/* ===== 必胜28PC · 安装与报修答疑 /troubleshooting/ ===== */
.page-faq {
  --faq-accent: var(--w28-cyan);
  --faq-line: rgba(30, 66, 102, 0.72);
  --faq-radius: 14px;
  display: block;
  min-width: 0;
}

.page-faq .faq-crumb {
  margin-bottom: clamp(0.6rem, 2vw, 1.2rem);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(1.2rem, 3.5vw, 2.2rem);
  padding-bottom: clamp(1.8rem, 5vw, 3rem);
}

.page-faq .faq-hero__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  border-radius: var(--w28-radius-lg);
  padding: clamp(1.4rem, 5vw, 3.4rem);
  display: grid;
  gap: 0.95rem;
  background:
    radial-gradient(130% 150% at 100% 0%, rgba(44, 232, 224, 0.1), transparent 52%),
    linear-gradient(160deg, rgba(16, 42, 68, 0.88), rgba(8, 26, 43, 0.6));
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image:
    repeating-linear-gradient(90deg, rgba(30, 66, 102, 0.32) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(0deg, rgba(30, 66, 102, 0.18) 0 1px, transparent 1px 28px);
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: clamp(80px, 22%, 220px);
  height: 3px;
  background: linear-gradient(90deg, var(--w28-cyan), rgba(255, 107, 53, 0.85));
}

.page-faq .faq-hero__frame > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__stamp {
  justify-self: start;
  font-family: var(--w28-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--w28-cyan);
  border: 1px solid rgba(44, 232, 224, 0.42);
  border-radius: var(--w28-pill);
  padding: 0.3rem 0.75rem;
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 18ch;
  line-height: 1.08;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  color: rgba(245, 241, 232, 0.82);
}

.page-faq .faq-hero__jump {
  list-style: none;
  margin: 0.7rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .faq-hero__jump a {
  display: inline-flex;
  align-items: center;
  font-family: var(--w28-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: rgba(245, 241, 232, 0.9);
  text-decoration: none;
  border: 1px solid var(--faq-line);
  border-radius: var(--w28-pill);
  padding: 0.42rem 0.85rem;
  background: rgba(8, 26, 43, 0.55);
  transition: border-color 0.25s var(--w28-ease), color 0.25s var(--w28-ease), transform 0.25s var(--w28-ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--w28-cyan);
  color: var(--w28-cyan);
  transform: translateY(-2px);
}

.page-faq .faq-hero__note {
  margin: 0.2rem 0 0;
  color: var(--w28-gray);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 5vw, 3rem);
}

.page-faq .faq-index {
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  padding: 1.1rem 1.1rem 1.2rem;
  background: linear-gradient(180deg, rgba(16, 42, 68, 0.62), rgba(8, 26, 43, 0.28));
}

.page-faq .faq-index__title {
  margin: 0 0 0.75rem;
  font-family: var(--w28-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--w28-ice);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.page-faq .faq-index__list li {
  min-width: 0;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.55rem 0.15rem;
  border-bottom: 1px dashed rgba(30, 66, 102, 0.62);
  color: rgba(245, 241, 232, 0.88);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.45;
  transition: color 0.25s var(--w28-ease), padding-left 0.25s var(--w28-ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--w28-cyan);
  padding-left: 0.45rem;
}

.page-faq .faq-index__no {
  flex: none;
  font-family: var(--w28-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--w28-cyan);
}

.page-faq .faq-index__foot {
  margin: 0.9rem 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--w28-gray);
}

.page-faq .faq-index__foot a {
  color: var(--w28-ice);
}

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

.page-faq .faq-group {
  scroll-margin-top: 120px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.4rem, 7vw, 4.4rem);
}

.page-faq .faq-group--cyan { --faq-accent: var(--w28-cyan); }
.page-faq .faq-group--orange { --faq-accent: var(--w28-orange); }
.page-faq .faq-group--gold { --faq-accent: var(--w28-gold); }
.page-faq .faq-group--ice { --faq-accent: var(--w28-ice); }

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 1.3rem;
}

.page-faq .faq-group__no {
  flex: none;
  font-family: var(--w28-font-mono);
  font-size: clamp(1.5rem, 5vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: rgba(245, 241, 232, 0.12);
  -webkit-text-stroke: 1px var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-group__lead {
  margin-bottom: 1.3rem;
}

.page-faq .faq-group__lead p {
  margin: 0;
  max-width: 66ch;
  color: rgba(245, 241, 232, 0.84);
  line-height: 1.85;
}

.page-faq .faq-group__lead--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.3rem;
  align-items: start;
}

/* ---------- 图像 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 0 0 1.3rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--w28-panel);
}

.page-faq .faq-group__lead--split .faq-figure {
  margin: 0;
}

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

.page-faq .faq-figure::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.page-faq .faq-figure--cyan::before {
  background: linear-gradient(205deg, rgba(44, 232, 224, 0.2), transparent 58%, rgba(139, 184, 217, 0.14));
}

.page-faq .faq-figure--orange::before {
  background: linear-gradient(205deg, rgba(255, 107, 53, 0.22), transparent 58%, rgba(242, 166, 90, 0.16));
}

.page-faq .faq-figure figcaption {
  position: relative;
  z-index: 2;
  padding: 0.5rem 0.8rem;
  border-top: 1px solid var(--faq-line);
  background: rgba(8, 26, 43, 0.72);
  font-family: var(--w28-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  color: var(--w28-ice);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  --faq-accent-local: var(--faq-accent);
  margin-bottom: 0.65rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--w28-radius);
  background: linear-gradient(180deg, rgba(16, 42, 68, 0.55), rgba(8, 26, 43, 0.24));
  transition: border-color 0.28s var(--w28-ease), background 0.28s var(--w28-ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(44, 232, 224, 0.42);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-accent-local);
  background: linear-gradient(180deg, rgba(16, 42, 68, 0.8), rgba(8, 26, 43, 0.34));
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1rem 1.05rem;
  cursor: pointer;
  list-style: none;
  color: var(--w28-paper);
  font-size: clamp(0.96rem, 2.6vw, 1.05rem);
  line-height: 1.55;
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--w28-cyan);
  outline-offset: -2px;
  border-radius: var(--w28-radius);
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 0.15rem;
  font-family: var(--w28-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--faq-accent-local);
}

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

.page-faq .faq-item__sign {
  flex: none;
  position: relative;
  width: 1rem;
  height: 1rem;
  margin-top: 0.32rem;
  margin-left: auto;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--faq-accent-local);
  transition: transform 0.3s var(--w28-ease), opacity 0.3s var(--w28-ease);
}

.page-faq .faq-item__sign::before {
  width: 100%;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__sign::after {
  width: 2px;
  height: 100%;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 1.05rem 1.1rem 2.6rem;
  color: rgba(245, 241, 232, 0.8);
  line-height: 1.8;
  font-size: 0.94rem;
}

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

.page-faq .faq-item__a p + p {
  margin-top: 0.7rem;
}

.page-faq .faq-item__a a {
  color: var(--w28-cyan);
  text-decoration: underline;
  text-decoration-color: rgba(44, 232, 224, 0.4);
  text-underline-offset: 3px;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-drop 0.3s var(--w28-ease) both;
}

@keyframes faq-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 收束区 ---------- */
.page-faq .faq-next__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--w28-radius-lg);
  padding: clamp(1.4rem, 5vw, 3rem);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(44, 232, 224, 0.12), transparent 55%),
    radial-gradient(120% 140% at 100% 100%, rgba(255, 107, 53, 0.12), transparent 60%),
    linear-gradient(180deg, rgba(16, 42, 68, 0.78), rgba(8, 26, 43, 0.5));
}

.page-faq .faq-next__text h2 {
  margin: 0.35rem 0 0.85rem;
}

.page-faq .faq-next__text p {
  margin: 0;
  max-width: 58ch;
  color: rgba(245, 241, 232, 0.82);
  line-height: 1.85;
}

.page-faq .faq-next__aside {
  margin-top: 0.85rem;
  font-size: 0.86rem;
  color: var(--w28-gray);
}

.page-faq .faq-next__aside a {
  color: var(--w28-ice);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-content: end;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-group__lead--split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 1.6rem;
    align-items: center;
  }

  .page-faq .faq-item__a {
    padding-left: 3.1rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__stamp {
    position: absolute;
    top: clamp(1.4rem, 4vw, 2.6rem);
    right: clamp(1.4rem, 4vw, 2.6rem);
    transform: rotate(-2deg);
  }

  .page-faq .faq-hero__title {
    max-width: 24ch;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(210px, 264px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 112px;
  }

  .page-faq .faq-next__panel {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    gap: 2.6rem;
    align-items: end;
  }
}

@media (min-width: 1160px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(230px, 288px) minmax(0, 1fr);
    gap: 3.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-hero__jump a:hover,
  .page-faq .faq-hero__jump a:focus-visible {
    transform: none;
  }

  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}