .copy-btn:focus-visible {
  border-color: var(--turf);
  color: var(--label);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 36px 0 62px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 42px;
    align-items: start;
    margin-top: 26px;
  }

  .page-faq .faq-hero__quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 36px;
  }

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

  .page-faq .faq-body__wrap {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-nav__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-nav__link {
    display: flex;
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    background: rgba(23, 162, 107, 0.16);
    border-left-color: var(--turf);
  }

  .page-faq:has(#faq-account:target) .faq-nav__link[href="#faq-account"],
  .page-faq:has(#faq-league:target) .faq-nav__link[href="#faq-league"],
  .page-faq:has(#faq-score:target) .faq-nav__link[href="#faq-score"],
  .page-faq:has(#faq-report:target) .faq-nav__link[href="#faq-report"],
  .page-faq:has(#faq-enterprise:target) .faq-nav__link[href="#faq-enterprise"],
  .page-faq:has(#faq-help:target) .faq-nav__link[href="#faq-help"] {
    border-left-color: var(--turf);
    background: var(--field);
    color: var(--label);
  }

  .page-faq .faq-group {
    padding: 40px 0 32px;
  }

  .page-faq .faq-group__head {
    gap: 20px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-item__q {
    font-size: 17px;
    padding: 16px 20px;
  }

  .page-faq .faq-item__a {
    padding: 0 20px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
  }
}