.page-faq {
  --faq-accent: var(--cyan);
  --faq-gap: 22px;
  overflow-x: clip;
}

.page-faq .breadcrumb {
  padding: 18px 0 0;
  font-size: 0.82rem;
  color: var(--text-2);
}

.page-faq .breadcrumb a {
  color: var(--text-2);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  color: var(--cyan);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 28px;
  padding: 26px 0 36px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -26%;
  width: 78%;
  height: 136%;
  background:
    linear-gradient(158deg, rgba(45, 226, 230, 0.16), rgba(107, 111, 138, 0.1) 46%, rgba(255, 107, 53, 0.1) 68%, transparent 78%);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
}

.page-faq .faq-hero__text,
.page-faq .faq-hero__figure {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__text h1 {
  margin: 10px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(1.85rem, 6.2vw, 3rem);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .faq-hero__lead {
  margin: 0 0 20px;
  max-width: 62ch;
  color: var(--text-2);
  font-size: 0.96rem;
  line-height: 1.75;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--text-2);
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-right: 16px;
  border-right: 1px solid var(--line);
}

.page-faq .faq-hero__facts li:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-faq .faq-hero__fact-k {
  color: var(--cyan);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__jump .chip {
  text-decoration: none;
  font-size: 0.82rem;
}

.page-faq .faq-hero__jump .chip:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

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

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 30px;
  padding: 32px 0 56px;
  align-items: start;
}

.page-faq .faq-toc {
  position: relative;
  padding: 16px 0 0;
  border-top: 2px solid var(--cyan);
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--violet);
  text-transform: uppercase;
}

.page-faq .faq-toc__list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  color: var(--text-2);
  font-size: 0.88rem;
  text-decoration: none;
  background: var(--panel);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-toc__link .mono {
  font-size: 0.74rem;
  color: var(--violet);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-left-color: var(--cyan);
  color: var(--text);
  background: var(--panel-hi);
}

.page-faq .faq-toc__quick {
  display: grid;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc__quick-link {
  color: var(--text-2);
  font-size: 0.84rem;
  text-decoration: none;
  border-bottom: 1px dashed var(--line-hi);
  padding-bottom: 4px;
}

.page-faq .faq-toc__quick-link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-faq .faq-body {
  display: grid;
  gap: 40px;
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  --faq-sec-accent: var(--cyan);
  position: relative;
  scroll-margin-top: 84px;
}

.page-faq .faq-sec--subs { --faq-sec-accent: var(--cyan); }
.page-faq .faq-sec--switch { --faq-sec-accent: var(--violet); }
.page-faq .faq-sec--calendar { --faq-sec-accent: var(--orange); }
.page-faq .faq-sec--spec { --faq-sec-accent: var(--yellow); }
.page-faq .faq-sec--support { --faq-sec-accent: var(--green); }
.page-faq .faq-sec--index { --faq-sec-accent: var(--cyan); }

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-sec__num {
  display: inline-block;
  padding-top: 4px;
  font-size: 0.8rem;
  color: var(--faq-sec-accent);
  letter-spacing: 0.06em;
}

.page-faq .faq-sec__head h2 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: clamp(1.18rem, 4vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .faq-sec__head h2::after {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  margin-top: 10px;
  background: var(--faq-sec-accent);
}

.page-faq .faq-sec__intro {
  margin: 0;
  max-width: 66ch;
  color: var(--text-2);
  font-size: 0.9rem;
  line-height: 1.72;
}

.page-faq .faq-sec__foot {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-left: 2px solid var(--line-hi);
  background: var(--ink-850);
  color: var(--violet);
  font-size: 0.8rem;
  line-height: 1.65;
}

.page-faq .faq-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-hi);
}

.page-faq .faq-item[open] {
  border-color: var(--line-hi);
  background: var(--panel-hi);
  box-shadow: inset 3px 0 0 var(--faq-sec-accent);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 18px;
  align-items: start;
  gap: 10px;
  padding: 14px 14px;
  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:focus-visible {
  outline: 2px solid var(--faq-sec-accent);
  outline-offset: -2px;
}

.page-faq .faq-item__id {
  font-size: 0.72rem;
  color: var(--faq-sec-accent);
  padding-top: 3px;
  letter-spacing: 0.04em;
}

.page-faq .faq-item__text {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

.page-faq .faq-item__icon {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--faq-sec-accent);
}

.page-faq .faq-item__icon::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(135deg);
}

.page-faq .faq-item__a {
  padding: 0 16px 16px 46px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  color: var(--text-2);
  font-size: 0.89rem;
  line-height: 1.78;
}

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

.page-faq .faq-item__more a {
  color: var(--faq-sec-accent);
  font-size: 0.84rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-item__more a:hover {
  border-bottom-color: var(--faq-sec-accent);
}

/* ---------- 配置档位 ---------- */
.page-faq .faq-spec {
  display: grid;
  gap: 20px;
  margin-top: 18px;
}

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

.page-faq .spec-bars {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--ink-850);
}

.page-faq .spec-bar {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  align-items: center;
  gap: 6px 12px;
}

.page-faq .spec-bar__name {
  font-family: var(--font-head);
  font-size: 0.82rem;
  color: var(--text);
}

.page-faq .spec-bar__track {
  display: block;
  height: 8px;
  background: var(--line);
}

.page-faq .spec-bar__fill {
  display: block;
  height: 100%;
}

.page-faq .spec-bar__fill--min {
  width: 46%;
  background: var(--violet);
}

.page-faq .spec-bar__fill--rec {
  width: 76%;
  background: var(--cyan);
}

.page-faq .spec-bar__fill--net {
  width: 58%;
  background: var(--orange);
}

.page-faq .spec-bar__note {
  grid-column: 2;
  font-size: 0.76rem;
  color: var(--text-2);
}

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

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--green);
  background: var(--panel);
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-faq .faq-contact__line {
  margin: 0;
  color: var(--text-2);
  font-size: 0.86rem;
  line-height: 1.7;
}

.page-faq .faq-contact__line .mono {
  color: var(--text);
}

.page-faq .faq-contact .btn {
  margin-top: 4px;
  text-decoration: none;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-cats {
  display: grid;
  gap: 1px;
  margin-top: 18px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-cat {
  padding: 16px 14px 18px;
  background: var(--panel);
  transition: background 0.2s var(--ease);
}

.page-faq .faq-cat:hover {
  background: var(--panel-hi);
}

.page-faq .faq-cat__name {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 0.98rem;
  color: var(--text);
}

.page-faq .faq-cat__name .mono {
  font-size: 0.76rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-faq .faq-cat__desc {
  margin: 0 0 12px;
  color: var(--text-2);
  font-size: 0.85rem;
  line-height: 1.7;
}

.page-faq .faq-cat__link {
  color: var(--orange);
  font-size: 0.82rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-cat__link:hover {
  border-bottom-color: var(--orange);
}

.page-faq .faq-cat--muted {
  background: var(--ink-850);
}

.page-faq .faq-cat--muted .faq-cat__name .mono {
  color: var(--violet);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-item__q {
    padding: 16px 18px;
    gap: 14px;
  }

  .page-faq .faq-item__a {
    padding: 14px 18px 18px 56px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
    padding: 44px 0 52px;
    gap: 36px;
  }

  .page-faq .faq-hero__lead {
    font-size: 1rem;
  }

  .page-faq .faq-spec {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 26px;
  }

  .page-faq .spec-bar {
    grid-template-columns: 86px minmax(0, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: 218px minmax(0, 1fr);
    gap: 44px;
    padding: 44px 0 72px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 84px;
  }

  .page-faq .faq-body {
    gap: 48px;
  }

  .page-faq .faq-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__link,
  .page-faq .faq-item,
  .page-faq .faq-item__icon,
  .page-faq .faq-cat {
    transition: none;
  }
}